页岩气富集高产主控因素分析——以四川盆地涪陵地区五峰组-龙马溪组一段页岩为例

方栋梁; 孟志勇

doi:10.11781/sysydz202001037

页岩气富集高产主控因素分析——以四川盆地涪陵地区五峰组-龙马溪组一段页岩为例

doi: 10.11781/sysydz202001037

中国石化江汉油田分公司勘探开发研究院, 武汉 433124

基金项目:

国家科技重大专项 2016ZX05060

国家自然科学青年基金项目 41702149

详细信息

作者简介:
方栋梁(1982-), 男, 工程师, 从事非常规油气勘探开发研究工作。E-mail: 739981781@qq.com

中图分类号: TE122.3
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- 被引次数: 0
出版历程
- 收稿日期: 2019-04-30
- 修回日期: 2019-12-13
- 刊出日期: 2020-01-28

Main controlling factors of shale gas enrichment and high yield: a case study of Wufeng-Longmaxi formations in Fuling area, Sichuan Basin

Exploration and Development Research Institute, SINOPEC Jianghan Oilfield, Wuhan, Hubei 433124, China

摘要

摘要: 以四川盆地涪陵地区五峰组-龙马溪组海相页岩为研究对象，综合岩心观察、地化分析、测井和地震资料，分别从页岩气富集和高产两方面开展主控因素系统分析，明确有机碳含量、微-纳米尺度孔隙和保存条件是页岩气富集主控因素。其中有机碳含量不仅是评价页岩原生品质的重要参数，同时影响微-纳米尺度孔隙发育特征，而保存条件是页岩气富集的重要基础保障。页岩气高产受脆性矿物含量、埋深、构造形态和裂缝因素影响，其中脆性矿物含量越高，页岩可压性越好；页岩埋深及构造形态对于地应力影响较大，从而影响页岩储层的压裂改造效果；裂缝的发育导致压裂过程中压力的定向性泄压，无法形成有效复杂缝网。
- 页岩气 /
- 富集高产 /
- 主控因素 /
- 五峰组-龙马溪组 /
- 涪陵地区 /
- 四川盆地
Abstract: The controlling factors of shale gas enrichment and yield were discussed based on core observation, geochemical analysis, logging and seismic data of marine shale collected from the Wufeng-Longmaxi formations in the Fuling area of Sichuan Basin. Total organic carbon content, micro-to nano-scale pores and preservation conditions are the main controlling factors for shale gas enrichment. The total organic carbon content is not only an important parameter for evaluating original shale quality, but also affects micro-to nano-scale pore development. The preservation condition is important for shale gas enrichment. The high yield of shale gas is affected by brittle mineral content, burial depth, structural morphology and fractures. The higher the brittle mineral content, the better the compressibility of shale and the better the effect of fracturing. In addition, burial depth and structure features have great effect on crustal stress, and thus have significant influence on fracturing. Natural fracture development leads to directional pressure relief during fracturing, and it is difficult to form an effective and complex permeability mesh.
- shale gas /
- enrichment and high yield /
- main controlling factor /
- Wufeng-Longmaxi formations /
- Fuling area /
- Sichuan Basin

HTML全文

图 1 四川盆地涪陵地区志留系底反射层构造及JY1井五峰组—龙马溪组岩性特征

Figure 1. Structure of basal Silurian and lithological characteristics of Wufeng-Longmaxi formations in well JY1, Fuling area, Sichuan Basin

下载: 全尺寸图片幻灯片

图 2 四川盆地焦石坝地区五峰组—龙马溪组一段含气页岩有机碳含量与总含气量和比表面积关系

Figure 2. Correlation diagram of organic carbon content, total gas content and specific surface area of gas-bearing shale in Wufeng Formation-first member of Longmaxi Formation, Jiaoshiba area, Sichuan Basin

下载: 全尺寸图片幻灯片

图 3 四川盆地焦石坝地区五峰组—龙马溪组一段含气页岩比表面积主控因素相关性分析

Figure 3. Correlation of main controlling factors of specific surface area of gas-bearing shale in Wufeng Formation-first member of Longmaxi Formation, Jiaoshiba area, Sichuan Basin

下载: 全尺寸图片幻灯片

图 4 四川盆地焦石坝地区五峰组—龙马溪组一段含气页岩微—纳米孔隙镜下观察

Figure 4. Observation of micro- to nano-porosity in gas-bearing shale in Wufeng Formation-first member of Longmaxi Formation, Jiaoshiba area, Sichuan Basin

下载: 全尺寸图片幻灯片

图 5 四川盆地焦页B井五峰组—龙马溪组一段含气页岩上下邻层裂缝及流体包裹体照片

Figure 5. Photographs of cracks and fluid inclusions in upper and lower adjacent layers of gas-bearing shale in Wufeng Formation-first member of Longmaxi Formation, well Jiaoye B, Sichuan Basin

下载: 全尺寸图片幻灯片

图 6 四川盆地焦石坝区块1 500 m水平段无阻流量与测井解释脆性指数拟合

Figure 6. Correlation of unobstructed flow in 1 500 m horizontal section and brittleness index fitting of logging interpretation, Jiaoshiba area Sichuan Basin

下载: 全尺寸图片幻灯片

图 7 四川盆地焦石坝地区下部气层已测试井归一化试气产量与埋深关系

Figure 7. Normalized test gas yield and burial depth of test wells in gas reservoir in lower part of Jiaoshiba area, Sichuan Basin

