4” Surface-Controlled Subsurface Safety Valve

SCSSSV

Also known as:

WRSCSSSV, WRSCSSV, Wireline Retrievable Safety Valve

4” Surface-Controlled Subsurface Safety Valve

SCSSSV

Also known as:

WRSCSSSV, WRSCSSV, Wireline Retrievable Safety Valve

Buy

Made to Order

Manufacturer

Price:

 Request for Quote

Shipping:

Air freight

Delivery Time:

4 - 6 Weeks

Note:

The 4” SCSSSV provides reliable emergency shut-in for wells with 4-inch tubing, handling moderate to high flow rates with wireline retrievability for easy maintenance.

Executive Summary

A Surface-Controlled Subsurface Safety Valve (SCSSV) is a vital safety device installed in the production tubing of oil and gas wells. Its primary function is to automatically shut off the flow of fluids from the well in case of an emergency—such as equipment failure or loss of surface control pressure—to prevent uncontrolled release of hydrocarbons.

The flapper is the core component inside the valve that physically blocks the flow path when triggered. It acts like a hinged gate: in normal operation, the flapper stays open to allow production fluids to flow freely. If an emergency occurs, hydraulic pressure from the surface is lost, causing the flapper to close, sealing the wellbore and isolating the well from the surface.

The 4-inch size SCSSV is commonly used in wells with 4-inch production tubing. This size balances the need for sufficient flow capacity while providing reliable shut-in capability. It is suitable for wells with moderate to high production rates and is compatible with standard well configurations.

Technical Specifications

Tubing Size 4" (101.60mm)
Landing Nipple Seal Bore 3.313”
Working Pressure 5000 PSI
Valve ID 1.75”
Valve Type Flapper Type
Control Type Surface Controlled
Retrievability Wireline Retrievable
Installation Location Upper Wellbore
Material Flapper made from solid bar stock
Equalizing Self Equalizing

Features and Benefits

  • Self-equalizing mechanism to reduce differential pressure during valve opening.
  • Supports higher flow rates with minimal pressure drop for efficient production.
  • Reduces mechanical wear and erosion due to self-equalizing design.
  • Flapper-type valve constructed from solid bar stock.
  • Offers flexibility to balance flow capacity and safety with multiple valve bore options.

Download Attachments for free

Print or Share

Do you need information for the team or a client? Download these page to add your dossier.

Email Page

Send an email with the link to this page. It's a great way to share information.

Detailed Description

Available sizes: 2 3/8”, 2 7/8”, 3 1/2”, 4”, 4 1/2”, 5”, 5 1/2'” and 7”.

The 4-inch Surface-Controlled Subsurface Safety Valve (SCSSV) is designed for installation in wells with 4-inch production tubing and serves as a critical safety device to shut in the well during uncontrolled flow events caused by equipment failure or loss of surface hydraulic control pressure. The valve operates via a hydraulically actuated flapper mechanism that remains open under normal operating pressure but closes automatically if the hydraulic signal is lost. This fail-safe design isolates the wellbore, preventing unintended release of hydrocarbons and protecting both personnel and the environment.

The flapper mechanism is simple and robust, minimizing moving parts in the flow path and reducing potential points of failure. When open, the sealing surfaces are positioned out of the fluid flow path, which helps maintain smooth production flow and reduces wear on sealing components. The valve’s hydraulic actuation allows reliable operation under varying pressure and flow conditions commonly encountered in oil and gas wells.

The valve is wireline retrievable, which means it can be removed, serviced, or replaced using wireline tools without the need to pull the entire tubing string from the well. This capability significantly reduces well intervention time and associated costs while allowing maintenance or upgrades to be performed efficiently.

This SCSSV fits standard landing nipples with a seal bore of 3.313 inches and is rated for working pressures up to 5,000 psi. Its internal valve diameter is 1.75 inches, providing an appropriate balance between flow capacity and structural integrity for wells with moderate to high flow rates. The 4-inch tubing size is common in many oil and gas production wells, making this valve size versatile across different field conditions.

This size is commonly applied in production wells where 4-inch tubing is standard, supporting reliable well control and efficient maintenance. Its hydraulic surface control and simple flapper design contribute to dependable operation under varying well conditions.

Engineering Data