桂北地区下石炭统鹿寨组页岩储层孔隙特征及评价

doi:10.13809/j.cnki.cn32-1825/te.2022.03.005

Abstract

Abstract:

The upper Paleozoic Marine shale in middle Guangxi Depression, namely Guizhong Depression, has experienced complex tectonic evolution and thermal evolution. As the main production layer of shale gas, the microscopic pore structure characterization and reservoir pore evaluation of the shale in lower Carboniferous need to be studied urgently. Focus on the Lower Carboniferous Luzhai Formation shale reservoir in the northern Guizhong Depression, the material composition and reservoir pores of the shale are characterized and evaluated in detail by rock thin section, scanning electron microscope, Xray diffraction, porosity and isothermal adsorption tests on samples both from fields and cores. The results show that the TOC in the shale of Luzhai Formation is 0.4 % ~ 6.6 %. The organic matter is in the stage of high mature to over-mature thermal evolution. The content of brittle minerals such as quartz is high, with a good fracturing ability. The shale in Luzhai Formation, with an average porosity of 2.91 % and an average permeability of 0.007 9 ×10^-3μm², is a kind of low porosity, ultra-low permeability and good breakthrough pressure shale gas reservoir. There are five types of pores in the shale reservoir: the residual intergranular pore, intergranular pore, intragranular dissolved pore, clay minerals interlayer pore and organic pore. The main contributors are the clay minerals interlayer pores, the organic pores and the pyrite intergranular pores. The aperture rangs from 17 nm to 65 nm, most of which are microporous or mesoporous with the scale less than 50 nm. The connectivity between the pores is poor and there is a certain connectivity inside the pores.

Key words: shale, reservoir evaluation, microscopic pores, Lower Carboniferous, middle Guangxi Depression（Guizhong Depression）

CLC Number:

TE122

TAO Jinyu,SHEN Baojian,HU Zongquan,PAN Anyang. Pore characteristics and evaluation of shale reservoir in Lower Carboniferous Luzhai Formation, northern part of middle Guangxi Depression[J].Petroleum Reservoir Evaluation and Development, 2022, 12(3): 437-444.

