USA: shale gas resources may be much overestimated
According to University of Texas scientists shale gas estimates by the U.S. Government are overly optimistic
... begin. Rotary drilling is used. Rocks are penetrated by a bit which is attached to the drill pipe. Drilling mud injected to the drill ...
Artykuł - 10/16/2014 - 15:15
... A. Dourfaye, W. King, M. Thigpen, The current state of PDC bit technology, World Oil, September 2010, s. 41-46. Struktura RTF ...
Artykuł - 12/09/2014 - 12:15
... A. Dourfaye, W. King, M. Thigpen, The current state of PDC bit technology, World Oil, September 2010, s. 41-46. Struktura RTF ...
Artykuł - 01/19/2015 - 12:34