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Measurement while drilling exploring tube sensor signal simulator

A sensor signal, measurement-while-drilling technology, used in surveying, earth-moving drilling, wellbore/well components, etc., can solve the problems of many equipment, complex operation process, low work efficiency, etc., to achieve high precision, stable output signal, Fully measured effect

Inactive Publication Date: 2009-07-01
SHENGLI PETROLEUM ADMINISTRATION BUREAU DRILLING TECH ACAD SINOPEC
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AI Technical Summary

Problems solved by technology

[0002] In the measurement while drilling system, the downhole probe is composed of sensors and circuits. The usual circuit detection method is: use the sensor to provide a signal source for the circuit, and use the computer to detect the circuit. In actual operation, each sensor parameter must be Write the corresponding program, and then connect it to the circuit to be tested. It is also necessary to place the sensor on a calibration stand in a non-magnetic environment for testing. This method requires more equipment, complicated operation process and low work efficiency.

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  • Measurement while drilling exploring tube sensor signal simulator

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Embodiment Construction

[0007] The present invention will be further described now in conjunction with the accompanying drawings of the description.

[0008] figure 1 It is a schematic circuit diagram of an embodiment of the present invention. Since the seven circuits have the same structure, only one of them will be described in detail, and one analog signal circuit includes a signal conditioning circuit and a follower. figure 1 Among them, 1 is the constant voltage module, 2 is the GX signal adjustment circuit, and 3 is the follower. The precision of the constant voltage module 1 is 10.000v±2.5mv, which provides the standard voltage signal for the circuit. The output voltage signal of the GX signal adjustment circuit 2 is connected to the a terminal of the follower 3, and the c terminal of the follower 3 outputs the signal OUTGX, and the output range of the seven signals (DC voltage): -5V~+5V.

[0009] Among the seven analog output signals with the same structure, the signals OUTGX, OUTGY, and OU...

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Abstract

The present invention discloses a exploring tube sensor signal simulator in petroleum well drilling MWD system, which includes a constant voltage module and seven channel identical structure circuit, which are used to simulate seven channel signal of the sensor as OUTGX, OUTGY, OUTGZ, OUTMX, OUTMY, OUTMZ, OUTT, and each channel analog signals circuit includes a signal conditioning circuit and a follower. The present invention is provided with advantages like output signal of the sensor signal simulator stable, accuracy high, no restrict to external conditions like parameter correction, environment and calibration frame when testing the exploring tube circuit, can measure exploring tube circuit conveniently, accurately and fully, and enhance exploring tube circuit test efficiency.

Description

technical field [0001] The invention relates to a sensor signal simulator, in particular to a sensor signal simulator for a measurement-while-drilling probe used in an oil drilling system. Background technique [0002] In the measurement while drilling system, the downhole probe is composed of sensors and circuits. The usual circuit detection method is: use the sensor to provide a signal source for the circuit, and use the computer to detect the circuit. In actual operation, each sensor parameter must be Write the corresponding program, and then connect it to the circuit to be tested. It is also necessary to put the sensor on a calibration frame in a non-magnetic environment for testing. This method requires more equipment, complicated operation process and low work efficiency. Contents of the invention [0003] In the measurement while drilling system, when testing the downhole probe circuit, the sensor is used to provide the signal source for the circuit, and the compute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/12
Inventor 张艳梅秦熹成丁景丽于海霞郭淑会
Owner SHENGLI PETROLEUM ADMINISTRATION BUREAU DRILLING TECH ACAD SINOPEC
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