Reservoir Characteristics and Its Physical Origin of Shale Gas in Coal Measure in the Lower Permian Shanxi Formation in Huainan Coal Field
Received date: 2014-09-17
Revised date: 2014-11-02
Online published: 2015-06-10
Shale gas in coal measures is one of the important types,and the shale in coal measures holds favorable ability of gas accumulation and enrichment potential.It has important significance of research for shale reservoir characteristics in coal measure strata to confirm the coexistence and co-exploration of unconventional gas.As a case of the Lower Permian Shanxi Formation in Huainan Coal Field,the results show that the thickness of the Shanxi Formation shale is about 72m,and the thickness of mudstone accounts for about 25%.The quartz mineral content varies from 29.2% to 36.7% in the mudstone with terrigenous origin.Shanxi Formation contains 0.37% to 8.87% of TOC.The organic matter is moderate mature with RO of 0.83%-1.32% and dominated by type Ⅱ2-kerogen.Porosity of the mudstone measured by Hg intrusion ranges from 0.87% to 4.29%,and pulse permeability ranges from 0.31×10-3μm2 to 0.91×10-3μm2 with an average of 0.54×10-3μm2 .The linear relationship of porosity and pulse permeability is generally better.The development of micro-fracture observed in the mudstone includes micro-fracture extended at the edge of quartz grain,particle internal parallel linear fracture and bent irregular fracture of the internal clay minerals.The micro-porosity dominated by inter-granular and intra-granular pores,with pore size ranging from 2μm to 50nm.The promoting effect of TOC and thermal evolution to micro pore is not obvious,but the mixed-layer minerals of illite and smectite is the main contributor to pores with a large proportion in the composition of clay mineral content.Different types of sedimentary micro-facies could develop different lithic facies,and it is the sedimentary basis of the physical properties of shale gas reservoir from Shanxi Formation in the study area.
XU Hong-jie，HU Bao-lin，LIU Hui-hu，ZHENG Jian-bin，ZHANG Wen-yong，ZHENG Kai-ge . Reservoir Characteristics and Its Physical Origin of Shale Gas in Coal Measure in the Lower Permian Shanxi Formation in Huainan Coal Field[J]. Natural Gas Geoscience, 2015 , 26(6) : 1200 -1210 . DOI: 10.11764/j.issn.1672-1926.2015.06.1200
［1］Cao Daiyong,Yao Zheng,Li Jing.Evaluation status and development trend of unconventional gas in caol measure［J］.Coal Science and Technology,2014,42(1):89-92.［曹代勇,姚征,李靖.煤系非常规天然气评价研究现状与发展趋势［J］.煤炭科学技术,2014,42(1):89-92.］
［2］Zhang Shouren.Proposed effective developing method for the deep coalbed methane［J］.China Coalbed Methane,2011,8(4):18-21.［张守仁.深煤层煤层气开效途径展望［J］.中国煤层气,2011,8(4):18-21.］
［3］Li Xinjing,Lü Zonggang,Dong Dazhong,et al.Geologic controls on accumulation of shale gas in North America［J］.Natural Gas Industry,2009,29(5):27-32.［李新景,吕宗刚,董大忠,等.北美页岩气资源形成的地质条件［J］.天然气工业,2009,29(5):27-32.］
［4］Wang Jie,Qin Jianzhong,Rao Yi,et al.Microstructure and simulation experiments of extracted gas capability in different types of shale［J］.Natural Gas Geoscience,2013,24(4):652-658.［王杰,秦建中,饶丹,等.不同类型页岩富集烃气能力模拟实验及微观结构特征研究［J］.天然气地球科学,2013,24(4):652-658.］
［5］Zhang Jinchuan,Jiang Shengling,Tang Xuan,et al.Accumulation types and resources characteristics of shale gas in China［J］.Natural Gas Industry,2009,29(12):109-114.［张金川,姜生玲,唐玄,等.我国页岩气富集类型及资源特点［J］.天然气工业,2009,29(12):109-114.］
［6］Han Shuangbiao,Zhang Jinchuan,Li Yuxi,et al.The optimum selecting of shale gas well location for geological investigation in Niutitang Formation in Lower Cambrian,northern Guizhou area［J］.Natural Gas Geoscience,2013,24(4):182-187.［韩双彪,张金川,李玉喜,等.黔北地区下寒武统牛蹄塘组页岩气地质调查井位优选［J］.天然气地球科学,2013,24(1):182-187.］
［7］Yang Zhenheng,Tenger,Li Zhiming.An example of shale gas selected marine area model of Lower Cambrian on the Middle and Upper Yangtze［J］.Natural Gas Geoscience,2011,22(1):8-14.［杨振恒,腾格尔,李志明.页岩气勘探选区模型——以中上扬子下寒武统海相地层页岩气勘探评价为例［J］.天然气地球科学,2011,22(1):8-14.］
［8］Wei Xiangfeng,Liu Ruobing,Zhang Tingshan,et al.Micro-pores structure characteristics and development control factors of shale gas reservoir:A case of Longmaxi Formation in XX area of southern Sichuan and northern Guizhou［J］.Natural Gas Geoscience,2013,24(5):1048-1059.［魏祥峰,刘若冰,张廷山,等.页岩气储层微观孔隙结构特征及发育控制因素——以川南—黔北XX地区龙马溪组为例［J］.天然气地球科学,2013,24(5):1048-1059.］
［9］Li Yuxi,Qiao Dewu,Jiang Wenli,et al.Gas content of gas-bearing shale and its geological evaluation summary［J］.Geological Bulletin of China,2011,30(2):308-317.［李玉喜,乔德武,姜文利,等.页岩气含气量和页岩气地质评价综述［J］.地质通报,2011,30(2):308-317.］
［10］Bi He,Jiang Zhengxue,Li Peng,et al.Adsorption characteristic and influence factors of Longmaxi shale in Southeastern Chongqing［J］.Natural Gas Geoscience,2014,25(2):302-310.［毕赫,姜振学,李鹏,等.渝东南地区龙马溪组页岩吸附特征及其影响因素［J］.天然气地球科学,2014,25(2):302-310.］
［11］Wang G C,Ju Y W,Bao Y,et al.Coal-bearing organic shale geological evaluation of Huainan-Huaibei Coalfield,China［J］.Energy & Fuels,2014,28(8):5031-5042.
