基于合金注入与大视域图像技术的致密储层孔隙与喉道表征

唐相路; 萧汉敏; 姜振学; 刘学伟; 杨再权; 刘格; 张帆

doi:10.11781/sysydz202301185

基于合金注入与大视域图像技术的致密储层孔隙与喉道表征

doi: 10.11781/sysydz202301185

1.
中国石油大学(北京) 油气资源与探测国家重点实验室, 北京 102249
2.
中国石油勘探开发研究院, 北京 100083

基金项目:

国家自然科学基金 41802153

国家自然科学基金 41872135

中国石油天然气股份有限公司“十四五”科技专项 2021DJ2201

详细信息

作者简介:
唐相路(1988—)，男，博士，副研究员，从事非常规油气储层表征与成藏机理教学和科研工作。E-mail: tangxl@cup.edu.cn

中图分类号: TE135
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出版历程
- 收稿日期: 2022-01-26
- 修回日期: 2022-11-21
- 刊出日期: 2023-01-28

Pore and throat characterization of tight reservoirs based on the methods of alloy injection and large-field image stitching

1.
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
2.
Research Institute of Exploration and Development, PetroChina, Beijing 100083, China

摘要

摘要: 致密油气是我国油气资源的重要组成部分，对其孔喉结构的研究有利于推进致密油气地质理论的丰富和完善。以鄂尔多斯盆地三叠系延长组致密储层为例，通过高温高压合金注入装置，结合大视域图像拼接技术与图像孔隙提取方法，建立了致密储层孔隙结构表征新方法。结果表明，将合金注入致密储层孔隙中可以较好地反映孔隙连通性特征，使孔隙形貌和结构更加容易辨别。大视域图像拼接方法解决了孔隙分布非均质性强、小视域观察代表性差的问题。鄂尔多斯盆地延长组致密储层主要发育粒间孔、粒内孔和粒间—粒内混合孔，其中粒间孔最为发育。孔隙缩小型喉道、缩颈型喉道、管束型喉道、片状喉道和弯片状喉道是其发育的5种喉道类型，其中弯片状喉道最为发育。石英和长石的孔隙明显大于其他矿物孔隙，对致密储层面孔率的贡献率达74%，是致密油气重要的赋存空间。
- 孔喉结构 /
- 合金注入 /
- 大视域图像 /
- 孔喉提取 /
- 致密储层
Abstract: Tight oil and gas is an important part of China's oil and gas resources, and the study of related pore-throat structure is conducive to the enrichment and improvement of tight oil and gas geological theory. Taking the tight reservoir of the Triassic Yanchang Formation in the Ordos Basin as an example, combined with large-field image stitching method and image pore extraction method, this paper established a new method for pore-throat structure characterization of tight reservoir with high-temperature and high-pressure alloy injection. Results show that the alloy injected into the pores of tight reservoirs can reflect the characteristics of pore connectivity better, and the pore morphology and structure are easier to be identified. The large-field image stitching method solves the problem of strong heterogeneity of pore distribution and poor representativeness of small-field observation. The tight reservoirs of the Yanchang Formation in the Ordos Basin are mainly composed of intergranular pores, intragranular pores, and intergranular-intragranular mixed pores, among which the intergranular pores are mostly developed. There are five types of throats, including pore shrinkage throat, neck constricted throat, bundle throat, sheet throat and curved sheet throat, among which the curved sheet throat is mostly developed. The porosity of quartz and feldspar is significantly larger than that of other minerals, contributing 74% to the surface porosity of tight reservoir, and is an important occurring space for tight oil and gas.
- pore-throat structure /
- alloy injection /
- large-field image /
- pore-throat extraction /
- tight reservoir

HTML全文

图 1 高温高压合金注入装置工作原理

Figure 1. Working principle of alloy injection device with high temperature and pressure

