Anti-sludging treatment

Details Anti-sludging treatment Anti-sludging treatment

E - Fixed Constructions

21

B

31/28

E21B 43/22 (2006.01) C09K 8/528 (2006.01) C09K 8/74 (2006.01)

Patent

CA 1278178

ABSTRACT OF THE DISCLOSURE The invention discloses a process for reducing sludging during acid treatment of an oil well by adding phosphinic acid or a soluble salt thereof and a source of cupric or cuprous ion. The addition of an iodide ion source to this combination aids its effectiveness in stronger acids.

587477

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