Geological characteristics and sweet spot selection of Permian organic-rich sedimentary tuff series in northern Fuling, Chongqing

DONG Qingyuan; XU Xuhui; LI Guofa

doi:10.11781/sysydz202401064

Volume 46 Issue 1

Jan. 2024

Turn off MathJax

Article Contents

Article Navigation > PETROLEUM GEOLOGY & EXPERIMENT > 2024 > 46(1): 64-74

DONG Qingyuan, XU Xuhui, LI Guofa. Geological characteristics and sweet spot selection of Permian organic-rich sedimentary tuff series in northern Fuling, Chongqing[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(1): 64-74. doi: 10.11781/sysydz202401064

Citation:

DONG Qingyuan, XU Xuhui, LI Guofa. Geological characteristics and sweet spot selection of Permian organic-rich sedimentary tuff series in northern Fuling, Chongqing[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(1): 64-74. doi: 10.11781/sysydz202401064

Citation:

PDF( 1910 KB)

Geological characteristics and sweet spot selection of Permian organic-rich sedimentary tuff series in northern Fuling, Chongqing

doi: 10.11781/sysydz202401064

DONG Qingyuan^{1, 2
,},
XU Xuhui²,
LI Guofa^{1
,
,}

1.
College of Geophysics, China University of Petroleum (Beijing), Beijing 102249, China
2.
SINOPEC Geophysical Research Institute Co., Ltd., Nanjing, Jiangsu 211103, China

Received Date: 2023-05-28
Rev Recd Date: 2023-12-20
Publish Date: 2024-01-28

Abstract

Abstract

The sedimentary tuff in the second member of Permian Wujiaping Formation in the northern Fuling area of Chongqing is a new type of organic-rich source rock, which is a new field of unconventional gas reservoir exploration. Clarifying the distribution of key sweet spot parameters of the sedimentary tuff series in the second member of Wujiaping Formation is a primary issue in exploration and evaluation. Based on drilling, logging, experimental analysis and seismic data, this paper evaluated the target sweet spot starting from the sedimentary tuff series' organic geochemistry, lithological characteristics, thickness distribution, formation pressure, fracture development and other geological conditions for reservoir formation and enrichment, and focusing on the two key factors of lithology quality and compressible fracture network. The results show that: (1) The sedimentary tuff series in the second member of Wujiaping Formation in the northern Fuling area is in the deep-water shelf facies, with high organic matter abundance. The TOC content is mainly 5%-6%, the R_o value ranges 1.90%-2.44%, the organic matter types are mainly Ⅰ and Ⅱ, and the thickness of high-quality sedimentary tuff section (TOC≥4%) is 15-20 m, with a wide distribution area. (2) The reservoir space of the high-quality sedimentary tuff section is diversified, the porosity is high, the brittle mineral content is high, the formation pressure coefficient is high to ultra high pressure level, and small-micro fracture zone is developed at the hinge zone, reflecting a good gas exploration potential of "self-generation and self-storage". (3) The sedimentary tuff gas reservoir in the second member of Wujiaping Formation in the northern Fuling area has the laws of high quality control of enrichment, overpressure control of reservoir and fracture network control of sweet spot. The sweet spot evaluation criteria for sedimentary tuff series in the second member of Wujiaping Formation are preliminarily established in combination with the main control factors, and three target sweet spots are selected, with an area of 186.4 km². The L2-L1 well area in the northwest of the exploration area has good oil and gas shows, which can be a favorable target for recent exploration.
- sedimentary tuff series,
- lithologic quality,
- reservoir prediction,
- sweet spot selection,
- second member of Wujiaping Formation,
- northern Fuling area,
- Chongqing

All authors disclose no relevant conflict of interests.
The study was designed by DONG Qingyuan, XU Xuhui and LI Guofa. The manuscript was drafted and revised by DONG Qingyuan. The manuscript was supervised by XU Xuhui and LI Guofa. All the authors have read the last version of paper and consented for submission.

