CN114183101B - Anchor for oil well casing - Google Patents
Anchor for oil well casing Download PDFInfo
- Publication number
- CN114183101B CN114183101B CN202210137668.5A CN202210137668A CN114183101B CN 114183101 B CN114183101 B CN 114183101B CN 202210137668 A CN202210137668 A CN 202210137668A CN 114183101 B CN114183101 B CN 114183101B
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- Prior art keywords
- pipe
- pressurizing
- driving
- anchor
- chamber
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- 239000003129 oil well Substances 0.000 title claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims abstract description 49
- 238000009434 installation Methods 0.000 claims abstract description 35
- 210000000078 claw Anatomy 0.000 claims abstract description 33
- 230000007480 spreading Effects 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000005086 pumping Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 55
- 238000000034 method Methods 0.000 description 31
- 230000008569 process Effects 0.000 description 28
- 230000001965 increasing effect Effects 0.000 description 14
- 239000012530 fluid Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
Abstract
The invention provides an anchor for an oil well casing, which relates to the technical field of anchors and comprises a casing and an anchor arranged in the casing, wherein the anchor comprises a first installation pipe, a tensioning pipe, a spreading pipe and a second installation pipe which are sequentially distributed, an annular chamber is arranged in the first installation pipe, the first end of the tensioning pipe extends into the annular chamber and is in sliding connection with the annular chamber, the second end of the tensioning pipe is fixedly connected with the lower end of the spreading pipe, a plurality of anchoring installation openings are formed in the side wall of the first installation pipe, wedge-shaped anchoring claws are rotatably connected in the anchoring installation openings, a plurality of wedge-shaped surfaces matched with the anchoring claws are formed in the side wall of the spreading pipe, an annular piston is in sliding connection in the annular chamber, and the annular piston is fixedly connected with the tensioning pipe. The invention solves the problem of how to fasten the anchor after the anchor loosens in the sleeve.
Description
Technical Field
The invention relates to the technical field of anchors, in particular to an anchor for an oil well casing.
Background
The anchor fixes the oil pipe in the casing pipe by using friction force, prevents the oil pipe from moving and contracting in the oil pumping process, anchors the oil pipe by arranging the anchor, can reduce stroke loss and improves oil pumping efficiency.
Most of current anchors are through strutting the anchor, let anchoring claw and sleeve pipe inner wall support tightly, increase frictional force between the two, and then reach the effect fixed to anchor and oil pipe, the mode of strutting anchoring claw is multiple, wherein the hydraulic drive mode is comparatively ripe, but hydraulic drive's mode has the dynamics of strutting limitedly, hydraulic oil pressure reduces in the middle of the process of long-term anchoring, make anchoring claw promptly the dynamics reduce, influence the stability of anchor, not hard up anchor can be along with synchronous motion in the middle of the flexible process of oil pipe, influence the efficiency of oil recovery.
Disclosure of Invention
In view of the above problems, the present invention provides an anchor for an oil well casing, which solves the problem of how to fasten the anchor after loosening in the casing.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the utility model provides an oil well is anchor for sleeve pipe, includes the sleeve pipe and installs in the intraductal anchor of sleeve, the anchor is including the first installation pipe that distributes in proper order, stretch out the pipe, strut pipe and second installation pipe, be equipped with annular chamber in the first installation pipe, stretch out the first end of pipe and extend to the annular chamber indoor and sliding connection with it, stretch out the pipe second end and strut a lower extreme fixed connection, first installation pipe lateral wall is opened there are a plurality of anchoring installing ports, it is connected with wedge-shaped anchoring claw to rotate in the anchoring installing port, strut the pipe lateral wall and open the wedge face that has a plurality of and anchoring claw adaptation, the indoor sliding connection of annular chamber has annular piston, annular piston and taut pipe fixed connection, annular piston is divided into upper chamber and lower cavity with annular chamber, the upper chamber intercommunication has the drive tube, the external oil pumping equipment of drive tube, first installation pipe lateral wall is opened there is the pressure boost groove, pressure boost inslot wall rotates and is connected with the pressure boost board, the pressure boost of cover inside pipe wall fixedly connected with and pressure boost board adaptation is protruding, be equipped with the pressure boost mechanism that can strengthen epicoele indoor pressure in the pressure boost inslot, pressure boost mechanism is including being located the pressure boost pipe of pressure boost inslot, sliding connection has the pressure boost piston in the pressure boost pipe, through elastic component elastic connection between pressure boost piston and the pressure boost pipe, pressure boost piston lateral wall fixedly connected with pressure boost pole, pressure boost pole end runs through pressure boost pipe and sliding connection with it, pressure boost pole end offsets with the pressure boost board, be connected with first torsion spring between pressure boost board and the pressure boost groove, pressure boost bottom of tubes end intercommunication has two pump oil pipe, be equipped with the check valve in the pump oil pipe, first pump oil pipe end and epicoele room intercommunication.
