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深水钻井隔水管下放试压单元智能优化
刘康1,陈国明1,畅元江1,柳磊1,温纪宏2,胡东旭1
(1.中国石油大学(华东)海洋油气装备与安全技术研究中心,山东青岛 266580;2.中海油田服务股份有限公司钻井事业部, 河北三河 065201)
摘要:
深水钻井隔水管下放过程中须对周边辅助管线进行试压以保证系统的密封性能。为保证隔水管下放试压的安全高效性,基于深水钻井隔水管下放试压工艺建立深水钻井隔水管下放试压时效评估模型与风险计算模型,采用蜂群算法形成深水钻井隔水管下放试压智能优化方法。结果表明:隔水管下放试压智能优化方法具有较好的全局搜索能力和探索能力;依据优化结果开展试压作业有望节约可观的钻井成本;隔水管下放试压安全效益曲线随可靠度的增加呈现先减小后增大趋势;单根密封可靠性是确定试压单元单根数目的关键因素,作业水深对试压次数与安全效益的影响较大,但对试压单元单根数目的影响较小。
关键词:  钻井隔水管  压力测试  风险决策  熵理论  人工蜂群
DOI:10.3969/j.issn.1673-5005.2019.06.015
分类号::TE 951
文献标识码:A
基金项目:国家科技重大专项课题子课题(2016ZX05028-001-05);中央高校基本科研业务费专项 (18CX02157A);山东省重点研发计划项目(2019GGX103041)
Intelligent optimization on pressure test for deepwater drilling risers in running
LIU Kang1, CHEN Guoming1, CHANG Yuanjiang1, LIU Lei1, WEN Jihong2, HU Dongxu1
(1.Centre for Offshore Engineering and Safety Technology in China University of Petroleum (East China), Qingdao 266580, China;2.COSL Drilling Division, Sanhe 065201, China)
Abstract:
In the running process of deepwater drilling risers, the auxiliary lines need experience the pressure test to ensure the sealing property of the riser system. In order to ensure the safety and high efficiency of the riser system in running, the timelines evaluation model and the risk calculation model were established respectively, according to the pressure test operating procedures. And an intelligent optimization method was proposed for the riser running pressure test based on the artificial bee colony. The results show that the proposed method has a good performance in the global search and exploration. The pressure test operation carried out based on the optimization results can save considerable drilling costs. With the increase of the reliability, the safety benefit of the riser pressure test declines firstly and then increases. The single seal reliability is a key parameter to determine the number of risers in a pressure test unit. The water depth has a great influence on the pressure test times and safety benefit, but it has little effect on the riser number in a pressure test unit.
Key words:  drilling riser  pressure test  risk decision  entropy theory  artificial bee colony
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