页岩储层网络压裂技术研究与试验

页岩储层压裂技术是页岩油气高效勘探开发的关键技术和核心技术。与常规低渗油气储层压裂单一长缝改善压裂效果不同，低孔极低渗的页岩压裂主要目标是形成具有有效导流能力的网络裂缝，确保压裂改造体积足够大，且经济有效。提出了页岩网络压裂有效改造体积（ESRV）的概念。在借鉴北美页岩气压裂的经验和前期国内页岩气压裂实践的基础上，针对我国页岩储层的具体特点，在压前进行评价方法、射孔参数优化、诱导复合测试压裂、网络压裂对策和排采技术等方面进行了探索性的研究，初步形成了页岩网络压裂技术，现场试验效果明显，解决了裂缝性脆性页岩压裂易砂堵、成功率低的难题。

Shale reservoir network fracturing technology research and experiment

Shale reservoir fracturing is the critical and center technology for shale oil and gas efficient exploration and development. Different from conventional low permeability oil and gas reservoir whose goal is to improve fracturing effectively by single fracture, the main goal of low porosity and low permeability shale is to form effective conductivity network fracture, ensuring fracturing volume large enough and economical and efficient. Proposed the concept of network effective fracturing stimulation volume of shale ( ESRV ), in reference to North American shale gas fracturing experience and the domestic shale gas fracturing based on practice, in view of Chinese specific characteristics of shale reservoir, it has been doing exploratory research in some aspects, including pre frac evaluation method, the optimization of perforating parameters, such as compound test fracturing, network fracturing methods, flow back technology and other aspects. The initial shale network fracturing technique is obtained, and it has good effect in field experiment, solving the problem of brittle shale sand of easily being screened out and low success rate.