CN204327016U - Hydraulic anchor - Google Patents
Hydraulic anchor Download PDFInfo
- Publication number
- CN204327016U CN204327016U CN201420669042.XU CN201420669042U CN204327016U CN 204327016 U CN204327016 U CN 204327016U CN 201420669042 U CN201420669042 U CN 201420669042U CN 204327016 U CN204327016 U CN 204327016U
- Authority
- CN
- China
- Prior art keywords
- anchor
- anchor fluke
- fluke
- elastic component
- return spring
- 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.)
- Active
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a kind of hydraulic anchor.The inner side of return spring and/or outside are set with the compensation elastic component be between pressing plate and anchor fluke, compensate elastic component in closed hole along have in the stroke of anchor body radial expansion on the internal face that the outer end of anchor fluke is anchored on sleeve pipe time inwardly push up pressure anchor fluke punctured bit, for being stretched over natural length and the extending position of throwing off with pressing plate and/or anchor fluke after anchor fluke returns to closed hole completely.Thus type by compensate in the inner side of return spring and/or arranged outside elastic component slow down move outside anchor fluke speed, accelerate the speed of moving in anchor fluke, also realize the effect of two-stage damping simultaneously, anchor fluke is made to be subject to larger jacking force at the initial period of return, simultaneously also reducing by compensating elastic component the load that return spring bears, slowing down the injuring speed of return spring.
Description
Technical field
The utility model relates to a kind of hydraulic anchor.
Background technology
Hydraulic anchor is that the operations involving high pressures such as a kind of oil field well water filling, pressure break, acidifying fix the conventional downhole tool of tubing string.Its operating principle is: the top of hydraulic anchor is connected with working string, bottom connects the downhole tool such as packer, injection well downhole flow regulator, after injecting highly pressurised liquid in oil pipe, the anchor fluke being arranged on hydraulic anchor can outwards movement under the pressure effect of anchor body inside, occlusion tooth on anchor fluke outer face can with the internal face grappling of sleeve pipe, play fixing tubing string effect; After oil pipe inner high voltage liquid is released, anchor fluke again can under the effect of spring force return, along with tubing string trips out.
At present, commercially available hydraulic anchor is structure disclosed in Chinese patent literature 201220730518.7, comprise the anchor body of pipe box shape, anchor body offers the closed hole that radial direction runs through, closed hole is equipped be in and moves the anchor fluke be assemblied in closed hole and the pressing plate be installed on aperture, closed hole outer end along anchor body radially-directed, between pressing plate and anchor fluke, be equipped with return spring.Wherein return spring is push up the single cylindrical screw stage clip be contained between anchor fluke and pressing plate, although this return spring can ensure that anchor fluke departs from from the internal face of sleeve pipe in the ordinary course of things, but in actual use, after on the internal face at highly pressurised liquid anchor fluke being anchored on sleeve pipe, the elastic force of return spring is too small, and anchor fluke is difficult to throw off from the internal face of sleeve; And if the elastic force of return spring is excessive, return spring and pressing plate are difficult to again be assembled on anchor body, thus make this hydraulic anchor there is assembling inconvenience and the insecure problem of anchor fluke return, affect normal oil field operation.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic anchor, is intended to solve the problem that inconvenience installed by the unreliable and pressing plate of anchor fluke return in prior art and return spring.
In order to realize above object, in the utility model, the technical scheme of hydraulic anchor is as follows:
Hydraulic anchor, comprise canular anchor body, anchor body offers the closed hole radially running through tube wall, closed hole is equipped with the pressing plate that radially guiding movement is assemblied in the anchor fluke in closed hole and is fixed on aperture, closed hole outer end, be top-loaded with for the return spring to pushing tow anchor fluke in anchor body between pressing plate and anchor fluke, the inner side of return spring and/or outside are set with the compensation elastic component be between pressing plate and anchor fluke, compensate elastic component in closed hole along have in the stroke of anchor body radial expansion on the internal face that the outer end of anchor fluke is anchored on sleeve pipe time inwardly push up pressure anchor fluke punctured bit, for being stretched over natural length and the extending position of throwing off with pressing plate and/or anchor fluke after anchor fluke returns to closed hole completely.
Compensating elastic component is be sleeved on inside return spring and/or the screw cylindrical stage clip in outside, and the natural length compensating elastic component is less than the length that anchor fluke returns to return spring after closed hole completely.
Compensate the inner side that elastic component is coaxially assemblied in return spring.
The cell location of anchor fluke, return spring and compensation elastic component composition is elasticity anchor unit, elasticity anchor unit has more than one group, the elasticity anchor unit that often group elasticity anchor unit is arranged at anchor body axially spaced-apart by two or more forms, and the top, outer end with elasticity anchor unit each in group is contained in same as on the axially extended pressing plate of anchor body.