下载: 全尺寸图片幻灯片

图 2 大视域图像拼接原理及方法

Figure 2. Schematic diagram of large-field image stitching method

下载: 全尺寸图片幻灯片

图 3 孔喉提取方法示意图

Figure 3. Schematic diagram of pore-throat extraction method

下载: 全尺寸图片幻灯片

图 4 有无合金注入图像差异

Figure 4. Image difference before and after alloyed injection

下载: 全尺寸图片幻灯片

图 5 致密储层孔隙发育类型及特征

Figure 5. Types and characteristics of pores in tight reservoirs

下载: 全尺寸图片幻灯片

图 6 致密储层喉道发育类型及特征

Figure 6. Types and characteristics of throats in tight reservoirs

下载: 全尺寸图片幻灯片

图 7 致密储层孔隙分布特征

Figure 7. Distribution characteristics of pores in tight reservoirs

下载: 全尺寸图片幻灯片

图 8 致密储层喉道分布特征

Figure 8. Distribution characteristics of throats in tight reservoirs

下载: 全尺寸图片幻灯片

参考文献(30)

[1]	罗蛰潭, 王允诚, 邓恂康, 等. 我国主要碳酸盐岩油气田储层孔隙结构的研究及进展[J]. 石油勘探与开发, 1981(5): 40-51. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK198105005.htm LUO Zhetan, WANG Yuncheng, DENG Xunkang, et al. Study on pore structure of main carbonate oil and gas fields in China[J]. Petroleum Exploration and Development, 1981(5): 40-51. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK198105005.htm
[2]	贺承祖, 华明琪. 储层孔隙结构的分形几何描述[J]. 石油与天然气地质, 1998, 19(1): 15-23. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT801.002.htm HE Chengzu, HUA Mingqi. Fractal geometry description of reservoir pore structure[J]. Oil & Gas Geology, 1998, 19(1): 15-23. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT801.002.htm
[3]	邹才能, 朱如凯, 白斌, 等. 中国油气储层中纳米孔首次发现及其科学价值[J]. 岩石学报, 2011, 27(6): 1857-1864. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201106024.htm ZOU Caineng, ZHU Rukai, BAI Bin, et al. First discovery of Nano-pore throat in oil and gas reservoir in China and its scientific value[J]. Acta Petrologica Sinica, 2011, 27(6): 1857-1864. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201106024.htm
[4]	王伟, 陈朝兵, 许爽, 等. 鄂尔多斯盆地延长组致密砂岩不同尺度孔喉分形特征及其控制因素[J]. 石油实验地质, 2022, 44(1): 33-40. doi: 10.11781/sysydz202201033 WANG Wei, CHEN Zhaobing, XU Shuang, et al. Fractal characteristics and its controlling factors of pore-throat with different scales in tight sandstones of the Yanchang Formation in the Ordos Basin[J]. Petroleum Geology & Experiment, 2022, 44(1): 33-40. doi: 10.11781/sysydz202201033
[5]	胡渤, 蒲军, 苟斐斐. 基于数字岩心的致密砂岩微观孔喉结构定量表征[J]. 油气地质与采收率, 2022, 29(3): 102-112. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS202203013.htm HU Bo, PU Jun, GOU Feifei. Quantitative characterization of pore throat microstructure of tight sandstone based on digital core technology[J]. Petroleum Geology and Recovery Efficiency, 2022, 29(3): 102-112. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS202203013.htm
[6]	刘金, 王剑, 张宝真, 等. 准噶尔盆地吉木萨尔凹陷二叠系芦草沟组微—纳米孔隙页岩油原位赋存特征[J]. 石油实验地质, 2022, 44(2): 270-278. doi: 10.11781/sysydz202202270 LIU Jin, WANG Jian, ZHANG Baozhen, et al. In situ occurrence of shale oil in micro-nano pores in Permian Lucaogou Formation in Jimsar Sag, Junggar Basin[J]. Petroleum Geology & Experiment, 2022, 44(2): 270-278. doi: 10.11781/sysydz202202270
