自激式涡流控制水力振荡器研制与应用

Development and Application of Self-Excited Vortex Control Hydraulic Oscillator

聂云飞 朱渊 范萧 赵传伟 张辉

NIE Yunfei ZHU Yuan FAN Xiao ZHAO Chuanwei ZHANG Hui

东营市瑞丰石油技术发展有限责任公司，山东东营 257092 中国石油大学（华东）机电工程学院，山东青岛 266580 中国石化胜利油田石油开发中心有限公司，山东东营 257000 中石化胜利石油工程有限公司钻井工艺研究院，山东东营 257000

Dongying Ruifeng Petroleum Technology Development Co. Ltd., Dongying, Shandong, 257092, China College of Mechanical and Electronic Engineering, China University of Petroleum (Huadong), Qingdao, Shandong, 266580, China Petroleum Development Center Co. Ltd., Sinopec Shengli Oilfield Company, Dongying, Shandong, 257000, China Drilling Technology Research Institute, Sinopec Shengli Oilfield Service Corporation, Dongying, Shandong, 257000, China

自激式涡流控制水力振荡器具有无易损件、制造成本低和压降小的优点，可减小钻进过程中的摩阻，降低压差卡钻的可能性，改善钻压传递效果，提高机械钻速。为了解决大位移井、长水平段水平井钻井过程中的高摩阻问题，研制了自激式涡流控制水力振荡器。该振荡器由稳态射流元件和涡流可变液阻区2部分组成，主要利用射流的附壁效应和特定的流道形式产生周期性涡流，以产生轴向振荡。采用二维平面模型，基于计算流体动力学方法，采用数值模拟方法，分析了自激式涡流控制水力振荡器内部的流动状态和其性能参数与入口流量的关系。数值模拟结果表明，自激式涡流控制水力振荡器的主要性能参数压力脉动幅值与入口流量呈平方关系，压力脉动频率与入口流量呈线性关系。现场应用表明，自激式涡流控制水力振荡器不仅能显著提高机械钻速，而且不会对随钻测量工具产生影响，具有结构简单、功能可靠和工作特性优良的特点。

An autonomous self-excited vortex control hydraulic oscillator has the advantage of having no degrading parts, a low manufacturing cost and small pressure drop, which can reduce the friction during drilling and thus reduce the possibility of getting stuck, thus optimizing WOB transmission and increasing the ROP. In order to solve the problem of high levels of friction during drilling of extended reach wells and long horizontal section horizontal wells, a self-excited vortex control hydraulic oscillator was developed, which consists of a steady-state jet element and a vortex variable liquid resistance zone. In principle, it mainly uses the Coanda effect of the jet and a specific flow path form to generate periodic vortex, so as to produce axial oscillations. By using a 2D numerical model, the flow state inside the self-excited vortex control hydraulic oscillator and the relationship between its performance parameters and the inlet flow rate were analyzed based the computational fluid dynamics method. The numerical simulation analysis shows that the main performance parameter of the oscillator, pressure pulsation amplitude, exhibits a square relationship with the inlet flow, and pressure pulsation frequency has a linear relationship with the inlet flow. Field applications show that the autonomous, self-triggering vortex control hydraulic oscillator can not only significantly improve the ROP, but also has no impact on MWD tools. It possesses the characteristics of simple structure, reliable function and excellent working performance.

中国海洋石油集团有限公司科技攻关项目“北部湾油田经济开发钻完井技术研究”之课题“特殊井身结构完井及防砂工艺研究”资助

https://doi.org/10.11911/syztjs.2019080