Wells – Processes – Electric current or electrical wave energy through earth for...
Patent
1987-05-27
1989-04-04
Suchfield, George A.
Wells
Processes
Electric current or electrical wave energy through earth for...
166 60, 166 651, 166 66, 166250, 166267, 166302, 73151, 324347, E21B 4324, E21B 4334, E21B 4900
Patent
active
048177113
ABSTRACT:
Process for in situ recovery of carbonaceous values from underground petroleum impregnated media such as oil shale, under controlled radiation from a microwave distributing source adjacent the media, e.g. in a borehole, effected in the absence of air, such that the radiation is distributed at least initially at incrementally increasing power and/or at least initially in intermittent interval cycles of on and off duration of the microwaves, for selective pyrolysis of the organic content of the media to liquid, vapor and gas form as the case may be under autogenous pressure in the pores of the media for driving the organic constituents therefrom for appropriate recovery, e.g. via the borehole, including breakup of larger molecules, e.g. hydrocarbons, for selective increase in the noncondensible gas quantities in proportion to the liquid and/or condensible oil vapor quantities, plus pyrolysis scavenging of residual carbon coke by gasification thereof to noncondensible gas constituents, optionally using a portion of the recovered noncondensible gases to produce electrical energy for energizing the microwave source, and
conjoint probe apparatus having an adjustable extendable probe end for embedding in the porous media for in situ sensing of changes in the dielectric constant of the carbonaceous constituents undergoing microwave pyrolysis, and a mechanism for indicating the sensed changes, for adjusting the radiation in dependence upon such changes, the degree of extension of the probe end being adjustable in dependence upon the sensed frequency of the attendant radiation.
REFERENCES:
patent: 3133592 (1964-05-01), Tomberlin
patent: 4169506 (1979-10-01), Berry
patent: 4193448 (1980-03-01), Jeambey
patent: 4301865 (1981-11-01), Kasevich et al.
patent: 4396062 (1983-08-01), Iskander
patent: 4449585 (1984-05-01), Bridges et al.
patent: 4485868 (1984-12-01), Sresty et al.
patent: 4487257 (1984-12-01), Dauphine
patent: 4620593 (1986-11-01), Haagensen
Magdy R. Iskander, et al., "A Time-Domain Technique for Measurement of the Dielectric Properties of Oil Shale During Processing," Proceeding of the IEEE, Mar. 1981, pp. 1-8.
LandOfFree
System for recovery of petroleum from petroleum impregnated medi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for recovery of petroleum from petroleum impregnated medi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for recovery of petroleum from petroleum impregnated medi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-173099