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车镇凹陷套尔河洼陷沙三下亚段发育浊积成因的碳酸盐岩砂砾岩体,油藏类型为“泥包砂”式的岩性油气藏,钻探结果证实其含油性差异较大。研究了该砂砾岩体含油性的控制因素,认为围岩排烃强度存在是成藏的基本条件,砂体的储集属性(尤其是微裂缝发育)和成藏动力条件主要影响了它的含油程度,三者的相互作用决定了其能否形成高充满度的油气藏。
Sedimentary carbonate sand and conglomerate bodies are developed in the lower third member of Shaheer Sag of Chezhen depression. The reservoir type is “muddy sand” type lithologic reservoirs. The drilling results confirm the oiliness big different. The controlling factors of oil content in this glutenite body are studied. It is considered that the hydrocarbon expulsion intensity of surrounding rock is the basic condition for hydrocarbon accumulation. The reservoir properties of sand body (especially the development of microcracks) and the hydrocarbon accumulation kinetics mainly affect the oil content The degree of interaction between the three determines whether it can form a high degree of fullness of the reservoir.