Preferably, in order to enable the supercharging device to move towards the bottom end of the supercharging plate and improve the oil pumping supercharging efficiency of the supercharging device, a threaded rod is connected in the supercharging groove in a rotating mode, a mounting seat in sliding connection with the inner wall of the supercharging groove is connected to the threaded rod in a threaded mode, the supercharging pipe is fixedly connected with the mounting seat, a driving cavity is arranged in the first mounting pipe, and a driving mechanism for driving the threaded rod to rotate is arranged in the driving cavity.
Preferably, in order to realize the rotation of the threaded rod synchronously in the process of swinging the pressure increasing plate left and right, the driving mechanism comprises a pair of bevel gears which are meshed with each other, the bevel gears are rotatably connected with the inner wall of the driving chamber, the first bevel gear is fixedly connected with the threaded rod, the second bevel gear is in a hollow annular shape, the inner wall of the second bevel gear is fixedly connected with an inner ratchet wheel, the inner wall of the driving chamber is rotatably connected with a driving shaft, the side wall of the driving shaft is fixedly connected with a driving plate, the side wall of the driving plate is rotatably connected with a plurality of pawls through second torsion springs, the pawls are matched with the inner ratchet wheel, and the driving shaft penetrates through the driving chamber and is fixedly connected with the pressure increasing plate.
Preferably, in order to enable the annular piston and the anchoring claw to automatically return when the pressure in the upper chamber is reduced, the expanding pipe is movably connected with the second mounting pipe through a connecting pipe, a return spring is connected between the annular piston and the inner wall of the annular chamber, and a third torsion spring is connected between the anchoring claw and the anchoring mounting opening.
Preferably, in order to enhance the sealing effect of the anchor, the outer walls of the first mounting pipe and the second mounting pipe are respectively and fixedly connected with elastic sealing sleeves, and the sealing sleeves are respectively positioned on the outer sides of the first mounting pipe and the second mounting pipe.
The invention has the beneficial effects that:
1. through setting up pressure boost plate and pressure boost arch, when the anchor moves along with oil pipe shrink from top to bottom in the cover intraductal process as the in-process, the protruding contact with pressure boost plate that can be interrupted of pressure boost, pressure boost plate extrusion inboard pressurization mechanism can go into fluid to the indoor pump of epicoele through the pump oil pipe, can strengthen the indoor pressure of epicoele, let not hard up anchoring claw and the more stable of cover intraductal wall anchoring, guaranteed the stability of recovering oil.
2. Through setting up the pivoted threaded rod and can driving the mount pad and descend, in the middle of the process that the mount pad descends, the pressure boost pole can with pressure boost plate bottom contact, and then increased the stroke that the pressure boost pole removed, guarantee the efficiency of booster mechanism pump oil, let the anchor can grasp with the sleeve pipe sleeve inner wall sooner, further guaranteed the stability of recovering oil.
3. Through setting up actuating mechanism can be in the middle of the pivoted automatic rotation that realizes the threaded rod of pressure boost plate, compare with setting up electronic drive arrangement, the security is higher, and is more reliable and more stable accurate.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A of the present invention;
FIG. 4 is an enlarged view of the structure at B of the present invention;
fig. 5 is a schematic structural diagram of the driving mechanism of the present invention.
