ISO 28781:2010规定了石油和天然气行业使用的地下隔离阀和相关设备的要求。包括设计、设计验证、制造、功能评估、维修、纠正、搬运和储存的要求。地下屏障阀提供了一种隔离地层或在管道中形成屏障的方法，以促进油井中进行生产前和/或生产后/注入操作活动。 地下屏障阀并非设计为紧急或故障安全流量控制安全装置。 ISO 28781:2010不包括安装和维护、计算机系统等控制系统，以及与隔离阀不整合的控制导管。 ISO 28781:2010中还未包括ISO 17078、ISO 16070、ISO 14310、ISO 10432、ISO 10423所涵盖的产品，以及以下产品:井下节流阀、井口塞、滑动套筒、套管安装流量控制阀、注入阀、井况激活阀或钻柱测试工具。ISO 28781:2010不包括与油井导管的连接。

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.