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U.S. Department of Energy
Office of Scientific and Technical Information

Hydraulic fracturing with spaced props

Patent ·
OSTI ID:6330415
This method of hydraulic fracturing with spaced props causes the fracture props and soluble spacers to move along in a fracture at more nearly the same velocity, even though they have different densities. This is accomplished by changing the size of the spacer particles to cause them to move at the same velocity as the props. The ratio of diameters of high density and low density particles can vary considerably depending on particle size, liquid velocity, particle density differences, and the like. The propping particles used are hard plant seed particles such as rounded black walnut shells having a density of about 1.4, while the spacer particles are an oil-soluble resin having a density of about 1.1. The diameters of the oil-soluble resin particles are about 0.9 times the diameter of the hard plant seed particles. (5 claims)
Assignee:
Pan American Petr Corp
Patent Number(s):
US 3354959
OSTI ID:
6330415
Country of Publication:
United States
Language:
English