Chhina
Harbir Chhina, Calgary CA
Patent application number | Description | Published |
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20120205096 | METHOD FOR DISPLACEMENT OF WATER FROM A POROUS AND PERMEABLE FORMATION - A method and system for displacing water from a porous geological formation are provided. The zone to be displaced is defined by the injection of water into one or more barrier wells around the zone. One or more gas injection wells and water production wells are located within the zone. During pressurized gas injection within the zone, the barrier wells are operated to achieve a hydraulic pressure barrier surrounding the zone that is sufficient to prevent penetration therethrough by the injected gas. The well system is operated to concurrently limit gas entry into the water production well. Accordingly, the gas displaces water downward within the zone such that water is produced at the water production wells. | 08-16-2012 |
20130146285 | PROCESS AND WELL ARRANGEMENT FOR HYDROCARBON RECOVERY FROM BYPASSED PAY OR A REGION NEAR THE RESERVOIR BASE - Hydrocarbons may be produced from a well which comprises a contour section that follows a contour of a depression on a contoured base above which the reservoir is formed. Hydrocarbons may also be produced from a first well in a gravity-controlled recovery process and a second well which extends under and across the first well. For recovery of hydrocarbons from a reservoir, a pair of injection and production wells may be positioned and configured to optimize an initial rate of production from a pay region in the reservoir, and another well for producing hydrocarbons may be located below the production well and be positioned and configured to optimize an amount of hydrocarbon recovery from the pay region. | 06-13-2013 |
Harbir Chhina, Alberta CA
Patent application number | Description | Published |
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20120205127 | SELECTIVE DISPLACEMENT OF WATER IN PRESSURE COMMUNICATION WITH A HYDROCARBON RESERVOIR - Methods and systems are provided for selectively displacing water from a hydraulically continuous water zone in a porous geological formation. The target zone to be displaced is defined by a hydrodynamically maintained pressure differential, which has been shown to be capable of confining an expanding injected gas zone. One or more gas injection wells and water production wells are located within the zone. During pressurized gas injection within the zone, the gas displaces water downward within the confined zone such that water is selectively produced from the target zone and the injected gas zone is confined within the hydraulically continuous water zone. | 08-16-2012 |
Harbir S. Chhina, Calgary CA
Patent application number | Description | Published |
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20080264635 | Hydrocarbon Recovery Facilitated by in Situ Combustion Utilizing Horizontal Well Pairs - The invention provides hydrocarbon recovery processes that may be utilized in heavy oil reservoirs. Horizontal hydrocarbon production wells may be provided below horizontal oxidizing gas injection wells, with distant combustion gas production wells offset from the injection well by a distance that is greater than the hydrocarbon production well offset distance. Oxidizing gases injected into the reservoir through the injection well support in situ combustion, to mobilize hydrocarbons. The process may be adapted for use in a reservoir that has undergone depletion of petroleum in a precedential petroleum recovery process, such as a steam-assisted-gravity-drainage process, leaving a residual oil deposit in the reservoir as well as mobile zone chambers. Processes of the invention may be modulated so that a portion of the residual oil supports in situ combustion, while a larger portion of the residual oil is produced, by channelling combustion gases along the pre-existing mobile zones with the reservoir. | 10-30-2008 |
20120193094 | MULTIPLE INFILL WELLS WITHIN A GRAVITY-DOMINATED HYDROCARBON RECOVERY PROCESS - A method for recovering hydrocarbons from a subterranean reservoir by operating a substantially gravity-controlled recovery process with two adjacent well pairs. Each well pair includes an injector well and a producer well. A mobilized zone forms around each well pair through the gravity-controlled recovery process, and a bypassed region forms between the adjacent well pairs when the respective mobilized zone of each well pair merge to form a common mobilized zone. A plurality of infill producer wells are provided in the bypassed region. The plurality of infill producer wells are operated to establish fluid communication between the plurality of infill producer wells and the common mobilized zone. Once fluid communication is established, the plurality of infill producer wells and the adjacent well pairs are operated under a substantially gravity-controlled recovery process, and hydrocarbons are recovered from the plurality of infill producer wells and from the producer wells. | 08-02-2012 |
Ramendra S. Chhina, Bethesda, MD US
Patent application number | Description | Published |
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20150053689 | Waste Bag Replacement Cartridge System for Waste Receptacles - A waste bag dispenser system is described which is comprised of track guides known as rails, and a replaceable waste bag cartridge attached to the bottom of the rails, which are preferably surrounded by screen walls. The waste bag cartridge stores a plurality of waste bags stacked on top of each other, connected temporarily in sequence. Each waste bag has multiple connecting tabs (T-bar tabs) affixed to the bag which align with and insert into a slot in the rails such that the tabs may only exit the slot from the top of the rails. The rails and waste bag cartridge are held in an aligned arrangement via either a clasping mechanism or a surrounding structure which inhibits the movement of both elements. Waste bags are pulled up from the waste bag cartridge to the top of the rails and held in place via at least one hook. | 02-26-2015 |
20150053690 | Waste Bag Replacement Cartridge System for Waste Receptacles - A waste bag dispenser system is described which is comprised of track guides known as rails, tab retainer posts, and a replaceable waste bag cartridge attached to the bottom of the rails, which are preferably surrounded by screen walls. The waste bag cartridge stores a plurality of waste bags stacked on top of each other or in a roll, connected temporarily in sequence. Each waste bag has multiple connecting tabs (Sphere-tabs and T-bar tabs) affixed to the bag. The Sphere-tabs align with and insert into a slot in the rails such that the tabs may only exit the slot from the top of the rails. The T-bar tabs are inserted into the tab retainer posts. The rails, tab retainer posts and waste bag cartridge are held in an aligned arrangement via either a clasping mechanism or a surrounding structure which inhibits the movement of both elements. Waste bags are pulled up from the waste bag cartridge to the top of the rails and held in place via at least one hook. | 02-26-2015 |