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Formation tester ground control system

A formation tester, ground control technology, applied in the direction of measurement, wellbore/well components, earthwork drilling and production, etc., can solve the problems of large size, backward technology, and bulky ground system, achieve advanced electrical design, reduce system cost, The effect of improved compatibility

Active Publication Date: 2013-10-02
CHINA NAT OFFSHORE OIL CORP +1
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AI Technical Summary

Problems solved by technology

[0004] 1) The electrical interface of the existing ground control system must use 110v / 60Hz power supply, and the power supply system and signal interface provided by different logging instruments are different, so it cannot be applied in 220V / 50Hz and other environments;
[0005] 2) The advanced processing of the existing ground control system can only process 4-wire signals without tension detection;
[0006] 3) The existing ground control system communicates with the computer through dual serial ports, and the technology is backward;
[0007] 4) The existing ground system is bulky, heavy and inconvenient for transportation and installation

Method used

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Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0038] The ground control system of the stratum tester in the embodiment of the present invention is a portable ground control system composed of a set of ground panels and supporting control software, which is used to control the stratum tester BASIC RCT, realize stratum pressure measurement and sampling, and simultaneously analyze the pressure measurement data to explain.

[0039] Such as figure 1 As shown, the ground control system mainly includes four parts: a high-voltage AC power supply, a high-voltage DC power supply, a control panel, and a computer installed with dat...

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Abstract

The invention discloses a formation tester ground control system. The system is connected with an underground instrument through a logging cable and comprises a control panel used for carrying out underground instrument data collection and cable depth and tension signal collection, a high-voltage direct-current power supply used for achieving direct-current power supply for the underground instrument, a high-voltage alternating-current power supply used for achieving alternating current power supply for the underground instrument, and a signal processing module used for carrying out postprocessing on the underground instrument data and the cable depth and tension signals collected by the control panel. By means of the formation tester ground control system, the interface compatibility performance of the ground system can be improved, and the portable performance can also be improved.

Description

technical field [0001] The invention relates to the field of wireline logging technology, in particular to a ground control system for a formation tester. Background technique [0002] The ground control system of the formation tester can provide high-power AC power supply and DC power supply for the formation tester, and realize the cable communication and depth acquisition functions of the instrument. [0003] However, the ground control system of the formation tester in the prior art mainly has the following defects or deficiencies: [0004] 1) The electrical interface of the existing ground control system must use 110v / 60Hz power supply, and the power supply system and signal interface provided by different logging instruments are different, so it cannot be applied in 220V / 50Hz and other environments; [0005] 2) The advanced processing of the existing ground control system can only process 4-wire signals without tension detection; [0006] 3) The existing ground contr...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B47/12E21B47/04
Inventor 刘畅李敏褚晓冬李小邦
Owner CHINA NAT OFFSHORE OIL CORP
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