Gao Deli, Tan Chengjin, Dai Weifeng, Tang Haixiong, Wei Hongan. NUMERICAL ANALYSIS OF DOWNHOLE DRAG TORQUE AND ROTARY STEERING SYSTEM FOR LIUHUA MEGA-EXTENDED-REACH WELLS IN SOUTH CHINA SEA[J]. Oil Drilling & Production Technology, 2006, 28(1): 9-12. DOI: 10.3969/j.issn.1000-7393.2006.01.003
Citation: Gao Deli, Tan Chengjin, Dai Weifeng, Tang Haixiong, Wei Hongan. NUMERICAL ANALYSIS OF DOWNHOLE DRAG TORQUE AND ROTARY STEERING SYSTEM FOR LIUHUA MEGA-EXTENDED-REACH WELLS IN SOUTH CHINA SEA[J]. Oil Drilling & Production Technology, 2006, 28(1): 9-12. DOI: 10.3969/j.issn.1000-7393.2006.01.003
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NUMERICAL ANALYSIS OF DOWNHOLE DRAG TORQUE AND ROTARY STEERING SYSTEM FOR LIUHUA MEGA-EXTENDED-REACH WELLS IN SOUTH CHINA SEA

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    • Abstract
  • The drilling and completion data of 5 completed mega-extended-wells are listed in this paper,and according to the fifth mega-extended-reach well(C1ERW5),utilizing the autonomously-developed software for numerical analysis of down-hole drag torque,the drag torque during drilling and running casing were predicted and analyzed.The calculation results match well with the actual survey data.Meanwhile,the mechanics behavior of rotary steering system (RSS) was probed into quantitatively according to the RSS used in Liuhua mega-extended-reach well engineering.The calculation results show that the wellbore trajectory can be effectively controlled by adjusting the magnitude and orientation of the control force produced by the RSS.This paper can provide an important reference to the following implementation of other mega-extended-reach wells.
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