Drill String-ONGC GTs-June 2014.ppt

7/18/2019 Drill String-ONGC GTs-June 2014.ppt

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DRILL STRINGDRILL STRING

Drill Pipe

Bottom Hole

Assembly:Drill CollarHeavy Wt. Drill PipeStabilizerAuxiliary Tools -

Drilling ar! "WD

#elly $ Top Drive


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DRILL

STRINGCOMPONENTS


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DRILL PIPE


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DRILL PIPE


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Drill Pipes: Lengths

Ranges Length Remarks

Range-1 5.50 6.70 m(18 22 feet

!"s#lete(Rarel$ %se&

Range-2 8.50 '.20 m

(27 0 feet

)#mm#nl$%se&

Range- 11.61.7 m

(8 *5 feet

Less %se&

5


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DRILL PIPE


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Drill Pipe + ,##l #int )lassifiati#n: )#l#r /an&

)#&e

, + DP )lassifiati#n # + )#l#r #f "an&s

)lass !ne hite "an&

Premi%m lass ,# hite

)lass !ne $ell#

)lass !ne #range

3rap !ne re&7


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Drill Pipe ,##l #ints

4 180taper #n "# en& sh#%l&er 3# &%e t# this small angle "# en& is l#nger

hile r%nning in pipe an get hel& %p. 3# this

180

taper helps in a#i&ing pipe getting hel&%p &%ring R9.

4 50taper #n pin en& sh#%l&er

3# &%e t# higher angle pin en& is smaller hile P!!9 this 50taper helps in a#i&ing

&rag.

t makes staking #f DP stan&s easier9


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Tool Joint

%Equivalent Connections

&C '( '-)$*+ ,

&C ) '-/$*+ ,

&C )* )-$'+ , &C 01 0+ H

&C0( 0+ ,

&C 21 0-$'+ ,

10


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A

PI

SP

ECIFI

CATION

TOOL JOINT

11


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A

PI

SP

ECIFI

CATION

TOOL JOINT

12


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A

PI

SP

ECIFI

CATION

Tool Joint

%Tool Joint Markings 3Base o4

t5e Pin677 3T manu4a8turer. symbol69

( 3Wel "ont569

/1 3Wel ;ear69

& 3Pipe manu4a8turer. symbol69< 3=rae6

Example: ZZ 6 70 N E


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4 ,R;L


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15


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>inim%m ?iel& 3trength

4 s the f#re nee&e& t# streth #r #mpressthe &rill pipe %ntil it is permanentl$ &ist#rte&.

@ra&e >in ?iel&3trength psi

# #f gr##es

75000 il

@ 105000 ,#

3 15000 ,hree

16

>i i , il 3t th


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>inim%m ,ensile 3trength4 s the f#re neessar$ t# p%ll the

&rill pipe apart %ntil it "reaks #r

snaps.

4 5A 1'.5 ppf

)lass- gra&e : 17' ,

)lass- @ @ra&e- 251 , )lass- 3 @ra&e- 22 ,

Premi%m gra&e : 1*2 ,

Premi%m @ @ra&e- 1'8 ,

Premi%m 3 @ra&e- 225 ,

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,#rsi#nal ?iel& 3trength

4 ,#rsi#nal $iel& strength #f &rill pipe is the

am#%nt #f tisting f#re a pipe an

ithstan& "ef#re tisting #ff.

4 #rmall$ t#rsi#nal $iel& strength #f pipe

"#&$ is %s%all$ less than that #f t##l B#int.

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/%rst 3trength

4 /%rst strength

#f &rill pipe is

internal

press%re thatan a%se a

pipe t# "%rst #r

spring a leak.

19


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)#llapse 3trength

4 )#llapse

strength #f &rill

pipe is the

am#%nt #feternal f#re

nee&e& t# r%sh

the si&es #f &rillpipe %ntil it aes

in #mpletel$.

