塔里木盆地“多元复合-过程叠加”成藏模式及其应用

Reservoir accumulation pattern of multi-factor recombination and procession superimposition and its application in Tarim Basin

阐述了复杂叠合盆地油气地质特征及油气成藏主控因素,提出了多元复合—过程叠加成藏模式及有利勘探区带预测方法。研究表明,中国复杂叠合盆地具有多期次构造变革、多套生储盖组合、多旋回油气成藏、多期次调整与改造的油气地质特点,油气藏形成与分布主要受古隆起、烃源灶、区域盖层以及构造平衡带4个要素的控制。"要素复合、过程叠加、多期成藏、晚期定型"是复杂叠合盆地油气藏形成、演化和分布的基本模式。依据这一模式,在恢复研究区4个主要控藏因素演化历史的基础上,对塔里木盆地各主要成藏期奥陶系目的层有利油气聚集区带及构造调整改造后的有利勘探区带进行了预测和评价。

The geological characteristics and controlling factors for hydrocarbon accumulation in the superimposed basin were discussed. The reservoir accumulation pattern of multi-factor recombination and procession superimposition and the method for predicting the favorable exploration area were proposed. The research results show that there are four geological characteristics including the multi phase structural revolution, the multi-set of source-reservoir-seal combination, the multi-cycle hydrocarbon accumulation and the multi phase rearrangement and reconstruction in the complicated superimposed basin of China. The hydrocarbon accumulation and distribution were mainly controlled by the paleohigh, source rock kitchen, regional cap rock and kinematics equilibrium belt. The basic patterns of hydrocarbon accumulation, evolution and distribution in the complicated superimposed basin were characterized by the controlling factor recombination, procession superimposition, multi-period accumulation and late period reservation. According to the above patterns, the evolution history of four controlling factors for hydrocarbon accumulation in the research area was recovered to predict the favorable exploration area in the Ordovician target formation of Tarim Basin in different accumulation period after structural rearrangement and reconstruction