Nuclear Magnetic Resonance Measurements of Original Water Saturation and Mobile Water Saturation in Low Permeability Sandstone Gas
GAO Shu-Sheng1,2**, YE Li-You3, XIONG Wei1, GUO He-Kun1, HU Zhi-Ming1
1Research Institute of Petroleum Exploration and Development-Langfang, Langfang 065007 2School of Energy Resources, China University of Geosciences, Beijing 100083 3Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences, Langfang 065007
Nuclear Magnetic Resonance Measurements of Original Water Saturation and Mobile Water Saturation in Low Permeability Sandstone Gas
GAO Shu-Sheng1,2**, YE Li-You3, XIONG Wei1, GUO He-Kun1, HU Zhi-Ming1
1Research Institute of Petroleum Exploration and Development-Langfang, Langfang 065007 2School of Energy Resources, China University of Geosciences, Beijing 100083 3Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences, Langfang 065007
摘要We use nuclear magnetic resonance (NMR) and centrifugation to measure the original water saturation and mobile water saturation of cores from the Xujiahe low permeability sandstone gas reservoir, and compare the NMR results with the corresponding field data. It is shown that the NMR water saturation after 300 psi centrifugation effectively represents the original water saturation measured by weighing fresh cores. There is a good correlation between mobile water saturation and the water production performance of the corresponding gas wells. The critical mobile water saturation whether reservoir produces water of the Xujiahe low permeability sandstone gas is 6%. The higher the mobile water saturation, the greater the water production rate of gas well. This indicates that well's water production performance can be forecasted by mobile water saturation of cores.
Abstract：We use nuclear magnetic resonance (NMR) and centrifugation to measure the original water saturation and mobile water saturation of cores from the Xujiahe low permeability sandstone gas reservoir, and compare the NMR results with the corresponding field data. It is shown that the NMR water saturation after 300 psi centrifugation effectively represents the original water saturation measured by weighing fresh cores. There is a good correlation between mobile water saturation and the water production performance of the corresponding gas wells. The critical mobile water saturation whether reservoir produces water of the Xujiahe low permeability sandstone gas is 6%. The higher the mobile water saturation, the greater the water production rate of gas well. This indicates that well's water production performance can be forecasted by mobile water saturation of cores.
GAO Shu-Sheng;**;YE Li-You;XIONG Wei;GUO He-Kun;HU Zhi-Ming
. Nuclear Magnetic Resonance Measurements of Original Water Saturation and Mobile Water Saturation in Low Permeability Sandstone Gas[J]. 中国物理快报, 2010, 27(12): 128902-128902.
GAO Shu-Sheng, **, YE Li-You, XIONG Wei, GUO He-Kun, HU Zhi-Ming
. Nuclear Magnetic Resonance Measurements of Original Water Saturation and Mobile Water Saturation in Low Permeability Sandstone Gas. Chin. Phys. Lett., 2010, 27(12): 128902-128902.
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2010, Vol. 27 
