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首页> 外文会议>International Petroleum Technology Conference >A Novel Autonomous Inflow Control Device:Design,Stracture Optimization,and Fluid Sensitivity Analysis
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A Novel Autonomous Inflow Control Device:Design,Stracture Optimization,and Fluid Sensitivity Analysis

机译：一种新型的自主流入控制装置：设计，障碍优化和流体敏感性分析

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In long horizontal wells,early water or gas may breakthrough into the wellbore due to the imbalanced production profile caused by the heel-toe effect,reservoir anisotropic,reservoir heterogeneity or fracture- existing.Once coning occurs,oil production may severely decrease due to the limited flow contribution from the non-coning regions.Inflow control devices(ICD)are installed to maintain the flow across production zones uniformly by creating an additional pressure differential which cancels out the imbal- anced production profile.This will lower startup production,however,unwanted fluids from breaking through are significant delayed,and total oil production is maximized.Unfortunately,once water/gas does break through,they will take over the well,significantly reducing oil production. In this paper,a novel autonomous inflow control device(AICD)design is proposed based on the combination of the Y-shaped fluid director and the disk-shaped restrictor.The proportion of flow through different paths of the fluid director will be adjusted automatically according to its fluid property and the stracture parameters,thus enter the restrictor differently and result in different flow resistances.The stracture parameters are then optimized,which enables the well to continue producing oil for a longer time while limiting water.And on the basic of optimized results,the influences of fluid with varying properties (flow rate,water content,and oil viscosity)are further discussed.The results show that the novel design has good performances during every phase of a well’s life:high plugging resistance at startup,high erosion-resistant during peak production,continuous inflow control and low viscosity sensitivity during declining,and significantly flow resistance increase at eventual water onset.
机译：在长水平井中，由于产后脚趾效应引起的生产曲线，储层各向异性，储层异质性或骨折 - 现有的储层发生，储层发生，因此，早期水或气体可能突破进入井筒。发生，由于发生举射，因此可能会因储存围栏而导致的油生产可能严重降低从非锥形区域的有限流动贡献。安装控制装置（ICD），通过创建额外的压差来维持跨越生产区的流量，该额外的压差差异取消了突破性的生产剖面。这将降低启动生产，然而，不需要的液体突破是显着的延迟，并且总油生产最大化。幸运的是，一旦水/天然气突破，它们将接管井，显着减少石油生产。在本文中，提出了一种基于Y形流体导向器和盘形限制器的组合的新型自主流入控制装置（AICD）设计。通过流体导向器的不同路径的流动比例将自动调节为了其流体性能和曲线参数，从而不同地进入限制性并导致不同的流动性。然后优化障碍参数，使得能够在限制水的同时继续生产较长时间的良好。结果，进一步讨论了流体具有不同性质（流速，含水量和油粘度）的流体的影响。结果表明，新颖的设计在井寿命的每一阶段都具有良好的性能：启动时的高堵塞性，高侵蚀 - 在峰值生产期间，在衰退期间，连续流入控制和低粘度灵敏度，最终发生的流量显着增加发病。

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