Figures/Tables 11

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Table 1

Fig. 7

Fig. 8

Table 2

Fig. 9

References 28

[1]	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. doi: 10.1306/11020606059
[2]	ABOUELRESH M O, SLATT R M. Shale depositional processes: Example from the Paleozoic Barnett Shale, Fort Worth Basin, Texas, USA[J]. Open Geosciences, 2011, 3(4): 398-409.
[3]	NEWPORT L P, APLIN A C, GLUYAS J G, et al. Geochemical and lithological controls on a potential shale reservoir: Carboniferous Holywell Shale, Wales[J]. Marine and Petroleum Geology, 2016, 71: 198-210. doi: 10.1016/j.marpetgeo.2015.11.026
[4]	刘丽, 闵令元, 孙志刚, 等. 济阳坳陷页岩油储层孔隙结构与渗流特征[J]. 油气地质与采收率, 2021, 28(1):106-114.
	LIU Li, MIN Lingyuan, SUN Zhigang, et al. Pore structure and percolation characteristics in shale oil reservoir of Jiyang Depression[J]. Petroleum Geology and Recovery Efficiency, 2021, 28(1):106-114.
[5]	李站伟, 陈世达, 陶树, 等. 黔西-滇东地区煤岩吸附-解吸特征及其对多层合采的指示意义[J]. 油气地质与采收率, 2021, 28(1):125-131.
	LI Zhanwei, CHEN Shida, TAO Shu, et al. CBM adsorption-desorption characteristics of coal in western Guizhou-eastern Yunnan region and its significance to commingled production[J]. Petroleum Geology and Recovery Efficiency, 2021, 28(1):125-131.
[6]	姚双宏, 李学元, 李澎, 等. 巨鹿地区石炭系—二叠系富有机质页岩孔隙结构特征及微观非均质性[J]. 特种油气藏, 2020, 27(4):41-48.
	YAO Shuanghong, LI Xueyuan, LI Peng, et al. Pore structure characterization and micro-heterogeneity of carboniferous-permian organic-rich Shalein Julu[J]. Special Oil & Gas Reservoirs, 2020, 27(4): 41-48.
[7]	赵迪斐, 郭英海, 朱炎铭, 等. 深层海相页岩储层精准评价与开发选层的评价体系问题评述[J]. 非常规油气, 2022, 9(2):1-7.
	ZHAO Difei, GUO Yinghai, ZHU Yanming, et al. Comments on the evaluation system of accurate evaluation and selection of deep marine shale reservoirs[J]. Unconventional Oil & Gas, 2022, 9(2): 1-7.
[8]	李冠霖, 郭英海, 赵迪斐. 渝西地区龙马溪组下部页岩储层发育特征及其影响因素——以重庆綦江观音桥剖面为例[J]. 非常规油气, 2022, 9(2):15-25.
	LI Guanlin, GUO Yinghai, ZHAO Difei. Development characteristics and influencing factors of shale reservoir in the lower Longmaxi Formation in western Chongqing——Take Guanyinqiao section in Qijiang, Chongqing as an example[J]. Unconventional Oil & Gas, 2022, 9(2): 15-25.
[9]	兰叶芳, 吴海枝, 任传建, 等. 黔西北燕子口地区五峰组—龙马溪组泥页岩储层特征[J]. 油气地质与采收率, 2021, 28(1):115-124.
	LAN Yefang, WU Haizhi, REN Chuanjian, et al. Shale reservoir characteristics of Wufeng-Longmaxi Formation in Yanzikou area, northwestern Guizhou[J]. Petroleum Geology and Recovery Efficiency, 2021, 28(1): 115-124.
[10]	周雯, 姜振学, 仇恒远, 等. 桂中坳陷下石炭统鹿寨组页岩气成藏条件和有利区预测[J]. 石油学报, 2019, 40(7):798-812.
	ZHOU Wen, JIANG Zhenxue, QIU Hengyuan, et al. Shale gas accumulation conditions and prediction of favorable areas for the Lower Carboniferous Luzhai Formation in Guizhong depression[J]. Acta Petrolei Sinica, 2019, 40(7): 798-812.
[11]	贺训云, 姚根顺, 贺晓苏, 等. 桂中坳陷泥盆系烃源岩发育环境及潜力评价[J]. 石油学报, 2011, 32(2):89-95.
	HE Xunyun, YAO Genshun, HE Xiaosu, et al. An evaluation of depositional environment and potential of Devonian source rocks in Guizhong Depression[J]. Acta Petrolei Sinica, 2011, 32(2): 89-95.
[12]	毛佩筱, 王星星, 吴凯凯, 等. 桂中坳陷西北部下石炭统岩关组泥页岩储层特征研究:以环页1井为例[J]. 地质科技情报, 2018, 37(3):169-176.
	MAO Peixiao, WANG Xingxing, WU Kaikai, et al. Characteristics of shale gas reservoir in the Lower Carboniferous Yanguan Formation, northwestern Guizhong Depression: A case study of Well Huanye 1[J]. Geological Science and Technology Information, 2018, 37(3): 169-176.
[13]	蒋裕强, 付永红, 谢军, 等. 海相页岩气储层评价发展趋势与综合评价体系[J]. 天然气工业, 2019, 39(10):1-9.
	JIANG Yuqiang, FU Yonghong, XIE Jun, et al. Development trend of marine shale gas reservoir evaluation and a suitable comprehensive evaluation system[J]. Natural Gas Industry, 2019, 39(10): 1-9.
[14]	胡东风, 魏志红, 刘若冰, 等. 桂中坳陷下石炭统黑色页岩发育特征及页岩气勘探潜力[J]. 天然气工业, 2018, 38(10):28-37.
