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. ...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.展开更多
电动潜油螺杆泵在稠油油井举升过程中不易出现杆管偏磨问题,提高了油井生产时效。为进一步提高现有配套工艺的技术适应性和运行效率,给出了一种通过优选关键技术设备和分析螺杆泵特性曲线,优化设计转子负载扭矩、系统效率等工艺运行参...电动潜油螺杆泵在稠油油井举升过程中不易出现杆管偏磨问题,提高了油井生产时效。为进一步提高现有配套工艺的技术适应性和运行效率,给出了一种通过优选关键技术设备和分析螺杆泵特性曲线,优化设计转子负载扭矩、系统效率等工艺运行参数的方法,并形成了能够适应原油黏度大于10 000 m Pa·s的特稠油井生产需要的电动潜油螺杆泵举升工艺配套技术。大港油田的现场应用结果表明,该技术能够为特稠油井实现高效举升提供较好的技术支撑,为同类油井举升工艺的优化配套提供技术借鉴。展开更多
基金Supported by the PetroChina Science and Technology Project(2016B-4104)
文摘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.
文摘电动潜油螺杆泵在稠油油井举升过程中不易出现杆管偏磨问题,提高了油井生产时效。为进一步提高现有配套工艺的技术适应性和运行效率,给出了一种通过优选关键技术设备和分析螺杆泵特性曲线,优化设计转子负载扭矩、系统效率等工艺运行参数的方法,并形成了能够适应原油黏度大于10 000 m Pa·s的特稠油井生产需要的电动潜油螺杆泵举升工艺配套技术。大港油田的现场应用结果表明,该技术能够为特稠油井实现高效举升提供较好的技术支撑,为同类油井举升工艺的优化配套提供技术借鉴。
