砂岩气藏岩石孔喉结构及渗流特征

胡勇; 郭长敏; 徐轩; 焦春艳; 闫永强

doi:10.11781/sysydz201503390

砂岩气藏岩石孔喉结构及渗流特征

doi: 10.11781/sysydz201503390

胡勇^1,2,
郭长敏^1,2,
徐轩^1,2,
焦春艳^1,2,
闫永强³

1.
中国石油勘探开发研究院廊坊分院, 河北廊坊 065007
2. 中国石油天然气成藏与开发重点实验室, 河北廊坊 065007
3. 大庆榆树林油田开发有限责任公司, 黑龙江大庆, 230600

基金项目: 国家科技重大专项"致密砂岩气有效开发评价技术"(2011ZX05013-002)资助.

详细信息

作者简介:
胡勇(1978-),男,博士研究生,高级工程师,从事石油天然气开发与实验研究工作.E-mail:huy69@petrochina.com.cn.

中图分类号: TE122.2⁺3
计量
- 文章访问数: 1043
- HTML全文浏览量: 86
- PDF下载量: 1227
- 被引次数: 0
出版历程
- 收稿日期: 2014-03-18
- 修回日期: 2015-03-24
- 刊出日期: 2015-05-28

Pore throat structure and flow characteristics of sandstone reservoirs

1.
Research Institute of Petroleum Exploration & Development-Langfang, PetroChina, Langfang, Hebei 065007, China
2. Key Laboratory of Gas Reservoir Formation and Development, PetroChina, Langfang, Heibei 065007, China
3. Daqing Yushulin Oilfield Development Co Ltd, Daqing, Heilongjiang 230600, China

摘要

摘要: 以多孔介质中气水两相渗流理论为基础,选择了四川须家河组气藏岩心,其渗透率在(0.002~70.28)×10^-3μm²之间,分别开展了高压压汞、气水相渗以及气藏衰竭开采物理模拟实验研究,从岩石孔喉结构、受力特征以及气水两相渗流特征3方面对比分析了致密与中高渗砂岩气藏特征的差异。采用孔喉类型及数量比例、平均孔喉半径、孔喉中值半径3项参数对不同渗透率砂岩孔喉结构特征进行了精细描述,对比分析了低渗致密与常规及高渗砂岩孔喉结构特征差异;采用排驱压力、沿程阻力量化评价了气、水在不同渗透率砂岩中渗流时的受力情况,对比分析了孔喉结构对致密与常规砂岩产能的影响;建立了气相渗流能力与含水饱和度关系图版,对比分析了含水饱和度大小对不同渗透率岩心气相渗流能力的影响。研究成果将为气藏储层微观建模以及气、水渗流机理研究提供一定的参考依据。
- 砂岩气藏 /
- 渗透率 /
- 孔喉结构 /
- 气水相渗 /
- 实验研究
Abstract: Mercury injection testing, gas-water relative permeability testing and physical simulation experiments of gas reservoir depletion were carried out with cores from the Xujiahe Formation in the Sichuan Basin (permeability: 0.002-70.28 mD). The differences between tight sand gas reservoirs and high permeability gas reservoirs of the pore structure characteristics, force characteristics and gas-water relative permeability characteristics were analyzed. The approach was as follows: (1) The pore structure characteristics of sandstones with different permeability were described by three parameters: pore throat ratio, average throat radius and median throat radius, and the pore structure characteristic differences between tight sand gas reservoirs and high permeability gas reservoirs were comparatively analyzed. (2) The force situations of gas and water flowing in the sandstones with different permeability were quantitatively evaluated by threshold pressure and frictional drag, and the impacts of pore structure on the capacities of tight sand gas reservoirs and high permeability gas reservoirs were analyzed. (3) The relation diagram of gas relative permeability and water saturation were derived, and the impact of water saturation on the gas relative permeability of cores with different permeability was analyzed. The research results will provide a reference for gas reservoir microcosmic modeling and the study of gas and water percolation mechanism.
- sandstone gas reservoir /
- permeability /
- pore structure /
- gas-water relative permeability /
- experimental study

HTML全文

参考文献(15)

