US Patent 7677311 Internal breaker for oilfield treatments

Patent 7677311 was granted and assigned to Schlumberger on March, 2010 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Schlumberger

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

76773110

Patent Inventor Names

Yiyan Chen0

Jesse C. Lee0

Lijun Lin0

Philip F. Sullivan0

Belgin Baser0

Carlos Abad0

Erik Nelson0

Date of Patent

March 16, 2010

Patent Application Number

115325530

Date Filed

September 18, 2006

Patent Primary Examiner

‌

George Suchfield

Patent 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.