Kuraray Co., Ltd.

Kurarayco., Ltd.

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Keisuke Morikawa

Masaki Kato

Takuma Kaneshima

Yoriko Imaoka

Michael Collins

Richard Cazares

Yuta Taoka

Yasuhiro Tajima

Levi Neufeld

Brittany Spell

Erik Bateham

Amanda Reneau

Disclosed are compositions and kits of fibers and acid-functional vinyl alcohol polymers, wherein such compositions and kits are useful for wellbore remediation as applied to a subterranean formation traversed by the borehole of an oil or gas well.

Kits and compositions containing vinyl alcohol polymers and fibers

Disclosed are particulate polyvinyl alcohol-based compositions for use in manufacturing chemical materials and in other industrial operations, and for treatments applied to a subterranean formation traversed by the borehole of an oil or gas well, which compositions are prepared by granulating polyvinyl alcohol polymers, and admixing the granules so produced with powder and/or crushing the granules to a specified particle size distribution.

Polyvinyl alcohol compositions having improved particle size distribution

Disclosed are particulate compositions comprising particles of a blend of one or more polyvinyl alcohol polymers with one or more aliphatic polyester polymers, wherein such particulate compositions are useful, for example, as plugging agents for treatments applied to a subterranean formation traversed by the borehole of an oil or gas well.

Polyvinyl alcohol-based particulate compositions

A particulate plugging agent, such as a diverting agent and/or loss circulation material, using a particular polyvinyl alcohol with a certain amount of monovalent metallic salt, which is water-soluble and has a buffer effect even if the environment is acidic, and thus stable, which in particular finds use in various subsurface oil production operations.

Particulate polyvinyl alcohol plugging agents

A particulate compacted copolymer polyvinyl alcohol-based composition that can be used as a plugging agent for minimizing or eliminating loss of circulation of fluids during the process of well drilling, workover, completion and cementing in the production of oil and gas.

Particulate plugging agent based on hydrophobically-modified vinyl alcohol polymers

A biodegradable and substantially water-soluble thermoplastic polyvinyl alcohol-based diverting agent is provided which comprises pellets of a specified polyvinyl alcohol optionally with certain specified additives, which pellets are made in an extruder and cut to a specified size.

Diverting agents based on thermoplastic polyvinyl alcohol pellets

Provided are particulate polyvinyl alcohol-based diverting agents for use in subterranean treatments, which are prepared by compacting a specified polyvinyl alcohol copolymer optionally with certain specified additives and optionally other polyvinyl alcohols.

Polyvinyl alcohol based diverting agents

Provided are low dust-content particulate polyvinyl alcohol-based compositions suitable for a variety of end uses including for use in subterranean treatments and for manufacturing chemical materials, which are prepared by compacting a specified polyvinyl alcohol polymer resins, optionally with specified additives and/or other polyvinyl alcohols.

Particulate polyvinyl alcohol compositions having reduced dust content

The present invention relates generally to a highly-hydrolyzed polyvinyl alcohol composition having increased cold-water solubility, a process for making such a polyvinyl alcohol composition, and various end uses thereof.

Particulate polyvinyl alcohol copolymers, process for making and uses of the same

The present invention relates generally to a polyvinyl alcohol composition having higher amorphous polyvinyl alcohol polymer content and various end uses thereof.

Particulate polyvinyl alcohol, process for making and uses of the same

The present invention relates generally to a polyvinyl alcohol composition having higher amorphous polyvinyl alcohol polymer content, a process for making such a polyvinyl alcohol composition, and various end uses thereof.

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Houston, TX, United States of America

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