Free Exhibits - District Court of Colorado - Colorado

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 1 of 12
SPRIHGOflUM

Clans

Sante ha

.1

Wildcat

949 1463-9

Anlage E6

D3

United
Rogers

Patent

un

4165789
Aug.28 1979
UI

LS3

DRILLD4G

Mnasy
Aonzejc
Monroeville

xamser--Willism
or

AND CONTROL
753
Inveutore

PTrmWlWsm

Danchuk

Anfl
An spparatw mizS rate of
based speed

Borough Assignee
Usited

Pa
States

employed
penetratIon

the

searching Into

of the

drill

Pittiburgh

Ps

upon
are input

the

two

drilling

parameters base valuse

of both

of revolution

Preset

psnns
at the

App1 Noa
Plleth

ten
start

into the

drilling

control based

mechanism rdiaga the

of drilling

Thereafter

upon

291978

an

automatic automatic the

rate calculator incremental being
is

apparatus

Jut

____ ..
173/4

tIC 1/02
173/9

1/10

effects

to one
established

of
marl-

U.S.C
Field of Search

175/24 364/420

parameters

mired
the

rate

opcnctraticm paramete

Subsequently

_____
Roferesca

64/420
175127
219/2

other

previously

coostnt
penetration rate rate searciting

is -is

changed fount

until

new maximized
optimized

Old

continuously

and
is

automatIcally apparatus

the
additionally

U.S
3320375 3393307
3.633303

DOCUMENTS
Paynal at

hug
175/24

process

completed of

7/2971 10/1971

____________________

3633131
3872.932

0sa
GeaseS

397140
4079793

7/1976

Nad

__
--

_________

provides succimive response incremental times

between
for

accommodating

73/6 which
173/6 173/6

nsm
173/27

of

system the remit

as

well nonlinear

_____________

may occur

oc

dynat
22

173/27

IsIs Drawing

p.

LEGENLt HYDRAULIC ELECTRICAL

Liwa
WIRING

WS

0001257

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 2 of 12

P/cR

CD

00

LEGENO

.-

..I

LINES HYQRAI4/C ELECTRICAL WIRING

.r-

h-0\

It
00 \0

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 3 of 12

U.S

Patent

Aug 28

Sheet

cr4

4165789

F/Q

serve IVSTEM FOR
ADJUSTMENT MANIPULATED OPPOSITE VARIABLE

WS

0001259

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 4 of 12

U.S

Patent

Aug

28

1979

Sheet

of

4165789

DYA

NA CONTROLLED
VAR/ABLE S7rAQV STATE
BIT

MANIPULATED PAR44METES

orna
SPEED

RPM

SHAPE

BiT MATERIAL DRILL ING FLUID IMPACTING CHEMICAL

ornu

ETC
THRUST

RAT

THRUST

tB/

FIG RATE

PPM

SPEED

RPM
SEC FIG

P/6

4c

PPM

F/C

4a

F/C

4k

WS

0001260

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 5 of 12

U.S

Aug

1979

Sheet

04

4165789

ToMoroR

1111111111l11
P5

PRESSURE

JO Cit rI/at/ST

ii

II

IliiliuIitl

ii

.1

till

tiltIIitititr

C/Q5
WS
0001261

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 6 of 12

4165789
ThSfthcpr-entinv-ntien
insides in

an

DRILUNG

OP3ThllZATlONSEARCHG CONTROL APPARAIUS THE INVENTION
za

AND

inaily thrust live

in

the

two

drilling

puametea
are independently

.
opera-

and
variables bat

an

Interdependiag the apparatus

BACKGE.OUND
4-..
out the
salient

with

one

another

according

in

again

brought

mime5 I.. ctuvS

ta
pro10

totheprtinvomonutasearchwgprogranskr
tiithe which

nets

ores

ornuting

nonpro-

When

the

emaaatoJ
danzig

penetration

rate has

matn4s4
of
to the

for the

tiflit

variable

ner
time

lroceU
segment

in

proportion

0inaslnafi

any
the

3th
advance
represents the in of
tire

variable
Is drill

is

held

constant

For

instance either
iieti

of

dnronnfl
reduction
instability

mtnt

contmt
process associated

e9IiP
productivity
itself

may be

Incrementally aenewjiiie

changed
tiietiinntis

Moreover
reflected drilling

of

coestantm
is

inynad bolt

the melting bit

inclic
maxim

by

the

calculation

apparatus
ala

at

Specifically

the

Once

this

has

bees

ranched

sqer
drill

cottingpon
wathinincuole as

theRPMVulne
thenheldcotethethnistspplledtothedrll Is varied until ling inremen ally new apparatus ratian ate is uroca
pearS
during the according waiting in the