In the figure: the device comprises a sleeve pipe 1, a sealing sleeve 2, a first mounting pipe 3, an anchoring claw 4, a tensioning pipe 5, a wedge-shaped surface 6, a distraction pipe 7, a connecting pipe 8, a second mounting pipe 9, a pressurization protrusion 10, a pressurization groove 11, a pressurization plate 12, a threaded rod 13, a mounting seat 14, a pump oil pipe 15, a pressurization pipe 16, a pressurization piston 17, a pressurization rod 18, a driving shaft 19, a bevel gear 20, an inner ratchet wheel 21, a pawl 22, a driving disc 23, an annular piston 24, an annular chamber 25 and a driving pipe 26.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Referring to fig. 1-5, an anchor for an oil well casing comprises a casing 1 and an anchor installed in the casing 1, the anchor comprises a first installation pipe 3, a tension pipe 5, a spreading pipe 7 and a second installation pipe 9 which are distributed in sequence, an annular chamber 25 is arranged in the first installation pipe 3, a first end of the tension pipe 5 extends into the annular chamber 25 and is connected with the annular chamber in a sliding manner, a second end of the tension pipe 5 is fixedly connected with the lower end of the spreading pipe 7, a plurality of anchoring installation openings are formed in the side wall of the first installation pipe 3, wedge-shaped anchoring claws 4 are rotatably connected in the anchoring installation openings, wave-shaped protrusions are arranged on the outer side walls of the anchoring claws 4 and can increase the friction force between the wave-shaped protrusions and the inner wall of the casing 1, a plurality of wedge-shaped surfaces 6 matched with the anchoring claws 4 are formed on the side wall of the spreading pipe 7, the first installation pipe 3 faces downwards, the anchor is placed into a designated position in the casing 1, in oil pipe is fixed and the anchor, fixed back that finishes, the drive is drawn tightly pipe 5 and is descended, draws tightly the in-process that pipe 5 descends and to drive wedge-shaped surface 6 and descend, and wedge-shaped surface 6 cooperatees with anchoring claw 4 that corresponds this moment, can strut anchoring claw 4 that corresponds, and the anchoring claw 4 that struts supports tightly with sleeve pipe 1 inner wall, can increase the frictional force between its and the sleeve pipe 1 inner wall, can fix spacingly to the anchor, guarantees its stability.
An annular piston 24 is connected in the annular chamber 25 in a sliding manner, the annular piston 24 is fixedly connected with the tensioning tube 5, the annular chamber 25 is divided into an upper chamber and a lower chamber by the annular piston 24, the upper chamber is communicated with a driving tube 26, the driving tube 26 is externally connected with an oil pumping device, the oil pumping device pumps oil into the upper chamber through the driving tube 26, at the moment, the annular piston 24 is subjected to pressure reduction, the annular piston 24 can drive the opening tube 7 to descend through the tensioning tube 5 in the descending process, further, the synchronous opening of the anchoring claws 4 is completed, the anchoring process of the anchor and the inner wall of the sleeve 1 is completed, a pressurizing groove 11 is formed in the side wall of the first mounting tube 3, a pressurizing plate 12 is rotatably connected to the inner wall of the pressurizing groove 11, a pressurizing protrusion 10 matched with the pressurizing plate 12 is fixedly connected to the inner wall of the sleeve 1, a pressurizing mechanism capable of enhancing the pressure in the upper chamber is arranged in the pressurizing groove 11, and the pressurizing plate 12 is used as a driving element, can drive booster mechanism, after the pressure drop of the interior fluid of last cavity, can increase fluid to the cavity of going up through booster mechanism, increase the indoor pressure in the cavity of going up, and then guaranteed that anchoring claw 4 is in normal state of opening, guarantee the stability of anchor.
