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The well head is at about 5000 ft deep, the actual oil reservoir is at about 18000ft deep.
- The temperature of water on the 5000ft depth is about -30 or -40C
- The temperature of oil coming out from 18000ft depth is rather high- could be 50C or even higher.
Procedure:
- Cut off the riser so that only the entrance to the well remains. There is no danger of ignition of the gas- there is no oxygen.
- Introduce a titanium tube with multihole head (sealed with membranes from inside) into the well not too deep, as close to the well head as possible.
- Start pumping high humidity and high pressure (higher than 200bar, I presume) air through those holes when membranes rupture. Make an air bubble of significant volume which pushes the oil down. Air can be of transient temperature.
- Check the heat transfer field- there should be a rock temperature location under the air volume cold enough to induce condensation and then- freezing of the water vapor in the air. Condensation will occur at vapor pressure but freezing will be under total and the heat transfer is vital. If the temperature of the rock does not go low enough- there will be no freezing.
- Under the freezing temperature on the wall ice will appear and gradually fill the volume until a very small orifice remains. That one can be sealed as well as the air tube can be welded in and the ice cork remains because of the water pressure from above.