［12］Wang G C,Ju Y W,Yan Z F,et al.Pore structure characteristics of coal-bearing shale using fluid invasion methods:A case study in the Huainan-Huaibei Coalfield in China.Marine and Petroleum Geology,2015,62:1-13.
［13］National Energy Administration.SY/T 5163-2010,Analysis Method for Clay Minerals and Ordinary Non-clay Minreals in Sedimentary Rocks by the X-ray Diffraction［S］.Beijing:Petroleum Industry Press,2010.
［国家能源局.SY/T 5163-2010,沉积岩中黏土矿物和常见非黏土矿物X-射线衍射分析方法［S］.北京:石油工业出版社,2010.］
［14］Chen Ji,Xiao Xianming.Mineral composition and brittleness of three sets of Paleozoic organic-rich shales in China South area［J］.Journal of China Coal Society,2013,38(5):822-826.［陈吉,肖贤明.南方古生界3套富有机质页岩矿物组成与脆性分析［J］.煤炭学报,2013,38(5):822-826.］
［15］Chen Yanping,Huang Wenhui,Lu Xiaoxian,et al.Shale gas reservoir-forming conditions in Qinshui Basin′s marine-continental facies［J］.Resource & Industries,2013,15(3):68-72.［陈燕萍,黄文辉,陆小霞,等.沁水盆地海陆交互相页岩气成藏条件分析［J］.资源与产业,2013,15(3):68-72.］
［16］Luo Peng,Ji Liming.Reservoir characteristics and potential evaluation of continental shale gas［J］.Natural Gas Geoscience,2013,24(5):1060-1068.［罗鹏,吉利明.陆相页岩气储层特征与潜力评价［J］.天然气地球科学,2013,24(5):1060-1068.］
［17］Loucks R G,Reed R M,Ruppel S C,et al.Morphology,genesis,and distribution of nanometer-scale pores in siliceous mudstones of the Mississippian Barnett Shale［J］.Journal of Sedimentary Research,2009,79(12):848-861.
［18］Loucks R G,Ruppel S C.Mississippian Barnett Shale:Lithofacies and depositional setting of a deep-water shale-gas succession in the Fort Worth Basin,Texas［J］.AAPG Bulletin,2007,91(4):579-601.
［19］Yu Bingsong.Classification and characterization of gas shale pore system［J］.Earth Science Frontiers,2013,20(4):211-220.［于炳松.页岩气储层孔隙分类与表征［J］.地学前缘,2013,20(4):211-220.］
［20］Han Xiangxin,Jiang Xiumin,Wang Dezhong,et al.Effect of combustion process on pore structure of oil shale ash［J］.Journal of Chemical Industry and Engineering,2007,58(5):1296-1300.［韩向新,姜秀民,王德忠,等.燃烧过程对页岩灰孔隙结构的影响［J］.化工学报,2007,58(5):1296-1300.］
［21］Sun Baizhong,Wang Qing,Li Shaohua,et al.Analysis of specific area and porous structure of oil shale and semi-coke［J］.Journal of Power Engineering,2008,28(1):163-167.［孙佰仲,王擎,李少华,等.桦甸油页岩及半焦孔结构的特性分析［J］.动力工程,2008,28(1):163-167.］
［22］Curtis M E,Sondergeld C H,Ambrose R J,et al.Microstructural investigation of gas shales in two and three dimensions using nanometer-scale resolution imaging［J］.AAPG Bulletin,2012,96(4):665-677.
［23］State Economic and Trade Commission.SY/T 5477-2003,The Division of Diagenetic Stages in Clastic Rocks［S］.Beijing:Petroleum Industry Press,2003.［国家经济贸易委员会.SY/T 5477-2003,碎屑岩成岩阶段划分［S］.北京:石油工业出版社,2003.］
［24］Huang Zhenkai,Chen Jianping,Wang Yijun,et al.Pore distribution of source rocks as reavealed by gas adsorption and mercury injection methods:A case study on the first member of the cretaceous Qingshankou Formation in the Songliao Basin［J］.Geological Review,2013,59(3):587-595.［黄振凯,陈建平,王义军,等.利用气体吸附法和压汞法研究烃源岩孔隙分布特征——以松辽盆地白垩系青山口组一段为例［J］.地质论评,2013,59(3):587-595.］
［25］Zhao Xingyuan,He Dongbo.Clay minerals and shale gas［J］.Xinjiang Petroleum Geology,2012,33(6):643-647.［赵杏媛,何东博.黏土矿物与页岩气［J］.新疆石油地质,2012,33(6):643-647.］
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号