四川盆地西部边缘地区油气前景

OIL-GAS POTENTIAL IN THE WESTERN MARGIN OF THE SICHUAN BASIN

本文以板块运动观点,综合四川盆地西部地区的沉积、构造、地热特征,对四川盆地西部边缘地区油气形成条件作了分析论证,认为该区具有良好的油气前景。通过对火井背斜的实践,指出本区的油气层以三叠系上统须家河组(中深层油气)为主,二叠系下统(深层气)为次,侏罗系沙溪店组局部也有浅层气。

In terms of plate tectonics and on the basis of the sedimentation, tectonics and geothermal activity, the present paper has dealt with the oil-gas generating conditions in the western margin of the Sichuan Basin, and concluded that this area has an excellent oil-gas potential. The petroleum geology of Huojing anticline indicates that the oil-gas-bearing horizons in the area consist mainly of the Xujiahe Formation of the Upper Triassic (middle-deep iol and gas), secondly, the Lower Permian (deep gas), and a part of the Shaximiao Formation of the Jurassic (shallow gas).