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:
Nov. 08, 2016
Filed:
Jun. 04, 2013
Saudi Arabian Oil Company, Dhahran, SA;
Noor M. Anisur Rahman, Dhahran, SA;
Faisal M. Al-Thawad, Dhahran, SA;
Saud A. BinAkresh, Dhahran, SA;
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
A system for calculating the radius of investigation of a radial, composite reservoir has a processor with a clock, a display, and an electronic input coupled to the processor. The system divides the reservoir into a predetermined number (n) of concentric regions, and the processor is programmed to calculate periodically the radius of investigation based a starting time or elapsed time, and data relating to the reservoir rock, fluids, and geometries of each of the n regions. The processor computes the radius of investigation using at least one of Equations (1), (2), and (6) through (12) set forth in the specification, if using the System of U.S. Oilfield Units, or using an equivalent equation if using other units. These equations account for the effects of variations of both permeability and storativity in composite reservoirs on the radius of investigation with elapsed time.
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