A method, device and system for time matching of longitudinal wave converted wave seismic data
A technology of seismic data and time matching, applied in the direction of seismic signal processing, etc., can solve the problem of large error and achieve the effect of improving efficiency and accuracy
Active Publication Date: 2019-11-08
BC P INC CHINA NAT PETROLEUM CORP +1
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The traditional solution is to time match the longitudinal wave and the converted wave seismic section through the method of manual interactive interpretation in the time domain, but this method is based on the empirical knowledge of the underground strata in the exploration area, and the error is relatively large
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[0055] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification Obviously, the described embodiments are only some of the embodiments in the description, not all of them. Based on one or more embodiments in the description, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the embodiments of the description.
[0056] The time matching problem of P-wave and converted-wave seismic sections is due to the asymmetry of the converted-wave propagation path (refer to figure 2 ), which makes it difficult to interpret oil and gas reservoirs by combining seismic data of P-wave and converted-wave. Because the propagation speeds of seismic P-...
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The embodiment of the invention discloses a method, device and system for seismic data time matching of longitudinal wave and converted wave. The method for seismic data time matching of longitudinalwave and converted wave comprises time-depth conversion of the original time-domain seismic data of longitudinal wave and converted wave, respectively, to obtain the depth-domain seismic data of longitudinal wave and converted wave, respectively calculating the seismic energy data of the longitudinal wave and the converted wave in the depth domain according to the depth domain seismic data of thelongitudinal wave and the converted wave; carrying out depth correction processing on the depth domain seismic data of the converted wave based on the preset maximum correlation rule of the earthquakeenergy data volume of the longitudinal wave and the converted wave at the same depth; and converting the depth domain seismic data of the converted wave after the depth correction processing into thelongitudinal wave time domain to obtain the converted wave time domain seismic data after time matching. With the various embodiments of the seismic data time matching of longitudinal wave and converted wave, the efficiency and the accuracy of time matching of the longitudinal wave and converted wave seismic data can be improved.
Description
technical field [0001] The invention relates to the technical field of petroleum and natural gas seismic exploration, in particular, to a method, device and system for time matching of longitudinal wave converted wave seismic data. Background technique [0002] In recent years, converted wave seismic exploration technology has shown a rapid development trend in the world. This technology has a good application prospect in lithologic reservoirs, subtle reservoirs, unconventional reservoirs and other fields. However, it is necessary to make full use of the converted wave seismic exploration data to extract the lithology and physical properties parameters of oil and gas reservoirs such as the time difference ratio of compression and shear waves, amplitude ratio, velocity ratio of compression and shear waves, Poisson's ratio, bulk modulus, shear modulus, Lamé coefficient, etc. To achieve the exploration goals of reservoir prediction, fracture detection and fluid identification, ...
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IPC IPC(8): G01V1/28G01V1/36
CPCG01V1/28G01V1/36
Inventor 李向阳宋建军蔡志光撒振宇
Owner BC P INC CHINA NAT PETROLEUM CORP