首页> 外文会议>Society of Petroleum Engineers Annual Technical Conference and Exhibition >The Development and Field Performance of a Novel Open Hole Packer System for Deep Water, High Rate, Water Injection Wells With Down Hole Flow Control. A Deep Water Field Case History
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The Development and Field Performance of a Novel Open Hole Packer System for Deep Water, High Rate, Water Injection Wells With Down Hole Flow Control. A Deep Water Field Case History

机译:深水,高速,水注入井下孔流量控制的新型开放孔包装系统的开发和现场性能。深水实地案例历史

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Greater Plutonio is a 5 field subsea, deepwater project, located offshore Angola. Development began in 2005 and 38 wells have now been completed in highly permeable but poorly consolidated Oligocene reservoirs. Production commenced in October 2007 and is supported by injection of over 350mbd of water into 21 water injectors, predominantly completed with Stand Alone Screens. As the fields have multiple stacked reservoirs, dual zone downhole flow control (DHFC) is advantageous in many water injectors as it allows better control of injection conformance and / or a reduction in well count. During the design phase, it was recognized that although much of the hardware for DHFC systems for water injectors was field proven, the ability to create a long term seal between zones with openhole completions, especially in the deepwater environment, was a significant challenge that had not yet been addressed by the industry. The key challenges were: High differential pressure rating (3000psi). Achieve a robust seal in non-circular wellbores. Large axial load resulting from temperature reduction and differential pressure (>400,000lbs). Large number of injection and shut-in cycles occur over life of well. Large changes in temperature and consequently axial loading occur with each cycle. Following a technical evaluation, a novel dual cup packer concept with integral sliding movement joint and openhole packer slips was selected. This was followed by a 2.5 year rigorous design and qualification period prior to field installation1. 8 DHFC water injection wells have now been installed in Greater Plutonio, and downhole pressure data shows that the cup packers are providing robust high pressure seals after 3.5 years of high rate water injection. The cup packer system has produced a step change in openhole packer technology that has facilitated installation of reliable DHFC water injection wells at scale in the deepwater environment.
机译:Greater Plutonio是一家5场海底,深水项目,位于安哥拉近野。开发始于2005年,现在已经在高渗透性但良好的寡核苷储层中完成了38个井。生产于2007年10月开始,并通过将超过350MBD水注入21个水注射器的支持,主要由独立屏幕完成。由于磁场具有多个堆叠储存器,双区域井下流量控制(DHFC)在许多水喷射器中是有利的,因为它允许更好地控制注射符合和/或井数减少。在设计阶段,虽然用于水喷射器的DHFC系统的大部分硬件是现场证实的,但在具有透露孔完井之间产生长期密封的能力,特别是在深水环境中,是一个重要的挑战尚未由行业解决。关键挑战是:高分压力等级(3000psi)。在非圆形井筒中达到坚固的密封。由温度降低和差压(> 400,000LB)产生的大轴向载荷。大量的注射和关闭循环在良好的寿命中发生。每个循环发生均匀的温度变化并因此发生轴向载荷。在技​​术评估之后,选择了一种具有整体滑动接头和遮蔽锁层滑动的新型双杯封隔器概念。在现场安装之前,这是2.5年的严格设计和资格期间。 8 DHFC水注入井现在安装在更大的冥王星中,井下压力数据显示杯子封装机在高速注水3.5年后提供稳健的高压密封。杯子封隔器系统已经在深水环境中促进了露天封隔器技术的步骤变化,该技术促进了在深水环境中刻度的可靠性DHFC水注入井。

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