WIV - Welltec® Isolation Valve

For multiple zones completions

WIV (Welltec Isolation Valve) hero

The Welltec Isolation Valve (WIV) design, when incorporated to lower completions or liners, enables circulation & wash down or annulus fluid displacement during deployment and provides bi-directional sealing for permanent lower completion or liner isolation upon closure.

To close the WIV, a ball is dropped from surface and circulated down, generating a differential pressure to shift the sleeve and create a permanent bi-directional seal, such that WAB / WLP can be hydraulically expanded. The sleeve is locked in the closed position and can be milled out if required.

Case Highlights

General information

Product name: WIV (Welltec Isolation Valve).
Product structure: ball-drop activated, bi-directional seal

Base casing: compatibility with all standard casing material / weight / threads
Metallurgy: 4140 / S13 Cr / 25 Cr / Inc 718 / 925
Primary seal type: o-ring
Standard elastomers & seals: HNBR (160°C) / Aflas (200°C) / FFKM (260°C)

Challenges

Datasheet

WIV (Welltec Isolation Valve) Hori
Applications
Liner Installation that incorporate WAB / WLP or alternate hydraulically actuated technology
Multi-zone one open hole completions
Inner string valve for cased and open hole applications
Forming the upper and lower seal assemblies for casings, liners or liners
Features
High differential pressure rating with bi-directional sealing
Low diametrical profile, minimal running OD
Provides safe and cost-effective sealing
Corrosion resistant alloy are available for hostile environments
No impact on casing tensile, torque specifications
High circulation rate option while RIH
Heavy-duty design
Benefits
Allows for fluid circulation and high rate wash down / displacement during deployment of lower completion / liner
Fully balanced, permanent, bi – directional sealing mechanism
Specifications
Base pipe size 4 1/2"
Max. burst pressure 10,000 psi
Max. collapse pressure 10,000 psi
Shear pin arrangement Up to 4 pins
Max. OD 5"
Min. ID 1.98"
Flow area 1.49 sq. in
Ball OD 1.50"
ISO14310 Standard V3
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