Spence, CA
Daniel J. Spence, Ottawa CA
Patent application number | Description | Published |
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20090314774 | ARTICLE STACKING APPARATUS - An apparatus for receiving and storing a plurality of nestable articles comprising an elongate tubular receptacle for receiving and storing the plurality of articles as a nested stack of articles. The receptacle has an open article-receiving end and a partially open other end for retaining the nested stack of articles in the receptacle. Attachment means are provided on an exterior surface of the receptacle for pivotally suspending the receptacle from a waste container for rotation relative to the waste container about a pivot point. In use, the receptacle is held on the waste container with the open article-receiving end positioned above the partially open other end. Upon rotation of the receptacle about the pivot point so that the article-receiving end is positioned below the partially open other end, the nested stack of articles are removable under gravity from the receptacle through the open article-receiving end. | 12-24-2009 |
Dean Spence, Sylvan Lake CA
Patent application number | Description | Published |
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20110127045 | Method of Sealing Annular Space Between Inner and Outer Upright Tubes - A method of sealing annular space between an upright outer tube and an upright inner tube extending within the outer tube along an axial direction thereof involves pouring a liquid seal material into the annular space onto a support member fitted within the annular space between the outer tube and the inner tube in a manner substantially closing around the inner tube. The liquid seal material is poured in an amount sufficient to fill radial space between the inner tube and the outer tube fully around the inner tube, the liquid seal material is then cured to form an annular seal between the inner tube and the outer tube. The method is useful in sealing of the annular spacing between the surface and production casing of a gas well and installing a venting system to facilitate controlled venting of the annular space. | 06-02-2011 |
20120018142 | Coil Tubing Cable Head with Tool Release, Fluid Circulation and Cable Protection Features - A cable head for use with coiled tubing electric line in well operations has upper and lower housings attached by a shearable connection to allow release of the lower housing and any downhole equipment carried thereon. A piston is slidable within the housing by fluid pumped through the coil tooling to release a locking mechanism that otherwise prevents the shearing disconnect of the housings. Flow ports in the housing to allow pumping or circulation of fluid through the cable head are positioned to remain continuously open, regardless of the piston position, to maximize the range of flow rates over which fluid can be circulated. The electric line of coiled tubing is only stripped of its armor past sealed receipt thereof in a cable passage below the flow path of the fluid, thereby avoiding exposure of the conductor to the fluid to minimize the potential for damage or failure. | 01-26-2012 |
Jeffrey W. Spence, Calgary CA
Patent application number | Description | Published |
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20110108276 | APPARATUS AND METHOD FOR CREATING PRESSURE PULSES IN A WELLBORE - In accordance with a broad aspect of the present invention there is provided an apparatus for wellbore fluid treatment, comprising: a body with a lower end, an upper end, an exterior surface and an interior surface defining a long bore open at the upper end; an outlet port spaced from the upper end, the outlet port permitting the communication of fluids between the long bore and the exterior surface; and, a die in the long bore between the upper end and the outlet port, the die being substantially immovable within the long bore and having an inner open diameter in which a plug can land to create a seal in the long bore before passing through the inner open diameter. | 05-12-2011 |
Jonathan Spence, Edmonton CA
Patent application number | Description | Published |
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20090321326 | PRIMARY FROTH RECYCLE - A process for extracting bitumen from oil sand, comprising: mixing oil sand with process water to produce an oil sand slurry containing bitumen, sand, water and entrained air; conditioning the oil sand slurry; optionally flooding the conditioned oil sand slurry with flood water to dilute the slurry, if required; introducing the slurry into a primary separation vessel wherein separate layers of primary bitumen froth, middlings and sand tailings are formed; removing a portion of the primary bitumen froth from the primary separation vessel and recycling the portion of primary bitumen froth to that step of the process upstream of the primary separation vessel to join and mix with the feed stream moving to the primary separation vessel; and thereafter retaining said feed stream in said primary separation vessel to produce primary bitumen froth. | 12-31-2009 |
20110062090 | FEEDWELL FOR A GRAVITY SEPARATION VESSEL - A feedwell for a gravity separation vessel for introducing a feed stream such as oil sand slurry to the gravity separation vessel is provided comprising a walled member having an upper perimeter edge, a lower perimeter edge and a substantially continuous wall extending from the upper perimeter edge to the lower perimeter edge; an inlet for introducing the feed stream into the walled member positioned adjacent the substantially continuous wall; and a bottom floor having an opening and extending generally beneath the lower perimeter edge; whereby a perimeter of the opening is less than a perimeter of the walled member. | 03-17-2011 |
