Manufacturing method of insulation bearing shell of oil well logging instrument

Abstract

The invention relates to a manufacturing method of an insulation bearing shell of an oil well logging instrument. The traditional process is complex, and the oil can easily leak, thereby causing inconveniences to manufacture, application and maintenance. The bearing shell consists of 3 different materials. The manufacturing method comprises: winding a sub-structural tube of one third of the thickness of an overall product with high-performance fiber, injecting high-temperature epoxy adhesive through vacuum pumping, heat-curing, finishing the surface, bonding a PEEK tube or a ceramic tube with the thickness being 5mm and the sub-structural tube with a bonding agent, heat-curing the bonded structure as a whole, winding the outer surface with acid-resistant fiber to the required size, injecting the adhesive through vacuum pumping, and then heat-curing, thereby completing the manufacture of an outer structural tube. The formulation of the selected high-temperature-resistant resin is unique, and the high-temperature-resistant resin not only can satisfy the requirements for full permeation with the fiber, but also can satisfy the requirements for temperature resistance, pressure bearing and corrosion resistance. The applied forming process adopts the unique gumming method and the method of adhesive injection through vacuum pumping, the adhesive content can be controlled more accurately, and the product can be more compact.

Description

Technical field: [0001] The invention relates to the field of petroleum well logging instruments, in particular to a method for manufacturing an insulating pressure-bearing shell of petroleum well logging instruments. Background technique: [0002] In the exploration and development of the petroleum industry, an important task during the drilling process or after the completion of the drilling is to determine and analyze the crude oil downhole, including physical or chemical performance parameters such as the depth of the crude oil layer, the thickness of the crude oil layer, and the amount of crude oil. This requires petroleum logging instruments to do the job. [0003] As we all know, induction logging and electromagnetic wave logging instruments are an important part of conventional petroleum logging equipment. These instruments are generally composed of electronic circuits and probes (electrode system, coil system). The instrument probe is an electromechanical integratio...

AI Technical Summary

Problems solved by technology

Although the electrode system using oil pressure balancing technology has been used for many years, the process is complicated and the oil is easy to leak, which brings a lot of inconvenience to the production and application maintenance.

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