SYSTEM AND METHOD FOR RESERVOIR CHARACTERIZATION USING UNDERBALANCED DRILLING DATA |
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| 申请号 | EP08730879 | 申请日 | 2008-02-27 | 公开(公告)号 | EP2129868A4 | 公开(公告)日 | 2015-10-28 |
| 申请人 | PRECISION ENERGY SERVICES INC; STEWART GEORGE; | 发明人 | STEWART GEORGE; | ||||
| 摘要 | In an underbalanced drilling system and method, a change is induced in flowing bottom hole pressure in a wellbore. Data of the surface flow rate of effluent is then measured in response to the induced change. This measured data is obtained using a multi-phase flow meter before a separator of the underbalanced drilling system. Algorithms in computer software analyze the flowing bottomhole pressure and the measured surface flow rate data and determine both permeability and formation pressure for a portion of the wellbore in real-time during the underbalanced drilling operation. Ultimately, portion of the wellbore is characterized with the determined permeability and formation pressure. | ||||||
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