Structure modeling method by means of horizontal well three-dimensional visualization stratigraphic correlation

Abstract

The invention discloses a structure modeling method by means of a horizontal well three-dimensional visualization stratigraphic correlation. The method comprises the steps that data are imported to three-dimensional visualization software, a regional stratigraphic vertical and horizontal distribution mode, a small layer vertical well section measurement recognition mode, a small layer inclined well section measurement recognition mode and a small layer horizontal well section recognition mode are built, a well trajectory plane distribution diagram is worked out and obtained, then well trajectory arrangement characteristics are analyzed, a stratigraphic section can be obtained through cutting along the well trajectory by means of the three-dimensional visualization software, horizontal well layer-penetrating point upper-lower layer interface elevation prediction is carried out, a layer model is built by means of an elevation set composed of layered points and prediction points on all small layers, an elevation data set of fine structure models of all the small layers is built, the data set is input to the three-dimensional visualization software, and a structure model is built. By means of the method, more oil and gas reservoir structure modeling small-layer interface data mainly for highly-deviated wells and horizontal wells can be obtained, and the accurate, reliable and fine structure model is built.

Description

technical field [0001] The invention belongs to the technical field of oil and gas development, and in particular relates to a structural modeling method relying on three-dimensional visual formation comparison of horizontal wells. Background technique [0002] Structural modeling is one of the main tasks that need to be carried out first in the process of oil and gas development. With the structural model, the target oil and gas reservoirs for oil and gas development will have a clear airspace limited by layers and faults. It is in this airspace that the To achieve the characterization and display of various attributes and characteristics of oil and gas reservoirs, the various tasks of oil and gas development can be carried out scientifically and rationally. It can be seen that structural modeling is the prerequisite for the normal implementation of oil and gas development. The traditional structural modeling is based on the structural interpretation results of seismic dat...

AI Technical Summary

Problems solved by technology

For vertical wells or general deviated wells, accurate layer elevation data can be obtained by relying on multi-well comparison and well deviation correction; but for highly deviated wells or even horizontal On the one hand, since the highly deviated section of a highly deviated well or the horizontal section of a horizontal well travels through the target layer, the interface of the target layer is not drilled within a relatively large distance, and the layer elevation data cannot be obtained from the well data, so the highly deviated Well or horizontal well data are often not used or only used as reference in existing structural modeling technology solutions

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