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#1
03-13-2016, 08:43 PM
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Turning to frack tech, stricken U.S. oil drillers test new limits
Turning to frack tech, stricken U.S. oil drillers test new limits
NEW YORK, March 13 (Reuters) - Fifty-stage frack jobs. Fifteen-foot cluster spacing. More than 2,000 pounds of proppant concentrate per foot.  ??????? ??????: Turning to frack tech, stricken U.S. oil drillers test new limits || ??????: ahlam1399 || ??????: اسم منتداك
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