A fast loading and unloading adjustable deflection multi-stage sealing blowout preventer

Abstract

The invention relates to a quick loading and unloading adjustable deflection multi-stage sealing blowout preventer, which includes a positioning base, a universal flange joint, a sealing chamber, a packing box, a control valve, and a sealing ring, wherein the positioning base is connected to the control valve through the positioning base. The wellhead of the pumping unit is connected and distributed coaxially. The positioning base is connected to the universal flange joint, and communicates with the sealing chamber through the universal flange joint. The sealing chamber is connected to the bottom of the packing box, and the top of the packing box is connected to the The universal flange joint communicates with the sealing chamber, wherein the packing box includes the packing box body, the gland, the upper pressing cap, the lower pressing cap, the guide sleeve and the sealing ring, and the sealing chamber includes the end cover, the chamber, the elastic sealing plate and Seal platen. The new type effectively improves the maintenance and replacement efficiency of the equipment, and can effectively adjust the concentricity of the polished rod. At the same time, when the packing sealing mechanism is replaced, it can also effectively perform multi-stage sealing on the wellhead and the oil passage, thereby Effectively put an end to the phenomenon of oil injection at the wellhead caused by the removal of the packing.

Description

technical field [0001] The invention relates to a quick loading and unloading adjustable deflection multi-stage sealing blowout preventer, which belongs to the technical field of wellhead sealing equipment for oil extraction machine wells. Background technique [0002] At present, in the process of crude oil extraction, the wellhead is mainly sealed by the packing box, so as to meet the smooth lifting of crude oil production, and to prevent the waste of resources and equipment damage caused by the original leakage from the wellhead position, but in actual use Among them, due to the construction of motor wells and other reasons, it is often difficult to maintain the concentricity between the wellhead of the oil production machine well and the polished rod and the drive head of the oil production device. As a result, the sealing performance of the packing box is fast, and on the other hand, it also causes serious wear and tear on the polished rod itself, which easily causes oi...

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Problems solved by technology

[0002] At present, in the process of crude oil extraction, the wellhead is mainly sealed by the packing box, so as to meet the smooth lifting of crude oil production, and to prevent the waste of resources and equipment damage caused by the original leakage from the wellhead position, but in actual use Among them, due to the construction of motor wells and other reasons, it is often difficult to maintain the concentricity between the wellhead of the oil production machine well and the polished rod and the drive head of the oil production device. As a result, the sealing performance of the packing box is fast, and on the other hand, it also causes serious wear and tear on the polished rod itself, which easily causes oil leakage and increases the replacement and maintenance of the packing box and oil production polished rod equipment, affecting the stability of oil production. At the same time, when the current packing box is repaired and replaced, due to the lack of necessary protective measures, it is very easy to cause oil injection when the packing box is directly removed, resulting in serious waste of resources. And it may cause damage to personnel and equipment, which poses a great threat to production safety. In order to solve this problem, at present, when replacing the sealing parts of the packing box, it is mainly by maintenance personnel without removing the packing box. Pick out the sealing parts of the packing box and press them into new sealing parts. Although this method can meet the needs of repairing the sealing performance of the packing box, the workload is huge and the work efficiency is low. At the same time, it will also cause Crude oil leakage, so in view of this phenomenon, it is urgent to develop a new type of oil extraction machine well inlet sealing blowout preventer structure to meet the needs of actual use

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