well interventions examples1

8/12/2019 Well Interventions Examples1

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WELL INTERVENTION'.*, *r- ,, "r,*r",r, ,**rllT )lll'1 What is ttre primary pA. To support tubing weight.B. To retain the completion fluid in the annulus.

r' C. To enable the completion annulus to be isolated. tadj t..,py' rc


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WELL INTERVENTIONExamples 1.&)fA "r pF.",.t.4 l-a pun Nau, t-Art,,What is the definition of q perllanent'packer?A. lt can be set and retrieved on Wireline.B. lt can only be retrieved with a special pulling tool.J C. lt can only be retrieved by milling il out. gui, S 't'P /*'/i ID. lt is fixed to, and can only be retrieved on the completion tubing.E. lt is fixed to the completion tubing.l\W 7e f Ft*le,,A ,


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WELL INTERVENTIONExamples 1.,A.1,, :C /,, kof'/.rt / etl9,/.r.).., /..r?/ /_/?.x, 5 RJ? tftu12 lf a side pocket mandrel is not in use, what type of valve is installed in the pocket as apositive closure to flow from either direction?A. A circulation valve./ B. A dummy valve. '.i: ) dl AC. A gas lift valve.

D. A chemical injection valve.tL,,"F Jrt,> N tttAc/2 /?tz


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WELL INTERVENTIONExamples 1 .411 o g r2 r^P.E\ )/( 5:/C 0-.4 7// l/t rQ,/,.4:'.17 Why is an annulus safety valve installed?A. ln place of a tubing safety valve.B. To close off flow into the annulus.{ C. n gas lift installations, to prevent back flow from the gas filled annulus.eAko v s/'u-,.-\ v C|i 72,t7 kar. J:.A J}'pa/ F+ltut{7 Pp, atrr'J?elo?t /a "*?/.-a 24 ea Fa:7 . ,_tq.t a --tau. ur;N u rzu?/18 What is the primary reason that determines the setting depth of a down hole safetyvalve?A. Prevent deliberate sabotage.B. Prevent accidental penetration by drilling tools from ah adjacent well.C. As close as possible to the packer to keep well pressure as deep as possibleD. Below cratering depth in case of a potential blow out around the casing.E. As high as possible to reduce the inventory of well fluids whlch may escape above

the valve.\ F. Below any possible depth where damage could occur to the valve from surfaceimpact Of explosi,n. BfiD a)tEi. (rg a,l Dy',t\it D;1,rt 6 ^J ,t:.r,r.d..,:- 4 ID1;-..0.*P ,L&? >p.t4y( t4 -lU tiili.Pc rvt tz.6trU, ,* B, ,i[r.t? PU*.OO'19 From which direction are down hole safety valves designed to prevent flow?A. Above.

V B. Below eta ? u".;,C. Both above and below. \, CS,A ?e It C Iga., .fm rcn. .Srtel?rt>u eparoin';.A?,,, "ru aer.r.:ue*,20 Do down hole safety valves prevent flow in both directions when closed?A. YESB. NO21 What is the first action to take to re-instate production in a well with a failed tubingretrievable down hole safety valve?ll A. Lockthe valve mechanism open andB. Perform a workover-

C. Lock the valve mechanism open.llla pt\ t,1?. t.\,. ,..,?. L,rir ,, -fc 4?.1r1 v ,\r,,o|rr'ta/i ialr: i;,22 How is a tubing rg 4"r9 g down hole safety valve run into the weil in the openposition?

TWOANSWERSA. By installing a straddle set across the valve mechanism . crt /ubtp nA LFpl e1,apet.*tB. By utilising a lock open mechanism.C. By pumping up above the valve to equalise the pressure differential.D. By applying pressure to the control line. pc,7, kt t+,u,attnos 4r,,,r,

inStall a wireline insert valve. ,t.- g,,s [nro", , uh, }J /L. - _


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WELL INTERVENTIONExamples'1.r)C. L


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WELL INTERVENTIONExamples 1.

28 How are sub-surface conkolled down hole safety valves operated?TWOANSWERS.A. By a rise in the temperature of the well bore fluid.

