CA2509082A1 - Rotary pump stabilizer - Google Patents
Rotary pump stabilizer Download PDFInfo
- Publication number
- CA2509082A1 CA2509082A1 CA 2509082 CA2509082A CA2509082A1 CA 2509082 A1 CA2509082 A1 CA 2509082A1 CA 2509082 CA2509082 CA 2509082 CA 2509082 A CA2509082 A CA 2509082A CA 2509082 A1 CA2509082 A1 CA 2509082A1
- Authority
- CA
- Canada
- Prior art keywords
- stabilizer
- sliding dog
- tubular body
- bore
- uphole
- 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.)
- Granted
Links
- 239000003381 stabilizer Substances 0.000 title claims abstract 23
- 230000000087 stabilizing effect Effects 0.000 claims abstract 15
- 239000012530 fluid Substances 0.000 claims abstract 11
- 230000000750 progressive effect Effects 0.000 claims abstract 2
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
- E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
- Earth Drilling (AREA)
Abstract
A stabilizer is provided for stabilizing a rotary or progressive cavity pump suspended from production tubing in well casing. The stabilizer is connected between the production tubing and the pump. The stabilizer has a tubular body having a cylindrical wall and a longitudinal bore contiguous with the production tubing. A releasable sliding dog is disposed on the exterior of the tubular body and is operatively connected by a link to one or more pistons. Each piston is disposed in a piston housing that is in fluid communication with the bore of the tubular body. Circumferentially spaced-apart feet extend radially outwardly from the tubular body. In operation, actuating fluid pressure advances the pistons uphole, driving the sliding dog up one or more longitudinal outwardly extending ramps to brace against the casing, with the feet contacting the casing and bearing opposing reactive force. Preferably, the sliding dog and the feet form a three-point contact with the casing that arrests lateral movement in any direction. Under non-actuating pressure, upward drag on the sliding dog compresses the pistons, retracting the dog, and permitting removal of the stabilizer and pump.
Claims (18)
1. A stabilizer for stabilizing a well tool within a subterranean casing, the well tool being suspended from a production tubing and having a longitudinal bore for containing pressurized well fluid therein, the stabilizer comprising:
a tubular body having a cylindrical wall and a longitudinal bore extending therethrough, the tubular body positioned within the casing between the well tool and the production tubing, the bore of the tubular body in communication with the bore of the production tubing;
a releasable stabilizing means disposed on the tubular body, the stabilizing means being actuated to extend radially outward for contacting the casing; and at least two circumferentially spaced-apart feet extending radially outward from the tubular body, an angle between the stabilizing means and each of the feet adjacent to the stabilizing means being greater than 90 degrees, wherein the feet and the stabilizing means contacting the casing when the stabilizing means is actuated.
a tubular body having a cylindrical wall and a longitudinal bore extending therethrough, the tubular body positioned within the casing between the well tool and the production tubing, the bore of the tubular body in communication with the bore of the production tubing;
a releasable stabilizing means disposed on the tubular body, the stabilizing means being actuated to extend radially outward for contacting the casing; and at least two circumferentially spaced-apart feet extending radially outward from the tubular body, an angle between the stabilizing means and each of the feet adjacent to the stabilizing means being greater than 90 degrees, wherein the feet and the stabilizing means contacting the casing when the stabilizing means is actuated.
2. The stabilizer of claim 1 wherein the angle is in the range of about 110 degrees to 160 degrees.
3. The stabilizer of claim 1 wherein the angle is about 120 degrees.
4. The stabilizer of claim 1 wherein there are two feet equidistant from the stabilizing means, wherein the angle is about 120 degrees, and wherein the feet and the stabilizing means form a three-point contact with the casing when the stabilizing means is actuated.
5. The stabilizing means of any one of claims 1 to 4 wherein the stabilizing means is actuated by fluid pressure in the bore of the tubular body.
6. The stabilizer of any one of claim 5 wherein the stabilizing means comprises:
a recessed pocket formed in the wall, the pocket having an uphole portion and a downhole portion, the uphole portion forming at least one radially outwardly extending ramp;
a radially outwardly extendable sliding dog disposed within the uphole portion of the pocket, the sliding dog having a first position and a second position, the sliding dog being retracted within the pocket in the first position and radially outwardly extended in the second position; and actuating means positioned within the downhole portion of the pocket and operatively connected to the sliding dog, the actuating means in fluid communication with the bore of the tubular body whereby the fluid pressure causes the actuating means to advance uphole, driving the sliding dog longitudinally along the at least one ramp to move the sliding dog from the first position to the second position to contact the casing and stabilize the well tool, the force of contact being substantially proportional to the fluid pressure.
a recessed pocket formed in the wall, the pocket having an uphole portion and a downhole portion, the uphole portion forming at least one radially outwardly extending ramp;
a radially outwardly extendable sliding dog disposed within the uphole portion of the pocket, the sliding dog having a first position and a second position, the sliding dog being retracted within the pocket in the first position and radially outwardly extended in the second position; and actuating means positioned within the downhole portion of the pocket and operatively connected to the sliding dog, the actuating means in fluid communication with the bore of the tubular body whereby the fluid pressure causes the actuating means to advance uphole, driving the sliding dog longitudinally along the at least one ramp to move the sliding dog from the first position to the second position to contact the casing and stabilize the well tool, the force of contact being substantially proportional to the fluid pressure.
