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首页> 外文学位 >Implementation of improved underbalanced drilling in AbuDhabi onshore field.
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Implementation of improved underbalanced drilling in AbuDhabi onshore field.

机译：在阿布扎比陆上油田实施改进的欠平衡钻井。

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摘要

Abu Dhabi Company for Onshore Oil Operations (ADCO) is considering Underbalanced Drilling (UBD) as a means to develop lower permeability units in its fields. In addition to productivity and recovery gains, ADCO also expects reservoir characterization benefits from UBD. Reservoir screening studies were carried out on all of ADCO's reservoirs to determine their applicability for UBD. The primary business benefits of UBD were determined to be reservoir characterization, damage Mitigation, and rate of Penetration "ROP" Improvement. Apart from the primary benefits, some of the secondary benefits of UBD that were identified beforehand included rig performance. Since it's a trial wells, the challenge was to drill these wells safely, efficiently and of course meeting well objectives.;Many operators worldwide drill these well in underbalanced mode but complete it overbalanced. In our case the plan was to drill and complete these wells in underbalanced condition. But we had to challenge most operators and come up with special and unique casing hanger design to ensure well control barriers exists while fishing the control line of the Downhole Deployment Valve "DDV". After intensive studies and planning, the hanger was designed as per our recommendations and found to be effective equipment that optimized the operational time and the cost as well.;This report will provide better understanding of UBD technique in general and shade on the special designed casing hanger compared to conventional or what's most used worldwide. Even thought there were some issues while running the casing hanger prior drilling but managed to capture the learning's from each well and re-modified the hanger and come up with better deign for the future wells. Finally, the new design perform a good performance of saving the operation time and assisting the project to be done in a safe and an easy way without a major impact on the well cost. This design helped to drill and complete these wells safely with requirement to kill the wells and this ensured least reservoir damage.
机译：阿布扎比陆上石油运营公司（ADCO）正在考虑将欠平衡钻井（UBD）作为在其油田开发低渗透率单元的一种手段。除了提高生产率和提高采收率外，ADCO还期望从UBD获得储层表征优势。对ADCO的所有储层进行了储层筛选研究，以确定它们是否适用于UBD。确定UBD的主要业务收益是油层表征，减损和渗透率“ ROP”提高。除了主要收益外，UBD的一些次要收益还包括钻机性能。由于这是一口试井，因此面临的挑战是安全，高效地钻探这些井，当然也要达到井目标。世界各地的许多运营商都在欠平衡模式下对这些井进行钻探，但要使其达到超平衡状态。在我们的情况下，计划是在欠平衡条件下钻完这些井。但是，我们必须挑战大多数操作员，并提出特殊而独特的套管悬挂器设计，以确保在捕捞井下展开阀“ DDV”的控制线时存在良好的控制障碍。经过深入的研究和计划，吊架已根据我们的建议进行了设计，并被发现是可有效优化操作时间和成本的有效设备;该报告将更好地了解UBD技术的总体情况以及特殊设计的机壳的阴影与传统或全球最常用的衣架相比。甚至认为在钻井之前运行套管悬挂器时会遇到一些问题，但设法从每个井中获取了教训，并重新修改了悬挂器，并为以后的井设计出了更好的方案。最后，新设计具有良好的性能，可以节省操作时间并以安全，简便的方式帮助完成项目，而不会对油井成本产生重大影响。这种设计有助于安全地钻探和完井这些井，并要求将其杀死，从而确保对储层的损害最小。

著录项

  • 作者

    Alhammadi, Adel Mohammed.;

  • 作者单位

    The Petroleum Institute (United Arab Emirates).;

  • 授予单位 The Petroleum Institute (United Arab Emirates).;
  • 学科 Engineering Petroleum.;Energy.
  • 学位 M.Eng.
  • 年度 2011
  • 页码 118 p.
  • 总页数 118
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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