库车坳陷迪北地区致密砂岩孔喉形态特征及其对储层的影响

林潼; 冉启贵; 魏红兴; 孙雄伟; 王蓉

doi:10.11781/sysydz201506696

库车坳陷迪北地区致密砂岩孔喉形态特征及其对储层的影响

doi: 10.11781/sysydz201506696

1.
中化石油勘探开发有限公司, 北京 100031
2. 中国石油勘探开发研究院廊坊分院, 河北廊坊 065007
3. 中国石油塔里木油田分公司勘探开发研究院, 新疆库尔勒 841000

基金项目: 国家重大科技专项"中国大型气田形成条件、富集规律及目标评价(二期)"项目(2011ZX05007)资助。

详细信息

作者简介:
林潼(1980—),男,工程师,从事储层分析与油气成藏研究。E-mail:lintong1980@163.com

中图分类号: TE122.2
计量
- 文章访问数: 888
- HTML全文浏览量: 61
- PDF下载量: 1158
- 被引次数: 0
出版历程
- 收稿日期: 2014-10-31
- 修回日期: 2015-09-18
- 刊出日期: 2015-11-28

Pore-throat characteristics of tight sandstones and its influence on reservoirs in Dibei area of the Kuqa Depression

1.
Sinochem Petroleum E & P Co Ltd, Beijing 100031, China
2. Research Institute of Petroleum Exploration and Development-Langfang, PetroChina, Langfang, Hebei 065007, China
3. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Kuerle, Xinjiang 834000, China

摘要

摘要: 通过铸体薄片、扫描电镜、激光共聚焦显微镜、微纳米CT扫描等直观分析手段,对库车坳陷迪北地区致密砂岩气储层中的孔喉微观形态特征开展了系统研究。观测结果显示,该区致密砂岩储层中发育大量的狭长、扁平状孔喉,其中微纳米级的喉道、黏土矿物晶间孔是本区主要的储集空间。同时借助低温氮气吸附测试、恒速压汞试验、覆压条件下储层物性分析等定量研究手段,显示迪北致密砂岩储层中喉道大小分布在1~4μm,喉道体积占总孔隙体积的2/3。综合研究认为储层的渗流能力受喉道大小、孔喉比值影响,直观地反映了孔喉形态对渗流能力的影响;孔喉中黏土矿物对储层的渗流能力起到重要的影响。
- 致密砂岩 /
- 激光共聚焦显微镜 /
- 喉道半径 /
- 孔喉比 /
- 孔喉形态 /
- 迪北地区 /
- 库车坳陷
Abstract: The pore-throat characteristics of tight sandstones from Dibei area of the Kuqa Depression were studied using cast thin section, scanning electron microscope, laser scanning confocal microscope and micro/nano CT analyses. A large amount of long, narrow and flat pore-throats were observed. Micro/nano throats and intercrystal pores in clay minerals are the most common in reservoirs. According to nitrogen adsorption, constant velocity mercury injection, and physical property analyses under overburden pressure, the throat radius ranges from 1 to 4μm, accounting for about 2/3 of the total reservoir space. The fluid flow in tight reservoirs is directly influenced by throat radius and pore/throat ratio. Clay minerals in pore-throats control fluid mobility.
- tight sandstone /
- laser scanning confocal microscope /
- throat radius /
- pore/throat ratio /
- pore-throat chara-cteristics /
- Dibeiarea /
- Kuqa Depression

HTML全文

参考文献(30)

