鄂南富县地区上古生界天然气成藏特征分析

通过对富县地区上古生界的构造、烃源岩、储集岩、盖层等方面的详细分析,认为上古生界具有良好的成藏条件,圈闭类型为岩性圈闭。依据烃源岩与岩性圈闭的关系,将上古生界成藏组合划分为源内型和近源型两类,结合前人研究成果,建立了上古生界天然气的成藏模式。成藏研究表明,富县地区岩性气藏分布主要受烃源岩和储集岩分布控制,富县地区东北部是烃源岩和多层系叠合砂体发育区,是勘探评价的有利目标。

Paleozoic gas reservoir forming characteristics analysis of Fuxian region

Through detailed analysis of the structure,source rocks,reservoir rocks,cap and other aspects of the Upper Paleozoic,the upper Paleozoic reservoirs are of good reservoir forming conditions,and the trap type is the lithologic trap.Based on the relationship between hydrocarbon source rock and lithologic traps,the combination of upper Paleozoic reservoir is divided into a source close to the type and source type categories.Combined with previous studies,the Upper Paleozoic gas reservoir model has been established.Reservoir studies indicate that the distribution of lithologic gas reservoirs Fuxian areas is mainly affected by hydrocarbon source rocks and reservoir rocks distributed control.The northeast of Fuxian region is the development zone of the source rocks and multi-laminated sand-based,and it is a favorable target for exploration evaluation.