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Jumper pipe risk assessment method based on innovative risk matrix theory

A risk matrix and cross-takeover technology, applied in the field of cross-takeover risk assessment, can solve problems such as the risk of not being able to catch the net, and achieve the effect of ensuring safe production

Pending Publication Date: 2022-07-08
OFFSHORE OIL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fishing net dragging is unavoidable, but the staff cannot predict the degree of damage to the jumper due to the risk of fishing net dragging

Method used

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  • Jumper pipe risk assessment method based on innovative risk matrix theory
  • Jumper pipe risk assessment method based on innovative risk matrix theory
  • Jumper pipe risk assessment method based on innovative risk matrix theory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] In an embodiment, the present invention discloses an assessment method for takeover risk based on the innovation risk matrix theory, comprising the following steps:

[0032] S1. Collect the data of the jumper and determine the design parameters of the jumper structure, as shown in Table 1

[0033] Table 1 Structural dimension parameters of jumper

[0034] parameter name 6 inch span tube Outer diameter (mm) 168.3 Wall thickness (mm) 12.7 Elbow radius (mm) 841.5 Yield stress (MPa) 450 Inner lining thickness (mm) 3 Coating Thickness(mm) 0.35 Design pressure (MPa) 27 Maximum design temperature (℃) 103 Minimum design temperature (℃) -20 Minimum yield stress (MPa) 450 Minimum tensile strength (MPa) 535

[0035] S2. Perform finite element analysis on the spanning tube, and calculate the ultimate bearing capacity of the spanning tube;

[0036] S3. Determine the external load that the jumper can be...

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PUM

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Abstract

The invention discloses a jumper pipe risk assessment method based on an innovative risk matrix theory, and the method comprises the steps: obtaining an external impact load which can be borne by a jumper pipe through the research and calculation of the limit load of the jumper pipe and the characteristics of a fishing boat trawl, obtaining the grade of the damage degree of the jumper pipe, and dividing the operation frequency into grades, a risk grade evaluation standard is obtained according to a risk evaluation matrix theory, and then the risk grade of the jumper pipe, the potential hazard degree of the in-service jumper pipe and whether a suggestion is provided for an operator to take certain protection and strengthening measures are specifically judged through the trawl impact force and the operation frequency after accounting, so that the safety production of an oil and gas field is guaranteed.

Description

technical field [0001] The invention relates to an evaluation method of takeover risk based on the innovation risk matrix theory. Background technique [0002] The underwater development mode of "wellhead Christmas tree + jumper + manifold + jumper + submarine pipeline" is often used in the development of marine engineering with a water depth greater than 200 meters. The adjustment effect of thermal expansion / contraction caused by the internal medium during the development of oil and gas resources at the wellhead, and the end is connected to the subsea structure (Christmas tree, manifold, pipeline terminal, etc.) The complex ecosystem and abundant fishery resources in the South China Sea determine the variety of fishing operations. Trawling, gillnets, purse seines and fishing tackles are the main types of fishing gear in the northern South China Sea. Trawling is the most widely used and the largest number of marine fishing. With the increase and improvement of the mechanica...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06Q10/06G06Q50/02G06F119/14
CPCG06F30/23G06Q10/0635G06Q50/02G06F2119/14
Inventor 赵党李庆何杨李旭刘伟朱飞越高岳松王国强赵娜崔少敏邢广阔马坤明孙祥杰姚远张世宽
Owner OFFSHORE OIL ENG