Patent ID: 8025108

Claim:
A subterranean method of processing a hydrocarbon fluid-containing deposit, comprising: from a subterranean room, providing a borehole into a deposit containing formation fluid comprising fluid hydrocarbon, the borehole having a first end at a wall of the subterranean room, the borehole having a second end remote from the subterranean room and received within the deposit, the first end being elevationally lower than the second end; providing a string of pipe within the borehole from the subterranean room; injecting a cuttings removal fluid from the string of pipe into the borehole and against a wall of the borehole in underbalanced pressure conditions; conducting one of drilling, reaming, or jetting within the borehole during said injecting of the cuttings removal fluid; flowing formation fluid comprising fluid hydrocarbon from the deposit into the borehole during said injecting of the cuttings removal fluid; and flowing the injected cuttings removal fluid and the formation fluid within the borehole at least in part by gravity downhole externally of the string of pipe in underbalanced pressure conditions within the borehole and into the subterranean room.