Pragma has been given the green light by Pharis Energy and OGTC to progress with the manufacture and prototype testing of their Downhole Steam Injection Valve (DSIV) following a successful feasibility study.
Using advanced materials, detailed fluid design and innovative engineering features to maximise reliability for extreme downhole conditions, the surface controlled DSIV will be the first steam injection valve available on the market to meet UK safety regulations. The valve will be rated to withstand the extreme downhole conditions required for continuous high-pressure steam injection and will operate at temperatures of up to 343 degrees Celsius.
Owing to Pragma’s surface controlled design, the DSIV technology will also be able to be used in other extreme high temperature developments around the world. These could include production or geothermal wells, providing the DSIV with considerable applications and advantages for a wider market. The production safety valve variant the Extreme Temperature Safety Valve also incorporates ESP cable bypass capability which will allow the installation of downhole pumps.
The DSIV is a key enabling technology for the implementation of offshore steam-flood, and Pharis will use the DSIV valves to protect well integrity, as the company progresses a steam assisted, phased development of the Pilot field, which lies in UKCS block 21/27a. This project will start with a steam-flood trial injecting up to 36,000 bcwe/day of steam into the southern part of the Pilot field. The full scale steam-flood is aiming for approximately 50% recovery (over 120 mmbbls).