The pressurizing mechanism comprises a pressurizing pipe 16 positioned in a pressurizing groove 11, a pressurizing piston 17 is connected in the pressurizing pipe 16 in a sliding way, the pressurizing piston 17 is elastically connected with the pressurizing pipe 16 through an elastic part, a pressurizing rod 18 is fixedly connected with the side wall of the pressurizing piston 17, the tail end of the pressurizing rod 18 penetrates through the pressurizing pipe 16 and is in sliding connection with the pressurizing pipe, the tail end of the pressurizing rod 18 is abutted against a pressurizing plate 12, a first torsion spring is connected between the pressurizing plate 12 and the pressurizing groove 11, the bottom end of the pressurizing pipe 16 is communicated with two pump oil pipes 15, a one-way valve is arranged in each pump oil pipe 15, the tail end of the first pump oil pipe 15 is communicated with an upper chamber, when an anchoring claw 4 on the side wall of the anchor loosens with the inner wall of a sleeve 1, the anchor moves up and down along with the oil pipes, the pressurizing plate 12 on the side wall is contacted with a pressurizing bulge 10 at a specified position in the up and down process of the anchor, and left and right swinging of the pressurizing plate 12 in the contacting process, the pressurizing rod 18 is extruded to move back and forth in the swinging process of the pressurizing plate 12, the pressurizing piston 17 in the pressurizing pipe 16 is synchronously pushed to move, the pressurizing piston 17 is moved back and forth left and right under the action of the elastic piece, in the process, oil located at the lower end can be sucked into the pressurizing pipe 16 through the pump oil pipe 15, a storage chamber can also be arranged in the first mounting pipe 3, the second pump oil pipe 15 is communicated with the storage chamber, the oil in the storage chamber is pumped into the upper chamber, at the moment, the lower end of the first mounting pipe 3 is not required to be tightly attached to the oil, the stability of the pressurizing process is ensured, the oil is pumped into the upper chamber through the pressurizing pipe 16 finally, the increase of the oil in the upper chamber is realized, and the elastic piece can adopt a common spring structure.
The anchor is in the in-process that reciprocates, can pump into fluid to the cavity in through booster mechanism, increase the indoor pressure in epicoele, annular piston 24 receives pressure drop this moment, this process is in the middle of the pipe 5 that draws tightly drives to strut and is managed 7 shrink, this moment anchoring claw 4 further strut, increase its and the frictional force of sleeve pipe 1 inner wall, a period of time later, the anchor is in stable state, pressure increasing plate 12 also no longer removes, the normal clear of oil pipe oil recovery has been guaranteed.
The threaded rod 13 is rotatably connected in the pressurizing groove 11, the threaded rod 13 is connected with the mounting seat 14 which is in sliding connection with the inner wall of the pressurizing groove 11 in a threaded manner, the pressurizing pipe 16 is fixedly connected with the mounting seat 14, a driving cavity is arranged in the first mounting pipe 3, a driving mechanism for driving the threaded rod 13 to rotate is arranged in the driving cavity, the threaded rod 13 can drive the mounting seat 14 to descend in the rotating process, the pressurizing mechanism on one side can be driven to move towards the lower end of the pressurizing plate 12 in the descending process of the mounting seat 14, the contact position of the pressurizing rod 18 and the pressurizing plate 12 changes accordingly, the pressurizing plate 12 swings at the same angle, the extrusion effect of the pressurizing rod 18 is increased, the pressurizing rod is deeper, the oil pumping force is increased accordingly, the oil can be pumped into the upper cavity normally, the oil pumping efficiency can be guaranteed, and the stability of the anchor is guaranteed.
