Supporting the Energy Transition

Large-scale heat and power production plants use large diameter geothermal wells to produce large fluid volumes, often from the open hole or through a slotted liner, rather than tubing. Most low temperature geothermal reservoirs will not produce without pumping so line shaft or electric submersible pumps (ESPs) are installed to increase the flow rate or to pressurise the fluid to avoid gas release.

Brine quality varies greatly in geothermal production and can be highly corrosive with high levels of dissolved solids in high-temperature systems. Maintaining the produced water under pressure, especially where there is high carbon dioxide content, can reduce corrosion and scaling.

Corrosion can be so severe that more advanced downhole materials are required and even titanium casing becomes economic. Scaling can lead to frequent workovers to replace pumps and other downhole equipment and to remove the scale using jetting or milling. The requirement for a cement sheath to surface means that if circulation zones become unproductive, they must usually be plugged before cementing using seals that can withstand high pressure and temperature cycling.

Our high temperature valve that can operate at 340 degrees C, incorporates features to prolong control fluid life and full metal-to-metal seals. We also have a range of plugging, jetting and clean-out tools plus downhole safety valves which can be retrofitted with cable deployed ESPs.

We are committed to supporting this transition and our technology range has many suitable products already tried and tested in high pressure, high temperature and corrosive environments that can be applied to new sectors. If we don’t have the exact specification you need, then we are confident that we can develop something to suit, so please get in touch with our team to discuss your requirements.