Transcription of Elements of Hydraulic Fracturing - Schlumberger
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Elements of Hydraulic Fracturing - Schlumberger
DEFINING Hydraulic Fracturing . Elements of Hydraulic Fracturing P breakdown Richard Nolen-Hoeksema P reopening Editor P closure A well's ability to produce hydrocarbons or receive injection uids is limited by the reservoir's natural permeability and near-wellbore changes resulting Bottomhole pressure, P. from drilling or other operations. Hydraulic Fracturing , also known as Pumping rate Hydraulic stimulation, improves hydrocarbon ow by creating fractures in the formation that connect the reservoir and wellbore. Reopening A Hydraulic fracture is a pressure-induced fracture caused by injecting uid into a target rock formation. Fluid is pumped into the formation at After pressures that exceed the fracture pressure the pressure at which rocks closure Breakdown break. To access a zone for stimulation, engineers perforate the casing P initial across the interval and use retrievable plugs to isolate the interval from other open zones.
52 Oilfield Review DEFINING HYDRAULIC FRACTURING Therefore, induced downhole pressures must exceed the minimum princi-pal stress to extend fracture length. After performing fracture initiation, engineers pressurize the zone for
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