FullText(HTML)

References(26)

References

[1]	熊伟, 王越, 熊峥嵘, 等. 准噶尔盆地石北凹陷岛弧环境下火山—沉积建造特征及源储发育模式: 以石炭系姜巴斯套组为例[J]. 石油实验地质, 2023, 45(4): 656-666. doi: 10.11781/sysydz202304656 XIONG Wei, WANG Yue, XIONG Zhengrong, et al. Characteristics of volcanic-sedimentary formations and developmental patterns of source and reservoir rocks in an island arc environment of Shibei Sag, Junggar Basin: taking the Carboniferous Jiangbasitao Formation as an example[J]. Petroleum Geology & Experiment, 2023, 45(4): 656-666. doi: 10.11781/sysydz202304656
[2]	张啸, 陈国军, 李俊飞, 等. 准噶尔盆地石西凸起风化型火山岩储层相态发育模式[J]. 特种油气藏, 2023, 30(3): 47-55. ZHANG Xiao, CHEN Guojun, LI Junfei, et al. Phase development pattern of weathered volcanic reservoirs in Shixi high, Junggar Basin[J]. Special Oil & Gas Reservoirs, 2023, 30(3): 47-55.
[3]	夏文谦, 朱祥, 金民东, 等. 川北地区上二叠统吴家坪组火山碎屑岩油气藏储层特征及主控因素[J]. 石油实验地质, 2023, 45(2): 307-316. doi: 10.11781/sysydz202302307 XIA Wenqian, ZHU Xiang, JIN Mindong, et al. Characteristics and controlling factors of volcanic clastic rock reservoirs in Wujiaping Formation of Upper Permian in northern Sichuan Basin[J]. Petroleum Geology & Experiment, 2023, 45(2): 307-316. doi: 10.11781/sysydz202302307
[4]	连志刚, 常智勇, 李路路, 等. 玛东地区二叠系火山岩成藏特征及勘探潜力[J]. 特种油气藏, 2022, 29(5): 57-65. LIAN Zhigang, CHANG Zhiyong, LI Lulu, et al. Hydrocarbon accumulation characteristics and exploration potential of Permian volcanic rocks in Madong area[J]. Special Oil & Gas Reservoirs, 2022, 29(5): 57-65.
[5]	向芳, 肖倩, 喻显涛, 等. 四川盆地元坝地区上二叠统海相凝灰沉积储层特征[J]. 石油与天然气地质, 2022, 43(4): 889-901. XIANG Fang, XIAO Qian, YU Xiantao, et al. Reservoir characteristics of the Upper Permian marine tuffaceous deposits in Yuanba area, Sichuan Basin[J]. Oil & Gas Geology, 2022, 43(4): 889-901.
[6]	张本健, 王宇峰, 裴森奇, 等. 川西北地区上二叠统吴家坪组沉积演化[J]. 天然气地球科学, 2019, 30(12): 1709-1720. doi: 10.11764/j.issn.1672-1926.2019.12.007 ZHANG Benjian, WANG Yufeng, PEI Senqi, et al. Sedimentary evolution of the Upper Permian Wujiaping Formation in the northwestern Sichuan[J]. Natural Gas Geoscience, 2019, 30(12): 1709-1720. doi: 10.11764/j.issn.1672-1926.2019.12.007
[7]	梁西文, 李乐. 鄂西渝东区上二叠统吴家坪组页岩气地质条件及勘探潜力[J]. 石油实验地质, 2021, 43(3): 386-394. doi: 10.11781/sysydz202103386 LIANG Xiwen, LI Le. Geological conditions and exploration potential for shale gas in Upper Permian Wujiaping Formation in the region of western Hubei-eastern Chongqing[J]. Petroleum Geology & Experiment, 2021, 43(3): 386-394. doi: 10.11781/sysydz202103386
[8]	王良军, 杨诚, 王庆波, 等. 四川盆地涪陵地区茅口组热液白云岩储层预测[J]. 物探化探计算技术, 2018, 40(3): 298-305. doi: 10.3969/j.issn.1001-1749.2018.03.03 WANG Liangjun, YANG Cheng, WANG Qingbo, et al. Hydrothermal dolomite reservoir prediction for Maokou Formation in Fuling area, Sichuan Basin[J]. Computing Techniques for Geophysical and Geochemical Exploration, 2018, 40(3): 298-305. doi: 10.3969/j.issn.1001-1749.2018.03.03
