石油与天然气工业.钻探与生产设备.地下障碍阀与相关设备

[中文适用范围]： 本标准规定了石油和天然气工业中使用的井下屏障阀及相关设备的要求，这些设备在本标准中定义。其中包括设计、设计验证、制造、功能评估、维修、整修、搬运和储存的要求。井下屏障阀提供了一种隔离地层或在油管中创建屏障的手段，以促进井内生产前和生产后/注入作业活动的执行。井下屏障阀并非设计为紧急或故障安全流量控制安全装置。本标准不涵盖安装和维护、控制系统（如计算机系统）以及与屏障阀不集成的控制导管。此外，本标准也不涵盖ISO 17078、ISO 16070、ISO 14310、ISO 10432、ISO 10423所涵盖的产品，以及以下产品：井下节流器、井口堵头、滑套、套管式流量控制阀、注入阀、井况激活阀或钻杆测试工具。本标准不涵盖与井导管的连接。 [外文原描述]： ISO 28781:2010 provides the requirements for subsurface barrier valves and related equipment as they are defined herein for use in the petroleum and natural gas industries. Included are the requirements for design, design validation, manufacturing, functional evaluation, repair, redress, handling and storage. Subsurface barrier valves provide a means of isolating the formation or creating a barrier in the tubular to facilitate the performance of pre- and/or post-production/injection operational activities in the well. The subsurface barrier valve is not designed as an emergency or fail-safe flow controlling safety device. ISO 28781:2010 does not cover installation and maintenance, control systems such as computer systems, and control conduits not integral to the barrier valve. Also not included in ISO 28781:2010 are products covered under ISO 17078, ISO 16070, ISO 14310, ISO 10432, ISO 10423 and the following products: downhole chokes, wellhead plugs, sliding sleeves, casing-mounted flow-control valves, injection valves, well-condition-activated valves or drill-stem test tools. ISO 28781:2010 does not cover the connections to the well conduit.