Compound measuring device for resistivity and temperature of fluid

A measuring device and resistivity technology, which is applied in boreholes/well components, earthwork drilling, construction, etc., can solve the problems of large volume, complex structure, and low reliability of combined sensors, and achieve high measurement accuracy, small size, The effect of high reliability

Active Publication Date: 2014-07-02
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0005] In order to solve the technical problems of large volume, complex structure and low reliability of combined instrument pup joints or combined sensors existing in the prior art, the present invention provides a simple structure, small size, high temperature and high pressure withstand, and high reliable insulation performance. Composite measuring device for resistivity and temperature

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  • Compound measuring device for resistivity and temperature of fluid
  • Compound measuring device for resistivity and temperature of fluid

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with specific embodiments, and the given examples are only for clarifying the present invention, not for limiting the scope of the present invention.

[0025] The present invention proposes a miniaturized resistivity / temperature compound measuring device for high temperature and high pressure environment, such as figure 1 As shown in the structural diagram, it includes three parts: a high-temperature and high-pressure pressure-bearing body, a composite sensor, and a safety protection plug-in. Put the composite sensor, safety protection insert, upper pressure-bearing end cover, and lower pressure-bearing end cover into the high-temperature and high-pressure pressure-bearing body respectively as shown in the figure to form a complete resistivity / temperature composite measurement device.

[0026] When working, when the fluid flows through the surface of the composite sensor through the fluid hol...

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Abstract

The invention provides a compound measuring device for the resistivity and the temperature of a fluid, which has a simple structure, a small size and a highly reliable insulating property and is capable of bearing high temperature and high pressure. The compound measuring device for the resistivity and the temperature of the fluid comprises a pressure-bearing body, a compound sensor and a safety protection insert, wherein the pressure-bearing body comprises an upper pressure-bearing end cover, a lower pressure-bearing end cover and a pressure-bearing shell; the upper pressure-bearing end cover and the lower pressure-bearing end cover are connected with the pressure-bearing shell; the compound sensor comprises a set of resistivity sensors, a temperature sensor and a compound sensor main body; the temperature sensor is arranged between the set of resistivity sensors; the set of resistivity sensors and the temperature sensor are in pressure hermetic connection with the compound sensor main body; the compound sensor and the safety protection plugin are connected with the pressure-bearing body through mounting holes; and the safety protection insert is connected with the compound sensor.

Description

technical field [0001] The invention relates to a composite measuring device for fluid resistivity and temperature, in particular to a composite measuring device for resistivity and temperature in the high-temperature and high-pressure environment of petroleum well logging. Background technique [0002] The resistivity and temperature sensors used in petroleum logging are two kinds of sensors with different structures, and their working methods are to obtain the required information by sensing when the surface of the sensor is in contact with the fluid. In petroleum engineering well logging, the above two sensors are widely used. Generally, the two sensors are designed as a combined instrument pup joint or combined sensor (generally their length is large and their structure is complex). During the operation, the It is sent downhole, and the sensor senses and measures the resistivity and temperature parameters of the downhole fluid. When logging in combination with conventio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/017E21B47/07E21B49/08
Inventor 刘天耀郭斌陈宝杜瑞芳
Owner BC P INC CHINA NAT PETROLEUM CORP
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