[9]	王红岩, 刘德勋, 蔚远江等. 大面积高丰度海相页岩气富集理论及地质评价技术进展与应用[J]. 煤田地质与勘探, 2022, 50(3): 69-81. WANG Hongyan, LIU Dexun, WEI Yuanjiang, et al. Enrichment theory of large area and high abundance marine shale gas and its geological evaluation technology progress and application[J]. Coal Geology & Exploration, 2022, 50(3): 69-81.
[10]	李俊, 卢和平, 胡象辉, 等. 川东红星地区二叠系吴家坪组海相页岩气钻井实践[J]. 石油实验地质, 2023, 45(6): 1189-1195. doi: 10.11781/sysydz2023061189 LI Jun, LU Heping, HU Xianghui, et al. Drilling practice of marine shale gas in Permian Wujiaping Formation in Hongxing area of eastern Sichuan[J]. Petroleum Geology & Experiment, 2023, 45(6): 1189-1195. doi: 10.11781/sysydz2023061189
[11]	刘光祥, 金之钧, 邓模, 等. 川东地区上二叠统龙潭组页岩气勘探潜力[J]. 石油与天然气地质, 2015, 36(3): 481-487. LIU Guangxiang, JIN Zhijun, DENG Mo, et al. Exploration potential for shale gas in the Upper Permian Longtan Formation in eastern Sichuan Basin[J]. Oil & Gas Geology, 2015, 36(3): 481-487.
[12]	邹才能, 董大忠, 王社教, 等. 中国页岩气形成机理、地质特征及资源潜力[J]. 石油勘探与开发, 2022, 37(6): 641-653. ZOU Caineng, DONG Dazhong, WANG Shejiao, et al. Geological characteristics, formation mechanism and resource potential of shale gas in China[J]. Petroleum Exploration and Development, 2010, 37(6): 641-653.
[13]	郭旭升, 郭彤楼, 魏志红, 等. 中国南方页岩气勘探评价的几点思考[J]. 中国工程科学, 2012, 14(6): 101-105, 112. doi: 10.3969/j.issn.1009-1742.2012.06.014 GUO Xusheng, GUO Tonglou, WEI Zhihong, et al. Thoughts on shale gas exploration in southern China[J]. Strategic Study of CAE, 2012, 14(6): 101-105, 112. doi: 10.3969/j.issn.1009-1742.2012.06.014
[14]	李敏, 刘雅利, 冯动军, 等. 中国海相页岩气资源潜力及未来勘探方向[J]. 石油实验地质, 2023, 45(6): 1097-1108. doi: 10.11781/sysydz2023061097 LI Min, LIU Yali, FENG Dongjun, et al. Potential and future exploration direction of marine shale gas resources in China[J]. Petro-leum Geology and Experiment, 2023, 45(6): 1097-1108. doi: 10.11781/sysydz2023061097
[15]	郭少斌, 王子龙, 马啸. 中国重点地区二叠系海陆过渡相页岩气勘探前景[J]. 石油实验地质, 2021, 43(3): 377-385, 414. doi: 10.11781/sysydz202103377 GUO Shaobin, WANG Zilong, MA Xiao. Exploration prospect of shale gas with Permian transitional facies of some key areas in China[J]. Petroleum Geology & Experiment, 2021, 43(3): 377-385, 414. doi: 10.11781/sysydz202103377
[16]	温思宇, 张兵, 姚永君, 等. 川东地区二叠系吴家坪组页岩中黄铁矿形态及其对大洋缺氧事件的指示意义[J]. 岩性油气藏, 2023, 35(5): 71-80. WEN Siyu, ZHANG Bing, YAO Yongjun, et al. Pyrite morphology in shale of Permian Wujiaping Formation in eastern Sichuan Basin and its indicative significance to oceanic anoxic events[J]. Lithologic Reservoirs, 2023, 35(5): 71-80.
[17]	中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 页岩气地质评价方法: GB/T 31483-2015[S]. 北京: 中国标准出版社, 2015: 1-11. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration. Geological evaluation methods for shale gas: GB/T 31483-2015[S]. Beijing: Standards Press of China, 2015: 1-11.
[18]	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. doi: 10.3787/j.issn.1000-0976.2019.10.001 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. doi: 10.3787/j.issn.1000-0976.2019.10.001
