论川东石炭系地层超覆圈闭气藏

Expounding on Oil and Gas Reservoirs in Stratigraphical Overlap Traps inCarboniferous in East Sichuan

本文在分析了影响川东石炭系形成地层超覆圈闭的因素后,认为川东石炭系形成简单型地层超覆圈闭较少,主要为复合或复杂型地层超覆圈闭。这些圈闭的封闭条件较好,大多邻近大向斜,气源丰富,圈闭之内或其相邻圈闭多已证实为气藏,是进一步勘探的有利区。

After analyzing the factors which influence the formation of the stratigraphical overlap traps in Carboniferous in East Sichuan, the author considers that the simple type stratigraphical overlap traps formed in it are less and the compound or complex type are the main ones. The seal condi-tions of these traps are good and most of them are near to the large synclines with abundant gas source. Gas reservoirs have been mostly proved within these traps or in their adjoining ones. So that, these traps are the favourable areas for further exploring.