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首页> 外文会议>SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition >Case Study: Innovative World's Slimmest Coiled Tubing Tractor for Stimulation of Extended Reach Wells
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Case Study: Innovative World's Slimmest Coiled Tubing Tractor for Stimulation of Extended Reach Wells

机译：案例研究：创新世界上最纤过的卷管拖拉机，用于刺激延长井

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In extended Reach wells, existing coiled tubing (CT) technologies were unable to pass narrow downhole restrictions and reach target depth (TD) for stimulation operations. Overcoming current limitations in extended reach downhole tools resulted in the development and field use of a slim, compact, and record-setting high pull- force tractor that enables rig-less stimulation, thereby maximizing production and cost effectiveness. A development project evaluated multiple tractor design concepts, yielding a new generation of an ultra-slim (2- 1/8 inch OD) and high pulling force tractor. Exhaustive shop, yard, and flow loop testing verified the tractor’s ability to reliably pull in both cased and open hole, employ multiple layers of failsafe technologies, and facilitate rigging up with simpler and less expensive operations. A series of wells with increasing depth and difficulty were used to demonstrate the technology for field use. The design process verified that the new generation tractor efficiently moves in an accordion-like motion, grips the roof of the hole with an eccentric gripper assembly, and is powered by differential pressure created by pumping fluid down the CT centerline. Shop and Flow Loop testing verified that the eccentric gripper automatically orients itself to engage the high side of the hole, thereby providing an excellent and debris-free surface for traction. Flow Loop testing verified that tractor’s ability to circumnavigate high dog leg severity well bores. In one field demonstration, the tractor successfully passed a 2.44 inch restriction, conveyed coiled tubing 2400 feet past lockup reaching well TD of almost 21,400 ft, and averaged 15 feet per minute while running in hole. The benefits of this technology come in the successful operation of a tractor that produces up to 3500 lbs. pulling force, collapses to 2-1/8 inch outside diameter, and operates in 6-1/8 to 7-1/2” inch diameter open hole. The paper summarizes the research and development of this innovative world's slimmest coiled tubing tractor for stimulation of extended reach wells. It discusses a recent field trial operation including the yard and function surface tests to prepare for this field trial. The paper also explains in details how this technology was successfully deployed, in addition to the broad implications resulting from production engineers having this technology in their tool box, which will permit them to ensure cost efficient operations, maximize production, and will enable rig-less intervention of restricted extended reach wells all over the world.
机译：在延长的距离井中，现有的盘管（CT）技术无法通过窄井下限制并达到刺激操作的目标深度（TD）。延长覆盖井下工具的电流限制导致开发和现场使用纤细，紧凑，记录的高压拖拉机，使得能够减少刺激，从而最大限度地提高生产和成本效益。一种开发项目评估了多个拖拉机设计概念，产生了新一代超薄（2-1/8英寸OD）和高拉力拖拉机。彻底的商店，院子和流量回路测试验证了拖拉机可靠地拉动套管和开孔的能力，采用多层故障安全技术，并便于索取更简单，更便宜的操作。使用增加深度和难度的一系列井来展示现场使用的技术。设计过程验证了新一代拖拉机以手风琴样运动有效地移动，用偏心夹持器组件抓住孔的屋顶，并通过通过向CT中心线泵送流体产生的差压而动力。商店和流回路测试验证了偏心夹具自动造成孔的高侧，从而为牵引力提供优异的无丝虫表面。流量回路测试验证了拖拉机对高狗腿严重程度的能力。在一个场地演示中，拖拉机成功地通过了2.44英寸的限制，输送了2400英尺的锁定速度达到近21,400英尺的井，并且在孔中运行时平均为15英尺。该技术的好处进入了拖拉机的成功运行，这些拖拉机产生高达3500磅。拉力，折叠到外径2-1 / 8英寸，并在6-1 / 8至7-1 / 2“英寸直径开孔中。本文总结了这一创新世界上最斜线管拖拉机的研发，用于刺激延伸井。它讨论了最近的实地试验操作，包括院子里和功能表面测试，以准备此实地试验。本文还详细解释了该技术如何成功部署，除了由工具箱中具有这项技术的生产工程师产生的广泛影响，这将允许他们确保经济高效的操作，最大化生产，并将延长生产受限制延伸到井的干预井。

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