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Simple well temperature correction method and device

A calibration method and calibration device technology, which is applied to measuring devices, detection/exploration using thermal methods, thermometers, etc., can solve the problems of cumbersome and complicated work of well temperature calibration methods and inaccurate calibration results, and reduce workload. The effect of accurate technology and accurate calibration results

Pending Publication Date: 2021-01-01
宿州学院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the well temperature correction method in the prior art has the problems of cumbersome and complicated work and inaccurate correction results

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  • Simple well temperature correction method and device
  • Simple well temperature correction method and device

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Experimental program
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Effect test

Embodiment 1

[0039] According to the final reports and temperature measurement data of various mines in Huaibei, the embodiment of the present invention finally extracts the bottom-hole temperature, well depth Z, geothermal gradient and well The liquid stop circulation time is TSC, the well depth Z span is 500-1400m, and the original temperature is between 22.3-53.2°C. The data was mainly analyzed with the help of IBM spssstatistics 22 software, and the graph analysis was based on origin 9 software.

[0040] First, import the above approximate steady-state basic data into IBM spss statistics 22 software (hereinafter referred to as SPSS software), and in the SPSS software "graphics" drop-down menu, select "chart builder" to construct the correction coefficient f and well fluid stop circulation time ( TSC) and well depth, for example, in this simulation, the correction coefficient f is logarithmically correlated with well fluid stop circulation time TSC and is exponentially correlated with w...

Embodiment 2

[0055] Corresponding to Embodiment 1 of the present invention, Embodiment 2 of the present invention also provides a simple well temperature correction device, which includes:

[0056] The relationship building module is used to use SPSS software to construct the relationship between the correction coefficient and the time to stop the circulation of the well fluid and the well depth based on the least square method;

[0057] The best fitting equation acquisition module is used to obtain several equations based on the nonlinear regression least squares method of SPSS software based on the relationship between the correction coefficient and the well fluid stop circulation time and well depth, and select the correction coefficient from several equations. The best fit equation for well depth,

[0058] f=0.934+0.272ln(TSC)+0.002TSC 2 -0.066TSC+Z -12.773 / 5.138×10 -35

[0059] Tc=Ts+f(Tm-Ts)

[0060] Among them, f is the correction coefficient, Tc is the correction temperature;...

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Abstract

The invention discloses a simple well temperature correction method and device. The method comprises the steps of using SPSS software for constructing the relation between a correction coefficient andwell fluid circulation stopping time and the relation between the correction coefficient and well depth on the basis of the least square method; obtaining a plurality of equations based on an SPSS software nonlinear regression least square method according to the relationship between the correction coefficient and the well fluid circulation stopping time as well as the well depth, selecting an optimal fitting equation of the correction coefficient and the well depth from the equations, and correcting the well temperature by utilizing the optimal fitting equation; the invention has the advantages that the workload of well logging temperature correction is greatly reduced, and the correction result is more accurate.

Description

technical field [0001] The invention relates to the field of coal mine geothermal heat damage, and more particularly relates to a simple well temperature correction method and device. Background technique [0002] In current coal geological exploration, ground drilling is mainly used to measure well temperature to obtain ground temperature data. The common method is continuous temperature measurement of drilling well fluid system, that is, well temperature logging. Well temperature logging mainly adopts two methods: simple temperature measurement and approximate steady-state temperature measurement. Although the ground temperature data obtained by approximate steady-state temperature measurement is closer to the actual temperature of rock in the hole, the process of approximate steady-state temperature measurement is complicated and the test time is long 1. The test cost is high. Therefore, in the actual drilling temperature measurement process, simple temperature measuremen...

Claims

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Application Information

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IPC IPC(8): G06F17/11G06F17/18G01V9/00G01K13/00
CPCG06F17/11G06F17/18G01V9/005G01K13/00
Inventor 郭艳桂和荣汪玉泉庞迎春胡荣杰赵成洲江波陈贵祥王春雷
Owner 宿州学院