Thermal barrier for downhole flasked electronics

A technology for downhole tools and components, which is applied in the field of heat-sensitive components, and can solve problems such as failure and inaccurate work of heat-sensitive electronic components

Pending Publication Date: 2020-11-27
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Elevated temperatures in the borehole ("downhole heat") can cause heat-sensitive electronic components to operate inaccurately or even fail

Method used

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  • Thermal barrier for downhole flasked electronics
  • Thermal barrier for downhole flasked electronics
  • Thermal barrier for downhole flasked electronics

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Embodiment Construction

[0017] Aspects of the present disclosure relate to thermally isolating thermally sensitive components of a downhole tool from a high temperature environment. The present disclosure relates to apparatus and methods for isolating thermally sensitive components from the wellbore environment and / or heat generated by downhole components. In particular, aspects of the present disclosure relate to flask-type insulation systems. Aspects include devices for research boreholes or other use in boreholes intersecting formations.

[0018] Aspects of the present disclosure provide novel ways to thermally isolate electronics inside a downhole drilling or logging tool. Embodiments disclosed herein may include an assembly associated with a downhole tool and configured to thermally isolate heat sensitive components. The assembly may include: a thermal housing; a base within the thermal housing; at least one thermally sensitive component mounted on the base; and an insulating support connectin...

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Abstract

Apparatus including an assembly associated with a downhole tool and configured to thermally isolate a thermally sensitive component. Components of the assembly include a thermal housing; a chassis interior to the thermal housing; at least one thermally sensitive component mounted on the chassis; and a thermal isolation support connecting the chassis to the tool. The thermal isolation support comprises an elongated thermal isolator having a first end and a second end opposite the first end, the thermal isolator connected to the tool at the first end and connected to the chassis at the second end, and a heat sink thermally coupled to the elongated thermal isolator at the second end. The second end of the elongated thermal isolator may comprise the only points of thermal coupling between theheat sink and the components other than the heat sink.

Description

technical field [0001] In one aspect, the present disclosure generally relates to thermally isolating a heat sensitive component used in downhole applications of a borehole in a subterranean formation. Background technique [0002] Drilling wells for various purposes is well known. Such wells may be drilled for geothermal purposes, to produce hydrocarbons (eg, oil and gas), to produce water, and the like. Well depths can range from thousands of feet to 25,000 feet or deeper. Downhole tools used during and after drilling typically incorporate various sensors, instrumentation, and control equipment in order to perform any number of downhole operations. Accordingly, the tool may include sensors and / or electronics for formation evaluation, fluid analysis, monitoring and control of the tool itself, and the like. [0003] The borehole temperature can vary from ambient up to about 500°F (260°C), and the pressure from atmospheric up to about 30,000 psi (206.8 megapascals). Tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/017
CPCE21B47/0175E21B36/001
Inventor 赛义德·拉菲理查德·E·贝利
Owner BAKER HUGHES INC
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