WELL TREATMENT FLUIDS CONTAINING AN YLIDE OR A VITAMIN B AND METHODS OF USING THE SAME

摘要

Viscosifying polymers are effectively degraded during a well treatment operation with an ylide breaker or a vitamin B cofactor. The vitamin B cofactor is an ylide, vitamin B₁, vitamin B₂, vitamin B₃, vitamin B₆, vitamin B₉ or vitamin B₁₂ or mixtures thereof. Such breakers are effective at room and elevated temperatures and high pH environments.