Replacing Gas_lift Valve

33r d Gas-Lif s-Liftt Wor Works ksho hop p Houston, Texas, USA Febr bruary uary 1 - 5, 2010

deviated wells with Wireline Tractor Technolo Espen Osaland, Aker Well Services .

,

This presentation is the property of the author(s) and his/her/their company(ies). It may not be used for any purpose other than viewing by Workshop attendees without the expressed written permission of the author(s).

 A en end da

•

Case Ca se Hist Histor ory y

•

Test Te st Hist istory ory

•  A  Ac c c es ess s o r y Equ Eq u i p m en entt

•

Conclusion

•

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Statoil Wells in 1996 •

Vertical depth vs. hor izontal reach of Statoil wells in 1996 0 500 1000

(meters RKB)

2000 2500 3000 0

2000

4000

6000

8000

Horizontal reach (meters)

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Snubbing, coiled tubing and WL tractor operations on Statoil operated fields

140 120   r   a 100   e    Y   e   p   s   n   o    i    t   a   r   e   p    O

80 60 40 20 0

Snubbing

CT

Tractor

LWI

* Images and text courtesy of Statoil

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Intervention Services Tractor run s by service in 2007 88

Perfo Guns

53

Set Plug

48

Gauge

USIT/CBL

5

Other 

62

Source: Statoil

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Intervention Methods •

The Wireline tractor system is designed for conveyance of Wireline logging and intervention equipment, into horizontal or highly deviated wells  –

PowerTrac® Advance™ 318

Electronics

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Motor and Pump

Drive Sections

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Compensator  

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Intervention Methods •

The Stroker tool is design to perform heavy duty push/pull operation down hole  –

PowerTrac® Stroker 318

Electronics

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Motor,Pump/Compensator

Anchor 

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Stroke Unit

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PowerTrac Control Panel Laptop view

Stroker push GLV into pocket

Surface control system Mouse click to operate and control Tractor / Stroker 

Stroker position indicator  Start/stop tractor 

Start/stop stroker 

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Experience Before KOT Modification •

Norne field /Statoil  –

Well G-01, replace worn out GLV in SPM @ 2635 MD • MD: 2635 meter, 2677 meter, Deg: 66°, 68° • 4 run • Problem latching GLV  – Problem could be related to s rin force in KOT arm

 –

Well G-04, replace GLV in SPM @ 2454 MD • MD: 2409 meter, 2454 meter, Deg: 64°, 65° • 2 run • Operation was performed successfully

 –

Well J-02, replace GLV in SPM @ 2758 MD • MD: 2715 meter, 2758 meter, Deg: 59°, 59° • 2 run • Operation was performed successfully SPM @ 2635 MD

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GLV Chan e Out Challen es •

Challenges before Kick Over Tool (KOT) modification • Ex erienced dama e on GLV ackin stack on standard Slick line o erations • Packing damage due to shear pin in KOT knee link • Negative angle on KOT arm, not enough spring force

•

After Kick Over Tool modification • Improved KOT arm force with link arm system • Improved tool orientation • Improved GLV installation line up, no bending to install

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Test Histor  •

November 2007, test of Modification Kit  –

Sco e • Improve spring force on arm (AWS Patent Technology) • Remove shear pin in knee link • Adjust arm angle

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Test Histor  •

April 2008, verification test in SPM  –

Sco e • Perform 15 setting/pulling sequences • Perform pressure test between every 5th sequence • Inspect pocket for damage

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Stroker / Kick Over Tool •

Benefit using Stroker tool to replace Gas-Lift Valves  –

Wireline Tractor drives GLV into SPM ocket

 –

Stroker pushes GLV into locked position, no jarring applied

 –

Surface readout • Position control • Current increase when GLV lands in No-go

 –

Stroker shears off running tool

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 Accessor E ui ment •

PowerTrac® Orientation sub

( AWS Patent Technology)

 –

Saves tool s ace when runnin tractor throu h side ockets. Wireline Tractor in Tandem not required)

 –

Orientation of Wireline Tractor in Side Pockets

 –

Finger collapse while POOH

 –

Easy connection and setup

 –

Failsafe

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Orientation finger 

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 Accessor E ui ment •

PowerTrac® String Shot sub  –

(Patent Pending)

Scale removal around valve lock in SPM • Orientation of detonating cord

String shot sub with primer cord

”

r ng s o su Orientation sub

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Strin Shot Sub Test GLV pocket filled with concrete to simulate scale

Scale build up around GLV lock

GLV pocket after orientated String shot detonation

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Conclusions •

GLV change out with Wireline Tractor and Stroker is field proven

•

Stroker technology is a more controlled way of setting/pulling GLV without the need of mechanical jarring

•

KOT modification kit lead to an accurate displacement of KOT arm

•

KOT modification kit has been field proven with standard slick line operation

•

Wireline Tractor / Stroker technology makes it possible to install SPM in highly ev a e we s

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Stroker / KOT Animation

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Questions

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Co

ri ht

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.

 –  Place it on th e www.alrdc.com web site, with access to the site to be as directed by the Workshop Steering Committee.  –  Steering Committee.

Other uses of th is presentation are prohibited without the expressed wr itten ermission of the com an ies and/or author s who own it and the Workshop Steering Committee.

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Disclaimer  The foll owin g dis claimer shall be inclu ded as the last page of a Technical Presentation o r Contin uing Education Course. A simi lar disclaimer is incl uded on the front page of the Gas-Lift Worksho p Web Site. The Arti fici al Lift Research and Development Counc il and it s off icers and tru stees, and the Gas-Lift Worksho p Steering Commit tee members, and their su ppo rtin g organizations and comp anies (here-inafter referred to as the Spon sori ng Organizations), and th e autho r(s) of this Technical Presentation o r  Continu ing Education Training Cour se and their com pany(ies), pro vide this pr esentation and/or  training material at the Gas-Lift Workshop " as is" without any warranty of any kind, express or  , (in so far as such warranties may be exclu ded under any r elevant law) and th ese members and th eir  companies will not be liable for unlawful actions and any losses or damage that may result from use of any presentation as a consequence of any inaccu racies in, or any omis sion fr om, the informatio n whic h therein may be cont ained. , , thos e of the autho r and not necessarily those of the Sponsor ing Organization s. The author is solely responsible for the content of the materials. The Sponsor ing Organizations cannot and do no t warrant the accur acy of these docu ments beyond the sour ce doc uments, althou gh we do make every attempt to work from authorit ative sou rces. The . Sponsor ing Organization s make no representations or warranties, express or imp lied, with respect to the presentations and/or trainin g materials, or any part th ereof, incl udi ng any warrantees of tit le, non infring ement of cop yright or patent right s of others, merchantability, or fitn ess or suitability for any purpose.

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