Sand control screens are installed with an internal string (wash pipe) as required which, among other functions, provides a circulation path. In long horizontal wells, running a wash pipe consumes considerable rig time and may limit the ability to reach target depth. In cases in which fluid losses are experienced after screen installation, isolating the open hole with a fluid-loss control valve can be prolonged. This paper describes a wash-pipe-free solution for screen installation using a check-valve inflow control device (CV-ICD).

ICD screens are commonly used to delay/restrict the influx of unwanted fluids such as gas or water. The wash-pipe-free solution integrates a check valve with the ICD to prevent outflow through the screen during circulation and allows inflow through the screen when placed on production. This solution uses a check ball that seals against the ICD during circulation but falls back on a porous retainer plate during production. The check ball and retainer plate can be dissolved by spotting a reactive fluid inside the screen or made to erode over time with production.

Laboratory testing yielded the following results: the ICD with the check ball was shown to seal up to 5,000 psi; the check ball and retainer plate can be dissolved by a reactive fluid, which can be tailored to bottomhole temperature and the required time of dissolution; and the pressure activation test demonstrated that the maximum differential pressure to seat the ball was less than 5 psi.

This CV-ICD solution has been applied worldwide in more than 35 wells, most of which were targeted to avoid running a wash pipe. However, in two wells the technology was successfully used to set openhole packers with a 5,000-psi setting pressure. In this paper, we present the wash-pipe-free ICD screen installation with a dissolvable check valve and the capability of setting a hydraulic packer without a wash pipe or intervention in the open hole. The novel contribution presented herein is the ability to integrate a ball and cage to existing nozzle-based ICDs by using dissolvable material to achieve the preceding results in this application.

防砂滤网根据需要安装有内部管柱（冲洗管），除其他功能外，它还提供了循环路径。在较长的水平井中，运行冲洗管会占用大量的钻机时间，并且可能会限制达到目标深度的能力。如果在安装滤网后出现流体流失的情况，则可以延长用流体损失控制阀隔离开孔的时间。本文介绍了一种使用单向阀流入控制设备（CV-ICD）的用于筛网安装的免冲洗管道解决方案。

ICD筛网通常用于延迟/限制有害气体（例如气体或水）的流入。免冲洗管道解决方案将单向阀与ICD集成在一起，以防止在循环过程中流经筛网，并在投入生产时允许流经筛网。该解决方案使用了一个止回球，该止回球在循环过程中与ICD密封，但在生产过程中会落在多孔的固定板上。可以通过在筛网中点入一种反应性流体来溶解止回球和固定板，或者在生产过程中随着时间的流逝而使其腐蚀。

实验室测试得出以下结果：显示带有止回球的ICD密封可达5,000 psi；止回球和固定板可以用反应液溶解，可以根据井底温度和所需的溶解时间进行调整；压力激活测试表明，使球落座的最大压差小于5 psi。

这种CV-ICD解决方案已在全球范围内超过35口井中得到应用，其中大多数目标是避免运行冲洗管。但是，在两口井中，该技术已成功用于设定设定压力为5,000 psi的裸眼封隔器。在本文中，我们介绍了带有可溶止回阀的无冲洗管道ICD筛网安装，以及无需冲洗管道或无需干预裸眼即可设置液压封隔器的功能。本文提出的新颖贡献是能够通过使用可溶解材料在现有应用中将球和保持架集成到现有的基于喷嘴的ICD上的能力。