Method for computing borehole geometry from ultrasonic pulse echo data
Patent 5737277 Issued on April 7, 1998. Estimated Expiration Date: 
October 25, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 25, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod for computing borehole geometry from ultrasonic pulse echo data Patent #: 5638337 InventorAssigneeApplicationNo. 735982 filed on 10/25/1996US Classes:367/27, Time interval measurement367/25, Well logging367/73, Synthetic seismograms and models702/11Formation characteristicExaminersPrimary: Moskowitz, NelsonAttorney, Agent or FirmInternational ClassG01V 001/40AbstractA method for using geometrical data to determine characteristics of a wellbore penetrating a subterranean formation is disclosed. The method involves converting data obtained from acoustic well logging into cartesian coordinates and solving a general quadratic equation by a least squares fit to an elliptical or circular model. More specific information, such as tensor strain and formation compaction along the wellbore may then be obtained from the geometrical data.Other References
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