Expro Excellence Well Intervention… · 2016. 7. 19. · 1,536lb for conventional slickline. Well...
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Objectives • Marathon awarded Expro a contract to provide conveyance service for modular perforating operations with slickline on the Alba Field, off Equatorial Guinea • Some of the wells were 14,000ft deep and deviated, as well as underbalanced Expro Excellence • Expro’s team determined a new, larger gauge slickline wire would be required which would overcome the challenge of larger gun size and pulling wireline weights never previously attempted • The very first, production and operation of the largest gauge slickline with a diameter of 0.160” was invented and installed by Expro • Ran a number of 48ft, 3 3/8” perforating guns on slickline and stacked them in lengths exceeding 1,000ft • Firing head was run last on the top and the guns, detonated – the same slickline wire retrieved the firing head and guns before the guns deteriorated to a dangerous condition • Due to presence of CO 2 in the reservoir the wire had to be made of a particular alloy (GD 31MO) to reduce corrosion risk, however this created further challenges for the team • All equipment certified for zone 1 and 2, and work was carried out to UK North Sea standards • The entire operation was completed quickly - wells were perforated in underbalanced conditions Value to client • Innovative approach by Expro provided Marathon with a world-first solution • Saved Marathon time and money – much quicker than conventional braided line, as well as solving many of the well control issues braided wire might create • Guns run faster and using less equipment • Estimated savings of 25% in running costs compared to braided wire method Contact For further information, please contact: André Minnis Product Line Manager – Slickline Well Intervention [email protected] www.exprogroup.com/wellintervention Increasing the wire size created additional challenges for the Expro team: • Larger pulling weights increase forces through the stuffing box back bracket • Larger circumference wire required modifications for good well containment • Greater friction between the wire and packings became more intense • Rope socket technology had to be refined to stay with tried and tested conventional method • Increased well pressure effect on larger wire cross-sections increased size and weight of tool-strings • Increase equipment performance to meet larger slickline forces • Increased work hardening effects on wire increase minimum radius to 20” Expro collaborated with Marathon to ensure the wire was designed correctly and operated safely to support the specifications – with a typical breaking strain of 4,400lb, the new slickline had a safe working limit of 2,640lb pulling weight, compared with 1,536lb for conventional slickline. Well Intervention / Expro Excellence Expro’s world-first, large diameter slickline installation provides innovative solution that saves Marathon time and money Well Intervention Expro Excellence exprogroup.com
Transcript of Expro Excellence Well Intervention… · 2016. 7. 19. · 1,536lb for conventional slickline. Well...
Objectives
• Marathon awarded Expro a contract toprovide conveyance service for modularperforating operations with slickline on theAlba Field, off Equatorial Guinea
• Some of the wells were 14,000ft deep anddeviated, as well as underbalanced
Expro Excellence
• Expro’s team determined a new, largergauge slickline wire would be required whichwould overcome the challenge of larger gunsize and pulling wireline weights neverpreviously attempted
• The very first, production and operation ofthe largest gauge slickline with a diameter of0.160” was invented and installed by Expro
• Ran a number of 48ft, 3 3/8” perforatingguns on slickline and stacked them inlengths exceeding 1,000ft
• Firing head was run last on the top and theguns, detonated – the same slickline wireretrieved the firing head and guns before theguns deteriorated to a dangerous condition
• Due to presence of CO2 in the reservoir thewire had to be made of a particular alloy(GD 31MO) to reduce corrosion risk,however this created further challenges forthe team
• All equipment certified for zone 1 and 2,and work was carried out to UK North Seastandards
• The entire operation was completed quickly- wells were perforated in underbalancedconditions
Value to client• Innovative approach by Expro providedMarathon with a world-first solution
• Saved Marathon time and money – muchquicker than conventional braided line, aswell as solving many of the well controlissues braided wire might create
• Guns run faster and using less equipment
• Estimated savings of 25% in running costscompared to braided wire method
ContactFor further information, pleasecontact:
André MinnisProduct Line Manager – SlicklineWell Intervention
www.exprogroup.com/wellintervention
Increasing the wire size created additional challenges for the Expro team:
• Larger pulling weights increase forces through the stuffing box back bracket
• Larger circumference wire required modifications for good well containment
• Greater friction between the wire and packings became more intense
• Rope socket technology had to be refined to stay with tried and testedconventional method
• Increased well pressure effect on larger wire cross-sections increased size andweight of tool-strings
• Increase equipment performance to meet larger slickline forces
• Increased work hardening effects on wire increase minimum radius to 20”
Expro collaborated with Marathon to ensure the wire was designed correctly and operated safely to support the specifications – with a typical breaking strain of 4,400lb, the new slickline had a safe working limit of 2,640lb pulling weight, compared with 1,536lb for conventional slickline.
Well Intervention
/ Expro Excellence
Expro’s world-first, large diameter slicklineinstallation provides innovative solutionthat saves Marathon time and money
Well Intervention
Expro Exce l lence exprogroup.com
WI Marathon Slickline Case Study 01/04/2015 12:06 Page 1
