川西拗陷中侏罗统沙溪庙组致密砂岩成岩相

来源 :天然气勘探与开发 | 被引量 : 0次 | 上传用户：ghchao0605

【摘要】

：

四川盆地川西拗陷中侏罗统溪庙组是四川盆地内重要的产气层位,已经发现的大、中型天然气田有十几处,具备巨大的油气勘探、开发潜力。通过对川西拗陷沙溪庙组致密砂岩储层的成岩作用、物性等基本特征的研究,明确了其致密砂岩成岩相类型,结果表明:①压实作用和胶结作用对中江气田沙溪庙组储层物性破坏作用很强,尤其是方解石胶结作用是导致储层致密化的决定性因素;②长石的溶蚀作用有利于改善储层的孔渗性能,绿泥石胶结(绿泥石衬边)对孔隙起到保护作用;③依照研究区胶结作用以及长石溶蚀作用对储层质量影响的明显差异,将成岩相分为主要4类:

【作者】

：

赵爽王琨瑜邓虎成

【机构】

：

中国石化西南油气分公司勘探开发研究院,成都理工大学能源学院,油气藏地质及开发工程国家重点实验室

【出处】

：

天然气勘探与开发

【发表日期】

：

2021年2期

【关键词】

：

川西拗陷中侏罗世沙溪庙组致密砂岩储层成岩作用成岩相

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川西拗陷中侏罗统沙溪庙组致密砂岩成岩相

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