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ContactFor further information, please contact:[email protected] visit:www.exprogroup.com/dst-tcp
DST/TCP
/ Expro Excellence
Expro uses a ‘shoot and drop’ TCPsystem to complete an offshoreproduction well in India
DST/TCP
Expro Exce l lence exprogroup.com
Servicing the largestoffshore DST/TCPexploration contractglobally, since 2016Expro has successfullycompleted over 150consecutive TCP jobswith 0 failures,0 NPT, and 0 LTI’s. ’’Reduction of rig time
Objectives/background
• Expro has over two years TCP/DSTproven success with a National OilCompany (NOC) client. Under thiscontract, they wanted to perforate theproduction zone using TCP instead ofconventional wireline perforation, due touncertainty in formation pressure causedby suspected reservoircompartmentalisation
• Sub-hydrostatic reservoir pressure bringsanother challenge for well completionbecause of post perforation losses untilwell activation starts using Gas Lift Valves(GLV)
• The high angle deviation in the well wasthought to limit perforating options
Expro Excellence
• Unlike conventional completion methodswhere perforating is done before loweringthe completion string; hence exposingthe formation to damaging fluids forseveral days. Expro’s ‘shoot and drop’method run with the completion using an
auto-gun release allowed the well to beproduced directly after perforating
• Expro perforated the well using hydraulic delay firing head with a pyrotechnic time delay fuse and immediately the gas was injected in the annulus to activate GLVs resulting in 100% oil within 8 hours of activation, as compared to ~2 days using a ’shoot and pull’ method
• The gun slide critical angle was studied and it was observed that the well angle was conducive to deploying a 'shoot and drop' TCP system
Value to client• The use of the TCP ‘shoot and drop’method saved approximately four days ofrig time compared to using aconventional ‘shoot and pull’ technique
• By using TCP the client gained four daysof additional production
• With less exposure time, fluid losssignificantly reduced post-perforation;hence associated formation damage waseliminated
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