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Secondary heat exchange non-inductive hot air circulation oven

A technology of hot air circulation oven and secondary heat exchange, applied in the direction of construction, can solve the problem of no such oven, etc., and achieve the effects of preventing overheating, preventing overheating, and having a simple and effective thermal insulation structure

Inactive Publication Date: 2018-09-21
CNPC GREATWALL DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] There is currently no such oven that meets the above requirements

Method used

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  • Secondary heat exchange non-inductive hot air circulation oven
  • Secondary heat exchange non-inductive hot air circulation oven
  • Secondary heat exchange non-inductive hot air circulation oven

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Embodiment Construction

[0060] The present invention will be further described in detail in an exemplary manner below in conjunction with the accompanying drawings and specific embodiments.

[0061] Such as figure 1 As shown, the induction logging instrument is generally composed of an electronic circuit sub-section 11, a pre-amplification sub-section 12 and a probe sub-section 13. These nipples are then connected upwards to other nipples in the logging tool string, and finally to the malic and logging cables to the surface acquisition system. The electronic circuit subsection 11 and the preamplification subsection 12 are equipped with the power supply, transmission and acquisition circuits and communication circuits of the logging instrument. Sensors of logging tools are installed in the probe sub-section 13 . The electronic circuit short section 11 and the preamplifier short section 12 are made of metal materials, bearing the external environmental pressure of 140Mpa; while the shell of the probe...

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Abstract

The invention relates to a secondary heat exchange non-inductive hot air circulating oven for logging instrument temperature correction. The secondary heat exchange non-inductive hot air circulating oven comprises an electric heating heat exchanger (301), an electric heating heat exchange pipeline (302), an electric heating heat exchanger fan (303), a circulating fan (308), an oven air outlet pipeline (309), an oven body (310) and an oven air inlet pipeline (312). The oven provides a controllable temperature testing environment within a certain temperature range for a tested induction instrument and does not influence the temperature correction process. The temperature control of the oven can meet a certain precision and uniformity requirements, and accordingly the integral temperature testing requirements of the induction instrument are met.

Description

technical field [0001] The invention relates to a hot air oven, in particular to a secondary heat exchange non-sensitive hot air circulation oven used for temperature correction of an induction logging instrument. Background technique [0002] The induction logging tool uses the principle of mutual inductance of alternating current, and uses the alternating current in the transmitting coil antenna to induce electromotive force in the receiving coil. Since both the transmitting coil antenna and the receiving coil antenna are in the well, the alternating current of the transmitting coil antenna must be in the formation around the wellbore. The eddy current is induced in the medium, and the eddy current affects the induced electromotive force of the receiving coil antenna, so the electromotive force is related to the strength of the eddy current, that is, to the conductivity of the formation. [0003] Array induction logging tools are developed on the basis of ordinary inductio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/017
Inventor 谢昱北肖加奇梁小兵黄涛
Owner CNPC GREATWALL DRILLING ENG