Elasticity anchor unit have more than two and anchor body circumference uniformly at intervals.
Elasticity anchor unit has three groups, and often group has two elasticity anchor unit.
The part for the liquid effects injected in anchor intracoelomic cavity be defined as on outer occlusal surface, inner face for the part be connected with the internal face grappling of sleeve pipe on the outer face of anchor fluke is defined as interior pressure-bearing surface, and the area of interior pressure-bearing surface is less than outer occlusal area.
The outer peripheral face of anchor fluke offers the seal groove of annular, in seal groove, be equipped with the sealed packing be sealed and matched with the wall surface of the hole side face of closed hole.
In the utility model, the inner side of return spring and/or outside are set with the compensation elastic component be between pressing plate and anchor fluke, compensate elastic component in closed hole along have in the stroke of anchor body radial expansion on the internal face that the outer end of anchor fluke is anchored on sleeve pipe time inwardly push up pressure anchor fluke punctured bit, for being stretched over natural length and the extending position of throwing off with pressing plate and/or anchor fluke after anchor fluke returns to closed hole completely.In use, inject highly pressurised liquid in the inner chamber of anchor body after, highly pressurised liquid will act on the inner face of anchor fluke, under the promotion of highly pressurised liquid, overcome return spring to make anchor fluke and compensate the elastic force of elastic component and outwards movement, and in the process of the outside movement of anchor fluke, when return elastic component starts to be compressed, compensate elastic component to throw off with pressing plate and/or anchor fluke, return spring is now only had to apply to stop the damping force of its outside movement to anchor fluke, and compress along with the continuation of return spring, compensate elastic component will be clamped between anchor fluke and pressing plate, and compressed gradually along with outer the moving of anchor fluke, now compensate elastic component and return spring by together with apply to stop its outer damping force of moving to anchor fluke, until the outer end of anchor fluke be anchored on sleeve pipe internal face on compensate the interior ejection pressure that elastic component and return spring be applied to anchor fluke and also reach maximum, after anchor body mesohigh liquid is released, anchor fluke will by compensation elastic component inside pushing tow and get back to initial position together with return spring, in the process, when anchor fluke starts to move inward, anchor fluke by be subject to compensate elastic component apply together with return spring in push away elastic force, and along with moving in anchor fluke, compensating elastic component and throwing off with anchor fluke gradually, until the later stage relies on return spring inwardly to promote anchor fluke completely.Therefore the utility model by compensate in the inner side of return spring and/or arranged outside elastic component slow down move outside anchor fluke speed, accelerate the speed of moving in anchor fluke, also realize the effect of two-stage damping simultaneously, anchor fluke is made to be subject to larger jacking force at the initial period of return, simultaneously also reduce by compensating elastic component the load that return spring bears, slow down the injuring speed of return spring, thus solve the unreliable and pressing plate of anchor fluke return in prior art.In addition, after anchor fluke is returned to initial position, compensate elastic component to throw off with pressing plate and/or anchor fluke, so at hydraulic anchor assembling stage, compensating elastic component is can not cause obstruction to the installation of anchor fluke on anchor body, even if so in use the rigidity of return spring has certain error, the rigidity that also can compensate elastic component makes up, thus return elastic component can choose the less spring of some rigidity of being convenient to install, also just solve return spring in prior art and the problem of inconvenience is installed.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of anchor fluke in Fig. 1.
Detailed description of the invention
The embodiment of hydraulic anchor in the utility model: as depicted in figs. 1 and 2, this hydraulic anchor is a kind of anchoring device be applicable on oilfield exploitation tubing string, comprise the canular anchor body 1 of downward-extension, the tube wall of anchor body 1 circumferentially there are three elasticity anchor assemblies uniformly at intervals, each elasticity anchor assemblies is made up of one group of elasticity anchor unit, a pressing plate 4 and three trip bolts 2, often organize elasticity anchor unit again by two between the upper and lower every elasticity anchor unit form.Pressing plate 4 is the strip plate body being fixed on the upper downward-extension on the outer peripheral face of anchor body 1 by three trip bolts 2.Elasticity anchor unit is made up of anchor fluke 3, return spring 5 and compensation elastic component 6, anchor fluke 3 moves in the closed hole being assemblied in and the tube wall of anchor body 1 is offered along anchor body 1 radially-directed, return spring 5 top is contained between anchor fluke 3 and pressing plate 4, compensate elastic component 6 for being assemblied in the screw cylindrical stage clip between anchor fluke 3 and pressing plate 4, compensate elastic component 6 to be sleeved on inside return spring 5, and compensation elastic component 6 is in natural length and throws off with pressing plate 4 when anchor fluke 3 is in initial position.
