Report of Investigations 7762: The Composition of Coalbed Gas

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7762
• Personal Author:
  Kim, Ann G.
• Description:
  Samples of gas were obtained directly from the coalbed during drilling of horizontal and vertical boreholes in six different formations. The samples were analyzed by gas chromatography for C1 to C5 hydrocarbons and for 02, N2, H2, He, and CO2. Methane in the gas varied from 63 to 99 percent; carbon dioxide from 0.1 to 15 percent. The Ch4/CO2 ratio varied and showed no apparent correlation with age, rank, or bed. The majority of samples contained ethane, propane, and butane; hydrogen and helium were found in some samples. Oxygen and nitrogen were usually present, possibly as a result of air contamination. A more extensive sampling program would be necessary to establish a relationship between the amount and composition of the gas in the coalbed and other factors. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Engineering Explosions Methane Mining Occupational Health Safety
• Keywords:
  Mining-industry; Methane-control; Methane-drainage; Underground-mining; Coal-mining; Mine-ventilation; Mine-gases; Methanes; Explosive-gases; Explosive-atmospheres; Control-technology; Engineering-controls; Explosion-prevention; Explosive-hazards
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7762, 1973 Jan; :1-9
• Series:
  Mining Publications   ; NIOSH Numbered Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  12 pdf pages
• NIOSHTIC Number:
  nn:10000604
• NTIS Accession Number:
  PB-221574
• CAS Registry Number:
  Butane (CAS RN 106-97-8) ; Carbon dioxide (CAS RN 124-38-9) ; Ethane (CAS RN 74-84-0) ; Helium (CAS RN 7440-59-7) ; Hydrogen (CAS RN 1333-74-0) ; Methane (CAS RN 74-82-8) ; Propane (CAS RN 74-98-6)
• Federal Fiscal Year:
  1973
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:3670a7ab829db17ac68377d15e7dbdda9f05030a16f081d056c664914c5a94ac2ed952d892d68e5b46b3792a24e9354fbdcf43249ae58d1ef7914ab4ef1eba42
• Download URL:
  https://stacks.cdc.gov/view/cdc/9219/cdc_9219_DS1.pdf
• File Type:
  [PDF - 351.96 KB ]