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Stratum correlation method and device based on uncertainty

一种地层对比、确定度的技术，应用在测量装置、地震学、地理建模等方向，能够解决分层结果可靠性下降、难以闭合、影响地质工作等问题，达到分层结果准确可靠、减少工作量、方便质量控制的效果

Active Publication Date: 2018-04-06
PETROCHINA CO LTD
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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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  • Stratum correlation method and device based on uncertainty
  • Stratum correlation method and device based on uncertainty
  • Stratum correlation method and device based on uncertainty

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] The embodiment of the present invention provides a stratum correlation method based on uncertainty, such as figure 1 As shown, the stratigraphic correlation method includes:

[0044] S101: During the formation correlation process, determine multiple possible correlation positions on wells with uncertain layer positions in the profile;

[0045] S102: Assign qualitative or quantitative certainty values ​​to the plurality of comparison positions.

[0046...

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Abstract

The present invention provides a stratum correlation method and device based on uncertainty. The stratum correlation method includes: during the stratum correlation process, determining a plurality of possible contrast positions on wells with uncertain delamination positions in the profile; A qualitative or quantitative certainty value is assigned to each of the comparison positions; multiple comparison positions and their certainty values ​​are respectively stored as different layering schemes and displayed on the profile. The present invention can record all possibilities of stratification positions judged by geologists by setting multiple position schemes for a certain formation, and provide reference for subsequent comparison of other sections, closure of the overall stratification scheme, 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00
CPCG01V11/00G01V2200/14G01V2210/667G01V2210/66G01V20/00G01V99/00
Inventor 高严田昌炳朱怡翔李保柱张为民罗洪刘双双刘卓钱其豪宋本彪李勇魏晨吉
Owner PETROCHINA CO LTD
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