Title:
SYSTEMS, METHODS, AND COMPUTER-READABLE MEDIA FOR CONTINUOUS CAPILLARY PRESSURE ESTIMATION
Document Type and Number:
WIPO Patent Application WO/2014/190261
Kind Code:
A3
Abstract:
Provided are methods, systems, and computer-readable media for determining capillary pressure in a basin/reservoir. Well log data is obtained that includes permeability log data, porosity log data, water saturation log data, and oil saturation log data. Thomeer parameters for a multi-pore system of a Thomeer model are determined by evaluating an objective function that measures the mismatch between the well log data and modeled data having the Thomeer parameters as input. The objective function is iterative!}' evaluated using linear equality constraints, linear inequality constraints, and nonlinear equality constraints until convergence criteria are met.
Inventors:
MEZGHANI MOKHLES MUSTAPHA (SA)
AL IBRAHIM MUSTAFA (SA)
BUITING JOHANNES JACOBUS MARIA (SA)
AL IBRAHIM MUSTAFA (SA)
BUITING JOHANNES JACOBUS MARIA (SA)
Application Number:
PCT/US2014/039339
Publication Date:
January 15, 2015
Filing Date:
May 23, 2014
Export Citation:
Assignee:
SAUDI ARABIAN OIL CO (SA)
ARAMCO SERVICES CO (US)
ARAMCO SERVICES CO (US)
International Classes:
G01V11/00
Domestic Patent References:
| WO2014137863A2 | 2014-09-12 |
Foreign References:
| US20120065888A1 | 2012-03-15 |
Other References:
BO GAO ET AL: "New Method for Predicting Capillary Pressure Curves from NMR Data in Carbonate Rocks", SPWLA 52ND ANNUAL LOGGING SYMPOSIUM,, 14 May 2011 (2011-05-14), pages 1 - 11, XP007922898
THOMEER J H M: "Introduction of a Pore Geometrical Factor Defined by the Capillary Pressure Curve", JOURNAL OF PETROLEUM TECHNOLOGY, SOCIETY OF PETROLEUM ENGINEERS, US, vol. 12, no. 3, 1 March 1960 (1960-03-01), pages 73 - 77, XP008118191, ISSN: 0149-2136
THOMEER J H M: "Introduction of a Pore Geometrical Factor Defined by the Capillary Pressure Curve", JOURNAL OF PETROLEUM TECHNOLOGY, SOCIETY OF PETROLEUM ENGINEERS, US, vol. 12, no. 3, 1 March 1960 (1960-03-01), pages 73 - 77, XP008118191, ISSN: 0149-2136
Attorney, Agent or Firm:
RHEBERGEN, Constance, Gall (P.O. Box 61389Houston, TX, US)
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