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Drill Collar: Functions

% ,mpart >eig5t on bit 3W?B6% Prevent rill pipes 4rom bu8@ling by retaining t5e

neutral point >it5in itsel4% Provie sti44ness to t5e B.H.A. t5at is essential in

@eeping rilling trae8tory on 8ourse in bot5 verti8al

as >ell as ire8tional >ells

DRILL COLLAR


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A

PI

SP

ECIFI

CATION

DRILL COLLAR

Thick alle! pipe "or sti""ness an! concentration o" #$%

&i'e (iel! &t) Min Tensile st) Elongation

*+,-./ 6+7-./ 140,000 ,,01000 ,* 2

7/ ,,/ 135,000 ,001000 ,* 2

% &peci"ie! 34 $utsi!e 5iameter - nsi!e 5iameter ength o" a !rill collar single that is usuall4 *0 *, "t

% Connections: %ase! on %en!ing &trength 8atio 9%&83eteen 3ox an! pin

% &pecial "eatures such as spiral1 stress relie" groove pin etc

Example: 8 x 213!1" , "5!8 Re#, Sp$%al

DRILL COLLAR


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O

PTION

AL

FEAT&RE

S

DRILL COLLAR

SPIRAL

Di44erential stu8@ up 85an8es greatly

reu8e >5en spirals 8ut in t5eoutsie boy o4 rill 8ollars.

% Wall 8onta8t area is minimize t5ereby

8ausing reu8tion in i44erential 4or8es.

% A8ts as a 8onuit 4or spotting 4luis

meant 4or releasing t5e stu8@ pipe.

DRILL COLLAR


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SELECTI

ON

CR

ITERI

A

DRILL COLLAR

SI'E argest iameter maximum >all t5i8@ness t5at 8an

sa4ely be run in 5ole

e>er rill 8ollars reuire 4or applying >eig5t on bit.

esser 8onne8tions 5en8e less 8onne8tion 5anling

time.

"ore sti44ness to BHA >5i85 is essential to rill a >ell

ire8te 5ole.

esser bening stresses ue to reu8e annular

8learan8e

DRILL COLLAR


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SELECTI

ON

CR

ITERI

A

DRILL COLLAR

&ZE MT;T$N

Ability to 4is5:

Was5 over!


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SELECTI

ON

CR

ITERI

A

DRILL COLLAR

/EIGT

/ /O C*( x SF

W?BF "aximum anti8ipate >t. on bit 3lbs6

#b F Buoyan8y 4a8tor9 F Hole angle 4rom verti8al 3eg6

W F Air >t. o4 BHA 3lbs6

S..b F Sa4ety a8tor 4or bu8@ling F 1.*2 38ommon6

F 1.*1 3Har 4ormation6

DRILL COLLAR


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SE

LECTI

ON

CR

ITERI

A

DRILL COLLAR

T;een t>o se8tions not to ex8ee limit

or normal 8onition : > ?)?

or severe 8onition an 5ig5 4ailure rate: > *)?

9$5@+5@-$5%&8 A 9o!@+i!@-o!

C5ange-overs s5oul 5ave ienti8al ?D to t5at o4 BHA to

reu8e t5e transition e44e8t bet>een se8tions >5i85 a8ts

as stress 8on8entrators

DRILL COLLAR


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SE

LECTI

ON

CR

ITERI

A

DRILL COLLAR

Make Bp Torque

% ital "actor i" not "olloe! might lea! to rapi!

"atigue !amage D premature "ailure o" !rill collar

% C4clic loa!s o" tension D compression !uring !rilling

% " lesser make up torque is applie!1 it might lea! to

"atigue "ailure !ue to c4clic loa!ing D pressure

sealing "ailure


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DRLL PP );R

4 While transortin! " loa#in! /ef#re %nl#a&ing make s%re pin en& threa&

pr#tet#rs are fitte&

3tak pipe at least 1 #r 2 feet a"#e thegr#%n& t# a#i& m%& &irt an& ater

Plae at least s%pp#rts "eteen eah r#s

#f pipes t# a#i& "en&ing #f pipes

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DRLL PP );R

4 $ee ie in tension

;#i& r%nning DP &eli"eratel$ in #mpressi#n

as pipe ill fail easil$ "$ "%kling


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DRLL PP );R

4 A%oi# across cuts

on shoul#er (ace

,his ill &amage the

"# sh#%l&er

f there is ar#ss %t

#r &ent #n sh#%l&er

fae the seal is&amage& an& pipe

ill leak.

