极大储层接触技术研究进展及发展方向

Research and Development of Extreme Reservoir Contact Wells

随着最大储层接触技术(MRC)的成功应用,极大储层接触技术(ERC)又提上了研发日程。沙特阿美石油公司通过与其他石油及服务公司合作,在ERC技术的研究方面进展顺利。ERC井是一种智能化多分支井,它不需要从井口到每个分支井眼或油气层的单独控制线缆,因此,从理论上讲,可以允许主井眼有无限多的智能分支井眼。通过跟踪沙特阿美公司ERC技术的研究进展,对ERC技术的提出、研究现状、关键技术及未来的发展方向等做了介绍。ERC井中的许多关键模块,如新型传感器、连接器系统、电能产生器以及各种流动控制阀等,已经从概念描述进入到实验室测试阶段。目前研发的关键是井下电磁感应、井下能量生产、主井眼和分支井眼之间的无线通信等技术。ERC技术未来将向可回收式智能完井系统、多分支进入系统及仿生井等技术方向发展。

With the successful application of Maximum Reservoir Contact（MRC） wells,the development of Extreme Reservoir Contact（ERC） wells is being investigated.By cooperating with other oil and service companies,Saudi Aramco made some progress on ERC,a kind of smart multilateral well which the control lines from wellhead to each lateral are not required,thus theoretically it may have unlimited laterals.This paper introduces the background of ERC well,it＇s research status and key technologies,and developing direction.A lot of key modules of ERC well,including new sensor,connector system,power generator,and different types of inflow control valve,have entered laboratory testing from concept.Currently,the key technologies needed for development include downhole inductive coupling,downhole power generation and wireless telemetry between motherbore and laterals.The development future of ERC wells is retrievable smart completion system,multilateral accessibility system,and bionic wells.