断陷盆地岩浆活动强烈,火成岩分布很不均衡,并会侵入到泥页岩之中。通过地球化学分析发现,岩浆侵入显著促进其周围泥页岩热演化及页岩气生成;岩心观察证实,岩浆侵入过程中还使泥页岩产生大量裂缝。测井分析表明,侵入岩附近目前存在异常高压,它能够显著提高泥页岩对天然气的吸附量。综合分析认为,断陷盆地侵入岩周围页岩气成藏条件优越,是有利的富集区。 The faulted basins have strong magmatic activity, the distribution of igneous rocks is not balanced, and they intrude into shale. Through geochemical analysis, it was found that magmatic intrusion significantly promoted the thermal evolution of mud shale and the generation of shale gas. Core observation confirmed that a large number of fractures were also formed in mud shale during magmatic intrusion. Well logging analysis shows that there is an abnormally high pressure near the intrusive rock, which can significantly increase the amount of natural gas adsorbed by shale. According to a comprehensive analysis, shale gas accumulation conditions around the intrusive rocks in the rift basin are favorable, which is a favorable enrichment area.