Anchor and method of using same

Apparatus and method for generating inert gas and heating inject

Apparatus and method for perforating a subterranean formation

Batch method of in situ steam generation

Burn assisted fracturing of underground coal bed

Carbon dioxide injection with in situ combustion process for hea

Coal gasification method

Coal gasification well drilling process

Combination air-blown and oxygen-blown underground coal gasifica

Combined combustion for in-situ retorting of oil shales

Combined surface and in situ tar sand bitumen production

Combustion air injection well

Conditioning a coal seam prior to in-situ gasification

Contacting treated oil shale with carbon dioxide to inhibit leac

Continuous method of in situ steam generation

Controlled retracting gasifying agent injection point process fo

Controlling shale oil pour point

Cyclic flow underground coal gasification process

Decreasing hydrocarbon, hydrogen and carbon monoxide concentrati

Decreasing hydrogen sulfide concentration of a gas