Study On Chang8Reservoir Characteristics And Technological Responses Of Increasing Single Well Productivity In MaLing Area

Resent years, according to "finding another MaLing under MaLing"—the thought of Changqing Oilfield Company, the second oil production plant strengthens the efforts to explore, evaluate and develop lower series of triassic system. The production effect of Huan305well area and Huan82area is much better in the last three year. Chang8reservoir in MaLing Area is mainly affected by the provenance from west and southwest; it has similarity with Chang8reservoir in JiYan Area and XiFeng Area on sedimentation, but it also has its particularity. Chang812oil layer is the main oil layer of Chang8reservoir in MaLing Area. This oil layer’s distribution is stable; its connectivity is good; its scale is large; its sand body presents vast stretch trend. Based on the implementation effect analysis on exploration well and production well of recent years in this area, Huan305-Huan82well area, Huan82well area, Li148well area and Mu30well area are confirmed as advantageous production and construction areas. The heterogeneity of these areas is strong on the plane and vertical, then reservoir probability can be improved by drilling horizontal well on a large scale. Through optimizing drilling method, water flooding time, fracturing parameters and lead acid, single-well productivity can be improved. Based on well testing, production testing, development fashion, layer series of development, pressure maintenance and reasonable yield, long-term steady production can be realized and oil recovery efficiency can be increased.