have

nnwted
.._ stems .frpm

in

%V55S
time

time

mad
Is

as welt

The major
cusimied
cut

ezpeme delay sn.soo lies
the

it

the the

ofdailæng.
to the present invention also

m.drilllng

roof

ynv4m

Yi
the

operator

Unuzn
input

fed

pres-

The
incororates chahges before

paratna

boa

ates

adjust

thrust such

and

totque

drilling ducts tune This ing the

While

a.rionsciennflc the
drilling

wtohe satn W0
In so

vulva

of

the

two

commencing
in the time

-yet is

ant
to

drilling

parameterS

incremental

change
for any being conrespect io

The

waiting

compensate procen
with

results

bf
suggests in other the

consume
Is

in

roof hole

otherwise advance

changes

trous
changes

ma
In

response

of

the

specitically response

applicable the in

especially in an the at be

unpottant Ideal

the

.time

applications roof
ill-Ill

Stuationj

of
istics

stan
the rate

4rtdinaly

rock

or medium

being

drilled ate

should
all

he

maintained
It

maximum not been have
bolt

penetration past

atg

rvat

mty

also

sUede according

response to

dine

of

times
this

should

obvious has

sp
tithe

performances

that

obtained.the drilling

ta
from
akin

The

apparatus

The

provides

adeaJnI
drilfirig

the present area of insensitivity for to preclude

invention

specific

causes

which
in

calculation ration

uenetrationate the procedure

consumption an aaswnedjiiut
hole ated roof
drilling

Inherent

comes

of

incorrect and
slip

that science
is

within
oj-szslr

rate so result

of

it

nota

irujlflitins

of

jan by
bolt the into

pesenl-day one

thbuglt

that the the deteimined best

driller

who
of been

dynanzia which and
sate

feel
drill steel

progras and roth It

may oomw due to.mialFvariancesjn etc ofthe rock hr coal medium thrust may change the psdportiopallty between
rate-or

