高含硫气井保温保压取样系统设计

设计了一套适用于6500 m井深的高含硫气井保温保压取样系统。该系统由井下取样器和地面转运器组成，能够实现高含硫气井取样及长时间保温保压转运，以保持样品的真实理化性态，提高PVT试验的有效性。井下取样器利用时钟控制器实现气样的自动采集和状态参数的全程记录，采用真空保温夹层结构和隔热涂层设计来实现井内取样过程的保温保压功能，同时将井下取样的结构设计成由电气控制舱与采气舱组成的可拆卸结构，方便地面转运。地面转运器为密封筒体结构，配套有电气控制系统，具有保温运输采气舱和H2S泄漏应急处理等功能。整个装置结构简单紧凑，功能完备，为深井高含硫天然气取样提供了一套安全可靠的装置。

Design on heat and pressure preservation sampling system for high sulfur gas well

A suit of heat and pressure preservation sampling system was designed in this paper, which is suitable for high sulfur gas wells in 6500m depth. It is made up of downhole sampling device (DSD) and ground transfer device (GTD), and can collect natural gas in high sulfur natural gas wells and long-time heat and pressure maintaining storage and transportation. So the using of this system can preserve real physicochemical properties of samples and enhance the effectiveness of PVT experiments. A clock controller was adopted in DSD to control automatic collection and record the state parameters in whole course and the vacuum heat preservation interlayer structure and heat insulation coating technique were used to ensure heat and pressure preservation function. Meanwhile, for convenient transferring, the structure of DSD is divided into two demountable parts: electric control chamber and gas sampling chamber. GTD is in a seal cylinder structure equipped with electric control system which possesses gas collection chambers maintaining heat and pressure storage and transportation for long time and H2S leaking emergency treatment abilities. In conclusion, the equipment is featured by compact structure and complete function. It can provide a suit of safe and reliable equipment for sampling in deep and high sulfur gas wells.