渤海油田油气井侧钻设计方法优化分析
投稿时间:2019-10-10  修订日期:2020-01-07  点此下载全文
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作者单位E-mail
王占领 中海油能源发展股份有限公司工程技术分公司 wangzhl8@cnooc.com.cn 
陈立强 中海油能源发展股份有限公司工程技术分公司 chenlq20@cnooc.com.cn 
吴占民 中海油能源发展股份有限公司工程技术分公司  
于忠涛 中海油能源发展股份有限公司工程技术分公司  
王赞 中海油能源发展股份有限公司工程技术分公司  
贺占国 中海油能源发展股份有限公司工程技术分公司  
中文摘要:渤海油田低效井侧钻是稳产增产的重要手段之一。优化侧钻方案实现降本增效是精细化侧钻的研究重点。本文系统介绍了侧钻井设计方法,基于对低效井与侧钻井位进行合理匹配,优选侧钻井段,确定深部侧钻和浅部侧钻方案,针对浅部侧钻方案提出了隔水导管重入方案、隔水导管鞋下裸眼侧钻方案、表层套管段开窗侧钻方案、表层套管鞋下裸眼侧钻方案的适用条件与难点,针对深部侧钻方案提出了生产套管开窗侧钻方案、生产套管鞋下裸眼侧钻方案的优选流程。并以渤海某油田2口低效井A井与B井为例,进行了槽口优选、侧钻井段优选、侧钻点优选,最终通过互换2口井的侧钻井位,节约进尺1428m。现场实施结果表明本次2口低效井侧钻方案合理,能够实现降本增效的目的。本文提出的低效井侧钻优选方法对渤海油田低效井侧钻设计具有一定的指导意义。
中文关键词:渤海油田  油气井  低效井  侧钻  井位
 
Optimization design method for sidetracking wells in Bohai Oilfield
Abstract:Sidetracking of inefficient wells in Bohai Oilfield is one of the important means to stabilize production and increase production. Optimizing the sidetracking scheme to achieve cost reduction and efficiency enhancement is the research focus of refined sidetracking well design. This paper systematically introduces the sidetracking well design method, based on the reasonable matching of the low-efficient well and the sidetracking well location, preferably the sidetracking section, to determine the deep sidetracking and shallow sidetracking schemes, aiming at the shallow sidetracking scheme, the main means have reentry technology of riser, sidetracking under insulator shoes, surface casing windowing sidetracking, sidetracking under surface casing shoes, and the applicable conditions and difficulties are proposed. Aiming at the deep sidetracking scheme, the optimal flow of the casing sidetracking scheme and sidetracking under production casing shoes is proposed. Taking two low-efficiency wells of A and B in Bohai as an example, the preferred slot and the sidetracking section are preferred, and the sidetracking point is preferred. Finally, the sidetracking location of the two wells is interchanged, and the footage is saved at 1428m. The on-site implementation results show that the two low-efficiency well sidetracking schemes are reasonable and can achieve the purpose of cost reduction and efficiency enhancement. The optimal method of low-efficiency well sidetracking proposed in this paper has certain guiding significance for the sidetracking design of low-efficiency wells in Bohai Oilfield.
keywords:Bohai oilfield  Oil and gas wells  Inefficient wells  Sidetracking  Well location
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