中国地质2013，Vol.40Issue(3)：919-926,8.
川中龙岗—营山地区雷口坡组雷四3亚段储层成岩作用及孔隙演化
Reservoir diagenesis and porosity evolution of Leikoupo-43 Formation in Longgang-Yingshan area of central Sichuan Basin
吴仕玖 1曾德铭 1王岩 2陈虎 3杨雪飞1
作者信息
- 1. 西南石油大学“油气藏地质及开发”国家重点实验室,四川成都610500
- 2. 中石化西南油气分公司工程监督中心,四川德阳618000
- 3. 中国石油西南油气分公司川西北气矿,四川江油621709
- 折叠
摘要
Abstract
Good reservoirs are developed in the Middle Triassic Leikoupo-43 Formation in Longgang-Yingshan area of central Sichuan basin.There exist rich oil and gas resources in granular dolomite,suggesting good exploration prospect.Through macro-and micro-observation of thin sections and rocks from more than ten wells in combination with geochemical characteristics,the authors made a detailed investigation into diagenetic types and characteristics and examined the relationship between the diagenesis and the evolution of reservoir space.The findings show that the diagenetic evolution process of reservoir in the Middle Triassic Leikoupo-43 Formation in Longgang-Yingshan area of central Sichuan basin was complex,and during this process various diagenetic actions were developed,with the reservoir quality being clearly affected by the diagenesis.The compaction and pressure solution,multiphase cementation and multiphase packing action resulted in substantial reduction of intergranular pores and intercrystalline pores.The mixed water dolomitization,the supergene and burial dissolution and the tectonic disruption constituted the keys to the formation of high quality reservoir and the generation of massive intergranular dissolution pores,intragranular dissolution pores,intercrystalline dissolved pores and eroded fissures,which have now became the main oil and gas reservoir space.关键词
成岩作用/储层/储集空间/雷口坡组/龙岗-营山地区Key words
diagenesis/ reservoir/ reservoir space/ Leikoupo Formation/ Longgang-Yingshan area分类
天文与地球科学引用本文复制引用
吴仕玖,曾德铭,王岩,陈虎,杨雪飞..川中龙岗—营山地区雷口坡组雷四3亚段储层成岩作用及孔隙演化[J].中国地质,2013,40(3):919-926,8.
