Optimized Drilling and Completion Technology for Horizontal Wells in Tight Oil Reservoirs in the Jilin Oilfield

CUI Yueming; SHI Haimin; ZHANG Qing

doi:10.11911/syztjs.2020123

Volume 49 Issue 2

Apr. 2021

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Petroleum Drilling Techniques > 2021 > 49(2): 9-13. > DOI: 10.11911/syztjs.2020123

CUI Yueming, SHI Haimin, ZHANG Qing. Optimized Drilling and Completion Technology for Horizontal Wells in Tight Oil Reservoirs in the Jilin Oilfield[J]. Petroleum Drilling Techniques, 2021, 49(2): 9-13. DOI: 10.11911/syztjs.2020123

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Optimized Drilling and Completion Technology for Horizontal Wells in Tight Oil Reservoirs in the Jilin Oilfield

Drilling Technology Research Institute, PetroChina Jilin Oilfield Company, Songyuan, Jilin, 138000, China

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Received Date: June 18, 2020
Revised Date: September 29, 2020
Available Online: November 01, 2020

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In view of the problems of high cost, long drilling cycle, slow ROP, unstable borehole wall, high friction and torque, and difficult casing running in tight oil reservoirs of Jilin Oilfield, this paper studies the optimized drilling and completion technology for for horizontal wells with two-section casing program and long horizontal section. In order to reduce the cost and shorten the drilling cycle from the engineering design, the three-section casing program used in the early stage was simplified to a two-section one with shallow surface casing, and one section completion time was saved. At the same time, the technical measures such as optimal design of borehole trajectory, low-filtration strength suppression polymer drilling fluid system, near-bit geological guiding tool, customizing the PDC bit design, floating casing and cementing and so on were formed.The technical measures were applied in 180 horizontal wells in tight oil reservoirs of Jilin Oilfield, with an average well depth of 3449 m, an average horizontal length of 1189 m, a casing safety entry rate of 100%, a cementing qualified rate of 100%, increasing in reservoir drilling rate by 20.2 percentage point, shortening drilling cycle by 44.2% and reducing investment costs by 40.7%. The research results achieve the goal of low cost and high efficiency development of tight oil reservoirs in Jilin Oilfield, and can provide a reference for the development of unconventional reservoirs such as tight gas and shale oil.
- tight oil,
- horizontal well,
- optimizing drilling,
- completion,
- casing program,
- floating cementing,
- Jilin Oilfield

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Optimized Drilling and Completion Technology for Horizontal Wells in Tight Oil Reservoirs in the Jilin Oilfield

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