[7]	王剑, 周路, 靳军, 等. 准噶尔盆地吉木萨尔凹陷芦草沟组页岩油储层孔隙结构、烃类赋存及其与可动性关系[J]. 石油实验地质, 2021, 43(6): 941-948. doi: 10.11781/sysydz202106941 WANG Jian, ZHOU Lu, JIN Jun, et al. Pore structure, hydrocarbon occurrence and their relationship with shale oil production in Lucaogou Formation of Jimsar Sag, Junggar Basin[J]. Petroleum Geology & Experiment, 2021, 43(6): 941-948. doi: 10.11781/sysydz202106941
[8]	黄奕铭, COLLIER Richard. 致密砂岩储集层微观孔喉结构及其分形特征: 以西加拿大盆地A区块Upper Montney段为例[J]. 新疆石油地质, 2021, 42(4): 506-513. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD202104017.htm HUANG Yiming, COLLIER Richard. Pore throat structure and fractal characteristics of tight sandstone reservoirs: a case study of Upper Montney Formation in block A in western Canada sedimentary basin[J]. Xinjiang Petroleum Geology, 2021, 42(4): 506-513. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD202104017.htm
[9]	钟红利, 张凤奇, 赵振宇, 等. 致密砂岩储层微观孔喉分布特征及对可动流体的控制作用[J]. 石油实验地质, 2021, 43(1): 77-85. doi: 10.11781/sysydz202101077 ZHONG Hongli, ZHANG Fengqi, ZHAO Zhenyu, et al. Micro-scale pore-throat distributions in tight sandstone reservoirs and its constrain to movable fluid[J]. Petroleum Geology & Experiment, 2021, 43(1): 77-85. doi: 10.11781/sysydz202101077
[10]	张文凯, 施泽进, 田亚铭, 等. 联合高压压汞和恒速压汞实验表征致密砂岩孔喉特征[J]. 断块油气田, 2021, (1): 14-20, 32. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT202101005.htm ZHANG Wenkai, SHI Zejin, TIAN Yaming, et al. The combination of high-pressure mercury injection and rate-controlled mercury injection to characterize the pore-throat structure in tight sandstone reservoirs[J]. Fault-Block Oil and Gas Field, 2021, (1): 14-20, 32. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT202101005.htm
[11]	钟红利, 吴雨风, 张凤奇, 等. 陕北斜坡东南部致密砂岩孔喉分布及其对含油性的影响[J]. 断块油气田, 2021, 28(1): 21-27. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT202101006.htm ZHONG Hongli, WU Yufeng, ZHANG Fengqi, et al. Pore throat distribution of tight sandstone in the southeast of the Northern Shaanxi Slope and its influence on oil-bearing property[J]. Fault-Block Oil and Gas Field, 2021, (1): 21-27. https://www.cnki.com.cn/Article/CJFDTOTAL-DKYT202101006.htm
[12]	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. https://www.cnki.com.cn/Article/CJFDTOTAL-DXQY201602015.htm 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. https://www.cnki.com.cn/Article/CJFDTOTAL-DXQY201602015.htm
[13]	俞雨溪, 王宗秀, 张凯逊, 等. 流体注入法定量表征页岩孔隙结构测试方法研究进展[J]. 地质力学学报, 2020, 26(2): 201-210. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLX202002005.htm YU Yuxi, WANG Zongxiu, ZHANG Kaixun, et al. Advances in quantitative characterization of shale pore structure by using fluid injection methods[J]. Journal of Geomechanics, 2020, 26(2): 201-210. https://www.cnki.com.cn/Article/CJFDTOTAL-DZLX202002005.htm
[14]	TANG Xianglu, JIANG Zhenxue, JIANG Shu, et al. Heterogeneous nanoporosity of the Silurian Longmaxi Formation shale gas reservoir in the Sichuan Basin using the QEMSCAN, FIB-SEM, and nano-CT methods[J]. Marine and Petroleum Geology, 2016, 78: 99-109. http://www.sciencedirect.com/science/article/pii/S0264817216303129
