Direct steam injection (DSI) heating and use in bitumen froth treatment operations

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11525093
APP PUB NO 20210040395A1
SERIAL NO

17080308

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Direct steam injection (DSI) heating techniques can use a heater to heat a process stream in bitumen froth treatment. The DSI heater can include a diffuser with multiple side-by-side rows of outlets perpendicular to a longitudinal axis of the diffuser, and a piston plug that moves axially within the diffuser to selectively cover rows of outlets to vary steam injection. The piston plug has first and second annular seals and is moved between different axial positions in a stepwise fashion such that when one or more rows of outlets are completely covered, the first annular seal is located in between adjacent rows and the second annular seal abuts against the diffuser to inhibit passage of steam so as to prevent cavitation. The DSI heater can include various other features, such as particular seal unit constructions and diffuser outlet configurations.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
FORT HILLS ENERGY L PC/O FORT HILLS ENERGY CORPORATION P O BOX 2844 150-6TH AVENUE S W CALGARY AB T2P 3E3

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bavaresco, Juan Calgary, CA 2 0
Buckingham, David Calgary, CA 2 0
Elligson, Shane Calgary, CA 2 0
Gupta, Siddharth Calgary, CA 63 345
Van, Der Merwe Shawn Calgary, CA 24 119
Venter, Theunis Calgary, CA 2 0
Ward, Jaime Calgary, CA 3 3

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Jun 13, 2026
7.5 Year Payment $3600.00 $1800.00 $900.00 Jun 13, 2030
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jun 13, 2034
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00