原文：
Castrol has upgraded the Sub Surface Safety Valve (SSSV) test facilities at its International Testing Facility, Pangbourne, UK, allowing subsea control fluids to be subjected to the increasingly extreme conditions found in oil and gas exploration.
In downhole completions, Castrol subsea Automatic Control Valves control fluids are used to operate the SSSV, which sits in the flowing well stream and is the hottest part of a subsea system. This safety critical device acts as the final line of defense and seals the well in the event of an emergency.
Castrol's Pangbourne facility comprises two purpose-built SSSV test rigs designed to evaluate SSSV and subsea production control fluid performance at Butterfly Valves the conditions seen in the well. This means pressures of up to 20,000psi and temperatures in excess of 200°C. These fixtures are manufactured to the guidelines as defined in OTO 99 001 and incorporate the port, actuator, piston and seals (static and dynamic), and return spring as used in SSSVs. Each fixture is specific to a particular model of SSSV. Castrol Offshore works closely with the main SSSV vendors; Baker Oil Tools, Halliburton and Schlumberger (Camco), and has completed HP/HT qualification testing with all of their current SSSV designs.
The industry standard test (API 14) requires SSSVs Bellows Seal Valves to be qualified under a "hot cyclic" test regime, whereby the SSSV will be cycled from open to closed and back again for typically 600 cycles. However the API test takes only a few days to complete and does not incorporate extended hold-open periods that are normally experienced in the field. The standard API test does not therefore evaluate the closing characteristics after long hold-open periods or the behaviour of SSSV materials such as elastomers and plastics over extended periods at temperature and pressure; nor does it consider the behaviour of the subsea production control fluid under these conditions.
Chris Morrissey, Subsea Technology Team Leader for Castrol Offshore, explained why Castrol's tests exceed the industry standard: "Many upcoming deepwater projects fall into Extreme High Pressure and High Temperature conditions (EHP/HT). Ensuring that control fluids work reliably under these extreme conditions is critical for the safety and reliability of the production system; loss of function or excessive leakage can lead to lost production, with intervention work being both difficult and extremely expensive. Tests on Castrol Offshore's SSSV rigs include cyclic and static operation of the SSSV, with monitoring of the opening and closing profiles both during cyclic operation and after long static hold-open periods. The test runs for a total of three months and includes three static hold open periods of one month. Both rigs are fully automated and have triple redundancy on the measurement system. A wide range of additional checks can be made using the extensive analytical facilities available at Castrol's International Technology Centre in Pangbourne. These include detailed fluid elemental analysis, changes in physical characteristics and full statistical process measurement. All this means Castrol can drill down to a level of detail unavailable from other subsea fluid providers."
原文来自：http://www.oilonline.com/home/firms/?tx_ttnews%5Btt_news%5D=77602&cHash=2ee5e9df92

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译文：
嘉实多已经升级其国际检测设备，Pangbourne，英国，表层下安全阀（单议席单票）测试设备，允许海底控制流体遭受日益极端的石油和天然气勘探发现的条件。
在井下落成，嘉实多水下控制流体用于操作单议席单票，而它也是在流动的井流，是最热的海底系统的一部分。这种安全，国防和海豹的最后一行行为的关键设备以及在紧急情况下。
嘉实多的Pangbourne设施包括两个专用的单议席单票测试旨在评估以及在可见的单议席单票的条件和海底生产控制钻井液性能钻机。这意味着压力高达20,000 psi和在超过200 ° C的温度这些装置的制造，所界定的沃德99 001，包括了港口，执行器，活塞和密封的准则（静态和动态），并返回春天在SSSVs使用。每个夹具是特定的单议席单票特定模式。嘉实多与海洋工程主要单议席单票厂商合作;贝克石油工具，斯伦贝谢和哈里伯顿（Camco公司），并已完成高压/高温与目前的单议席单票设计的资格测试。
业界标准的测试（空气污染指数14），需要SSSVs有资格根据“热循环”检验制度，即单议席单票将由开放，关闭，然后再返回600周期的典型循环。不过，API的测试只需要几天才能完成，而且没有纳入延长认为，这通常是在该领域经验丰富的开放时间。测试的标准API因此，没有经过长期评估举行开放时间或诸如弹性及以上的温度和压力长时间塑料材料的单议席单票行为闭幕特点，也不考虑在这些海底的生产控制流体的行为条件。
克里斯莫里西，为嘉实多海洋水下科技组组长，解释了为什么嘉实多的测试超过行业标准：“许多即将举行的深水项目分为极端高压和高温条件（参见EHP /羟色胺）。确保流体控制下工作，这些极端条件下可靠是至关重要的安全和生产系统的可靠性，功能或过度渗漏损失可能导致生产损失的干预是对嘉实海外的单议席单票钻井既困难又非常昂贵。测试工作，包括循环和静态的单议席单票，操作与开幕式和闭幕式都在监测剖面循环运作，经过长期的静态举行开放时间。在试运行了三个月，共包括三个静态持有一个月开放时期。是完全自动化的这两套设备，并在三重冗余测量系统。另外，该检查范围广泛，可广泛使用在嘉实多的国际技术中心Pangbourne现有分析设施。其中包括详细的流体元素分析，在物理特性和全面的统计过程测量的变化。所有这些都意味着嘉实多可钻到的细节无法从其他海底液供应商的水平。“
本文引用：中国疏水阀网的Castrol Offshore upgrades subsurface safety valve
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