[1]	贾承造,郑民,张永峰.中国非常规油气资源与勘探开发前景[J].石油勘探与开发,2012,39(2):129-136. Jia Chengzao,Zheng Min,Zhang Yongfeng.Unconventional hydrocarbon resources in China and the prospect of exploration and development[J].Petroleum Exploration and Development,2012,39(2):129-136.
[2]	戴金星,倪云燕,吴小奇.中国致密砂岩气及在勘探开发上的重要意义[J].石油勘探与开发,2012,39(3):257-264. Dai Jinxing,Ni Yunyan,Wu Xiaoqi.Tight gas in China and its significance in exploration and exploitation[J].Petroleum Exploration and Development,2012,39(3):257-264.
[3]	赵文智,卞从胜,徐兆辉.苏里格气田与川中须家河组气田成藏共性与差异[J].石油勘探与开发,2013,40(4):400-408. Zhao Wenzhi,Bian Congsheng,Xu Zhaohui.Similarities and differences between natural gas accumulations in Sulige gas field in Ordos Basin and Xujiahe gas field in central Sichuan Basin[J].Petroleum Exploration and Development,2013,40(4):400-408.
[4]	胡勇,李熙喆,万玉金,等.致密砂岩气渗流特征物理模拟[J].石油勘探与开发,2013,40(5):580-584. Hu Yong,Li Xizhe,Wan Yujin,et al.Physical simulation on gas percolation in tight sandstone[J].Petroleum Exploration and Development,2013,40(5):580-584.
[5]	胡勇,邵阳,陆永亮,等.低渗气藏储层孔隙中水的赋存模式及对气藏开发的影响[J].天然气地球科学,2011,22(1):176-181. Hu Yong,Shao Yang,Lu Yongliang,et al.Experimental study on occurrence models of water in pores and the influencing to the development of tight gas reservoir[J].Natural Gas Geoscience,2011,22(1):176-181.
[6]	胡勇.气体渗流启动压力实验测试及应用[J].天然气工业,2010,30(11):48-50. Hu Yong.Experimental test analysis of threshold pressure in tight sandstone gas flow:A case study of the Sulige gas field[J].Natural Gas Industry,2010,30(11):48-50.
[7]	胡勇,朱华银,万玉金,等.大庆火山岩孔隙结构及气水渗流特征[J].西南石油大学学报,2007,29(5):63-65. Hu Yong,Zhu Huayin,Wan Yujin,et al.The pore structure and the properties of water-gas flowing through porous media in a volcanic rock in Daqing[J].Journal of Southwest Petroleum University,2007,29(5):63-65.
[8]	胡作维,李云.基于偏最小二乘法评价低渗透砂岩储层质量[J].特种油气藏,2013,20(5):36-39. Hu Zuowei,Li Yun.Based on partial least squares evaluation of low permeability sandstone reservoir quality[J].Special Oil & Gas Reservoirs,2013,20(5):36-39.
[9]	杨正明,姜汉桥,朱光亚,等.低渗透含水气藏储层评价参数研究[J].石油学报,2008,29(2):252-255. Yang Zhengming,Jiang Hanqiao,Zhu Guangya,et al.Research on reservoir evaluation index for low-permeability water-bearing gas reservoir[J].Acta Petrolei Sinica,2008,29(2):252-255.
[10]	邹才能,朱如凯,白斌,等.中国油气储层中纳米孔喉首次发现及其科学价值[J].岩石学报,2011,27(6):1857-1864. 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.
[11]	肖开华,冯动军,李秀鹏.川西新场须四段致密砂岩储层微观孔喉与可动流体变化特征[J].石油实验地质,2014,36(1):77-82. Xiao Kaihua,Feng Dongjun,Li Xiupeng.Micro pore and throat characteristics and moveable fluid variation of tight sandstone in 4th member of Xujiahe formation,Xinchang gas field,western Sichuan Basin[J].Petroleum Geology & Experiment,2014,36(1):77-82.
[12]	王瑞飞,沈平平,宋子齐,等.特低渗透砂岩储层油藏储层微观孔喉特征[J].石油学报,2009,30(4):560-563. Wang Ruifei,Shen Pingping,Song Ziqi,et al.Characteristics of micro-pore throat in ultra-low permeability sandstone reservoir[J].Acta Petrolei Sinica,2009,30(4):560-563.
[13]	林晓英,郭春阳,曾溅辉,等.低渗透砂岩天然气运移和聚集模拟实验[J]石油实验地质,2014,36(3):370-375. Lin Xiaoying,Guo Chunyang,Zeng Jianhui,et al.Experimental study on gas migration and accumulation in low-permeability sandstone reservoirs[J].Petroleum Geology & Experiment,2014,36(3):370-375.
[14]	马勇,钟宁宁,程礼军,等.渝东南两套富有机质页岩的孔隙结构特征:来自FIB-SEM的新启示[J].石油实验地质,2015,37(1):109-116. Ma Yong,Zhong Ningning,Cheng Lijun,et al.Pore structure of two organic-rich shales in southeastern Chongqing area:insight from Focused Ion Beam Scanning Electron Microscope (FIB-SEM)[J].Petroleum Geology & Experiment,2015,37(1):109-116.
[15]	国家发展和改革委员会.SY/T 5345—2007 岩石中两相相对渗透率测定方法[S].北京:石油工业出版社,2007. SY/T 5345—2007 Test method for two phase relative permeabi-lity in rock[S].Beijing:Petroleum Industry Press,2007.