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Evaluation method of oil casing quality level

A technology of quality level and evaluation method, which is applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problems that cannot comprehensively reflect the product quality level, and achieve the effect of reasonable and accurate evaluation

Active Publication Date: 2018-11-30
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these indicators can only reflect the average level or degree of dispersion of the batch of data alone, and cannot comprehensively reflect the product quality level, making it difficult to provide more direct and objective references for oilfield customers when purchasing oil casings

Method used

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  • Evaluation method of oil casing quality level
  • Evaluation method of oil casing quality level
  • Evaluation method of oil casing quality level

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example

[0064] The quality level evaluation was carried out for a batch of qualified 139.70×7.72mm P110 BC casings shipped from a certain factory. There were 24 batches of casings in this batch. 20 bushings were randomly selected for performance parameter testing, and the top 20 heat batches were selected for physical and chemical properties. The performance parameters are determined as follows:

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Abstract

The invention provides an oil casing quality level evaluation method. The method comprises the following steps of: randomly drawing n oil casings and detecting m performance parameters of each drawn oil casing; carrying out an ideal deviation value of each performance parameter; calculating a normalization score of the ideal deviation value of each performance parameter; calculating a quality level score of the n oil casings; and determining a quality level evaluation result of the n oil casings according to the quality level score of the n oil casings. The oil casing quality level evaluation method provided by the invention not only can be used for reflecting the degrees, to an ideal target value, of performance parameter detection data, but also can be used for reflecting statistic indexes of discrete degrees of the performance parameter detection data, so as to evaluate the oil casing quality level more objectively, reasonably and correctly, and provide reference for oil field customers during the purchase.

Description

technical field [0001] The invention relates to the technical field of evaluating the quality level of oil and casing pipes in the petroleum and natural gas industry, in particular to a method for evaluating the quality level of oil and casing pipes. Background technique [0002] Oil casing is an important material and equipment used in the exploitation of oil and gas fields, and its quality directly affects the production safety and production efficiency of oil and gas fields. At present, most of the tubing and casing used in major oil fields implement API-related standards, such as API 5CT and API 5B. There are also oil casings that use non-API specifications, such as European Mannesmann V·M, American Hunting Hunting, American Hydril, Argentina Tenaris and other companies have developed their own special oil casings, all of which implement their special oil casing standards. Regardless of API oil casing or non-API oil casing, the implemented standards have clear requireme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG16Z99/00
Inventor 闫凯赵新伟王长安杨专钊杨红兵李昱坤卫栋王冬林田新新
Owner BC P INC CHINA NAT PETROLEUM CORP
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