Method of dissolving organic filter cake

Details Method of dissolving organic filter cake Method of dissolving organic filter cake

1988-01-14

1989-03-07

Suchfield, George A.

Wells

Processes

Placing fluid into the formation

252 8553, E21B 4327

Patent

active

048097837

ABSTRACT:
A method of increasing the production of hydrocarbons from a subterranean formation wherein an undesirable filter cake is present, resulting from the introduction of gelled polysaccharide containing fluids into the formation, comprising contacting the formation with an effective amount of a treatment fluid comprising a soluble source of fluoride ions present in an amount sufficient to provide a molar concentration of from about 0.01 about 0.5, having a pH in the range of from about 2 to about 4, whereby at least a portion of the filter cake is caused to dissolve.

REFERENCES:
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patent: 4151879 (1979-05-01), Thomas
patent: 4160483 (1979-07-01), Thomas et al.
patent: 4343363 (1982-08-01), Norton et al.
patent: 4479543 (1984-10-01), Kalfayan et al.
patent: 4609475 (1986-09-01), Hanlon et al.
patent: 4686052 (1987-08-01), Baranet et al.
SPE 15629 "Proppant Rock Impairment During Hydraulic Fracturing", by L. Roodhart, T. O. Kuiper, and D. R. Davies, Koninklijke/Shell E & P Laboratorium.

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