地质通报2016，Vol.35Issue(2)：379-382,4.
西藏羌塘盆地达卓玛地区含油白云岩的发现及其意义
Discovery of oil-bearing dolomite in Dazhuoma area of Qiangtang Basin and its ;significance
摘要
Abstract
The dolomite serves as the most important reservoir which has always been the key to the evaluation and exploration of oil and gas. The oil-bearing dolomite was found recently near the Dazhuoma area, Amdo. The oil-bearing dolomite develops in the Buqu Formation of Middle Jurassic with the thickness over 30m and the length over 80m. The rocks are the medium-coarse-grain dolomite. The porosity of the samples is in the range of 5%~17%and the permeability is from 2.84×10-3μm2 to 236×10-3μm2. The dolomite belongs to the low-porosity and low-permeability to medium-porosity and low-permeability reservoir which is similar to the high quality dolomite of Longeni. The new oil-bearing dolomite found in Amdo lies in the same layer as the dolomite in the Bi⁃luo Co-Angdaer Co zone, from which the authors infer that the oil-bearing dolomite has an east-west distribution for about 180km and is the most important reservoir in the basin. The discovery of oil-bearing dolomite in Dazhuoma area expands the distribution and extent of dolomite reservoir, which can provide new basis for the oil exploration and disposition in Qiangtang Basin.关键词
含油白云岩/达卓玛地区/储层/羌塘盆地Key words
oil-bearing dolomite/Dazhuoma area/reservoir/Qiangtang Basin分类
天文与地球科学引用本文复制引用
许明,钱信禹,李亚林,韩中鹏,戴敬华..西藏羌塘盆地达卓玛地区含油白云岩的发现及其意义[J].地质通报,2016,35(2):379-382,4.基金项目
中国地质调查局项目(编号12120115000201-01)和国家自然科学基金项目 （编号12120115000201-01）
