Synergistic Technique Enables Top-Drive Cement Head and Casing Running Tool Adapter to Improve Zonal Isolation with Safety and Efficiency in Colombia

Fabian Castro, Juan Manuel Arroyave, Sergio Roldan, J. Vela, Nelson Eduardo Garcia
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引用次数: 1

Abstract

Casing rotation is a mechanical aid that improves fluids displacement efficiency and helps achieve zonal isolation. A Colombian oil company faced its biggest challenge to successfully place cement across zones with washouts, rate restrictions, and difficult mud removal. This paper describes the deployment of a rotating cement head for cementing services on a land operation in Colombia. The Casing Running Tool (CRT) Adapter provided an enhanced system to reduce stuck pipe risks and decrease rig up time. The main solution selected to enhance results was implementing casing rotation; nevertheless, execution had to be completed safely and efficiently. Top-drive cement heads are commonly used in offshore operations. In Colombia, the use of a top-drive cement head was targeted as a safe solution to rotate intermediate and production casings in land operations. This method would allow for rig up, pressure test, and execution of the cement job (including rotation throughout the entirety of the job) without having to break connections or shutdown operations. The main component of the system is the cement head itself, but it was necessary to also incorporate a triple water bushing that serves to connect the cement head with casing and cementing plugs for the specified casing size. The system was enhanced by incorporating an adapter that allows connecting the assembly directly to CRT. This configuration enabled us to complete cementing without any connection make-ups during job, which reduced personnel risk and saved any flat time. During the installation process in prior operations, it was necessary to disconnect and rack back the casing running tool and then connect the cement head to the top drive. In some cases, the overall time to perform these actions was about 1 hour and 30 minutes. On certain wells this additional time could increase the risk of stuck pipe and prevent our ability to rotate the casing during cementing. The system has been improved by adding a CRT adapter that joins the cement head to the top drive without disconnecting the CRT. This new system helps mitigate stuck pipe risks by reducing connection time to as little as 10 minutes while safely enabling casing rotation to improve cement isolation. This configuration enables casing rotation during cementing in wells with high torque requirements and stuck pipe risks while improving annular cement placement. The system makes the operation safer and more efficient.
协同技术使顶驱水泥头和套管下入工具适配器能够安全高效地改善哥伦比亚的层间隔离
套管旋转是一种机械辅助手段,可提高流体驱替效率,有助于实现层间隔离。哥伦比亚一家石油公司面临着最大的挑战,那就是如何成功地在有冲蚀、速率限制和难以清除泥浆的区域注入水泥。本文介绍了在哥伦比亚陆地作业中使用旋转水泥头进行固井服务的情况。套管下入工具(CRT)适配器提供了一个增强的系统,以减少卡钻风险并缩短起钻时间。为了提高效果,选择的主要解决方案是实施套管旋转;然而,执行必须安全有效地完成。顶驱水泥头通常用于海上作业。在哥伦比亚,使用顶驱水泥头是陆地作业中旋转中间套管和生产套管的安全解决方案。这种方法可以在不中断连接或关井作业的情况下进行钻机、压力测试和固井作业(包括整个作业过程中的旋转)。该系统的主要组成部分是水泥头本身,但也需要包含一个三重水套管,用于连接水泥头与套管和特定套管尺寸的固井塞。该系统通过集成一个适配器得到增强,该适配器允许将组件直接连接到CRT。这种配置使我们能够在作业过程中无需补接即可完成固井,从而降低了人员风险,节省了作业时间。在之前作业的安装过程中,需要断开套管下入工具,然后将水泥头连接到顶驱上。在某些情况下,执行这些操作的总时间约为1小时30分钟。在某些井中,这种额外的时间可能会增加卡钻的风险,并且在固井期间无法旋转套管。该系统经过改进,增加了一个CRT适配器,将水泥头连接到顶部驱动器,而无需断开CRT。该新系统将连接时间缩短至10分钟,同时可以安全地进行套管旋转,从而改善水泥隔离,从而降低卡钻风险。这种配置可以在高扭矩要求和卡钻风险的井固井期间进行套管旋转,同时改善环空固井的位置。该系统使操作更加安全、高效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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