Development well drilling

Details Development well drilling Development well drilling

E - Fixed Constructions

21

B

255/6

E21B 7/04 (2006.01) E21B 43/30 (2006.01)

Patent

CA 1255288

Abstract A method for development drilling in a mineral produc- ing field such as an oil and gas field wherein a plurality of wellbores are drilled in the earth through at least one mineral containing subsurface geologic formation, the plurality of wellbores being drilled from a central drill site radially outwardly therefrom wherein said wellbores are drilled at varying angles from vertical within the range of from about 30 to about 87.5 degrees from vertical, said wellbores passing through said at least one formation at said angle from vertical.

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