Patents Assigned to CENOVUS ENERGY INC.
  • Publication number: 20180291293
    Abstract: Low vapor pressure hydrocarbon blends are provided, comprising miscible and separable hydrocarbon fractions. A high-octane low-boiling point diluent fraction may be combined with a high-boiling point bitumen fraction. In select embodiments, and the blend may have a viscosity of less than about 350 cSt and a density of less than about 940 kg/m3 over a temperature range of from 7.5° C. to 18.5° C. After transportation, for example by pipeline, the high-octane low-boiling point diluent fraction may be recovered from the blend, and may for example be used as a high-octane gasoline blendstock.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 11, 2018
    Applicant: Cenovus Energy Inc.
    Inventors: Manuel F. Gonzalez, Timothy Michael Koskowich, Eusebio Palmisano
  • Publication number: 20180216449
    Abstract: A method and system in which foams are used (instead of, or in addition to, NCG) to maintain pressure in a mature chamber during blowdown operations of a SAGD process or other enhanced oil recovery process. The foam occupies the depleted void space within the mature chamber after injection ceases, maintaining pressure, and improving blowdown performance. This use of the foam in the method and system also improves the performance of less mature chambers that are being operated at higher pressure adjacent to the mature chamber in blowdown. Foaming agents, such as metal carbonates, bicarbonates, and hydroxides, surfactants or any other colloidal foams, aerosols, hydrosols, emulsions or dispersions can be utilized. The method and system can be utilized in conjunction with other known art, such as heat scavenging in the chamber, or enhanced oil recovery utilizing foams, to displace oil in the chamber.
    Type: Application
    Filed: June 16, 2017
    Publication date: August 2, 2018
    Applicants: CONOCOPHILLIPS COMPANY, Cenovus Energy Inc.
    Inventors: Amos Benzvi, Jason Abbate, Thomas J. Wheeler, Siluni L. Wickramathilaka-Gamage, Harbir Chhina, Alexander E. Filstein, Brent D. Seib
  • Patent number: 9845669
    Abstract: For hydrocarbon recovery from a reservoir of bituminous sands, steam and a multi-function agent are injected into the reservoir for mobilizing bitumen in the reservoir to form a fluid comprising hydrocarbons, water and the multi-function agent. The fluid is produced from the reservoir. The multi-function agent may comprise an organic molecule that reduces viscosity of oil and the interfacial tension between oil and water or a gas or rock in the reservoir, and has a partition coefficient favoring solubility in oil over water and a partial pressure in the reservoir allowing the organic molecule to be transported with steam as a vapor. The multi-function agent may comprise a solvent for reducing viscosity of oil and a surfactant for reducing interfacial tension, where both the solvent and surfactant are transportable with steam as vapor.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: December 19, 2017
    Assignee: Cenovus Energy Inc.
    Inventors: Ryan Miller, Khalil Zeidani
  • Patent number: 9738837
    Abstract: The present disclosure provides a process and system for removing at least a portion of organosulfur compounds from an oil sands produced gas and transferring the organosulfur compounds to a bitumen-based liquid. One example of the system includes an absorber to contact the gas with an amount of liquid hydrocarbon sufficient to absorb some of the organosulfur compounds, producing an organosulfur enriched liquid hydrocarbon. The system includes a separator that accepts the organosulfur enriched liquid hydrocarbon and an emulsion that includes water and the bitumen-based liquid. The separator separates produced water from a bitumen-based mixture of organosulfur enriched liquid hydrocarbon and bitumen-based liquid. The system adds an amount of additional liquid hydrocarbon to separate the produced water from the bitumen-based mixture when the amount of liquid hydrocarbon added is less than the amount of liquid hydrocarbon needed to separate the produced water from the bitumen-based mixture.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: August 22, 2017
    Assignee: Cenovus Energy, Inc.
    Inventors: Kelly M. Bell, Russell H. Wickes
  • Patent number: 9732564
    Abstract: An aircraft-transportable platform component for supporting a drilling rig includes a buoyant body supported by a frame and lifting members coupled to the frame for engagement by an aircraft. A portion of the frame protrudes from an underside surface of the frame for anchoring the platform component in unstable ground. The buoyant body maintains a top surface of the aircraft-transportable platform component above the unstable ground.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: August 15, 2017
    Assignee: Cenovus Energy Inc.
    Inventors: Dustin Jack, Alan Krawchuk, Jay Blythman, Robert Chalifoux, Doug Howdle, Murray Reay, Frank Yuzyk
  • Patent number: 9664022
    Abstract: The present disclosure describes a recovery process using injector and producer wells, each well having means for varying the axial resistance to fluid flow to provide a complementary first and second annular axial fluid flow resistance profile. The recovery mechanism includes a gravity drainage component and also includes a convective flow mechanism which operate concurrently.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: May 30, 2017
    Assignee: Cenovus Energy Inc.