[15]	孔星星, 肖佃师, 蒋恕, 等. 联合高压压汞和核磁共振分类评价致密砂岩储层: 以鄂尔多斯盆地临兴区块为例[J]. 天然气工业, 2020, 40(3): 38-47. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG202003007.htm KONG Xingxing, XIAO Dianshi, JIANG Shu, et al. Application of the combination of high-pressure mercury injection and nuclear magnetic resonance to the classification and evaluation of tight sandstone reservoirs: a case study of the Linxing block in the Ordos Basin[J]. Natural Gas Industry, 2020, 40(3): 38-47. https://www.cnki.com.cn/Article/CJFDTOTAL-TRQG202003007.htm
[16]	王琨, 周航宇, 赖杰, 等. 核磁共振技术在岩石物理与孔隙结构表征中的应用[J]. 仪器仪表学报, 2020, 41(2): 101-114. https://www.cnki.com.cn/Article/CJFDTOTAL-YQXB202002014.htm WANG Kun, ZHOU Hangyu, LAI Jie, et al. Application of NMR technology in characterization of petrophysics and pore structure[J]. Chinese Journal of Scientific Instrument, 2020, 41(2): 101-114. https://www.cnki.com.cn/Article/CJFDTOTAL-YQXB202002014.htm
[17]	焦淑静, 韩辉, 翁庆萍, 等. 页岩孔隙结构扫描电镜分析方法研究[J]. 电子显微学报, 2012, 31(5): 432-436. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXV201205012.htm JIAO Shujing, HAN Hui, WENG Qingping, et al. Scanning electron microscope analysis of porosity in shale[J]. Journal of Chinese Electron Microscopy Society, 2012, 31(5): 432-436. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXV201205012.htm
[18]	WANG Y Z, SUN S Y. Multiscale pore structure characterization based on SEM images[J]. Fuel, 2021, 289: 119915. http://www.sciencedirect.com/science/article/pii/S0016236120329112
[19]	尤源, 牛小兵, 辛红刚, 等. 国外致密油储层微观孔隙结构研究及其对鄂尔多斯盆地的启示[J]. 石油科技论坛, 2013, 32(1): 12-18. https://www.cnki.com.cn/Article/CJFDTOTAL-SYKT201301005.htm YOU Yuan, NIU Xiaobing, XIN Honggang, et al. Research on micro pore structure of overseas tight oil reservoir and its influence on Ordos Basin[J]. Petroleum Science and Technology Forum, 2013, 32(1): 12-18. https://www.cnki.com.cn/Article/CJFDTOTAL-SYKT201301005.htm
[20]	黄兴, 倪军, 李响, 等. 致密油藏不同微观孔隙结构储层CO₂驱动用特征及影响因素[J]. 石油学报, 2020, 41(7): 853-864. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202007009.htm HUANG Xing, NI Jun, LI Xiang, et al. Characteristics and influencing factors of CO₂ flooding in different microscopic pore structures in tight reservoirs[J]. Acta Petrolei Sinica, 2020, 41(7): 853-864. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202007009.htm
[21]	俞凌杰. 中国石化无锡石油地质研究所实验地质技术之基于熔融合金注入的孔隙连通性分析技术[J]. 石油实验地质, 2020, 42(2): F0002. http://www.sysydz.net/article/id/534279fc-bb62-45b7-9bb7-8e50dac01011 YU Lingjie. Pore connectivity analysis based on molten alloy injection, experimental geology technology of Wuxi Research Institute of Petroleum Geology, SINOPEC[J]. Petroleum Geology & Experiment, 2020, 42(2): F0002. http://www.sysydz.net/article/id/534279fc-bb62-45b7-9bb7-8e50dac01011
[22]	QIN Yang, YAO Suping, XIAO Hanmin, et al. Pore structure and connectivity of tight sandstone reservoirs in petroleum basins: a review and application of new methodologies to the Late Triassic Ordos Basin, China[J]. Marine and Petroleum Geology, 2021, 129: 105084.
