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Mining Publication: Demonstration of Safety Plugging of Oil Wells Penetrating Appalachian Coal Mines
Keywords: Coal mining Seals Sulfur hexafluoride Wells
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: July 1972
Authors: GE Rennick, J Pasini, FE Armstrong, JR Abrams
Reference - July 1972
Download PDF Document (1.44 MB)
NIOSHTIC2 Number: 10009769
U.S. Department of the Interior, Bureau of Mines. Technical Progress Report 56, NTIS No. PB-211350, 1986; :1-12
An oil well penetrating the Pittsburgh bituminous coalbed in northern West Virginia was plugged and safely mined through 3 months later. A sensitive chemical tracer, introduced into the oil reservoir before the test, was not detected in the mine air following the plugging and during mining of the pillar and penetration of the well. Effectiveness of the plugging in preventing reservoir gas from entering the mine through the well hole was verified by continuous monitoring of the mine air for indications of sulfur hexafluoride, an inert gas detectable in amounts as minute as 0.5 Part per billion. Expandable cement and fly ash-gel-water slurry were utilized to seal the well above and below the coal seam. Three other wells were also plugged using various techniques.
Image of publication Demonstration of Safety Plugging of Oil Wells Penetrating Appalachian Coal MinesReference - July 1972
Download PDF Document (1.44 MB)
NIOSHTIC2 Number: 10009769
U.S. Department of the Interior, Bureau of Mines. Technical Progress Report 56, NTIS No. PB-211350, 1986; :1-12
See Also
Assessment of Technology for Non-destructive Testing of In-situ Underground Mine Seals
Compendium of Structural Testing Data for 20-psi Coal Mine Seals
Composition Change Model for Sealed Atmosphere in Coal Mines
Development of a Method for the Remote Characterization of Underground Mine Ventilation Control by Multiple Tracer Gases
Evaluating Ventilation Parameters of Three Coal Mine Gobs
Explosion Pressure Design Criteria for New Seals in U.S. Coal Mines
Explosion Pressure Design Criteria for Seals in U.S. Coal Mine - An Update on Work at NIOSH
Progress Toward Improved Engineering of Seals and Sealed Areas of Coal Mines
Seal Design
Structural Analysis and Design of Seals for Coal Mine Safety
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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