CBM Production Wells

CBM Production Wells

 Drilling CBM Production Wells in Africa

These wells were surface set with 8 5/8″ surface casing through Kalahari Sands and anchored into the basalt formation.  Rigs were set up with conventional circulation drill pipe and down hole hammers.  Wells were drilled with twin 1150 x 350 compressors and a 2000 psi booster to set 5 1/2″ longstring.   Insitu water flows were high and were supplemented with water injection and foam to limit well bore damage as much as possible.

Local crews were trained in gas well drilling and supervisors were trained in safe production well operations.  Wells were orifice tested while drilling for gas.  Cementing was completed to limit the weight of cement on the formation.

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