黄河口凹陷油气勘探潜力分析

Analysis on potential of hydrocarbon exploration in Huanghekou depression

黄河口凹陷已历经勘探开发近30年,油气勘探程度较高,累计发现油气约5.95×10~8m^3。但近年来,随着勘探难度的加大,剩余油气资源量的规模倍受关注。应用油田规模序列法对该凹陷资源量进行了评价,结果表明:黄河口凹陷仍有88～146个180×10~4m^3级地质储量以上的待发现油气田,剩余资源总量这(6.57～7.43)×10~8m^3,勘探潜力较大。在充分考虑供烃个数,构造带与源岩的接触关系和油气运移距离三个条件的基础上,进一步对凹陷各成藏有利区进行了分级分带划分,预测了油气有利分布区。

After the exploration and development for nearly thirty years,Huanghekou depression has come into a higher level of exploration,with an accumulation reserve of 5.95×10~8 m^3.In the recent years,along with the rise of exploration risks,the scale of residual petroleum resources in the depression is drawing more and more attention.The oil field order method is applied into the evaluation of remaining resources, and the result shows that there are still 88-146 oil fields with the scale of undiscovered reserves more than 180×10~4 m^3,and the total remaining resource reserve are about (6.57-7.43)×10~8 m^3.Finally,on the basis of the number of source rocks,the contact relationship between the tectonic belt and its source rock and the migration distance of hydrocarbon, the areas of favorable hydrocarbon accumulation are classified and predicted.