The driving mechanism comprises a pair of bevel gears 20 which are meshed with each other, the bevel gears 20 are rotationally connected with the inner wall of the driving chamber, the first bevel gear 20 is fixedly connected with the threaded rod 13, the second bevel gear 20 is hollow and annular, the inner wall of the second bevel gear 20 is fixedly connected with an inner ratchet wheel 21, the inner wall of the driving chamber is rotationally connected with a driving shaft 19, the side wall of the driving shaft 19 is fixedly connected with a driving disc 23, the side wall of the driving disc 23 is rotationally connected with a plurality of pawls 22 through second torsion springs, the pawls 22 are matched with the inner ratchet wheel 21, the driving shaft 19 penetrates through the driving chamber and is fixedly connected with the pressure increasing plate 12, the pressure increasing plate 12 can drive the driving disc 23 to rotate through the driving shaft 19 in the swinging process, the side wall of the driving disc 23 is provided with the plurality of pawls 22, the pawls 22 are matched with the inner ratchet wheel 21, at the moment, the corresponding bevel gears 20 can be driven to directionally rotate, and the two bevel gears 20 are matched, the threaded rod 13 can be driven to synchronously rotate, and then the process of driving the threaded rod 13 is completed.
When the anchor needs to be taken out, at the moment, only the valve in the driving pipe 26 needs to be opened, oil in the upper cavity is discharged through the driving pipe 26, the return spring is connected between the annular piston 24 and the annular cavity 25, under the action of the return spring, the oil in the upper cavity can be discharged through the driving pipe 26, each part of the anchor resets, the opening pipe 7 is far away from the first installation pipe 3, the anchoring claw 4 can reset under the action of the third torsion spring, at the moment, the anchoring claw 4 is separated from the inner wall of the sleeve pipe 1, and the anchor can be taken out.
Prop and open and to pass through 8 swing joint of connecting pipe between pipe 7 and the second installation pipe 9, first installation pipe 3 and the elastic seal cover 2 of second installation pipe 9 outer wall difference fixed connection, seal cover 2 is located the outside of first installation pipe 3 and second installation pipe 9 respectively, both ends about seal cover 2 is located, can play spacing fixed effect to the anchor on the one hand, guarantee that it is in relative stable state in sleeve pipe 1, can block completely cutting off to the fluid in sleeve pipe 1 on the other hand, let fluid be in the below of anchor, guarantee the stability of oil recovery process.
In the working process of the invention, one end of a first installation pipe 3 of an anchor is placed downwards and enters a specified position in a sleeve 1, oil is pumped into an upper chamber by an oil pumping device through a driving pipe 26, the oil in the upper chamber is increased, an annular piston 24 can be pushed to descend, the annular piston 24 can drive a spreading pipe 7 to descend through a tensioning pipe 5 in the descending process, a wedge-shaped surface 6 on the side wall of the spreading pipe 7 can be contacted with an anchoring claw 4 in the descending process, the anchoring claw 4 can be spread, the spread anchoring claw 4 is abutted against the inner wall of the sleeve 1, the friction force between the spread anchoring claw 4 and the inner wall of the sleeve 1 is increased, the hydraulic oil is continuously pumped in the descending process, the pressure of the oil in the upper chamber is increased, the abutment between the anchoring claw 4 and the inner wall of the sleeve 1 is more stable, the anchor is fixed with the inner wall of the sleeve 1, the stability of the oil extraction process is ensured, and after the anchor is stabilized, the valve in the driving pipe 26 is closed to keep the amount of oil in the upper chamber constant, so as to ensure that the internal pressure is in a rated state and the stability of the anchor is ensured.
Oil pipe can shrink the motion in the middle of the process of oil recovery, and the anchor receives the effect of power, and the anchor is in the middle of the process of long-term work, and the pressure of the interior fluid of cavity reduces, and the frictional force between anchoring claw 4 and the 1 inner wall of sleeve pipe descends this moment, and the anchor lacks sufficient restriction, reciprocates along with oil pipe's shrink, influences the efficiency of oil recovery.
The anchor can be brought into contact between the pressurizing plate 12 of its side wall and the pressurizing projection 10 inside the casing 1 during the up-and-down movement, under the limit of the pressurizing projection 10 and the action of the first torsion spring, the pressurizing plate 12 swings left and right and moves back and forth, the pressurizing rod 18 is extruded in the process of the reciprocating swing of the pressurizing plate 12, the pressurizing rod 18 contracts and moves repeatedly under the action of the pressurizing plate 12 and the elastic piece, oil in the sleeve 1 is sucked into the pressurizing pipe 16 through the second oil pumping pipe 15, and the pressure in the upper chamber is increased, the annular piston 24 can be pushed to descend at the moment, the anchoring claw 4 is tightly abutted to the inner wall of the sleeve 1, the friction force is increased, the anchor is recovered to be stable, the pressure increasing plate 12 stops swinging after the anchor is stabilized, and the whole anchor is recovered to be in the original state.
