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Title: Underground gasification of coal

Abstract

There is disclosed a method for the gasification of coal in situ which comprises drilling at least one well or borehole from the earth's surface so that the well or borehole enters the coalbed or seam horizontally and intersects the coalbed in a direction normal to its major natural fracture system, initiating burning of the coal with the introduction of a combustion-supporting gas such as air to convert the coal in situ to a heating gas of relatively high calorific value and recovering the gas. In a further embodiment the recovered gas may be used to drive one or more generators for the production of electricity.

Inventors:
 [1];  [1];  [2]
  1. (Morgantown, WV)
  2. Uniontown, PA
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
OSTI Identifier:
862451
Patent Number(s):
3933447
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
underground; gasification; coal; disclosed; method; situ; comprises; drilling; borehole; earth; surface; enters; coalbed; seam; horizontally; intersects; direction; normal; major; natural; fracture; initiating; burning; introduction; combustion-supporting; gas; air; convert; heating; relatively; calorific; value; recovering; embodiment; recovered; drive; generators; production; electricity; calorific value; heating gas; direction normal; combustion-supporting gas; comprises drilling; supporting gas; underground gas; /166/40/48/60/299/

Citation Formats

Pasini, III, Joseph, Overbey, Jr., William K., and Komar, Charles A. Underground gasification of coal. United States: N. p., 1976. Web.
Pasini, III, Joseph, Overbey, Jr., William K., & Komar, Charles A. Underground gasification of coal. United States.
Pasini, III, Joseph, Overbey, Jr., William K., and Komar, Charles A. Tue . "Underground gasification of coal". United States. https://www.osti.gov/servlets/purl/862451.
@article{osti_862451,
title = {Underground gasification of coal},
author = {Pasini, III, Joseph and Overbey, Jr., William K. and Komar, Charles A},
abstractNote = {There is disclosed a method for the gasification of coal in situ which comprises drilling at least one well or borehole from the earth's surface so that the well or borehole enters the coalbed or seam horizontally and intersects the coalbed in a direction normal to its major natural fracture system, initiating burning of the coal with the introduction of a combustion-supporting gas such as air to convert the coal in situ to a heating gas of relatively high calorific value and recovering the gas. In a further embodiment the recovered gas may be used to drive one or more generators for the production of electricity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

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