Report of Investigations 8295: Methane Drainage: Experience with Hydraulic Stimulation Through Slotted Casing

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8295
• Personal Author:
  Lambert, Stephen W. ; Trevits, Michael A.
• Description:
  The Bureau of Mines examined the wellbore of a vertical gas drainage well in the Mary Lee coalbed to determine the results of specific completion procedures in coal. A jet-slotting tool was used to cut four vertical slots through the casing about 1 ft below the coalbed. Even though stimulation treatment pressure was excessive, hydraulically induced channels were contained entirely within the target coal zone. Sand-filled, induced channels were horizontal, inclined, and vertical, and were propagated in directions similar to bedding planes, rock joint, and coal cleat directions measured in the mine. Variable gas flow rates, recorded during the productive life of the well, were attributed to chronic downhole pump malfunction and the slotted casing below the production zone. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Engineering Explosions Methane Mining Occupational Health Safety
• Keywords:
  Mine-gases; Mining-industry; Methanes; Methane-drainage; Methane-control; Explosive-gases; Explosive-atmospheres; Underground-mining; Coal-mining; Control-technology; Engineering-controls
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8295, 1978 Jan; :1-16
• 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:
  20 pdf pages
• NIOSHTIC Number:
  nn:10000676
• NTIS Accession Number:
  PB-290114
• CAS Registry Number:
  Methane (CAS RN 74-82-8)
• Federal Fiscal Year:
  1978
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:46953b52476da78d648cee3744ec885962f460aec21c9c5ac2ebe2f460d072011ed4c8cccaf54ccbe852b06902397d37beeb5d0fb4227886afe857cac9b873ba
• Download URL:
  https://stacks.cdc.gov/view/cdc/9268/cdc_9268_DS1.pdf
• File Type:
  [PDF - 857.58 KB ]