[23]	汪贺, 师永民, 徐大卫, 等. 非常规储层孔隙结构表征技术及进展[J]. 油气地质与采收率, 2019, 26(5): 21-30. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS201905003.htm WANG He, SHI Yongmin, XU Dawei, et al. Unconventional reservoir pore structure characterization techniques and progress[J]. Petroleum Geology and Recovery Efficiency, 2019, 26(5): 21-30. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS201905003.htm
[24]	田伟, 刘慧卿, 何顺利, 等. 吉木萨尔凹陷芦草沟组致密油储层岩石微观孔隙结构表征[J]. 油气地质与采收率, 2019, 26(4): 24-32. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS201904005.htm TIAN Wei, LIU Huiqing, HE Shunli, et al. Characterization of microscopic pore structure of tight oil reservoirs in Lucaogou Formation, Jimusaer Sag[J]. Petroleum Geology and Recovery Efficiency, 2019, 26(4): 24-32. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCS201904005.htm
[25]	范鹏, 董兆雄, 李君, 等. 孔隙铸模法在碳酸盐岩孔隙结构微观实验研究中的应用[J]. 海相油气地质, 2009, 14(2): 67-70. https://www.cnki.com.cn/Article/CJFDTOTAL-HXYQ200902011.htm FAN Peng, DONG Zhaoxiong, LI Jun, et al. Application of pore mold method in microcosmic experiment of porosity microtexture of carbonate rocks from southern Sichuan-northern Guizhou area[J]. Marine Origin Petroleum Geology, 2009, 14(2): 67-70. https://www.cnki.com.cn/Article/CJFDTOTAL-HXYQ200902011.htm
[26]	张鹏飞, 卢双舫, 李俊乾, 等. 基于扫描电镜的页岩微观孔隙结构定量表征[J]. 中国石油大学学报(自然科学版), 2018, 42(2): 19-28. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDX201802004.htm ZHANG Pengfei, LU Shuangfang, LI Junqian, et al. Quantitative characterization of microscopic pore structure for shales using scanning electron microscopy[J]. Journal of China University of Petroleum (Edition of Natural Science), 2018, 42(2): 19-28. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDX201802004.htm
[27]	赵日新, 卢双舫, 薛海涛, 等. 扫描电镜分析参数对定量评价页岩微观孔隙的影响[J]. 石油与天然气地质, 2019, 40(5): 1141-1154. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201905019.htm ZHAO Rixin, LU Shuangfang, XUE Haitao, et al. Effect of SEM parameters on quantitative evaluation of shale micropores[J]. Oil & Gas Geology, 2019, 40(5): 1141-1154. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201905019.htm
[28]	王坤阳, 杜谷, 杨玉杰, 等. 应用扫描电镜与X射线能谱仪研究黔北黑色页岩储层孔隙及矿物特征[J]. 岩矿测试, 2014, 33(5): 634-639. https://www.cnki.com.cn/Article/CJFDTOTAL-YKCS201405006.htm WANG Kunyang, DU Gu, YANG Yujie, et al. Characteristics study of reservoirs pores and mineral compositions for black shale, northern Guizhou, by using SEM and X-ray EDS[J]. Rock and Mineral Analysis, 2014, 33(5): 634-639. https://www.cnki.com.cn/Article/CJFDTOTAL-YKCS201405006.htm
[29]	李传亮, 朱苏阳, 刘东华. 盖层封堵油气的机理研究[J]. 岩性油气藏, 2019, 31(1): 12-19. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX201901002.htm LI Chuanliang, ZHU Suyang, LIU Donghua. Mechanism of sealing oil and gas with cap-rocks[J]. Lithologic Reservoirs, 2019, 31(1): 12-19. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX201901002.htm
[30]	夏青松, 黄成刚, 陆江. 沉积盆地中油气充注与储集层成岩作用的响应关系[J]. 地球科学与环境学报, 2019, 41(2): 185-196. https://www.cnki.com.cn/Article/CJFDTOTAL-XAGX201902006.htm XIA Qingsong, HUANG Chenggang, LU Jiang. Response relationship between hydrocarbon charging and diagenesis of reservoirs in sedimentary basin[J]. Journal of Earth Sciences and Environment, 2019, 41(2): 185-196. https://www.cnki.com.cn/Article/CJFDTOTAL-XAGX201902006.htm