7. The stabilizer of claim 6 wherein the actuating means is connected to the sliding dog by a link, and wherein the sliding dog is substantially parallel with the casing when actuated.
8. The stabilizer of claims 6 or 7 wherein the uphole portion of the pocket forms two longitudinally spaced and parallel ramps.
9. The stabilizer of claim 8 further comprising an uphole retraction stop between the two ramps, the uphole retraction stop having an upwardly facing surface for contacting a downwardly facing surface of the sliding dog when in the first position.
10. The stabilizer of any one of claims 6 to 9 further comprising:
a downhole retraction stop positioned between the sliding dog and the actuating means, the downhole retraction stop limiting the downhole movement of the sliding dog.
a downhole retraction stop positioned between the sliding dog and the actuating means, the downhole retraction stop limiting the downhole movement of the sliding dog.
11. The stabilizer of any one of claims 6 to 10 further comprising:
an extension stop positioned between the sliding dog and the actuating means, the extension stop limiting the uphole movement of the actuating means.
an extension stop positioned between the sliding dog and the actuating means, the extension stop limiting the uphole movement of the actuating means.
12. The stabilizer of claim 6 further comprising:
a downhole retraction stop positioned between the sliding dog and the actuating means, the downhole retraction stop limiting the downhole movement of the sliding dog; and an extension stop positioned between the sliding dog and the actuating means, the extension stop limiting the uphole movement of the actuating means, wherein the downhole retraction stop and the extension stop are the same.
a downhole retraction stop positioned between the sliding dog and the actuating means, the downhole retraction stop limiting the downhole movement of the sliding dog; and an extension stop positioned between the sliding dog and the actuating means, the extension stop limiting the uphole movement of the actuating means, wherein the downhole retraction stop and the extension stop are the same.
13. The stabilizer of any one of claims 6 to 12 wherein the actuating means comprises:
one or more piston bores formed in a piston housing, the piston housing securely fit within the downhole portion of the pocket, each piston bore having a first downhole end in communication with the bore of the tubular body and a second end open to the one or more pockets; and a piston longitudinally moveable within each piston bore and having an uphole end operatively connected to the sliding dog, the fluid pressure within the bore of the tubular body pressurizing each piston bore causing each piston to advance uphole to drive the sliding dog.
one or more piston bores formed in a piston housing, the piston housing securely fit within the downhole portion of the pocket, each piston bore having a first downhole end in communication with the bore of the tubular body and a second end open to the one or more pockets; and a piston longitudinally moveable within each piston bore and having an uphole end operatively connected to the sliding dog, the fluid pressure within the bore of the tubular body pressurizing each piston bore causing each piston to advance uphole to drive the sliding dog.
14. The stabilizer of claim 13 wherein there are two piston bores, wherein the pistons are connected to the sliding dog by a link having a first end pivotally connected to the piston and a second end pivotally connected to the sliding dog, and wherein the uphole portion forms two longitudinally spaced and parallel ramps.
15. The stabilizer of any one of claims 1 to 14 further comprising a shear pin extending through the wall and the stabilizing means to prevent actuation of the apparatus in the absence of actuating fluid pressure.
16. The stabilizer of any one of claims 1 to 15 wherein the well tool being stabilized is a fluid pump that pressurizes fluid within the bore of the tubular body.
17. The stabilizer of claim 16 wherein the pump is a rotary pump.
18. The stabilizer of claim 16 wherein the pump is a progressive cavity pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2509082A CA2509082C (en) | 2005-06-02 | 2005-06-02 | Rotary pump stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2509082A CA2509082C (en) | 2005-06-02 | 2005-06-02 | Rotary pump stabilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2509082A1 true CA2509082A1 (en) | 2006-12-02 |
| CA2509082C CA2509082C (en) | 2011-04-26 |
Family
ID=37480370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2509082A Active CA2509082C (en) | 2005-06-02 | 2005-06-02 | Rotary pump stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2509082C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116619177A (en) * | 2023-07-24 | 2023-08-22 | 辽宁华天航空科技股份有限公司 | Intelligent integrated grinding and polishing equipment and method for metal plates |
-
2005
- 2005-06-02 CA CA2509082A patent/CA2509082C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116619177A (en) * | 2023-07-24 | 2023-08-22 | 辽宁华天航空科技股份有限公司 | Intelligent integrated grinding and polishing equipment and method for metal plates |
| CN116619177B (en) * | 2023-07-24 | 2023-09-15 | 辽宁华天航空科技股份有限公司 | Intelligent integrated grinding and polishing equipment and method for metal plates |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2509082C (en) | 2011-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |