Free Exhibits - District Court of Colorado - Colorado

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 1 of 25

Col

lines

19-23 the
deep
weight
indicator
is

often

grossly

misleading

in

very

well and

so

if

the

borehole

is

or

slanted

to

cause

substantial

of

weight

the

drill

to be borne

by

frictional

engagement

of the

string

with

the wall

borehole

It

is

know

that

such circumstances

the

driller

may

not even

be able to

tell

whether

is

on

the

of the

borehole

let alone

what

the

weight

on

the

bit is

indeed

it

is

on the

bottom

meet

this situation

various

art

arrangements have
sections

been devices

which

of

of

drill

string

are

connected by

telescoping joint

to permit

the two

sections to extend

contract

When
of the

two sections

are

only

partially

extended

the

weight

drill

the telescoping

joint

weight

imposed on the be imposed on

bit

and

desired

magnitude

weight

may

the

bit

period by simply

providing

weight

in

the

drill

string

below

telescoping

Suitable

signal

means must be provided
sections

however

to indicate

when

two

telescoping

are

partially

collapsed

NOV

.2881

-7-

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 2 of 25

Cd

55

to

Col

line

The

present

invention meets this

by

signal

system with

the capability

indicating

approach

to

both

two

opposite

of the range of extension

contraction

of

the

two telescoping

sections

Col
Thus
bit

29-3

the Varny

Patent

discloses

device

for

weight-on-

which

operator

when
actual

weight

the

drill

below

the

telescoping

joint

more

less

than

the

of

string

below

the

telescoping

Requestor simply was
discussed

the fact

that

the

type bit

automatic

driller

specifically

in the

RELA

TED ART
automatic

of

142

Patent

See

142
drill

Ex
string

Col

11

14-15 Typical

presently

control

using

bit

weight

The purpose

of the

142

Patent

was which

to

overcome

the

problems associated

such

weight-on-bit

drillers

was stated as follows

Accordingly
only operates

need

exists

for an automatic

driller

not

through

measurements

but

operates

in

response

to

other

measurements

so

that

NOV
-8-

2882

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 3 of 25

directional

or

horizontal

boreholes

may

be drilled

id

at

Col

11

The

in the

Varney

Patent

permits

two sections

to

extend

and contract

As

stated

above

the

weight-on.bit

is

constant

that

is the

weight

of the

drill

below

the

joint

constant

so long as the join

is

not fully

extended

or contracted

The

Patent

the

use of the

downward

stream

of

drilling

fluid

for

transmitting

signal

indicating

the

relative

position

extended

or

compressed

of

telescoping

joint

through

the

use

of

generator

system

in

response

to the telescoping

action

which can

either

be fully compressed

or extended

involving

the telescoping

thereby creates

an increase

pressure for detection

at

th

wellhead

The

Patent

this concept

as

follows

using

the

two

limit

signals created

by

telescoping

joint to lower

the

automatically

in

manner

to maintain

magnitude

wei2ht on bit

The brake

is

automatically

to

lower the

drill

string

response

to

signal

indicating

that

selected

telescoping

joint

fully

and subsequently

brake

is

in response to the second

signal indicating

that

the joint

collapses

NOV

2883

The

element of Claim

the

142

requires

string

-9-

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 4 of 25

coptroller

to increase

or decrease the

RA

of release

of the

drill

string

element

of Claim 11

is provided

as follows with

emphasis

added

controlling

said drill string

to increase

the

rate of release

of said

string

when

signal

represents

decrease in

pressure and to

decrease

the rate of release of said drill

said

represents

an increase

drilling

pressure

On
functions

the

other

the

Varney

Patent

teaches

power

transformer

132

as

pushbutton circuit The

switch

which on successive

opens

and

Patent

describes

process

as follows

When
sends

pressure

rise

occurs

the

in flCi

corresponding

signal

to

the

discriminator

128 and

signal

sends

to

power

transformer

132

responds by actuating

134

power

transformer

functions

in the

manner

of

known

type of pushbutton

switch

which on successive

alternately

opens

and closes

Thus one command

signal

from the

signal

discriminator

causes

the

power transformer

to

relax

the hoist

134 for lowering

drill

the next

NOV
10-

2884

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 5 of 25

signal

the

hoist

to

terminate

the

movement

of the

string

Co1 10 lines
drill

Thus
is

the transformer

controlling

the

of the

string

in the

Varney Patent

or

off

Thus

taught by the

Varney Patent

is

controlled

controller

to either be

on
completely releasing

stoppitig

the rate

of release of

string

or

off

thereby

the

weight of the

drill

The

nature of this type of brake

control system

prevents

any increases or decreases

in rate

or release

of

drill

string

The

ordinary

of

these

claim

terms

clearly

that

the

transformer

132 taught

the

Varney Patent

would prohibit

and/or

decreases

in

rate

of release

The ordinary meaning of these claim terms become

is

provided

as

follows

increase

to

greater

in

size amount degree

etc
less

grow

decrease

vi.

to

become

or cause

to

become

etc

diminish

is

the

amount degree

etc of anything

relation

to

units of something else

rate of pay

month

rate of speed per

hour

Since

the transformer

132 taught

by

the

is

either

mode
can

or

no

release

mode

no changes

in rate

i.e change

per unit time of release

Consideration

of U.S

No
Exhibit

4.491.186

to Alder

The Alder 186

patent

for the

same reasons

set forth above

with respect

11

NOV2885

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 6 of 25

the Varney

patent

has no disclosure

teaching

or

suggestion

to the claims

of the

142

patent

It is

very clear

the Alder

86 patent

is

to the use of

mud

the

drilling

being

circulated

to

telemeter

infonnation

location

4ownhole

to

the earths

surface

This

is

exemplified by

language

Column

lines

lines

53-62

Column

lines

63-68 Column

lines

3-9 Column

lines

49-52

lines

61-64 and

finally

Claim 13

is

printed

up in

lines

There simply

no

teaching

in the Alder

186

patent to use

drilling fluid

pump

to control

rate

which

drill string

is

Instead the

186
telemetry

patent discloses

that

RPM

of the motor

is

used to generate

string

mud

data which can be

transmitted

from downhole

to earths

to

generate

signals

which

control

the

RPM

of the

motor

In short

mud

telemetry

in which

distance

between

mud

pulses

is

indicative

of

some data

whether

an

acoustic

measurement

nuclear measurement

resistivity

measurement

or the like is measured

the data

is

transmitted

up

the

There

no reason why the

could

alone

to create

rejection

under 35

102 or could

be combined with the

reference

under 35 U.S.C

103

neither

of

these patents has

teaching

which even remotely

suggests the use of

pump

to

control the rate

which

string

is

released

The

Owner has

enclosed herewith charts Exhibit

the language

of Claims

and

of the

patent

and which

the attempt

by the

Protestor to explain

how
which

language

in

and 11

is

anticipated

or at least

obvious

by

art

and

also

shows the

failure

the

Vamey

patent

to disclose

Claims

11

ofthe

142

patent

NOV
-12-

2886

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 7 of 25

The

charts

dci

not

show the

or lack thereof

the Alder

patent

because the

Alder

186

patent

is

not even remotely

the present

invention

as exemplified

by of

Claims

and

By way

of

further

example Claim

the

AIder

186

patent

speaks

generating

pulses in the

drilling fluid

response

to the

the

motor

teleinetering

the

to the

surface

and

adjusting

brake

for the

drilling

to maintain

RPM

the

motor

constant

in the

same

the Varney patent

seeks

to maintain

weight-on-bit NeithertheAlder

186

patent

nor the

183

patent has any relevance

to the present

invention

Accordingly

it is

respectfully

there

no

basis

the

reexamination of

Claims

and

of the

patent

Counsel for

Patent

the opinion

no

fee

payable to the linite4 States

Patent

Trademark

Office

for

this

Patent

Owners
such

Statement

However

if

such

fee is

payable

the Commissioner

is

to charge

Account

No

2166

NOV

2887

13

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 8 of 25

REQUEST
In

INTERVIEW
the Colorado litigation

view of the upcoming Hearing

in

cunently set for July

72004

involving

U.S
that

Patent

No 5474142

the undersigned

counsel

for the Patent

respectfully

requests

an

interview

be conducted

by the undersigned

with Examiners

William

Neuder

and David

Bagnell

at

the

Undersigned

the Patent

Owner would

appreciate

telephone

call at

713-355-4200 to discuss an appropriate

date and

for such interview

CERTIFICATE

SERVICE

hereby

certify

that

copy of the foregoing

was mailed

via Federal Express this

_____

day of June

2004

Via Federal Express

Teny

Leier

Blake Cassels
45

Graydon LLP
20th

OConnor

Street

Floor

Ottawa
Canada
Attorney

Ontario

for

William

Johnson Jr

NOV
-14-

2888

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 9 of 25

ADDITIONAL CERTIFICATE

OF SERVICE

hereby

certify

that

copy of the foregoing

was hand delivered

on

this

______ day

June 2004

to Barbara

Denver

Colorado

Robert

Bowick

Jr

Respectfully

ed

William

Johnson/fr _______
FifiM

Reg.No.22719

THE

1900 West Loop South

Houston Texas Tel

77027-32 14

713
713355-9689

Fax

NOV

2889

15

Case 1:03-cv-02579-RPM
IillII
11111111111111

Document 140-2
III

Filed 01/11/2007
EXPRESS

Page 10 of 25
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Applicant
Serial Filing

Bowden 90/006919
26 Januaiy Automatic 2004
Drilling

Docket

Wildcat-000RE Atty
Card

No
Date

WiT

No763
2004

Titit

System

Due Date

June

Ends

Postal

Cant

Certificate

of Patent including

Mailing

No

EV

173738024

US
two

Transmittal

Letter

General

Pending

Patent

Owners
and and

Statement

Under 37

1530b
of Service
of Attorney

for Interview

CertifiCates

Revocation Statement

of 31

Attorney

Appointment Exhibits

of
through

CPR 3.73b

NOV

2890

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 11 of 25

Dec 14

1965
WELL

VARNEY
APDARA0S

3223183

Filed

Aug

SheetsSheet

Nov

2891

EBif

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 12 of 25

Dec 14
WELL Filed

VARNEY
APPARAtUS

3223183

Lug

196$

Sheets-Sheet

-a

PPCW

4twdart

Jkr/44 anre

NOV

2892

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 13 of 25

Dec

1965
WELL

.1

3223183
APPARATUS SheetsSheet

DRXLLING

Filed

Aug

45
Jar

-.t/a

NOV

2893

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 14 of 25

I-

44

t0

Is
Et3

ts3

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007

Page 15 of 25
3223183 Dec 14 I98S

United

States Patent
Patented

the

telescoping

joint

Suitable

3223183
Juslin

means must be pro
two
telescoping

WELL DRILLiNG APPARATUS Varney 7326 Ogelsby Are
Los Angeles 45 Calif 1963 8cr No 21 ClaIms CI 17527

vided

however

to indicate

sec

tions are partially

The
for rapidly heretofore to the the the

stream
pressure

of

drilling

may be
travel

FlIed

Aug

changes

Suggestions prior art for of
drill rise

have such in

advanced

generating

This
boreboles rotary

invention in tilling

to

apparatus

for

deep
relates
at

restricting

stream

response

to

and
apparatus
is

more which

particularly bit

to

the ing

telescoping pressure for

string at the

and

thereby the

treat well

in

the crushing

detection

top of
for

end
action
lifting

of with
the circulating

for
fluid

or
cooling

Such reasons

have

not been

fruitful

and
purpose as
drill bit

cuttings

out of

the

For
is

One reason
sure
rise

in

some

instances

Is

the

stgnalmg

pres
reason

of

the

present in

disclosure such
drill

too

gradual at

accurate

detection rate the

especially

embodied
rotated applied to

an

apparatus

In the invention the
drill

the

when
found
rise

the in

progresses art

slow
is

Another

string but
in the

may

also rotated

pressure

an

apparatus motor

which

consequently system
reason with the
is

by In posed

suitable

on
bit

end
practice

the the

efficiency

for

the

drilling signals relative

fluid

rotary on
the
is

drilling

weight
of

im
so
of

further soclated

when
limit the telescoping to guess

the

are

judged

by means
regulated with to the

weight the top

one two

range of
sections

as move

indicator the the well

on

the

draw works and means
associated off

at

ment
difficult

between
for

and
reaches

it

becomes
the the

drum
hoist the

driller

when

he

driller

slacking
drill

pay out
increase

cable during 25

limit scoping vertently the the

When
sections

driller are the are not nearly
drill

signal

that

lower
weight drilling

and Holding such
the

thereby

imposed

extended
the

be

may Inad
at

on

the

back
as

the result too

lower
sections

string contracted

which on

weight

progressive

two
bit

fully
all

and
of

thus

impose

deepening
the not the only
drill

hole

Carrying
of

much
character

on

drill

formation
cause excessive also turn
drill

may
80

string

wear
to

and
result

possible

tends to

damage to crooked borehole bending of
the the stresses pipe

The
signal to

present system

invention with

meets

this

situation of

by

providing

approach
the

which
in or tool the

tends

cause

increased failure

both and

of

the

two

opposite

limits

of

range two other

of

eden
In

string

Metal
result

fatigue Friction

drill drill

tion the

of
practice are

the the

two

telescoping the

sections signals

may
wall causing

between be
to

of

aS
by

and
point

borehole drilling

may
string

Increased

to

the

similar

distinguished

each
raising

of

wear

severely

and
little

85

relating

them

to the

lowering and
the to

of

the

string

even
weight

twist

On
the
drill

hand
low depend of be
as the the rates

too of over

In

the

preferred are

practice

however

dif

on

bit bits

ferent stressing

used
feature

identify the are provided

two

limIts
is

Modern
and
weight function

roller

type

largely

on

An
of pressure terized
rises

that

signals

consequent

crushing

Adequate
if It is

character are

and
signals

must
weight

carried

to

avoided and are
In

by
pressure

charac In

intended
the for ton

by

abrupt the

rises

some
short

The optimum may be
is

on

any and

given

conditions tons but In

Instances pressure

form
great
is

of

pulses

of

relatively

amplitude by

created section

usually

range however
100 tons

of
the

five

to

twenty-five of the

tons
drill drill

an 45

axial passes

which through mounted by
the

carried

one
choke

and
other

deep

total weight consequently for the the

which
section

choke
teaches that

carried the

by

the

may exceed
must
the

and

The

head

may
the fluid

be
to

under keep from

tension

distance

down
is

be choke

to be

moved abruptly through
pressure sharp

overloading

dynamic choke

of the
pressure enters ring

Under moderately
calculated the able
is

favorable

conditions

where imposed
to the

the

only

and 50
other ring

thus

produce
the passing signal in

pulse
the

weight by simply
referring

on

the

bit

may be
at

instances

head

merely
the of

choke

weight

indicator

without

choke an

and and

top

of
prevail misleading In
is

however and

such

favor

produces
stantial

abrupt choke

conditions grossly so
if

weight
well

indicator

pressure

rise fnrther that series the

often

very deep
or

and
to

es
55 be
to of

The
adapted
multiple to pulse

head
rings

may

pecially

the portion frictional

slanted
drill

cause

pass

through
is is

of choke

where

substantial

weight

of of

the

string

desired
provision

In this for the

regard choke
at

be
the of

engagement
is

the

drill

string

with such

the

head

to

borehole
the

known
of
the
Is

that

under
able
let It

move
so
the

through of time

the rate

series to

of

choke
in

rings

selected signal at

circumstances

may
on
the

not even

be

to

tell

predetermined form determined
In the

result

an

unmistakable
pulses

whether what
the

the

bottom on
the

borehole
If

alone
is

predetermined
intervals practice

number of
of
the
Is

pre

indeed

on

bottom To meet
have of been
drill

preferred

invention provided
driller In to

this

situation in

plurality the
drill

various

prior pair

art

arrangements
sections joint to
135

of

signaling to

telescoping possible bit the

joints for

which

of

adjacent

string

make
the

the

string

are

connected to

by

vary by

the the the

telescoping

weight
signal
first

on

under
driller

control
the
drill

permit
the the

the

two

sections are only

extend

Guided
stem the be

and

contract
the

When
of
that

pulses
telescoping

two

sections string

until

extended
telescoping joint desired for in long the
drill

weight only

action bit

occurs

to

below on
the

place

and

minimum
Increased until

weight
as

on

the

The
to

weight weight

bit the

and

may then
lower
is

magnitude
drilling string

of

desired similar

may

by continuing
telescoping

the at

he

imposed

on

string

period below

by simply

providing

higher

telescoping

joint

NOV

2895

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007
$I22$188

Page 16 of 25

further tion is the

feature concept

of the of

preferred the

practice limit

of

the

inven
created

adjacent bumper
the usual

telescopinj

sections

of

the
to

drill

string
drill

The
the

using to

two
the

signals string

body manner 22 24
is

connected and1
In the

the

string

by
cally

telescoping in

joint to

lower

automati

construction

shown
of

manner

maintain
Is

selected automatically to
is

mandrel
section

to

signal-generating part
is

weight
to

on

the

The
in response telescoping
Is

which

may be regarded
section

as

man
to the collar

lower

the selected the indicating control telescoping

signal

lndicatig

dreL
usual
drill

signal-generating bit

24

connected one
the the
drill

that

joint tightened

25

by
the

means
telescoping

of

at

least

subsequently second
signal

In
is

response nearly

to

the

26
drill

which
string

provides

of
joint

that

joint to the

collapsed 10

of
Is

sub
an

The
of

automatic

responds
joint

telescoping

The upper-end
outer circumferential inner crating

mandrel abouider 28

provided engages

whichever

driller

The
the

features

and
the

advantages

of

the

inventIon description

may be
and

circumferential to limit

shoulder 30

bumper
extension this fully to limit

understood accompanying In
Illustrative

detailed

sub of

21

downward
to the sections

drawings which
are to as

the.mandrel
the

At
are
Is

pod
tele

drawings

merely view which heed

non The
limit

two end

telescoping

extended
slide

upper

mandrel

22

FIG
rnuating
the

Is

somewhat
first

schematic of
the

broken

scopically position

the

sub body
at

21

to

second

upper
the the

embodiment
created

not
an inner

which

the

two

signals

are

of

choke

iiandrel

circumferential

upper end of shoulder 32 of
position the

through

two Ia

spaced an

choke

rings
sectional

bumper view of
yieldingly

sub

body
are
drill

second
fully contracted

two

flo PlO FIG
produced

enlarged

telescoping

and

the

whole
bit

retractable lb

choke
is

ring
enlarged sectional

an

view

yieldingly

weight In provided

of

the

string

known
into the

retractable

choke
is

head
to

may be on the manner the bumper sub body Is termed wash pipe 34
throughout
of the the to

25

21

view
of the

FIG
in

25
the signals are

scopes tension able

mandrel

range two

ex
sUit tele

embodiment

which

and

contraction

mandrel
fluid

provide
the

bypass
is

means
showing
at

channel
sections the

between

flQ
the limit

fragmentary shown range
of in

apparatus

no

sectional

how
one 30

scoping tion

The

range

of
to

and
the

contrac

produces and view
is

of

relative

bumper sub
at
least-

no
FIG

of

the
is

extension

preferably

extensive
structure in

for example

fragmentary
at the

sectional limit

showing

how
the

feet

the

second

signal

other

The
tion section

FIG
may

added

by

present inven
signal-generating

apparatus

shown another
signal pulses to

flO.2
sectional

comprises 24 38 what

mentioned be termed

longitudinal

view
the

similar

to

P10.1
which 85

bead end
spider

or rod

illustrating

enlargement

mounted on
connected apertured
-an

downwardly
to the of

provides
pressure

In

the

form
given

series state In

of

successive

40
and

the

rod

being

the

indicate

wash pIpe
the

by choke

or 36 24

42
formed
in

and
view for

contraction
is

of somewhat
in

joint broken
for sectIonal

ringa

3$
section

respectIvely

FIG
of the travel

means

FIG
rate

mounting

the

choke of
signaling

at

controlled

through broken

series

move with the lower sec tion or mandrel 22 but the choke head 38 moves with the or bumper sub body 2L upper section
-signal-generating

choke

no
drill

rings
is

When

drill

string

equipped

sectional

view provided
the

sub assembly borehole tended
as the

shown
signaling

no

with
is

the
initially is

bumper
Into fully

ing

bow
on

series of string the
is

telescoping the in

joints

may

be

bumper sub assembly

driller

may

weight

indicated

In

FIG
the

ex

wIth

the

circumferential

imposed

closely

controlled

manner
system Imposed on

shoulder 2$
ferential
all

of

the

mandrel

FIG
for
bitt

diagrammatic
controlling

view the

shoulder 30
the

of

automatically

of

components choke

scoping

Joint

no.9
pressure

on the inner -circunt resting bumper sub body to support of string below the ale time the choke bead 38.ls above
as

Is

diagram

the

character

of
of another

the

uppermost

ring 35

no
FIG

pulse
10
is

When
bole

indicated
the
drill

the the

string

touches of 24

bottomof
string

the

bosethe

sectional

view

lowering
sectIon

continues and

signaling

bumper sub assembly ills diagram indicating
sectional

signal-generating the

character

of

prolonged pressure signal 12 Is simplified

no
the

view

of

an
stages parts

bumper sub body 21 continues to descend to move the head 38 downward through the signaI-genn section 24 The choke head 38 the
choke of upper choke stream of
pressure of pressure

stationary

passes

through

ment
In

for

indicating

pressure

signals

successive

35
fluid

to

restrict the

the

downwardly
that
falls

flowing the

relative-

movement
simplified to indicate

between

telescoping

with
fluid

consequence and as

back

adrlllslring

tilling pulse well
the

rises

no
feeler of

thus meto the at

13

is

sectional the

view
distance

of

signaling object-

sting

which pressure

travels

wave
be

arrangement end 14

from an
feeler

top of
the

The
the

wave

suspended
similar

tube
showing wire
the partially

plo
retracted

Is

view

top of mnnication

may
drill

detected in

means of
interior

with

pressure gauge string
the

corn
the

of to

and IS
Is

two
head
ring

As

telescoping

sections

no
13

continue
passes

plan view

of

spider

not
The
ing

employed

in

38

approaches
to

and

choke
choIce In of
-the

and

14
employs what

36

through

the second or pulse the
top

produce
that

second

pressure dethctCd

rise

invention

bumper

sub assembly
of by renewable Baasb-Ross
In the

may be termed may be of
type

drilling

fluid

wet

may
the

be

at

construction ufactured

splice

bumper sub

man

The
fact the that the

notes

first

signal

and

Division of

of Joy
the

Manufacturing

drill string

has bottomed
registered signaJ

may
by

confirns

the

Company
to

embodiment
Joint In

reduction

of

simply

noting

the

weighi

no

dicator
drill

When
passes applies

by the weight
occurs choke with the as 36

in
the

string

is

provided

the second through
the

by
bumper nected

signaling

bumper sub assembly
21 and mandrel 22
the

head
driller to

38

the choke

which

includes

the

lower

ring hoist

body
to

telescopically constituting

con
two
75

brake

the

body

body and mandrel

terminate

the

lomu

associad
of

drum

carries

on

the

drilling

operation

NOV

2896

Case 1:03-cv-02579-RPM

Document 140-2
3228188

Filed 01/11/2007

Page 17 of 25

Before
the

he

carries

on

the

operation

may
string

take

pressure

of

the to accelerate

stream

of

drilling the

fluid

causes

the

precaution signal

of

bncking

up
that

the the

drill

until

choke has be snap 45
fall

head
action

through resistance

choice concealed

with
spring
rise

pressure

choke

head
ring with

38 36
to

against consequent

moved
sure ing

upward

through
drilling

the

lower
started with

substantially create that signal travels to

instantaneous the the

that

operation

the

signal-

of

pressure pressure yleding

to

form of
of

steep

imposing bit
until

the

sub partly weight of event

no

possibility

pulse

top

wet
from
retracts

the drilling

drill

on

the

drill

choke lower

moves choke
it rise

upwau1

In
the

any

he

operation

below bumper
signal generated 10

ring fixed

permitted up
indicated

by

the

under
prolongs
rise is

pressure pressure terminated to

enters

the

choke
the

ring

and
45

sub by

is

used

by

pressure the

but
the

pressure sprIng

the the

through
peats the

upper

upward movement of choke 35
of
passes lowering the the

choke
driller

head
then
until

38
rethe

snap

the

bead

upwards

back

to

its

normal

drill

choke
It

head

through
appreciated

lower choke

rIng

If the is

yielding

head

3k

in

movement 35a from of
ring

may be

readily

that velocity

character

of

approaches
rise

choke by
causes restriction

ring

below
stream

the of
the since

pressure

signal

depends

on

the

relative the choice passes

In

pressure

downward
retraction

movement
and
also

between depends head

choke
or not the the

and
the

drilling yielding the

downiard
the longer

both but

on whether
enters
is

choke
ring past

choke range choke
to of

completely through
the the pressure

Thus
ring slowly

If

choke

has

yielding

retraction rem

choke

20

it

snaps

the

retracted snaps the steep

and
its

rise

somewhat
Is

gradual
rapid

steep

tracted

choke

upward

abrupt the
is

pressure

rise

entrance
pressure

if
rise

lion an 25

As

result

created

signal pressure of ibis

of

the

character

of

choke
If

In

choke moves
ring

unmistakable

sharp

pulse arrangement
is is

choke
the

rapidly

into sloped

An
when
yielding ring lion yielding

advantage choke choke
relative

that

completely

through
pulse

choke

creates of

steep the

below lower

upper choke

sharp of
is

pressure pressure distinctive
It is

of

amplitude In

character

ring

3k

and choke
distinctive

the

pulse

shown

FIG
as
in

such
to preclude various signals extent practices

travel

bead
steep sharp of pressure the

so

and
to

easily

eventually

produces
with the

or

be understood
the various types

pulse
SO

Thus bumper

two

telescoped

sections to

of produced
relative

of

may
of
the

he
the

sub assembly approach
limits the of

an

Intennedlate

movement

on the depending between the

and head

extent sharp

is suhstantially
signals to will indicate their

way contracted
two
full

and

choke

telescoped

tins

sections

contraction

and
driller

FIG
yieldingly
ls

bow
retractable

choke

3k
purpose
abuts

may be
the

Made
ring stop 35

full

xtension lower
at

