Advanced Search
Volume 41 Issue 3
. 
Turn off MathJax
Article Contents
Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2019  >  41(3): 333-340
WANG Qiang, WEI Xiangfeng, WEI Fubin, YAN Jihong, WAN Li. Overpressure in shale gas reservoirs of Wufeng-Longmaxi formations, Fuling area, southeastern Sichuan Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(3): 333-340. doi: 10.11781/sysydz201903333
Citation: WANG Qiang, WEI Xiangfeng, WEI Fubin, YAN Jihong, WAN Li. Overpressure in shale gas reservoirs of Wufeng-Longmaxi formations, Fuling area, southeastern Sichuan Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(3): 333-340. doi: 10.11781/sysydz201903333
shu

Overpressure in shale gas reservoirs of Wufeng-Longmaxi formations, Fuling area, southeastern Sichuan Basin

doi: 10.11781/sysydz201903333

  • SINOPEC Exploration Branch Company, Chengdu, Sichuan 610041, China

  • Received Date: 2019-02-19
  • Rev Recd Date: 2019-04-19
  • Publish Date: 2019-05-28
    Abstract
  • There commonly exists overpressure in shale gas reservoirs in the Upper Ordovician Wufeng Formation-Lower Silurian Longmaxi Formations in marine strata in South China. Some typical wells in the Fuling Shale Gas Field were chosen to study systematically to reveal how the overpressure does on shale gas reservoirs. Overpressure is the direct shows of favorable preservation conditions for shale gas. Pressure increases when hydrocarbon generates from organic matter in thermal evolution, which is the main cause for abnormal high pressure in the region. Overpressure exists in all high yield intervals for shale gas in the Longmaxi Formation in Jiaoshiba of Fuling area. The shale reservoirs have high porosity and high gas content. The effect of overpressure on shale gas reservoirs was concluded. On the one hand, overpressure can slow down the effective stress on rock skeleton, so that the shale reservoirs preserve a relatively higher porosity, and overpressure can form shale overpressure micro-cracks, improving the seepage capacity of shale reservoirs. Overpressure indicates for high formation energy, high free gas content, and better gas content in shale gas reservoirs. On the other hand, overpressure reduces the effective stress on shale reservoirs, and the development of overpressure micro-cracks is conducive to shale fracturing.

     

    • FullText(HTML)
  • loading
    • References(27)
  • [1]
    郭彤楼.涪陵页岩气田发现的启示与思考[J].地学前缘,2016,23(1):29-43.

    GUO Tonglou.Discovery and characteristics of the Fuling shale gas field and its enlightenment and thinking[J].Earth Science Frontiers,2016,23(1):29-43.
    [2]
    郭旭升,胡东风,文治东,等.四川盆地及周缘下古生界海相页岩气富集高产主控因素:以焦石坝地区五峰组-龙马溪组为例[J].中国地质,2014,41(3):893-901.

    GUO Xusheng,HU Dongfeng,WEN Zhidong,et al.Major factors controlling the accumulation and high productivity in marine shale gas in the Lower Paleozoic of Sichuan Basin and its periphery:a case study of the Wufeng-Longmaxi Formation of Jiaoshiba area[J].Geology in China,2014,41(3):893-901.
    [3]
    郭彤楼,刘若冰.复杂构造区高演化程度海相页岩气勘探突破的启示:以四川盆地东部盆缘JY1井为例[J].天然气地球科学,2013,24(4):643-651.

    GUO Tonglou,LIU Ruobing.Implications from marine shale gas exploration break-through in complicated structural area at high thermal stage:taking Longmaxi Formation in well JY1 as an example[J].Natural Gas Geoscience,2013,24(4):643-651.
    [4]
    魏志红,魏祥峰.页岩不同类型孔隙的含气性差异:以四川盆地焦石坝地区五峰组-龙马溪组为例[J].天然气工业,2014,34(6):37-41.

    WEI Zhihong,WEI Xiangfeng.Comparison of gas-bearing pro-perty between different pore types of shale:a case from the Upper Ordovician Wufeng and Longmaxi Fms in the Jiaoshiba area,Sichuan Basin[J].Natural Gas Industry,2014,34(6):37-41.
    [5]
    王志刚.涪陵焦石坝地区页岩气水平井压裂改造实践与认识[J].石油与天然气地质,2014,35(3):425-430.

