04 circulating well control methods_1

7/21/2019 04 Circulating Well Control Methods_1

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Circulating Well Control Methods1

Circulating Well ControlCirculating Well Control

MethodsMethods

ExxonMobil Development Company

Norman Archibald

International Drilling Schools




Circulating the Kic Circulating the Kic

Goal is to safely remove the influxGoal is to safely remove the influx Problem is that gas can expandProblem is that gas can expand

– follows “Gas Law”follows “Gas Law”

– expansion must be controlledexpansion must be controlled Control achieved byControl achieved by

– circulating through choke atcirculating through choke atlow pump ratelow pump rate

– use drill pipe pressure gaugeuse drill pipe pressure gauge

to:to: keep !P constantkeep !P constant

manipulate choke as necessarymanipulate choke as necessary

Cameron !ydraulic ChokeCameron !ydraulic Choke




Drilling Choe Control !anelDrilling Choe Control !anel

““"he Control #tation”"he Control #tation”

during kick circulationduring kick circulation

$perator must know:$perator must know: – casing surface presscasing surface press

– drill pipe pressuredrill pipe pressure

–

choke positionchoke position – mud pump ratemud pump rate

– volume pumpedvolume pumped




!lanning the Circulation!lanning the Circulation

Complete a “%ill #heet”Complete a “%ill #heet”

Pick a kill methodPick a kill method – &riller's method&riller's method

– (ait ) (eight method(ait ) (eight method

*ssign responsibilities*ssign responsibilities

– pump controller pump controller

– choke operator choke operator

"raditional"raditional Paper %ill #heetPaper %ill #heet

(+LL EPMI #1 &*"+

",-+

./ P," G*,0 15 L# 0.00 .1/ -( $P",$0 surf press of weakest &! failure mode

2/ &P P3+## 175 P#, 4*5 C*#,0G 2195 P#,

45 6$3-*",$0 662 P#,

7/ *008L8# P3/ 300 P#, 4C5 6$3-/ ) %,LL (" 162 P#,

0

9/ -8& (" -8& (" C!$,C+#

$8"#,&+ C#G 9.0 PPG

,0#,&+ C#G 9.6 PPG ./ $3,G0*L 9.6 PPG

.;/ %,LL (" 4*L*0C+5 10.3 PPG

1/ L*#" C#G .</ %,LL (" 4$=+3*L*0C+5 11.1 PPG

10.75 $& $=+3*L*0C+ P3+## 200 P#,

40.50 >?6" 0.00 .@/ C*P*C,",+# ,0#,&+

K55 G3/ 0.00 L?6" 6" L# #"3$%+#

2600 6"/ 0 4*5 &/C/ 0.0079 180 1.4 13

3130 83#" P#, 0 0.0087 500 4.4 39

45 &/P/ 0.0175 4 120 72.3 640

/ C#G #+*" 2600 6" -& 0.0000 0 0.0 0

2600 6" "=&

2A/ "$"*L &# =$L 78.1 692

;/ P," "+#" +B8,= 14.50 PPG

2./ C*P*C,",+# *00

</ &3,LL P,P+ "& to $P L?6" 6" L# #"3$%+#

5.07 $& 0.00 4*5 &/C/ 0.0326 180 5.9 52

19.50 >?6" 0.00 0.0698 500 34.9 309

XH " 0.00 45 &/P/ 0.06 98 412 0 2 87 .4 254 6

4120 6" 0 0.0000 0 0.0 0

4.250 ,& 0.000 4C5 C/L/ 0.0000 0 0.0 0

@/ &3,LL C$LL*3# $P+0 !$L+

8.00 $& 5.07 4*5 &/C/ 0.0326 180 5.9 52

2.85 ,& 3.00 0.0698 500 34.9 309

180 6" 500 45 &/P/ 0.0698 1520 106.0 939

0.0000 0 0.0 0

.A/ "$"*L &+P"!

