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| 海上丛式井组钻井顺序优化模型及求解方法 |
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曹向峰1,2,管志川1,史玉才1,薛磊1,张欣3
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(1.中国石油大学石油工程学院,山东青岛 266580;2.中石化胜利石油工程有限公司钻井工艺研究院,山东东营 257017;3.中海油安全技术服务有限公司,天津 300452)
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| 摘要: |
| 海上丛式井组待钻井较多且井口间距较小,优化钻井顺序有助于防碰和采用批钻井方式。综合考虑防碰要求并兼顾批钻井要求,以井眼分离系数作为井眼交碰风险评价指标,以整个井组的防碰井段总长度最小作为钻井顺序优化目标,建立海上丛式井组钻井顺序优化模型及遗传算法求解方法,给出实例计算分析。结果表明:以整个井组的防碰井段总长度最小作为海上丛式井组钻井顺序优化指标是可行的;建立的钻井顺序优化方法能够满足海上丛式井防碰及批钻井要求。 |
| 关键词: 海上丛式井 钻井顺序 优化模型 防碰 批钻井 遗传算法 |
| DOI：10.3969/j.issn.1673-5005.2016.03.012 |
| 分类号::TE 21 |
| 基金项目:国家“863”计划(2012AA091501);中石化集团公司项目(13JP10006) |
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| Drilling sequence optimization model and its solution method for offshore cluster wells |
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CAO Xiangfeng1,2, GUAN Zhichuan1, SHI Yucai1, XUE Lei1, ZHANG Xin3
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(1.School of Petroleum Engineering in China University of Petroleum, Qingdao 266580, China;2.Drilling Technology Research Institute, Shengli Petroleum Engineering Company Limited, Dongying 257017, China;3.CNOOC Safety Technology Service Company Limited, Tianjin 300452, China)
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| Abstract: |
| Due to more wells and small wellhead space of offshore cluster wells, optimizing drilling consequence is helpful for anti-collision and batch drilling. Considering the anti-collision and the requirements of batch drilling, the wellbore separation factor was selected as the evaluation index of the wellbore collision risk assessment, and the minimum total length of anti-collision intervals of the whole cluster was selected as the optimal index of drilling consequence optimization to establish a mathematical drilling consequence optimization model and a genetic algorithm for offshore cluster wells. Also a living example was solved and discussed. The results show that it is feasible to select the minimum total length of anti-collision intervals as the optimal index to establish the drilling consequence optimization model. The drilling consequence optimization method can satisfy the requirements of anti-collision and batch drilling for offshore cluster wells. |
| Key words: offshore cluster wells drilling sequence optimization model anti-collision batch drilling genetic algorithm |
