This paper describes a method for planning a pressure survey (a series of pressure, depth measurements), and for using a pressure survey tool, so that the user can predict in advance the number of pressure tests needed to be performed in a pressure survey such that the resulting pressure gradient will be accurate within a desired standard deviation. It further describes a method and process for performing a pressure survey, including measuring pressure gradient and standard deviation thereof for downhole fluid bearing formations, using information collected from pressure survey apparatus, such that the requisite amount of information is collected to ensure the measurements actually received are within the desired standard deviation. There is a patent pending in the U.S. Patent Office for the technology described herein.
- Petroleum Institute
A Method for Planning and Performing a Pressure Survey to Achieve Desired Accuracy of Pressure Gradient
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Hebert, JJ. "A Method for Planning and Performing a Pressure Survey to Achieve Desired Accuracy of Pressure Gradient." Proceedings of the ASME 2002 Engineering Technology Conference on Energy. Engineering Technology Conference on Energy, Parts A and B. Houston, Texas, USA. February 4–5, 2002. pp. 831-838. ASME. https://doi.org/10.1115/ETCE2002/PROD-29117
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