Cementing quality evaluation method based on ontology

A quality evaluation and cementing technology, applied in the field of ontology-based cementing quality evaluation, can solve the problems of low cementing quality accuracy, inconsistency, wrong evaluation status, etc., and achieve the effect of easy update and modification

Inactive Publication Date: 2019-03-22
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the current cementing quality evaluation mainly relies on manual evaluation by field experts. Due to the different experience levels of experts, there may be inaccurate or even wrong evaluation situations. The purpose is to provide cementing quality evaluation based on the body method to solve the problem of low accuracy of manual evaluation of cementing quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The cementing quality evaluation method based on the body of the present invention comprises the following steps:

[0027] S1. Obtain the basic knowledge of cementing quality, and establish a domain knowledge base containing basic knowledge of cementing quality on the Protégé platform;

[0028] S2. Establishing a rule base for evaluating cementing quality based on the cementing quality evaluation standard;

[0029] S3. Combining domain knowledge base and rule base to construct well cementing quality evaluation ontology knowledge base;

[0030] S4. Build an analysis module, which obtains the cementing quality parameters to be evaluated, and obtains the evaluation result by obtaining the cementing quality evaluation knowledge from the cementing quality evaluation ontology knowledge base.

[0031] In step S2, JESS is used to construct a rule base for evaluating cementing quality based on the cementing quality evaluation standard.

[0032] In step S3, the domain knowledge...

Embodiment 2

[0039]Based on Example 1, the Methontology method is used in step S1 to establish a domain knowledge base containing basic knowledge of cementing quality. Since well cementing itself is an interdisciplinary project, it involves multiple disciplines such as acoustics, nuclear physics, mechanics and geology, and the diversity of geological conditions also determines that the prototype needs to be continuously tested during the creation process. Refining and iterative development, the present invention selects the Methontology method, the Methontology method is a very mature and general ontology creation method, its framework is to construct the ontology from the knowledge level first, and iterate the knowledge several times during the establishment This development method is suitable for the construction of cementing quality evaluation system.

Embodiment 3

[0041] Based on the foregoing embodiments, the ontology-based cementing quality assessment method also includes the following steps:

[0042] S5. The experts in the cementing field comprehensively evaluate the cementing quality in combination with the cementing quality evaluation results obtained in step S4 and the parameters of the cementing quality to be evaluated. The invention combines artificial expert evaluation with system evaluation, realizes the combination of artificial intelligence, and improves the accuracy of cementing quality evaluation results.

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Abstract

The invention discloses a cementing quality evaluation method based on an ontology, comprising the following steps: acquiring basic knowledge of cementing quality, and establishing a domain knowledgebase containing the basic knowledge of cementing quality on a Protege platform; Based on the cementing quality evaluation criteria, establishing a rule base for evaluating the cementing quality. The domain knowledge base and rule base are combined to construct the ontology knowledge base of cementing quality evaluation. Constructing The analysis modul, which obtains the cementing quality parameters to be evaluated, and obtaining the evaluation results through the cementing quality evaluation knowledge obtained from the ontology knowledge base of cementing quality evaluation. After the relevantparameters of the cementing are input, the invention evaluates the cementing quality, and does not need to be judged manually by combining the relevant data and charts of the cementing quality evaluation, thereby improving the accuracy of the cementing evaluation quality.

Description

technical field [0001] The invention relates to a cementing quality evaluation method, in particular to a body-based cementing quality evaluation method. Background technique [0002] Petroleum is a fluid mineral buried deep in the ground. At first, people called oily liquid minerals produced in nature petroleum, combustible gas natural gas, and solid combustible fuel minerals as asphalt. With the deepening of the research on these minerals, they realized that they are They are all hydrocarbon compounds in composition, and are related to each other in terms of origin, so they are collectively referred to as oil; oil extraction refers to the act of digging and extracting oil in places where oil is stored. [0003] In oil drilling, in order to strengthen the well wall, ensure continued safe drilling, isolate oil, gas and water layers, and ensure reasonable oil and gas production in the process of exploitation, high-quality steel pipes are lowered, and in the wellbore and steel...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06395G06Q50/02
Inventor杨淼李建钟新梅彭名华
OwnerSOUTHWEST PETROLEUM UNIV