CA2635993C - Plunger lubricator housing - Google Patents
Plunger lubricator housing Download PDFInfo
- Publication number
- CA2635993C CA2635993C CA2635993A CA2635993A CA2635993C CA 2635993 C CA2635993 C CA 2635993C CA 2635993 A CA2635993 A CA 2635993A CA 2635993 A CA2635993 A CA 2635993A CA 2635993 C CA2635993 C CA 2635993C
- Authority
- CA
- Canada
- Prior art keywords
- plunger
- radial ports
- ports
- lubricator housing
- machining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims abstract description 3
- 238000003754 machining Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/068—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
Abstract
A plunger lubricator housing includes an elongated tubular body formed from a single piece of material. The body has a first end, a second end, an outer surface and an inner surface that defines a plunger receiving interior bore. Radial ports provide fluid communication between the interior bore and the outer surface. Each of the radial ports has a coupling that is recessed into the body.
Description
TITLE
[0001] Plunger Lubricator Housing FIELD
[0001] Plunger Lubricator Housing FIELD
[0002] This patent document relates to an integral housing for a plunger lubricator.
BACKGROUND
BACKGROUND
[0003] When pressure within a wellbore is insufficient to cause production fluid to rise naturally, plunger lift systems are used in which a plunger provides a mechanical interface between lifted gas from the formation disposed below the plunger and produced fluid disposed above the plunger. A plunger lubricator is positioned at surface. The plunger lubricator has fluid flow outlet ports through which produced fluids may exist. It generally has a shock absorbing element to absorb the kinetic energy of the plunger. It also has a catcher assembly for use in recovering the plunger from the wellbore.
Referring to FIG. 4, labelled as PRIOR ART, plunger lubricators that are currently used are formed by providing a cylindrical body 102, and welding external couplings to facilitate connection to the various fluid flow outlet ports 104 and other flow connections 106 of body 102.
Plunger lubricators are designed to receive a plunger in the interior bore, and allow access to it, such as by removing the stem 108 positioned on the top.
SUMMARY
Referring to FIG. 4, labelled as PRIOR ART, plunger lubricators that are currently used are formed by providing a cylindrical body 102, and welding external couplings to facilitate connection to the various fluid flow outlet ports 104 and other flow connections 106 of body 102.
Plunger lubricators are designed to receive a plunger in the interior bore, and allow access to it, such as by removing the stem 108 positioned on the top.
SUMMARY
[0004] There is provided a plunger lubricator housing which includes an elongated tubular body formed from a single piece of material. The body has a first end, a second end, an outer surface and an inner surface that defines a plunger receiving interior bore. Radial ports provide fluid communication between the interior bore and the outer surface. Each of the radial ports has a coupling that is recessed into the body.
BRIEF DESCRIPTION OF THE DRAWINGS
BRIEF DESCRIPTION OF THE DRAWINGS
[0005] These and other features will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to be in any way limiting, wherein:
FIG. 1 is a perspective view of a plunger lubricator housing.
FIG. 2 is a side elevation view of the plunger lubricator housing of FIG. 1.
FIG. 3 is a perspective view of the plunger lubricator housing of FIG. 1, attached to a stem.
FIG. 4 is a perspective view of a prior art plunger lubricator attached to a different type of stem.
DETAILED DESCRIPTION
FIG. 1 is a perspective view of a plunger lubricator housing.
FIG. 2 is a side elevation view of the plunger lubricator housing of FIG. 1.
FIG. 3 is a perspective view of the plunger lubricator housing of FIG. 1, attached to a stem.
FIG. 4 is a perspective view of a prior art plunger lubricator attached to a different type of stem.
DETAILED DESCRIPTION
[0006] A plunger lubricator housing generally identified by reference numeral 10, will now be described with reference to FIG. 1 through 3.
Structure and Relationship of Parts:
Structure and Relationship of Parts:
[0007] Referring to FIG. 1, body 10 has an inner surface 12 and an outer surface 14.
Inner surface 12 defines a bore 18 for receiving a plunger. Referring to FIG.
3, body 10 also has a well head connection 20 at a first end 22 for connecting to a well head (not shown), and a step connection 24 at a second end 25 for connecting to a stem 26. In a preferred embodiment, body 10 is formed from machining bar stock, however it may also be formed using other known methods, such as forging, casting, etc.