	HU Dongfeng, WEI Zhihong, LIU Ruobing, et al. Development characteristics and shale gas exploration potential of the Lower Carboniferous black shale in the Guizhong Depression[J]. Natural Gas Industry, 2018, 38(10): 28-37.
[15]	陈粤, 黄文芳, 梁裕平, 等. 广西鹿寨地区鹿寨组一段黑色页岩特征及沉积环境分析[J]. 矿产与地质, 2017, 31(3):605-612.
	CHEN Yue, HUANG Wenfang, LIANG Yuping, et al. Analysis on black shale feature and depositional environment of the first member of Luzhai Formation, Luzhai area of Guangxi[J]. Mineral Resources and Geology, 2017, 31(3): 605-612.
[16]	于炳松. 页岩气储层的特殊性及评价思路和内容[J]. 地学前缘, 2012, 19(3):252-258.
	YU Bingsong. Particularity of shale gas reservoir and its evaluation[J]. Earth Science Frontiers, 2012, 19(3): 252-258.
[17]	姜涛, 金之钧, 刘光祥, 等. 四川盆地元坝地区自流井组页岩储层孔隙结构特征[J]. 石油与天然气地质, 2021, 42(4):909-918.
	JIANG Tao, JIN Zhijun, LIU Guangxiang, et al. Pore structure characteristics of shale reservoirs in Ziliujing Formation of Yuanba area, Sichuan Basin[J]. Oil and Gas Geology, 2021, 42(4): 909-918.
[18]	CAO T T, SONG Z G, WANG S B, et al. Characterizing the pore structure in the Silurian and Permian shales of the Sichuan Basin, China[J]. Marine and Petroleum Geology, 2015, 61: 140-150. doi: 10.1016/j.marpetgeo.2014.12.007
[19]	胡宗全, 杜伟, 彭勇民, 等. 页岩微观孔隙特征及源-储关系——以川东南地区五峰组-龙马溪组为例[J]. 石油与天然气地质, 2015, 36(6):1001-1008.
	HU Zongquan, DU Wei, PENG Yongmin, et al. Microscopic pore characteristics and the source-reservoir relationship of shale: A case study from the Wufeng and Longmaxi Formations in Southeast Sichuan Basin[J]. Oil and Gas Geology, 2015, 36(6): 1001-1008.
[20]	胡宗全, 王濡岳, 刘忠宝, 等. 四川盆地下侏罗统陆相页岩气源储特征及耦合评价[J]. 地学前缘, 2021, 28(1):261-272.
	HU Zongquan, WANG Ruyue, LIU Zhongbao, et al. Source-reservoir characteristics and coupling evaluation of lacustrine shale gas in the Lower Jurassic, Sichuan Basin[J]. Earth Science Frontiers, 2021, 28(1): 261-272.
[21]	毛佩筱. 桂中坳陷及周缘上古生界海相页岩气成藏特征分析[D]. 杭州: 浙江大学, 2018.
	MAO Peixiao. Marine shale gas accumulation characteristics of Upper Paleozoic in Guizhong Depression and its periphery[D]. Hangzhou: Zhejiang University, 2018.
[22]	张本杰, 秦琴, 刘甲, 等. 黔西南晴页2井旧司组页岩特征及勘探意义[J]. 天然气技术与经济, 2016, 10(4):19-22.
	ZHANG Benjie, QIN Qin, LIU Jia, et al. Shale Characteristics and prospecting significance of Jiusi formation for Qingye 2 Well, SW Guizhou Province[J]. Natural Gas Technology and Economy, 2016, 10(4): 19-22.
[23]	卢树藩, 何犇, 杜胜江. 黔南代页1井下石炭统打屋坝组页岩气地质条件及勘探前景[J]. 中国地质调查, 2016, 3(4):6-11.
	LU Shufan, HE Ben, DU Shengjiang. Geological conditions and exploration prospect of shale gas in Dawuba Formation of Lower Carboniferous of Daiye-1 well in southern Guizhou Province[J]. Geological Survey of China, 2016, 3(4): 6-11.
[24]	安亚运, 符宏斌, 陈厚国, 等. 黔南下石炭统打屋坝组页岩气储层物性特征及控制因素——以长页1井储层为例[J]. 贵州地质, 2015, 32(3):21-29.
	AN Yayun, FU Hongbin, CHEN Houguo, et al. Reservoir property and control factors of shale gas of Dawuba Formation, Lower Carboniferous in South Guizhou[J]. Guizhou Geology, 2015, 32(3): 21-29.
[25]	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, 6(3):40-43.
	CEN Wenpan, WANG Ruihu, XU Hai, et al.. Current situation, existing problems and suggestions of shale gas exploration in Guangxi[J]. Nanfang Guotu Ziyuan, 2018, 6(3): 40-43.
[26]	姜振学, 唐相路, 李卓, 等. 川东南地区龙马溪组页岩孔隙结构全孔径表征及其对含气性的控制[J]. 地学前缘, 2016, 23(2):126-134.
	JIANG Zhenxue, TANG Xianglu, LI Zhuo, et al. The whole-aperture pore structure characteristics and its effect on gas content of the Longmaxi Formation shale in the southeastern Sichuan basin[J]. Earth Science Frontiers, 2016, 23(2): 126-134.
[27]	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: 665-677. doi: 10.1306/08151110188
[28]	蒋裕强, 董大忠, 漆麟, 等. 页岩气储层的基本特征及其评价[J]. 天然气工业, 2010, 30(10):7-12.
	JIANG Yuqiang, DONG Dazhong, QIN Lin, et al. Basic features and evaluation of shale gas reservoirs[J]. Natural Gas Industry, 2010, 30(10): 7-12.

