Conventional gas detectors are widely used and accepted as the standard gas leak detection throughout the oil and gas industry. This detection method uses technology which requires gas to enter a fixed point gas or pass through the path of a linear detector. As it requires either direct physical contact between the detector sensor and the gas or a disruption of a reflected beam path, it can be unreliable in open areas e.g. due to wind direction, beam block or stratification of the gas. Consequently, there is an increasing use of ultrasonic detection technology to 'listen' for gas leaks. This ultrasonic detection detects releases from pressurized gas systems by sensing the airborne ultrasounds produced by the gas escaping. Following a significant hydrocarbon gas release in a platform processing area, which the existing detection system had failed to pick up PTTEP, Thailand's major oil and gas exploration and production company, initiated evaluation of the ultrasonic leak detection technology as a method increase risk mitigation and the overall effectiveness of existing fire and gas systems. The field trial of ultrasonic leak detection was done in cooperation with Denmark based Gassonic A/S, the leading manufacturer of fixed ultrasonic gas leak detectors. The trial result was that the ultrasonic leak detector, the Gassonic Observer, performed well emphasizing its ability to pick up ultrasonic noise in the frequency ranges it is supposed to. Through out the trial period, there were no cases of false alarms. Though no gas release incidents occurred in the vicinity of the detector during the trial period, the detector did detect ultrasonic noise from operations, such as choke valve adjustment or wireline operations. Proper detector settings could reduce such influences from operational sources, and increase release detection viability. In conclusion, PTTEP will implement ultrasonic gas leak detection as a supplementary gas leak detection system in order to compliment and improve the existing fire and gas system in the Bongkot field.
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机译：常规的气体检测器在整个石油和天然气工业中被广泛使用并被接受为标准的气体泄漏检测器。这种检测方法使用的技术要求气体进入定点气体或通过线性检测器的路径。由于它要么需要探测器传感器与气体之间的直接物理接触，要么需要反射光束路径的中断，所以在开阔的区域（例如大面积的区域）可能不可靠。由于风向，光束阻塞或气体分层。因此，越来越多地使用超声波检测技术来“监听”气体泄漏。这种超声波检测通过感测气体逸出所产生的空气传播超声波来检测来自加压气体系统的释放。在平台处理区内大量碳氢化合物气体释放（现有检测系统未能采用PTTEP）之后，泰国主要的油气勘探和生产公司开始评估超声泄漏检测技术，以此作为降低风险的方法，并且现有消防和煤气系统的整体效率。与固定气体超声波检漏仪的领先制造商丹麦的Gassonic A / S合作完成了超声波泄漏检测的现场试验。试验结果是，超声波检漏仪Gassonic Observer表现出色，强调了其在预期频率范围内拾取超声波噪声的能力。在整个试用期间，没有虚假警报的案例。尽管在试验期间在检测器附近未发生气体释放事件，但检测器确实检测到来自诸如节流阀调节或电缆操作等操作的超声波噪声。正确的检测器设置可以减少来自操作源的此类影响，并提高释放检测的可行性。最后，PTTEP将实施超声波气体泄漏检测作为补充气体泄漏检测系统，以补充和改善Bongkot领域中现有的火灾和气体系统。
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