Calibration device for array lateral log instrument

Abstract

The invention discloses a calibration device for an array lateral log instrument. The calibration device includes an electrode tank and a calibration box, wherein the electrode tank includes an upper electrode stand and a lower electrode stand which can be locked to be a whole, and a plurality of electrode clamps for clamping the array lateral log instrument are arranged on the inner side surface of the upper and lower electrode stands; after the upper and lower electrode stand are installed on the array lateral log instrument, the electrode clamps can correspond to electrode on the array lateral log instrument. The calibration box can generate multiple sets of different resistance modes among the electrode clamps, and switching can be performed among the multiple sets of different resistance modes. The calibration device for the array lateral log instrument overcomes the limitation that the existing calibration device is large in size, heavy in weight and should perform calibration in field logging, and can perform calibration accurately in a lab; and the calibration device for the array lateral log instrument is compact in structure, convenient to carry and use, and multiple sets of different resistance modes can be generated in the calibration box, so that multiple sets of calibration curves can be generated, and thereby the calibration accuracy is effectively improved.

Description

technical field [0001] The invention relates to the field of petroleum exploration, in particular to an array lateral logging instrument calibration device. Background technique [0002] The array laterolog tool is a new logging method developed after the dual laterolog tool, and the HAL array laterolog tool is a new type of arrayed laterolog tool with multiple detection depths. Design and development for the evaluation of complex oil and gas reservoirs. It is mainly used to quantitatively describe the characteristics of thin layers and formation invasion, measure formation resistivity, invert formation invasion parameters and true resistivity, and obtain formation oil saturation. This method realizes the measurement of six different detection depths by increasing the number of shielding electrodes, which can detect the change of resistivity from the mud invasion to the deep formation, and clearly describe the invasion characteristics. Among them, the RAL0 curve can invert...

AI Technical Summary

Problems solved by technology

[0005] The array laterolog tool is of great significance in petroleum exploration and development, but the calibration of this kind of tool is complicated and cumbersome, and the tool has higher requirements on the accuracy of the calibration system

The instrument itself is bulky and heavy, and calibration at the logging site is costly; however, there is no relevant calibration system for sale in the domestic market

Images