Well temperature logging tool

A technology of temperature logging instrument and well temperature, which is applied in construction and other directions, can solve the problems of inability to deploy well temperature logging well, complex structure, etc., and achieves the effects of simple structure, strong portability and wide application range.

Pending Publication Date: 2020-11-24
北京中地英捷物探仪器研究所有限公司
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Problems solved by technology

[0002] Well temperature logging, also known as thermal logging, is a logging method used to study geological structures, rock formation properties, find useful minerals, and check drilling technical conditions based on the law of temperature changes in boreholes with depth. Logging tools and pressure logging tools are complex in structure, and are easily limited by the wellhead of the well to be logged, so they cannot carry out the operation of well temperature logging well

Method used

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Embodiment Construction

[0025] Such as figure 1 As shown, a well temperature logging instrument according to an embodiment of the present invention includes a control chip, two temperature sensors and a strip-shaped probe tube 1, the two temperature sensors are connected to the control chip, and the two temperature sensors are connected to the control chip. The temperature sensors are sequentially arranged inside the probe tube 1 along the extension direction of the probe tube 1, and the control chip obtains the differential well temperature according to the signals respectively collected by the two temperature sensors.

[0026] Put the probe 1 into the well to be measured, and according to the signals collected by the two temperature sensors installed inside the probe 1, the differential well temperature at different depths in the well to be measured can be obtained conveniently and accurately. It can be understood that What is more, it is also possible to obtain the variation trend of the different...

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Abstract

The invention relates to a well temperature logging tool. The logging tool comprises a control chip, two temperature sensors and a strip-shaped probe tube, wherein the two temperature sensors are bothconnected with the control chip, and the two temperature sensors are arranged inside the probe tube in sequence in the extension direction of the probe tube. According to signals collected by the twotemperature sensors respectively, differential well temperatures are obtained, the probe tube is extended into a well to be logged, and according to the signals collected by the two temperature sensors arranged inside the probe tube, the differential well temperatures at different depths in the well to be logged can be conveniently and accurately obtained. It is understandable that a change trendof the differential well temperatures at different depths in the well to be logged can also be obtained by changing the extension lengths of the probe tube into the well to be logged. The well temperature logging tool is simple in structure, and cannot be restricted by the mouth of the well to be logged, the range of application is wide, and the portability is strong.

Description

technical field [0001] The invention relates to the technical field of well temperature logging, in particular to a well temperature logging instrument capable of measuring differential well temperature. Background technique [0002] Well temperature logging, also known as thermal logging, is a logging method used to study geological structures, rock formation properties, find useful minerals, and check drilling technical conditions based on the law of temperature changes in boreholes with depth. Well logging tools and pressure logging tools are complex in structure, and are easily limited by the wellhead of the well to be logged, so they cannot perform well temperature logging operations well. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a well temperature logging tool capable of measuring differential well temperature in view of the deficiencies of the prior art. [0004] The technical scheme of a kind of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/07E21B47/017
Inventor 曹志福原波魏秋园彭伟斌
Owner 北京中地英捷物探仪器研究所有限公司
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