A high temperature submersible electric pump wellhead traverser structure

Abstract

A high-temperature submersible electric pump wellhead traverser structure, in which a first-level sealing chamber and a second-level sealing cavity are respectively arranged in the sealing body, a first-level sealing assembly is arranged in the first-level sealing chamber, and a second-level sealing assembly is arranged in the second-level sealing chamber Assemblies, the cables pass through the primary sealing assembly and the secondary sealing assembly in turn for double-stage sealing; the primary sealing assembly includes a sealing block and a compression block, and the sealing block and compression block pass through the threading hole and are set on the cable from top to bottom , there is an annular pressure gap between the two, and the first compression spring is installed between the compression block and the sealing body; the secondary sealing assembly includes a wave seal sleeve, which is set on the cable, and the wave seal sleeve and There is a pressure oil pressurized chamber between the sealing blocks, and a second compression spring is installed between the wave seal sleeve and the sealing body; the second-stage sealing ability of the present invention is higher than the first-stage sealing ability, and is expressed as the sealing ability The step-by-step increase effectively ensures the sealing reliability of the wellhead penetrator when a blowout occurs.

Description

technical field [0001] The invention belongs to the technical field of high-temperature submersible electric pumps, and in particular relates to a wellhead traverser structure of high-temperature submersible electric pumps. Background technique [0002] For the electric submersible pump, its working power needs to be connected with the electric submersible pump through the cable, but the working power is located on the ground, while the electric submersible pump is located in the underground, so the cable must pass through the wellhead from the ground to the underground. A wellhead traverser is required. [0003] When the oil well is working, the pressure above the wellhead is atmospheric pressure and the temperature is the ambient temperature, while the annular pressure below the wellhead is about 1MPa, and the temperature can reach about 180°C. At this time, the wellhead traverser must work under high temperature and high pressure. However, the existing structure of the w...

AI Technical Summary

Problems solved by technology

However, the existing structure of the wellhead penetrator is not ideal in terms of temperature resistance and pressure resistance, especially when a blowout occurs, the wellhead penetrator will often fail to seal in the face of instantaneous high pressure, and there is no better for high-temperature oil wells so far. the solution

Images