Nuclear Magnetic Resonance Measurements of Original Water Saturation and Mobile Water Saturation in Low Permeability Sandstone Gas

作者：Gao Shu Sheng^*; Ye Li You; Xiong Wei; Guo He Kun; Hu Zhi Ming

来源：Chinese Physics Letters, 2010, 27(12): 128902.

DOI：10.1088/0256-307X/27/12/128902

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.

• 出版日期2010-12
• 单位中国石油天然气股份有限公司勘探开发研究院; 中国石油天然气总公司中国科学院渗流流体力学研究所; 中国地质大学（北京）