下载: 全尺寸图片幻灯片

图 8 四川盆地焦石坝地区焦页F井水平段曲率预测及微地震检测结果

Figure 8. Curvature prediction and microseismic test results of horizontal section of well JY F in Jiaoshiba area, Sichuan Basin

下载: 全尺寸图片幻灯片

参考文献(10)

[1]	肖开华, 李双建, 汪新伟, 等. 中、上扬子区志留系油气成藏特点与勘探前景[J]. 石油与天然气地质, 2008, 29(5): 589-596. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT200805011.htm XIAO Kaihua, LI Shuangjian, WANG Xinwei, et al. Hydrocarbon accumulation features and exploration direction in the Silurian of the Middle-Upper Yangtze Platform[J]. Oil & Gas Geology, 2008, 29(5): 589-596. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT200805011.htm
[2]	张金川, 聂海宽, 徐波, 等. 四川盆地页岩气成藏地质条件[J]. 天然气工业, 2008, 28(2): 151-156. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG200802057.htm ZHANG Jinchuan, NIE Haikuan, XU Bo, et al. Geological condition of shale gas accumulation in Sichuan Basin[J]. Natural Gas Industry, 2008, 28(2): 151-156. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG200802057.htm
[3]	李金磊, 尹成, 王明飞, 等. 四川盆地涪陵焦石坝地区保存条件差异性分析[J]. 石油实验地质, 2019, 41(3): 341-347. doi: 10.11781/sysydz201903341 LI Jinlei, YIN Cheng, WANG Mingfei, et al. Preservation condition differences in Jiaoshiba area, Fuling, Sichuan Basin[J]. Petroleum Geology & Experiment, 2019, 41(3): 341-347. doi: 10.11781/sysydz201903341
[4]	王丹, 王维旭, 朱炬辉, 等. 四川盆地中浅层龙马溪组页岩储层改造技术[J]. 断块油气田, 2019, 26(03): 350-354. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201903018.htm WANG Dan, WANG Weixu, ZHU Juhui, et al. Stimulation technology of medium-shallow shale gas in Longmaxi Formation of Sichuan Basin[J]. Fault-Block Oil and Gas Field, 2019, 26(03): 350-354. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT201903018.htm
[5]	聂海宽, 包书景, 高波, 等. 四川盆地及其周缘上奥陶统—下志留统页岩气成藏体系研究[J]. 石油实验地质, 2012, 34(2): 115-119. doi: 10.11781/sysydz201202115 NIE Haikuan, BAO Shujing, GAO Bo, et al. Accumulation system for shale gas from Upper Ordovician to Lower Silurian in Sichuan Basin and surrounding areas[J]. Petroleum Geology & Experiment, 2012, 34(2): 115-119. doi: 10.11781/sysydz201202115
[6]	谢晓永, 唐洪明, 王春华, 等. 氮气吸附法和压汞法在测试泥页岩孔径分布中的对比[J]. 天然气工业, 2006, 26(12): 100-102. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG200612030.htm XIE Xiaoyong, TANG Hongming, WANG Chunhua, et al. Contrast of nitrogen adsorption method and mercury porosimetry method in analysis of shale's pore size distribution[J]. Natural Gas Industry, 2006, 26(12): 100-102. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG200612030.htm
[7]	张士万, 孟志勇, 郭战峰, 等. 涪陵地区龙马溪组页岩储层特征及其发育主控因素[J]. 天然气工业, 2014, 34(12): 16-24. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG201412003.htm ZHANG Shiwan, MENG Zhiyong, GUO Zhanfeng, et al. Characteristics and major controlling factors of shale reservoirs in the Longmaxi Fm, Fuling area, Sichuan Basin[J]. Natural Gas Industry, 2014, 34(12): 16-24. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG201412003.htm
[8]	易积正, 王超. 四川盆地焦石坝地区龙马溪组海相页岩储层非均质性特征[J]. 石油实验地质, 2018, 40(1): 13-19. doi: 10.11781/sysydz201801013 YI Jizheng, WANG Chao. Differential pore development characteristics in various shale lithofacies of Longmaxi Formation in Jiaoshiba area, Sichuan Basin[J]. Petroleum Geology & Experiment, 2018, 40(1): 13-19. doi: 10.11781/sysydz201801013
[9]	王超, 张柏桥, 舒志国, 等. 四川盆地涪陵地区五峰组—龙马溪组海相页岩岩相类型及储层特征[J]. 石油与天然气地质, 2018, 39(3): 485-497. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201803007.htm WANG Chao, ZHANG Boqiao, SHU Zhiguo, et al. Lithofacies types and reservoir characteristics of marine shales of the Wufeng Formation-Longmaxi Formation in Fuling area, the Sichuan Basin[J]. Oil & Gas Geology, 2018, 39(3): 485-497. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201803007.htm
[10]	习传学, 高东伟, 陈新安, 等. 涪陵页岩气田西南区块压裂改造工艺现场试验[J]. 特种油气藏, 2018, 25(1): 155-159. https://www.cnki.com.cn/Article/CJFDTOTAL-TZCZ201801032.htm XI Chuanxue, GAO Dongwei, chen Xinan, et al. Field test of fracturing technology in the southwest section of Fuling Shale Gas Field[J]. Special Oil & Gas Reservoirs, 2018, 25(1): 155-159. https://www.cnki.com.cn/Article/CJFDTOTAL-TZCZ201801032.htm