川东北地区须家河组“断缝体”气藏有利勘探目标和预测技术

doi:10.11743/ogg20210419

摘要/Abstract

摘要：

上三叠统须家河组致密砂岩是川东北地区天然气勘探的重点领域之一，整体具有“埋藏深度大、储层致密，非均质性强，商业动用难度大”的特点。川东北地区须家河组发育“断缝体”气藏，通南巴构造带的通江-马路背地区是“断缝体”气藏勘探最有利区带，优势岩相和裂缝发育区是有效储层发育的有利勘探目标。利用动态构造识别技术、非线性岩性与物性反演预测技术以及综合裂缝预测技术等关键方法，有效地解决了烃源断层识别、相对优质储层预测以及裂缝预测等问题，实现储层“甜点”综合预测。这些技术在川东北“断缝体”气藏勘探中应用效果显著，储层厚度预测误差从16%降低到8%，裂缝预测吻合率从60%提高到85%；依据“断缝体”评价思路部署实施的4口井均取得了较好的效果，钻井成功率100%，提交天然气控制储量367.91×10⁸m³，落实了千亿方资源规模阵地，基本实现了川东北地区通江-马路背区块的高效勘探。

关键词: 烃源断层, 断缝体, 储层预测, 致密砂岩, 须家河组, 四川盆地

Abstract:

Tight sandstone in the Upper Triassic Xujiahe Formation, northeastern Sichuan Basin, has been one of the exploration targets for natural gas in the area. However, the stone, as a whole, is rather tight, deeply buried and highly heterogeneous, making commercial development of gas from it quite a challenge. The formation contains many fault-fracture gas reservoirs in the Tongjiang-Malubei area of the Tongnanba structural belt, where certain lithological facies in well-fractured zones may be used as clues to the whereabouts of the reservoirs. By recognition of source rock-rooted faults based on dynamic structure restoration, nonlinear inversion and prediction of lithology and physical properties, and multi-scale fusion as well as five-dimensional pre-stack fracture prediction in OVT domain, we effectively addressed the recognition of source rock-rooted faults, the prediction of relatively high-quality reservoirs and fractures as well as "sweet spots"-several issues easily encountered in dealing with this type of reservoir. These techniques were applied well to the predication of fault-fracture reservoirs in the northeast Sichuan Basin with prediction error of reservoir thickness being reduced from 16% to 8% and predication accuracy of fractures being increased from 60% to 85%. Four wells were so successfully drilled according to the predication results that controlled reserves of 367.91×10⁸ m³ were booked with a possible gas resource base of 100 billion cubic meters readily on the way.

Key words: source rock-rooted fault, reservoir prediction, tight sandstone, Xujiahe Formation, fault-fracture body, Sichuan Basin

中图分类号:

TE122.2

王威,凡睿,黎承银,等. 川东北地区须家河组“断缝体”气藏有利勘探目标和预测技术[J]. 石油与天然气地质, 2021, 42(4): 992-1001. doi: 10.11743/ogg20210419 Wei Wang,Rui Fan,Chengyin Li,et al. Exploration and prediction of promising fault-fracture reservoirs in the Xujiahe Formation, northeastern Sichuan Basin[J]. Oil & Gas Geology, 2021, 42(4): 992-1001. doi: 10.11743/ogg20210419

