川东北地区毛坝气田特征摘 要川东北地区是四川盆地天然气勘探最具活力的地方。四川东北地区的天然气勘探在近几年取得了技术上的新突破，现在面临的最重要的问题就是怎么样去将在四川东北地区的突破成果在四川的其他地区进行实施和开展。想要解决到目前的这个问题，就必须在油气藏的研究这个理论基础上进行研究。本文将以川东北地区毛坝气田为代表，结合前人资料，通过对四川的毛坝气田所处的环境进行勘探和研究，分析出其成藏背景和历史以及成藏的模式和特点，为了进一步确认四川东北部地区的地质情况的特点，需要进一步研究当地的热史、埋藏史、圈闭演化、烃类演化、储层演化。总结出毛坝气田的成藏演化、成藏规律和成藏模式，研究揭示了毛坝气藏现存这多种不同的烃流体源，其中包括油裂解气、干酪根裂解气和沥青裂解气等，通过漫长的岁月成藏，经历了一系列的复杂过程在得以形成，这些地质的成型结构是这种成藏演化的根本原因。关键词：毛坝气田；储层特征；成藏机制CHARACTERISTICS OF MAOBA GAS FIELD IN NORTHEAST SICHUANAbstractNortheast Sichuan is the most active area for natural gas exploration in Sichuan Basin. With Sinopec's major breakthrough in natural gas exploration in northeastern Sichuan， how to further and steadily promote the exploration results to eastern and even southern Dachuan is a major strategic problem， and the study of oil and gas reservoirs is one of the important theoretical breakthroughs to solve this problem at this stage. This paper will take Maoba gas field in northeastern Sichuan as a representative and combine with the previous data, through the anatomical analysis of the geological survey， reservoir-forming background, reservoir-forming model and gas reservoir characteristics of Maoba gas field, and through the in-depth study of thermal history, burial history, trap evolution, hydrocarbon evolution and reservoir evolution, it will clarify the reservoir-forming evolution, reservoir-forming regularity and reservoir-forming of the tectonic composite superimposed...
