CA2403439C - Method of pumping liquids from a well - Google Patents
Method of pumping liquids from a well Download PDFInfo
- Publication number
- CA2403439C CA2403439C CA002403439A CA2403439A CA2403439C CA 2403439 C CA2403439 C CA 2403439C CA 002403439 A CA002403439 A CA 002403439A CA 2403439 A CA2403439 A CA 2403439A CA 2403439 C CA2403439 C CA 2403439C
- Authority
- CA
- Canada
- Prior art keywords
- tubing string
- well
- piston rod
- hollow piston
- tubing
- 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
- 238000005086 pumping Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 title claims abstract description 11
- 239000012530 fluid Substances 0.000 description 7
- 101100041681 Takifugu rubripes sand gene Proteins 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
- F04B47/04—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
A method of producing liquid from a well. A first step involves installing a tubing string in a well by securing a lower end of the tubing string via a telescopic connector to a pump tubing anchor positioned down the well. The telescopic connector allows a predetermined axial reciprocating pumping stroke of the tubing string relative to the pump tubing anchor. A second step involves positioning an hydraulic pump jack that has a reciprocating hollow piston rod at the top of the well. A third step involves securing an upper end of the tubing string within the hollow piston rod of the hydraulic pump jack. The reciprocating movement of the hollow piston rod serves to reciprocally move the tubing string through the reciprocating pumping stroke.
Description
TITLE OF THE INVENTION:
Method of Pumping Liquids from a Well FIELD OF THE INVENTION
The present invention relates to a method of pumping liquids from a well.
BACKGROUND OF THE INVENTION
United States Patent 4,448,110 (Polak et al 1984) discloses a hydraulic pump jack that has a hollow piston rod.
The Polak et al reference teaches that an advantage of the use of a hollow piston rod is that it can be telescoped down over the emerging end of a hollow sucker rod to which it is clamped. As the hollow piston rod moves up and down, the hollow sucker rod is carried up and down in a reciprocating pumping action.
SUN~1ARY OF THE INVENTION
The present invention relates to an alternative method of pumping liquid from a well utilizing a hydraulic pump jack with a hollow piston rod.
According to the present invention there is provided a method of producing liquid from a well. A first step involves installing a tubing string in a well by securing a lower end of the tubing string via a telescopic connector to a pump tubing anchor positioned down the well. The telescopic connector allows a predetermined axial reciprocating pumping stroke of the tubing string relative to the pump tubing anchor. A second step involves positioning an hydraulic pump jack that has a reciprocating hollow piston rod at the top of the well. A third step involves securing an upper end of the tubing string within the hollow piston rod of the hydraulic pump jack. The reciprocating movement of the hollow piston rod serves to reciprocally move the tubing string through the reciprocating pumping stroke.
Method of Pumping Liquids from a Well FIELD OF THE INVENTION
The present invention relates to a method of pumping liquids from a well.
BACKGROUND OF THE INVENTION
United States Patent 4,448,110 (Polak et al 1984) discloses a hydraulic pump jack that has a hollow piston rod.
The Polak et al reference teaches that an advantage of the use of a hollow piston rod is that it can be telescoped down over the emerging end of a hollow sucker rod to which it is clamped. As the hollow piston rod moves up and down, the hollow sucker rod is carried up and down in a reciprocating pumping action.
SUN~1ARY OF THE INVENTION
The present invention relates to an alternative method of pumping liquid from a well utilizing a hydraulic pump jack with a hollow piston rod.
According to the present invention there is provided a method of producing liquid from a well. A first step involves installing a tubing string in a well by securing a lower end of the tubing string via a telescopic connector to a pump tubing anchor positioned down the well. The telescopic connector allows a predetermined axial reciprocating pumping stroke of the tubing string relative to the pump tubing anchor. A second step involves positioning an hydraulic pump jack that has a reciprocating hollow piston rod at the top of the well. A third step involves securing an upper end of the tubing string within the hollow piston rod of the hydraulic pump jack. The reciprocating movement of the hollow piston rod serves to reciprocally move the tubing string through the reciprocating pumping stroke.
2 BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention 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 in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIGURE 1 is a side elevation view, in section, of a downhole tubing string installation in accordance with the teachings of the method for pumping liquid from a well.
FIGURE 2 is a a side elevation view, in section, of an above ground connection of the tubing string to an hydraulic pump jack having a hollow piston rod in accordance with the teachings of the method for pumping liquid from a well.
FIGURE 3 labelled as PRIOR ART is a side elevation view, in section, of a down hole hollow sucker rod installation in accordance as practised in the prior art.
DETAILED DESCRIPTION OF THE PREFERRED Ei~ODIMENT
The preferred embodiment, a method of producing liquid from a well will now be described with reference to FIGURES 1 through 3.