井	层位	孔隙度（%）	渗透率（10^-6μm²）	出处
QY2井	C₁	2.36	9.1	文献[22]
DY1井	C₁	4.96		文献[23]
CY1井	C₁	1.82	3.3	文献[24]
HY1井	C₁	4.49	18.7	文献[12]
DY2井	C₁lz	4.04		文献[25]
YY井	C₁lz	1.39	8.0	本次研究
GLD井	C₁lz	1.37	0.7	本次研究

编号	岩性	深度（m）	TOC（%）	R_O （%）	孔体积（mL/g）				孔体积所占比例			比表面积（m²/g）
编号	岩性	深度（m）	TOC（%）	R_O （%）	微孔	介孔	大孔	总孔容	微孔	介孔	大孔	比表面积（m²/g）
1-YY	深灰色泥质灰岩	3 083.01	0.29		0.000 5	0.001 4	0.001 1	0.002 9	15.36	47.44	37.2	1.239
2-YY	深灰色钙质泥岩	3 075.51	1.76	3.83	0.004 9	0.005 6	0.002 0	0.012 6	39.01	44.75	16.24	10.408
3-YY	灰黑色碳质泥岩	3 090.07	2.73		0.003 5	0.004 8	0.002 2	0.010 4	33.14	45.79	21.07	7.238
4-YY	灰黑色碳质泥岩	3 092.51	3.28	4.05	0.002 5	0.002 8	0.003 0	0.008 3	30.05	33.77	36.18	5.436
5-GLD	黑色硅质泥岩	1 875.70	4.83	2.42	0.001 6	0.002 1	0.001 1	0.004 8	33.95	42.86	23.19	3.641
平均值			2.58	3.43	0.002 6	0.003 3	0.001 9	0.007 8	30.30	42.92	26.78	5.592

Pore characteristics and evaluation of shale reservoir in Lower Carboniferous Luzhai Formation, northern part of middle Guangxi Depression

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 11

References 28

Related Articles 15

Metrics

Comments

Recommended 10

[1]	YAO Hongsheng, WANG Wei, HE Xipeng, ZHENG Yongwang, NI Zhenyu. Development practices of geology-engineering integration in complex structural area of Nanchuan normal pressure shale gas field [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 537-547.
[2]	LI Jingchang, LU Ting, NIE Haikuan, FENG Dongjun, DU Wei, SUN Chuanxiang, LI Wangpeng. Confidence evaluation of fractures seismic detection in shale gas formations on WY23 Pad in Weirong [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 614-626.
[3]	XIA Haibang, HAN Kening, SONG Wenhui, WANG Wei, YAO Jun. Pore scale fracturing fluid occurrence mechanisms in multi-scale matrix-fracture system of shale gas reservoir [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 627-635.
[4]	HOU Dali, HAN Xin, TANG Hongming, GUO Jianchun, GONG Fengming, SUN Lei, QIANG Xianyu. Primary research on expression of kerogen in Longmaxi Shale and its adsorption characteristics [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 636-646.
[5]	HAN Kening, WANG Wei, FAN Dongyan, YAO Jun, LUO Fei, YANG Can. Production forecasting for normal pressure shale gas wells based on coupling of production decline method and LSTM model [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 647-656.
[6]	XUE Gang, XIONG Wei, ZHANG Peixian. Genesis analysis and effective development of normal pressure shale gas reservoir: A case of Wufeng-Longmaxi shale gas reservoir in southeast margin of Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 668-675.
[7]	LOU Zhanghua, ZHANG Xinke, WU Yuchen, GAO Yuqiao, ZHANG Peixian, JIN Aimin, ZHU Rong. Fluid response characteristics of shale gas preservation differences in Nanchuan and its adjacent blocks in Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 451-458.
[8]	HU Zhijian, LI Shuxin, WANG Jianjun, ZHOU Hong, ZHAO Yulong, ZHANG Liehui. Productivity evaluation of multi-stage fracturing horizontal wells in shale gas reservoir with complex artificial fracture occurrence [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 459-466.
[9]	LIN Hun, SUN Xinyi, SONG Xixiang, MENG Chun, XIONG Wenxin, HUANG Junhe, LIU Hongbo, LIU Cheng. A model for shale gas well production prediction based on improved artificial neural network [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 467-473.
[10]	LIU Honglin,ZHOU Shangwen,LI Xiaobo. Application of PCA plus OPLS method in rapid reserve production rate prediction of shale gas wells [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 474-483.
[11]	LU Bi,HU Chunfeng,MA Jun. Influencing factors and countermeasures of inter-well interference of fracturing horizontal wells in Nanchuan shale gas field [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(3): 330-339.
[12]	QIU Xiaoxue,ZHONG Guanghai,LI Xiansheng,CHEN Meng,LING Weitong. CFD simulation of flow characteristics of shale gas horizontal wells with different inclination [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(3): 340-347.
[13]	LI Xiaogang, HE Jiangang, YANG Zhaozhong, YI Liangping, HUANG Liuke, DU Bodi, ZHANG Jingqiang. Fracture characteristics based on discrete element method [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(3): 348-357.
[14]	NIE Yunli, GAO Guozhong. Classification of shale gas “sweet spot” based on Random Forest machine learning [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(3): 358-367.
[15]	YAO Hongsheng,YUN Lu,ZAN Ling,ZHANG Longsheng,QIU Weisheng. Development mode and practice of fault-block oriented shale oil well in the second member of Funing Formation, Qintong Sag, Subei Basin [J]. Reservoir Evaluation and Development, 2023, 13(2): 141-151.