图/表 10

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参考文献 31

1	郭彤楼. 四川盆地北部陆相大气田形成与高产主控因素[J]. 石油勘探与开发, 2013, 40 (2): 139- 149.
	Guo Tonglou . Key controls on accumulation and high production of large non-marine gas fields in northern Sichuan Basin[J]. Petroleum Exploration & Development, 2013, 40 (2): 139- 149.
2	王威. 川东北地区须家河组天然气高效成藏模式探讨[J]. 岩性油气藏, 2018, 30 (3): 27- 34.
	Wang Wei . High efficient reservoir accumulation models of natural gas of Xujiahe Formation in northeastern Sichuan Basin[J]. Lithologic Reservoirs, 2018, 30 (3): 27- 34.
3	周路, 李飞, 何登发, 等. 四川盆地北部地区三叠系构造及其演化特征分析[J]. 地质科学, 2013, 48 (1): 71- 92.
	Zhou Lu , Li Fei , He Dengfa , et al. Structure and evolution characteristics analysis of Triassic in northern Sichuan Basin[J]. Chinese Journal of Geology, 2013, 48 (1): 71- 92.
4	蔡勋育, 邱桂强, 孙冬胜, 等. 中国中西部大型盆地致密砂岩油气"甜点"类型与特征[J]. 石油与天然气地质, 2020, 41 (4): 684- 695.
	Cai Xunyu , Qiu Guiqiang , Sun Dongsheng , et al. Types and characteristics of tight sandstone sweet spots in large basins of central-western China[J]. Oil & Gas Geology, 2020, 41 (4): 684- 695.
5	刘忠群, 徐士林, 刘君龙, 等. 四川盆地川西坳陷深层致密砂岩气藏富集规律[J]. 天然气工业, 2020, 40 (2): 31- 40.
	Liu Zhongqun , Xu Shilin , Liu Junlong , et al. Enrichment laws of deep tight sandstone gas reservoirs in the Western Sichuan Depression, Sichuan Basin[J]. Natural Gas Industry, 2020, 40 (2): 31- 40.
6	王威, 凡睿. 四川盆地北部须家河组"断缝体"气藏特征及勘探意义[J]. 成都理工大学学报(自然科学版), 2019, 46 (5): 541- 548. doi: 10.3969/j.issn.1671-9727.2019.05.04
	Wang Wei , Fan Rui . Characteristics of Xujiahe Formation fault-fracture reservoirs in the northern Sichuan Basin and its exploration significance[J]. Journal of Chengdu University of Technology(Science & Technology edition), 2019, 46 (5): 541- 548. doi: 10.3969/j.issn.1671-9727.2019.05.04
7	王威. 四川元坝地区须二段致密砂岩储层孔隙演化与天然气成藏[J]. 成都理工大学学报(自然科学版), 2012, 39 (2): 151- 157. doi: 10.3969/j.issn.1671-9727.2012.02.006
	Wang Wei . Pore evolution and gas accumulation in tight sandstone reservoir of Member 2 of Xujiahe Formation in Yuanba area of Sichuan, China[J]. Journal of Chengdu University of Technology(Science & Technology edition), 2012, 39 (2): 151- 157. doi: 10.3969/j.issn.1671-9727.2012.02.006
8	姜复东, 苏培东, 秦启荣. 通南巴地区主要构造成因模式探讨[J]. 断块油气田, 2008, 15 (3): 14- 17.
	Jiang Fudong , Su Peidong , Qin Qirong . Discussion of main tectogenetic models in Tongnanba Area[J]. Fault-Block Oil and Gas Field, 2008, 15 (03): 14- 17.
9	赵文智, 王红军, 徐春春, 等. 川中地区须家河组天然气藏大范围成藏机理与富集条件[J]. 石油勘探与开发, 2010, 37 (2): 146- 157.
	Zhao Wenzhi , Wang Hongjun , Xu Chunchun , et al. Reservoir forming mechanism and enrichment conditions of the extensive Xujiahe Formation gas reservoirs, central Sichuan Basin[J]. Petroleum Exploration & Development, 2010, 37 (2): 146- 157.
10	戴金星, 宋岩, 张厚福. 中国大中型气田形成的主要控制因素[J]. 中国科学(D辑), 1996, 26 (6): 481- 487. doi: 10.3321/j.issn:1006-9267.1996.06.001
	Dai Jinxing , Song Yan , Zhang Houfu . Main controlling factors for the formation of large and mediumsized gas fields in China[J]. Science China Earth Science, 1996, 26 (6): 481- 487. doi: 10.3321/j.issn:1006-9267.1996.06.001
11	李军, 郭彤楼, 邹华耀, 等. 四川盆地北部上三叠统须家河组煤系烃源岩生烃史[J]. 天然气工业, 2012, 32 (3): 25- 28. doi: 10.3787/j.issn.1000-0976.2012.03.005