Referring to FIGURE 3, there is labelled as PRIOR ART
and illustrated a conventional method of producing liquid from a well using the hydraulic pump jack with hollow piston rod taught by the Polak et al reference. There is illustrated a well, generally indicated by reference numeral 12. Lining well 12 is casing 14 and suspended within the casing is a tubing string 16. This method involves positioning a hollow sucker rod 18 inside of tubing string 16. A tubing pumping barrel, generally indicated by reference numeral 20 is provided downhole in well 12. Casing 14 has perforation 22 in the vicinity of tubing pumping barrel 20 in order to provide communication with reservoir fluids, as indicated by arrows 24. Positioned within tubing
These and other features of the invention 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 in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIGURE 1 is a side elevation view, in section, of a downhole tubing string installation in accordance with the teachings of the method for pumping liquid from a well.
FIGURE 2 is a a side elevation view, in section, of an above ground connection of the tubing string to an hydraulic pump jack having a hollow piston rod in accordance with the teachings of the method for pumping liquid from a well.
FIGURE 3 labelled as PRIOR ART is a side elevation view, in section, of a down hole hollow sucker rod installation in accordance as practised in the prior art.
DETAILED DESCRIPTION OF THE PREFERRED Ei~ODIMENT
The preferred embodiment, a method of producing liquid from a well will now be described with reference to FIGURES 1 through 3.
Referring to FIGURE 3, there is labelled as PRIOR ART
and illustrated a conventional method of producing liquid from a well using the hydraulic pump jack with hollow piston rod taught by the Polak et al reference. There is illustrated a well, generally indicated by reference numeral 12. Lining well 12 is casing 14 and suspended within the casing is a tubing string 16. This method involves positioning a hollow sucker rod 18 inside of tubing string 16. A tubing pumping barrel, generally indicated by reference numeral 20 is provided downhole in well 12. Casing 14 has perforation 22 in the vicinity of tubing pumping barrel 20 in order to provide communication with reservoir fluids, as indicated by arrows 24. Positioned within tubing
3 pumping barrel 20 are a pump intake 26 and a standing valve 28. Positioned at a lower remote end 30 of hollow sucker rod 18 is a plunger 32. Positioned above tubing pump barrel 20 is a tubing drain 34.
In contrast, the present method consists of the following steps. Referring to FIGURE l, a first step involves installing a tubing string 102 in a well 104 by securing a lower end of tubing string 102 via a telescopic connector 106 to a pump tubing anchor 108 positioned down well 104. Telescopic connector 106 allows a predetermined axial reciprocating pumping stroke, as indicated by arrows 110, of tubing string 102 relative to pump tubing anchor 108.
Referring to FIGURE 2, a second step involves positioning an hydraulic pump jack 112 that has a reciprocating hollow piston rod 114 at a top 116 of well 104. The reciprocating movement of hollow piston rod 114 is indicated by arrows 118.
A third step involves securing an upper end 120 of tubing string 102 within hollow piston rod 114 of hydraulic pump jack 112. A clamp 122 is secured to upper end of 120 tubing string 112. Referring to FIGURE 2, the reciprocating movement of hollow piston rod 114, as indicated by arrows 118, serves to reciprocally move tubing string 102 through its reciprocating pumping stroke as indicated by arrows 110 in FIGURE 1. Referring to FIGURE 2. this is accomplished as hollow piston 114 moves upward, it engages with clamp 122 secured to upper end 120 of tubing string 102, thereby drawing tubing string 102 upward. As tubing string 102 is drawn upward, fluids along with sand are drawn into pump intake 124 of a pump 126 illustrated in FIGURE 1, and up tubing string to surface 128. Fluids are then directed through a c tool 130 and along a flex hose 132 to a fluid production line 134. C tool 130 has an clean out entry 138 with a sealing cap 140. In the event that sand blocks flow through tubing string 102, sealing cap 140 is removed and coiled tubing can be inserted through clean out entry 138 and down tubing string 102 to clear out any sand blockage.
In contrast, the present method consists of the following steps. Referring to FIGURE l, a first step involves installing a tubing string 102 in a well 104 by securing a lower end of tubing string 102 via a telescopic connector 106 to a pump tubing anchor 108 positioned down well 104. Telescopic connector 106 allows a predetermined axial reciprocating pumping stroke, as indicated by arrows 110, of tubing string 102 relative to pump tubing anchor 108.
Referring to FIGURE 2, a second step involves positioning an hydraulic pump jack 112 that has a reciprocating hollow piston rod 114 at a top 116 of well 104. The reciprocating movement of hollow piston rod 114 is indicated by arrows 118.
