Method and device for constructing two-dimensional cross section of geologic reservoir

Abstract

The invention provides a method and a device for constructing a two-dimensional cross section of a geologic reservoir, wherein the method comprises the steps of acquiring horizon interpreting data of a working area; performing preprocessing on the horizon; performing crossed processing on the horizon, the fracture and the working area boundary, thereby dividing the working area into a plurality of closed blocks; then performing automatic tracking the closed blocks for determining the definite position of each closed block; and performing final color filling for generating the cross section of the geologic reservoir. Through the manner of the invention, the method and the device settle a problem of incapability of simultaneously obtaining high precision and high efficiency in establishing the cross section of the geologic reservoir, and realize a technical effect of obtaining high precision and high efficiency in establishing the cross section of the geologic reservoir.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to a method and device for constructing a two-dimensional geological reservoir profile. Background technique [0002] Geological profiles and reservoir profiles are one of the essential maps for analysis in oilfield exploration and development. Geological profiles can effectively reflect the vertical variation of geological structures, and reservoir profiles can reflect the vertical profile of oil reservoirs. The changing undulating shape. On the basis of the section chart, plus sand body and oil and gas shows, the distribution characteristics of sand layers, oil layers, interlayers, oil-water relationship, and physical properties can be understood on the geological section. [0003] Currently, there are mainly two methods for drawing geological or reservoir profiles: [0004] The first method is to directly use well data to establish geological profiles or reservoi...

AI Technical Summary

Problems solved by technology

At present, there are mainly the following implementation methods for establishing geological profiles or reservoir profiles using the idea of ​​combining wells and seismic data: 1) 3D geological modeling, that is, establishing a 3D geological model through modeling software, and then forming a geological profile based on this. The advantage is that the geological model has a topological structure, so the formed geological section can automatically form a closed block according to the contact relationship of horizon faults, and fill in the color and lithology. The problem with this method is: if only one geological section or A reservoir section also needs to establish a complex 3D geological model, and the algorithm for establishing the 3D geological model has high requirements for interpretation data. When there are many faults and the intersecting relationship is very complicated, modeling will be very difficult, resulting in this The process is very cumbersome; 2) Based on the method of clearing the seismic interpretation profile, import the seismic profile with the interpretation scheme into the drawing software, re-trace the faults and horizons, and manually draw the boundaries of each fault block, thus forming Closed polygons are then filled with color and lithology to form a geological section or reservoir section. When the structure is complex and there are many fault horizons, it takes a lot of manual time to draw a reservoir section

[0006] At present, there is another commonly used way to establish geological profiles or reservoir profiles, which is the 2D modeling method, which can use the interpreted horizon fault data to build block models, but these modeling algorithms require high-quality horizons Interpret the data. When the quality of the interpreted data is not high, a lot of manual interaction is required, which seriously affects the efficiency

[0007] For the problem of ensuring the accuracy and efficiency of reservoir profile establishment at the same time, no effective solution has been proposed so far

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