The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 1984
Filed:
Sep. 20, 1982
Applicant:
Inventor:
Walter L Richards, Huntington Beach, CA (US);
Assignee:
Methane Drainage Ventures, Placentia, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ; E21B / ;
U.S. Cl.
CPC ...
299-2 ; 166 50 ; 299 12 ; 299 19 ;
Abstract
A method for collecting methane gas from subterranean formations having a plurality of spaced-apart coal seams containing methane gas includes the steps of drilling at least one shaft from the earth's surface to a depth sufficient to intersect a plurality of seams containing gas to be collected, excavating a working area at selected seams with each of the working areas communicating with the shaft, and drilling a plurality of boreholes from each of the working areas into the seams and collecting methane gas from the boreholes.