准南地区水溪沟矿区下侏罗统煤系气赋存规律  

Occurrence Regularity and Forecast of Favorable Development Zone of the Lower Jurassic Coal Measure Gas in Shuixigou Mining area,Southern Junggar Basin

作　　者：云剑 宋慧波[1] 李友谊 桑荣 胡斌[1] YUN Jian;SONG Huibo;LI Youyi;SANG Rong;HU Bin(School of Resources and Environment,Henan Polytechnic University,Jiaozuo,Henan 454000;Shanxi Blue Flame Coalbed Methane Engineering Research Co.,Ltd.,Jincheng,Shanxi 048000;Changji State-owned Assets Investment and Operation Group Co.,Ltd.,Changji,Xinjiang 831199)

机构地区：[1]河南理工大学资源环境学院,河南焦作454000 [2]山西蓝焰煤层气工程研究有限责任公司,山西晋城048000 [3]昌吉州国有资产投资经营集团有限公司,新疆昌吉831199

出　　处：《中国煤炭地质》2024年第11期10-21,共12页Coal Geology of China

基　　金：新疆科技援疆计划“准南地区水溪沟矿区煤系气禀赋成藏地质条件及高效勘探技术转化及应用”(20241121680)。

摘　　要：准噶尔盆地南部水溪沟矿区下侏罗统八道湾组发育褐煤及长焰煤,蕴含丰富的煤系气资源。本文对水溪沟矿区煤储层特征及其主控地质因素进行了研究,主要取得以下认识和进展:①煤系主要为辫状河及三角洲沉积环境,主要可采煤层厚度变化呈现西北向东南由薄变厚再变薄的趋势,煤层厚度及埋深与含气量、甲烷浓度呈正相关性;②本区煤层渗透率变化较大,煤层非均质特点比较强,临界解吸压力、临储比较高,见气时间短,显示具有较好的产气潜力;③煤系储层的主控因素,体现在构造、埋深、沉积与水文地质作用等方面。Lignite and long-flame coal are developed in the Badaowan Formation of the Lower Jurassic in Shuixigou mining area,southern Junggar Basin,which contains abundant coal-measure gas resources.In this study,coalbed methane geology research methods were used to investigate the characteristics of coal reservoirs in the Shuixigou mining area and their main geological controlling factors,The main new insights and progress obtained are as follows:①The coal measures are mainly in braided river and delta sedimentary environment,and the thickness of the main recoverable coal seam changes from thin to thick to thin from northwest to southeast.The analysis and research show that the thickness and buried depth of coal seam are positively correlated with the concentration of gas and methane;②The permeability of coal seam varies greatly,the heterogeneity of coal seam is relatively strong,the critical desorption pressure is high,the temporary storage is relatively high,and the gas finding time is short,which shows that the coal seam has a good gas production potential;③Analysis and study of the main controlling factors of coal measure reservoirs,which are embodied in the aspects of structure,burial depth,sedimentation and hydrogeological processes.

关 键 词：侏罗系 煤系气 煤系储层特征 准噶尔盆地 

分 类 号：P618.13[天文地球—矿床学]