二连盆地吉尔嘎朗图凹陷煤储层物性及煤层气资源有利区评价  

Evaluation of Coal Reservoir Property and Favorable Area of Coalbed Methane Resources in Jiergalangtu Depression of Erlian Basin

作　　者：王涛 邓泽 胡海燕[1] 吴松 范文田 WANG Tao;DENG Ze;HU Haiyan;WU Song;FAN Wentian(School of Geosciences,Yangtze University,Wuhan 430100,China;China National Petroleum Corporation Key Laboratory of Unconventional Oil&Gas,Langfang 065077,China)

机构地区：[1]长江大学地球科学学院,湖北武汉430100 [2]中国石油天然气集团有限公司非常规油气重点实验室,河北廊坊065077

出　　处：《煤矿安全》2020年第9期187-191,共5页Safety in Coal Mines

基　　金：国家科技重大专项资助项目(2016ZX05041-001);中国石油天然气股份公司重大科技专项资助项目(2017E-1401)。

摘　　要：以吉尔嘎朗图凹陷地区煤层气探井岩心和实验资料等为依据,探讨了吉尔嘎朗图凹陷地质构造演化特征,全面分析了凹陷煤岩与煤质、煤岩组成、煤层厚度、含气量及孔隙度等物性条件,确定凹陷在垂向上和横向上的有利区块。研究表明:在垂向上,认为吉尔嘎朗图凹陷赛汉塔拉组Ⅲ号煤、Ⅳ号煤和Ⅴ号煤是主要的含煤地层,煤岩含气性好,煤层累计厚度大,煤层物性总体上较好,富集条件好;在平面上,确定吉尔嘎朗图凹陷赛汉塔拉组Ⅲ号煤、Ⅳ号煤和Ⅴ号煤层的有利区块,有助于推进我国二连盆地低煤阶煤层气资源的勘探进程。Based on the core and experimental data of CBM exploration wells in Jiergalangtu Depression,Jiergalangtu Depression tectonic evolution characteristics,comprehensive analysis of the coal rank,coal rock composition,coal seam thickness,gas content and porosity and other physical conditions were discussed in this paper,determining the advantageous blocks the depression in vertical and horizontal direction.Results show that the 3~#,4~#and 5~#of Klbs of Jiergalangtu Depression are the main coal-bearing strata in the longitudinal aspect,with a good gas bearing capacity of coal rocks,large accumulative thickness of coal seams,generally good physical properties of coal seams and good enrichment conditions.On the lateral,the depression region of CBM wells in coal seam coal rank,coal rock,coal seam thickness,gas content and porosity were comprehensively analyzed,determining the favorable block of 3~#,4~#and 5~#seam of Klbs of Jiergalangtu Depression,which is helpful to advance the exploration of the low rank CBM resources in Erlian Basin.

关 键 词：吉尔嘎朗图凹陷 煤层气 含气量 储层物性 有利区 

分 类 号：TD712[矿业工程—矿井通风与安全]