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Device and method for transferring pressure to downhole electronic components by pressure transfer media

A technology for transmitting media and electronic components, applied in construction and other directions, can solve the problems of pressure difference, occupying downhole tool space, increasing the complexity and cost of downhole tools, reducing volume, reducing temperature and pressure resistance requirements, increasing The effect of heat conduction

Inactive Publication Date: 2019-04-05
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such pressure vessels create significant pressure differentials, add complexity and cost to downhole tools, and take up valuable real estate in downhole tools

Method used

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  • Device and method for transferring pressure to downhole electronic components by pressure transfer media
  • Device and method for transferring pressure to downhole electronic components by pressure transfer media
  • Device and method for transferring pressure to downhole electronic components by pressure transfer media

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the invention.

[0029] First of all, it should be explained that the electronic components described in this embodiment include digital electronics, signal conditioning electronics, communication electronics, processing electronics, circuit boards, capacitors, resistors, inductors, transistors, oscillators, At least one of a resonator, a semiconductor chip, a processor, a memory chip, a power supply, a primary battery or a storage battery, and the like.

[0030] First refer to figure 1 , giving a drilling rig comprising electronic components. A downhole electronic tool 10, such as a formation tester, formation fluid identification tool, MWD tool, L...

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PUM

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Abstract

The invention discloses a device and a method for transferring pressure to downhole electronic components by pressure transfer media. The device comprises an outer casing arranged in a downhole fluidhaving hydrostatic pressure. At least one cavity filled with the pressure transfer media is formed in the outer casing, the downhole electronic components are fixed into the pressure transfer media inthe cavities, the outer casing is provided with openings in communication with the cavities, the openings are sealed with elastic shielding members, the outer walls of the elastic shielding members contact with the downhole fluid to receive the hydrostatic pressure of the downhole fluid, and the hydrostatic pressure is transferred to the electronic components through the pressure transfer media.Compared with the prior art, the device and the method have the advantages that the downhole electronic components can work stably in corrosive and vibratory impact environments with high temperatureand high pressure during the oil and gas drilling process.

Description

technical field [0001] The invention relates to the field of protection devices for electronic components of downhole tools, in particular to a device and method for transmitting pressure to downhole electronic components using a pressure transmission medium. Background technique [0002] During drilling and completion of oil and gas wells, ancillary operations may be required, such as evaluating the productivity of the formation in which the well is being drilled. For example, after a well has been drilled and completed, in order to determine whether commercial development of the formation is feasible and how to optimize production, the target zone is often tested to determine various formation properties such as permeability, fluid type, fluid quality, fluid density, formation temperature, formation Pressure, bubble point, formation pressure gradient, mobility, permeability viscosity, spherical mobility, coupled compressibility porosity, surface damage (this is how mud fil...

Claims

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Application Information

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IPC IPC(8): E21B47/017
CPCE21B47/017
Inventor 宋超尚海燕傅钢雷诚
Owner XI'AN PETROLEUM UNIVERSITY
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