准噶尔盆地白家海凸起深部含煤层气系统储层组合特征  

Characteristics of reservoir assemblage of deep CBM-bearing system in Baijiahai dome of Junggar Basin

作　　者：陈刚[1] 秦勇[2] 胡宗全[1] 李五忠[3] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083 [2]中国矿业大学煤层气资源与成藏过程教育部重点实验室,江苏徐州221116 [3]中国石油勘探开发研究院廊坊分院,河北廊坊065007

出　　处：《煤炭学报》2016年第1期80-86,共7页Journal of China Coal Society

基　　金：国家科技重大专项资助项目(2011ZX05033-003)

摘　　要：准噶尔盆地东部白家海凸起发育较稳定的侏罗系煤层,埋深大于1 500 m。以往该区西山窑组和八道湾组煤层气试采取得了较好的效果,显示了白家海凸起深层煤层气具有较好的勘探前景。由于区内以常规油气开发为主,丰富的煤层气资源有待勘探开发。基于此,分析了区内侏罗系深部煤层赋存特征、热演化程度、煤层含气量及煤层顶底围岩等成藏地质条件,认为西山窑组煤层气为独立含煤层气系统,八道湾组煤层及其顶底砂岩组合为统一含煤层气系统。八道湾组源内型、源外型含煤层气系统成藏条件优越,煤层气及煤系砂岩气资源丰富,具有较大的共采潜力。Coal seams in Jurassic Xishanyao and Badaowan Formation were developed well in the Baijiahai dome of Junggar Basin.The burial depth of main coalbed is more than 1 500 m. Over the past ten years,the pre-production of several conventional oil and gas wells in coal seams had obtained good results,the volume of coalbed methane were more than 7 000 m3,which shows a good deep coalbed methane exploration prospect in Baijiahai dome.The amount of coalbed methane resources remains to be developed in Cainan oilfield.Based on the in-depth analysis of deep coalbed distribution characteristics,coal thermal evolution degree,the distribution of gas content and adjacent formation,it is considered that the Xishanyao coalbed is an independent CBM-bearing system,and the combination of Badaowan coalbed and its adjacent sandstone is another CBM-bearing system. The superior accumulation conditions of the innersource type and outside source type of Badaowan CBM-bearing system are enriched in CBM and sandstone gas resources,both two have a potential in commingled production.

关 键 词：准噶尔盆地 白家海凸起 含煤层气系统 储层组合 共采潜力 

分 类 号：P618.11[天文地球—矿床学]