	Li Jun , Guo Tonglou , Zou Huayao , et al. Hydrocarbon generation history of coalmeasure source rocks in the upper Triassic Xujiahe Formation of the northern Sichuan Basin[J]. Natural Gas Industry, 2012, 32 (3): 25- 28. doi: 10.3787/j.issn.1000-0976.2012.03.005
12	屈红军, 蒲仁海, 陈硕, 等. 相-势耦合控制鄂尔多斯盆地中生界石油聚集[J]. 石油与天然气地质, 2019, 40 (4): 752- 762, 874.
	Qu Hongjun , Pu Renhai , Chen Shuo , et al. Controls of facies-potential coupling on oil accumulation in the Mesozoic Ordos Basin[J]. Oil & Gas Geology, 2019, 40 (4): 752- 762, 874.
13	刘昭茜, 罗开平, 唐永, 等. 四川盆地元坝-通南巴地区关键构造期构造特征及陆相致密砂岩天然气成藏响应[J]. 地球科学, 2019, 44 (3): 756- 772.
	Liu Zhaoqian , Luo Kaiping , Tang Yong , et al. Critical tectonic periods and the response of gas accumulation in non-marine tight sandstone reservoir in Yuanba-Tongnanba area, Sichuan Basin[J]. Earth Science, 2019, 44 (3): 756- 772.
14	邹才能, 陶士振, 朱如凯. "连续型"气藏及其大气区形成机制与分布-以四川盆地上三叠统须家河组煤系大气区为例[J]. 石油勘探与开发, 2009, 36 (3): 307- 319. doi: 10.3321/j.issn:1000-0747.2009.03.006
	Zou Caineng , Tao Shizhen , Zhu Ruka , et al. Formation and distribution of "continuous" gas reservoirs and their giant gas province: A case from the Upper Triassic Xujiahe Formation giant gas province, Sichuan Basin[J]. Petroleum Exploration & Development, 2009, 36 (3): 307- 319. doi: 10.3321/j.issn:1000-0747.2009.03.006
15	王威, 黄曼宁. 元坝地区须家河组致密砂岩气藏富集主控因素[J]. 成都理工大学学报(自然科学版), 2016, 43 (3): 266- 273. doi: 10.3969/j.issn.1671-9727.2016.03.02
	Wang Wei , Huang Manning . Main controlling factors of tight sandstone gas reservoir of Upper Triassic Xujiahe Formation in Yuanba area, Sichuan, China[J]. Journal of Chengdu University of Technology(Science & Technology Edition), 2016, 43 (3): 266- 273. doi: 10.3969/j.issn.1671-9727.2016.03.02
16	杜红权, 王威, 时志强, 等. 四川盆地东北部马路背地区上三叠统须家河组天然气地球化学特征及气源[J]. 石油与天然气地质, 2019, 40 (1): 34- 40.
	Du Hongquan , Wang Wei , Shi Zhiqiang , et al. Geochemical characteristics and source of natural gas of the Upper Triassic Xujiahe Formation in Malubei area, northeastern Sichuan Basin[J]. Oil & Gas Geology, 2019, 40 (1): 34- 40.
17	朱光有, 张水昌, 梁英波, 等. 四川盆地天然气特征及气源[J]. 地学前缘, 2006, 13 (2): 234- 248. doi: 10.3321/j.issn:1005-2321.2006.02.022
	Zhu Guangyou , Zhang Shuichang , Liang Yingbo , et al. The characteristics of natural gas in Sichaun basin and its sources[J]. Earth Science Frontiers, 2006, 13 (2): 234- 248. doi: 10.3321/j.issn:1005-2321.2006.02.022
18	吴小奇, 黄士鹏, 廖凤蓉, 等. 四川盆地须家河组及侏罗系煤成气碳同位素特征[J]. 石油勘探与开发, 2011, 38 (4): 418- 427.
	Wu Xiaoqi , Huang Shipeng , Liao Fengrong , et al. Carbon isotopic compositions of coal-formed gas in the Xujiahe Formation and Jurassic in western Sichuan Basin[J]. Petroleum Exploration & Development, 2011, 38 (4): 418- 427.
19	李岩峰. 四川盆地东北部中-新生代造山与前陆变形构造叠合关系研究[D]. 成都: 成都理工大学, 2005.
	Li Yanfeng. Mesozoic-Cenozoic Superimposed Orogeny and Foreland Deformation in the Northeastern Sichuan Basin[D]. Chengdu: Journal of Chengdu University of Technology, 2005.
20	徐樟有, 宋丽, 吴欣松. 川中地区上三叠统须家河组典型气藏解剖与天然气成藏主控因素分析[J]. 岩性油气藏, 2009, 21 (2): 7- 11. doi: 10.3969/j.issn.1673-8926.2009.02.002
	Xu Zhangyou , Song Li , Wu Xinsong , et al. Typical gas reservoirs and main controlling factors of reservoir-forming of Upper Triassic Xujiahe Formation in central Sichuan Basin[J]. Lithologic Reservoirs, 2009, 21 (2): 7- 11. doi: 10.3969/j.issn.1673-8926.2009.02.002