Inner surface 12 defines a bore 18 for receiving a plunger. Referring to FIG.
3, body 10 also has a well head connection 20 at a first end 22 for connecting to a well head (not shown), and a step connection 24 at a second end 25 for connecting to a stem 26. In a preferred embodiment, body 10 is formed from machining bar stock, however it may also be formed using other known methods, such as forging, casting, etc.
[0008] Body 10 is provided with flow ports 28 for connecting to flow lines.
Radial flow ports 28 are machined into body 10, and have threaded couplings 29 that are inset from outer surface 14. Referring to FIG. 1 and 2, body 10 may also be provided with other ports 30, which may be used to attach gauges or sensors, or to inject chemicals.
Referring to FIG. 1, body 10 may also include an equipment attachment 32 for attaching, for example, a magnetic sensor to indicate the arrival of a plunger, or a catch port 34 for catching a plunger at the top of its stroke. It will be understood that other components, such as lifting eyelets (not shown), may be welded or otherwise attached to body 10.
Radial flow ports 28 are machined into body 10, and have threaded couplings 29 that are inset from outer surface 14. Referring to FIG. 1 and 2, body 10 may also be provided with other ports 30, which may be used to attach gauges or sensors, or to inject chemicals.
Referring to FIG. 1, body 10 may also include an equipment attachment 32 for attaching, for example, a magnetic sensor to indicate the arrival of a plunger, or a catch port 34 for catching a plunger at the top of its stroke. It will be understood that other components, such as lifting eyelets (not shown), may be welded or otherwise attached to body 10.
[0009] The body is constructed from a single piece of material as follows.
First, a single piece of material is provided. The material is then machined, forged, or casted to form inner surface 12 (if necessary) and outer surface 14, where inner surface 12 defines a bore 18 for receiving a plunger. Well head connection 20 is machined at first end 22, and stem connection 24 is machined at second end 25 for connecting to a stem 26. Outer surface 14 is then machined to form ports 28, 30, and 34, equipment attachment 32. Outer surface 14 may be machined to have an increased thickness at various points along the length of body 10, such as an increased thickness about ports 28, 30 and 34 and about equipment attachment 32.
Advantages:
First, a single piece of material is provided. The material is then machined, forged, or casted to form inner surface 12 (if necessary) and outer surface 14, where inner surface 12 defines a bore 18 for receiving a plunger. Well head connection 20 is machined at first end 22, and stem connection 24 is machined at second end 25 for connecting to a stem 26. Outer surface 14 is then machined to form ports 28, 30, and 34, equipment attachment 32. Outer surface 14 may be machined to have an increased thickness at various points along the length of body 10, such as an increased thickness about ports 28, 30 and 34 and about equipment attachment 32.
Advantages:
[0010] It will be noted that, by comparison to the prior art lubricator shown in FIG. 4, body 10 is thicker around the various connections. This strengthens what are usually the weakest points of a plunger lubricator, namely, the connectors and the welds.
Furthermore, as body 10 is machined from a single piece, any weaknesses from the required welds in the prior art are avoided. This reduces the risk of failure and the accompanying costs, including environmental costs. Other advantages from forming body 10 from a single piece relative to the traditional welded design include: reduced crevice corrosion, reduced long term maintenance costs, increased quality control during production, minimized QA/QC (quality assurance and quality control) requirements, and the metallurgy is consistent throughout body 10. In addition, since the body is machined, it relatively simple to customize the design of the ports and the housing to meet the needs of the end user.
Furthermore, as body 10 is machined from a single piece, any weaknesses from the required welds in the prior art are avoided. This reduces the risk of failure and the accompanying costs, including environmental costs. Other advantages from forming body 10 from a single piece relative to the traditional welded design include: reduced crevice corrosion, reduced long term maintenance costs, increased quality control during production, minimized QA/QC (quality assurance and quality control) requirements, and the metallurgy is consistent throughout body 10. In addition, since the body is machined, it relatively simple to customize the design of the ports and the housing to meet the needs of the end user.
[0011] In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
[0012] The following claims are to be understood to include what is specifically illustrated and described above, what is conceptually equivalent, and what can be obviously substituted. Those skilled in the art will appreciate that various adaptations and modifications of the described embodiments can be configured without departing from the scope of the claims. The illustrated embodiments have been set forth only as examples and should not be taken as limiting the invention. It is to be understood that, within the scope of the following claims, the invention may be practiced other than as specifically illustrated and described.
