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鄂西建始地区页岩储层特征及含气性研究
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  • 英文篇名:Research on the reservoir characteristics and gas-bearing potential of shale in Jianshi,western Hubei Province
  • 作者:仇秀梅 ; 刘亚东 ; 董学林
  • 英文作者:QIU Xiu-mei;LIU Ya-dong;DONG Xue-lin;Hubei Geological Research Laboratory;Hubei Urban Construction Vocational and Technological College;
  • 关键词:页岩气 ; 储层特征 ; 有机地球化学 ; 含气性 ; 相关性 ; 建始地区
  • 英文关键词:shale gas;;reservoir characteristics;;organic geochemistry;;gas content;;relativity;;Jianshi area
  • 中文刊名:YSKW
  • 英文刊名:Acta Petrologica et Mineralogica
  • 机构:湖北省地质实验测试中心;湖北城市建设职业技术学院;
  • 出版日期:2019-05-25
  • 出版单位:岩石矿物学杂志
  • 年:2019
  • 期:v.38;No.179
  • 基金:湖北省自然资源厅科技项目(ETZ2017A01)~~
  • 语种:中文;
  • 页:YSKW201903006
  • 页数:10
  • CN:03
  • ISSN:11-1966/P
  • 分类号:81-90
摘要
通过对鄂西建始地区页岩储层特征、有机地球化学特征及含气性分析,初步探讨了含气性的相关影响因素。结果表明,储层矿物以石英和粘土矿物为主,孔隙类型主要为有机质孔、矿物溶蚀孔、矿物粒间孔,岩石孔隙度为0. 2%~4. 5%,渗透率平均值为0. 081 0×10~(-3)μm~2,属低孔、特低渗储层;储层具有高有机质丰度、高热演化程度特征,TOC含量平均值为7. 63%,R_o平均值为3. 29%,有机质类型以Ⅱ型干酪根为主;现场解析法测得X井大隆组、龙潭组、孤峰组页岩具有较高的含气量,平均值为1. 32 m~3/t,含气量与有机质丰度、有机质成熟度、孔隙度呈正相关关系,与粘土矿物含量呈弱的正相关关系。该研究可以为鄂西建始地区页岩气的后续勘探开发提供依据。
        The reservoir features,organic geochemical characteristics and gas-bearing property of the shale from Jianshi area in western Hubei Province were studied,and the factors associated with gas content of the shale were preliminary discussed. Some conclusions have been reached: ① Quartz and clay minerals seem to be the major minerals in the shale,the pores of the reservoir are mainly organic pores,mineral dissolution pores and intergranular pores,and the reservoirs are characterized by low porosity and ultra-low permeability with a rock porosity of0. 2% ~ 4. 5% and a permeability of 0. 081 0 × 10~(-3)μm~2; ② They are high in organic matter and thermal evolution degree,and have an average TOC content of 7. 63% and an average R_o value of 3. 29%,with the organic matter belonging mainly to type Ⅱ; ③ The gas content of the shale is higher with an average of 1. 32 m~3/t,which exhibits a positive correlation with porosity,organic matter abundance and maturity,and a weak positive correlation with the content of clay minerals. The research on shale gas reservoir could provide certain reference for the subsequent shale gas exploration and development of Jianshi in western Hubei Province.
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