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Last Updated: September 27, 2020

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Patent: 9,090,815

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Summary for Patent: 9,090,815
Title:Method of using asparaginase as a polyacrylamide enzyme breaker
Abstract: Asparaginase, such as asparaginase derived from Aspergillus oryzae, may be used to break down or defragment polyacrylamides in oil field applications. The asparaginase is useful in reducing the viscosity of a fracturing fluid containing polyacrylamide and a crosslinking agent. The asparaginase is also useful in breaking down or defragmenting a polyacrylamide friction reducing agent, such as in a slickwater fracturing operation. Asparaginase may also be used to break down or defragment filter cakes containing polyacrylamide.
Inventor(s): Gupta; D. V. Satyanarayana (The Woodlands, TX)
Assignee: Baker Hughes Incorporated (Houston, TX)
Application Number:13/467,906
Patent Claims:see list of patent claims

Details for Patent 9,090,815

Applicant Tradename Biologic Ingredient Dosage Form BLA Number Approval Date Patent No. Assignee Estimated Patent Expiration Status Orphan Source
Merck ELSPAR asparaginase VIAL 101063 001 1978-01-10   Start Trial Baker Hughes Incorporated (Houston, TX) 2031-05-13 RX search
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Number >Approval Date >Patent No. >Assignee >Estimated Patent Expiration >Status >Orphan >Source

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