云南老厂多煤层储层压力和含气量对开发层系优选  

Optimal Selection of Reservoir Pressure and Gas Content in Multiple Coal Seams in Laochang, Yunnan Province

作　　者：郭明强[1] 傅小康[1] 印薇薇[1] GUO Ming-qiang;FU Xiao-kang;YIN Wei-wei(China United Coalbed Methane Corporation Ltd.,Beijing 100016,China)

机构地区：[1]中联煤层气有限责任公司,北京100016

出　　处：《煤炭技术》2020年第7期69-72,共4页Coal Technology

基　　金：国家科技重大专项(2017ZX05064);中海石油有限公司油气资源评价项目联合资助。

摘　　要：研究区位于滇东黔西地区,发育20~53套煤层,为了能优选主力开发层系,探讨了多煤层储层压力和含气量特征,主力煤层有4套,埋深在44.28~1 174.62 m,平均为736.70 m。煤层储层压力在1.21~12.41 MPa,平均为7.26 MPa;总体处于正常储层压力状态,为常压储层。各煤层含气量在0.70~24.20 m3/t,平均为10.43 m3/t。结果表明C7+8、C13煤为常压储层,C16煤为高压储层,C19煤为欠压储层;C13煤含气量最高,C19煤含气量相对最低,综合评价认为C7+8、C13、C16煤层作为一个开发层系,C19煤层作为接替层系。The area is located in eastern Yunnan and western Guizhou, and 20 to 53 coal are developed. In order to optimize the main development strata, the characteristics of reservoir pressure and gas content in multiple coal seams are discussed. There are four sets of main coal seams, and the buried depth range is between 44.28 and 1 174.62 m, the average is 736.70 m. The pressure of coal seam reservoir is between 1.21 and 12.41 MPa, the average is 7.26 MPa;which is generally in the normal reservoir pressure state and is a normal pressure reservoir. The gas content of each coal seam is between 0.70 and 24.20 m^3/t, the average is 10.43 m^3/t. 7+8 coal and 13 coal is atmospheric pressure reservoir, 16 coal is high pressure reservoir, 19 coal is under pressure reservoir, 13 coal has the highest gas content and 19 coal has relatively lowest gas content, 7+8 coal, 13 coal, 16 coal as a development layer and 19 coal as a replacement layer.

关 键 词：云南老厂 多煤层 储层压力 含气量 

分 类 号：P618.11[天文地球—矿床学]