Stratigraphic correlation method and device based on uncertainty

Abstract

The invention provides a stratigraphic correlation method and a stratigraphic correlation device based on uncertainty. The stratigraphic correlation method comprises the steps: in the stratigraphic correlation process, a plurality of possible comparison positions are determined on a well where layered positions are uncertain in a profile; the comparison positions are endowed with qualitative or quantitative certainty grade values; and the comparison positions and the certainty grade values thereof are respectively used as different layered schemes and are respectively stored and displayed on the profile. According to the stratigraphic correlation method and the stratigraphic correlation device based on uncertainty, a plurality of position schemes are arranged for a certain stratum, all possibilities of the layered positions which are judged by geological personnel can be recorded, and references are provided for subsequent other profile comparison, whole layering scheme closure and quality control.

Description

technical field [0001] The invention relates to a technique for stratum correlation through uncertainty, in particular to a stratum correlation method and device based on uncertainty. Background technique [0002] In the process of stratigraphic correlation using well logging curves, it is usually encountered that the layered position of a certain stratum in a certain well is uncertain, or the position of a certain stratum in different sections passing through the same well is inconsistent. In view of the above problems, in the prior art, a delamination position is mostly determined empirically, and then confirmed in the subsequent comparison or closure inspection. When the stratum is complex, the number of stratified wells is large, and the multi-solution of the stratified position is strong, errors, omissions, repetitions, and even difficulty in closing are often prone to occur in the subsequent inspection process, resulting in a decrease in the reliability of the stratifi...

AI Technical Summary

Problems solved by technology

When the stratum is complex, the number of stratified wells is large, and the multi-solution of the stratified position is strong, errors, omissions, repetitions, and even difficulties in closing are often prone to occur in the subsequent inspection process, resulting in a decrease in the reliability of the stratified results. Affect subsequent geological work

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