21	徐德奎, 王玉英, 郑江峰, 等. 倾角导向的相干加强技术在改善复杂断块地震资料中的应用[J]. 地球物理学进展, 2016, 31 (3): 1224- 1228.
	Xu Dekui , Wang Yuying , Zheng Jiangfeng , et al. Dip steering coherent-enhancing filtering and its application on seismic data of complex fault-block[J]. Progress in Geophysics, 2016, 31 (3): 1224- 1228.
22	段友祥, 曹婧, 孙歧峰. 自适应倾角导向技术在断层识别中的应用[J]. 岩性油气藏, 2017, 29 (4): 101- 107.
	Duan Youxiang , Cao Jing , Sun Qifeng . Application of auto-adaptive dip-steering technique to fault recognition[J]. Lithologic Reservoirs, 2017, 29 (4): 101107.
23	李光明, 冯磊. 基于图像信息的地震断层增强方法及其应用[J]. 地球物理学进展, 2012, 27 (5): 2138- 2142.
	Li Guangming , Feng Lei . Image processing the enhancement of the seismic fault of method and its application[J]. Progress in Geophysics, 2012, (5): 2138- 2143.
24	杨培杰, 穆星, 张景涛. 方向性边界保持断层增强技术[J]. 地球物理学报, 2010, 53 (12): 2992- 2997. doi: 10.3969/j.issn.0001-5733.2010.12.023
	Yang Peijie , Mu Xing , Zhang Jingchao . Orientational edge preserving fault enhance[J]. Chinese Journal of Geophysics, 2010, 53 (12): 2992- 2997. doi: 10.3969/j.issn.0001-5733.2010.12.023
25	刘保国. 提高大牛地气田三维地震储层预测精度的思考[J]. 石油物探, 2008, 47 (1): 95- 102. doi: 10.3969/j.issn.1000-1441.2008.01.016
	Liu Baoguo . Considerations for improving accuracy of reservoir prediction from 3-D seismic data in Daniudi gas field[J]. Geophysical Prospecting for Petroleum, 2008, 47 (1): 95- 102. doi: 10.3969/j.issn.1000-1441.2008.01.016
26	甘其刚, 高志平. 宽方位AVA裂缝检测技术应用研究[J]. 天然气工业, 2005, 25 (5): 42- 44. doi: 10.3321/j.issn:1000-0976.2005.05.013
	Gan Qigang , Gao Zhiping . Application of AVA fracture detection technique[J]. Natural Gas Industry, 2005, 25 (5): 42- 43. doi: 10.3321/j.issn:1000-0976.2005.05.013
27	高帅, 曾联波, 马世忠, 等. 致密砂岩储层不同方向构造裂缝定量预测[J]. 天然气地球科学, 2015, 26 (3): 427- 434.
	Gao Shuai , Zeng Lianbo , Ma Shizhong , et al. Quantitative prediction of fractures with different directions in tight sandstone reservoirs[J]. Natural Gas Geoscience, 2015, 26 (3): 427434.
28	李四海, 马新仿, 张士诚, 等. CO₂-水-岩作用对致密砂岩性质与裂缝扩展的影响[J]. 新疆石油地质, 2019, 40 (3): 312- 318.
	Li Sihai , Ma Xinfang , Zhang Shicheng , et al. Experimental investigation on the influence of CO₂-brine-rock interaction on tight sandstone properties and fracture propagation[J]. Xinjiang Petroleum Geology, 2019, 40 (3): 312- 318.
29	印兴耀, 刘志国, 李春鹏, 等. 裂缝型储层预测的稳定方位AVO梯度无约束反演方法研究[J]. 石油物探, 2014, 53 (6): 683- 691. doi: 10.3969/j.issn.1000-1441.2014.06.008
	Yin Xingyao , Liu Zhiguo , Li Chunpeng , et al. Fracture formation prediction with a steady azimuth AVO gradient unconstrained inversion method[J]. Geophysical Prospecting for Petroleum, 2014, 53 (6): 683- 691. doi: 10.3969/j.issn.1000-1441.2014.06.008
30	Shaoqun Dong , Lianbo Zeng , Wenya Lyu , et al. Fracture identification and evaluation using conventional logs in tight sandstones: A case study in the Ordos Basin, China[J]. Energy Geoscience, 2020, 1 (3-4): 115- 123. doi: 10.1016/j.engeos.2020.6.3
31	叶亮, 李宪文, 马新星, 等. 不同脆性致密砂岩裂缝扩展规律实验[J]. 新疆石油地质, 2020, 41 (5): 575- 581.
	Ye Liang , Li Xianwen , Ma Xinxing , et al. Experiments on hydraulic fracture propagation in tight sandstones with different brittleness[J]. Xinjiang Petroleum Geology, 2020, 41 (5): 575- 581.

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