DHSV

DHSV is an abbreviation for “Downhole Safety Valve”. DHSVs are considered as one of the important and critical objects during the completion process of a well as these are fail-safe devices that act immediately to prevent an uncontrolled hydrocarbon fluid release that causes an immediate surge in the pressure inside the wellbore and creates a situation of blowout.

DHSVs can move only in one direction i.e. either close or open position. When these valves are closed they completely isolate the reservoir fluids from the surface. These valves are hydraulically operated from the control panel located at the surface. When hydraulic pressure is applied down a control line, the hydraulic pressure forces a sleeve within the valve to slide downwards. Because of this hydraulic pressure, the flapper of the valve is compressed downwards thereby opening the valve. When the hydraulic pressure is released, the spring pushes the sleeve back and causes the flapper to shut.

The downhole safety valves are surface controlled sub surface safety valves abbreviated as (SCSSV or SVSSVs). There are two basic types of SCSSV:

  •          Wireline Retrievable surface controlled sub surface safety valves (WR – SCSSV) and
  •        Tubing Retrievable surface controlled sub surface safety valves (TR – SCSSV)

/From our oil & gas expert From our oil & gas expert

Hermann Egges

"We see ourselves as high pressure doctors and not as sellers."

Herman Egges - Sales director
Contact our expert

Related products Related products

Portable high pressure power pack

Portable high pressure power pack

If you want to be flexible in your locations for testing objects, the RPS power pack is a suitable test system that...
View product »

Wellhead control system

Wellhead control system

If you are looking for a robust wellhead control system with a strong capacity for controlling components of an oil...
View product »

Formation isolation valve charging system

Formation isolation valve charging system

The formation isolation valve (FIV) charging system has especially been desgined by Resato to charge formation...
View product »

Single well control system

Single well control system

With the single well control panel SPP you can control a surface or subsurface safety valve. One of the main assets...
View product »