Guided
drill

two

limit signals interrnlttendy rate

the

For
and 39

this

choke

can

the

string

either

or keep
the

mounted

normally

snap-type

tinuously

an

appropriately

retarded the

ring stop

37
ring

coil

on
ring the

lower and ring
is

snap-type protected

weight
the the

on

the of

drill

41

urges

the

choke of

weight

constant of

constant string

weight
that
is

being below

drill

by on end

cylindrical

skirt

choke head

telescoping structure In

joint of

FIG
the of

lb

shows 40
in

how
is

choke

3k
In

may he mounted
lb
the
cir-

40

The
tion

second

embodiment
is

of

the

lzrteu to
sire

yielding

manner
against

FIG
to the

shown
of

FIGS
embodiment numerals

largely as Indicated

rod

reduced 44 which

form

structure of

by

the

use

cumferential

shoulder

head
concealed

corresponding

to indicate differs

corresponding
in

parts sub. signal tubular

33a
coil

Is

yieldingly

by of
for

me
cut the

second of

embodiment

from
section

spring to

45
is

The

interior

choke
the coil

bead

3k
and

45

stitution generating extensIon

signal-generating

SO

for

away
coil

form an annular mounted upper end lower end

space this

and 52
the

substitution

of of

In

space

under
the

between 48 on
the

surface the

46

of

compression recess and nut

rod
in

wash pipe 34 38 on therod 40 The signaling bumper sub 50 has
port

normally open upper lower
port sleeve against

Preferably stituting for yieldlngly fixedly ing

structure yildingly

FIG
choke 35 and 38a

Is

by 35a

bypass

54

and

normally

mounted choke choke
ring

ring

FIG
the for the

55the
valve shoulder

upper mounted

fixed

by
of

56 53 by as shown

is

being normally cosed In abutment normally
suitable coil

head

FIG
range

60
is

choke
of the

bead choke

the

of
greater

When
tended
is

signaling

bumper sub assembly

fully

ex
fluid

retraction the the

3k
contraction

substantially

FIG
the

2a

fraction

of

the

drilling the
initial drIll

than

range of
pressure signals

of

choke

head

bypassed

through 52
initially

3k
ing

upper

will

be

produced

follow-

extension Inaction

moves
telescoping functions

port 54 downward sections
-as

When
in the

con
string closes

manne
choke
the

As
proaches on
the

head

3k
of the the

two
extension bypass

of

the valve

moves

downward
rise

and choke
of

ap-

the

tubular

sleeve in

and

upper

choke

ring

35a

pressure ring

00

the

upper
the the

port

54
port

as

shown 54

The

closIng rise

upstream

sides

choke head
the

and stream

of
in

upper
pressure

bypass of
at

causes fluid

created fluid causes

restricting both the

downward
choke
to

corresponding
rise

drilling ring to

the the

drilling

choke
after

may he
to

retract
its its

downward
the

and

retracts

to
to

As the
tract the

signaling tubular

bumper
extension

assembly 52
contInues

continues to

choke
character rate of

continues

downward
pressure

limit

The
on
the

move donfinger

of

the

resulting

signal

ward
sleeve tion

until

eventually

downwardly encounters

extending
the

62
the

depends two bly
ft

relative the the
drill

telescoped

sections rate at

movement between the bumper sub assemstring
is is

of the 56
to the valve

upper
valve

end
in

and

sleeve

which
the

opposi of

lowered

after

60
$6 opens
the the

bottom
rise

Usually in

signal
is

somewhat even two

anomalous

70

the pressure detected
It is

lower
fluid that

In relative sections

pressure
Is

prolonged
the

when

port

to cause

the

drop
at the top

drilling

movement
the the the

telescoped

of

wet
that

may he
of
the bypass fluid

signaling

bumper sub assembly
carried yielding

to

he

understood 55
are

When
reaches

choke

head
the

38c
in

normally both with of

ports

54
to

lower

fixed

choke

ring

36 however

closed
It

rise

75

th

drilling the

delivered

the

contemplatw

that

bypass

NOV

2897

Case 1:03-cv-02579-RPM

Document 140-2

Filed 01/11/2007
3228188

Page 18 of 25

ports

will

open

only oL The of of

to

produce

signals

by

When
thereby

choke
raises the

head
pressure the

80

eaten of

the

choke

rIng

68

ping the In the vention continued uncovering extension pressure ing string is covered to

pressure operation

down
the

flowing

thedrill pressure

stream of of
the the

byre
accel choke 78

second

embodiment
of
is

of

the

in
Is

stricting erated

Ihe

stream stream
the

dynanile

drilling until the the

an

increment
pressure

the

borehole

drill

against

uppÆ end
to pull spring this the coil in

normal upper

the

head

80

causes In

of of

bypass

port

54 by

the

tubular the drill

downward
plunger
valve fine sage the

to

84
manner the
the dasbpot

the

whIch
tb

produces
fluid that

dropping
the

78

drilling the

The
the

lowers

92inthepiston
fluid flow

S5closesagalnsttheseat94toconthe piston to

result the

to restore the

pressure

upper and
the

bypass port
driller continues
is

54

pas

lower

drilling

until

pressure

again

86 downward
to

with its orifices passage movement of the plunger 71 dashpot predetermined
rate

88

retards

dropped
driller

bypass

With sumed
the

The 55 by opening of the lower bypass port lower then backs to close the up the drill 55 thereby normal drilling pressure plateau drilling is re 15 pressure reestablished
the pressure
is

head

which

spaces apart produced

In

predetermined passage of the 68
the creation passage of

manner

the

two

signals

the
rings

two choke

70 The

until

dropped upper
bypass

by
port

the

tubular

extension.52
drill string
Is

the

54

Then

by
closely

adusted to cause apparatus Is preferably two unmistakable sharp pressure pulses of the pressure head 80 the two
rings

