Method for improving precision of static correction by uphole time
The invention provides a method for improving the precision of static correction by uphole time in seismic exploration, which comprises the following steps: collecting and recording the uphole time, rejecting abnormal values, and directly calculating the static correction of a shot point by the upho...
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| creator | ZHAO XIANZHENG TANG CHUANZHANG DENG ZHIWEN CUI SHITIAN BAI XUMING QIU YI |
| description | The invention provides a method for improving the precision of static correction by uphole time in seismic exploration, which comprises the following steps: collecting and recording the uphole time, rejecting abnormal values, and directly calculating the static correction of a shot point by the uphole time through a known surface thickness and speed model; and when the field surface survey data is less or none and the known surface thickness and speed model does not exist, extracting the depth and the uphole time of each excitation well, calculating an equivalent average speed, establishing a high-density surface thickness and speed model, and calculating the static correction. The method directly utilizes the uphole time to improve the precision of the static correction and optimize a calculation result of the static correction of the shot point, and can also establish a high-precision static correction calculating model through the uphole time in a work area where surface survey control points are fewer or |
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| subjects | DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS TESTING |
| title | Method for improving precision of static correction by uphole time |
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