Yep, some carbon capture tech is even used to extract more oil. They push CO2 down a well to push out more oil, then they get carbon credits for that. Does the carbon stay in the well after it runs dry? Who knows, it’s not the oil company’s problem any more.
From what I know, the co2 is pumped under immense pressure, to the point of solidifying into dry ice. At that depth where this is done once the well is sealed up, it is relatively stable.
Not exactly dry ice, it is supercritically pressured carbon dioxide so it has the density of a liquid but defuses like a gas. CO2 plumes are stable at depths where injection occurs because they are maintained in a pressure and temperature environment where the CO2 stays in a liquid stage, so it will never rise to the surface like a conventional lighter-than-air gas. In-situ mineral carbonation can also occur where the CO2 is injected into silicate rock formations to promote carbonate mineral formation, locking the CO2 for thousands (millions maybe) years.
Yep, some carbon capture tech is even used to extract more oil. They push CO2 down a well to push out more oil, then they get carbon credits for that. Does the carbon stay in the well after it runs dry? Who knows, it’s not the oil company’s problem any more.
From what I know, the co2 is pumped under immense pressure, to the point of solidifying into dry ice. At that depth where this is done once the well is sealed up, it is relatively stable.
Not exactly dry ice, it is supercritically pressured carbon dioxide so it has the density of a liquid but defuses like a gas. CO2 plumes are stable at depths where injection occurs because they are maintained in a pressure and temperature environment where the CO2 stays in a liquid stage, so it will never rise to the surface like a conventional lighter-than-air gas. In-situ mineral carbonation can also occur where the CO2 is injected into silicate rock formations to promote carbonate mineral formation, locking the CO2 for thousands (millions maybe) years.