recently

between

RPM
yresent calculation sequence invention has pens-

that the fled that

nnmizemt
steel into

rate ofadrill any

and aaaoawhethe

medium
sandstone

The
Is

medium

be tea
scientific

or
act in fact

coal

ItselQ

as

its

according apparatus base microcomputer rate as well as the the

to the

of

lusceptible arid control

and do

of parameters
in

tration
asentat-

timing

othe

algorithms

an

changes need

to

two
the

drilling drilling

parametesu
parameters

Thh
obvi by
the
drill

optimized

rate of

medium

being

tWat
While tone
the of art rue
is

very

precise-control the

ovte

des
in

icr inaccurate

and

mistaken

ccf.att
rate

area and
Si

the

operator

himselfto

penetration

and

hilly appreciate values

of drilling parameters

fed
drilling

of
rate

md
Dirt

of
specific

parameters unanuetin rate of order the

which

may be
the

penetration

lo

the

precise to the 4rilhing

over

the

manipulated

to accomplish

parameters there

and
realir

St

control

mninth.M

penetration

me-

system

improved and an
apparatus

speed

of

dlnm

penetrationofthedrillbitintothenwflnin

tt
The
within cally present dedicated

DV

Cit

INVENTION
60
is-

it

general

the

invention optimizing

toprovide
rate

dstkatad

to

to -an rate

apparatus

of

penetration

of
incrementally speed

to optimizing

of

penetration apparatus

of
autoniati numerical ing

medium
the
drilling

bi-ielectively parameters

and of

cbang
thniat

medium
provides

to

he

The
rate during

and

by

roof-drilloperator

with

continually in the values

alternatively of the

applying parameters

changes independent
rate
is

disrlay

penetration

drilling-procese

drilling

of

and

aotomaticalfr controls

conducts to -achieve
bit

self-adjustment

of
pane-

each
for

other

until

realized of

roof-drilling tration rate

such
the

maximized

of

the

parameters-with being

respect

the

of

the

drill

into

median

rnnaining parameter

constant

WS

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 7 of 12

4165789
It Is

another

general

object

and

fe
for

of the

present auto-

compensatd

electyohydraullc

flow

valve

while

invention matically of rffl

to provide searching

aa
for

apparatus

and

IS friceliiitrohydiauli
signals

pzessure

reducing

Sn The
to

an

optimized

rate of penetration

train The hydraulic

operators
1$ are

control

given of
drill

medium
and
thrust

parameters
efficiency

upon the drilling for maximizing the
drilling

two
electrical

1$ and from of

augmented 20 microcomputer
present invention

with
pee-

of energy
the drill/medium another to provide the thrust the time

transfer

from

equIp-

fared

embodiment 20
is

the

meet
ft

to
Is

crocomputer
feature

Motorola of

Model
special

6302 mlcroprooea
control

yet

object control
drilling

of of

present for drilling

sot

Through
within

means
the

invetition

apparatus

microcomputer computer
the via

memory
electrical

the
line

output

based and

npon
drill to

two

parameters specific

speed
includes
tire

10

voltages used and to

from
manipulate thrust

22

which and between
the

incremental

rotational

velocity

RPM
to

we

changes given values
ajiother tion

also

vertical

Thcontrol
the

to calculate
tale IS

RPM

and

thrust

so
per

emmain
as

of

two

parameters

before

commencing
permit

yet

maximum
is

rate

of

penetration

minute
use

in order the

stabilin-

the In

in various the present

rock

types of system
control

of

procedure
calculation oldie
result

and

to preclude rate

operation

lnvention practical control

within ides

the and

penetration

of

instabil-

the

which

occur
to

process

dy
te20

microcomputer which is capable
roof
drilling

20

develops
In this

providing

optimum case rock

newS
spouse Cther

compensate

for

any

changes

time

opthnum type
bit

implies the

the

or optimum imposed by --4
the

drilling

rate in terma

of

objects obvious

features add will

Ihe

present

invention

constraInts chip

and

rod
afar

lll
of

in

part be
the

part

become

appar be

art as

following

description characterize

proceeds
the claims

The feturea
snneri
to 25

cadltios Such contrls and more more

when
efficient drilling

and torque will provide

novelty out

which
with part

operaS
and
as direct

Pnnhermopeja

pointed

and forming Bnsr.r

In the particularity of the specification

uniform operation

action

of the reduce

manS
as

Dca.nar

nt-nit
that are considered

Ga
in 30 as

advantages delay
at

will the coal

be
face

reflected

The novel
of
invention claims are

characteristic

set forth invention operation

enaesin geoin Positioned on the manually
reversing

p5y
and
operator
drill

therefore

represent

advanta

panel

appended
to
Its

The

howevn
together will best the

24
of the
drill

not shown wetwo and The drill
bit
is

structure

and and

addle hydraulic applied controls operator to the

rotation

tional

thereof

be

under
in

over
dliii

the

vertical

motion
driven

14

thiust

stood

from of with

following

embodiment
jrmctiou

pr

description invention

of when

preferred

bit

operna
by
the
ilrilhlrg

read

con-is

as at

2$

tIm

accompanying
block system control according

whereinr diagram ofa microcom.
to the pres-

of

the

30 permit manual and

control the

PICL
puter-based cut

functional
drill

sequence
well us tiak the the

The manually operated
operator controls are

as

employed

invention
is

manual of
the
drill

positioning

permir and
Lontroin

PIG
optimal tus

functional

of employed
within

40

drawal
the

while advance with

the after

method
the present invention flow

appanthe

eLwsl

drill

has been 16
reversing
drilling

if

achieved
indicating the present

The two

electrohydrnulio the

P10.3
rameters

further Incorporated

pa
4$

which
used speed

are in sates

manual of These

valves

are

within are

invention of

to provide

precise

die

flOS
ships the

and
the

asaumed
control variables

are

set

from
tri

between

manipulated

an
the

operators

panel

to regulate
oil

flow
to the
drill

drilling process

which of

form an

present

motor
respectively thrust

and

premure
operator

thrust

invention

The

RPM
electrically

FIG
derived sure rate

is

indicating

empiricallypresthe SO

operator

30 32

are

canneoS
as are
tire

to

interrelationshIp to the

between
drill

hydraulic the the
drill

two
valve

valve

amplifIers are

respectiveljr

These
vcltigea

clrannelldd

motor
speed

thrust

amplifiers output

necenary
operator to

inasmuch
controls

of

and

the

of

from

the

insufficient

DEZAILED
in
Referring to

cnn rnnea
55 there
is

in

ccm5
elect rohydraulic flmctiousl Positioned

andbf

effectively

drive

prre
16
relationship faterface

now
premure reducing both an
input valve

nO.1

shown

and
input/output output

diagram cording
the

microcomputer-based

10 The
is

anthe to 60

with

the

microcomputer
interface

lOis an

tothØ

prt
to
drill

invention

output

of

36 The

the

born

the

rot
line

mnjonrputer-based
effect input

drilling

control 12 to

employed

motor

and

thrust the
drill

crocomputer 22 while
the interface

20 through

previoudy
receives line digital

14 The
drill

motor while
force

12

is

rotate

20 microcomputer 36 via an electrical 36
functions as line

from
input/outto anelog

the

thrust
drill

cylinder
bit

14 provides of

the
dril-

put

interface converter

necessary

to the

in the

logic

through
tdigital

22

at the via

some

time

lag The
hydraulic

acts as
drill

analog the

converter by
the

3$
36

ojse
which
to the

head
valves

is

fitted in

with

electrically operated

operated by
signals

6$

quently
will

inputs

which

turn

are

descrlbedshortly converted
todlgital

arin
before
vIa being

form and must
passed

fro
valves

an

operators

control 16

panel

Two
16
isa pressure

air

presentedat

digital

microcompitter 20

3$ In much

WSOOOjz3

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 8 of 12

the

same minnek

the

output
in

of the
detail

which belowYmust
the

tiotte
of
the

indiat
ti

dod

did

1ay
the

uhlt

anonitoring comparison
limit hydraulic

again

described

Sdisfrlaeernent vith4liª tæonitoringof

and

of

iwanalog
peter face

famE The
its

digital

output

from

mkrocominter-

mob
travdaid
pressurt

frepiograntned
drill

20 must be 36
prior to not passage

to analog

ken

by

to the vllvdimpliflera32 respct to
avisisal

AdetalledcrplaoatiOn within

of

34

ThIs

the

caseboweverwith
generally
at

stmategyincorjibmated

display the

unit indicated

40 42 The

output

from of

be

Sd

cmal

gradient will

the jneseist

iivintion

balow.