Anchor fluke 3 is the cylinders extended along anchor body 1 radial direction.The outer peripheral face of the inner of anchor fluke 3 offers the seal groove 31 of annular, in seal groove 31, be embedded with the sealed packing be sealed and matched with the wall surface of the hole side face of closed hole; The outer peripheral face of the outer end of anchor fluke 3 is convexly equipped with the location convex shoulder 32 of annular, to make the outer end of anchor fluke 3 than inner thick.The inner face of anchor fluke 3 is contact pressure-bearing surface 35 in the highly pressurised liquid effect that supplies to inject in anchor body 1 inner chamber with gas in anchor body 1 inner chamber, the part that the outer face of anchor fluke 3 is provided with anchor tooth is the outer occlusal surface 36 be connected to for grappling on the internal face of sleeve pipe, and in the area ratio of outer occlusal surface 36, the area of pressure-bearing surface 35 is large.The outer face of anchor fluke 3 offers the pressing plate groove 33 of the upper downward-extension of the yi word pattern of supply plate 4 setting-in, and the outer end opening extended along anchor body 1 radial direction, the inner assembling blind hole 34 closed is offered at the bottom land place of pressing plate groove 33, this assembling blind hole 34 coaxially loads for return spring 5 and compensation elastic component 6, and the top, the inner of return spring 5 and compensation elastic component 6 is contained on the Closed End of assembling blind hole 34, outer end Ke Ding is contained on the interior plate face of pressing plate 4.
Return spring 5 all pushes up and is contained between anchor fluke 3 and pressing plate 4 before and after anchor fluke 3 moves, and compensate elastic component 6 when anchor fluke 3 is in initial position and throw off with pressing plate 4, compensate the natural length of elastic component 6 and be less than the length that anchor fluke 3 returns to return spring 5 after closed hole completely, such compensation elastic component 6 in closed hole along inwardly push up when having in the stroke of anchor body 1 radial expansion on the internal face that the outer end of anchor fluke 3 is anchored on sleeve pipe pressure anchor fluke 3 punctured bit, natural length is stretched over and the extending position of throwing off with pressing plate 4 after anchor fluke 3 returns to closed hole completely, to form two-stage damping between anchor fluke 3 and pressing plate 4, realize the anchored mode that rewind stretched slowly by anchor fluke 3, namely when anchor fluke 3 is in initial position, the outer end compensating elastic component 6 is spaced with the interior plate face of pressing plate 4.
The endoporus of anchor body 1 is followed successively by macropore section, taper hole section and aperture section from top to bottom, wherein macropore section is wall surface of the hole is established female screw section, when taper hole section is installed for lining, feel relieved spacing assembling in the upper end of lining, and the wall surface of the hole of aperture section is used for coordinating with the outer peripheral face necking section of lining and forming annular gap.Closed hole is three grades of stepped holes that the outer imperial palace be opened on the hole wall of aperture section is little, the between outer land terrace of annular outwardly and interior step surface is provided with in this stepped hole, wherein between outer land terrace is used for the location convex shoulder 32 of block at anchor fluke 3, and interior step surface is for the peripheral edge portion of block at the inner face of anchor fluke 3.
In the present embodiment, in hydraulic anchor, the interior pressure-bearing surface 35 of anchor fluke 3 is less than outer occlusal surface 36, be equivalent to the occlusal surface area of grappling increase, pressure diminishes, and when outwards movement is engaged grappling with sleeve pipe to anchor fluke 3 pressure-bearing, slow down anchor fluke 3 and produces excessive occlusal injury because pressure-bearing is too high to sleeve pipe; Anchor body 1 is provided with six closed holes, has both met the requirement of the certain anchorage force of equipment, and simultaneously the quantity of closed hole is reduced to minimum, effectively simplifies the manufacturing procedure of hydraulic anchor, reduces its processing cost; The return spring 5 and compensation elastic component 6 that vary in size are equipped with in the centre of anchor fluke 3, and such anchor fluke 3 more easily resets, and improves safety and the life-span of hydraulic anchor.
In the above-described embodiments, compensating elastic component is screw cylindrical stage clip, and in other embodiments, compensating elastic component also can be elastic cushion block, elastic bag etc.Compensate the inner side that elastic component can be arranged on return spring simultaneously, also can be arranged on the outside compensating elastic component.
Claims (8)
1. hydraulic anchor, comprise canular anchor body, anchor body offers the closed hole radially running through tube wall, closed hole is equipped with the pressing plate that radially guiding movement is assemblied in the anchor fluke in closed hole and is fixed on aperture, closed hole outer end, be top-loaded with for the return spring to pushing tow anchor fluke in anchor body between pressing plate and anchor fluke, it is characterized in that, the inner side of return spring and/or outside are set with the compensation elastic component be between pressing plate and anchor fluke, compensate elastic component in closed hole along have in the stroke of anchor body radial expansion on the internal face that the outer end of anchor fluke is anchored on sleeve pipe time inwardly push up pressure anchor fluke punctured bit, for being stretched over natural length and the extending position of throwing off with pressing plate and/or anchor fluke after anchor fluke returns to closed hole completely.
