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Discontinuous Point-the-bit Rotary Steerable Bottom Hole Assembly Mechanics Analysis of Influencing Factors
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Liang-lin GUO1, Cheng-yu XIA2, Jun-jie JI1, Quan-ying GUO2, Heng-da CHE1, Zhi-qiang HUANG1, *
Science Technology and Engineering | 2025, 25(12) : 4967 - 4974
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Science Technology and Engineering | 2025, 25(12): 4967-4974
• Papers·Petroleum and Natural Gas Industry •
Discontinuous Point-the-bit Rotary Steerable Bottom Hole Assembly Mechanics Analysis of Influencing Factors
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Liang-lin GUO1, Cheng-yu XIA2, Jun-jie JI1, Quan-ying GUO2, Heng-da CHE1, Zhi-qiang HUANG1, *
Affiliations
  • 1 School of Petroleum Engineering, Yangtze University, Wuhan 430100, China
  • 2 School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China
Published: 2025-04-28 doi: 10.12404/j.issn.1671-1815.2402995
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In deep oil and gas development, it is difficult to drill targeted with traditional sliding drilling tools because of the increasing number of wells with complex structure. To help solve the problem of wellbore trajectory control in complex structural wells, a discontinuous directional rotary steerable structure was proposed. Moreover, a mechanical model of discontinuous directional rotary steerable bottom hole assembly(RSBHA) was established by combining the element division idea of finite element method and the continuous beam-column theory. The bit side force and dip angle of were calculated by compiling mechanics program. The effects of borehole geometry parameters, drilling parameters and drill assembly structure parameters on mechanical properties were analyzed. It is concluded that weight on bit and inclination of hole have little influence on bit side force, but the structural parameters of drill assembly have great influence. The research results provide theoretical premise for the optimization of RSBHA structure and drilling parameters, and provide mechanical support for accurate control of wellbore trajectory.

rotary steerable  /  bottom hole assembly(BHA)  /  bit side force  /  borehole trajectory
Liang-lin GUO, Cheng-yu XIA, Jun-jie JI, Quan-ying GUO, Heng-da CHE, Zhi-qiang HUANG. Discontinuous Point-the-bit Rotary Steerable Bottom Hole Assembly Mechanics Analysis of Influencing Factors[J]. Science Technology and Engineering, 2025 , 25 (12) : 4967 -4974 . DOI: 10.12404/j.issn.1671-1815.2402995
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Year 2025 volume 25 Issue 12
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Article Info
doi: 10.12404/j.issn.1671-1815.2402995
  • Receive Date：2024-04-23
  • Online Date：2025-07-09
  • Published：2025-04-28
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History
  • Received：2024-04-23
  • Revised：2025-01-22
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Affiliations
    1 School of Petroleum Engineering, Yangtze University, Wuhan 430100, China
    2 School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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