Gas bearing potential and exploration strategy of organic shale in Guangxi

CHEN Jiyu; WANG Ruihu; CEN Wenpan; WANG Laijun; LU Jipu; CHEN Haiwu; ZHANG Meiling; CAO Shufang

doi:10.19388/j.zgdzdc.2023.03.02

2023 Vol. 10, No. 3

Article Contents

Article navigation > Geological Survey of China > 2023 > 10(3): 16-24

Next Article Previous Article

CHEN Jiyu, WANG Ruihu, CEN Wenpan, WANG Laijun, LU Jipu, CHEN Haiwu, ZHANG Meiling, CAO Shufang. 2023. Gas bearing potential and exploration strategy of organic shale in Guangxi. Geological Survey of China, 10(3): 16-24. doi: 10.19388/j.zgdzdc.2023.03.02

Citation:

CHEN Jiyu, WANG Ruihu, CEN Wenpan, WANG Laijun, LU Jipu, CHEN Haiwu, ZHANG Meiling, CAO Shufang. 2023. Gas bearing potential and exploration strategy of organic shale in Guangxi. Geological Survey of China, 10(3): 16-24. doi: 10.19388/j.zgdzdc.2023.03.02

Gas bearing potential and exploration strategy of organic shale in Guangxi

1. Geological Survey Institute of Guangxi Zhuang Autonomous Region, Guangxi Nanning 530023, China;
2. Bureau of Geological and Mineral Exploration and Development of Guangxi Zhuang Autonomou Region, Guangxi Nanning 530023, China

Received Date: 21 September 2022

Abstract

Abstract

In order to deepen the understanding of shale gas-bearing potential in Guangxi, the authors in this research analyzed the gas-bearing potential of key organic-rich shale layers in Guangxi and the controlling factors of shale adsorbed methane gas volume, and discussed the favorable distribution area and exploration countermeasures of gas-bearing potential layers, through shale isothermal adsorption experiment method combined with TOC content, organic matter type, vitrinite reflectance (R_O), whole rock and clay X-ray diffraction analysis and testing. The study shows that the shale of Luzhai Formation has the best gas potential, and the average saturated adsorption capacity is 2.87 m³/t, followed by Luofu Formation, Qingxi Formation, Shengping Formation, and Shipao Formation. The areas with the best shale adsorption performance are Shanglin and Nandan in Luofu Formation, Nandan-Liuzhou and Mashan Zhoulu in Luzhai Formation, and Shangsi in Shipao Formation. The main factors controlling the methane gas adsorbed by shale in Guangxi include TOC content, organic matter type, R_O, pore volume of mesopore and micropore, content of illite /smectite mixed layers, and caprock conditions, but the main controlling factors of different shale layers are slightly different. In general, the exploration evaluation should focus on finding out the sedimentary microfacies, TOC content of shale, clay mineral types and relative content, structure and caprock preservation conditions. For areas with strong structural activity and high R_O, the exploration principle of “looking for static in motion and selecting low from high” should be followed. The study aims to guide the exploration and development of shale gas in Guangxi for a new breakthrough.
- shale /
- isothermal adsorption /
- adsorption performance /
- Luzhai Formation /
- Luofu Formation /
- exploration strategy

FullText(HTML)