input/output

are connected

to the valve output the
10 iimnplifled

to

FIG

themeb

shown employed
the the
art

of
hi

auzplifler

an

electical to

line

optimist

gmadtmttrndhed
the presentiuvealion
Is

and

interface

valve third output

34 vita of
the
inter-

foenlngthe

basisol roof
state drill

operation

second

electrical digital

44

otS
kchd
optimizing indicated

advanced

rock
cnallred

fbw
the

facetothe
cal line are

referred

bin

as
is

Asiudicited
provided

in

toggl
line

switches

4$

cookiol

searching

progmum
In

and

by
set

the

atm asaniand
or

P10.2
speed
values

The

pro-

amplifier

32and

between

theline

44 and

amplifl

34
any

inpectively solely

50

are provided operation along voltage

gram it amount or

effect drill

laaementi
rotational

either

to the pro-

of

permit

manually opeSbie

drilling

gummed
after

amoS
the
drill

At
is

the

start

cUbe
preset fur

portion

thereat
is

labeled
electrical

computer output of an analog
the

liuie4l along 20

collared

both

thrust and Subsequently as able
is

are

employed
the
drilling

tIc tilling iarameters

propam
is

hydraulic

valve as

sunmtg junction atplificr 32 SimIlarly Valong
34
is lIne

of
the

one of

inAtad by
has period
feet

age

indicated

44

to

the etectrohydianlin outpbt oldie
lIne

or parameter

valve intcatce
digital

an

analog junction

from

the

brief wait

in P10.2 Once the vailmaaipuisatSm isuuaat or delay by boa 66is cC

64

been

the surmning

ampllflet34 to the 23

kctSme
medium
with
lafioa is

per minute
drilled jisieviously

idvance of
calculated

the

drill

into the core-

Vapplied
is

being the

recisdy value
the

and This

unit

40

to

Illuminate

rate

of

niceIf the

FPM
As
input

display

representS
this

bybosea

add or

7OinflG2

indicated

P10.1

the sources

to the input/output

of

variable

interface

come from two
positioned the

The

source pressure

of
30

manipulated vided rate

either

drill

has

pie-

to the Interface

derived

from

trans flow

measurable that variable

Improvement
is

the p.rtiittow Otherwise

deter 32
valve $2

the electrohydraulic

again

16

motor 12
hydraulic

prasure

transducer

depending that

mthures $4
running 12

line

between
provides

the pressure along the flow valve 16

the m.agniSde of the upon variable deremented by one-half

iawnnd
kept

the same

the

drill

the 35

oppodt
result to

is

incremented one increismutal nrCrSnt

motor
to the face measured

of thange
Ia

36 The second
froni the string potentiometer

to the

lute-

one otthe
Should at

58

P10.2
be

change
to

in the

rate

movement

of

drill

bit

jee
line

PPM
provided 40

boat
idjuttlng inciranetal

axutant

ti
line

sigaal

is

into the nieditim

beingllled
signal intethce

string

to the the
less

boa 64 rita change
to to the

to

again

5$
to

provides

vbltnge

did

injzridotput analog

Vs 36 Both of
are for use

incense be
there

Should
negative

however
constant

voltages

or equal

YLand
digital

volt4es which
interface

converted
the

tot

command
at

adjustment

box
the

yin

this

by

the

in

cumWa
drIlling

wcnmhud
45 etsangein
this

74
In

%to

adjust lance

pant
the

conirol

culcula1idna to previously values

variable

with
at

As

alluded

of
into

penetration.rate.As parameter sate has resulted aseilip

hwGrsfrd

71inoe

parameters motoi and along the
ten is

of

thrust

RPM being
are
specific

input

the

drill

varied

of
fist is

thrust
lines

cylinder

hydraulically

actuated in

penetration the opposite

systejn

manner
drilling

wIth
$0

variable matting lpprbjiriaie

or parameter
incremottat

jwo

arc

used

to

control

the

pamanie-

vided

change

dedved

the

of

apparatus

along

with

delays

to the

sdjustmetposa
is

shown

FI0.L
high capability calculation $he to

anuS
microcomputer 26
increSentalty

hiboxa
vsrIidia
varied
until

Ths
an

second .anner otimiaed
as the

The
provides

first

power

repetitively

omduct
laysone and
Øaecuted 5$

miny
second
tion

dontrol

functions-within

huodttdtliscf oldie
present

was parameter mnIix-.4 is

penetration repeated

Se

prooesa

is

preferred

daring
is

the

drilling

ot
viried

the

medium fiSt
so thit

ntameter kept the once

the miciocosnpnter operations fenctioba

20 aecutea

appkoximately
drill

ivhile
is

thousand control within
ability

in 0.03

then

ffnatfr

revraid
the

static

which

arc

repetitively status pndtioas

while ter
it

priiously
foi

vriedpirmns
oftherof domrlbing
reIn-

inchae of
operator the
drIll

and

rmectu-

switch

60
this

Feld

static

or comstait analgtkithin the control that

The eboiceof
drill is

clam

monitoring of the unit

and

casupu-

result for

hypothesis
drilliag It

tation display optimal

minute which

function

SuE

4%-3
of talc
drill

slculations for

that

apply
the to

classical

gradient

algorithm

tionshiphavin of elficiencj
65 scrlbed

optimum
drilling

paration penetration value

ni hiferemiallyS

don3binatoris penetration naliol valves

2nd
transmission
sigisals

by

the rate

of

drill

PPM
isa
rbtstioaial

achievas

of

the

proper
the

cosibi-

annum

Steilyte

of

the

of
and

electrical

tb

operate value-of

hydraulic

tymninipulatedvariables

of

veloLlty

tO

display

current

the

pacer.-

PTheloug.terin

iinIablin

which

WS OOOI24

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 9 of 12

4165789
form rock
part

of

the

drill

opdating
remain at

conditions relatively

and

average

friction test

.hetweea the

the hole the

rod

itself

characteristics

constant during

and
onein

within

therefore bole

are assumed

steady or

state

By combining
thrust

two

functions

relating three-dimensional

drifting

