试论东营、惠民凹陷与火成岩相关油气藏的成因

Approach to reservoir genesis related to igneous rocks in Dongying and Huimin seg

方法以东营、惠民凹陷已知油气藏为例，以地质和地球化学分析数据为依据，探讨与火成岩相关的油气藏成因。目的为该区勘探开发与火成岩相关的油气藏提供理论依据。结果火成岩作为源岩可成为壳源CO2气成藏的直接源岩，也可成为岩石化学CO2气成藏和以侵入岩热源作用排烃形成油藏的间接源岩；作为储集岩可形成火成岩原生油藏、残留油藏和次生油藏；作为盖、堵层又可形成大油田、稀油油藏和岩性油藏。结论火成岩作为源岩、储集层和盖层能形成许多与它相关的特殊油气藏。

Method Taking known reservoirs in Dongying and Huimin seg as examples, reservoirgenesis related to igneous rocks is discussed on basis of geology and geochemistry analysisdata. Purpose To provide theoretical basis for exploring and developing those reservoirs related to igneous rocks in this area. Result As source rocks, igneous rocks may be the directsource rocks of shell source CO, gas reservoir, may also be the indirect source rocks of rockchemistry CO, reservoir and reservoirs formed by expulsion of hydrocarbon as a result of heatsource effect of intrusive rocks; as reservoir rocks, igneous rocks can form primary reservoir, remnant reservoir and secondary reservoir, as cap rocks and plugging rocks, igneousrocks can form gaint oil field, light oil reservoir and lithologic oil reservoir. Conclusion Assource rock, reservoir rock and cap rock, igneous rocks can form lots of special oil and gasreservoirs having relations with them.