碳酸盐岩埋藏溶蚀研究进展

Study progress on buried dissolution in carbonate rock

 雷川 陈红汉 苏奥 王丽娜

中国科学院兰州油气资源研究重点实验室，甘肃 兰州 730000 中国科学院大学，北京 100049 中国地质大学（武汉）资源学院，湖北 武汉 430074 中国石油天然气股份有限公司吉林油田公司勘探开发研究院，吉林 松原 138000

Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences，Lanzhou 730000, China University of Chinese Academy of Sciences, Beijing 100049, China Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China Research Institute of Exploration and development, Jilin Oilfield Company, PetroChina,
Songyuan 138000, China

 流体活动对储层的影响包括建设性作用（溶蚀）和破坏性作用（胶结）。近地表岩溶形成的溶洞和裂缝型碳酸盐岩已经是公认的有效储集层，而埋藏成岩阶段的流体活动对碳酸盐岩储集层次生溶蚀空间的贡献大小以及规模问题，学术界仍存在2种不同认识。在调研国内外文献资料的基础上，文中综述了埋藏成岩阶段溶蚀性流体类型，总结了埋藏溶蚀作用的岩相学和地球化学标志，评述了2种观点和主控因素，强调了碳酸盐岩埋藏溶解作用的地区差异性和对先存疏导体系的依赖性，并完善了碳酸盐岩埋藏岩溶模式。建议从寻找区域埋藏溶蚀演化的主控因素入手，同时考虑埋藏成岩阶段流体对储集层的溶蚀作用和阻塞作用。指出埋藏溶蚀定量计算（或模拟定量计算）是碳酸盐岩埋藏溶蚀次生孔隙领域亟待解决的问题。

 Constructive (dissolution) and destructive (cementation) impacts are the main aspects of liquid effect on reservoirs. Karst cave and fracture derived from near?鄄surface karst have been recognized as effective carbonate reservoir. There are different understandings among the academic circles on the topic which is the significant contribution of the buried dissolution in carbonate reservoirs to the secondary porosity. On the basis of a large number of literatures being reviewed, this paper reviewed the classification of the mesogenetic fluid, summarized petrographic and geochemical marks, introduced the two opposite views and main control factors, emphasized the regional differences and the dependence of the channel system and improved the buried dissolution mode. Looking for main control factors of burial dissolution evolution in different region and considering to the dissolution and chocking effect the synchronously may be an effective way. The quantitative calculation of burial dissolution (or simulation) is an urgent problem in the field of secondary porosity of carbonate.

10.6056/dkyqt201402007