康博创业战略:携手共进!

J. Rolland, O. Bahabanian, Lorena Pena, S. Rouyer
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引用次数: 0

摘要

7月27日,“Kaombo Norte”号FPSO在安哥拉近海投产。当两艘fpso都处于稳定状态时,安哥拉最大的深海项目Kaombo将占该国石油产量的15%。它从分布在800平方公里范围内的6个油田生产轻质油。Gindungo、Gengibre和Caril油田与Norte FPSO相连,而Mostarda、Canela和Louro油田将在Sul FPSO上生产。整个开发项目以其海底网络规模而引人注目,在1500-2000米的水深范围内,海底线路超过300公里,包括距离生产设施超过25公里的海底生产井。为了确保安全的首次采油并顺利启动生产,进行了详细的跨部门研究。第一步是从头开始,忘记之前所有的启动方案:重新深入分析启动油气生产的三个候选环,以评估其优势和劣势。设立了一个由包括承包商在内的所有有关学科组成的工作队,以便采用跨职能的办法。分析了从油藏到上部的限制条件,提供了总体情况和明确的排序,以制定启动策略。调试活动的雄心勃勃的规划与相对短期的油藏管理相结合,对于锁定注水和天然气出口系统的生产循环优先级至关重要。共同完成的工作为安全启动和爬坡创造了宁静的环境。在评估之后,尽管产线具有挑战性,但还是决定首先启动最“强大”的储层。相对较高的初始压力和油欠饱和度、坚固的裸眼砾石充填完井和高产井有利于稳定海底网络中的多相流。仅仅15天后,第二个生产循环就开始了,生产得到了迅速的改善。注水系统的延期和立管底部气举的可用性经过了明智的计算:这些系统的准备就绪分别减缓了储层的自然枯竭,提高了井的喷发能力和流线的稳定性。我们有能力重新发明自己,并将个人优先事项抛诸脑后,从而在油田开发初期的出色生产水平上取得集体成功。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Kaombo Start-Up Strategy: Together We Throve!
The FPSO Kaombo Norte came on stream on July 27th offshore Angola. When both its FPSOs will be at plateau, Kaombo, the biggest deep offshore project in Angola will account for 15% of the country's oil production. It produces light oil from six fields scattered over an 800-square-kilometer area. Gindungo, Gengibre, and Caril fields are connected to the Norte FPSO while Mostarda, Canela, and Louro fields will be producing on FPSO Sul. The full development stands out for its subsea network size with more than 300 kilometers of lines on the seabed within 1500-2000m water depth, including subsea production wells more than 25km away from the production facility. In order to secure a safe First-Oil and to smoothly start-up the production, a detailed and cross-functional study was carried out. The first step was to start from a clean slate by forgetting all previous startup scenarios: the three loops candidate to start-up hydrocarbon production were re-analyzed in depth to evaluate strengths and weaknesses. A task force composed of all involved disciplines, including contractors, was put in place in order to apply a cross-functional approach. Constraints from reservoir up to topsides were analyzed providing an overall picture and clear ranking to develop the start-up strategy. An ambitious planning of the commissioning activities combined with a relatively short-term reservoir management were crucial to lock production loop priorities with water injection and gas export systems readiness. The work jointly performed contributed to serene environment for a safe start-up and ramp-up. Following the assessment, decision was made to start first the most "powerful" reservoir despite a challenging flowline. The relatively high initial pressure and oil undersaturation, the robust open-hole gravel-pack completions and high productivity wells were beneficial to stabilize the multiphase flow in the subsea network. Improvement of the production was rapidly made with the start-up of the second production loop only fifteen days after. Postponement of the water injection system and the availability of the riser base gas lift were judiciously calculated: the readiness of these systems arrived in due time to respectively slow down the natural depletion of the reservoirs and improve the wells eruptivity and stability of the flowlines. Our capacity to re-invent ourselves and leave behind individual priorities conducted to a collective success captured in the outstanding production levels since early days of field life.
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