Patents Assigned to EnCana Corporation
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Patent number: 10520249Abstract: A process for separating a mixed or raw gas feed to produce a dry gas product and a hydrocarbon liquid product is provided. The process comprises scrubbing heavier hydrocarbon components from the gas feed to produce a lighter ends gas stream and a heavier ends liquid stream; cooling the lighter ends gas stream and separating the cooled lighter ends gas stream into a cold liquid stream and the dry gas product; and using the cold liquid stream to assist in scrubbing the heavier hydrocarbon components from the gas feed.Type: GrantFiled: November 16, 2016Date of Patent: December 31, 2019Assignee: ENCANA CORPORATIONInventor: Stephen Craig Horne
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Patent number: 8851179Abstract: A process and process line is provided for preparing a friction-reduced hydraulic fracturing fluid at a central location which can be readily transported to an oil or gas well in a formation at a well site, comprising: preparing a mixture of polymer and water at the central location by shearing the polymer in the water in a high shear environment to create the friction-reduced hydraulic fracturing fluid; pumping the friction-reduced hydraulic fracturing fluid through a series of pumps and pipelines to the well site; and injecting the hydraulic fracturing fluid into the oil or gas well at a pressure sufficient to cause fracturing of the formation.Type: GrantFiled: December 21, 2012Date of Patent: October 7, 2014Assignee: Encana CorporationInventors: Grant Todd DeFosse, Lois Louise McCorriston
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Publication number: 20130319668Abstract: An assembly and process for fracturing, stimulating and producing a wellbore having a plurality of oil or gas producing zones is provided comprising introducing into the well the pumpable seat assembly comprising a generally cylindrical tube having an outer diameter and an inner diameter with an upper end forming a ball seat; setting the pumpable seat assembly below an oil or gas producing zone to be produced; introducing a dissolvable ball into the well, said dissolvable ball having a sufficiently large enough outer circumference so that it can sit on the ball seat and temporarily restrict a flow of fluids to the portion of the wellbore located below the pumpable seat assembly; and fracturing the oil and gas producing zone to stimulate oil or gas production; whereby the biodegradable ball is configured to dissolve within a predetermined period of time so that when it dissolves any oil or gas produced from zones below the pumpable seat assembly can flow through the cylindrical tube.Type: ApplicationFiled: May 16, 2013Publication date: December 5, 2013Applicant: Encana CorporationInventors: SAM TSCHETTER, ARMIN JAHANGIRI
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Publication number: 20130319682Abstract: A process and an apparatus for use in fluid fracturing of a well and the like is provided, the apparatus being a pumpable seat assembly for temporarily sealing a well casing comprising a generally cylindrical tube having an outer diameter and an inner diameter; a upper slip assembly and a lower slip assembly mounted on such cylindrical tube and adapted to selectively engage the well casing to anchor the pumpable seat assembly; an elastomeric packing element mounted on said cylindrical tube between the upper slip assembly and the lower slip assembly; and a dissolvable member positioned within the generally cylindrical tube for temporarily restricting a flow of fluids to the portion of the wellbore located below the pumpable seat assembly.Type: ApplicationFiled: May 23, 2013Publication date: December 5, 2013Applicant: ENCANA CORPORATIONInventors: Sam TSCHETTER, Armin JAHANGIRI
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Publication number: 20130312870Abstract: A compressed natural gas (CNG) fueling station module is provided. The module includes a vault for below grade installation, the vault comprising a compressor for compressing natural gas, a storage tank for holding compressed natural gas, a dispenser for dispensing compressed natural gas, each of the compressor, the storage tank and the dispenser in fluid communication with each other. Secured to the vault is a canopy for above grade orientation, the canopy comprising a CNG fuel nozzle in fluid communication with the dispenser and an interface for allowance purchase of the CNG.Type: ApplicationFiled: March 15, 2013Publication date: November 28, 2013Applicant: EnCana CorporationInventors: Paul D. Evans, Mark Epp, Sean Marte, Jan Kroman, Michael L. Farrar
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Patent number: 8518159Abstract: A process and process line for treating water containing hydrogen sulfide for use as a hydraulic fracturing fluid is provided, to practice the following steps: separating a gaseous portion containing hydrogen sulfide from the water to form a first degassed water product; introducing the first degassed water product into a mechanical gas stripping unit and treating the first degassed water product with a stripper gas; recovering from the mechanical gas stripping unit at least one overhead vapor stream containing hydrogen sulfide and a stripped water stream as a bottom stream; degassing the stripped water stream in a degassing tank to produce a second degassed water product; and treating the second degassed water product with a hydrogen sulfide scavenger to produce a sweet water product having substantially reduced hydrogen sulfide.Type: GrantFiled: October 6, 2011Date of Patent: August 27, 2013Assignee: Encana CorporationInventors: Lois Louise McCorriston, Jennifer N. Pond