In the process of reciprocating swing of the pressurizing plate 12, the threaded rod 13 can be driven to rotate through the driving mechanism, the mounting seat 14 can be driven to descend in the rotating process of the threaded rod 13, the pressurizing rod 18 can be in contact with the lower end of the pressurizing plate 12 in the descending process of the mounting seat 14, the pressurizing rod 18 can move to a farther position under the action of the pressurizing plate 12 at the moment, the moment between the pressurizing rod 18 and the pressurizing plate 12 is shortened, and the oil pumping efficiency of the pressurizing device can be further improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The anchor for the oil well casing comprises a casing (1) and an anchor installed in the casing (1), and is characterized in that the anchor comprises a first installation pipe (3), a tensioning pipe (5), a spreading pipe (7) and a second installation pipe (9) which are sequentially distributed, an annular chamber (25) is arranged in the first installation pipe (3), the first end of the tensioning pipe (5) extends into the annular chamber (25) and is in sliding connection with the annular chamber, the second end of the tensioning pipe (5) is fixedly connected with the lower end of the spreading pipe (7), the side wall of the first installation pipe (3) is provided with a plurality of anchoring installation openings, wedge-shaped anchoring claws (4) are rotatably connected in the anchoring installation openings, and the side wall of the spreading pipe (7) is provided with a plurality of wedge-shaped surfaces (6) matched with the anchoring claws (4);
an annular piston (24) is connected to the annular chamber (25) in a sliding mode, the annular piston (24) is fixedly connected with the tensioning pipe (5), the annular chamber (25) is divided into an upper chamber and a lower chamber by the annular piston (24), the upper chamber is communicated with a driving pipe (26), the driving pipe (26) is externally connected with oil pumping equipment, a pressurizing groove (11) is formed in the side wall of the first mounting pipe (3), a pressurizing plate (12) is rotatably connected to the inner wall of the pressurizing groove (11), a pressurizing protrusion (10) matched with the pressurizing plate (12) is fixedly connected to the inner wall of the sleeve (1), and a pressurizing mechanism capable of enhancing the pressure in the upper chamber is arranged in the pressurizing groove (11);
booster mechanism is including being located booster pipe (16) in booster groove (11), sliding connection has booster piston (17) in booster pipe (16), through elastic component elastic connection between booster piston (17) and booster pipe (16), booster piston (17) lateral wall fixedly connected with pressure boost pole (18), pressure boost pole (18) end runs through booster pipe (16) and sliding connection with it, pressure boost pole (18) end offsets with pressure boost board (12), be connected with first torsion spring between pressure boost board (12) and booster groove (11), booster pipe (16) bottom intercommunication has two pump oil pipe (15), be equipped with the check valve in pump oil pipe (15), first pump oil pipe (15) end and epicoele room intercommunication.
2. An anchoring device for oil well casing according to claim 1, characterized in that a threaded rod (13) is rotatably connected to the pressurizing groove (11), a mounting seat (14) slidably connected to the inner wall of the pressurizing groove (11) is rotatably connected to the threaded rod (13), the pressurizing pipe (16) is fixedly connected to the mounting seat (14), a driving chamber is arranged in the first mounting pipe (3), and a driving mechanism for driving the threaded rod (13) to rotate is arranged in the driving chamber.
