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pro vyhledávání: '"Colin Dennis Mallett"'
Autor:
James E. Griffith, Colin Dennis Mallett, Gregory Anthony Szutiak, Glen C. Fyten, Tim W. Marriott
Publikováno v:
All Days.
Cementing gas wells in coalbed methane (CBM) formations can present a cement-circulation challenge because the coal formations tend to have low fracture gradients and break down under the hydrostatic pressure of the cement column. The use of conventi