Method of underground gasification of a series of gently dipping

Details Method of underground gasification of a series of gently dipping Method of underground gasification of a series of gently dipping

1984-11-16

1986-09-09

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

48210, 48DIG6, 166258, 166259, E21B 4324, E21B 43243, E21C 4300

Patent

active

046103031

ABSTRACT:
A method of underground gasification of a series of gently dipping and inclined coal seams comprises the steps of determining the depth of occurrence and the thickness of each coal seam in said series thereof, opening the seams by drilling operating wells, interconnecting them within the given seam, setting the coal afire, and gasifying the seams. A safe mining depth is determined for each coal seam in the series and said series of the seams is gasified upwards when a rock thickness therebetween exceeds a safe mining depth for the underlying seam and downwards when the rock thickness therebetween exceeds said safe depth, a firing boundary of the underlying seam being shifted towards a coal pillar by an amount equal to or greater than a first spacing of rock caving in the roof of a gasified layer.

REFERENCES:
patent: 4083402 (1978-04-01), Antonova et al.
patent: 4089374 (1978-05-01), Terry
patent: 4243101 (1981-01-01), Grupping
patent: 4422505 (1983-12-01), Collins
patent: 4448252 (1984-05-01), Stoddard et al.
M. A. Iophif and I. A. Turchaninov, ZNIIpodzemgas Proceedings, No. 6, Moscow, 1962, pp. 43-54-Russian with English Translation.

Affiliated with

Also associated with

Rating

Method of underground gasification of a series of gently dipping does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of underground gasification of a series of gently dipping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of underground gasification of a series of gently dipping will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1011236