摘要
介绍塔中地区碳酸盐岩溶蚀、热液白云岩化的标志,并识别出4种热液矿物组合。包裹体测温数据显示,热液产生于深埋藏作用,塔里木盆地奥陶系碳酸盐岩所经历过的热事件主要有3期。奥陶系碳酸盐岩热液对灰岩的溶蚀作用改善了岩石物性,而遭受白云岩化之后物性改善并不明显,作用于碳酸盐岩后使岩石的孔隙度和渗透率明显增加。热液流体的驱动力来自构造挤压,而不整合面和层位控制的热液溶蚀灰岩是该区重要的储层类型。
This paper analyzes the chemical dissolution and hydrothermal dolomitisation distribution in Tazhong area,and four hydrothermal minerals combinations are identified.It experienced three stages of thermal event in the Ordovician carbonate rock in Tarim basin through inclusion thermometry.And through physical property measurement we can safely draw the conclusion that hydrothermal dissolution improved the rock physical property of limestone,while the dolomitisation′s improment of rock physical property is not remarkable.Hydrothermal impact increase the rock porosity and permeability.It is the tectonic compression that drove the hydrothermal fluid,and unconformity surface and strata-bound hydrothermal dissolution limestone is a important reservoir form.
出处
《重庆科技学院学报（自然科学版）》
CAS
2013年第4期1-4,9,共5页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家重点基础研究发展计划(973计划)(2011CB201106)
关键词
塔中地区
热液作用
溶蚀作用
储层物性
Tazhong area
hydrothermal process
dissolution affect
physical property
