马西深层低渗透油藏人工裂缝及重复压裂设计研究

Designing study of created fracture and re-fracturing in Maxi deep low permeability reservoir

根据现有资料选择岩心观察、常规测井、微地震波测试、油藏数值模拟等方法对马西深层低渗透致密砂岩油层裂缝体系及其分布特点进行了研究,提出了深层低渗透砂岩油藏在注水开发过程中应遵循的原则。同时对马西深层油藏49口井、103井次的压裂作业效果进行了分析,对低渗透油藏开发后期重复压裂井的选井、选层条件以及影响因素进行了研究,对合理、高效地开发低渗透油藏具有一定的借鉴和指导意义。

The fracture system and distribution feature of Maxi deep low permeability sandstone reservoir are studied through core observation,conventional logging,microseismogram log and numerical simulation.The principles of water flooding to be followed in such reservoirs are proposed.The postfracture response of 49 wells after 103 well-times of fracturing operation in Maxi deep reservoir is analyzed.The selection of wells and layers for re-fracturing and its influence factors in late development life of low permeability reservoir are studied.This study is of reference significance to efficient development of low permeability reservoirs.