Comprehensive time depth calibration method and device

Abstract

The invention provides a comprehensive time depth calibration method and device. The method comprises the steps that: inter-well stratum comparison is carried out according to the logging curve of each well, and the breakpoint positions and fault distances of the breakpoint of each well are obtained; the logging curve, the breakpoint positions and the fault distances are inputted into an interpretation system, so that a synthetic seismic record can be obtained; well-to-seismic calibration is carried out according to wave resistance characteristics and the synthetic seismic record, and a time depth calibration result is obtained; the time depth calibration result, the breakpoint positions and the fault distances are put into a seismic section, the goodness of fit between the breakpoints ofeach well and seismic breakpoints is determined, the goodness of fit between the fault distances of the breakpoints of each well and the fault distances of a seismic hanging wall and a seismic footwall is determined; and the synthetic seismic record is adjusted according to the wave resistance characteristics until the goodness of fit between the breakpoints of each well and the seismic breakpoints and the goodness of fit between the fault distances between the seismic hanging wall and the seismic footwall and the fault distances of the breakpoints of each well reach preset values. The resultof the method can meet the requirements of geophysicians for reservoir prediction of structural interpretation, and subsequent results can be provided for oil reservoir scientists to analyze oil reservoir results.

Description

technical field [0001] The invention relates to the professional field of geophysical exploration, in particular to a comprehensive time-depth calibration method and device. Background technique [0002] In oil exploration, seismic exploration is the most important means of obtaining oil and gas discovery. Seismic acquisition signals are time-domain data, while drilling receipts are depth-domain data. In order to find out the correspondence between seismic and drilling, time-depth calibration is required. Calibration The quality of the relationship will have a great impact on the structural interpretation and reservoir prediction results, and ultimately affect the correct understanding of the reservoir relationship and the successful implementation of subsequent drilling. Commonly used geophysical methods fall into two categories: first, bridge connection of VSP data, also known as corridor stacking; second, calibration of synthetic seismic records. These two methods can be...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the current calibration method inaccurate, error-prone and other problems, the embodiment of the present invention provides a comprehensive time-depth calibration method, the method includes:

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