Quick assembling and disassembling heat-preserving device for christmas tree

Abstract

The invention discloses a quick assembling and disassembling heat-preserving device for a christmas tree, which comprises a large four-way heat-preserving jacket, a small four-way heat-preserving jacket, a head gate valve bank heat-preserving jacket, a casing pipe valve bank heat-preserving jacket, a gas production valve bank heat-preserving jacket and a pressure measuring valve heat-preserving jacket. According to the structural characteristic of the christmas tree, split heat-preserving structures are adopted, and the split structures are arranged detachably in an embedded mode by casing pipe structures and have high internal and external tightness, so compared with the prior art, the quick assembling and disassembling heat-preserving device has better heat-preserving effect; and each split structure is an independent unit and is disassembled without a crane, so labor cost is saved, the integrity of the device can be ensured, and the device can be prevented from being damaged and can be disassembled and assembled repeatedly. When the device is used for heat preservation of the christmas tree, the characteristics of assembly and disassembly of the device and repeated use are demonstrated, the time for disassembling and assembling the heat-preserving device during the overhauling of the christmas tree is shortened, the work efficiency is improved, the sanitation of assembly environment and the cleaning of equipment can be ensured, a gas production system can run economically and the energy is saved.

Description

technical field [0001] The invention relates to the field of heat preservation and heat insulation, in particular to a heat preservation device for gas trees in oil and gas fields. Background technique [0002] The gas tree refers to the part above the tubing head in the wellhead device; it mainly includes the large cross, the main valve group, the small cross, the gas production valve group, the pressure measuring valve and the casing valve group. Between the four-way and the small four-way, two sets of gas production valve groups are symmetrically connected to the small four-way, and two sets of casing valve groups are also symmetrically connected to the large four-way. The key part of the tubing connection; the small cross is used for gas production, blowout or well killing; the gas production valve group is used for gas production of the switch well, including two main valves and a needle valve, of which the needle valve is mainly used to regulate the gas well Pressure ...

AI Technical Summary

Problems solved by technology

Since the gas tree has the above-mentioned relatively complex structure, its thermal insulation structure is also relatively complicated

In the prior art, more rock wool and protective layer structures are used, which do not have integrity, so the thermal insulation effect is not ideal, the weather resistance to the environment is poor, it is easy to fall off, difficult to disassemble, and cannot be used again after disassembly. The industrial environment causes pollution and wastes repair and maintenance costs

[0004] In order to solve the above-mentioned problems, an integral thermal insulation structure of the gas tree has appeared. Due to the bulky integral structure, each disassembly and assembly requires the cooperation of 8 to 10 people at the same time, and the assistance of a crane is required, which makes disassembly and assembly difficult; during the dismantling process, equipment and instruments Easy to damage, difficult to repair, difficult to re-install after repair, resulting in long repair period, high cost, and the gas trees in each gas station are far apart, about one kilometer or several kilometers away, resulting in a large investment in each disassembly Labor and Capital Costs

Due to the overall production or pouring and curing molding, there are many thermal insulation dead angles, and its thermal insulation effect is not ideal

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