Wellhead cable sealer ZUG-4 / ZUG-4M

Designed for sealing the wellhead chamber of the cable sluice and cleaning the cable from the borehole medium during well logging at oil and gas wells, as well as during piling operations.

By clicking on the button, you consent to the processing of your personal data in accordance with the privacy policy

01

02

Direct equipment manufacturer

We guarantee the quality of our products

Certified equipment

Development according to drawings

Warranty service

Worldwide delivery

The seal of the Usteva Cable ZUG-4 (Fig. 1) is a hydraulic cylinder, on the housing 1 of which the thread of NCT 73 is cut, for hermetic connection to the mouth.

In building 1 between the average 5 and the extreme 3 cut crackers are two elastic seals 4.

The lower cracker 3 is inserted into the piston 2, and the upper one is locked with a bracket 7 through the split ring 8. Shplint 9 fixes the bracket from the loss.

The piston 2, moves up, compresses the seals, they, deforming, squeeze the cable and ensure its sealing.

The average cracker 5 has a radial channel and a groove that form a drain cavity. In the middle part of the case there is a hole for the removal of a well fluid passing through the lower seal.

In the housing at the piston level there is a conical threaded hole into which a rapidly detachable hydraulic compound (further BRS) is entrusted. The oil station is connected to the BRS through the high -pressure sleeve.

All internal details and seals ZUG-4 are interchangeable, and the inner diameter must correspond to the diameter of the cable used.

The material of the seals should be persistent to the effects of well fluid.

The design of ZUG-4 allows you to replace the seals without dismantling the latter with the mouth. In this case, the well should be blocked, and the pressure in the mouth is stratified.

The inner diameter of the piston ZUG-4 passing for the cable tip of the NKB type-36, which allows the replacement of the device in the mouth without dismantling.

At negative temperatures, after the control of the control pressure, the elasticity of the seals does not ensure the return of the piston and release of the cable. To work at low temperatures, the seal of the Usteva Cable ZUG-4M is completed by the spring node of the return of the piston. The piston 2 is replaced by the elongated. The return spring 18 is dressed on the piston. The nut 1 is wound on the piston and provides preliminary compression of the spring 18. The return node is protected by the casing 17. On the casing the NKT-73 threads are cut to join the mouth and the ZUG case.

Additionally, Ustvoy cable seats can be equipped with an oil control station and high pressure sleeves DY = 6mm. (6 ... 36m).

Figure 1-Ustva Cable ZUG-4

Figure 2-Ustva Cable ZUG-4M

Technical specifications

The ZUG-4 makes it possible to replace seals without having to dismantle the lubricator from the sluice chamber. This is done by closing the well and depressurising the wellhead chamber.

Speciality 1

The inner diameter of the ZUG-4 piston corresponds to the cable lug type NKB-1-36 (NKB-3-36), which makes it possible to change the equipment in the wellhead chamber without dismantling.

Speciality 2

2

1

ZUG-4 is a hydraulically operated sealer of contact type. Elastic elements guarantee sealing of the cable by external D, which is compressed by a piston with the help of a hydraulic drive from an oil station.

Speciality 3

3

Modification of the ZUG-4M sealer is equipped with a spring-loaded piston return unit, which guarantees reliable return of the piston to the initial state.

Speciality 4

4