发明授权
- 专利标题: Estimating porosity and fluid volume
- 专利标题(中): 估算孔隙度和流体体积
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申请号: US12886962申请日: 2010-09-21
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公开(公告)号: US08614573B2公开(公告)日: 2013-12-24
- 发明人: Chanh Cao Minh
- 申请人: Chanh Cao Minh
- 申请人地址: US TX Sugar Land
- 专利权人: Schlumberger Technology Corporation
- 当前专利权人: Schlumberger Technology Corporation
- 当前专利权人地址: US TX Sugar Land
- 代理商 Kenneth Liu
- 主分类号: G01V3/00
- IPC分类号: G01V3/00
摘要:
The present disclosure relates to a method to estimate a subsurface formation property. A downhole logging tool is provided and disposed in a wellbore. Multiple measurements of various measurement types are obtained at various depths of investigation using the downhole logging tool. The multiple measurements may include natural gamma ray measurements, density measurements, resistivity measurements, nuclear measurements, and nuclear magnetic resonance measurements. The signal-to-noise ratio of the measured signals is increased using, for example, lateral stacking and multi-shell inversion. The subsurface formation property is estimated using the increased signal-to-noise ratio signals. The subsurface formation property may include porosity, adsorbed gas volume, free gas volume, bound water volume, free water volume, oil volume, and kerogen volume. A fluid analysis may be performed using a multi-dimensional nuclear magnetic resonance technique. Fluids such as water, oil, gas, and oil-based mud in the wellbore may be identified and/or evaluated.
公开/授权文献
- US20110068788A1 ESTIMATING POROSITY AND FLUID VOLUME 公开/授权日:2011-03-24
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