4800 6" -& 4800 6" "=& 22/ "$"*L *00 =$L 328 2907

27/ "$"*L &# =$L 78 692

../ ," !$L+ *0GL+ 29/ "$"*L &# ) *00 =$L 406 3599

9.88 D $& 0 &+G 21/ *C",=+ #836*C+ =$L *0& 3,#+3 800 L

2/ "$"*L *C",=+ =$L8-+ 1206 L

.2/ P8-P 2;/ *3,"+ 6*C"$3 *LE$/*L 0 .4 1 0.4 9 #F?L

11.00 D#"3$%+ 0.1129 L#?#"3 2</ *3,"+ 3+B8,3+& *LE$/*L 499 590 #F

3 "P+ 42or75 6.50 DL,0+3# =$L/ ,0C3+*#+ *LE$/*L 33 39 L

0.0000 3$& #,H+ 6$3 &8PL+F 2@/ ,0,",*L &P C,3C/ P3+##

290 P#, I 20 #P- ) 2.26 P-

.7/ ,06L8F !" 311 6" "=& 7A/ ,0,",*L 63,C P3+## 115 P#,

311 6" L$0G 7./ 6,0*L C,3C P3+## *L?$/*L 124 133 P#,

.9/ ,06L8F G3*&,*0" 0.095 P#,?6"

3%

Choke line ,& D

(+LL %,LL ($3%#!++"


http://slidepdf.com/reader/full/04-circulating-well-control-methods1 5/10Circulating Well Control Methods5

Kill SheetKill Sheet

0ew +-&C %ill #heet J =ersion 2/A0ew +-&C %ill #heet J =ersion 2/A

$rganiKed guide to plan a kick circulation$rganiKed guide to plan a kick circulation

!elps with decision making!elps with decision making

– circulation methodcirculation method – establish “drill pipe pressure reduction” scheduleestablish “drill pipe pressure reduction” schedule

for “wait and weight” methodfor “wait and weight” method

Partially filled out inJadvancePartially filled out inJadvance

&aily updates&aily updates %,% can be utiliKed for additional data%,% can be utiliKed for additional data



1.1. (ait ) (eight -ethod(ait ) (eight -ethod

$ne circulation:

(ait until kill fluid is ready then circulate kill fluid down

the drill pipe while kick is circulated up casing annulus/

2.2. &rillers -ethod&rillers -ethod

"wo circulations:

a/ 8sing original fluid in well and pit J circulate out kick/

b/ &isplace original fluid in well with kill fluid/

3.3. Concurrent -ethodConcurrent -ethod

-ix ) CirculateM#everal circulations J increasing fluid weight in stages until

well is killed/

Circulating Well Control MethodsCirculating Well Control Methods



Wait " Weight # $sing MW toWait " Weight # $sing MW to

%alance &ormation !ressure%alance &ormation !ressure 3esults in lowest possible casing seat pressure if3esults in lowest possible casing seat pressure if

uncased hole annular volume is greater than the drilluncased hole annular volume is greater than the drillstring volumestring volume

%eeps !P constant at all times%eeps !P constant at all times – reNuires adOustment to drill pipe pressure as heavier killreNuires adOustment to drill pipe pressure as heavier kill

mud fills the drill stringmud fills the drill string

%ick migration can occur during preparation%ick migration can occur during preparation

3eNuires an additional circulation of the well to3eNuires an additional circulation of the well todisplace balancedJweight mud with the desireddisplace balancedJweight mud with the desiredoverbalance for drilling ahead or trip marginoverbalance for drilling ahead or trip margin



ICP FCP FCP

4&P54&P5&rill Pipe&rill Pipe CasingCasing CasingCasing

4&P54&P5&rill Pipe&rill Pipe

4&P54&P5&rill Pipe&rill Pipe CasingCasing

FCP Constant

F

ICP

Strokes

D r i l l P i p e

P r e s s u r e

StrokesDrill PipePressure

0 ICP

Drill PipeStrokes

FCP

Wait and Weight MethodWait and Weight Method



%ick above collars

%ill mud startsinto annulus

"op of kick I $P

%ick removed

C a s i n g P r e s s u r e

C a s i n g P r e s s u r e

#trokes or "ime#trokes or "ime

Sur'ace Casing !ressure pro'ile (hileSur'ace Casing !ressure pro'ile (hile

circulating out a )AS ic circulating out a )AS ic




Gas bubble reaches surface

3

e l a t i v e P i t = o l u m n

L ' s

3

e l a t i v e P i t = o l u m n

L ' s

L's PumpedL's PumpedFigure 5.4

3elative Pit =olume (hile Circulating $ut * Gas %ick3elative Pit =olume (hile Circulating $ut * Gas %ick

0 200 400 600 800 1000 1200

0

10

20

30

40

50

60

70

!it )ain # circulating out a *+ %bl, )AS ic !it )ain # circulating out a *+ %bl, )AS ic

04 circulating well control methods_1

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