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Distinguished Lecturer - Transforming How to Evaluate Wells and Unlock Reserves: Deep Transient Test

Society of Petroleum Engineers Distinguished Lecturer Transforming How to Evaluate Wells and Unlock Reserves: Deep Transient Testing François-Xavier Dubost SLB 18:00 06 October 2023 BELGO, 159A Nguyen Van Thu, Q1 Abstract: Dynamic data, acquired using wireline formation testing or well testing techniques, are used by operators to address uncertainties associated with reserve estimates and productivity, while rationalizing field development and production costs. However, these evaluation techniques provide dynamic data at different length scales, and with different environmental footprint, cost, and operational constraints. To help reduce development risks, a Deep Transient Testing (DTT) technique was developed in response to an industry and customer need in 2015 and has been used since then by many oil companies. The method is a hybrid technique between wireline formation testing and Drill Stem Testing (DST) designed to meet local regulatory requirements to unlock reserves. It is based on innovations with higher resolution measurements, pumping of large fluid volumes on wireline at higher rates, extending testing time and circulating the produced fluids out of the well for safety and well control, without the requirement for surface flaring. These features enable dynamic reservoir characterization in thicker formations, higher permeabilities and with much deeper volume of investigation than previously available. Pressure transient testing and sampling results from DTT technique is now becoming an important component in operating companies’ reservoir evaluation programs. The DTT technique is embedded in a digital framework to provide early reservoir fluids models and reservoir insights coupled to geological models, so that well deliverability and prospect commerciality can be evaluated. DTT also aligns with global sustainable development goals, by enabling reductions in CO2 emissions by up to 96% percent, and offering high operational efficiency compared with other wireline formation testing systems to significantly reduce energy consumption. Biography: Francois-Xavier Dubost focused for 27 years on reservoir performance evaluation and recently joined the SLB HQ team as Reservoir Technical Director. Graduated from Herriot Watt University with an MSc in Reservoir Evaluation and Management, Francois has been looking at all angles of reservoir engineering topics from acquisition to interpretation and incorporation of the measurements into field models. He recently dedicated his interests in the field of Deep Transient Testing, introducing this topic to the industry with the first published papers, presenting it in different expert meetings and lectures, and acting as a leader internationally to develop this new technique. Francois co-authored over 30 publications and filed over 10 patents predominantly on Formation Testing & Sampling #DistinguishedLecturer #ReservoirDescriptionandDynamics

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Tech Talk: Retrofit Thru-tubing Deep Gas Lift - A Case Study from Brunei

Retrofit Thru-tubing Deep Gas Lift - A Case Study from Brunei Scott Gutleber & Threedhases Jiamjarasrungsi Weatherford 02 November 2023 BELGO - Q1 HCMC Abstract Scott and Nat will present a case study for a shut-in offshore oil producer in Brunei with multiple tubing leaks. An innovative thru-tubing retrofit gas lift system was installed, isolating the leaks and allowing for lift gas injection below the production packer. The gas lift valve was placed 200 m TVD deeper than the lowermost side pocket mandrel, enabling production from a deeper depth than would be possible using conventional gas lift. Within four hours of starting lift gas injection, the well was flowing steadily with 900 kPa of FWHP. This cost-effective approach helped the operator avoid an expensive workover and maximize production potential. Biographies Threedhases Jiamjarasrungsi (Nat) is Operations Manager at Weatherford with over 12 years of experience in artificial lift and production solutions in Thailand, Myanmar, and Vietnam. He holds a Bachelor degree in Mechanical Engineering and began his career as an artificial lift engineer. Over the years, he has held a variety of roles in artificial lift, production chemicals, procurement, and digital solutions. He also served as a Board of Director for the SPE Thailand Chapter. Scott Gutleber is a Technical Sales Engineer from Weatherford with 14 years of experience in rigless well intervention. He holds a Bachelors degree in Materials Science Engineering and a Bachelors degree in Finance from the University of Pennsylvania. Scott is currently based in Bangkok, having completed assignments in Asia, the Middle East, West Africa, and the North Sea. Agenda 18:00 - 18:30 - Welcome Drinks and Food 18:30 - 19:30 - Presentation, Q&A 19:30+ - Networking Registration: Free entry for all participants This is a face-to-face session only Contact Robert Fargo on +84903689948 or robert.fargo@harbourenergy.com Have you registered for SPE membership or sponsorship? SPE members enjoy distinct access to a vast collection of resources, programs and services in conjunction with building a recognized community and having each member’s voice heard.For more information, please log on to https://www.spe.org/en/members/ Join now. Get involved locally.

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