Shengli Oilfield R&T Group

螺纹（心轴）式套管悬持器   casing hangers, threaded(mandrel)   在套管头内用套管上的外螺纹或内螺纹连接心轴以悬挂管柱的机构。  In the casing head, the external or internal threads connected to the spindle are connected to the mechanism of the hanging string. 套管县挂器（卡瓦） casing hangers, (slips)   在套管头内用楔形器件夹持套管，以悬挂套管柱的装置。 In the casing head, the sleeve is fitted with a wedge device to hang the casing string. 套管头壳体 casing head housing 连接表层套管的最上端，用于悬挂和密封套管柱的装置。 A device that connects the top end of the surface casing for suspension and sealing of the casing string. 套管头四通 casing head spool 连接在套管头上，用于悬挂和密封其它套管柱的装置。 A device attached to a casing head for suspension and sealing of other casing columns. 节流阀 chock ( choke manifold for sale ) 限制和调节流体流量的阀  A valve that restricts and regulates fluid flow. 采油树 Christmas tree, or xmas tree, oilfield christmas tree 装于油管头最上部法兰上的阀门和附件的组合装置，用于控制井的产量。 A combination of valves and accessories installed on the top fl...

1. Inspection and maintenance of wellhead pulley 2. Check and maintain the tension meter 3. Inspection and maintenance of magnetic markers 4. Inspection and maintenance of the scraper wellhead assembly 5. Inspection and maintenance of collector rings 6. Check and maintain the logging depth measurement device The  gas wellhead device  should be maintained at least half a year, for a hydrogen sulphide content of more than 3000mg/m3 or more than 5m3/d of gas  wellhead valve  should be maintained every quarter. Maintenance content should include more than 2 times valve switch activities, butter filling, sealing check, accessories maintenance, gas extraction wellhead clean, compressed anti-corrosive paint repair, heat preservation, etc., to ensure that the gas extraction wellhead complete, no rust, no leakage, flexible valve switch, no leakage, normal use of attached parts, anti-corrosion insulation in good condition. Gas extraction wellhead  maintenance should fill ...