1'l B. By differential pressure. DtFen/aRLt/t rR/rC. By hydraulic pressure.

, D. By a fall in the temperature on the well bore fluid..l E. By ambient pressure. iitJerrir p, pr? / fllA tL)?/ SUW/cVtutt Nt TA '

TWOANSWERS.A. Coiled tubing retrievable.B. Tubing retrievable TW rK ,. r"" s*2cap.rr 4cer4C. Wireline retrievable Attz ,nt4 ?.-tc, k


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WELL INTERVENTIONExamples L32 Which type of closure mechanism is fitted to surface controlled wireline retrievabledown hole safety valves?

TWOANSWERS.A. Gate.', B. Flapper R/&rPaC. Plug.,] o. eatt. tr:.ur33 Which type of closure mechanism is fitted to tubing retrievable down hole safety valves?

TWOANSWERS.r A. Ball.. B. Plug.I C. FlapperD. Gate.- - - aost 7-rr c/a vrt l/l1vct ?\\-cs tt. Q7ot. 1Lg,\tlql34 Which type of down hole safety valve has the largest inside diameter for the samecompletion tubing size?

'I A. Tubing retrievable.B. Pressuredifferential.C. Ambient.D. Wireline retrievable.

35 What is the main reason for using tubing nipples in a completion?A. To reduce well flow.B. For depth control of Wireline.\ C. to receive flow control devices. iap pr-.?ee wi,ti$ .zs [c*t.i r.i L)

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36 How are lock mandrels locked into tubing nipples?A. With elastomeric packings in a polished nipple bore.B. With expanding rubber elements in the nipple bore.C. With slips.\ D. With mandrel locking dogs and matching nipple recesses.'i.1. I o :C e t I \fr ?,4?rt/N ,: 5l: -1637 How do flow control devices seal within the nipple bore?A. With expanding rubber elements in the nipple bore.B. With elastomeric packings in a polished nipple bore. )4'e'"4'ro "'f t(r"+)r:'C. By metal to metal seals.D. With mandrel locking dogs and matching nipple recesses.


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WELL INTERVENTIONExamples 1.rPP r,a,l/l f \ ,katp:rn>".1 -


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WELL INTERVENTIONExamples 1.(l'r( r r;43 What are the main purposes of blowout'preventers?TWOANSWERS

To operate safely and to contain the well pressure.To provide better protection than a stuffing box.To clean the wire when pulling out of hole.To enable the repair of any connection above the BOPs that might start to leak.

44 What are some of the advantages of setting a wireline BOP directly on top of a Xmastree?TWOANSWERS.JA. Access to the wireline BOP. r-iii' r-,r'ir'r,./B. Less potential leak paths between barriers. Mi L r ' ,( oa\u c r'\rtr(1A laHeDu


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WELL INTERVENTIONExamples 1.},L[:t = E \tT. fr-N u\L{1 r. \D? ? rc \

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48 A slick line operation has got into difficulty (tool string and wire lost down hole) and it willbe necessary to do a fishing job. lt has been decided to use the braided line fishing winch,which is on location at the time, to do the fishing.Which of the following statements are true?TWOANSWERS.

It will be necessary to rig up both slick line and braided line BOPs before fishing theslick line wire with the braided line. \oir 5';' tt 1ve r,. 'ie" ai\ UpIefcNt/ \ 5rvrtrcvIt will be necessary to kill the well before starting fishing with the braided line.The slick line BOP must be redressed with a single braided line ram assembly beforestarting fishing with the braided line.The lubricator must be changed out for one of a higher pressure rating before startingfishing with the braided line.It may be necessary to pick up extra lubricator before fishing the slick line tool stringwith the braided line. Uq7r1. UE.or v{.\tt . 11R\.. s$$r". a.s06 TL*rle +LNiA'

:ltrey -ln which situation would a wireline BOP be used?A. To catch tools if the wire breaks.

B. To install a wireline tool.C. To clean the wire when pulling out of the hole.D. To checUrepair the packing in the stuffing box. 9f

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well interventions examples1

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