lowered

by an of

appropriate

Increment

spaced.Ehoke
the

68 assembly operation 63
Is

continued

drilling

When
the invention generally
is

signalling

bumper
the
drilling

sub

The
signaling

third

embodiment

20
designated similar In

sequently

by withdrawn
to

bumper
in

head

upward through
two somewhat
retracts spring

two choke
signal

Thown
struction

PIGS
to the
first

largely as

con
use

68

and and

produce
the

embodiment
to

indicated

pulses
its

the plunger

to as-

of corresponding

numerals

indicate

parts
the

position to passes to the

bumper sub
extend upper sharp choke head
yielding pulse sections that to

The
in

third substitution

from of
section signal-generating

embodiment
section

25

sembly
eventually ring cates fully

the

64

the

upward through theupper
single signal

signal-generating

substItution

choke rod 40 and

produce

Indi
their

bead choke

assembly head 38
the
first

65 embodiment
section

for the

approach

of the

two

telescoping

extended

positions of the arrangement
are

The
ingly scribed

signal-generating retractable

64 of Ia and
with the

an

upper

yield

$0
is

The
signaling place the

advantage
the character

shown
produced

FIG
once the
to

choke shown

35a

previously pair of

de
closely

PIG
rIngs

bumper
choke
yielding rings

assembly heads 75

is

partially In the

extended

spaced

lower

choke

68

70
the that
Is

The
choke

choke

both upper choke

80 354

range lower
single

between
pair

head assembly 65 35a 68 and 70 Is supported by wash from fl lower end
fitting

and

of

72
pipe

suspended

85

fixed takable

68

70
pulse signals

34

by an
fixedly

pressure to full

approach

of

as
pair of of

or

spider

74
rod 72 72

upper

choke

head
level casing

sembly
closely the

extension

and

an
pulses

unmistakable
signals

mounted
level
the

on

the

at an upper
head
the

spaced
to full

pressure

approach

assembly
for for the

The two kinds of
give the driller the

plunger

78
the

lower end 81
the

80

extends

down
pur
casing

40

nals

two

limits

unmistakable
drill strins

guid
of

ward from
poses 76
slidingly

of

casing by

For

sealing

ance

governing shows
in

suitable

carried

cylindrical

FIG
signaling adrill

manner how

series

embraces In

plunger

78
84
piston the inside

sub assemblies
to

maybe
the at will to

into

As shown
casing 76

coil

make

it

exerts

upward

pressure

on hold

on
in
Is

the
its

45

vary

the

weight ing the

on

the

upper end of the normal upwardly vided 88 90
the

plunger
retracted

78

to

plunger
piston

by from the
end

without pull
drill

well

bore
the to

The

bit

25 26

position

The
with

pro

with
the

dasbpot
piston

passage
further the

86

series of

orifices

mounted on the and drill collar
Is

of

drill collar

26

is

connected 100
In

the lower end
is

of

and
in

passage

parallel

with 90

passage
ccntrolled

Flow
check

through

fluid

passage
ball

by
valve

valve the the

com
check
fluid

signaling bumper sub assembly bumper sub assembly shown shown FIGS lii lb

the

signaling as

FIG
second

modified above
the

prising valve

92
to freely

an

seat

94

naling which

bumper sub
is

Is

drill collar

sig 102

serving

downward
of
casing oil

flow through

to

the lower end

second
signaling

passage

while
interior

signaling

upward 76
is flijed is

The
fluid
is

hydraulic and with
the

bumper sub assembly sub shown
signaling .105
is

63 which

is

FIG
assembly to
the

bumper
above
the collar

such

as

suitable port casIng

The plungEr 78
in

Immediately
third

sub connected

drIll

provided of
piston

95

communication
tubular

in

lower

end

terior floating the

76
is

The

third

contains

96 of

that

embraced
jiston oil

by
to the to the casing

98
equalize wIth ther
the

bumper same construction
ing

106
as

bumper sub 106 is of the signaling bumper sub shown
third

The

signal

In

purpose of pressure
drilling fluid

FIG
stead

but

diffem

having

three

lower choke

rings

in
into

the In the

in and
of

two
drill

string

When
the well
entire
drill

string

shown In FIG
the bit

mal expansion When the
fully

and

before
is in

touches

bottom

the

extended
Is

position

bumper shown in FIG
the

sub assembly
the ring are

63

is

at

its

tension

with

upper

choke and the

05

ned
ered

weig
the
bit string

at

the

top of

the

well

When
the

touches
.1

head
casing

spaced and
the

above

76

upper choke choke head 80 lower choke bottom and

bottom below
to 70 lug
rest

the

upper end

the

low

positioned

few
signaling

substantially

above
drill

the

two

68
the

and 70 75 ap
sing

weight

of

the

drill

When
the

the

touches continues choke

lowering head choke

on the bottom

bumper sub assembly of the borehole and
lObpartislly total

100
first

comes

drill

string the

proaches
retracts

upper

upper choke 35a and

assembly

collapses of the
drill

Thusa
string
Is

with consequent
the the fixed signaling

prolongation of the pressure sig
assethbly

minor portion of imposed on the The second
collapse signaling
it

weight
the

bit with

naL
contract of

bumper sub
80 68 and

major

portion

carried

to

lower choke

choke
rings

approaches

70

bumper sub assembly
the

63

does

not
drill

because

carries

weIght

of

the second

NOV

Case 1:03-cv-02579-RPM

Document 140-2
82234188

Filed 01/11/2007
10

Page 19 of 25

collar

102

as

well

as

the of the

of
first

upper
signaling

of

two sub

the sure

lower
rise

ring the character pressure

will

produce

prolonged

pita-

relatively

parts

bumper

assembly 106
third Ing
drill

100
not
collar

The
collnp4e

third

bumper
it

assembly
of In to of the

When
the

such sends

rise

occurs

the voltage signal discrimt.

