故障排除电缆部署通过油管电潜泵:来自东南亚的案例研究

Saurabh Anand, E. A. Rosland, Elsayed Ouda Ghonim, L. Riyanto, Khairul Azhar Abu Bakar, Nurul Asyikin M. Radzuan, Nusheena Bt Mat Khair, S. M. Zaki
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引用次数: 0

摘要

马来西亚国家石油公司于2016年开始了雄心勃勃的穿越油管ESP之旅,并于2017年安装了全球首个真正的无钻机海上穿越油管ESP (TTESP)。为了复制第一次安装的成功,在t油田安装了TTESP。然而,这三个TTESP都未能将流体排出地面。本文提供了在这些井中查找故障原因的故障排除练习的完整细节。现场- T的3台TTESP按照程序安装完毕,准备投入使用。然而,在调试过程中,人们注意到ESP的排出压力没有增加,并且在运行15 - 30分钟后,TTESP由于高温而跳闸。因此,3个TTESP都无法成功调试。考虑到TTESP在马来西亚国家石油公司人工举升计划中的战略重要性,为了找到这三口井生产失败的根本原因,进行了详细的故障排除工作。该故障排除练习包括柴油机牛头,它提供了一些关键的泵性能相关数据。在T油田安装的3个TTESP尺寸为2.72英寸,在含水80%的情况下,平均产能为1500桶/天。TTESP的部署完全无需钻机,使用0.8英寸的ESP电缆进行安装。电潜泵和电缆使用悬挂-线轴系统从地面悬挂下来。整个系统比较复杂,为了确保安装成功,需要正确的安装步骤。在调试和故障排除过程中收集的大量数据用于确定故障原因,包括准备静态和动态井ESP模型。经过详细的技术调查工作,团队认为已经找到了问题的根本原因,解释了在调试和故障排除阶段获得的数据。本文将介绍详细的故障排除流程和获得的实际数据。还将提出一份全面的经验教训清单,其中包括在设计和安装TTESP期间需要考虑的非常重要的方面。补救计划已定案,并将在下一个可用的天气窗口执行。安装TTESP的主要优点是成本低,仅为海上钻机式ESP修井的20% - 30%。因此,预计TTESP的安装将在全球范围内兴起,对于任何运营商来说,充分了解TTESP系统和潜在的痛点都是非常重要的。PETRONAS一直是TTESP领域的先驱,本文将详细介绍TTESP开发过程中的学习曲线。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Troubleshooting Cable Deployed Thru Tubing Electrical Submersible Pumps: A Case Study from South East Asia
PETRONAS had embarked on an ambitious thru tubing ESP journey in 2016 and had installed global first truly rig less offshore Thru Tubing ESP (TTESP) in 2017. To replicate the success of the first installation, TTESP's were installed in Field – T. However, all these three TTESP's failed to produce fluids to surface. This paper provides the complete details of the troubleshooting exercise that was done to find the cause of failure in these wells. The 3 TTESP's in Field – T were installed as per procedure and was ready to be commissioned. However, during the commissioning, it was noticed that the discharge pressure of the ESP did not build-up and the TTESP's tripped due to high temperature after 15 – 30 mins of operation. Hence none of the 3 TTESP's could be successfully commissioned. Considering the strategic importance of TTESP's in PETRONAS's artificial lift plans, detailed troubleshooting exercise was done to find the root cause of failure to produce in these three wells. This troubleshooting exercise included diesel bull heading which gave some key pump performance related data. The three TTESP's installed in Field – T were of size 2.72" and had the potential to produce an average 1500 BLPD at 80% water cut. The TTESP deployment was fully rigless and was installed using 0.8" ESP power cable. The ESP and the cable was hung-off from the surface using a hanger – spool system. The entire system is complex, and the installation procedure needs to be proper to ensure a successful installation. The vast amount of data gathered during the commissioning and troubleshooting exercise was used for determining the failure reason and included preparation of static and dynamic well ESP model. After detailed technical investigative work, the team believes to have found the root cause of the issue which explains the data obtained during commission and troubleshooting phase. The detailed troubleshooting workflow and actual data obtained will be presented in this paper. A comprehensive list of lessons learnt will also be presented which includes very important aspects that needs to be considered during the design and installation of TTESP. The remedial plan is finalized and will be executed during next available weather window. The key benefit of a TTESP installation is its low cost which is 20% – 30% of a rig-based ESP workover in offshore. Hence it is expected that TTESP installations will pick-up globally and it's important for any operator to fully understand the TTESP systems and the potential pain points. PETRONAS has been a pioneer in TTESP field, and this paper will provide details on the learning curve during the TTESP journey.
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