| 发明名称 |
System and Method for Predicting Rock Strength |
| 摘要 |
A system and method to predict rock strength by directly inverting for petrophysical properties. In one embodiment, seismic data is received or obtained from a seismic survey (step 101). The seismic data are then conditioned (step 103) in order to prepare them for an inversion process (step 105). The inversion process has an embedded rock physics model that allows the inversion to be formulated based upon, and thereby outputting or calculating (step 107), petrophysical properties. Rock strength data may then be calculated from the petrophysical properties (step 109). |
| 申请公布号 |
US2015301223(A1) |
申请公布日期 |
2015.10.22 |
| 申请号 |
US201314389956 |
申请日期 |
2013.04.15 |
| 申请人 |
EXXON MOBIL UPSTREAM RESEARCH COMPANY |
发明人 |
Xu Xiaoxia;Liu Enru;Gillard Dominique;Zhu Yaping;Bandyopadhyay Kaushik;Zhou Fuping |
| 分类号 |
G01V99/00;E21B7/00;G06F17/10;G01V1/50 |
主分类号 |
G01V99/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
1. A method for inferring anisotropic rock strength properties from measured geophysical data, comprising:
(a) developing an initial subsurface geologic model for M petrophysical properties that indirectly affect the geophysical data; (b) selecting a reflectivity model; (c) selecting a rock physics model that relates the M petrophysical properties to N geophysical properties that directly affect the geophysical data, wherein M<N; (d) simulating synthetic geophysical data using the initial subsurface geologic model, the rock physics model and the reflectivity model, wherein the M petrophysical properties are obtained from the geologic model and substituted into the rock physics model to compute the N geophysical properties required as input to the reflectivity model; (e) comparing the synthetic geophysical data to the measured geophysical data and quantifying a degree of misfit; (f) updating the initial subsurface geologic model to reduce the misfit; and (g) computing one or more subsurface rock strength properties from the updated subsurface geologic model. |
| 地址 |
Houston TX US |