3. An oil well casing anchor according to claim 2, wherein the driving mechanism comprises a pair of mutually engaged bevel gears (20), the bevel gears (20) are rotatably connected with the inner wall of the driving chamber, the first bevel gear (20) is fixedly connected with the threaded rod (13), the second bevel gear (20) is in a hollow ring shape, the inner wall of the second bevel gear (20) is fixedly connected with an inner ratchet wheel (21), the inner wall of the driving chamber is rotatably connected with a driving shaft (19), the side wall of the driving shaft (19) is fixedly connected with a driving disc (23), the side wall of the driving disc (23) is rotatably connected with a plurality of pawls (22) through a second torsion spring, the pawls (22) are matched with the inner ratchet wheel (21), and the driving shaft (19) penetrates through the driving chamber and is fixedly connected with the pressurizing plate (12).
4. An anchoring device for oil well casing according to claim 1, characterized in that the said spreading tube (7) is movably connected with the second mounting tube (9) by means of a connecting tube (8), a return spring is connected between the annular piston (24) and the inner wall of the annular chamber (25), and a third torsion spring is connected between the anchoring claw (4) and the anchoring mounting opening.
5. An anchoring device for oil well casing according to claim 1, characterized in that the outer walls of the first installation pipe (3) and the second installation pipe (9) are respectively fixedly connected with an elastic sealing sleeve (2), and the sealing sleeves (2) are respectively positioned at the outer sides of the first installation pipe (3) and the second installation pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210137668.5A CN114183101B (en) | 2022-02-15 | 2022-02-15 | Anchor for oil well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210137668.5A CN114183101B (en) | 2022-02-15 | 2022-02-15 | Anchor for oil well casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183101A CN114183101A (en) | 2022-03-15 |
| CN114183101B true CN114183101B (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210137668.5A Active CN114183101B (en) | 2022-02-15 | 2022-02-15 | Anchor for oil well casing |
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| Country | Link |
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| CN (1) | CN114183101B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997009510A2 (en) * | 1995-09-08 | 1997-03-13 | The Red Baron (Oil Tools Rental) Limited | Tubing anchor and force generator combined wich such an anchor |
| CN2630475Y (en) * | 2003-08-11 | 2004-08-04 | 韩明胜 | Anchored oil-discharging pipe anchor |
| CN205977148U (en) * | 2016-08-27 | 2017-02-22 | 江苏力克石油机械有限公司 | From locking -type water conservancy anchor |
| CN109505547A (en) * | 2018-11-27 | 2019-03-22 | 大庆市晟威机械制造有限公司 | Tubing anchor |
| CN113107406A (en) * | 2021-04-25 | 2021-07-13 | 大庆市晟威机械制造有限公司 | Oil pipe tension anchor for stabilizing oil pipe |
-
2022
- 2022-02-15 CN CN202210137668.5A patent/CN114183101B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997009510A2 (en) * | 1995-09-08 | 1997-03-13 | The Red Baron (Oil Tools Rental) Limited | Tubing anchor and force generator combined wich such an anchor |
| CN2630475Y (en) * | 2003-08-11 | 2004-08-04 | 韩明胜 | Anchored oil-discharging pipe anchor |
| CN205977148U (en) * | 2016-08-27 | 2017-02-22 | 江苏力克石油机械有限公司 | From locking -type water conservancy anchor |
| CN109505547A (en) * | 2018-11-27 | 2019-03-22 | 大庆市晟威机械制造有限公司 | Tubing anchor |
| CN113107406A (en) * | 2021-04-25 | 2021-07-13 | 大庆市晟威机械制造有限公司 | Oil pipe tension anchor for stabilizing oil pipe |
Non-Patent Citations (1)
| Title |
|---|
| 主动伸缩式高温油管柱锚定工艺管柱的研制;李永革;《机电产品开发与创新》;20110928;第24卷(第05期);第33-34页 * |
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| Publication number | Publication date |
|---|---|
| CN114183101A (en) | 2022-03-15 |
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Denomination of invention: An anchor for oil well casing Effective date of registration: 20230215 Granted publication date: 20220607 Pledgee: Guangdong Development Bank Co.,Ltd. Dongying Branch Pledgor: DONGYING ZHAOXIN INDUSTRY AND TRADE CO.,LTD. Registration number: Y2023980032703 |
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