Shod-term

insignificant Process

change
opist during

to

the

r4te

of
developed theory

111
leant

to005
in

relationship she evolutionary

has

application

so

the

increaser process

rock

hardpress

are

treated control

optimization

program

temporary
control present

and

ovcridek

implemented

within

prrsait

metho
employed
errjloys
is

tioaships within the to

Applicants of

eaperimentalconfinnatlon
rate drill

the speed

and

thrust

The
apparatus
tiorsary

drilling

method
invention

respectively

were of

succssful

Daft The

of

the

an

pvohssanedefined

was
the

collected
drill

during

steady-state into the

running

optimization to steady-state

theory

which

particularly

ap

the
rate

drill

inedina

nable

optimization drilling within

of number
evolutionary
Is

penetration thrust

was

recorded

for.speciflc

speeds
data

process

such arc

as

rock

settings
In

The
reqidretnent

from
that in the

strategies ration

available the

optimi-

tio
1$ does tkntst

conclusion

steady-state the

choice

of which

on
noise cons-

not

reflect

which

RPM

and

such
puter

factors

as

inherent the

process type of

stability

must be each

manipulated in order state to

along

capacity
the

constraints chosen

non under
pro-

trajectory

an optimum nIntsin drill wan and

aocelera

bemust be

upon

system

The

current

strategy for

sween
during 20

lather

determined

evolutionary

optimization

the experiments

that the consistent drerthy

thrust the

con

is

discretized

incremental
strategy

stepping

of bnplemented
is

increased process

a.ann
constraints

changing procea

optimal within simple present

As
this

currently

and

possible for data

invention acting

relatively

instability

During

some moves
evLlrncwt the
drill

gathering

and of

slow
stability

As

will

be

discu
brought

pro
of the

can
drill

instability

was
of

because
nonlinear

considerations

process to the

advantage form
the

dpiamia slow system as programmed
Is

by proven an
simple to
facilitate

rod

or sticking are

25

in the

rock
the

deoced

by

steady-ate conditions flow diagram PIG
value applicants in data attempts noted

evi

sabian.
the

programming has of program

into

memory
oconsuming
only

and

yet

date

the

graphs
set the

PIGS
was
die

and

minimal amount 30

don

of

steady-state

development

genera the

memory. noted on and
the the necrarity existence efficiency she independent

following

of computer

algorithms control highly Independent

speciflcatinns
Is

As
is

previously

bressence
to act

preeEc.t.d

of
or rate

independently

nonlinear

process

relationship does

of

penetra-

dyrna
each
35 has

cC
most improvement
at

variables

of dently

speed
the to
drill

and
speed to the thrust rate of
in

orparametuts Taken were

or

after

been determined
efficiency

to provide feet
this

the

parameters penetration

in drilling the In mines

per

minute

each

ne

of

sumS FIG
drilling

be
the

related

tionships

to those efficiency to

shown

FIGS

by do and from

pros
the
tinie

In

effect

the

deter

the

energy transferal actual rock
penetration at constant values

arrive

at

and
feet

maintain

find

described increases

by

rate thrust

of

FflQ
of peneonin

as

40

rate

of
is

drill

per

nilnute

anon

the

rod

fully
.in

protect

ae-vt
due
to effects

the rock

functhm
chaiacterlatic control

Once the drill the idly collared further don rate occurs wherein
caine
the rate

highly

implement
action as result

means or
so so 45

to noise

of

of

penetration

to

remain

constant

measurement
characteristics

or

insipiflcant

sock of

decrease
reduction

few

conceivable

factors contributing

thIs

efficiency
drill

the computer
to

control

algorithm highly

rep.rewca.t nonlinear for wait

so
tip-

The
therefore the

rod
is

begins

bend
in

within

hole

doe on

Independent by
control

prueen

consumed normal

overcoming on
the the

namia
computer
each
drill

providing

or the

which
thrust

e-wntrd
drill

With
cutting

forces to

drill

hit

slit

manipulation penetration

or

speed

Thus

edges

are
is

degraded

extent

that

cuttinj

rate achieves

new
delay

steady-state

value wait

effectiveness

reduced
in dry chip drilling the

before

an

analysis

of of
several

manipulation

Principally

nonoptimusn
result

cutting $5

conducted
period
is

Adjustment

or

method which
so the

which

ma
between
values to the

dependent upon system
bit

factors including time the

methods
similar relationship penetration factors
is

trohydraulic

response

thermal

cn..ata In

of
pep-

FIG 46
rate

assumed

the

depth of of of live
piesent

of

RPM
which
this

at constant

of
pcrio4

embodiment
area precludes

invention Itis wait

thrust tenet cInder

contribute

alain-

period
as

of

on

curves

may

which
result

instabilities

may
dynamics
requirtment

the

of

nonlinear

process control

.than ness

The energy level is producing Thus the may be removed
is

at bit cutting at

faster rate effectivetern-

The computer
conduction
able 6$ the.flnal

altositbin

of

of

independent along sate preset

manipulitions

of each
trajectory to as

reduced and
in

operating

the

bit

high

manipulation in

optimum
thrust

peratwic

of

achieved and
the
is

Increases

bit

rate

of

rotation

produce

non-

followt reached
or
drill

Once
the

values appparatus

are

of optimized chip volume amount of eflergy increased

Again an
is

control fixed

incranests

consumed

as

resultant

amounts

This

action

WS

0001265

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 10 of 12

4165789
dud
repeated pieviously system the negligible rate Subsequently variable ketained
this

