同井注采配套工艺技术及应用效果  

Matching technology and application effect of injection-production in the same well

作　　者：王德民 王研[2] 张蕾蕾[2] 刘金堂[2] 张怀钰[2] 何志国[2] 张雨[2] WANG Demin;WANG Yan;ZHANG Leilei;LIU Jintang;ZHANG Huaiyu;HE Zhiguo;ZHANG Yu(Chinese Academy Engineering,Beijing 100120,China;Daqing Oilfield Company Limited,Daqing 163453,China)

机构地区：[1]中国工程院,北京100120 [2]大庆油田有限责任公司,黑龙江大庆163453

出　　处：《中国石油大学学报（自然科学版）》2023年第2期64-72,共9页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中国石油重大工程技术现场试验项目(2015F-0201)。

摘　　要：同井注采技术中存在采注泵、封隔器故障难以判断、柱塞故障率高、注采比调整困难等问题,为此研发同井注采井下工况检测方法、可调有效冲程及防气锁液力反馈泵、柱塞组件螺纹防脱技术等配套工艺技术。结果表明:基于载荷曲线法和回注系统完整性检测法的同井注采系统管柱系统故障诊断方法,现场应用458口井,故障识别率达100%;在改变有效冲程抽油泵在不动管柱、不改变冲程和冲次条件下,可实现注采率在1∶6~200∶1间调整,该泵采用螺纹防脱技术和防气锁反馈泵有效解决抽油泵柱塞及丝扣断裂等故障和切槽液力反馈泵气锁现象;防上浮封隔器和稳水器能缩短地层产出的原油充满泵吸入口至封隔器胶筒之间的油套环空的时间,缩短低含油井含水率稳定时间。In the injection-production technology of the same well,there are problems such as the difficulty in judging the faults of injection-production pump and packer,the high failure rate of the plunger,and the difficulty in adjusting the injection-production ratio.Hence,some matching technologies have been developed,such as downhole working condition detection method of injection-production in the same well,adjustable effective stroke and anti-gas lock hydraulic feedback pump,as well as plunger component thread anti-release technology.The results show that the fault diagnosis method of rod and string system of injection-production system in the same well based on load curve method and integrity detection method of reinjection system has been applied to 458 wells in the fiel.The fault recognition rate reaches 100%.The adjustable effective stroke pump can realize the adjustment of injection-production ratio between 1∶6 and 200∶1 without raising the string and changing the stroke and stroke frequency.The pump adopts thread anti-release and anti-gas lock technology to effectively solve the fault of pumping plunger,thread fracture,and gas lock of slotted hydraulic feedback pump.The anti-floating packer and water stabilizer can shorten the time when the tubing and casing annulus between the pump suction and the packer rubber cylinder is filled with the crude oil produced from the formation,and reduce the stability time of water cut in low oil content wells.

关 键 词：同井注采 工况检测 可调冲程 防气锁 螺纹防脱 

分 类 号：TE931.1[石油与天然气工程—石油机械设备]