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Perforating string system reliability analysis method and system and electronic equipment

A column system and reliability technology, applied in earthwork drilling, design optimization/simulation, electrical digital data processing, etc., can solve problems such as the reliability of difficult perforation string systems

Active Publication Date: 2021-09-10
YANGTZE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the particularity of downhole perforating conditions, there is currently no particularly effective way to obtain data on the safety failure of downhole perforating tools. Traditional reliability assessment methods rely on a large number of system failure data, which is difficult to evaluate the perforation string system. reliability

Method used

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  • Perforating string system reliability analysis method and system and electronic equipment
  • Perforating string system reliability analysis method and system and electronic equipment
  • Perforating string system reliability analysis method and system and electronic equipment

Examples

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Embodiment 1

[0062] Embodiment 1 provided by the present invention is an embodiment of a method for reliability analysis of a perforating string system provided by the present invention, combining figure 2 As can be seen, this embodiment includes:

[0063] Step 1. Establish the reliability theoretical model of the perforation string system in the normal stage and damage defect stage based on the competing failure modes.

[0064] The competing failure mode is that at least two failure conditions compete to make the perforation string system fail, and the failure conditions include: the damage increment reaches the threshold and the duration of the damage state reaches the threshold.

[0065] In a possible embodiment, step 1 includes:

[0066] Step 101, using the concept of delay time to describe the failure process of the perforation string system, and establishing a mathematical calculation model for the life of the perforation string system considering all failure conditions.

[0067] ...

Embodiment 2

[0100] Embodiment 2 provided by the present invention is an embodiment of a system for reliability analysis of a perforating string system provided by the present invention, Figure 5 A system structure diagram for the reliability analysis of the perforating string system provided by the embodiment of the present invention, combined with Figure 5 It can be seen that the embodiment of the system includes: a reliability theory model building module, a dynamic impact numerical simulation module and a reliability evaluation module.

[0101] The reliability theory model establishment module is used to establish the reliability theory model of the normal stage and damage defect stage of the perforation string system based on the competing failure modes.

[0102] The competing failure mode is that at least two failure conditions compete to make the perforation string system fail, and the failure conditions include: the damage increment reaches the threshold and the duration of the d...

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Abstract

The invention relates to a perforating string system reliability analysis method and system and electronic equipment. The method comprises the following steps: establishing reliability theoretical models of a normal stage and a damage defect stage of a perforating string system based on a competitive failure mode, wherein the competitive failure mode is that at least two failure conditions compete to cause the perforation string system to fail, and the failure conditions comprise that the damage increment reaches a threshold value and the duration of the damage state reaches a threshold value; adopting a numerical simulation method to simulate the impact dynamic process of the perforation string system, obtaining a numerical simulation calculation result through analysis, and extracting dynamic impact data of the perforation string system according to the numerical simulation calculation result; and performing reliability evaluation on the perforation string system according to the dynamic impact data and the reliability theoretical models. The impact dynamic data of the perforation string system can be effectively extracted, the reliability analysis model of the perforation string system can be established, and the reliability of the string system under the action of a perforation random impact load can be accurately evaluated.

Description

technical field [0001] The invention relates to the field of petroleum and natural gas in the energy industry, in particular to a method, system and electronic equipment for reliability analysis of a perforation string system. Background technique [0002] In actual perforating conditions, various downhole instruments and equipment, tool parts and many other components with the pipe string as the core constitute a complete complex system, which can be called the perforation pipe string system. The performance of the perforation string system will degrade over time during operation, and its performance will also be affected by external conditions. Among them, perforation explosion impact is one of the typical mines, and the performance of the perforation string system is directly related to the success or failure of the on-site perforation operation. Therefore, it is necessary to carry out reliability modeling and analysis for the downhole string system under impact, which h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23E21B43/11G06F119/02
CPCG06F30/23E21B43/11E21B2200/20G06F2119/02
Inventor 邓桥
Owner YANGTZE UNIVERSITY
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