occurs

in

the
is

implemented

simple

within

the

fenetration

same

process

programmable Looking
based to

memory
is series

pr parameter steady or
static

which had been
condition forth

FtC
therein that

of

curves of
the

The

upon
t

empiricallyderived
Is

measurements
Importatit to

contimies

to alternate variables
this until

and
the
final

between

variables

nted

with

manipulited If during

dpth
rafte

PlC

particular the variable

recording

or

chan
on

reachecL tration thrust particular the rate

iterative result

process an

the

as
full

increment occurs

fl or
in that deterabsolute

olpenc-

ad
with
JO

is identified

recorded
relate

relative

fle
time

hojizntal in

coordinates

toSs

or

one-bait

decrement noon ihe

increasing

variable

arrow
proper

In order

toplaci

ibe viriahles

PIG.S in
that input

of

ati
sate

decrease
cit

Oaceithasbeen
is

perspective.it pressure frottiorsal hydraulic
is

be

acted

P15
into to

the

tubed
steady-state continues signiflcant
drill

penetration

at

an

hydraulic
drill

to torque

marimuan
to search tor.an

system

fee the event lasts

motor

Pp

is

thrust

optimum
in

in

the

the

displacement of
drill

amount
itt

of
in

dl.equal to

occurs

and/or

plwnwnt
the rate

qi.L
thai

cipenting

of

penetration

RPM
be of

is

rotational

veloc

flie protection fiiction

compuler due
to

cpntrol
aubetantial

requirement changes rock in the

for

ity

of the

motor
at

Thkspecftlc
poinjts

effect

upon rock

the

drill

placement
is

given

h..tnl
tIm

bj

highly

stratified

chatrlstlca

Even
20 had

though
changes penetration
all Its

cbicved
increases

through
in

unique of the

override rack

syS
on
the

hardness

which

or during
unlen
condrill

Abrupt

optimum

rate

was maintained
excursions the stable

Addition-

computer

operaticrn harardois

be
condition of torque

ally through
drill

set
was
drill

tosqan
the

the

tamed
trot

st fl
algorithm
drill

as

the

provided-within
differentiates lint

computer and
thrust

conin 25

penetradoa control puter condition
after

rate and

maintained bit

cam

the

the yespect

hydraulic to time

pressure

drilling

r.nainst in good holes Overall the

the

mOtor

with cot or ltthe

or

frnrtrntioa aate

for the per

tests

wdravsthe
Thu
actiop

1a4.inaSact
iiitad the
difftrtntial

tween Once was
for the

three the

feet

minute

performed averaged and six feet per n.satO
the

Scent

drill at

had been
poiqt

collared

comput
the

aStUl
values point

a.preprogtthnniedconsuut OIthe present invention
ii

prcfaredcmbodimatt
override greater
in

initiated

tAt
speed

this instant

set

at

changes

pressure

torque limIting 30 than 300 psi per

and motor
initial

At
in thrust

inerementa

Patf
period
rise in

150 c...o4

s-c4 It mat
that atsaximum scribing

the hydraulic

notd computer
function penetration

premure such

the

motor
search

line increase

Alters was
called

five

second

wait

hower
to the

However
Increase thrust to
Its

East

P.ee
at

control

continua

arrcv
35

chart
the

aplkt
original value

rate identifleJ

nttd
thehydranllc as via

by

new
iii

de-

inP

decreased

in the

block the the
drill

poSt
after

At
the

that

diagram motor
line

5415
system

posWe
variable

At
second

computer 4ithe
at

control increase

was about occurred
rate the points

to

hut

input pcessure

to

analysis

penetration

crocdrnputer
its

transducer the

and

increase

was withdrawn grent

pointS

Between

five

Vi
constant for wait

sampled by
the

period that

computer at maximum system
in pee-

and
other

air an increase
in

was
than

prevented

excursion

300

p4 per ancon4
at and
in the the

Ia

Poe
prurent at

instnsrinvention

oeSdeprovWon
effective

erred cmbodimtht-of sampled
differential
cit

tem became
If limIt 45 caused

At

points

mann
sS$nnyt

present

sya
in

the

computer
time

one

second the predetermined current

ezcec4s

Between
increase spik in thrust

eomputed points and was
negateat

penetration

an This

additional again

to

300

psi

p5

second
control action noise

the

or previous

was caused came
bite

increment

drill

negated
algorithm

theoverride

provision

coipoter EvoidancØ
electrical

.The

don
as result

and
takes the

iujn-esent increases

PPM and
which well lint

opus

occuning

of

point

above

its

measurement
or the

changes changes
in

so beyond takes

optirnind seconds point

rate as

Appruxidecrease

rock

cbancteristia

insijnlflcaat

conditions the control the rate

met by
thrust

cia deadbaad
prevents

RPM
on
the

Just

.Gelw acii4

the upper Atpoint

tote
Is

fit

computer or
range

control

arrow
thrust

RPM
of
result

It an increasing
the increase late itthat

action tration one-half that

and

RPM
This the

for-changes are

pentequal
is

and
because

