IP Library Granted Patent US 12,331,772
Granted Patent B2
US 12,331,772 · App. 18/622,372 · Granted Jun 17, 2025

Radial flow plunger lift lubricator

Inventors: Michael T. Sutherland (Calgary, CA); Clint Mason (Carstairs, CA); Kelly John Mason (Starland County, CA); Timothy Dean Hadland (Sylvan Lake, CA)
Assignee: Kaizen Well Solutions Ltd.
F16B39/04E21B34/14E21B43/121F16B21/12
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,331,772
App. No.
18/622,372
Granted
Jun 17, 2025
Kind
B2
Abstract

A plunger lift lubricator having an internal bypass configuration which enables a plunger to be reliably captured and while still allowing the flow of fluid up through the lubricator before the fluid is directed radially outward and down the internal bypass passageways. The lubricator can comprise both an upper flow path and a lower flow path and can be configured such that a plunger can travel all the way up to shift a valve in the plunger if needed.

Claims (26)

1. A plunger lift lubricator comprising:

a plunger holding area;

an upper chamber comprising a diameter larger than a diameter of the plunger holding area;

a plurality of radially positioned bypass openings disposed in said upper chamber; and

a plurality of discrete internal bypass passages which extend at least a length of a plunger holding area and said plurality of discrete internal bypass passages positioned such that they are not blocked by a plunger when the plunger is disposed within the plunger holding area.

2. The plunger lift lubricator of claim 1 wherein said plunger lift lubricator is configured such that a flow of fluid can travel up through said plunger holding area and into said upper chamber before turning and exiting said upper chamber through said plurality of radially positioned bypass openings.

3. The plunger lift lubricator of claim 1 wherein said plurality of discrete internal bypass passages allow flow to an annulus formed between an exterior of said plunger holding area and a body of said plunger lift lubricator.

4. The plunger lift lubricator of claim 1 wherein said plurality of discrete internal bypass passages comprise a plurality of passages disposed outside of said plunger holding area.

5. The plunger lift lubricator of claim 1 wherein said plurality of discrete internal bypass passages a plurality of channels formed on an interior of a body of said plunger lift lubricator such that when a sleeve is positioned within said body, the said plurality of discrete internal bypass passages are formed within said plurality of channels.

6. The plunger lift lubricator of claim 1 further comprising a lower flow path.

7. The plunger lift lubricator of claim 6 wherein said lower flow path comprises at least one lower opening positioned such that it is below the plunger when the plunger is fully seated up into said plunger holding area.

8. The plunger lift lubricator of claim 7 wherein said at least one lower opening is disposed through a sleeve which forms the plunger holding area.

9. The plunger lift lubricator of claim 8 wherein said at least one lower opening comprises a plurality of lower openings.

10. The plunger lift lubricator of claim 1 further comprising a plunger catching mechanism.

11. The plunger lift lubricator of claim 10 wherein said plunger holding area comprises a sleeve and wherein said sleeve does not extend above said plunger catching mechanism.

12. The plunger lift lubricator of claim 1 further comprising a sleeve.

13. The plunger lift lubricator of claim 12 wherein said sleeve is rotationally adjustable to provide an adjustable flow.

14. A method for producing fluids through a plunger while the plunger is disposed in a plunger holding area of a plunger lift lubricator, the method comprising:

flowing fluid up through the plunger into an upper chamber having a diameter larger than the plunger holding area, directing the fluid radially out of the upper chamber by passing the fluid through a plurality of openings disposed in the upper chamber to a distance beyond an outside of the plunger holding area, then allowing the fluid to flow down past the plunger holding area through a plurality of discrete internal bypass passages while the plunger is disposed within the plunger lift lubricator.

15. The method of claim 14 wherein allowing the fluid to flow down past the plunger holding area through the plurality discrete of internal bypass passages comprises directing the fluid to a distance beyond an outside circumference of the plunger holding area.

16. The method of claim 14 further comprising simultaneously allowing fluid to be produced by directing the fluid away from the plunger before the fluid reaches the plunger.

17. The method of claim 14 further comprising allowing fluid that flowed up through the plunger to be merged together with fluid that did not flow up through the plunger before any of the merged fluid exits the plunger lift lubricator.

18. The method of claim 14 further comprising activating a mechanism to capture the plunger such that the plunger is held within the plunger lift lubricator.

19. The method of claim 14 wherein allowing the fluid to flow down past the plunger holding area through the plurality of discrete internal bypass passages comprises allowing the fluid to flow down through an annulus formed between an exterior of a sleeve and an interior of a body of the plunger lift lubricator.

20. The method of claim 14 wherein allowing the fluid to flow down past the plunger holding area through the plurality of discrete internal bypass passages comprises allowing the fluid to flow through a plurality of passages arranged circumferentially around an exterior of a plunger holding area of the plunger lift lubricator.

21. The method of claim 14 wherein directing the fluid radially comprises passing the fluid out through a plurality of openings disposed above a top of the plunger when the plunger is disposed within the plunger holding area.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 12, 2024
From: SUTHERLAND, MICHAEL T.
To: KITALPHA ENGINEERING INC.
Reel/Frame 067089/0477 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 12, 2024
From: KITALPHA ENGINEERING INC.
To: KAIZEN WELL SOLUTIONS LTD.
Reel/Frame 067089/0729 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 31, 2024
From: MASON, CLINT; MASON, KELLY JOHN; HADLAND, TIMOTHY DEAN
To: KAIZEN WELL SOLUTIONS LTD.
Reel/Frame 067099/0709 →
Continuity (3)
Continuation 17861620 · Jul 11, 2022
Provisional Application 63219982 · Jul 9, 2021
Related Publication 20240240663A1 · Jul 18, 2024
References Cited (24)
US 1815364A · Ricker · 1931 [cited by examiner]
US 1844074A · Ricker · 1932 [cited by examiner]
US 5012864A · Enright · 1991 [cited by examiner]
US 7328748B2 · Giacomino · 2008 [cited by applicant]
US 8485262B1 · Angers · 2013 [cited by applicant]
US 8485263B2 · Lembcke · 2013 [cited by applicant]
US 9909402B2 · Armistead · 2018 [cited by applicant]
US 9945200B2 · Travis et al. · 2018 [cited by applicant]
US 10689956B2 · Agarwal et al. · 2020 [cited by applicant]
US 11208874B2 · Murdoch et al. · 2021 [cited by applicant]
US 11952855B2 · Angers, Jr. · 2024 [cited by applicant]
US 20050056416A1 · Gray et al. · 2005 [cited by applicant]
US 20050241819A1 · Victor · 2005 [cited by examiner]
US 20060108126A1 · Horn · 2006 [cited by examiner]
US 20150176377A1 · Agarwal · 2015 [cited by examiner]
US 20160069165A1 · Stokes et al. · 2016 [cited by applicant]
US 20170044882A1 · Casey · 2017 [cited by examiner]
US 20170107800A1 · Townsend · 2017 [cited by examiner]
US 20220290499A1 · Geldenhuys · 2022 [cited by examiner]
US 20230008526A1 · Sutherland et al. · 2023 [cited by applicant]
US 20230175350A1 · Freeman · 2023 [cited by examiner]
US 20250035108A1 · Buttnor et al. · 2025 [cited by applicant]
CN 206376827U · 2017 [cited by applicant]
CN 110847843B · 2021 [cited by applicant]