[1]郭和坤,刘强,李海波,等.四川盆地侏罗系致密储层孔隙结构特征[J].深圳大学学报理工版,2013,30(No.3(221-330)):306-312.[doi:10.3724/SP.J.1249.2013.03306]
　Guo Hekun,Liu Qiang,Li Haibo,et al.Microstructural characteristics of the Jurassic tight oil reservoirs in Sichuan Basin[J].Journal of Shenzhen University Science and Engineering,2013,30(No.3(221-330)):306-312.[doi:10.3724/SP.J.1249.2013.03306]
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四川盆地侏罗系致密储层孔隙结构特征()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第30卷
期数:
2013年No.3(221-330)
页码:
306-312
栏目:
环境与能源
出版日期:
2013-05-19

文章信息/Info

Title:
Microstructural characteristics of the Jurassic tight oil reservoirs in Sichuan Basin
文章编号:
20130314
作者:
郭和坤1; 2; 3; 刘强1; 2; 李海波2; 3; 孟智强1; 2; 白永旺4
1) 中国科学院渗流流体力学研究所，河北 廊坊 065007
2) 中国科学院大学 物理学院，北京 100049
3) 中国石油勘探开发研究院廊坊分院，河北 廊坊 065007
4) 大庆油田采油二厂地质大队，黑龙江 大庆 163000
Author(s):
Guo Hekun1; 2; 3;  Liu Qiang1; 2;  Li Haibo2; 3;  Meng Zhiqiang1; 2;  and Bai Yongwang4
1) Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Science, Langfang 065007, Heibei Province, P.R.China
2) School of Physics, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
3) Research Institute of Petroluem Explortion & Development-Langfang, CNPC, Langfang 065007, Heibei Province, P.R.China
4) Geologic sector of No.2 Oil Production Plant, Petrochina Daqing Oilfield, Daqing 163000, Heilongjiang Province, P.R.China
关键词:
油气层物理; 四川盆地; 致密油藏; 孔隙度; 渗透率; 饱和度; 孔隙结构; 核磁共振
Keywords:
petrophysics;  Sichuan Basin;  tight reservoirs;  porosity;  permeability;  saturation;  pore structure;  nuclear magnetic resonance (NMR)
分类号:
TE 311
DOI:
10.3724/SP.J.1249.2013.03306
文献标志码:
A
摘要:
运用常规岩芯分析法、核磁共振T2弛豫谱法和气水高速离心法，研究四川盆地致密油藏储层孔隙结构特征，得到一系列岩芯饱和水状态及束缚水状态下岩芯T2谱，分析致密油藏储层孔隙结构类型、孔隙度及可动流体饱和度等特征，确定了致密砂岩的渗透率系数C和T2截止值．研究结果表明，T2谱能定性反映岩芯的孔隙类型，致密石灰岩为孔隙型储层和孔隙-裂缝型储层；致密砂岩为孔隙型储层，且以小孔隙为主，中大孔隙为辅，仅少量岩芯发育有微裂缝，改善了储层渗透性；致密砂岩与石灰岩气测孔隙度均值分别为4.88%和1.93%，核磁孔隙度一般小于气测孔隙度与水测孔隙度；流体可动性随渗透率、喉道半径和致密岩心类型等不同而异；致密砂岩和石灰岩的T2截止值、渗透率系数均小于常用值．
Abstract:
The pore structure, porosity, fluid saturation, T2 cut-off values and permeability coefficients for tight formations are studied in this paper in order to discover the microstructural characteristics of the tight reservoirs. A series of experimental methods, including conventional core analysis, nuclear magnetic resonance (NMR), and high-speed centrifugal separation of gas and water, are applied to obtain the T2 spectrum of water-saturated cores and cores under different centrifugal force. It is found that T2 spectrum can indicate the type of pore in cores. The pore type for tight limestone is pore reservoirs and pore-fracture reservoirs. The pore type for tight sandstone is pore reservoirs and the majority of pores are small pores, with some middle or large pores. Only a few cores have micro-fracture which can significantly improve the permeability. The average gas porosity for tight sandstone and tight limestone is 4.88% and 1.93%, respectively. The porosity obtained by NMR is less than gas porosity and water porosity. The average T2 cut-off values for tight sandstone and tight limestone is 4.25 ms and 11.54 ms, respectively. The average permeability coefficient for tight sandstone and tight limestone is 2.35 and 0.22, respectively. The T2 cut-off values and permeability coefficient are both less than the conventional values.

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备注/Memo

备注/Memo:
Received：2013-01-19；Accepted：2013-04-13
Foundation： Special Major Science and Technology of CNPC (2012E-2601-04 )
Corresponding author：Senior engineer Guo Hekun. E-mail: nmrghk69@petrochina.com.cn
Citation：Guo Hekun, Liu Qiang, Li Haibo, et al. Microstructural characteristics of the Jurassic tight oil reservoirs in Sichuan Basin［J］. Journal of Shenzhen University Science and Engineering, 2013, 30(3): 306-312.（in Chinese）
基金项目：中国石油重大科技专项资助项目（2012E-2601-04）
作者简介：郭和坤（1969-），男（汉族），中国石油堪探开发研究院高级工程师. E-mail:nmrghk69@petrochina.com.cn
引文：郭和坤，刘强，李海波，等. 四川盆地侏罗系致密储层孔隙结构特征［J］. 深圳大学学报理工版，2013，30（3）：306-312.
更新日期/Last Update: 2013-05-19