25000psi ultra-high temperature and high pressure large drift diameter drilling and production integrated wellhead device

Abstract

The present application relates to the oil field oil production technical field, disclose 25000PSI super high temperature and high pressure big drift diameter drilling and mining integrated wellhead device.Pipe body mechanism includes main pipeline, the adapter flange that is arranged in the top of main pipeline, the oil discharge passage that is opened in the inner wall of main pipeline and adapter flange, the tubing hanger in the inner wall of oil discharge passage;Fastening mechanism includes the slot that is arranged in one side of main pipeline, the auxiliary sleeve that is located in the slot both sides, the fastening bolt in the slot, the control sleeve that is arranged in one end of fastening bolt and plugging mechanism, including the self-excitation type sealing gasket ring that is arranged in main pipeline, the combined metal seal ring that is installed in the bottom of main pipeline, the auxiliary sealing unit below combined metal seal ring.The present application optimizes the loosening hidden danger that top silk is prone to appear in high pressure vibration environment, adopts the form of metal + rubber auxiliary, realizes reliable sealing under super high temperature and high pressure and high CO2, H2S corrosion, is convenient for on-site personnel's quick learning use, greatly improves the assembly efficiency of on-site wellhead.

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