Saudi Arabian Oil Company

Leland Stanford Junior University

Other

Glasspoint Solar, Inc.

Anthony Robert Kovscek

John Setel O'Donnell

Amar Jaber M Alshehri

Mohammed J Alshakhs

Methods of preparing an injection fluid for enhancing hydrocarbon recovery from a formation are described. A divalent salt is added to wastewater to form salinated wastewater. The salinated wastewater is tested for a shift in wettability. The salinated wastewater is tested for a change in oil recovery. The salinated wastewater is applied as an injection fluid. The shift in wettability is equal to or greater than a predetermined wettability differential value, and the change in oil recovery of the salinated wastewater is equal to or greater than a predetermined oil recovery differential value.

Salinated wastewater for enhancing hydrocarbon recovery

Example methods and systems are described for performing core-flood tests for evaluating effectiveness of hydrocarbon recovery techniques. In some aspects, a core-flood test system includes a core holder configured to be coupled to a computed tomography (CT) scanner system to monitor fluid saturations of a core including a rock sample and a core sleeve to be received in the core holder. The core holder and the core sleeve are separated by a confining space. The core sleeve is configured to receive the core. The core sleeve is configured to contact the core in response to a confining pressure applied to the core sleeve in the confining space and to be separate from the core in response to the confining pressure being removed, creating a fracture space between the core and the core sleeve.

Multi-objective core-flood test system for oil recovery evaluation

Techniques for subsurface thermal energy storage of heat generated by concentrating solar power enable smoothing of available energy with respect to daily and/or seasonal variation. Solar thermal collectors produce saturated steam that is injected into a producing or wholly/partially depleted oil reservoir that operates as a heat storage reservoir. Some of the saturated steam generated by the collectors is optionally used to generate electricity. Heat is withdrawn from the reservoir as saturated steam and is used to operate an active thermal recovery project (such as a producing thermally enhanced oil reservoir) and/or to generate electricity. Withdrawn heat is optionally augmented by heat produced by firing natural gas. The reservoir is optionally one that has been used for thermally enhanced oil recovery and thus is already warm, minimizing heat losses.

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San Carlos, CA, United States of America

Anthony Robert Kovscek