At point

11

ci

drill

len

to

moved
occurred
the

decrease t%

in penetration

foot per
it

minute

ass

At
upper
alter limit

fl
top

in that during

need

for

computer
in

control

RPM

driven

agaiato

Continued

action
tcristies

Insignificant

changes

characthe

increases

p0512
evidence

until

orindrlllingconditioasas rniciocomputer-bised control
lcirgth

awhole
control the

The
overall

implements or

so

The

graphs

indicated thrust

an indepen changes system
to

deerein for

nature

to the inaction

incremental control addition

ment

size

wait
set at

deadbantt values to

constant for

searching optimized

of

the

present rate

for torque experimental ously

override

be beat of
to the

In

running These
prfesred

values

previpresent

optimization

of

the

penetration

sate
drill

there

was
drill

p-S
as steel

an

noted

embodiment
according
drilling

65

concomitant as the

prevention prevention

of

bit

invention

but.may bevaried
durini these

of
present penetration

the

or

inentset
cations

any

setof

conditions

Mcdiii-

rod

Therefore
for

invention rate

not

only

of

constants

or

control

may

easily

an

optimized

bat

pre

WS

0001266

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 11 of 12

4165789
vents increases
in in drill bit

due

to

undesirable
drill steel

The
or
drill

apparatus applying
is

according

to

claim in

in

which
values

the

downs

the

rneansfor both

changes
configured value to

rod
In

parabieters
as

provide

as

conclusion system of

it

should

be
invention
In

that

the

drilling

well

creases

in

of

parameter

being

control

the

present

cen
while the
steel

for control

of the results
bit

drill

an

optimum

pro manna
to
drill

cba4igtd

The wears
each

aparatus

according incremental operative

to

claim In

which the value
input ceases

the

of

operation as welles

for applying
is

drill

operalor
is

Drill

parameter
until

to increase

such

bending weak

prevented
in

More
operation into realization present high an the time
is

the the

calculated

rate

of

penetration

to-

the

any

dulling

10

increase thea hold

means

for to

applying

required greatly

forthe

penetration to

medium
optimized control

being

daease unt
at the

parameter

changes value

shortened

such

value

constant
stabilizes

penetration

rate for the totally present

np
IS

peration
two parameter

maximum calculated relative maximum for
Into claim for periodically the drill to

values according includes to the

tem

input

provides

drilling

The

may
drills

provide

remqte
reduce

operation hazards

of of

would
to the

greatly

PP
The Mg
torque the in riding

apparatus flirthC pressure

means

tend
over-

and
incremental than drill to claim the ha given preset

operator directly
in

The

holdup
in

time

seductions

resulting

parameter

crases the indirect

productivity advantages save realized

be

obvious
the present to
dalI-

change

torque

as

grater
to the

value

rventmg damage

1Mg
abuse

method

additional exacted

expenses the

related

the

The
torque cretnenta

apparatus

according

wherein paramet torque
is

said.
in-

reading

normally
previously certain

upon

drilling

mama when

andes
the

under

manually changes without

change
to

grater the dead-

controlled

systems
in

While
noted the

may be made
departing
It is

than

300

apparatus invention contained

the intended or

soupe
that

of23
all

The
memis
into the

apparatus

according

claim

wherein of
the

for calculating

the rate of

herein

involved above drawings

includes

matter the

in the

description
shall

shown

menus
for

for

in as to trntion rate in

of
additional

the

penn-

accompanying
not

interpreted

which
parmneter values result

illustrative chiZitS

in

runisg

sane
functions

cbang
ties

due
the

to

minor
process

which

occur of
apparatus

of

apparatus

for Apparatus and automatically

of

drilling

searching into

for

rate of penetration

of

drill

given

an opthnind medinm and
rota-

dmics
to The

according

to

claim

wherein
is

she

mans
to

for

applying
the thrust valaesln values in

configured
to

upon
tional

the

two

drilling

parameters

of

thrust

change

100 p5
of automati of

speed each

said apparatus given

comprising
preset the lating value apparatus rate

RPM
itwa
Apparatus
peaetally 40
drill

parameter

50

means means

for applying

parameter
for continuously

for controlling for

drilling rate

and

of

an

optimized

of upon the
for

tration the

of

drill

into

such

based
input the

upon
drill

within

given of
drill

medium

based
thrust

drilling

two

pararrietsic at

values

hems
and

parameters tie applying
liszt in-

and
the

apparatus

any given
in

tmq

emciency
to the

of energy tranefertm intaice

means