20130256196 | POST-CONDITIONING OIL SAND SLURRY BLENDING FOR IMPROVED EXTRACTION PERFORMANCE - The invention is directed to a process for extracting bitumen from poor oil sand ore involving mixing the poor oil sand ore with heated water to produce a slurry, and conditioning the slurry to yield a poor ore stream. In a separate train, good oil sand ore is mixed with heated water to produce a slurry, and conditioned to yield a good ore stream. Both the conditioned poor ore and good ore streams are combined in specified proportions to yield a blended slurry which is then fed to a primary separation vessel to produce primary bitumen froth. | 10-03-2013 |
20140014462 | FEEDWELL FOR A GRAVITY SEPARATION VESSEL - A feedwell for a gravity separation vessel for introducing a feed stream such as oil sand slurry to the gravity separation vessel is provided comprising a walled member having an upper perimeter edge, a lower perimeter edge and a substantially continuous wall extending from the upper perimeter edge to the lower perimeter edge; an inlet for introducing the feed stream into the walled member positioned adjacent the substantially continuous wall; and a bottom floor having an opening and extending generally beneath the lower perimeter edge; whereby a perimeter of the opening is less than a perimeter of the walled member. | 01-16-2014 |
20140054231 | CENTRIFUGE PROCESS FOR DEWATERING OIL SANDS TAILINGS - A process for dewatering oil sands tailings is provided, comprising providing a tailings feed having a solids content in the range of about 10 wt % to about 45 wt %; adding a flocculant to the tailings feed and mixing the tailings feed and flocculant to form flocs; and centrifuging the flocculated tailings feed to produce a centrate having a solids content of less than about 3 wt % and a cake having a solids content of at least about 50 wt %. | 02-27-2014 |
20140097126 | BITUMEN REMOVAL FROM TAILINGS CENTRIFUGE CENTRATE - A process for removing residual bitumen from oil sands tailings is provided, comprising optionally diluting the tailings with sufficient water to yield a tailings feed having a solids content in the range of about 18 wt % to about 36 wt %; adding one or both of a coagulant and a flocculant to the tailings feed to form a centrifuge feed; centrifuging the centrifuge feed to produce a cake and a centrate having a solids content of less than about 3 wt %; introducing the centrate into a flotation device so that bitumen froth and cleaned centrate are formed; recycling the cleaned centrate as dilution water or discharging the cleaned centrate to a tailings pond, and further processing the bitumen froth from the flotation device either by returning it to the primary Extraction feed or by treating it in a new or existing froth treatment plant. | 04-10-2014 |
Rupert Spence, Kingston CA
Patent application number | Description | Published |
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20090118464 | PREPARATION OF POLYTRIMETHYLENE ETHER GLYCOL OR COPOLYMERS THEREOF - This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof having a number-average molecular weight of at least about 250 g/mole by a polycondensation reaction using at least one acid catalyst. | 05-07-2009 |
20090118465 | PREPARATION OF POLYTRIMTHYLENE ETHER GLYCOL OR COPOLYMERS THEREOF - This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof by a polycondensation reaction using at least one acid catalyst, wherein the temperature of the reaction is controlled such that the average temperature during the first half of the reaction is higher than the average temperature during the second half of the reaction. | 05-07-2009 |
20100267994 | PROCESSES FOR PREPARING POLYTRIMETHYLENE GLYCOL USING ION EXCHANGE RESINS - Processes for preparing polytrimethylene ether glycol or copolymers thereof using an acid polycondensation catalyst and ion exchange resins are provided. | 10-21-2010 |
20110077433 | POLYTRIMETHYLENE ETHER GLYCOL OR COPOLYMERS THEREOF HAVING IMPROVED COLOR AND PROCESSES FOR THEIR PREPARATION - Processes for reducing the color of polytrimethylene ether glycol or copolymers thereof are provided. The processes include polycondensing diols in the presence of an acid catalyst and adding base continuously over a period of the polycondensation reaction. The invention also relates to the polytrimethylene ether glycol thereof produced by these processes. | 03-31-2011 |
Tamara Spence, Abbotsford CA
Patent application number | Description | Published |
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20100293932 | APPARATUS AND METHOD FOR PRESSURE RELIEF IN AN EXHAUST BRAKE - An exhaust brake has a body with a passageway for exhaust gases therein. A valve member is movably located within the passageway for selective movement between an open position where the valve member opens the passageway and exhaust gases are free to move through the passageway and a closed position where the valve member blocks the passageway and the passage of exhaust gases through the passageway. The valve member has an aperture therethrough to permit a limited flow of exhaust gases through the aperture when the aperture is open. An exhaust valve actuator mechanism is coupled to the valve member for moving the valve member between the open position and the closed position. A closure member is positioned adjacent to the aperture. The closure member has an open position where the closure member is spaced apart from the valve member and permits a flow of exhaust gases through the aperture and the closure member having a closed position where the closure member contacts the valve member about the aperture and inhibits a flow of exhaust gases through the aperture, An actuator member operatively engages the closure member. There is a relief actuator mechanism, the relief actuator mechanism including an actuator member that operatively engages the closure member. The relief mechanism brings the closure member into operative engagement with the valve member with sufficient force, when the valve member is closed, to maintain the closure member in the closed position when the exhaust gases are below a predetermined pressure. | 11-25-2010 |