盘江矿区月亮田矿煤储层物性差异分布特征及其控制机理Coal Reservoir Physical Property Differences Distribution Features and Control Mechanism in Yueliangtian Coalmine,Panjiang Mining Area
颜智华,高为,鞠玮,王胜宇,钟宇,黄沛铭,胡浩浩
摘要(Abstract):
为了综合分析盘江矿区月亮田矿煤层气勘探开发地质条件与潜力,研究采用多种测试手段,系统分析了该矿煤储层在孔隙度及孔隙结构、渗透性和储层压力在垂向分布的特征与差异。结果表明,盘江矿区月亮田矿二叠系龙潭组煤储层孔隙度较低,小孔体积占明显优势并且比例接近,微孔和小孔比表面积占优势但变化较大,主要发育狭缝状孔和细径广体的墨水瓶状孔。该区煤层渗透率在垂向上的变化较大,且并非为应力主控,受多种地质条件的综合影响。龙潭组煤储层压力属于异常低-异常高压范围,随埋藏深度的增加而增大,推测区内龙潭组煤系地层在垂向上至少存在2个独立含煤层气系统。针对龙潭组煤储层物性垂向分布特征的研究,期望可以为月亮田矿煤层气开发提供新的地质参考。
关键词(KeyWords): 煤储层物性;月亮田矿;煤层气;垂向分布;龙潭组;盘江矿区
基金项目(Foundation): 《贵州省西部煤系气调查评价》(2018-01号)与《六盘水地区煤层气水平井抽采关键技术研究》(黔科合支撑[2020]2Y028号)联合资助
作者(Author): 颜智华,高为,鞠玮,王胜宇,钟宇,黄沛铭,胡浩浩
参考文献(References):
- [1]高弟,秦勇,易同生.论贵州煤层气地质特点与勘探开发战略[J].中国煤炭地质,2009,21(3):20-23.
- [2]Ju W,Yang Z B,Qin Y,et al. Characteristics of in-situ stress state and prediction of the permeability in the Upper Permian coalbed methane reservoir,western Guizhou region,SW China[J]. Journal of Petroleum Science and Engineering,2018(165):199-211.
- [3]刘大锰,李振涛,蔡益栋.煤储层孔-裂隙非均质性及其地质影响因素研究进展[J].煤炭科学技术,2015,43(2):10-15.
- [4]秦勇,熊孟辉,易同生,等.论多层叠置独立含煤层气系统———以贵州织金-纳雍煤田水公河向斜为例[J].地质论评,2008,54(1):65-70.
- [5]金军.黔西松河井田松参1井煤储层物性垂向分布特征[J].煤炭科学技术,2016,44(2):27-32,16.
- [6]吴财芳,姜玮,王蒙,等.黔西多煤层产气潜力及单井高效开采模式[M].北京:科学出版社,2016.
- [7]杨兆彪,秦勇,高弟.黔西比德-三塘盆地煤层群含气系统类型及其形成机理[J].中国矿业大学学报,2011,40(2):215-220.
- [8]胡宝林.鄂尔多斯盆地煤层气储层特征及综合评价[D].北京:中国地质大学(北京),2003.
- [9]姚艳斌,刘大锰,胡宝林,罗文林.地理信息系统在煤层气资源评价中的应用[J].煤炭科学技术,2005,33(12):1-4.
- [10]高为,金军,易同生,等.黔西月亮田矿区YV-1井煤储层孔隙特征研究[J].煤炭工程,2016,48(9):109-112.
- [11]de Boer J H. The shape of capillaries. In:Everett,D H,Stone F S.The Structure and Properties of Porous Materials[M]. Butterworth,London,1958.
- [12]Zoback M D,Barton C A,Brudy M,et al. Determination of stress orientation and magnitude in deep wells[J]. International Journal of Rock Mechanics and Mining Sciences,2003,40(7-8):1049-1076.
- [13]Haimson B C,Cornet F H. ISRM suggested methods for rock stress estimation. Part 3:hydraulic fracturing(HF)and/or hydraulic testing of pre-existing fractures(HTPF)[J]. International Journal of Rock Mechanics and Mining Sciences,2003(40):1011-1020.
- [14]Sing K S,Everett D H,Haul R A W,et al. Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity[J]. Pure and Applied Chemistry,1985,57(4):603-619.
- [15]孟召平,蓝强,刘翠丽,等.鄂尔多斯盆地东南缘地应力、储层压力及其耦合关系[J].煤炭学报,2013,38(1):122-128.
- [16]叶建平,史保生,张春才.中国煤储层渗透性及其主要影响因素[J].煤炭学报,1999,24(2):118-122.
- [17]鞠玮,姜波,秦勇,等.滇东雨旺区块多煤层条件下现今地应力特征及其对煤层气开发的影响[J].煤炭学报,http://kns. cnki. net/kcms/detail/11.2190.TD.20191128.1604.002.html.
- [18]Ju W,Jiang B,Miao Q,et al. Variation of in situ stress regime in coal reservoirs,eastern Yunnan region,South China:Implications for coalbed methane production[J]. AAPG Bulletin,2018,102(11):2283-2303.
- [19]Enever J R E,Henning A. The relationship between permeability and effective stress for Australian coal and its implications with respect to coalbed methane exploration and reservoir modeling[C]. Proceedings of the 1997 International Coalbed Methane Symposium,1997,13-22.