摘要
针对鄂南地区难动用致密砂岩油藏水平井分段压裂裂缝形态复杂、直井压后效果差、易形成水平缝等技术难点,通过施工排量、平均砂比、加砂量、前置液比例等缝网压裂施工参数优化,开展了水平井缝网压裂工艺研究。泾河13井长8油层的现场应用表明,压裂后均形成了缝网,从实践上验证了缝网压裂施工技术的正确性。该技术的成功应用,较好地解决了低渗砂岩储集层易形成水平缝的问题,实现了鄂南地区水平井缝网压裂工艺的技术突破。
The hydraulic fracturing technology can barely be adopted in the multi - stage fractured horizontal wells in South Hubei, because there exists complex fracture morphology. After vertical well fracturing, low productivity is shown, and horizontal seam form easily. This research carries on network fracturing for horizontal well by optimizing the construction parameters, such as construction displacement, average sand ratio, sand rate, proportion of liquid front, etc. Field application of Jinghe 13 well of Chang 8 reservoir illustrates that the joint network is formed after fracturing and the correctness of joint network fracturing operation is verified in practice. The successful field appli-cation of this technology better solves the problem of forming horizontal seam easily in the low permeability sand-stone reservoir, and achieves a technological breakthrough of network fracturing for horizontal well in South Hubei.
作者
高尚
刘长龙
陶鹏
王锦昌
GAO Shang LIU Changlong TAO Peng WANG Jinchang(Bohai Oil Research Institute of Tianjin Branch, CNOOC, Tianjin 300452, China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China Research Institute of Engineering Technology of Huabei Branch of Sinopec,Zhengzhou 450006, China)
出处
《重庆科技学院学报（自然科学版）》
CAS
2017年第3期43-47,共5页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家自然科学基金项目"页岩气低成本高效钻完井技术基础研究"(U1262209)
"十二五"国家科技重大专项"特殊结构井钻完井工艺技术"(2011ZX05045)
关键词
低渗油藏
水平井
缝网压裂技术
参数优化
low permeability oil reservoir
horizontal well
network fracturing technology
parameter optimization