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DRLL PP );R

4 A%oi# circu)(erential scars )ir%mferential sars an make een a ne pipe

fail

,his ma$ "e a%se& "$ pipe t%rning in slips

&%ring pipe make %p #r "reak %p


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DRLL PP );R

4 Insection nspet pipes th#r#%ghl$ f#r pin an& "# en&

threa& &amages

nspet pipes f#r ir%mferential sars #n sliparea

nspet pipes f#r ar#ss %ts #n sh#%l&er fae

nspet pipes f#r r##ke&ness

nspet pipes f#r re&%ti#n in , !D

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DRLL PP ;L


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GALLED T+READS

40

+EA,- WEIG+T DRILL PIPE


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Reduces hook load allowing

smaller rigs drill deeper holes

Ease of handling saves trip time

Allows for gradual change in

stiffness

Reduces torque, possibilityof differential stuck up, vertical drag and

friction affecting directional control

4 5A 9DP 50 ppf A D !D at

entral %pset-5-1E2A ,ensile strength: 12 ,

+EA,- WEIG+T DRILL PIPE

$ELL-


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API

SP

ECIFICATION

$ELL-

&quare or hexagonal shape! steel pipe

connecting sivel to !rill string an! through

the rotar4 ta3le transmits torque to the !rill

string

% &peci"ie! 34:

&i'e 9;cross lats - ength

oer pin connection - Bpper %ox F

connection

T4pe 9&quare or Fexagonal

Example:51!4, 40 6-, NC 50 P$), "5!8 L

Re# *x, exa#*)al

$ELL-


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A

PI

SP

ECIFI

CATION

$ELL-

STA.ILI/ER


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FEAT&RE

S

S

Play importat role for maitaii! theplae" tra#e$tory% $our&e $orre$tio "uri!"rilli!

'ype% &i(e ) pla$emet a*e$t& "e&ire""ire$tio% re"u$e "o!le!& ) miimi(e

$ompli$atio&


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STA.ILI/ER


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+,-D,D -/D, preferaly for &oft a" me"ium

formatio&. epairale at el"i! &hop&

',/- -/D, har" to ery har" formatio&.

i!le pie$e hi!h &tre!th alloy &teel ith la"e

fa$e& impre!ate" ith tu!&te $ari"e i&ert&. ot

repairale :; a o"y a" a &leee. 'he &leee i& &hru?

@tte". la"e& har" fa$e" ith tu!&te $ari"e

i&ert&. +or out &leee& remoe" y $utti! a"aother &leee &hru? @tte"

',/D,D -,,, all ut the har"e&t formatio.

OeApie$e o"y a" repla$eale &$re o &leee ith

la"e&

FEAT&RE

S

STA.ILI/ER


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,P-/C,/-, +,/ P/D preferaly ear it

&taili(er for maitaii! hole !au!e i har" a"

ara&ie formatio&. +ear pa"& Bla"e& ea&ily

$ha!e" ithout opei! the &taili(er.

OAO'/' -,,, e*e$tie i har"

formatio& a& ha& ore hole all &upport to the&tatioary ruer &leee&. 'hat a$t& a& a "rill

u&hi! hile the &tri! rotate&. ;eep& hole !au!e

lo!er tha la"e &taili(er& a" "oe& ot "ama!e

the ore all. leee& are ea&ily $ha!eale ut

ha& temperature limitatio& B to 1200C a" a

&horter ear life i rou!h all&

FEAT&RE

S

Cro&& Oer&

C


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Cro&& Oer& 5 DP E 6A1F2 DC

5 DP E 8 DC

6A1F2 DC E 8 DC

9A1F2 DC E 8 DC

Cro&&oer&

5 DP E 6A1F2 DC

5 DP E 8 DC6A1F2 DC E 8 DC

9A1F2 DC E 8 DC

Cro&& Oer&


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Cro&& Oer&

Documents

Drill String-ONGC GTs-June 2014.ppt