Claims (4)
1. A plunger lubricator housing, comprising:
an elongated tubular body formed from a single piece of material, the body having a first end, a second end, an outer surface, an inner surface that defines a plunger receiving interior bore, and radial ports providing fluid communication between the interior bore and the outer surface, each of the radial ports having a threaded coupling that is inset from the outer surface of the body.
an elongated tubular body formed from a single piece of material, the body having a first end, a second end, an outer surface, an inner surface that defines a plunger receiving interior bore, and radial ports providing fluid communication between the interior bore and the outer surface, each of the radial ports having a threaded coupling that is inset from the outer surface of the body.
2. The plunger lubricator housing of claim 1, wherein the body is thicker about the radial ports.
3. A method of constructing a plunger lubricator housing, comprising:
providing an elongated tubular body formed from a single piece of material having an outer surface and an inner surface that defines a plunger receiving bore;
machining a well head connection at a first end for connecting to a well head;
and machining radial flow ports that extend from the outer surface to the inner surface;
machining a threaded coupling that is inset from the outer surface of the body for each of the radial ports to facilitate connection of each of the radial ports to flow lines.
providing an elongated tubular body formed from a single piece of material having an outer surface and an inner surface that defines a plunger receiving bore;
machining a well head connection at a first end for connecting to a well head;
and machining radial flow ports that extend from the outer surface to the inner surface;
machining a threaded coupling that is inset from the outer surface of the body for each of the radial ports to facilitate connection of each of the radial ports to flow lines.
4. The method of claim 3, further comprising the step of machining the outer surface such that the body is thicker about the radial ports.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2635993A CA2635993C (en) | 2008-06-12 | 2008-06-12 | Plunger lubricator housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2635993A CA2635993C (en) | 2008-06-12 | 2008-06-12 | Plunger lubricator housing |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2635993A1 CA2635993A1 (en) | 2009-12-12 |
CA2635993C true CA2635993C (en) | 2011-10-11 |
Family
ID=41412279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2635993A Expired - Fee Related CA2635993C (en) | 2008-06-12 | 2008-06-12 | Plunger lubricator housing |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2635993C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9850731B2 (en) | 2012-09-28 | 2017-12-26 | 1069416 Alberta Ltd. | Lubricator with interchangeable ports |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2918007C (en) | 2015-01-15 | 2022-10-18 | Flowco Production Solutions, LLC | Robust bumper spring assembly |
US9624996B2 (en) | 2015-01-15 | 2017-04-18 | Flowco Production Solutions, LLC | Robust bumper spring assembly |
US9915133B2 (en) | 2015-02-20 | 2018-03-13 | Flowco Production Solutions, LLC | Unibody bypass plunger with centralized helix and crimple feature |
US10669824B2 (en) | 2015-02-20 | 2020-06-02 | Flowco Production Solutions, LLC | Unibody bypass plunger and valve cage with sealable ports |
US10221849B2 (en) | 2015-05-18 | 2019-03-05 | Patriot Artificial Lift, LLC | Forged flange lubricator |
US10161230B2 (en) | 2016-03-15 | 2018-12-25 | Patriot Artificial Lift, LLC | Well plunger systems |
US10550674B2 (en) | 2018-03-06 | 2020-02-04 | Flowco Production Solutions, LLC | Internal valve plunger |
US11293267B2 (en) | 2018-11-30 | 2022-04-05 | Flowco Production Solutions, LLC | Apparatuses and methods for scraping |
USD937982S1 (en) | 2019-05-29 | 2021-12-07 | Flowco Production Solutions, LLC | Apparatus for a plunger system |
WO2021046330A1 (en) | 2019-09-05 | 2021-03-11 | Flowco Productions Solutions, Llc | Gas assisted plunger lift control system and method |
-
2008
- 2008-06-12 CA CA2635993A patent/CA2635993C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9850731B2 (en) | 2012-09-28 | 2017-12-26 | 1069416 Alberta Ltd. | Lubricator with interchangeable ports |
Also Published As
Publication number | Publication date |
---|---|
CA2635993A1 (en) | 2009-12-12 |
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Legal Events
Date | Code | Title | Description |
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EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20220613 |