Method for acidizing a subterranean formation

Details Method for acidizing a subterranean formation Method for acidizing a subterranean formation

Category

E - Fixed Constructions

Subcategory

21

Subsubcategory

B

CPC

166/25

IPC codes

E21B 43/27 (2006.01) C09K 8/72 (2006.01)

Type

Patent

Patent number

CA 1090246

Description

ABSTRACT The permeability of a subterranean formation is increased by injecting into the formation, a conventional mud acidizing solution (HCl/HF) followed by a fluoboric acid solution. Use of fluoboric acid as an overflush is believed to deter clay migration and thereby significantly reduce or delay production decline which is often otherwise encountered shortly after conventional mud acidizing treatments.

Application Number

308924

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