Dow Global Technolgoies LLC

Rohm and Haas Company

Kacee B Ender

Robert E Scheid, Jr

Karl V Jacob

Ka Chun A Chan

Akshay Bellare

Tina P Dasbach

Tim D Cabelka

Theodore Tysak

Paul Mercando

Carol E Mohler

Chun Liu

Disha Jain

Carol Elaine Mohler

Robert E Scheid

A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as magnesium peroxide. The encapsulating material may be a polymer, including a metal crosslinked acrylic polymer. The release of peroxide, from peroxide sources generally, can be controlled by means of pH such that peroxide source can be activated, and peroxide released, by a change in pH. In a wellbore, this pH change can be effected by using produced fluids to lower the pH of a more basic wellbore fluid.

Encapsulated internal filter cake breakers with improved release properties

Granular material for dosage forms

A dosage form for controlled release is produced from a composition comprising a granular material having a mean particle diameter of 150 to 350 micrometers and a compactibility resulting in a compact with a tensile strength of at least 1.7 MPa when the granular material is subjected to a compaction pressure of 266 MPa, at least 80 percent of the granular material being a water-soluble cellulose ether, water-soluble cellulose ester, an alkylene oxide homo- or copolymer, or a blend thereof; and an active ingredient.

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Missouri City, TX, United States of America

Kacee B Ender