水平井分段压裂各段产能评价技术研究进展

Progress on Each Section Productivity Evaluation Technology of Horizontal Well Staged Fracturing

为更好掌握水平井分段压裂后各层段产能贡献情况,分析水平井分段压裂各段产能评价存在的问题,系统梳理现有的3种水平井分段压裂各段产能评价技术,并提出该技术未来的重点攻关方向。结果表明:水平井分段压裂产能评价主要存在测试仪器输送困难和测试资料解释困难;产出剖面测井技术的测试仪器因井身结构和井况使其适用性受限制,分布式光纤监测技术可实时连续监测压裂动态,但数据解释仍是最大的难题,示踪剂监测技术选取合适的示踪剂可弥补上述2种技术的不足;下一步攻关方向应着重于各技术的测试工艺和数据解释。通过对水平井分段压裂各段产能评价技术综合剖析,可为现场测试提供技术参考和为后续技术发展提供新视角。

In order to better understand the productivity contribution of each section after horizontal well staged fracturing.The problems existing in the productivity evaluation of each section of horizontal well staged fracturing was analyzed,the existing three productivity evaluation technologies of each section of horizontal well staged fracturing were systematically combed,and the key research directions of this technology in the future were put forward.The conclusion are as follows:firstly,the productivity evaluation of horizontal well staged fracturing mainly has difficulties in transporting test instruments and interpreting test data.Secondly,the applicability of the testing instrument of the production profile logging technology is limited due to the well structure and well conditions.The distributed optical fiber monitoring technology can continuously monitor the fracturing performance in real time,but the data interpretation is still the biggest problem.Safe environment-friendly chemical tracer test choosing the right tracer can make up for the shortcomings of above two technologies.Thirdly,the next research direction should focus on the test process and data interpretation of each technology.Through the comprehensive analysis of each section productivity evaluation technology of horizontal well staged fracturing,it can provide technical reference for field test and provide a new perspective for subsequent technical development.