发明名称 |
MULTI-ATTRIBUTE SEISMIC CHARACTERIZATION OF GAS HYDRATES |
摘要 |
An appropriate rock physics model is chosen from well-log data and/or experience (610). The rock physics model is then used to generate (612) a plurality of attribute values, including compression and shear velocities, at different porosities and gas hydrate saturations. Gas hydrates are classified into different ranges of porosity and hydrate saturation based on the population of multiple attributes, and probability density functions for each individual gas hydrate class are created (614). Probability density distribution functions for individual attributes and a joint conditional probability density functions are created (618) using a Bayesian function. The conditional probability of the occurrences of gas hydrate classes given a set of values of the chosen attributes derived from seismic inversion and or well measurements is inverted. Finally, a maximum a-posteriori (MAP) rule is employed to obtain the optimal porosity and hydrate saturation estimation (618). This information may be used to make decisions regarding management of the well site and the subsurface hydrate resources |
申请公布号 |
WO2008157737(A3) |
申请公布日期 |
2009.06.11 |
申请号 |
WO2008US67568 |
申请日期 |
2008.06.19 |
申请人 |
SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;DAI, JIANCHUN;BANIK, NIRANJAN |
发明人 |
DAI, JIANCHUN;BANIK, NIRANJAN |
分类号 |
G01V1/30 |
主分类号 |
G01V1/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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