致密砂岩气的成藏机理及勘探前景

Accumulation mechanism of tight sandstone gas reservoir and its exploration prospects

杨茜 付玲

北京大学地球与空间科学学院，北京 100871

School of Earth and Space Sciences, Peking University, Beijing 100871, China

致密砂岩气作为一种非常规油气资源，具有良好的勘探开发前景，越来越受到研究人员的关注。在前人研究的基础上，总结归纳了致密砂岩气藏的类型、成藏机理，揭示出致密气藏成藏的根本条件为天然气源岩、致密化储层及有效烃源岩与致密储层的直接接触；同时也阐述了致密砂岩气藏的地质特征，其中包括生、储、盖、圈、运、保、成藏、分布等，并对未来该类气藏的研究作出展望。

As a kind of unconventional oil and gas resources，tight sandstone gas attracts more and more researchers′ attention, having good exploration and development prospects. This paper summarizes the types of tight sandstone gas reservoir and accumulation mechanism on the basis of predecessors′ researches, and reveals that the gas source rock, reservoir densification and effective source rocks in direct contact with the tight reservoir are the fundamental conditions of the formation of tight sandstone gas reservoir. It also sums up the geological features of tight sandstone gas reservoir from many aspects, including source rock, reservoir, cap?鄄rock, trap, migration, preservation, accumulation and distribution, and makes expectation for the researches on this kind of reservoir.

10.6056/dkyqt201203007