    WANG Zhigang.Practice and cognition of shale gas horizontal well fracturing stimulation in Jiaoshiba of Fuling area[J].Oil & Gas Geology,2014,35(3):425-430.
    [6]
    刘若冰.中国首个大型页岩气田典型特征[J].天然气地球科学,2015,26(8):1488-1498.

    LIU Ruobing.Typical features of the first giant shale gas field in China[J].Natural Gas Geoscience,2015,26(8):1488-1498.
    [7]
    郭彤楼,张汉荣.四川盆地焦石坝页岩气田形成与富集高产模式[J].石油勘探与开发,2014,41(1):28-36.

    GUO Tonglou,ZHANG Hanrong.Formation and enrichment mode of Jiaoshiba Shale Gas Field,Sichuan Basin[J].Petroleum Exploration and Development,2014,41(1):28-36.
    [8]
    郭旭升.南方海相页岩气“二元富集”规律:四川盆地及周缘龙马溪组页岩气勘探实践认识[J].地质学报,2014,88(7):1209-1218.

    GUO Xusheng.Rules of two-factor enrichment for marine shale gas in southern China:understanding from the Longmaxi Formation shale gas in Sichuan Basin and its surrounding area[J].Acta Geologica Sinica,2014,88(7):1209-1218.
    [9]
    胡东风,张汉荣,倪凯,等.四川盆地东南缘海相页岩气保存条件及其主控因素[J].天然气工业,2010,34(6):17-23.

    HU Dongfeng,ZHANG Hanrong,NI Kai,et al.Main controlling factors for gas preservation conditions of marine shales in southeastern margins of the Sichuan Basin[J].Natural Gas Industry,2010,34(6):17-23.
    [10]
    LUO Xiaorong,WANG Zhaoming,ZHANG Liqiang,et al.Overpressure generation and evolution in a compressional tectonic setting,the southern margin of Junggar Basin,northwestern China[J].AAPG Bulletin,2007,91(8):1123-1139.
    [11]
    TINGAY M R P,HILLIS R R,SWARBRICK R E,et al.Origin of overpressure and pore-pressure prediction in the Baram Province,Brunei[J].AAPG Bulletin,2009,93(1):51-74.
    [12]
    罗晓容.数值盆地模拟方法在地质研究中的应用[J].石油勘探与开发,2000,27(2):6-10.

    LUO Xiaorong.The application of numerical basin modeling in geological studies[J].Petroleum Exploration and Development,2000,27(2):6-10.
    [13]
    柳广弟.石油地质学[M].4版.北京:石油工业出版社,2009. LIU Guangdi.The geology of petroleum[M].4th ed.Beijing:Petroleum Industry Press,2009.
    [14]
    王玉满,董大忠,李建忠,等.川南下志留统龙马溪组页岩气储层特征[J].石油学报,2012,33(4):551-561.

    WANG Yuman,DONG Dazhong,LI Jianzhong,et al.Reservoir characteristics of shale gas in Longmaxi Formation of the Lower Silurian,southern Sichuan[J].Acta Petrolei Sinica,2012,33(4):551-561.
    [15]
    刘若冰.超压对川东南地区五峰组-龙马溪组页岩储层影响分析[J].沉积学报,2015,33(4):817-827.

    LIU Ruobing.Analyses of influences on shale reservoirs of Wufeng-Longmaxi Formation by overpressure in the southeastern part of Sichuan Basin[J].Acta Sedimentologica Sinica,2015,33(4):817-827.
    [16]
    RAMDHAN A M,GOULTY N R.Overpressure and mudrock compaction in the Lower Kutai Basin,Indonesia:a radical reappraisal[J].AAPG Bulletin,2011,95(10):1725-1744.
    [17]
    管全中,董大忠,芦慧,等.异常高压对四川盆地龙马溪组页岩气藏的影响[J].新疆石油地质,2015,34(1):55-60.

