Lithologic Reservoirs ›› 2007, Vol. 19 ›› Issue (4): 40-44.doi: 10.3969/j.issn.1673-8926.2007.04.007

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Micro-fractures in extra-low permeability reservoir of Yanchang Formation in Ordos Basin

NAN Junxiang 1, 2, WANG Surong2, YAO Weihua2, LU Yan2   

  1. 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
    2. Research Institute of Petroleum Exploration and Development, Changqing Oilfield Company, PetroChina, Xi’an 710021, China
  • Online:2007-12-15 Published:2007-12-15

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Abstract:

Micro- fracture is one of the main flow passages for low permeability reservoir. The reservoir of Yanchang Formation in Longdong area is extra- low permeability reservoir. By using the frequency analysis methods such as polarizing microscope and SEM, the occurrence, features, surface density, planar distribution rules and the contribution to permeability of the micro- fractures are analyzed. It points out that the microfractures are widely developed in this area and controlled by factors of sedimentation, diagenesis, tectonic lateral compression, mineral component, structural tectonics, hidden fracture of underlying strata and so on. The surface density of the micro- fracture is closely related to the permeability. Micro- fracture is the key factor which should be considered in oilfield development and deployment.

Key words: nuclear magnetic resonance logging , dual-TE , intrinsic relaxation time T2int , hydrocarbon saturation

[ 1] 蒋凌志, 顾家裕, 郭彬程.中国含油气盆地碎屑岩低渗透储层的特征及形成机理[ J] .沉积学报, 2004, 22( 1) : 13- 18.
[ 2] 郑荣才, 王昌勇, 李虹, 等.鄂尔多斯盆地白豹—华池地区长6油层组物源区分析[ J] .岩性油气藏, 2007, 19( 1) : 32- 38.
[ 3] 郑荣才, 耿威, 周刚, 等.鄂尔多斯盆地白豹地区长6 砂岩成岩作用与成岩相研究[ J] .岩性油气藏, 2007, 19( 2) : 1- 8.
[ 4] 李元成, 王铁成.柴达木盆地狮子沟地区中深层裂缝性油藏[ J] .石油勘探与开发, 2001, 28(6): 12- 15.
[ 5] 拉尔逊R A.天然裂缝性储层的地质分析[M] .北京: 石油工业出版社, 1988: 142- 157.
[ 6] 王允诚.裂缝性致密储集层[M] .北京: 地质出版社, 1992.
[ 7] 王平.有天然裂缝的砂岩油藏的开发[ J] .石油学报, 1993, 14( 4) : 69- 74.
[ 8] 张莉, 岳乐平.鄯善油田裂缝特征及形成时期[ J] .西北大学学报, 1999, 20( 2) : 153- 155.
[ 9] 张莉.陕甘宁盆地储层裂缝特征及形成的构造应力场分析[ J] .地质科技情报, 2003, 22( 2) : 21- 24.
[ 10] 曾联波, 李忠兴, 史成恩, 等.鄂尔多斯盆地上三叠统延长组特低渗透砂岩储层裂缝特征及成因[ J] .地质学报, 2007, 81( 2) :174- 180.
[ 11] 郭沫贞, 朱国华, 寿建峰, 等.碎屑岩压碎缝的特征、成因与油气勘探意义[ J] .沉积学报, 2006, 24(4): 483- 487.
[ 12] 李皋, 孟英峰, 董兆雄, 等.砂岩储集层微波加热产生微裂缝的机理及意义[ J] .石油勘探与开发, 2007, 34( 1) : 93- 97.
[ 13] 张小莉, 冯乔, 程玉群, 等.志丹探区延长组储集层裂缝特征及其意义[ J] .西北地质, 1998, 19(3): 24- 27.
[ 14] 王景, 凌升阶, 南中虎.特低渗透砂岩微裂缝分布研究方法探索[ J] .石油勘探与开发, 2003, 30( 2) : 51- 53.
[ 15] 赵文智, 胡素云, 汪泽成, 等.鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用[J] .石油勘探与开发, 2003, 30( 5) : 1- 5.
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