References

[1]	Montgomery S L,Jarvie D M,Bowker K A,et al.Mississippian Barnett shale,Fort worth Basin,north-central Texas:Gas-shale play with multi-trillion cubic foot potential[J].AAPG Bulletin,2005,89(2):155-175. Google Scholar
[2]	Lu X C,Li F C,Watson A T.Adsorption measurements in Devonian shales[J].Fuel,1995,74(4):599-603. Google Scholar
[3]	杨文新,李继庆,苟群芳.四川盆地焦石坝地区页岩吸附特征室内实验[J].天然气地球科学,2017,28(9):1350-1355. Google Scholar
[4]	Yang W X,Li J Q,Gou Q F.Experiment study on shale adsorption properties for Jiaoshiba shale,Sichuan Basin[J].Natural Gas Geoscience,2017,28(9):1350-1355. Google Scholar
[4]	张寒,朱炎铭,夏筱红,等.页岩中有机质与黏土矿物对甲烷吸附能力的探讨[J].煤炭学报,2013,38(5):812-816. Google Scholar
[6]	Zhang H,Zhu Y M,Xia X H,et al.Comparison and explanation of the absorptivity of organic matters and clay minerals in shales[J].Journal of China Coal Society,2013,38(5):812-816. Google Scholar
[5]	夏大平,王振,马俊强.煤层气与页岩气吸附差异性分析[J].煤田地质与勘探,2015,43(6):36-38,44. Google Scholar
[8]	Xia D P,Wang Z,Ma J Q.Analyses on the adsorption difference between coalbed methane and shale gas[J].Coal Geology & Exploration,2015,43(6):36-38,44. Google Scholar
[6]	闫建萍,张同伟,李艳芳,等.页岩有机质特征对甲烷吸附的影响[J].煤炭学报,2013,38(5):805-811. Google Scholar
[10]	Yan J P,Zhang T W,Li Y F,et al.Effect of the organic matter characteristics on methane adsorption in shale[J].Journal of China Coal Society,2013,38(5):805-811. Google Scholar
[7]	王祥,王瑞湖,张能,等.桂中坳陷环江地区高—过成熟富有机质页岩储集性能研究及其对含气性的影响[J].矿产与地质,2020,34(6):1078-1083,1128. Google Scholar
[12]	Wang X,Wang R H,Zhang N,et al.Study on reservoir performance of high-over-mature organic-rich shale in Huanjiang area of Central Guangxi Depression and its influence on gas bearing property[J].Minerals and Geology,2020,34(6):1078-1083,1128. Google Scholar
[8]	Gasparik M,Ghanizadeh A,Bertier P,et al.High-pressure methane sorption isotherms of black shales from the Netherlands[J].Energy & Fuels,2012,26(8):4995-5004. Google Scholar
[9]	吉利明,邱军利,夏燕青,等.常见黏土矿物电镜扫描微孔隙特征与甲烷吸附性[J].石油学报,2012,33(2):249-256. Google Scholar
[15]	Ji L M,Qiu J L,Xia Y Q,et al.Micro-pore characteristics and methane adsorption properties of common clay minerals by electron microscope scanning[J].Acta Petrolei Sinica,2012,33(2):249-256. Google Scholar
[10]	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. Google Scholar
[11]	刘洪林,王红岩.中国南方海相页岩吸附特征及其影响因素[J].天然气工业,2012,32(9):5-9. Google Scholar
[18]	Liu H L,Wang H Y.Adsorptivity and influential factors of marine shales in South China[J].Natural Gas Industry,2012,32(9):5-9. Google Scholar
[12]	广西壮族自治区地质调查院.广西页岩气资源潜力调查报告[R].2019:100-203. Google Scholar
[20]	Geological Survey Institute of Guangxi Zhuang Autonomous Region.Investigation Report on Shale Gas Resource Potential in Guangxi[R].2019:100-203. Google Scholar
[13]	广西壮族自治区地质矿产局.广西壮族自治区区域地质志[M].北京:地质出版社,1985:44-292. Google Scholar
[22]	Bureau of Geology and Mineral Resources of Guangxi Zhuang Autonomous Region.Regional Geology of Guangxi Zhuang Autonomous Region[M].Beijing:Geology Press,1985:44-292. Google Scholar
[14]	岑文攀,王瑞湖,徐海,等.广西页岩气勘查现状、存在问题及建议[J].南方国土资源,2018(3):40-43. Google Scholar
[24]	Cen W P,Wang R H,Xu H,et al.Present situation,existing problems and suggestions of shale gas exploration in Guangxi[J].Southern Land and Resources,2018(3):40-43. Google Scholar
[15]	黄羚,徐政语,王鹏万,等.桂中坳陷上古生界页岩气资源潜力分析[J].中国地质,2012,39(2):497-506. Google Scholar
[26]	Huang L,Xu Z Y,Wang P W,et al.An analysis of resource potential of Upper Paleozoic shale gas in Guizhong depression[J].Geo-logy of China,2012,39(2):497-506. Google Scholar
[16]	王鹏万,陈子炓,贺训云,等.桂中坳陷泥盆系页岩气成藏条件与有利区带评价[J].石油与天然气地质,2012,33(3):353-363. Google Scholar
[28]	Wang P W,Chen Z L,He X Y,et al.Shale gas accumulation conditions and play evaluation of the Devonian in Guizhong depression[J].Oil and Gas Geology,2012,33(3):353-363. Google Scholar
[17]	刘震,孙迪,李潍莲,等.沉积盆地地层孔隙动力学研究进展[J].石油学报,2016,37(10):1193-1215. Google Scholar
[30]	Liu Z,Sun D,Li W L,et al.Advances in research on stratigraphic porodynamics of sedimentary basins[J].Acta Petrolei Sinica,2016,37(10):1193-1215. Google Scholar