When the reservoir pressure is insufficient, we proceed to the injection of fluid (s) to force oil to rise. These fluids may be gas (one of the deposit, or liquefied petroleum gas), or water.
Techniques more advanced (and more energy-intensive), such as thermal methods or fluid drive missible, allow to exploit the deposits difficult.
The thermal method involves heating the oil to the fluid (that is to say, reduce its viscosity). The heat comes from the injection of steam or underground combustion.
The fluid drive missible is performed using carbon dioxide or liquefied petroleum gas, lighter. Finally, chemical methods attempt to limit the capillary that holds the oil in the rocks. This is done using polymers or micro-emulsions of oil, water, alcohols and surfactants.
No comments:
Post a Comment