    GUAN Quanzhong,DONG Dazhong,LU Hui,et al.Influences of abnormal high pressure on Longmaxi shale gas reservoir in Sichuan Basin[J].Xinjiang Petroleum Geology,2015,34(1):55-60.
    [18]
    汪泽成,赵文智,张林,等.四川盆地构造层序与天然气勘探[M].北京:地质出版社,2002. WANG Zecheng,ZHAO Wenzhi,ZHANG Lin,et al.Tectonic sequence and natural gas exploration in Sichuan Basin[M].Beijing:Geological Publishing House,2002.
    [19]
    徐国盛,刘树根,李仲东,等.四川盆地天然气成藏动力学[M].北京:地质出版社,2005. XU Guosheng,LIU Shugen,LI Zhongdong,et al.Dynamics of natural gas accumulations in Sichuan Basin,China[M].Beijing:Geological Publishing House,2005.
    [20]
    郭旭升,李宇平,刘若冰,等.四川盆地焦石坝地区龙马溪组页岩微观孔隙结构特征及其控制因素[J].天然气工业,2014,34(6):9-16.

    GUO Xusheng,LI Yuping,LIU Ruobing,et al.Characteristics and controlling factors of micro-pore structures of Longmaxi Shale Play in the Jiaoshiba area,Sichuan Basin[J].Natural Gas Industry,2014,34(6):9-16.
    [21]
    刘友祥,俞凌杰,张庆珍,等.川东南龙马溪组页岩的矿物组成与微观储集特征研究[J].石油实验地质,2015,37(3):328-333.

    LIU Youxiang,YU Lingjie,ZHANG Qingzhen,et al.Mineral composition and microscopic reservoir features of Longmaxi shales in southeastern Sichuan Basin[J].Petroleum Geology and Experiment,2015,37(3):328-333.
    [22]
    卢龙飞,秦建中,申宝剑,等.川东南涪陵地区五峰-龙马溪组硅质页岩的生物成因及其油气地质意义[J].石油实验地质,2016,38(4):460-465.

    LU Longfei,QIN Jianzhong,SHEN Baojian,et al.Biogenic origin and hydrocarbon significance of siliceous shale from the Wufeng-Longmaxi formations in Fuling area,southeastern Sichuan Basin[J].Petroleum Geology & Experiment,2016,38(4):460-465.
    [23]
    丁文龙,张博闻,李泰明.古龙凹陷泥岩非构造裂缝的形成[J].石油与天然气地质,2003,24(1):50-54.

    DING Wenlong,ZHANG Bowen,LI Taiming.Formation of non-tectonic fractures in mudstones in Gulong Depression[J].Oil & Gas Geology,2003,24(1):50-54.
    [24]
    《页岩气地质与勘探开发实践丛书》编委会.北美地区页岩气勘探开发新进展[M].北京:石油工业出版社,2009. Editorial Committee of “Shale gas geology and exploration and development practice series”.New progress of shale gas exploration and development in North America[M].Beijing:Petroleum Industry Press,2009.
    [25]
    GLUYAS J,CADE C A.Prediction of porosity in compacted sands[M]//KUPECZ J A,GLUYAS J,BLOCH S.Reservoir quality prediction in sandstones and carbonates.Tulsa:AAPG,1997:19-27.
    [26]
    BLOCH S,LANDER R H,BONNELL L.Anomalously high porosity and permeability in deeply buried sandstone reservoirs:origin and predictability[J].AAPG Bulletin,2002,86(2):301-328.
    [27]
    董大忠,邹才能,李建忠,等.页岩气资源潜力与勘探开发前景[J].地质通报,2011,30(2/3):324-336. DONG Dazhong,ZOU Caineng,LI Jianzhong,et al.Resource potential,exploration and development prospect of shale gas in the whole world[J].Geological Bulletin of China,2011,30(2/3):324-336.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Citation
    XML
    PDF-CN

    Article Metrics

    Article views (794) PDF downloads(169) Cited by()
    Proportional views
    Related

    Website Copyright © Wuxi Research Institute of Petroleum Geology, SINOPEC 苏ICP备15009037号 苏公网安备32021102000780号

    Address：No. 2060, Lihu Avenue, Wuxi, Jiangsu   (214126) Tel：0510-68787204，68787203 Fax：0510-68787113 Email：sysydz.syky@sinopec.com

    Supported by: Beijing Renhe Information Technology Co. Ltd    

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return