文章主要从煤系含水层的水化学特征,含水层间水力联系,地下水补、径、排特征及水动力条件等探讨了水文地质条件对煤层气成藏的控制作用.研究表明:矿区整体上属中矿化度-高矿化度区,八道湾向斜核部区域矿化度高,不利于产甲烷菌的生存和产气,浅部地区较适于甲烷菌的生存,但产气效率不高;矿区多发育具阻水作用的逆断层,对煤层气的逸散起到一定的封堵作用,水力联系主要为上覆的烧变岩含水带、松散岩类孔隙含水岩系对煤系含水层产生的垂向渗滤,造成煤层气随水的流动而运移和散失,进而形成一定深度的煤层气风化带;矿区的西部和北部区域是矿区煤系地下水的高矿化度和低水位的汇水洼地,是该水文地质单元中煤层气的富集区域;八道湾向斜径流带以深-轴部区域及北单斜径流带以深的滞留区水动力条件较弱,有利于煤层气的保存和富集.

Because that the Santanghu coalfield has rich coal resources,and the exploration degree is high,this paper introduced the geological circumstances and coal resources(19.639 billion t)of main workable coal seam(No.9 coal seam),and combining with the contour maps of coal ash and volatile matter,the main coal quality indicators of No.9 coal seam were researched.The research of results showed that: the main coal type of No.9 coal seam is the extra low moisture content coal,part of the coal is low moisture content coal and medium moisture content coal;according to the 535 testing data from Shitoumei,Hanshuiquan,Kumusu and Tiaohu mining areas,we could see that the main coal type of No.9 coal seam is the low ash coal,secondly,is the extra low ash coal,part of the coal in Hanshuiquan and Kumusu is the medium ash coal;according to testing results from the 559 drills,we could see that the main coal type of No.9 coal seam is the high volatile matter coal,secondly,is the medium-high volatile matter coal,in the most part of Kumusu area,part of Hanshuiquan and Tiaohu area,there exists the extra high volatile matter coal;at west area(Hanshuiquan area)and middle area(Shitoumei area),the extra low sulfur coal and low sulfur coal distributes equally,at individual area,the medium sulfur coal exists,but in the Kumusu and Tiaohu area,the main coal type is the extra low sulfur coal,that is to say,the main coal type of No.9 coal seam is extra low sulfur coal,secondly,is the low sulfur coal;the major part of the coal is high calorific value coal,the medium-high calorific value follows secondly,at part of the Shitoumei area,there exists the extra high calorific value coal,at part of the Kumusu area,the medium calorific value coal exists.Therefore,the coal from No.9 coal seam is the good thermal coal,gasification coal and industrial boiler coal.But the indicators varied at different mining areas,so for industrial application,how the variation of coal quality indicators affects the equipment and the utilization efficiency should be noticed.

本文以塔勒德萨依勘查区CS-1井所获得的煤储层参数和排采试验数据为基础,对勘查区内的煤储层特征进行了较系统的分析,结果表明CS-1井煤储层具有煤层埋深大、主力煤层间距小、顶底板封盖效果好、煤体结构较破碎、储层压力高、渗透率中等、含气饱和度与临储比高的特点.CS-l井主力煤层含气性和储层物性整体较好,具有较好的煤层气产能前景.勘查区内构造简单,煤层分布稳定,CS-1井在本区具有一定的代表性,通过对该井的分析研究,显示勘查区良好的煤层气开发前景.

准噶尔盆地南缘XX勘查区地质构造较简单,煤层分布稳定,勘查区内以往仅施工了少量的参数井,未开展过煤层气压裂、排采工作,其周边也无煤层气井的相关工作经验可借鉴.文章以该区施工的第一口煤层气排采井为例,结合该区的地质条件,煤层赋存情况等,分别从目标层(段)、射孔、压裂液配方、支撑剂、压裂方式与规模等方面探讨了适合该区储层条件的煤层气压裂工艺.结果表明,使用光套管注入,投球选压,采用中砂比、大排量的压裂规模进行多层压裂的储层改造方法在该勘查区具有一定的代表性.

简述侏罗系中统西山窑组为新疆尼勒克煤田主要含煤地层,湖相、沼泽相沉积.研究表明,区内宏观煤岩类型为暗型煤、光亮型煤、半暗型—半亮型煤;显微有机组分以惰质组为主,镜质组次之;煤质为特低水分、特低灰—低灰分、中挥发分—高挥发分、特低硫、特低氯、特低磷、中发热值—高发热值;低变质,以不粘煤为主,是很好的民用煤和动力用煤.

基于新疆伊利盆地煤炭资源调查评价工作所获取的较全面的煤田地质资料及石油钻井资料,结合层序学理论思想,对伊犁盆地中下侏罗统含煤地层的沉积环境与沉积体系进行了系统地分析研究,综合归纳各聚煤期煤层聚煤规律和分布范围,为盆地内含煤有利区研究提供了依据.

通过对黄山村井田地质资料的分析,阐述了井田地质构造的特证,说明了构造对地层及煤层厚度的影响,对今后矿井的设计及开采有一定指导作用。

The paper investigates the rules of gas geology in aspects of geological tectonics of the basin,coal field tectonics,burial depth of coal seams,hydrogeology,etc.in Kubai coal field,and analyzes gas distribution,which provides a certain geological criteria for future gas geology work and coal extraction in coal mines in Kubai coal field.

通过对塔什店矿区地质特征及含煤建造的分析,得出矿区侏罗系含煤地层主要为一套含碎屑岩沉积,属河流、河漫、湖泊及泥炭沼泽相,侏罗系中统塔什店组(J2ts)含煤性较好。建议在本区进行地质勘查工作时,应对矿区内地质特征进行详细分析,加强对矿区沉积环境的研究。建议采用多种勘查手段,工作才能取得预期的地质效果。

通过对阿尔格敏露天煤矿边帮工程地质条件的研究,确定了边坡类型和等效边坡角,分析了对边坡的不利因素,为边坡角的合理确定提供了依据。

通过阐述黑眼泉一带煤矿区的沉积特征,分析其聚煤环境,探讨黑眼泉煤矿的含煤性,得出新疆巴里坤黑眼泉一带具有较好的聚煤环境和稳定的含煤性,对今后其它煤矿勘探工作具有一定的指导意义。

通过对科尔克煤矿区地质资料的分析,阐述了井田地质构造的规律,同时也说明了地质构造对煤层厚度的影响,对今后矿井的开采有一定指导作用。