井下直驱螺杆泵无杆举升技术  

Submersible direct-drive progressing cavity pump rodless lifting technology

作　　者：郝忠献[1] 朱世佳[1] 裴晓含[1] 黄鹏[1] 童征[1] 王本元 李德印 HAO Zhongxian;ZHU Shijia;PEI Xiaohan;HUANG Peng;TONG Zheng;WANG Benyuan;LI Deyin(Research Institute of Exploration & Development,PetroChina,Beijing 100083,China;PetroChina Jilin Oilfield Company,Songyuan 138000,China;Xiafeng Electric Equipment Co.,Ltd.,Xinxiang 453621,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油吉林油田公司,吉林松原138000 [3]河南新乡市夏烽电器有限公司,河南新乡453621

出　　处：《石油勘探与开发》2019年第3期594-601,共8页Petroleum Exploration and Development

基　　金：中国石油天然气股份有限公司科技项目(2016B-4104)

摘　　要：针对传统有杆举升系统杆管偏磨严重、系统效率低、检泵周期短等问题,研发了井下直驱螺杆泵无杆举升技术,介绍了井下电机等关键工具的理论研究和室内实验情况以及举升系统施工工艺,分析了现场应用情况和经济效益,并与传统抽油机进行了对比。采用井下永磁同步低速大转矩电机直接驱动螺杆泵,提高了系统可靠性和适用性,室内测试表明该电机能够实现50～500 r/min无级调速,运行效率高,输出转矩大。开发了井下电机高承载保护器以及柔性传动系统等关键配套工具,形成了井下直驱螺杆泵无杆举升工艺,能够满足139.7 mm(5.5 in)套管的应用需求,适用于日产液量5～50 m^3的油井。现场试验应用100余井次,应用情况表明该技术能够消除杆管偏磨,相比同型抽油机节电30%以上,能够实现安全环保举升,具有良好的应用前景。Submersible electrical motor direct-drive progressing cavity pump(PCP)rodless lifting was studied to solve the traditional rod-drive pump problems,such as rod-tubing wearing,low efficiency and short running time.The theoretical researches and laboratory experiments of key tools such as submersible motor and the construction technology of lifting system were introduced.The field application and economic benefit were analyzed and compared with the traditional rod pumping unit.A new low speed and large torque permanent magnet synchronous motor was developed.This motor was used to drive PCP without gear reducer,which improved the reliability and feasibility.It can run at the speed from 50 to 500 r/min with stepless speed regulation,and it can perform high efficiency and large torque.Besides,other key supporting tools,such as motor protector and flex shaft,were developed.The submersible electrical motor direct-drive PCP technology can be used in a 139.7 mm(5.5 in)casing well,with daily output ranging from 5 to 50 m3.Until now,the technology has been deployed more than 100 wells.The field application results show that it eliminates the rod-tubing wearing and saves electric energy by more than 30%compared with the traditional rod pumping unit.And it also makes the oil produced in a safe and environmental friendly way.

关 键 词：无杆举升 井下直驱 螺杆泵 井下电机 人工举升 

分 类 号：TE9[石油与天然气工程—石油机械设备]