Process to enhance removal of adhering solids from the...

Details Process to enhance removal of adhering solids from the... Process to enhance removal of adhering solids from the...

E - Fixed Constructions

21

B

E21B 37/00 (2006.01) C09K 8/52 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2230508

The invention provides: (1) a process to enhance the removal of solids such as clays, clay-like solids, and shale solids-drill solids-from the surface of a borehole, the solids being deposited from well drilling, completion, or workover fluids during well servicing operations; and (2) a process to enhance the removal of such solids from screens or other sand control devices present in a borehole. The process comprises contacting the solids with an acidic soak solution containing a polyglycol or mono ether derivative thereof and thereafter contacting the surface of the borehole with a wash solution to remove the solids from the borehole.

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