摘要
针对现有分层采油工艺技术存在的不适应检泵作业、有效工作寿命短、通讯可靠性差等问题,提出了电磁耦合智能分层采油技术,研制了核心工具及配套工具,并开展了现场试验。采用生产和配产管柱分离的丢手管柱结构,当两管柱在井下对接后,利用电磁耦合原理实现管柱间电能与信号的近距离无线传输,为井下多个智能配产器供电,并实现双向通讯。研制了适应井下复杂工况的电磁耦合传能与通讯装置、智能配产器、地面控制器等核心工具,以及大通径丢手锚定器、油井过电缆封隔器等配套工具,实现了技术定型。在大庆油田完成10口井现场试验,两管柱井下对接快捷、可靠,电磁耦合传能与通讯装置工作稳定,实现了井下分层流量、压力、温度的实时监测和分层产液量调控,提高了储层认识程度,取得了增油、降含水的生产实效。
To address the challenges of existing separated zone oil production technologies,which include incompatibility with pump inspection operations,short effective working life,and poor communication reliability,an innovative electromagnetic coupling intelligent zonal oil production technology has been proposed,core tools and accessory tools have been developed and applied in field tests.This technology employs a release-sub-involved pipe string structure that separates the production and allocation pipe strings.Once the two strings are docked downhole,the principle of electromagnetic coupling is used to achieve close-range wireless transmission of electrical power and signals between the strings,powering multiple downhole intelligent production allocators(IPAs)and enabling two-way communication between ground and downhole.The core tools including downhole electricity&signal transmission equipment based on electromagnetic coupling(EST),IPAs,and ground communication controller(GCC),and accessory tools including large-diameter release sub anchor and cable-crossing packers,have been developed to meet the complex downhole conditions.Field tests on ten wells in the Daqing Oilfield demonstrated that the downhole docking of the two strings was convenient and reliable,and the EST worked stably.Real-time monitoring of flow rate,pressure and temperature of separate layer and regulation of zonal fluid production were achieved,enhancing reservoir understanding,and achieving practical production results of increased oil output and reduced water content.
作者
杨清海
廖成龙
贾德利
祝英俊
于川
孔令维
于洋
杜凯
YANG Qinghai;LIAO Chenglong;JIA Deli;ZHU Yingjun;YU Chuan;KONG Lingwei;YU Yang;DU Kai(PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China;The Fourth Oil Production Plant of Daqing Oilfield,Daqing 163700,China)
出处
《石油勘探与开发》
北大核心
2025年第1期204-216,共13页
Petroleum Exploration and Development
基金
国家自然科学基金面上项目“基于载荷脉冲的抽油机井无线通讯方法研究”(52374067)
中国石油天然气股份有限公司科学研究与技术开发项目“智能分层注采工程技术研究”(2021ZG12)
中国石油天然气股份有限公司科技项目“复杂工况高效注采理论与新方法研究”(2023ZZ09)。
关键词
分层采油
电磁耦合
电能无线传输
信号无线传输
井下实时监测
注采协同调控
降水增油
separated zone oil production
electromagnetic coupling
wireless transmission of electrical power
wireless transmission of signal
real-time downhole monitoring
collaborative regulation of injection and production
oil production stabilization and water cut control