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Publication number: 20130112419Abstract: A process and process line is provided for preparing a friction-reduced hydraulic fracturing fluid at a central location which can be readily transported to an oil or gas well in a formation at a well site, comprising: preparing a mixture of polymer and water at the central location by shearing the polymer in the water in a high shear environment to create the friction-reduced hydraulic fracturing fluid; pumping the friction-reduced hydraulic fracturing fluid through a series of pumps and pipelines to the well site; and injecting the hydraulic fracturing fluid into the oil or gas well at a pressure sufficient to cause fracturing of the formation,Type: ApplicationFiled: December 21, 2012Publication date: May 9, 2013Applicant: ENCANA CORPORATIONInventor: ENCANA Corporation
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Patent number: 8360152Abstract: A process and process line is provided for preparing a friction-reduced hydraulic fracturing fluid at a central location which can be readily transported to an oil or gas well in a formation at a well site, comprising: preparing a mixture of polymer and water at the central location by shearing the polymer in the water in a high shear environment to create the friction-reduced hydraulic fracturing fluid; pumping the friction-reduced hydraulic fracturing fluid through a series of pumps and pipelines to the well site; and injecting the hydraulic fracturing fluid into the oil or gas well at a pressure sufficient to cause fracturing of the formation.Type: GrantFiled: November 27, 2009Date of Patent: January 29, 2013Assignee: Encana CorporationInventors: Grant DeFosse, Lois McCorriston
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Patent number: 8235112Abstract: A gas flow system for removing a liquid from a well bore and allowing for gas production is provided. The gas flow system comprises a casing in the well bore for allowing flow of the liquid and gas; a tubing string in the casing for allowing flow of the liquid and gas; pressure measurement devices for use in determining a rate of liquid influx into the well bore; a casing control valve moveable between various positions ranging from fully open to fully closed for controlling flow through the casing; a tubing control valve moveable between various positions ranging from fully open to fully closed for controlling flow through the tubing; and flow measurement devices for determining the rate of flow through the tubing and the total rate of flow.Type: GrantFiled: April 29, 2011Date of Patent: August 7, 2012Assignee: EnCana CorporationInventors: Kenneth W. Lowe, Javier Alfonso Becaria Valero, Clarence Robert Dyck
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Patent number: 8215387Abstract: The invention provides methods for natural gas and oil recovery, which include the use of air injection and in situ combustion in natural gas reservoirs to facilitate production of natural gas and heavy oil in gas over bitumen formations.Type: GrantFiled: March 22, 2012Date of Patent: July 10, 2012Assignee: Encana CorporationInventors: Larry Weiers, Ben Nzekwu
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Patent number: 8167040Abstract: The invention provides methods for natural gas and oil recovery, which include the use of air injection and in situ combustion in natural gas reservoirs to facilitate production of natural gas and heavy oil in gas over bitumen formations.Type: GrantFiled: March 7, 2011Date of Patent: May 1, 2012Assignee: Encana CorporationInventors: Larry Weiers, Ben Nzekwu
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Publication number: 20120085236Abstract: A process and process line for treating water containing hydrogen sulfide for use as a hydraulic fracturing fluid is provided, to practice the following steps: separating a gaseous portion containing hydrogen sulfide from the water to form a first degassed water product; introducing the first degassed water product into a mechanical gas stripping unit and treating the first degassed water product with a stripper gas; recovering from the mechanical gas stripping unit at least one overhead vapor stream containing hydrogen sulfide and a stripped water stream as a bottom stream; degassing the stripped water stream in a degassing tank to produce a second degassed water product; and treating the second degassed water product with a hydrogen sulfide scavenger to produce a sweet water product having substantially reduced hydrogen sulfide.Type: ApplicationFiled: October 6, 2011Publication date: April 12, 2012Applicant: ENCANA CORPORATIONInventors: LOIS LOUISE McCORRISTON, JENNIFER N. POND