because
plus

carries of

the

corresponding

rising

105

weight plus weight the of

discriminator sends responds

and
to

the

assembly
collar

nator

command by
actuating
in

power brake of

transformer

102

the

the

upper

of

two bumper

which

134
well

The

power
type

rclatively

100

signaling

transformer of

functions switch opens

the

manner on

sub

successive circuit

actuatlons

When
the collapsed ered

the

upper

end

of

the

drill

string

is

lowered
completely

10

ternately

and
the signal the next lowering the the

one
causbs

com
the lowerS hoist drill

upper
additional

sub assembly end the
the

mand
power
lug

signal transformer string to In terminate

string

is

low

to relax

134
signal tightens

for the

an

few inches
partially

second
to

signaling the

and

sub assembly on
the
drill

63

increase weight parts of

brake
16 string

movement

of

bit

At

this time

all

of

below

manner
keeps

control signaling

upper

of

the

two

relatively

movable
Is

automatically partially relatively
bit

in FIG system shown bumper sub assembly

signaling
all

bumper sub assembly 63
above
parts the

on

the

collapsed weight

constant

imposition

on

the

d$l1

the

lower

of

two

the

of

the the

of

drill

below

movable
seinbly

of

the

second
the the

signaling top
drill

sub

as
20 of

the the

telescoping leading 11

joint

bumper sub assembly
pressure entrance trailing reversal signal

Thus
in

from lowering of
the

of

wet
to the

shoulder

of

shown

Further
partial bly

of

string

no
into

produced
ring subsequent

of shoulder

choke
Is

head

collapse increases

third

signaling

bumper
bit

sub

assem
all

choke by of

pro

the the

weight
third

on

the

to include

duced meat
of the
It Is

of

relative

moves

of

the

parts

below
the

signaling

bumper

sub

assem
63

choke head
apparent thet the In that

and choke

consequent

withdrawal

bly and

including

two
the

signaling tbree

as well value Is

as the

bumper sub collars 105
of invention of

and shown

25

the

system choke head two
constitute

Illustrated

The

of
first the

embodiment
the

FIG
Imposed
tion of

range

of

by choke means 30
to

10
351 on
the

two
cooperative string

and

361

on
the

drill

second of imposed
of different because

indica The
weights

two

sections of fluid as the

amount
contraction

he-

vary
full

two

sections

approach
create

posed
sub full single

bumper approach
to

both

and changes
of of in the

full

thereby to
to serve

assemblies

may be
the

distinguished

pressure dicative

fluid

two of be
to the

signals

In
of

lower assembly
to 63

100
full

two two
of

limits sections the to invention the are

range

sharp

pressure

pulse approach assembly

contraction pair of closely

movement 30
in

of
pressure

produces
to
full

The
an

principles

may

pulses assembly sharp 106

approach

contraction of three

arrangement
parts of

indicate

degree

which

the 12 with

upper spaced

telescoping for

string structure

collapsed
is

pressure

pulses

shows shown
In

which

identical

FIG
to the

an upper end

automatic
drill

system

connected gauge

structure

with
for

of the range two
of to

spaced widely
the

108
generally of the the

pressure

choke
spaced

141144
rings

110
are

and

pressure to the

transducer

112
108
fluid in
js

PIG
sub

The
24a

connected

upper

end

of

the

relative
is

cor
Into

pressure

communication
into the pressure
drill

with

responding equal parts

pumped The
which
is

string has of the

and

the

choke

rings

shown 141144
the pressure

are

spaced
signals

ac
that

transducer to the pressure

diaphragm
drilling
fluid

114

cordingly
are created

By simply
hy
the signaling continually

is

exposed by
to

extension

or

heavy

coil spring

115
lever

The
in turn
Is is

progressive the

con

Is

traction erator

bumper sub assembly
informed of

connected
nected

slidable short

116

which

op

to the pivot

ed on
to

122
contact

arm 118 The lever
and 124 125

120

tbat

con mount
50 brush

may be
of

stages

of

collapse

assembly of
Invention

120
this

operatively

connected

The many
for short string

principles other

may
desirable

he
is

to available

potentiometer

purpose

carries to

situations purposes

where and
it Is

fluid

stream
to

or movable
potentiometer tery to

which
is

adapted connected
contact

traverse

signaling

measure

resistor

across
is

bat
well
is

For
tubing the being

nose
to

126
signal in

or movable
or

124 of

connected
type

sensor

128

known
ciprocated fluid pulse

art

When

shown
tion floor tubing with

ocean

make
of ascertain casing

the pulse

and 14 show from barge not screw-thread connec
152 near
the the

movable
in the

contact

124 of

it

upper problem

end
to

ocean

pressure

stream
into

drilling voltage

lowering
to

the at the the
Is

converts signal

the

pulse

150

epproaches
gradually

152
until

then

lower

discriminator with with of the

128

The
er

00

the tually

and and can be

at
Into

equipped
identical that

signaling the

bump
rings finad of the

touches with
the

rotated

threaded

sub

is

construction

engagement

shown
are

FIG
in

except axial

two

choke

The
vided

section series

string

of tubing choke

150

is

pro
ltd

increased

dimension
he

For

example

of

equally

spaced head 155

rings feeler

upper upper choke choke
It

choke choke
ring

may
35b

of

the

extended 10 and
length

00

for

with rod
serves slidingly stop

on
choke
the

lower of
the

156
158
as

extends the

may he of

extended

lower

flU 10
apparent
that with In

engage
thus

head
feeler

155 rod

shown

in

FIG
of

13

and

suspend
Is initially

choke

head

at

the

when
70

150

termediate

shown of choke
pressure
rise Is

PIG
Into of

lowered

The

10
upper
character

upward choke
ring

spider15gmayheapieceofsuincJwiof
configuration

movement
35b
in as

shown end
the

IS
feeler

signal

shown
as

The
spring ing the wire casing with

FIG
the relative

rod 156
the feeler

provided

with enter

in pressure within the

being

prolonged ring
the

long

160

to

keep upper

rod
feeler

choke of

like

maninto

152

an

downward

movement

choke

head

70

end

of

the

rod

156

is

formed

NOV -2899

Case 1:03-cv-02579-RPM

Document 140-2
11

Filed 01/11/2007
3223183

Page 20 of 25
12

When
with the water

the

tubing

string

150

being

InitIally

lowered
in the

mounted
of the

longitudinal response

movement
to rise in retraction

In the

the pressure

feeler
is

156

fully

extended

as

shown

of

13

continuously to serve as

pumped
signaling

through

stream

of

fluid

and

di
to

tubing quently choke

string

medium
the the

rection retracted sure
is

said

one

member
stream

being
to the said

seek

Its

of the feeler rod 156 causes any retraction bead 155 to pass one through or more of
rings the extent to

position the fluid

in opposition

normal one

pres

of

whereby
as
it

member
stream

choke
is

which

the the

rod
result of

retracted
thus

but

approaches
fluid

contracted
pressure

may be
signals that are

by counting
created in the

member
it is

partially

ing

stream

accelerated pressure relatively rise

member
of
the pressure
drill

water With
casing

10
the tubing the contact

consequent
to

steam
rise
at
its

thereby end

150

aligned

with

cause
drill

sudden

152

lower
with the casing string

rod 152 150
causes

156 then
the

In and

bit

lower
fluid

eventually continued choke head 155

forming
to the

passage
bit

for

the the

of
drilling

lowering
to

of

tubing

through hole
pair

to

facilitate

of

bore by
to

successive

warns
tiously signals

the

operator that

move relatively upward through the 16 154 The first pressure rings signal to lower tubing 15 cau
and can end by
the pressure ascertain of thread

