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根据油气运聚的动力和作用方式将油气藏成因分为 3类 8种 17式。这 8种分别是 :①高压势场作用下形成的油气藏 ;②低压势场作用下形成的油气藏 ;③油水携带溶解气游离释放形成的天然气藏 ;④浮力作用下形成的油气藏 ;⑤毛细管力作用下形成的油气藏 ;⑥天然气体积膨胀形成的深盆气藏 ;⑦分子吸附作用形成的煤层瓦斯气藏 ;⑧分子水合作用形成的水合甲烷气藏。①～③种为突发式流压作用形成的油气藏 ,④～⑥种为缓慢式烃势差形成的油气藏 ,⑦和⑧为非常规条件下天然气汇聚形成的特殊类型的 (油 )气藏。相同动力学成因的油气藏因实际地质条件的差异可以进一步分成亚类。不同动力学成因的油气藏的分布规律、主控因素和产状特征不同。研究油气运聚的动力机制和成因模式对指导油气田勘探、提高勘探效益具有重要意义。
According to the motive force and mode of hydrocarbon migration and accumulation, the genesis of oil and gas reservoirs is divided into three types and eight species and 17 types. The eight kinds of differences are as follows: ① oil and gas reservoirs formed under the action of high pressure potential field; ② reservoirs formed under the action of low pressure potential field; ③ natural gas reservoirs released liberally by oil and water carrying dissolved gas; ④ reservoirs formed by buoyancy; The formation of oil and gas reservoirs under the action of capillary forces; ⑥ the deep basin gas pool formed by the expansion of natural gas volume; ⑦ the coal seam gas reservoir formed by molecular adsorption; and the hydrated methane reservoir formed by molecular hydration. ① ~ ③ kinds of oil and gas reservoirs formed by sudden pressure flow, ④ ~ ⑥ kinds of oil and gas reservoirs formed by slow hydrocarbon potential difference, and ⑦ and ⑧ some special types of oil (gas) formed by natural gas convergence under unconventional conditions Tibetan. The same dynamic causes of the reservoir due to differences in the actual geological conditions can be further divided into sub-categories. The distribution of oil and gas reservoirs with different kinetic causes, the main controlling factors and the characteristics of producing are different. Studying the motive mechanism and genesis pattern of hydrocarbon migration and accumulation is of great significance to guide the exploration of oil and gas fields and improve exploration benefits.