Process for selectively reducing the fluid injection rate or production rate of a well

Patent · Tue Feb 28 04:00:00 EST 1984

OSTI ID:6804140

Sydansk, R D

A process for improving areal conformance of fluids injected into or produced from a subterranean formation via a multiwell system wherein significantly greater amounts of fluid than desired are injected into or produced from at least one well of the multiwell system than from other wells of the system. An aqueous caustic solution, an aqueous solution containing a polyvalent cation dissolved therein, and a hydrocarbon spacer separating the aqueous solutions are injected into the hydrocarbon formation. The aqueous solutions are caused to mix in the near well bore environment of said at least one well thereby forming an insoluble precipitate which reduces the permeability of the near well bore environment over substantially the entire well bore interval.

• Assignee: Marathon Oil Company
• Patent Number(s): US 4433729
• OSTI ID: 6804140
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AQUEOUS SOLUTIONS
CATIONS
CHARGED PARTICLES
CHEMICAL PREPARATION
CONTROL
DISPERSIONS
ENHANCED RECOVERY
FLOW RATE
FLUID INJECTION
HYDROGEN COMPOUNDS
HYDROXIDES
IONS
MIXTURES
OIL WELLS
OXYGEN COMPOUNDS
PERMEABILITY
PLUGGING AGENTS
PRECIPITATION
RECOVERY
RESERVOIR ROCK
SEPARATION PROCESSES
SOLUTIONS
SYNTHESIS
WELLS