2. hydraulic anchor according to claim 1, is characterized in that, compensating elastic component is be sleeved on inside return spring and/or the screw cylindrical stage clip in outside, and the natural length compensating elastic component is less than the length that anchor fluke returns to return spring after closed hole completely.
3. hydraulic anchor according to claim 2, is characterized in that, compensates the inner side that elastic component is coaxially assemblied in return spring.
4. the hydraulic anchor according to claim 1 or 2 or 3, it is characterized in that, the cell location of anchor fluke, return spring and compensation elastic component composition is elasticity anchor unit, elasticity anchor unit has more than one group, the elasticity anchor unit that often group elasticity anchor unit is arranged at anchor body axially spaced-apart by two or more forms, and the top, outer end with elasticity anchor unit each in group is contained in same as on the axially extended pressing plate of anchor body.
5. hydraulic anchor according to claim 4, is characterized in that, elasticity anchor unit have more than two and anchor body circumference uniformly at intervals.
6. hydraulic anchor according to claim 5, is characterized in that, elasticity anchor unit has three groups, and often group has two elasticity anchor unit.
7. the hydraulic anchor according to claim 1 or 2 or 3, it is characterized in that, the part for the liquid effects injected in anchor intracoelomic cavity be defined as on outer occlusal surface, inner face for the part be connected with the internal face grappling of sleeve pipe on the outer face of anchor fluke is defined as interior pressure-bearing surface, and the area of interior pressure-bearing surface is less than outer occlusal area.
8. the hydraulic anchor according to claim 1 or 2 or 3, is characterized in that, the outer peripheral face of anchor fluke offers the seal groove of annular, is equipped with the sealed packing be sealed and matched with the wall surface of the hole side face of closed hole in seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669042.XU CN204327016U (en) | 2014-11-11 | 2014-11-11 | Hydraulic anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669042.XU CN204327016U (en) | 2014-11-11 | 2014-11-11 | Hydraulic anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327016U true CN204327016U (en) | 2015-05-13 |
Family
ID=53163388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420669042.XU Active CN204327016U (en) | 2014-11-11 | 2014-11-11 | Hydraulic anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327016U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502610A (en) * | 2020-05-29 | 2020-08-07 | 西安石油大学 | Mechanical vibration damper for perforating section pipe column |
-
2014
- 2014-11-11 CN CN201420669042.XU patent/CN204327016U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502610A (en) * | 2020-05-29 | 2020-08-07 | 西安石油大学 | Mechanical vibration damper for perforating section pipe column |
| CN111502610B (en) * | 2020-05-29 | 2021-11-30 | 西安石油大学 | Mechanical vibration damper for perforating section pipe column |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204436320U (en) | A kind of hydraulic releasing big orifice packer | |
| CN201778735U (en) | Steel wire rope blanking plug for subsea production tree | |
| CN111456672B (en) | Hydraulic expansion type packer | |
| CN104047563B (en) | Deblocking packer is pressed under hydraulic setting | |
| CN203978373U (en) | Hydraulic setting presses down deblocking packer | |
| CN203702047U (en) | Anchoring structure and downhole plugging device | |
| CN103742099B (en) | Perforating and fracturing packing device | |
| CN204327016U (en) | Hydraulic anchor | |
| CN201661268U (en) | Compensation type pilot-operated water injection packer | |
| CN202273619U (en) | Drilling-type prestress well cementation ground anchor | |
| CN207813539U (en) | Hydraulic anchoring device | |
| CN204175233U (en) | Desirablely bore anchor packer | |
| CN201021612Y (en) | Separation device for dense SAGD steam driven gas injection well | |
| CN204457578U (en) | Packer (CN) | |
| CN203488141U (en) | Tubing plug | |
| CN204186332U (en) | Down-hole equipment release device | |
| CN203879448U (en) | Casing protected gas injection packer for CO2 injection well | |
| CN202706985U (en) | Hydraulic machinery integrated bridge plug | |
| CN110965957B (en) | Blocking tool in oil pipe | |
| CN203742545U (en) | Combined drill pipe rubber plug | |
| CN207161041U (en) | A kind of compression type open hole packer | |
| CN104314500A (en) | Underground drilling rig unfreezing device and underground drilling rig unfreezing method | |
| CN204186346U (en) | Slips anchoring formula high-temperature packer | |
| CN204941402U (en) | Grappling water booster system | |
| CN204061907U (en) | A kind of rolling support formula seal arrangement of rectangular shield push-bench relay well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |