水平井均衡供液完井静态控流参数设计

Design of static flow control parameters for equilibrium fluid supply completion of horizontal wells

陈阳 彭志刚 郭立强 张建国 李伟 王绍先

CHEN Yang PENG Zhigang GUO Liqiang ZHANG Jianguo LI Wei WANG Shaoxian

中国石化胜利石油工程有限公司钻井工艺研究院，山东东营　257017 中原油田勘探开发科学研究院，河南郑州　450046

Drilling Technology Research Institute, SINOPEC Shengli Petroleum Engineering Co. Ltd., Dongying 257017, China Exploration and Development Scientific Research Institute, Zhongyuan Oilfield, Zhengzhou 450046, China

针对胜利油田水平井均衡供液完井技术不完善，且面临单井产量低、投产层系复杂等诸多问题，建立了一套均衡供液完井技术“静态控流参数”设计方法，依次分为生产段分段、各投产井段配产、各投产井段节流压降设计和控流参数优化设计4 个步骤。生产段分段以减小投产层系非均质性和封隔物性差异大的相邻层段为目的；底水和边水油藏分别使用“见水时间一致”和“均衡供液”的原则进行各投产井段配产；制定适当的跟端流压，优化各投产井段所需节流压降；适当选择控流井段盲筛比，保证控流筛管发挥良好的控流特性。实例计算结果表明，使用“静态控流参数”方法设计出的均衡供液完井管柱的控流效果明显。该设计方法简便实用，为均衡供液完井技术在胜利油田的推广应用提供理论支持。

In view with imperfect equilibrium fluid supply completion technology for horizontal wells in Shengli Oilfield as well as the problems such as low single well production, complex producing zones, a set of design methods were established for ‘static flow control parameters’ of equilibrium fluid supply completion technology, which is divided into four steps in a proper order: division of producing sections, production allocation of each producing section, choke and pressure drop design for each producing section and design optimization of flow control parameters. Division of producing section is for the purpose of reducing the adjoining zones with great difference in heterogeneity and isolating physical properties of the producing zones; the bottom-water and edge-water reservoirs respectively use the principles of ‘consistent water breakthrough time’ and ‘equilibrium fluid supply’ for production allocation of each producing wells; the flow pressure at heel should be properly established to optimize the choke pressure drop required by each producing well section; the blind screen ratio should be properly selected for flow control section to ensure that the flow control screen can give full play of its flow control performance. The result of example calculation shows that the completion string with equilibrium fluid supply designed by ‘static flow control parameter’ method has remarkable flow control effect. This design method is easy and practical, and provides theoretical support for the promotion of equilibrium fluid supply completion technology in Shengli Oilfield.

10.13639/j.odpt.2014.06.012