Abstract:
THE PRESENT INVENTION RELATES TO METHODS AND COMPOSITIONS FOR REDUCING THE FRICTIONAL PRESSURE LOSS ENCOUNTERED IN THE TURBULENT FLOW OF HYDROCARBON LIQUIDS THROUGH A CONDUIT. BY THE PRESENT INVENTION A FRICTIONAL PRESSURE LOSS ADDITIVE IS INTERMIXED WITH THE HYDROCARBON LIQUID, THE ADDITIVE BEING HOMOPOLYMER OR A COPOLYMER OF ALKYL ACRYLATE AND METHACRYLATE MONOMERS HAVING ESTER GROUPS CONTAINING FROM 4 TO 18 CARBON ATOMS OR COPOLYMERS OF SUCH MONOMERS AND CERTAIN STYRENE ACRYLATE OR METHACRYLATE TYPE MONOMERS.
Abstract:
A fracture in a subterranean formation having zones of solids intermittently spaced throughout the fracture is formed by injecting alternating quantities of displacement liquid and carrier liquid having solids supported therein into the fracture to extend the fracture into the subterranean formation.
Abstract:
THE PRESENT INVENTION RELATES TO THE METHODS AND COMPOSITIONS FOR REDUCING THE FRICTIONAL PRESSURE LOSS ENCOUNTERED IN THE TURBULENT FLOW OF HYDROCARBON LIQUIDS THROUGH A CONDUIT. BY THE PRESENT INVENTION A FRICTIONAL PRESSURE LOSS ADDITIVE IS INTERMIXED WITH THE HYDROCARBON LIQUID, THE ADDITIVE BEING A HOMOPOLYMER OR A COPOLYMER OF THE MONOMER
R1-C(=CH2)-C6H4-R2
OR COPOLYMERS OF SUCH MONOMER AND CERTAIN STYRENE, ACRYLATE OR METHACRYLATE TYPE MONOMERS.
Abstract:
A subterranean formation is fractured by a method whereby anionic surface active agents, low molecular weight anionic polyelectrolytes or mixtures thereof are adsorbed on the organic polymer attracting sites in the formation adjacent to the faces of the fracture extending into the subterranean formation. These anionic surface active agents, low molecular weight anionic polyelectrolytes desorb and are removed from the formation in the produced fluids.
Abstract:
This invention provides a fracturing fluid having a high viscosity at temperatures above 200*F comprising an aqueous fluid having a pH of less than 7, a water soluble alcohol and a corsslinked polysaccharide.