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侵入岩是张性断陷盆地中较为发育的地质体。济阳坳陷第三纪辉绿岩油藏的发现表明在含油气盆地中,侵入岩能形成有经济价值的油气聚集。储层的形成是这类油藏形成的关键因素,裂缝系统的发育是条件之一,溶蚀孔隙的产生主要是烃源岩产生的有机酸形成的酸性溶液溶蚀硅酸盐类矿物的结果。侵入岩发育、有机酸产生、烃源岩压实排水和油气生成时间的匹配对侵入岩油藏的形成有决定作用,油气藏的形成还受岩体空间状态和岩体相带展布的控制。对这些因素的综合研究能够对侵入岩体的含油性做出较客观的评价。
Intruded rocks are the more developed geologic bodies in the Zhang faulted basin. The discovery of Tertiary diabase reservoirs in the Jiyang depression shows that intrusive rocks can form economically valuable oil and gas pools in petroliferous basins. The formation of reservoirs is the key factor in the formation of such reservoirs. The development of fracture systems is one of the conditions. The formation of dissolution pores is mainly caused by the dissolution of silicate minerals by acid solution formed by organic acids produced by source rocks. The development of intrusive rocks, the generation of organic acids, the compaction of source rock compacting drainage and the time of hydrocarbon generation play a decisive role in the formation of intrusive rock reservoirs. The formation of reservoirs is also controlled by the spatial state of rock mass and the distribution of rock mass facies . A comprehensive study of these factors can make a more objective assessment of the oily nature of the intruded rock mass.