    Inventor: Arun Sood
  • Patent number: 9562424
    Abstract: A method of producing heated water from a reservoir having a hot bitumen-depleted zone adjacent to an aqueous mobile zone. The method includes generating fluid communication between the aqueous mobile zone and the hot bitumen-depleted zone. The method further includes driving water from the aqueous mobile zone through a portion of the hot bitumen-depleted zone to heat the water to produce heated water from a heated water production well.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: February 7, 2017
    Assignee: Cenovus Energy Inc.
    Inventors: Mark Bilozir, Christian Canas, Carlos Emilio Perez Damas, Arun Sood
  • Patent number: 9447643
    Abstract: An aircraft-transportable platform component for supporting a drilling rig includes a buoyant body supported by a frame and lifting members coupled to the frame for engagement by an aircraft. A portion of the frame protrudes from an underside surface of the frame for anchoring the platform component in unstable ground. The buoyant body maintains a top surface of the aircraft-transportable platform component above the unstable ground.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: September 20, 2016
    Assignee: CENOVUS ENERGY INC.
    Inventors: Dustin Jack, Alan Krawchuk, Jay Blythman, Robert Chalifoux, Doug Howdle, Murray Reay, Frank Yuzyk
  • Patent number: 9284827
    Abstract: A process for hydrocarbon recovery performs a steam assisted gravity drainage (SAGD) operation by injecting steam in a steam injection well of a SAGD well pair and continuing to inject steam to establish fluid communication between the steam injection well and an oxidizing gas injection well that includes an oxidizing gas injection well segment that is spaced generally above the steam injection well segment, and producing hydrocarbons from a hydrocarbon production well of the SAGD well pair, the hydrocarbon production well including a generally horizontal production well segment disposed generally parallel to and vertically below a generally horizontal steam injection well segment of the steam injection well such that the steam injection well segment is disposed generally vertically between the production well segment and the oxidizing gas injection well segment.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: March 15, 2016
    Assignee: Cenovus Energy Inc.
    Inventors: Christian Canas, Simon Gittins, Subodh Gupta, Arun Sood, Xinjie Wu
  • Patent number: 9206359
    Abstract: A method of upgrading a heteroatom-containing hydrocarbon feed by removing oxidized-heteroatom contaminants is disclosed. The method includes contacting the oxidized-heteroatom-containing hydrocarbon feed with a caustic and a selectivity promoter, and removing the heteroatom contaminants from the heteroatom-containing hydrocarbon feed.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: December 8, 2015
    Assignees: AUTERRA, INC., CENOVUS ENERGY INC.
    Inventors: Kyle E. Litz, Jennifer L. Vreeland, Jonathan P. Rankin, Mark N. Rossetti, Tracey M. Jordan, Trent A. McCaskill, Erica Shipley, Sarah Clickner
  • Publication number: 20150337208
    Abstract: A hydrocarbon product having at least 0.1 grams per gram of hydrocarbon product having a boiling range distribution from an initial boiling point to approximately 739° C. wherein the hydrocarbon products are further characterized by an infrared spectroscopy reference peak, centered between approximately 1445 cm?1 and 1465 cm?1, a first infrared spectroscopy peak between approximately 1310 cm?1 and 1285 cm?1, wherein the height of the first infrared spectroscopy peak is at least approximately 28% of the height of the infrared spectroscopy reference peak and a second infrared spectroscopy peak between approximately 1135 cm?1 and 1110 cm?1, wherein the height of the second infrared spectroscopy peak is at least approximately 22% of the height of the infrared spectroscopy reference peak.
    Type: Application
    Filed: May 23, 2014
    Publication date: November 26, 2015
    Applicants: AUTERRA, INC., CENOVUS ENERGY INC.
    Inventors: Kyle E. Litz, Jonathan P. Rankin
  • Patent number: 9120983
    Abstract: The invention relates to treating a hydrocarbon-comprising emulsion with an aqueous component to form an aqueous component-treated emulsion, and processing the treated emulsion to recover the hydrocarbon. The aqueous component is contacted with the hydrocarbon-comprising emulsion in a manner and proportion so as to promote coalescence of the like phases while minimizing shear, which results in a decreased viscosity of the emulsion and a shift away from the emulsion inversion region toward a water-continuous state.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: September 1, 2015
    Assignee: Cenovus Energy Inc.
    Inventors: Russell H Wickes, Mike Wasylyk, Bailey R Gould
  • Patent number: 8985231
    Abstract: 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.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: March 24, 2015
    Assignee: Cenovus Energy, Inc.
    Inventors: Simon Gittins, Harbir Chhina, Katherine Stavropoulos, Xiaohuan Liu, Alvin Winestock
  • Publication number: 20140251596
    Abstract: The present disclosure describes a single well predominantly gravity-dominated recovery process for producing viscous hydrocarbons from a subterranean oil sands formation. The process operates a single vertical or inclined well within a formation, the wellbore having an injection means and a production means, the injection means being positioned in the wellbore closer to the surface than the production means. The process provides an area of high mobility adjacent the production means. A mobilizing fluid is injected through the injection means into the formation to mobilize the viscous hydrocarbons in the formation while substantially concurrently producing hydrocarbons through the production means. The gravity dominated process may be SAGD and the present process may be a single vertical or inclined well SAGD process.
