ESP and Completion Deployment using Dual Derrick Drill Ship Rigs

D. Lemos, J. Marins, R. D. Lima
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Abstract

This paper presents an innovative concept to run Electrical Submersible Pumps (ESP) and upper completion utilizing dual derrick drillship rigs in deep water wells. The availability of a second deck to assemble, test and rack long assemblies brings the possibility to conduct a safer, efficient and reliable operation. The experience in Brazil running complex completions and high horsepower ESPs shows how important is to implement initiatives to reduce rig time. The main objective of the new process is to have every completion tool readily available in the drilling deck, requiring minimum time to connect it to the completion string. In the standard process, the tool sits in the pipe deck until completion string reaches its set position and only then the equipment is brought into the rig floor to be serviced and made up to the completion string. The methodology to assemble ESP and completion tools offline in the auxiliary derrick was developed in partnership with the operator, the service company, and the drilling rig contractor. The offline preparation concept was considered as part of the completion design phase analyzing every step of the upper completion run, looking for efficiency improvement and reduced total rig time. The modern automated pipe handling system was used to manipulate the long and heavy assemblies from the auxiliary deck to the racking system and from the racking system to the main deck without any safety concern, and with minimal human intervention. Eight deep-water operations were completed in Brazil using the new concept and the results brought important rig time reduction in the upper completion running time. The tools that were part of the completion included DHSV, permanent downhole gauges, chemical injection valves, 1600 HP ESP system and tubing test valves. The new process allows the team to service equipment without the usual operation rush reducing installation related failure therefore increasing equipment reliability. The methodology presented on this paper contributes to oil industry as a field-proven reference for offshore ESP and completion deployment technique reducing HSE exposure and total well construction cost. This is particularly important for deep and ultra-deepwater projects which are associated with high intervention costs. Dual derrick rigs were designed with focus to improve drilling operations and after the new process development, the modern robotized machinery empowers ESP and completion activities with improved efficiencies.
使用双井架钻机的ESP和完井部署
本文提出了一种利用双井架钻机在深水井中下入电潜泵(ESP)和上部完井的创新概念。第二平台的可用性可以组装、测试和机架长组件,从而实现更安全、高效和可靠的操作。在巴西运行复杂完井和大功率esp的经验表明,实施减少钻机时间的措施是多么重要。新工艺的主要目标是使每个完井工具都能在钻井平台上随时可用,将其连接到完井管柱上所需的时间最短。在标准流程中,该工具放置在管板上,直到完井管柱到达其设定位置,然后将设备带入钻台进行维修并完成完井管柱。在辅助井架上离线组装ESP和完井工具的方法是由作业者、服务公司和钻机承包商共同开发的。离线准备概念被认为是完井设计阶段的一部分,分析上部完井作业的每一步,寻求提高效率和减少总钻机时间。现代自动化管道处理系统用于操纵从辅助甲板到货架系统以及从货架系统到主甲板的长而重的组件,没有任何安全问题,并且人工干预最少。在巴西使用新概念完成了8次深水作业,结果大大减少了上部完井作业时间。完井工具包括DHSV、永久性井下仪表、化学注入阀、1600hp ESP系统和油管测试阀。新工艺允许团队在没有常规操作匆忙的情况下维修设备,减少了与安装相关的故障,从而提高了设备的可靠性。本文提出的方法为石油行业的海上ESP和完井部署技术提供了现场验证的参考,降低了HSE风险和总建井成本。这对于修井成本高的深水和超深水项目尤为重要。双井架钻机的设计重点是改善钻井作业,在新工艺开发之后,现代自动化机械设备提高了ESP和完井作业的效率。
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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