... growth of oil and gas prices between 2000 and 2008 created a very favorable environment to unlock the untapped potential of deposits that had been known for a long time but remained uneconomic. However, the shale revolution rests primarily on four internal "pillars" 1 . The first is a good knowledge...

... Similarly, to conventional treatments, a pumping schedule for a proppant pillar type of fracture comprises a pad stage to create the fracture followed by proppant-laden stages. Therefore, the key difference between pumping schedules for the pillar-propped fracturing and conventional fracturing...

... Abstract A mathematical formulation and solution methodology for placing proppant to create open channels and propped pillar packs in hydraulic fractures is presented. The advantage of this methodology is increased fracture conductivity by creating open channels and/or pillars that support...

... applications are the attachment and detachment processes of micro-organisms and the formation of biofilm structures in porous media. Examples of processes that trigger biofilm formation are, biobridging (formation of chains of microorganisms that stretch from sand grain to sand grain or in our case from pillar...

... in a large-scale stress perturbation, producing a "room-and-pillar" stress structure. Both the fracture azimuth and the degree of secondary sub-horizontal fracturing are controlled by the location of infill wells with respect to nearby injector wells. Infill wells "inline" with injector wells yield fractures...