Method of enhancing hydrocarbon production in a horizontal wellb

Details Method of enhancing hydrocarbon production in a horizontal wellb Method of enhancing hydrocarbon production in a horizontal wellb

1988-12-08

1989-11-28

Suchfield, George A.

Wells

Processes

Placing fluid into the formation

166 50, E21B 4327

Patent

active

048831247

ABSTRACT:
A two-step process to stimulate a horizontal wellbore drilled into a carbonate formation. Initially, the wellbore is filled with acid. Because vertical communication exists in the vicinity of the wellbore, the acid enters into the fissures and cracks from the wellbore. Thereafter, a non-reactive displacement fluid, having a density greater than the acid, is injected into the wellbore. This more dense displacement fluid pushes the acid to greater depths into the formation so carbonate dissolution can take place which substantially increases the formation's permeability. Increased permeability enhances the production of hydrocarbonaceous fluids.

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patent: 3918524 (1975-11-01), Broaddus et al.
patent: 4630679 (1986-12-01), Reeves, III et al.

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