Multi-point geostatistic stochastic inversion method based on image stitching and device

A geostatistical and stochastic inversion technology, applied in the fields of stochastic inversion, reservoir characterization and modeling, can solve the problems of low computational efficiency of simulation algorithms, poor continuity of simulation results, and limited scope of application, so as to improve computational efficiency and Practicality, reduced search space, high resolution effect

Active Publication Date: 2019-07-19
XIAN UNIV OF SCI & TECH
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Problems solved by technology

[0004] In conclusion, the current multi-point geostatistical stochastic inversion method and research have the following problems and deficiencies: 1. The existing multi-point geostatistical stochastic simulation algorithm has poor continuity of simulation results, and the continuity needs to be further improved; and the existing simulation algorithm It is not suitable f

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  • Multi-point geostatistic stochastic inversion method based on image stitching and device

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[0066] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following describes the embodiments of the present invention in further detail with reference to the accompanying drawings. Here, the exemplary embodiments of the present invention and the description thereof are used to explain the present invention, but not as a limitation to the present invention.

[0067] The present invention proposes a multi-point geostatistical random inversion method based on image stitching. The synthetic seismic record of the simulation result is compared with the actual seismic record through the forward modeling method, and a simulation result that can be compared with the actual seismic record is obtained first , Then, through the quantum annealing optimization algorithm, the simulation results are quickly optimized, and the final random inversion results are obtained under the constraints of seismic records, which impro...

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Abstract

The invention discloses a multi-point geostatistic stochastic inversion method based on image stitching and a device. Stochastic simulation is conducted through multi-point geostatistics, and thus theform of a target body can be better depicted; an image stitching technology is introduced, and thus multi-point geostatistic stochastic simulation results with good continuity can be obtained quicklyand efficiently; through a forward modeling method, the simulation results are synthesized into a seismic record to be compared with an actual seismic record, and a simulation result capable of beingcompared and matched with the actual seismic record is obtained firstly; then through a quantum annealing optimization algorithm, the simulation result is quickly optimized, the final stochastic inversion result is obtained under constraints of the seismic record, the precision of the inversion result of a cross-hole region is improved, the resolution ratio of the inversion result of the cross-hole region is increased, stochastic inversion is conducted for multiple times, thus the multiple different geostatistic stochastic inversion results can be obtained, the reliable basis is provided foruncertainty analysis, and then necessary reference information is provided for study of reservoir characterization, reservoir description and the like.

Description

technical field [0001] The invention relates to the technical field of stochastic inversion, reservoir characterization and modeling, in particular to a multi-point geostatistical random inversion method and device based on image stitching. Background technique [0002] Seismic inversion technology can play an important role in reservoir characterization and modeling. Generally, seismic inversion can be divided into deterministic inversion and stochastic inversion. In the actual data collected, the seismic data has good lateral continuity, but due to the band-limited nature of the seismic data, the improvement of resolution is limited; although the logging data has high resolution, it can only show the position of the borehole The features and parameters vary, and the lateral resolution is relatively low. Therefore, a key focus of seismic inversion is to make full use of the useful information in seismic and logging data to improve lateral and vertical resolution and refle...

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Application Information

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IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/28G01V1/306G01V2210/512G01V2210/514G01V2210/6169G01V2210/6242G01V2210/74
Inventor 刘兴业
Owner XIAN UNIV OF SCI & TECH
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