Device for performing temperature correction and deep formation environment simulation on induction logging instrument

Abstract

The invention discloses a device for performing temperature correction and deep formation environment simulation on an induction logging instrument. The device comprises a box body, an air duct, a circulating fan, an electric heater, a temperature controller, a deep formation environment simulation system, a data acquisition system, and a control unit; the box body is used for accommodating the induction logging instrument and the deep formation environment simulation system; the air duct is used for filling the box body with heated air; the circulating fan is used for introducing the heated air into the air duct; the electric heater is used for heating the air; the temperature controller is used for controlling the power of the electric heater; the deep formation environment simulation system is used for simulating lithology and fluid conditions in different formation environments; the data acquisition system is used for acquiring, storing, processing and displaying signals in real time; and the control unit is used for controlling the operation of the entire device. With the device for performing temperature correction and deep formation environment simulation on the induction logging instrument provided by the embodiments of the invention adopted, the complex environment of deep formations can be accurately simulated, and measurement precision can be increased.

Description

technical field [0001] The invention relates to the field of well logging equipment, in particular to a device for temperature correction and deep formation environment simulation for induction logging instruments. Background technique [0002] The induction logging instrument is an instrument for testing oil and gas layers in oil wells based on the mutual induction principle of alternating current. Specifically, the transmitting coil antenna and the receiving coil antenna of the induction logging instrument are both in the well, and the alternating current in the transmitting coil antenna changes. Magnetic field, the changing magnetic field induces eddy current in the formation around the well, and induces electromotive force in the receiving coil. The magnitude of the induced electromotive force is related to the eddy current, that is, to the conductivity of the formation; the greater the conductivity of the formation, the greater the eddy current. The greater the electrom...

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Problems solved by technology

[0005] Furthermore, the conductivity of formations with different properties, such as clastic rocks, carbonate rocks, and volcanic rocks, in deep high-temperature environments is significantly different from that in shallow environments, and the conductivity caused by the fluid properties in deep formations is superimposed. Therefore, the normal-temperature shallow formation environment cannot directly replace the deep high-temperature formation environment, and the traditional laboratory simulation method has insufficient understanding of the impact of this difference on the experimental results, and shallow formations are used in the formation environment simulation.

At the same time, due to the complex lithology of the deep underground environment, there are significant differences between the testing instruments commonly used in the laboratory and the actual deep high-temperature environment and complex lithology environment, resulting in obvious measurement errors in the measurement results of induction logging tools

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