[19]	何希鹏, 卢比, 何贵松, 等. 渝东南构造复杂区常压页岩气生产特征及开发技术政策[J]. 石油与天然气地质, 2021, 42(1): 224-240. HE Xipeng, LU Bi, HE Guisong, et al. Production characteristics and optimized development technologies for normal-pressure shale gas in the structurally complex areas of southeastern Chongqing[J]. Oil & Gas Geology, 2021, 42(1): 224-240.
[20]	李明诚. 石油与天然气运移[M]. 北京: 石油工业出版社, 1987: 4-11. LI Mingcheng. Oil and gas migration[M]. Beijing: Petroleum Industry Press, 1987: 4-11.
[21]	赵爽, 李曙光, 林正良. 川南深层五峰—龙马溪组页岩工程"甜点"地震预测技术[J]. 工程地球物理学报, 2022, 19(4): 466-473. ZHAO Shuang, LI Shuguang, LIN Zhengliang. Seismic prediction technology for engineering "sweet spot" of deep Wufeng-Longmaxi formation shale in southern Sichuan[J]. Chinese Journal of Engineering Geophysics, 2022, 19(4): 466-473.
[22]	王幸蒙, 姜振学, 王世骋, 等. 泥页岩天然裂缝特征及其对页岩气成藏、开发的控制作用[J]. 科学技术与工程, 2018, 18(8): 34-42. WANG Xingmeng, JIANG Zhengxue, WANG Shicheng, et al. Characteristics of natural fractures in shale and their control effect on shale gas accumulation and development[J]. Science Technology and Engineering, 2018, 18(8): 34-42.
[23]	胡春锋, 梅俊伟, 李仕钊, 等. 四川盆地东部南川常压页岩气开发效果地质与工程因素分析[J]. 油气藏评价与开发, 2021, 11(4): 559-568. HU Chunfeng, MEI Junwei, LI Shizhao, et al. Analysis on geological and engineering factors of development effects on normal pressure shale gas in Nanchuan block, eastern Sichuan Basin[J]. Petroleum Reservoir Evaluation and Development, 2021, 11(4): 559-568.
[24]	姜晓宇, 张研, 甘利灯, 等. 花岗岩潜山裂缝地震预测技术[J]. 石油地球物理勘探, 2020, 55(3): 694-704. JIANG Xiaoyu, ZHANG Yan, GAN Lideng, et al. Seismic techniques for predicting fractures in granite buried hills[J]. Oil Geophysical Prospecting, 2020, 55(3): 694-704.
[25]	董大忠, 梁峰, 管全中, 等. 四川盆地五峰组—龙马溪组页岩气优质储层发育模式及识别评价技术[J]. 天然气工业, 2022, 42(8): 96-111. DONG Dazhong, LIANG Feng, GUAN Quanzhong, et al. Deve-lopment model and identification evaluation technology of Wufeng-Longmaxi formation quality shale gas reservoirs in the Sichuan Basin[J]. Natural Gas Industry, 2022, 42(8): 96-111.
[26]	蔡勋育, 周德华, 赵培荣, 等. 中国石化深层、常压页岩气勘探开发进展与展望[J]. 石油实验地质, 2023, 45(6): 1039-1049. doi: 10.11781/sysydz2023061039 CAI Xunyu, ZHOU Dehua, ZHAO Peirong, et al. Development progress and outlook of deep and normal pressure shale gas of SINOPEC[J]. Petroleum Geology & Experiment, 2023, 45(6): 1039-1049. doi: 10.11781/sysydz2023061039

Relative Articles

Supplements(0)

Cited By

Proportional views

Proportional views

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

Figures(11) / Tables(2)

Citation

XML

PDF-CN

Article Metrics

Article views (395) PDF downloads(49)

Geological characteristics and sweet spot selection of Permian organic-rich sedimentary tuff series in northern Fuling, Chongqing

doi: 10.11781/sysydz202401064

Abstract

References

Proportional views

Catalog

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related

Geological characteristics and sweet spot selection of Permian organic-rich sedimentary tuff series in northern Fuling, Chongqing

doi: 10.11781/sysydz202401064

Abstract

References

Proportional views

Catalog

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related

Export File

Citation

Format

Content