Auterra Inc. and Cenovus Energy Inc. | Date: 2016-03-25
Systems, methods and compositions for reducing the heteroatom content of hydrocarbon feed using transition metal complexes and adsorption techniques. The transition metal complexes include titanyl, hafnyl and zirconyl complexes activated using one or more hydroperoxides or peracids. The activated adsorbents are incorporated into one or more vessels as an adsorption bed for adsorbing the heteroatoms present in hydrocarbon feeds. The systems, methods and compositions separate the heteroatoms passed through the system by contacting the adsorption compositions with the heteroatoms of the hydrocarbon feed, adsorbing the heteroatom to the adsorption material, further allowing for the retrieval of a hydrocarbon product having a reduced heteroatom content.
Auterra Inc. and Cenovus Energy Inc. | Date: 2014-05-27
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.
Cenovus Energy Inc. | Date: 2015-04-06
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 favouring solubility in oil over water and a partial pressure in the reservoir allowing the organic molecule to be transported with steam as a vapour. 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 vapour.
Cenovus Energy Inc. | Date: 2016-06-30
Methods for preparing, converting, and/or transporting bitumen are provided. Asphaltene prills, prilling processes, and converted bitumen suitable for transport are disclosed. One method for preparing bitumen for transport comprises: separating asphaltene from the bitumen to generate a deasphalted oil and asphaltene; separating the asphaltene into a first asphaltene fraction and a second asphaltene fraction, the first asphaltene fraction being less soluble in deasphalted oil and the second asphaltene fraction being more soluble in deasphalted oil; and forming an asphaltene prill comprising an inner core comprising the second asphaltene fraction and an outer layer comprising the first asphaltene fraction. Asphaltene prills disclosed herein may comprise an inner core comprising an asphaltene fraction having more solubility in deasphalted oil, and an outer layer comprising an asphaltene fraction having less solubility in deasphalted oil. Methods for the transport of bitumen via a pipeline are disclosed.
Cenovus Energy Inc. | Date: 2015-03-12
A method of well completion includes: introducing a hydraulic set liner hanger assembly into a cased main bore, the hydraulic set liner hanger assembly comprising a first pipe assembly and a second pipe assembly coupled to the hydraulic set liner hanger assembly, the first pipe assembly comprising a first seal coupled to a distal end of a first pipe, the second pipe assembly comprising a second seal coupled to a distal end of a second pipe, the second pipe being longer than the first pipe and the second seal having a larger outer diameter than the first seal; advancing the hydraulic set liner hanger assembly through the cased main bore, the second seal abutting a deflecting surface of a hollow diverter located in the cased main bore and being directed into a second lateral bore to provide a seal between a second liner received in the second lateral bore and the second pipe, the first seal passing through the hollow diverter to provide a seal between a first liner received in a first lateral bore and the first pipe, the deflecting surface of the hollow diverter being located adjacent to the second lateral bore; and setting the hydraulic set liner in the cased main bore.
Cenovus Energy Inc. | Date: 2016-08-19
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.
Cenovus Energy Inc. | Date: 2014-12-04
An apparatus for hydrocarbon recovery from a production well includes a pump, a motor for driving the pump, and an intake and gas separator between the motor and the pump, in the production well, such that the gas separator is coupled to the pump and is located closer to the wellhead than the motor and the intake is disposed between the gas separator and the motor. A production conduit extends inside the production well casing, from an outlet of the pump to a second end at the wellhead to facilitate pumping of liquid from a discharge outlet of the gas separator, through the production well casing, to the wellhead, and tubing is in fluid communication with a gas outlet of the gas separator and extends to expel gas received from the gas separator, at a location above a liquid level in the production well.
Cenovus Energy Inc. | Date: 2015-04-28
A process for hydrocarbon recovery from a hydrocarbon-bearing formation utilizing an injection well for the injection of a mobilizing and displacing fluid, such as steam, into the formation and a production well, spaced from the injection well, and through which hydrocarbon is recovered. The process includes injecting a surfactant and a gas into the production well for a first period of time to thereby emplace or form foam to an extent sufficient to modify the path of flow in an inter-well region between the injection well and the production well and in an area spaced from the inter-well region of the reservoir, which area is in fluid communication with at least one of the injection well and the production well. The process also includes injecting fluid into the injection well to cause the flow of hydrocarbon in the formation and recovering the hydrocarbon through the production well.
Cenovus Energy Inc. | Date: 2015-08-27
The present disclosure describes a method of recovering viscous hydrocarbons from a subterranean formation using a gravity dominated recovery process with a group of wells, the recovery process incorporating an interwell recovery phase. The group of wells is initially operated independently to establish hydraulic communication between two or more wells in the group. Once hydraulic communication is established, injection of mobilizing fluid and production of hydrocarbons continues in at least one well within the group with an excess amount of mobilizing fluid being injected into the well. At the same time, production only continues in at least one well within the group, without any injection of mobilizing fluid. The wells in the group are spaced closer together than in conventional recovery processes. The recovery process may be SAGD.
Cenovus Energy Inc. | Date: 2015-08-31
The present disclosure provides a method for improved production of hydrocarbons along the length of a horizontal well where non-uniform fluid chambers have formed in the reservoir. The present method distributes fluid along the length of a substantially horizontal wellbore that is located within a reservoir such that different recovery processes, or distinct phases of a given recovery process, operating proximally or adjacently within that same reservoir, and in hydraulic communication with each other within that reservoir, are managed concurrently along the single wellbore.