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Drilling & Production Technology ›› 2020, Vol. 43 ›› Issue (5): 20-23.DOI: 10.3969/J. ISSN.1006-768X.2020.05.06

• DRILLING TECHNOLOGY • Previous Articles     Next Articles

Selection and Test of the Placement Position about Hydraulic Oscillator

ZHANG Su1, LI Na1, XU Minglei2, LI Lichang2, FENG Qiang2, CHENG Lin3, CUI Shuqing4   

  1.  1 . Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China; 2. CNPC Bohai Drilling Engineering Company Limited, Tianjin 300450, China;3. Directional Well Drilling Company , CNPC Bohai Drilling Engineering Company Limited Tianjin 300000, China; 4. PetroChina Huabei Oilfield Company, Renqiu, Hebei 062550, China
  • Online:2020-09-25 Published:2020-09-25

水力振荡器安放位置选择及试验

张苏1, 李娜1, 徐明磊,2 李立昌2, 冯强2, 程林3, 崔树清4   

  1. 1 广东石油化工学院   2 中国石油集团渤海钻探工程有限公司  3 中国石油集团渤海钻探工程有限公司定向井技术服务分公司 4 中国石油集团华北油田公司
  • 作者简介:张苏( 1985 - ) , 2014 年获中国石油大学( 华东) 博士学位, 现任广东石油化工学院教师, 主要从事钻井技术研究工作。地址:( 525000) 广东省茂名市茂南区公馆镇广东石油化工学院石油工程学院, 电话:18602217595, E - mail: cnpczhangsu@ 126. com
  • 基金资助:
    广东石油化工学院科研项目“ 高效钻井关键技术研究” (编号:2019rc116) ?中石油集团公司项目“ 华北油田持续有效稳产勘探开发关键技术研究与应用” (编号:2017E - 1511 )。

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Abstract:

The hydraulic oscillator is mainly used for solving stall issues during sliding directional drilling of the bent motor. It can generate excitation force through the pressure pulse generated by chocking drilling fluid, which causes the vibration generator to flex, and then transfers the force to the drill string, overcoming friction and relieving the stall. Perform theoretical and experimental study on the placement position of the hydraulic oscillator in order to play the role of the tool effectively. The theoretical analysis shows that the main cause of the stall is the irregular well trajectory and the increased friction resistance of the lower drill string, therefore the friction resistance of the near bit section shall be firstly overcome to relieve the stall in the current working condition. The placement position of the hydraulic oscillator shall satisfy the vibration condition, and the optimum placement position shall be able to overcome the friction resistance of the near bit to the maximum extent within the range of vibration. The analysis results show that the optimal placement position of the hydraulic oscillator increases with the increase of well inclination and well depth, and decreases with the increase of the buildup rate in the theoretical analysis of three-stage and double-increase orbits, and the optimal placement position of the five-stage orbit does not change significantly with the buildup rate and well depth. The experimental results show that the release of drill string and the number of active drill string are significantly reduced after placing the hydraulic oscillator according to the calculation method, thus the stall can be relieved effectively.

Key words: hydraulic oscillator, placement position, stall, friction resistance 

摘要： 水力振荡器主要用于解决弯螺杆滑动定向钻进中出现的托压问题，该工具通过节流钻井液产生的压力脉冲发生激振力，引起振动发生器伸缩，进而将力传递到钻柱，克服摩阻从而缓解托压。为有效发挥该工具的作用，对其安放位置进行了理论和试验研究。托压的主要原因是井眼轨迹不规则和下部钻柱摩阻增大，在现有工况缓解托压要首先克服近钻头段的摩阻；水力振荡器安放位置要满足起振条件，最优安放位置应能在起振范围内最大限度的克服近钻头摩阻。分析结果表明，理论分析中三段式、双增式轨道对应的水力振荡器最佳安放位置随着井斜、井深的增大而增大，随着造斜率的增大而减小。五段式对应的最佳安放位置随造斜率和井深的变化不明显。试验结果表明根据计算方法安放水力振荡器后，显著减少钻具滑脱释放和活动钻柱次数，有效地缓解了托压。

关键词: 水力振荡器, 安放位置, 托压, 减阻

ISSN 1006-768X
CN 51-1177/TE
主管单位：中国石油天然气集团有限公司
主办单位：四川石油管理局有限公司
                 中国石油集团川庆钻探工程有限公司
Address: Editorial Department of drilling and production technology, No. 88, South Section 2, Zhongshan Avenue, Guanghan City, Deyang City, Sichuan Province
Post Code: 618300
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