吐哈盆地煤储层物性特征研究及煤层气资源前景

Study on physics characters of coal reservoirs and outlook of coal bed methane resources in Tuha Basin

在详细研究吐哈盆地煤储层物性的基础上,对该盆地煤层气前景进行了初步评价。根据煤储层的孔隙分布特征、渗透性及对甲烷的吸附能力,吐哈盆地可分为:①盆地南部沙尔湖预测区及大南湖预测区的贫气区;②北部坳陷及哈密坳陷的低中煤层气富集的中渗区;③盆地西部的艾维尔沟矿区、托克逊坳陷及东部的野马泉勘探区为中等煤层气富集的低渗区。认为今后煤层气研究工作重点区域应放在有利煤层气储存的地区。

Base on a detailed study on the characters of coal reservoirs in Tuha Basin, the paper made a preliminary evaluation on the outlook of the coal bed methane in the Tuha Basin According to the distribution features of the porosity, permeability and absorptive capacity of the coal reservoirs, the Tuha Basin can be divided into three sections The Section One is meager coal bed methane area located in Sha'er Lake prediction area and Big South Lake prediction area in the south of the basin The Section Two is a middle permeable area located in north dent and Hami dent in the north part of the basin The Section Three is a middle accumulated coal bed methane area with low permeability located in Aiwei'ergou Mining Area, Tokesong dent and east Yemaquan exploration area of the basin The paper suggested the focus area of the future coal bed methane study shall be at the area with favorable coal bed methane reservoirs