US Patent 7451819 Openhole perforating

Patent 7451819 was granted and assigned to Schlumberger on November, 2008 by the United States Patent and Trademark Office.

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US Patent 11988066 Dynamic underbalance sub

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US Patent 11946352 Coordinated pumping operations

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Patent Inventor Names

Frank F. Chang0

Ian C. Walton0

Keng Seng Chan0

Lawrence A. Behrmann0

Edits on 15 Sep, 2023

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Golden AI

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Patent abstract

An underbalanced perforating system is disclosed for use in openhole completions to maximize the wellbore and matrix cleanup efficiency, to connect natural fracture patterns, and/or to enable application of new drilling fluid technology in difficult subsurface environments. The perforating system can be used for any hydrocarbon bearing formations with any lithology.

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Patent Citations Received

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US Patent 11753890 Real-time pump-down perforating data acquisition and application automation response

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