In situ coal gasification

Details In situ coal gasification In situ coal gasification

E - Fixed Constructions

21

B

166/36

E21B 43/243 (2006.01) E21B 43/12 (2006.01) F15D 1/00 (2006.01)

Patent

CA 1179252

ABSTRACT OF THE DISCLOSURE In an injection well for underground gasifica- tion of carbonaceious materials, either liquids or solids, by partial combustion with oxygen-rich gas in the presence of a moderating fluid such as steam, air, CO2 or the like, in which the moderating fluid is introduced through an annular path surrounding the injection tube through which the oxygen-rich gas is injected, back flow of gasification products from the well is prevented by providing a flow restriction in the annular path to increase the linear flow velocity of the moderating fluid while maintaining the designed mass flow rate of said moderating fluid. The flow restriction is so designed that at the predetermined downward flow rate of said moderating fluid the critical velocity of the moderating fluid at the restriction corresponds to the formula: Image wherein g is the gravity constant, D is the equivalent diameter of the largest opening in the restriction.

412124

Affiliated with

Also associated with

Rating

In situ coal gasification does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with In situ coal gasification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In situ coal gasification will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1260591