Risk assessment method for blowout out of control in deepwater drilling
A technology for deep-water drilling and risk assessment, applied in data processing applications, instruments, calculations, etc., can solve the problem that the risk of blowout out of control in deep-water drilling cannot be effectively evaluated, and achieve the effect of reliable control
Active Publication Date: 2021-10-08
CHINA NAT OFFSHORE OIL CORP +3
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Problems solved by technology
[0005] In order to solve the problem that the risk of blowout out of control in deepwater drilling cannot be effectively evaluated, the present invention provides a risk assessment method for blowout out of control in deepwater drilling
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Embodiment Construction
[0030] Now, with reference to an oil well in an oil field, the method for evaluating the risk of blowout out of control in deepwater drilling according to the present invention will be further described in detail.
[0031] refer to figure 1 , S1, select the influencing factors of deepwater drilling blowout out of control, and divide the corresponding influencing factors into layers, so as to build a deepwater drilling blowout out of control risk evaluation system, the specific operation is as follows:
[0032] S11. Based on the process from the cause of drilling blowout on the offshore platform to the out-of-control process, gas intrusion, control system failure, blowout preventer failure, platform condition, re-injector failure and channeling outside the pipe are taken as the first layer of influencing factors;
[0033] S12. Take shallow gas out of control, gas intrusion into the wellbore and gas intrusion riser as the second layer of influence factors for gas intrusion; use ...
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The invention discloses a method for evaluating the risk of blowout out of control in deepwater drilling, comprising the steps of: S1, selecting the influencing factors of blowout out of control in deepwater drilling, and dividing the corresponding influencing factors into layers to construct a risk assessment system for blowout out of control in deepwater drilling; S2, calculating and constructing The weight of each influencing factor in the deepwater drilling blowout out-of-control risk evaluation system; S3, formulate the evaluation index of each influencing factor, and construct the risk evaluation standard of the influencing factor; S4, according to the risk evaluation standard of each influencing factor Based on the evaluation results and the weight of each influencing factor, the quantitative results of the risk of blowout in deepwater drilling out of control are calculated. Through the selection of influencing factors, the establishment of an evaluation system, the calculation of weights, and the setting of indicators and evaluation standards, this method can effectively evaluate the risk of blowout out of control in deepwater drilling, and can obtain objective and effective evaluation results. Control and emergency rescue measures provide reliable protection.
Description
technical field [0001] The invention belongs to the technical field of deepwater drilling, and in particular relates to a method for evaluating the risk of blowout out of control in deepwater drilling. Background technique [0002] Deepwater drilling is the main direction of oil and gas development at present. Various complex situations will be encountered in deepwater drilling operations, which pose a greater risk to deepwater drilling. [0003] In the process of deepwater drilling, the out-of-control blowout is a major risk issue in deepwater drilling. If the blowout is out of control, it will cause platform damage, oil and gas leakage, etc., which will cause significant personnel and property losses. Therefore, it is necessary to Evaluate the risk of blowout out of control during deepwater drilling operations, so as to take corresponding countermeasures. [0004] At present, there is no effective evaluation method for evaluating the risk of blowout out of control in deep...
Claims
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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0635G06Q50/02
Inventor 金业权董星亮李中郭永宾李龙徐超黄熠管申田宗强何连张红生林四元徐一龙陈浩东杨玉豪吴江
Owner CHINA NAT OFFSHORE OIL CORP