SU802894A1 - Device for marking and testing cables of well measuring probes - Google Patents

Description

new Along the same guiding groove 5, the axis of the driven gear 7 is also moved. On the stand b there is a block 8 with a cable 9 passed through it, one end of which is connected to the axis 4 of the leading drum, and the other is wound on the receiving sleeve 10 of the driven gear 7.

Reels 2 and 3 are wound several times, for example four turns of cable 11 ,. which, i) the blue roller 12 is tightly pressed against the markers 13 of the marking drum 14. The markers 13 rotate and capture a layer of paint placed in the container 15 on their surface. On the base 1, a measuring element 16 is installed, made for example in the form of a linear scale segment and equipped with a comparator if necessary. At the upper end of the measuring element along its length there is a groove for the cable 11.

The device works as follows.

Before starting the marking, four turns of cable 11 are wound onto the outer surface of slave drum 2. The end of the cable is passed between the roller 12 with a marking drum 14, after which the end of the lead drum 3 or four turns of cable 1 is wound onto the outer surface of the leading drum.

For applying 11 dead divisions to the cable, the driving drum 3 is set in motion {FIG. 2). As a result, the cable is unwound from the slave drum 2 and wound on the driving drum 3, the cable between the roller 12 and the marking reel M4 14 and rotating the latter. On the outside of the cable 11, the marker 13 is labeled with a pitch equal to the distance between the teeth on the marking drum 14 ". When the cable 11 is wound on the driving drum 3, the cable 9 is wound on the receiving sleeve 10 reinforced on the shaft with a wire. gear 7 driven in rotation through driving gear 4 by the driving drum 3. In this case, the cable 11 is tensioned equal to the tension at the equivalent depth of its immersion into the well, taking into account the weight of the measuring probe, ensuring the required equality between the movement of the axis of the leading drum 3 in the guide slot 5 and the depth of the cable 11 into the Borehole is carried out by changing the gear ratio at a constant base ratio; standing between the axis of the driven gear 7 and the axis of the pinion gear 4.

After testing the marked cable, the marking drum 14 is retracted from the roller 12 and to the last. The measuring element 16 is CONDUCTED. Then the cable 11 is wound on the driven drum 12 and its end is passed between the roller 12 and the measuring element and fixed or wound on driving drum 3. The latter is rotated by the drive 17 (FIG. 2), the cable 11 is moved relative to the dimensional

5 of the element 16 and the marking marks on the cable are compared with the marking marks on the measuring element. According to the results of the comparison, the presence of irreversible cable stretching is determined. 11

0 and, if necessary, adjustments are made for the immersion depth of the probe.

When the leading drum 3 is rotated, the cable 9 is simultaneously wound onto the receiving sleeve 10. This

j-provides tension on cable 11, equal to tension at an equivalent depth of its immersion in the well.

Predlag «ee device improves the accuracy and reliability of measurements.

invention formula

A device for marking and calibration of downhole measuring probes (, containing) X-base, on which strengthening stand and cable and cable drums, cable tensioning device, measures {t & dl e aient to the cable marker, which distinguishes This is due to the fact that, in order to ensure accuracy of the marking, the cable tensioning device is designed as a drive pinion mounted on the axle of the driving drum, which engages with the driven gear, the receiving sleeve of which is connected by a cable the block with the axis of the leading drum, and in the stand are made longitudinal grooves for moving the axes of the leading

.go drum.and driven gear.

Sources of information taken into account in the examination

1. USSR author's certificate No. 128621, cl. G 01 C 15/05, 1958.

2. Measuring equipment, 1978, 5, p. 19-20 (prototype).

Claims (1)

Claim A device for marking and checking cables of downhole measuring probes, comprising a base on which a stand and a driven and driving reel for cable are mounted, a cable tensioner, a measuring element and a device for marking the cable, which means that , in order to improve the accuracy of the marking, the cable tensioning device is made in the form of a drive gear mounted on the axis of the driving drum, which engages with the driven gear, the receiving sleeve of which is connected by a cable through a fastener the block on the stand with the axis of the driving drum, and in the stand there are longitudinal grooves for moving the axes of the driving drum and the driven gear.