中国南方含油气区构造—沉积类型及其勘探潜力

南方含油气的复杂构造区根据构造—沉积类型的不同,可将其分为四种类型。通过对不同类型典型含油气区的生烃量及非构造运动天然气散失量的化学动力学计算,认为这四种类型含油气区的油气聚集潜力从好到坏依次为:喜马拉雅运动抬升暴露型、燕山运动抬升暴露型、反复抬升—沉降型和海西—印支运动抬升暴露—后期浅埋型。主要构造运动发生越晚,对油气保存越有利。

Tectonic-Sedimentation Types and Exploration Potential of Prospecting Oil Areas in Southern China

The complex prospecting oil areas in southern China can be divided into four different tectonic-sedimentary types by different Standards. Based on calculating hydrocarbon-generating amount and natural gas-dissipating amount caused by non-tectonics, the potential of hydrocarbon accumulation in order of types from good to bad is the uplift-exposure during Himalayan orogeny, uplift-exposure during Yanshan orogeny, the alternated uplift-subsidence during Yanshanian orogeny, the early uplift-exposure to the late shallow burial during Hercynian-Indosinian orogeny. It is shown that the later the orogeny was in time, the more favorable it is to the condition of hydrocarbon preservation.