for continually

alternatively value while
until

mast

drill/median

apparatus
tIle

corn

cremental

parameter
drilling tratioa for

to

the

drill

the the rate
is

means of
penn-

for progressing
drill is

medium
value

parameter
drill first

constant into

medium and of

maximized

ns
each mesas
50
drIll

collarudi given parameter to preset the drill penetration the drill alternatively In

for drilling for into

such

parameter in the value

for applying the

changes
ramcter paranieter

second
the

drilling

pa
is

calculating

rate

of

of

thedrill constant

while
until

keeping rate

IS

such

medium
being

based and

upon

two pars
applying of one

of

penetration

metric

values for

input

maximized .2

such according
includes to

drilling

parameter
in

mean
said

continuously incremental

The

apparatus further

cit
in the

automatic of
55 the

changes
to the

value

apparatus period

mans

for providing values

ait
of
the

drilling

parameters

while keeping
until the

incremental parameters

changes

other parameter
rate
is

two

drilling

before

commencing
to permit

yet another

tration being romatic

mct4

value

constant for

pene-

such

one

parameter
an-

incremental the
for drilling

change
apparatus times apparatus

in

order

stabilization

incrementally incremental

applying changes
parameters parameter
is

and
the

operation

and

to

in

value to
the drill

of while

response

of

apparatus
to claim
is

other of the wherein
the co

The
means
vide

according wait wait to period

keeping

the

first

value

constant

until

for providing five

configured

to proin-

penetration

rate

nnnhnizrd

for

second

pa

second

rameter being

cremental tars

each of

the

two

drilling

parame-

The
apparatus 6$ waiting

apparatus further

according

to

claim
for

wherein autnn1atlly

means

The
means
for

apparatus applying
is

according the

to

claIm

in

the to

given
in

between
cat

incremental to

one or of

changes

the

the

two

drilling

parameters
incremental drilling

the parameters the value

configured

do

so

independently held

commencing
change
in

yet another permit

automatic of

of

the oQier

parameter

being

constant

order

to

WS

0001267

Case 1:03-cv-02579-RPM

Document 141-2

Filed 01/11/2007

Page 12 of 12

4165789
13
system sian

14
to preclude penetration of nonlinear

and

procedure the calculation occur as

in

ia0rate

siding the change preventing

last

parameter
is

incremental than drill to claim

change
preset

when the
value

within

of
result

of

torque

greater to the

instabilities

which

process

damage
apparatus

dynamics

It
apparatus according waiting five
to

accotding overrides

17 wherein parameter
is

13
anemia configured

claim given

12

wherein

said
is

torque

reading

means when

last

in-

far automatically to provide

time

creenental than

change
pslfsec

change

torque

greater

second to either

be-

tween two
14

successive

incremental

of

the

The mans
10 the

apparatus

according

to claim

wherein of the deadthe

drilling

rametSs
according the to claim the to

The

fbi calculating includes
Insensitivity

ate otpenetration

apparatus

mesas
for

for

means
the the

for applying
is

incremental to

changes
an held

one of of

providing of

parameters value

do

hand
tratson

area of sate
is

calculation additional

pan-

independently constant

of

which

the

liecludes yalues

incremental

parameter

being

aprat
mare
both
well for applying
is in

agxvrAingto
incremental to the
in

-Whkh

anges
ties

parameter

due

to

minor

coot

result

nonlinear

roce
the

parameters
as decreases

provide the parameter

as being

of

dynamics ordaining 20 The apparatus means
for applying thrust

according incremental values

to claIm

wherein
is

changed

changes

36
sienna each ucs

apparatus for applying

according incremental

to claim changes increase

13
in

the 30 input ceases

to and

change

In increments

100
in

parameter

values

50

psi

parameter
until

is

cpative
for

to rate

such

vslto

RPM
21 means
the

the the

calculated anemia

of
incremental

The
for

apparatus

according the
drill

to claim

11

increase than hold

changes
25

until

operative

to decrease
until at

such

value rate

constant
stabilizes

the parameter iralneor the maximum Ia.laInI
relative

collared operations

does

so

automatically

any 11

manual

penetration

maxiabuni the drill

tIm

two parameter values being input .17 to according apparatus
apparatus further includes

22 The apparatus according maui for progressing the
the Into
drill

to claim

in

whIch
until iptst

the result

claim

11

wherein

the

collared

does

so

manual

means

periodically

read

said apparatus

ingtorquepressuretothedrlllandautomaticallyover.30

.35

50

55

WS

0001268