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Publication number: 20110272365Abstract: A method of removing hydrogen sulfide from water is provided, comprising providing water containing a first amount of hydrogen sulfide and having a first pH; adding a stripper gas to the water to form a mixture; agitating the mixture; and separating a gaseous portion from the mixture to form a water product, the water product containing a second amount of hydrogen sulfide that is less than the first amount of hydrogen sulfide.Type: ApplicationFiled: May 7, 2010Publication date: November 10, 2011Applicant: ENCANA CORPORATIONInventors: Grant DeFosse, Lois Louise McCorriston
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Patent number: 7954547Abstract: A gas flow system for removing a liquid from a well bore and allowing for gas production is provided. The gas flow system comprises a casing in the well bore for allowing flow of the liquid and gas; a tubing string in the casing for allowing flow of the liquid and gas; pressure measurement devices for use in determining a rate of liquid influx into the well bore; a casing control valve moveable between various positions ranging from fully open to fully closed for controlling flow through the casing; a tubing control valve moveable between various positions ranging from fully open to fully closed for controlling flow through the tubing; and flow measurement devices for determining the rate of flow through the tubing and the total rate of flow.Type: GrantFiled: September 3, 2008Date of Patent: June 7, 2011Assignee: EnCana CorporationInventors: Kenneth W. Lowe, Javier Alfonso Becaria Valero, Clarence Robert Dyck
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Patent number: 7900701Abstract: The invention provides methods for natural gas and oil recovery, which include the use of air injection and in situ combustion in natural gas reservoirs to facilitate production of natural gas and heavy oil in gas over bitumen formations.Type: GrantFiled: January 13, 2006Date of Patent: March 8, 2011Assignee: Encana CorporationInventors: Larry Weiers, Ben Nzekwu
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Publication number: 20100051267Abstract: A gas flow system for removing a liquid from a well bore and allowing for gas production is provided. The gas flow system comprises a casing in the well bore for allowing flow of the liquid and gas; a tubing string in the casing for allowing flow of the liquid and gas; pressure measurement devices for use in determining a rate of liquid influx into the well bore; a casing control valve moveable between various positions ranging from fully open to fully closed for controlling flow through the casing; a tubing control valve moveable between various positions ranging from fully open to fully closed for controlling flow through the tubing; and flow measurement devices for determining the rate of flow through the tubing and the total rate of flow.Type: ApplicationFiled: September 3, 2008Publication date: March 4, 2010Applicant: EnCana CorporationInventors: Kenneth W. Lowe, Javier Alfonso Becaria Valero, Clarence Robert Dyck
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Patent number: 7556099Abstract: A method for recovering hydrocarbons from a subterranean reservoir by operating a first injector-producer well pair under a substantially gravity-controlled recovery process, the first injector-producer well pair forming a first mobilized zone, operating a second injector-producer well pair under a substantially gravity-controlled recovery process, the second injector-producer well pair forming a second mobilized zone, the first injector-producer well pair and the second injector-producer well pair together being the adjacent well pairs, providing an infill well in a bypassed region, the bypassed region formed between the adjacent well pairs when the first mobilized zone and the second mobilized zone merge to form a common mobilized zone, operating the infill well to establish fluid communication between the infill well and the common mobilized zone, operating the infill well and the adjacent well pairs under a substantially gravity-controlled recovery process, and recovering hydrocarbons from the infill wellType: GrantFiled: June 13, 2007Date of Patent: July 7, 2009Assignee: Encana CorporationInventors: John E. Arthur, Simon D. Gittins, Harbir S. Chhina
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Publication number: 20090130732Abstract: A process for the conversion of heavy oil or bitumen to methane by chemical oxidation and bioconversion.Type: ApplicationFiled: October 14, 2008Publication date: May 21, 2009Applicant: EnCana CorporationInventors: Phillip M. Fedorak, Julia M. Foght Robinson, Murray R. Gray
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Patent number: 7516789Abstract: 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.Type: GrantFiled: January 13, 2006Date of Patent: April 14, 2009Assignee: EnCana CorporationInventors: Harbir S. Chhina, Ben Nzekwu
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Patent number: D675340Type: GrantFiled: May 3, 2012Date of Patent: January 29, 2013Assignee: EnCana CorporationInventors: Paul D. Evans, Mark Epp, Sean Marte, Jan Kroman, Michael L. Farrar