裂缝-孔隙型特低渗透砂岩油藏开发技术--以安棚油田深层系为例

安棚油田深层系储层属扇三角洲相沉积，储层岩石的成分成熟度和结构熟度均较低，岩石胶结致密，具有特低孔隙度和特低渗透率特征。深层系储层裂缝较发育，储层中的天然裂缝以高角度或垂直裂缝为主，采用定向取心先进技术确定了地下裂缝的走向。针对储层物性差、自然产能低的特点，通过开发早期油藏地质研究、裂缝识别及分布评价，提出相了应的开发技术，采用压裂增产、高压增注等措施，以保证特低渗油田的有效开发。

THE DEVELOPMENT TECHNIQUES OF FRACTURE-PORE EXTRA-LOW-PERMEABILITY SANDSTONE RESERVOIRS-An example in Deep-buried Zones,Anpeng Oilfield

The features of reservoirs with extra - low - permeability in deep - buried zones of Anpeng Oilfield,southwestern of Henan province is described in the paper. The reservoirs are composed of fan - delta deposits. Thecomposition and texture maturity of reservoir rocks are lower. Research on coring and FMI logging indicates that themain fracture occurrence in reservoirs is greatly angular or is vertical. Advanced technique - oriented coring is adoptedto get the fracture azimuth. In light of the reservoir features of extra - low porosity permeability and less naturalproduction, through reservoir fracture identification and distribution study, corresponding development technique issuggested in the paper.Stimulation treatment such as fracturing, high - pressure to stimulate injection are adopted so asto ensure the development effect of Oilfield with extra - low - permeability .