    Type: Application
    Filed: March 5, 2013
    Publication date: September 11, 2014
    Applicant: CENOVUS ENERGY INC.
    Inventors: Simon D. GITTINS, Subodh GUPTA, Arun SOOD
  • Publication number: 20140251608
    Abstract: The present disclosure describes a single well predominantly gravity-dominated recovery process for producing viscous hydrocarbons from a subterranean oil sands formation. The process operates a single vertical or inclined well within a formation, the wellbore having an injection means and a production means, the injection means being positioned in the wellbore closer to the surface than the production means. The process provides an area of high mobility adjacent the production means. A mobilizing fluid is injected through the injection means into the formation to mobilize the viscous hydrocarbons in the formation while substantially concurrently producing hydrocarbons through the production means. The gravity dominated process may be SAGD and the present process may be a single vertical or inclined well SAGD process.
    Type: Application
    Filed: March 3, 2014
    Publication date: September 11, 2014
    Applicant: CENOVUS ENERGY INC.
    Inventors: Simon D. GITTINS, Subodh GUPTA, Arun SOOD
  • Publication number: 20140216738
    Abstract: Solvent may be injected into a hydrocarbon reservoir at an increasingly elevated vertical level to allow vapor of the solvent to contact and mobilize viscous hydrocarbons in the reservoir, for producing mobilized hydrocarbons. Solvent may be injected into a mobile zone below a viscous hydrocarbon zone, to allow solvent vapor to ascend to mobilize viscous hydrocarbons in the viscous hydrocarbon zone. A vertical or slanted injection well may be used to inject the solvent into the reservoir, and a production well spaced horizontally apart from the injection well may be used to produce fluids from the reservoir. A bottom-up solvent-aided process may comprise injecting water and liquid solvent into the mobile zone, and then injecting heated water and solvent into the mobile zone.
    Type: Application
    Filed: December 10, 2013
    Publication date: August 7, 2014
    Applicant: CENOVUS ENERGY INC.
    Inventors: SUBODH GUPTA, SIMON GITTINS
  • Publication number: 20140202683
    Abstract: An ultrasonic device and system is provided for specific application to unloading non-gaseous production (typically mineralized water which may or may not be associated with produced solids and/or hydrocarbon liquids) from gas producing wells. In one embodiment, the system comprises an ultrasonic particle generator bank, including a transformer as needed (geometry of bank varies depending on down hole configurations) with multiple ultrasonic sources for redundancy/longevity and particle formation rate control. The multiple ultrasonic sources may be powered electrically from the surface, or by other means, with a length management conveyance system. The ultrasonic sources may be buoyed at substantially optimal depth below the surface of the non-gaseous production being particlized.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 24, 2014
    Applicant: Cenovus Energy Inc.
    Inventors: Cindy Wolfe, Ken Lowe
  • Publication number: 20140203099
    Abstract: An ultrasonic dispersion system for dispersing fluid collected from a wellbore during hydrocarbon production is disclosed. The system comprises a holding tank for containing a fluid collection; a fluid intake in communication with the holding tank for input of fluid collected from a wellbore; and an air intake in communication with the holding tank. An ultrasonic generator bank positioned in the holding tank for contact with the fluid collection is used for particlizing the fluid collection to generate an air/particle mixture with the air input into the holding tank. The ultrasonic generator bank comprises an ultrasonic source positioned below the surface of the fluid collection for particlizing at least a portion of the fluid collection; a power source for providing power to the ultrasonic generator bank; and an outlet in an upper region of the holding tank for exhausting the air/particle mixture from the holding tank.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 24, 2014
    Applicant: Cenovus Energy Inc.
    Inventors: Cindy Wolfe, Ken Lowe
  • Patent number: 8770281
    Abstract: 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.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: July 8, 2014
    Assignee: Cenovus Energy Inc.
    Inventors: John E. Arthur, Simon D. Gittins, Harbir S. Chhina
  • Publication number: 20130112392
    Abstract: A method, apparatus and system for temperature control of a fluid in an air cooled heat exchanger (ACHE). Certain embodiments may involve measuring a discharge fluid temperature of a fluid discharged from the ACHE, reducing a fan speed and at least partially closing an air intake and/or an air exhaust of the ACHE when the discharge fluid temperature meets a discharge fluid temperature criterion to reduce cooling of the fluid in a tube bundle of the ACHE, measuring a plenum chamber air temperature, and injecting heated air proximate the tube bundle when the plenum chamber air temperature meets a plenum air temperature criterion to avoid overcooling of the tube bundle fluid.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 9, 2013
    Applicant: Cenovus Energy Inc.
    Inventor: Cenovus Energy Inc.