of
of
sections joint pair
drill

string

Interconnected contraction

telescoping

for

from
the

whereby apply 20
the

the
full

may
of
drill

be

collapsed

operator

when
string
is

screw

weight

string

on
to

the

bit

or
the

thread
to ing

165

on

the with

may
joint

be
to drilling

through
the

range below
the In

limit

make

contact

the

screw 150

of

the

cas
an 25

applied while

telescoping

152
After
the tubing tool the string Joined to the casing fishing to

proceeds

range
passage two In
In

annular one
of

member
two
telescoping carried into

the

fluid

152
string

may
spear

be

lowered
for

engage
to the

164

withdrawing
wire

the

feeler readily

choke tion

member
to to

by

the

other of

the

rod 156
contracts spIder

surface through

The

spring

fork 160

move
choke
signal

said

restriction

member
the to

sec re
eec-

pass

154
with
the feeler

158

may be
the

rod

The wire or may

sponse
lions to

relative the in

movement
stream of

between
the fluid

two

produce freedom

drop

harmlessly
description

well
detail

pressure

stream mounted
longitudinal
it is

My

specific

of
various

em
my
disclosure

said

choke

member
on which

to

bodiments
substitutions

of and
spIrit

will departures

suggest

move
section yielding

through

range counter

relative

to

the

from appended
bit

mounted
force the the direction pressure at

within

the

and

scope

of

the

claims 85
fluid

means
flow

exerting

Iclaim
In and
drill

of
string

and

normally

having
for the

drill

st

its

of

the

fluid

stream

overcoming hold choke

member
rise

forminng
to the

passage
bit to

pumping

of of

retracted said force

position being
the insufficient to

through
the

facilitate

the

borehole

overcome by

pres of
the

combination
pair

of
of joint pair of
all

sure the
drill

of

stream
the

caused

restriction

of
telescoping

sIring

interconnected

by

stream
the

by

choke

member
whereby
to close

cooperation
relative

with

for sections

and

contraction to

restriction

member
causes

approach the

whereby ply

the

may be
weight of

collapsed the given

ap

of
striction

choke

proximity to of

re

substantially the bit

of

the

string

member
Into the rise

acceleration

on
to
drill

or
the

may be extended
applied

through
to the joint

range
of the drill said

member
sequent

restriction in the

member
pressure

con
in

limit

weight
the

string

below

the

telescoping

while

combination

as

set

In
choke
restriction

which of

ing ring

proceeds means
at

through one
fluid the

range on one
locally of

range

exceeds whereby the of stream

dimension

point passage other the

two and section
In

sections

the accelerated

member
clear

mcm
which of

restricting

the

through

member
high

with

body

of
ring

two

to

pass to

the

consequent

creation in

short

ampli
said

completely through
relative to

means
two

response

60

tude

movement
the

between of
in

the fluid the the

sections to

LA
ernted

pressure

pulse

combination range
is

as

set

forth

in

claim
axial

in

choke

stream
of

temporarily said king

pro-

longitudinal restriction

than
the the

dues and
erate

pulse

pressure located said

fluid

meana coop
55

member

body
as

being

on

two
Is

sections

to

whereby but not thrugh
creation

Choke

member member
rise

accel

restriction

on end

range

approached

consequent
pressure in

of stream

relatively to

sudden

of

the

fluid

relatively

high

suStained

and through
the to the

passage
bit to

for

pumping of
the drilling

fluid

leveL In
drill

facilitate

of

combination
pair

of
of
joint pair the
drill

borehole

having passage
to for the

drill bit

at

Its

end there

and
string interconnected

forming te
the

pumping of
drilling

of

by

60

through
the

facilitate

the

of

telescoping

for

extension

and be
collapsed to bit

combination pair

of
of

whereby
apply

the full

of of
the

may
drill

sections joint

the

drill

interconnected

weight

string

on

the to

telescoping

for

extensiosi

and

contraction to

by where
the

or
the fag

may be
joint

extended
to

through
the

given below

range

limit

by 65

th

of

sections

may be collapsed
given range
the the to limit

applied weight while

weight

telescope the

fUllw1ghtofthedrillstingonthebIy
extended weight
drilling to the the applied

drilling

proceeds
in

through
the fluid

range
in

an

annular one.of

restriction

member

passage

weight

below

telescoping

joint

while

two

telescoping carried Into

sections by
the other

proceeds two

through

range
the
fluid

choke
tions spouse tions

member
to to to

of

the

two
In

sec
it-

an 70

annular

restriction

member by
the

move
choke
signal

said

restriction

member
the to

one of
choke
lions

passage

in

the

telescoping carried into

sectIons other of
the

movement
the in the

member
to
to

between
fluid

two

sec

two

stream stream two

move
choke
signal

sec

said

restriction

produce

member
the to

re
sec

sponse

relative the in

pressure at
least

movement
stream
fluid

between
the fluid

two

one

of

tons
being

to

movably

75

pressure

the

stream

NOV

2900

Case 1:03-cv-02579-RPM
13
said to restriction

Document 140-2
sassiSa

Filed 01/11/2007
14

Page 21 of 25

member
it

mounted
range

with relative to the

lapsed bit or applied

to

apply be

the

full

weight through

of

the range to

on

the

move through section on which
yielding of of
fluid

longitudinal

may

given the

limit the

mounted
force counter the the pressure at

weight

to

the

means
flow
fluid

exerting

while

through

the

range

and
stream

normally
to

overcoming

apairofflrst.zneansspacedapartononeofthetwo
sections of the at positions to the

hold

member
to

two ends

retracted said pressure

posItion
Insufficient

range means
to

and
carried

being

overcome by

rim
of

the the

second tions

by

the said the

two two
spaced

sec
to

of whereby
to close

stream
relative

caused

restriction

cooperate

with

means
as the

stream

approach
to

of

the

io

create ends

pressure

signals

stream

two

member
causes in
drill

proximity of the

the

choke

member
Iciwer

of

range string passage to the

approached having
for the
drill

acceleration string

restriction

member
at

10
and

In

at

its

lower end stream

having
for the

forming

pumping
the

of
drilling

and through
the to the

passage
bit

pumping

of of borehole by j5

therethrough

to

facilitate

bore by
to

to

facilitate

hole

the pair

combination
of sections

combination
pair

of
of
joint pair the
drill

of
joint for extension

interconnected contraction

of

string

Interconnected

telescoping

telescoping

for

extension

and

contraction to or

whereby
ply

the
full

pair

of

sections

may be
drill

ap
or
the

whereby
ply be the

of of
the
drill

may be
string range

collapsed

ap
20

weight

of

on range

the to

bit

weight

on
to

the limit

may be extended
applied joint weight to the

given

limit

extended

through
to the

ap

weight through
apart

telescoping

plied joint while

below

the the

telescoping

while

proceeds means

range on two one of
the

drilling restriction

range
passage in

plurality

spaced

an

annular one
of

member
the

the

fluid

two 26

sections

thereot on
the- other plurality said to the sections to to

two

telescoping carried into said

sections of

mean
cooperate pressure close wtlh signals

choke
tions sponse to

member to move
to the

two
in

sec

of of
in

means
first

create

member
betwen
the

re

plurality

means

being
signal

relative

two

sections pressure

together

producing

choke
In

stream
fluid

of

fluid

to

produce

characterized

by means

of

pressure

signal said

stream being mounted
with

30 freedom
to to the

rises said

choke through on which and means
flow
fluid

second

being

mounted

with

freedom

to

move
section yielding of of
fluid

longitudinal
it is

range counter

relative

move
overall
first

through
longitudinal

longitudinal

range
the

exceeding plurality

mounted
force to the the direction pressure at

dimension counter

of

exerting

means means
flow exerting force the direction pressure

normally
to

overcoming
the

36

yielding

the

stream

hold

choke

member
rise

of
of

fluid

and stream

normally hold

overcoming second means

retracted said force of

position being insufficient to

fluid limit

at

re
pres

overcome by

in

pres 40

tracted said

sure

fluid the

stream

caused

restriction

of the

being

to restriction

overcome

rise

in

stream by
restriction

choke

member

cooperation

sure

caused
relative plurality

stream
the

where
close to the in

relative member whereby approach of the member to close proximity to the restriction member causes acceleration of choke member member into restriction consequent steep

by
the

approach of
first

means
acceleration of

choke

means
the

second
position spacing

means
to the the

past

means

op

yielding

means

with consequent
rises

close

rise

pressure

of

pressure as set forth In

said to

member move through
on which
it Is

being

mounted range

with

freedom
to
the-

11
cludes the

combination means
to retard

10

in
of
rises

longitudinal

relative

the to

movement
space
apart the pressure

section yieding
fluid

mounted
counter
to the the direction pressure at

means predetermined

thereby

means
flow

exerting

force

of of

in

manner
as to set forth the

the retracted said force

stream

normally overcoming to hold the restriction

50

12
cludes

combination means of second
drill

claim 11

in

member
rim of

retard

move
bit at
Its

position being of insufficient stream relative to

ment overcome
the

means
having for the
drill

13
and through
the

lower end there

pressure

the

caused

by
the

restriction

forming
to the

passage
bit to

pumping
the drilling of

fluid

stream

whereby
to close

approach
to

of

the

restriction

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cal-

pair

of

NOV

-2901

Case 1:03-cv-02579-RPM

Document 140-2
j5

Filed 01/11/2007
8228
each

Page 22 of 25
16

meats
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14
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25
string

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46

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16
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