The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2009
Filed:
Oct. 20, 2005
Paul Hammond, Bourne, GB;
Paul Hammond, Bourne, GB;
Schlumberger Technology Corporation, Ridgefield, CT (US);
Abstract
A method is provided for estimating the amount of supercharging in a formation penetrated by a wellbore. According to the method, pressure fluctuation measurements are obtained at a position in the formation accessible from the well bore and at an adjacent position in the wellbore, and a model is provided which relates variations in pressure with time at these positions to one or more adjustable parameters from which the amount of supercharging can be estimated. The or each parameter is then adjusted to optimize the fit between the pressure variations predicted by the model and the measured pressure fluctuations, and the amount of supercharging is estimated from the adjusted parameter(s).