高频层序地层格架中碳酸盐岩成岩作用研究——以哈萨克斯坦Marsel探区下石炭统谢尔普霍夫阶为例  

Carbonate diagenesis in high frequency sequence:A case study of Serpukhovian of Lower Carboniferous in Marsel block,Kazakhastan

作　　者：王媛 林畅松[2] 李浩[2] 孙彦达 何海全 王清龙 姬牧野 张曼莉[1] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国地质大学(北京)海洋学院,北京100083 [3]洲际油气股份有限公司,北京100016

出　　处：《天然气地球科学》2018年第1期28-41,共14页Natural Gas Geoscience

基　　金：国家重点基础研究发展计划(973)项目(编号:2011CB201100-03);中央高校基本科研业务费专项资金(编号:2652015362)联合资助

摘　　要：通过岩石薄片观察、阴极发光、扫描电镜、X-射线衍射和成像测井等资料分析,对哈萨克斯坦南部Marsel探区下石炭统谢尔普霍夫阶高频层序格架内部和层序边界附近的碳酸盐岩储层岩石学、储集空间和物性特征以及成岩作用和成岩演化进行了综合研究。结果表明,中下部高频层序(第1—第3个四级层序)内的准同生白云岩化和埋藏白云岩化作用叠加构造作用,以及中上部高频层序(第4—第6个四级层序)界面附近的准同生白云岩化作用和回流渗透白云岩化作用叠加较强的准同生期溶蚀作用和成岩早期大气淡水溶蚀作用,分别对谢尔普霍夫早—中期和晚期有利储层的发育具有重要贡献。中部高频层序(第3个四级层序)在埋藏成岩环境中的强胶结作用、强压实作用和弱溶蚀作用是储集物性变差的主要原因。Based on thin sections,cathodoluminescence（CL）,scanning electron microscope（SEM）,X-diffraction and imaging logging data analysis,Serpukhovian carbonate reservoir space types and properties,together with its diagenetic types,environments and evolution both in the Lower Carboniferous high frequency sequences and in the sequence boundaries were studied in Marsel block of southern Kazakhastan.The results show that in middle-lower part of Serpukhovian high frequency sequences（the 1^（st） to 3^（rd） forth-order sequences）,penecontemporaneous and burial dolomitization combined with tectonic processes made great contribution to early-middle Serpukhovian carbonate reservoirs.While in middle-upper part of Serpukhovian high frequency sequences（the 4^（th） to 6^（th） forth-order sequences）,penecontemporaneous and seepage-reflux dolomitization combined with strong penecontemporaneous and meteoric water dissolution at early diagenetic stage had significant impact on late Serpukhovian carbonate reservoirs quality.However,strong cementation and compaction with weak dissolution in burial diagenetic environment of middle Serpukhovian high frequency sequence（the third forth-order sequence）are key factors leading to poor reservoir properties.

关 键 词：哈萨克斯坦 下石炭统 碳酸盐岩 高频层序地层格架 储层成岩作用 

分 类 号：TE122[石油与天然气工程—油气勘探]