[1]	Nelson P H.Pore-throat sizes in sandstones,tight sandstones,and shales[J].AAPG Bulletin,2009,93(3):329-340.
[2]	孙军昌,郭和坤,刘卫,等.低渗致密火山岩气藏微观孔喉特征[J].断块油气田,2010,17(5):548-552. Sun Junchang,Guo Hekun,Liu Wei,et al.Characteristics of micro pore-throat in low permeability volcanic gas reservoir[J].Fault-Block Oil & Gas Field,2010,17(5):548-552.
[3]	Katz A J,Thompson A H.Quantitative prediction of permeability in porous rock[J].Physical Review B,1986,34(11):8179-8181.
[4]	程超,鹿克峰,何贤科,等.基于压汞资料R₃₅的定量储层分类评价与特征研究:以X气田E15层为例[J].石油天然气学报,2014,36(11):16-20. Cheng Chao,Lu Kefeng,He Xianke,et al.Based on the R₃₅ of mercury injection data to quantitative classification evaluation and reservoir characteristics:A case study of E15 layer in X field[J].Journal of Oil and Gas Technology,2014,36(11):16-20.
[5]	林潼,易士威,叶茂林,等.库车坳陷东部致密砂岩气藏发育特征与富集规律[J].地质科技情报,2014,33(2):116-122. Lin Tong,Yi Shiwei,Ye Maolin,et al.Characteristic of tight sandstone gas reservoir and the enrichment regularity in eastern Kuqa Depression[J].Geological Science and Technology Information,2014,33(2):116-122.
[6]	Slatt R M,O'Brien N R.Pore types in the Barnett and Woodford gas shales:Contribution to understanding gas storage and migration pathways in fine-grained rocks[J].AAPG Bulletin,2011,95(12):2017-2030.
[7]	Nelson P H.Pore-throat sizes in sandstones,siltstones,and shales:Reply[J].AAPG Bulletin,2011,95(8):1448-1453.
[8]	Pittman E D.Relationship of porosity and permeability to various parameters derived from mercury injection-capillary pressure curves for sandstone[J].AAPG Bulletin,1992,76(2):191-198.
[9]	李传亮.孔喉比对地层渗透率的影响[J].油气地质与采收率,2007,14(5):78-79. Li Chuanliang.Effect of pore-throat ratio on reservoir permeability[J].Petroleum Geology and Recovery Efficiency,2007,14(5):78-79.
[10]	Clarkson C R,Jensen J L,Pedersen P K,et al.Innovative methods for flow-unit and pore-structure analyses in a tight siltstone and shale gas reservoir[J].AAPG Bulletin,2012,96(2):355-374.
[11]	Aguilera R.Incorporating capillary pressure,pore throat aperture radii,height above free-water table,and Winl and r₃₅ values on Pickett plots[J].AAPG Bulletin,2002,86(4):605-624.
[12]	Soeder D J,Chowdiah P.Pore geometry in high-and low-permeability sandstones,Travis Peak Formation,east Texas[J].SPE 17729,1990,5(4):421-430.
[13]	Soeder D J,Randolph P L.Porosity,permeability,and pore structure of the tight Mesaverde Sandstone,Piceance Basin,Colorado[J].SPE 13134,1987,2(2):129-136.
[14]	Deng H,Leguizamon J,Aguilera R.Petrophysics of triple porosity tight gas reservoirs with a link to gas productivity[J].SPE144590,2011,14(5):566-577.
[15]	李丕龙.塔里木盆地构造沉积与成藏[M].北京:地质出版社,2010. Li Pilong.Tectonic sedimentary and accumulation in Tarim Basin[M].Beijing:Geological Publishing House,2010.
[16]	阎福礼,卢华复,贾东,等.塔里木盆地库车坳陷中、新生代沉降特征探讨[J].南京大学学报:自然科学版,2003,39(1):31-39. Yan Fuli,Lu Huafu,Jia Dong.et al.The Meso-Cenozoic subsi-dence features of Kuqa depression,Tarim Basin[J].Journal of Nanjing University:Natural Sciences,2003,39(1):31-39.
[17]	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. 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.
