SU507843A1 - Portable electrical logging tool - Google Patents

Description

(54) PORTABLE ELECTRIC CARRING BOARD

one

The invention relates to well logging.

A device is known comprising a voltage converter, a rectifier, a smoothing filter, current control devices, a set of control shunts, a polarization compensator, a pulsator with current and 1 measuring switch, current and I measuring electrodes, a recorder and I smoothing filter signal. I To ensure efficiency and improved performance, the pulsator is made on electromechanical relays controlled by a multivibrator. In addition to toro, a spark arresting device and an I industrial interference filter were introduced into the installation. I As a logger, an automatic logging logger H-360 with visible chart recording is used. I FIG. 1 is a block diagram of the portable. | electrical logging console; in fig. 2: electrical circuit.

: The proposed device has 13 functional blocks: converter 1 for voltage, rectifier 2, smoothing

filter 3, devices 4 for adjusting current strength, pulsator current switch 5, sparking device 6, set of control shunts 7, industrial noise filter 8, polarization compensator 9, pulsator measuring switch 10, pulsator control circuit 11, smoothing out

13

Signal filter 12 and H-360 type recorder.

The handheld remote is powered by a 12 volt battery.

Battery voltage is increased by transistor M converter 1 to 9O-12O in to produce significant currents fr

5 circuit supplying electrodes.

The voltage converter is made according to the two-stroke blocking-generator scheme using two transistors. The voltage across the converter passes through terminal 2, assembled along the bridge, on four semiconductor diodes, and cr; PC filter type 3.

The supply current is regulated by an alternating load resistor 5

3

milliammeter and voltmeter (see Fig 2, block 4),

To supply the AB constant electrodes, the current can be converted into a pulsating current using a pulsator current converter 5.

Behind the current switch, there is a spark device, device 6,

Current electrodes are connected to KneKiМАМ, measuring - to terminals

The variable potential difference through the industrial noise filter and the compensator 0 is fed to the measuring switch 10 of the pulsator.

The imperative switch performs synchronous signal rectification.

Both current and measuring switches are assembled on electromagnetic relays.

The pulsator has an autonomous circuit of level 11, which is made in the form of symmetric multivibrators on two transistors. The control windings of the relays are directly connected to the collector.

. four:

transistor circuits; The switching frequency of the multivibrator is 1 Hz.

After the termination of the signal, the signal passes through the smoothing filter 12 and enters g to the automatic recorder 13 for registration in the form of a biogram.

If necessary, the AB circuit can be powered by direct current, while the pulsator control circuit does not turn on the h; . (

Claims (1)

  Invention Formula Portable electrical logging tool containing a voltage converter, a driver, a smoothing filter, 15 current control devices, a set of control shunts, a polarization compensator, a current and measuring switch pulsator, a recorder and a smoothing; 20 different signal filter By the fact that, in order to economically: improve the performance of the device, the pulsator is made on electromechanical relays controlled by a multivibrator. oo K 0 I f 3 Ab6b Afd6n ./