A third step involves securing an upper end 120 of tubing string 102 within hollow piston rod 114 of hydraulic pump jack 112. A clamp 122 is secured to upper end of 120 tubing string 112. Referring to FIGURE 2, the reciprocating movement of hollow piston rod 114, as indicated by arrows 118, serves to reciprocally move tubing string 102 through its reciprocating pumping stroke as indicated by arrows 110 in FIGURE 1. Referring to FIGURE 2. this is accomplished as hollow piston 114 moves upward, it engages with clamp 122 secured to upper end 120 of tubing string 102, thereby drawing tubing string 102 upward. As tubing string 102 is drawn upward, fluids along with sand are drawn into pump intake 124 of a pump 126 illustrated in FIGURE 1, and up tubing string to surface 128. Fluids are then directed through a c tool 130 and along a flex hose 132 to a fluid production line 134. C tool 130 has an clean out entry 138 with a sealing cap 140. In the event that sand blocks flow through tubing string 102, sealing cap 140 is removed and coiled tubing can be inserted through clean out entry 138 and down tubing string 102 to clear out any sand blockage.
4 Referring to FIGURE 2. as hollow piston 114 moves downward, tubing string 102 also travels downward in well 104 illustrated in FIGURE 1. Pump shuts off to block the flow of fluid into tubing string 102. Upon hollow piston 114 resuming upward movement, again tubing string is drawn upward and the fluids along with sand are drawn into pump 126 to repeat the pumping cycle created by the reciprocal movement. Reciprocal movement of tubing string 102 can continue for Long periods of time and is able to handle fluids containing high levels of sand content without becoming blocked. With the prior art illustrated in FIGURE 3. blockages are more frequent and are difficult to clear and can cause hollow sucker rod 18 to seize up. Referring to FIGURE 2, in the event of a blockage, tubing string 102 can easily be cleared through clean out entry 138 of c tool 130 as described above.
Referring to FIGURE 2, in the illustrated embodiment, hydraulic pump jack 112 includes a supporting frame 140 and a base 142 for supporting frame 140. Base 142 is positioned over a sealing box 144 on a well head 146 at surface 128, through which tubing string 102 passes. Frame 140 is then mounted to base 142. Bracing legs 148 can be secured to frame 140, if additional stability is required. Hydraulic pump jack 112 with hollow piston rod 114 is positioned within frame 140. Roller supports 150 with rollers 152 are mounted adjacent a first end 154 of hollow piston rod 114. Rollers 152 engage with travel channels 156 in frame 140 to guide hollow piston rod 114 as it travels through its reciprocal movement.
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.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment
Referring to FIGURE 2, in the illustrated embodiment, hydraulic pump jack 112 includes a supporting frame 140 and a base 142 for supporting frame 140. Base 142 is positioned over a sealing box 144 on a well head 146 at surface 128, through which tubing string 102 passes. Frame 140 is then mounted to base 142. Bracing legs 148 can be secured to frame 140, if additional stability is required. Hydraulic pump jack 112 with hollow piston rod 114 is positioned within frame 140. Roller supports 150 with rollers 152 are mounted adjacent a first end 154 of hollow piston rod 114. Rollers 152 engage with travel channels 156 in frame 140 to guide hollow piston rod 114 as it travels through its reciprocal movement.
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.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment
5 without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of producing liquid from a well, comprising the steps of:
installing a tubing string in a well by securing a lower end of the tubing string via a telescopic connector to a pump tubing anchor positioned down the well, the telescopic connector allowing predetermined axial reciprocating pumping stroke of the tubing string relative to the pump tubing anchor; positioning an hydraulic pump jack that has a reciprocating hollow piston rod at the top of the well; and securing an upper end of the tubing string within the hollow piston rod of the hydraulic pump jack, the reciprocating movement of the hollow piston rod serving to reciprocally move the tubing string through the reciprocating pumping stroke.
installing a tubing string in a well by securing a lower end of the tubing string via a telescopic connector to a pump tubing anchor positioned down the well, the telescopic connector allowing predetermined axial reciprocating pumping stroke of the tubing string relative to the pump tubing anchor; positioning an hydraulic pump jack that has a reciprocating hollow piston rod at the top of the well; and securing an upper end of the tubing string within the hollow piston rod of the hydraulic pump jack, the reciprocating movement of the hollow piston rod serving to reciprocally move the tubing string through the reciprocating pumping stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002403439A CA2403439C (en) | 2002-09-16 | 2002-09-16 | Method of pumping liquids from a well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002403439A CA2403439C (en) | 2002-09-16 | 2002-09-16 | Method of pumping liquids from a well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2403439A1 CA2403439A1 (en) | 2003-01-19 |
| CA2403439C true CA2403439C (en) | 2003-11-11 |
Family
ID=4171215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002403439A Expired - Fee Related CA2403439C (en) | 2002-09-16 | 2002-09-16 | Method of pumping liquids from a well |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2403439C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2451918C (en) | 2003-12-18 | 2011-07-12 | Ici Solutions Inc. | Pumping assembly |
-
2002
- 2002-09-16 CA CA002403439A patent/CA2403439C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2403439A1 (en) | 2003-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20200916 |