Internal breaker for oilfield treatments

Details Internal breaker for oilfield treatments Internal breaker for oilfield treatments

2010-03-15

2010-12-28

Suchfield, George (Department: 3676)

Wells

Processes

Specific propping feature

C166S282000, C166S283000, C166S300000, C166S308200, C507S922000, C507S923000

Reexamination Certificate

active

07857051

ABSTRACT:
A composition and method for improving the fluid efficiency of many oilfield treatments is given. The composition is a solid additive, in a viscosified fluid, in a size range small enough that it enters formation pores; it optionally bridges there to form an internal filter cake, and then decomposes to provide a breaker for the viscosifying system for the fluid. Examples of suitable additives include waxes, polyesters, polycarbonates, polyacetals, polymelamines, polyvinyl chlorides, and polyvinyl acetates. Degradation of the additive may be accelerated or delayed.

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