聚簇孔机械深穿透微型单涡轮特性分析  

Characteristic analysis of micro single turbine for mechanical deep perforation of clustering boreholes

作　　者：易先中[1] 贺育贤 万继方 刘航铭 贺东旭[3] 柯扬船[4] 王利军 YI Xianzhong;HE Yuxian;WAN Jifang;LIU Hangming;HE Dongxu;KE Yangchuan;WANG Lijun(School of Mechanical Engineering,Yangtze University,Jingzhou Hubei 434023,China;Institute of Unconventional Oil and Gas Engineering,CNPC Engineering Technology R&D Company Limited,Beijing 102206,China;Zhuangxi Oil Production Plant,China Petroleum&Chemical Corporation Shengli Oilfield Branch,Dongying Shandong 257237,China;College of Science,China University of Petroleum(Beijing),Beijing 102249,China;CNOOC Energy Development Co.,Ltd.Engineering Technology Branch,Tianjin 300452,China)

机构地区：[1]长江大学机械工程学院,湖北荆州434023 [2]中国石油集团工程技术研究院有限公司非常规油气工程研究所,北京102206 [3]中国石油化工股份有限公司胜利油田分公司桩西采油厂,山东东营257237 [4]中国石油大学(北京)理学院,北京102249 [5]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《中国安全生产科学技术》2022年第9期125-132,共8页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(51974035,U1762214,U1262108);湖北省重点研发计划项目(2020BAB055)。

摘　　要：为提高油气井产能,目前主要方法是水力压裂增油、增气技术,但压裂返排水存在层间泄漏和运移问题,会对区域水资源安全构成危害。为了解决该类问题,提出机械深穿透微型单涡轮驱动钻孔方案,在油气储层中形成若干聚簇孔,并设计5种微型单涡轮结构,采用CFD软件对不同特性参数和钻井液性质下的微型涡轮进行数值模拟。研究结果表明:5种微型单涡轮(A,B,C,D,E)的最大扭矩分别可达微型双涡轮最大扭矩的79.1%,69%,77%,90.4%,108.7%,最大效率值分别为40.8%,40.2%,41.7%,38%,40.5%,略低于微型双涡轮的最大效率45.46%;流量增加,微型单涡轮(E)扭矩和压差均显著增大,最大值分别为11.13 N·Fm和0.40 MPa,输出功率和效率随着转速增加,先增大后减小,在流量为1200 L/min时出现最大值,分别为2.43 kW和40.5%;钻井液密度增加,微型单涡轮(E)扭矩、压降、输出功率和效率明显增大,最大值分别为12.98 N·m,0.815 MPa,5.44 kW,39.7%,钻井液黏度增加,微型单涡轮(E)压降增大,扭矩、输出功率和效率均减小。分析研究认为微型单涡轮(E)能代替微型双涡轮,可提供良好动力。In order to improve the productivity of oil and gas wells,the main methods at present are the hydraulic fracturing technology for increasing oil and gas production.However,the interlayer leakage and migration of fracturing backwater will endanger the safety of regional water resources.A drilling scheme driven by mechanical deep penetration micro single turbine was proposed,and several clustering boreholes were formed in the oil and gas reservoirs.Five kinds of micro single turbine structures were designed,and the CFD software was used to numerically simulate the micro turbine under different characteristic parameters and drilling fluid properties.The results showed that the maximum torque of 5 types of micro single turbine(A,B,C,D,E)could reach 79.1%,69%,77%,90.4%and 108.7%of the maximum torque of micro twin turbines,respectively,and the maximum efficiency values were 40.8%,40.2%,41.7%,38%and 40.5%,respectively,which were slightly lower than the maximum efficiency of micro twin turbines as 45.46%.With the increase of flow rate,both the torque and pressure difference of the micro single turbine(E)increased significant,and the maximum values were 11.13 N·m and 0.40 MPa,respectively.As the rotational speed increased,the output power and efficiency increased first and then decreased,and the maximum values appeared when the flow rate was 1200 L/min,which were 2.43 kW and 40.5%,respectively.When the density of drilling fluid increased,the torque,pressure drop,output power and efficiency of the micro single turbine(E)increased significantly,with the maximum values of 12.98 N·m,0.815 MPa,5.44 kW and 39.7%,respectively.When the viscosity of drilling fluid increased,the pressure drop of micro single turbine(E)increased,and all the torque,output power and efficiency decreased.It was concluded that the micro single turbine(E)could replace the micro twin turbines and provide good power.

关 键 词：涡轮动力特性 微型单涡轮 流场仿真 机械深穿透 聚簇孔眼 

分 类 号：X941[环境科学与工程—安全科学]