RU38355U1 - CABLE LUG - Google Patents

Description

CABLE LUG

The invention relates to apparatus and equipment for geophysical research of wells. The purpose of the invention is to increase the cross-country ability of downhole tools on a three-core geophysical cable of standard diameters to ensure well research without lifting submersible pumps and pump and compressor pipes.

The developed tip contains a cap with elements for clamping the wires of the cable armor, a sealing element with washers, a connecting bridge, a housing, and a current-distributing device.

The invention relates to devices used in geophysical research of wells and is intended for electrical and mechanical connection of a geophysical cable with downhole tools.

Cable lugs are known for geophysical cables with a diameter of 36 mm (for three-core) and 26 mm (for single-core) cables, which is three and two times, respectively, exceeds the diameter of the cable. The specified drawback sharply reduces the patency and narrows the scope of downhole tools, makes it meaningless

 V; : U-; Vi O,: ;; - i,: r; -yVrr,: 2;., 7- (r / r - ;. rBr-; V.

Tsaruk B.M.

E2iB47 / 00

the development of next-generation small diameters (in particular, these tips do not allow the device to enter the sub-pumping space through an opening of 0 15 mm) Imperfections in the design of the tips are the details of the device that fixes the load-bearing arm of the armor and the current distribution device, which do not allow to reduce the diameter of the tip. In all well-known tips, an extra-armored armor is used as a load-carrying component. Midwire wires passing through the inner hole of the conical sleeve bend around its outer surface and are fixed on it with a sleeve with an inner cone. As current distribution devices, plug-in connectors with radial distribution of leads or brush collectors are used.

The chain of the invention is to increase the patency of downhole tools and expand the scope of the new generation of devices.

This goal is achieved by the fact that only the internal armor of the cable armor is used as the load-bearing, the armor is fixed using a double-sided conical sleeve directly in the cap of the tip, hermea1 {the core of the cable is carried out by a rubber cylinder, three thrust washers with three holes placed in the tip body, and

using the coaxial arrangement of the terminals in the current distribution device with the distribution of contacts along the length.

In FIG. 1 shows a general view of a cable lug. The tip includes: a current-distributing device consisting of two conductive cylinders 1 and 2, two insulators 3 and 4, a central current lead 5 with a threaded end, with which it is screwed into the insulating sleeve 6; a tip housing 7, into which a rubber sealing element B is inserted, with retaining washers 9 and 10, which allow compressing the rubber when screwing the union nut of the bridge 12 into the housing; a cap 14 with tapered sleeves 15 and 16 for fixing a load-bearing winding armor when the cap is connected to the bridge 13. The union nut of the bridge 12 is held onto the bridge by a sleeve 17 with a left-hand thread, and the current distributor is fixed with a screw 18. A nut 11 with a snap ring is used to connect to the device 19.

The outer core of the cable armor does not open due to the considerable length of the cap and a fairly tight fit.

Sources of information:

1.A.S. USSR No. 274037, MKI E21B47 / 00

2.A.s. USSR No. 377507, MKI E21B47 / 00

3.A.S. USSR No. 546707, MKI E21B47 / 00 + -4.A.S. USSR K 987083, MKI E21B47 / 00 f

5.A.S. SU fo 1023073 A, MKI E21B47 / 00 g

6.A.S. SU W 1520463 A1, MKI G Olv 3/181

7.A.S. SU fo 1668648 Al, MKI E2IB47 / 00

8. Patent RU M 2004790 Cl, MKI E21B47 / 00

9.US Patent fe 3829814, NCI 339-14R

10.US Patent N 3761863, NKI 339-28

11. Cable ends, wireline logging tools and GZ probe heads, technical specifications TU 41-03-730-82, registration number 2302120, Design Bureau of Geophysical Instrumentation, Kiev, 1982.

List of drawings:

1. FIG. 1. General view of the cable lug.

Claims (3)

1. A cable end, comprising a cap and two bushings with tapered surfaces for fixing the load-bearing armor, a sealing element, a connecting bridge, a housing and a current distribution device, characterized in that the sleeve of the fixing device has a two-sided cone. 2. The tip according to claim 1, characterized in that only the inner core of the cable armor is used as the carrier. 3. The tip according to claim 1, characterized in that the current distribution device has a coaxial arrangement of the terminals with their distribution along the length.