[18]	白斌,朱如凯,吴松涛,等.利用多尺度CT成像表征致密砂岩微观孔喉结构[J].石油勘探与开发,2013,40(3):329-333. Bai Bin,Zhu Rukai,Wu Songtao,et al.Multi-scale method of Nano(Micro)-CT study on microscopic pore structure of tight sandstone of Yanchang Formation,Ordos Basin[J].Petroleum Exploration and Development,2013,40(3):329-333.
[19]	孙卫,史成恩,赵惊蛰,等.X-CT扫描成像技术在特低渗透储层微观孔隙结构及渗流机理研究中的应用:以西峰油田庄19井区长8₂储层为例[J].地质学报,2006,80(5):775-779. Sun Wei,Shi Chengen,Zhao Jingzhe,et al.Application of X-CT scanned image technique in the research of micro-pore texture and percolation mechanism in ultra-permeable oil field:taking an example from chang 8₂ formation in the Xifeng oil field[J].Acta Geologica Sinica,2006,80(5):775-779.
[20]	Lowell S,Shields J E.Powder surface area and porosity[M].New York:Chapman& Hall,2003.
[21]	何顺利,焦春艳,王建国,等.恒速压汞与常规压汞的异同[J].断块油气田,2011,18(2):235-237. He Shunli,Jiao Chunyan,Wang Jianguo,et al.Discussion on the differences between constant-speed mercury injection and conventional mercury injection techniques[J].Fault-Block Oil & Gas Field,2011,18(2):235-237.
[22]	杨峰,宁正福,张世栋,等.基于氮气吸附实验的页岩孔隙结构表征[J].新能源,2013,33(4):135-140. Yang Feng,Ning Zhengfu,Zhang Shidong,et al.Characterization of pore structures in shales through nitrogen adsorption experiment[J].New energy,2013,33(4):135-140.
[23]	Loucks R G,Reed R M,Ruppel S C,etal.Morphology,genesis, and distribution of nanometer-scale pores in siliceous mudstones of the Mississippian Barnett Shale[J].Journal of Sedimentary Research,2009,79(12):848-861.
[24]	高永利,张志国.恒速压汞技术定量评价低渗透砂岩孔喉结构差异性[J].地质科技情报.2011,30(4):73-76. Gao Yongli,Zhang Zhiguo.Valuation on difference of pore throat structure of low permeability sandstone by constsp mercury pe-netration technique[J].Geological Science and Technology Information,2011,30(4):73-76.
[25]	高辉,解伟,杨建鹏,等.基于恒速压汞技术的特低-超低渗砂岩储层微观孔喉特征[J].石油实验地质,2011,33(2):206-211,214. Gao Hui,Xie Wei,Yang Jianpeng,et al.Pore throat characteristics of extra-ultra low permeability sandstone reservoir based on constant-rate mercury penetration technique[J].Petroleum Geology & Experiment,2011,33(2):206-211,214.
[26]	纪发华,张一伟.分形几何学在储层非均质性描述中的应用[J].石油大学学报:自然科学版,1994,18(5):161-168. Ji Fahua,Zhang Yiwei.Application of fractal geometry in description of heterogeneity[J].Journal of the University of Petroleum,China,1994,18(5):161-168.
[27]	马立民,林承焰,范梦玮.基于微观孔隙结构分形特征的定量储层分类与评价[J].石油天然气学报,2012,34(5):15-19. Ma Limin,Lin Chengyan,Fan Mengwei.Quantitative classification and evaluation of reservoirs based on fractal features of micro-pore structures[J].Journal of Oil and Gas Technology,2012,34(5):15-19.
[28]	张婷,徐守余,杨珂.储层微观孔隙结构分形维数应用[J].大庆石油学院学报,2010,34(3):44-47. Zhang Ting,Xu Shouyu,Yang Ke.Application of fractal dimension of micro-pore structure[J].Journal of Daqing Petroleum Institute,2010,34(3):44-47.
[29]	何更生.油层物理[M].北京:石油工业出版社,1993:34-37. He Gengsheng.Reservoirphysics[M].Beijing:Petroleum Industry Press,1993:34-37.
[30]	Kilmer N H,Morrow N R,Pitman J K.Pressure sensitivity of low permeability sandstones[J].Journal of Petroleum Science and Engineering,1987,1(1):65-81.