Underwater Christmas tree sea trial operation risk evaluation method

A subsea tree and risk assessment technology, applied in the field of risk assessment, can solve problems such as lack of experience in sea trial operations, lack of risk evaluation system for underwater Christmas tree sea trial operations, etc., and achieve strong objectivity and scientific results

Pending Publication Date: 2022-07-29
CNOOC TIANJIN BRANCH +1
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Problems solved by technology

However, due to the relatively little use of subsea trees in my country and the lack of experience in sea trial operations, the

Method used

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  • Underwater Christmas tree sea trial operation risk evaluation method
  • Underwater Christmas tree sea trial operation risk evaluation method
  • Underwater Christmas tree sea trial operation risk evaluation method

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Embodiment Construction

[0029] Hereinafter, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially combined in other embodiments without further recitation.

[0030] refer to figure 1 , the present invention is now combined with an underwater Christmas tree sea trial operation in the oil field, and the risk assessment method of the underwater Christmas tree sea trial operation of the present invention is described in further detail.

[0031] S1. Determine the basic events of risk accidents according to the sea trial operation procedure of the underwater Christmas tree, and construct a fault tree for the sea trial operation of the underwater Christmas tree, specifically:

[0032] According to the underwater Christmas tree sea trial operation procedure, the basic events of risk accidents are determined during the installation, testing, and recovery process of the ...

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Abstract

The invention provides an underwater Christmas tree sea test operation risk evaluation method, which comprises the steps of S1, determining a basic event of a risk accident according to an underwater Christmas tree sea test operation program, and constructing a fault tree of underwater Christmas tree sea test operation; s2, evaluating the fault tree by adopting an expert scoring method, and performing fuzzification processing on an evaluation result to obtain a probability fuzzy number of the basic event; s3, calculating a fuzzy number according to the probability fuzzy number of the basic event, and calculating a failure probability of a top event of the fault tree according to the fuzzy number; and S4, carrying out sensitivity analysis on each basic event to obtain a critical importance coefficient and a probability importance coefficient of the basic event. According to the underwater Christmas tree sea test operation risk evaluation method, the evaluation result is closer to reality, more sufficient risk factor related data can be obtained, the method can be applied to underwater Christmas tree sea test operation risk evaluation, and the disadvantages of underwater Christmas tree sea test operation experience complementation in China can be complemented.

Description

technical field [0001] The invention relates to the technical field of risk assessment, in particular to a risk assessment method for sea trial operation of an underwater Christmas tree. Background technique [0002] With the development of my country's offshore oil and gas exploration from shallow seas to deep seas, the demand for underwater Christmas trees has increased. In order to break through technology and reduce costs, breakthroughs have been made in the research and development of domestically produced underwater Christmas trees. However, due to the relatively small use of underwater Christmas trees in my country, the lack of experience in sea trial operation, and the lack of a more feasible risk assessment system for localized underwater Christmas tree sea trial operation, further improvement is needed. SUMMARY OF THE INVENTION [0003] In order to solve the above problems, the present invention provides a risk evaluation method for underwater Christmas tree sea ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02G06F16/2458G06N7/02
CPCG06Q10/0635G06Q50/02G06F16/2465G06N7/02
Inventor 刘书杰黄熠孟文波黄亮李磊高永海付光明余意张健张崇徐斐董钊任冠龙邓华根肖谭
Owner CNOOC TIANJIN BRANCH
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