Braided River Training Image Generation Method

Abstract

The invention relates to a method for generating a training image of a braided river. The method comprises the steps of (1) establishing a geological knowledge base and obtaining a quantitative geological model; (2) establishing a sand thickness map; (3) using the sand thickness map as a basis to obtain a quantitative geological model As constraints, generate braided river training images. The method of the invention solves the problem of automatic acquisition of training images of overlaid braided rivers. It is based on existing experience and knowledge, combined with statistical parameter constraints of the research area, so that the training images are more consistent with the actual work area.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to a method for generating braided river training images. Background technique [0002] Reservoir modeling is the reproduction of geological patterns of subsurface reservoirs. Considering the reservoir modeling process, it is essentially a process of reconstructing the characteristic depositional model of the underground reservoir. If various geological models are regarded as the constituent units of an image, reservoir prediction is also the process of image reconstruction. Based on this idea, at the meeting held by the Stanford Reservoir Prediction Center in 2003, Arpat proposed the Simpat (Simulation with pattern) multi-point geostatistical random geological model, that is, by identifying different geological models and using the similarity judgment method, when modeling reproduce these geological patterns. Since the geological model is processe...

AI Technical Summary

Problems solved by technology

Two-dimensional training images are easy to obtain through geological analysis, but three-dimensional training images are more complicated, and its development has experienced manual drawing, computer-based random simulation, flume experiments, outcrop anatomy, etc.

[0003] Braided river is one of the sedimentary types of rivers. Due to the double influence of spin cycle and heterocycle, the deposited sandstone has the characteristics of horizontal quasi-continuous slices, vertical multi-thin layers, and large differences in flowability. Traditional methods cannot accurately obtain its training image acquisition method, therefore, there is an urgent need to obtain a method that can effectively obtain braided river training images

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