| 摘要 |
<p>RECOVERY OF BITUMENS BY IMBIBITION FLOODING (D#73,004- F) A method for recovering bitumen from tar sand deposits by imbibition flooding at ambient temperature wherein the bitumen is sequentially contacted with a paraffin liquid hydrocarbon followed by a soak period to allow imbibition of the solvent, after which the bitumen and solvent mixture is produced, and the cycle is repeated. -I-</p> |
