Equalizing Subs for Slickline-Retrievable SSVs | SLB
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Equalizing Subs

General-service equalizing subs for slickline retrieval applications

blue steel texture
Rated to 5,000 psi [34.5 MPa]
Rated to 300 degF [149 degC]

Equalize pressure in subsurface controls for safe slickline retrieval

A-1, B-1, and C-1 equalizing subs equalize differential pressures across slickline-retrievable subsurface controls before retrieving the controls from the tubing string. These subs all feature compact construction and simple design, differentiated by the size of the internal bore. All are designed for sweet to moderately corrosive environments.

These equalizing subs have a spring-loaded dart that protrudes into the bore of the sub. When a prong attached to the pulling tool is run into the sub, the dart is pushed off its seat. This permits pressures to equalize across the assembly before unsetting the lock.

Equalizing Sub

Recovery

Slickline-retrievable, surface-controlled safety valve

Facilitate deployment and retrieval as an economical secondary or primary safety valve.

WRDP-1

Slickline-retrievable subsurface safety valves

Manage risks in general-service wells with working pressures up to 10,000 psi [69 MPa].

WRDP-2

Slickline-retrievable subsurface safety valves

Manage risks in wells with working pressures up to 7,500 psi [52 MPa].

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Product Sheet Equalizing Subs

General-service equalizing subs with working pressures to 5,000 psi.

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