|
|
Experimental Study of the NMR Characteristics of Shale Reservoir Rock |
SUN Junchang1, CHEN Jingping2, YANG Zhengming1,3, LIU Xuewei3, LIU Yuanjun4 |
1. Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences, Langfang 065007, Hebei Province, China;2. The First Operation Department, The Second Mud Logging Branch, CNPC Bohai Drilling Engineering Company Limited, Langfang 065007, Hebei Province, China;3. Langfang Branch, Research Institute of Petroleum Exploration and Development of CNPC, Langfang 065007, Hebei Province, China;4. Engineering & Technology College, Yangtze University Jingzhou 434023, Hubei Province, China |
|
|
Abstract: It is very important to systematically study the NMR characteristics of the shale core sample before the NMR logging technology can be used in the development of the shale gas reservoir. This paper studies the NMR characteristics, the NMR porosity, the movable fluid T2cutoff and other NMR properties of the shale rock sample. The experimental results demonstrate that the shale T2 spectrum can be divided into three types, the single peak T2 spectrum, the two peak T2 spectrum containing one isolated right peak and the two peak T2 spectrum containing continuous left and right peaks. The T2 relaxation of the shale is mostly less than 10ms. The fracture porosity is only about 9.16% of the total pore space. The surface area per unit volume of the shale gas reservoir ranges mainly from 3.59 to 80.51μm-1. The shale NMR porosity is generally less than its conventional porosity. The average error is about 22.33%. The movable fluid T2cutoff value is in the range from 3.87 to 16.68ms and its average value is 8.29ms. The free gas saturation of the shale gas reservoir obtained from the centrifugal experiment is about 9.72%.
|
Received: 03 April 2011
|
|
|
|
|
[1] |
WUSHUER Palidan, HIZBILLA Mawlanjan, AMAT Nurmuhammat, UPUR Halmurat. Serum Metabonomic Study of Alzheimer's Disease Rat Models with Abnormal Savda Syndrome[J]. journal1, 2014, 32(28/29): 39-47. |
[2] |
ZHANG Qiaoliang, CHU Shasha, JIANG Ping, XU Yueming, PENG Wenfeng, LI Ming. Microscopic Structural and Seepage Characteristics of Reservoirs in the Group of L WZF4 Oilfield[J]. journal1, 2014, 32(12): 54-59. |
[3] |
CHEN Qiao, TAN Yanhu, WANG Lisha, WANG Sen, LIAO Kaigui, LIU Hong, YAO Guanghua, WANG Qijun, YANG Bo. Reservoir Physical Characteristics of Shale Gas in Longmaxi Formation in Southeastern Chongqing[J]. journal1, 2013, 31(36): 15-19. |
[4] |
ZHOU Keping, AI Kaiming, ZHANG Jian, LI Jielin. Nuclear Magnetic Rresonance Characteristics in Fresh Filling Slurry[J]. journal1, 2013, 31(36): 50-53. |
[5] |
XU Weifang;UPUR Halmurat;LI Fengsen;MAMTIMIN Batur;YANG Jian;AIZEZI Renaguli;WU Xiaohua;GA Lijuan. Common Characteristics of COPD of Traditional Chinese Medicine Kidney Depletion-phlegm-stasis Syndrome and Uygur Medicine Abnormal Savda Syndrome Based on Metabonomics[J]. , 2013, 31(24): 55-61. |
[6] |
YOU Li;MAMTIMIN Batur;UPUR Halmurat. Serum Metabonomics Research on Shenxu-tanyu Syndrome Type 2 Diabetes Mellitus Based on NMR[J]. , 2012, 30(8): 25-29. |
|
|
|
|