Volume 48 Issue 1
Feb.  2020
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LIU Weirong, NI Huafeng, WANG Xuefeng, SHI Zhongyuan, TAN Xuebin, WANG Qingchen. Shale Oil Horizontal Drilling Technology with Super-Long Horizontal Laterals in the Longdong Region of the Changqing Oilfield[J]. Petroleum Drilling Techniques, 2020, 48(1): 9-14. DOI: 10.11911/syztjs.2020029
Citation: LIU Weirong, NI Huafeng, WANG Xuefeng, SHI Zhongyuan, TAN Xuebin, WANG Qingchen. Shale Oil Horizontal Drilling Technology with Super-Long Horizontal Laterals in the Longdong Region of the Changqing Oilfield[J]. Petroleum Drilling Techniques, 2020, 48(1): 9-14. DOI: 10.11911/syztjs.2020029
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Shale Oil Horizontal Drilling Technology with Super-Long Horizontal Laterals in the Longdong Region of the Changqing Oilfield

  • Changqing Drilling Corporation, CNPC Chuanqing Drilling Engineering Co. Ltd., Xi’an, Shaanxi, 710018, China

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  • Received Date: November 14, 2019
  • Revised Date: December 11, 2019
  • Available Online: January 02, 2020
    Graphical Abstract
    • Abstract

  • In order to solve technical problems such as the difficult control of well trajectory, low ROP, plugging difficulties in the horizontal section, sidewall instability and difficulties in running completion casing in super-long horizontal sections in shale oil in the Longdong region of the Changqing Oilfield, a shale oil horizontal drilling technology with super-long horizontal section has been formed by means of the optimization and controlling of well trajectory, the selection of rotary-steerable BHA, and the application of high-performance WBM and casing floatation running technology according to the characteristics of thief zone and leakoff rate as well as various plugging measures. This technology was successfully applied for drilling the horizontal Well H50-7 with super-long horizontal section of 4,088.00 m in Longdong Region of Changqing Oilfield, which indicated that the technology could solve the technical difficulties of horizontal wells with a super-long horizontal section, to provide technical support for shale oil development in this region

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