CN105401911A - Packer (CN) - Google Patents
Packer (CN) Download PDFInfo
- Publication number
- CN105401911A CN105401911A CN201510822477.2A CN201510822477A CN105401911A CN 105401911 A CN105401911 A CN 105401911A CN 201510822477 A CN201510822477 A CN 201510822477A CN 105401911 A CN105401911 A CN 105401911A
- Authority
- CN
- China
- Prior art keywords
- cone
- packer
- central tube
- expansion part
- open claws
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 210000000078 claw Anatomy 0.000 claims description 35
- 241000239290 Araneae Species 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 abstract 4
- 239000000203 mixture Substances 0.000 description 11
- 239000003129 oil well Substances 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000638 stimulation 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Piles And Underground Anchors (AREA)
Abstract
The application discloses a packer, which comprises a central pipe, and a locking mechanism, an actuating mechanism, a sealing mechanism and an anchoring mechanism which are arranged outside the central pipe, wherein the actuating mechanism enables the sealing mechanism and the anchoring mechanism to act; the anchoring mechanism includes: the first cone is sleeved outside the central tube and connected with the actuating mechanism so as to be driven by the actuating mechanism; the second cone is sleeved outside the central tube and is positioned below the first cone; the second cone is connected with the central tube through shear pins; the second cone is provided with an expansion piece which can be radially expanded along the central pipe by the first cone; the outer wall surface of the expanded expansion piece can prolong the length of the conical surface of the second cone; slips located below the second cone that can be propped apart by the second cone for anchoring. The application provides a packer can be better be applicable to the casing change well.
Description
Technical field
The present invention about a kind of capping tools for packing bottom oil, gas, water layer in the mine such as oil well, gas well, especially about a kind of packer.
Background technology
Packer is widely used in the mine such as oil well, gas well, is used for packing bottom oil, gas, water layer, is a kind of down-hole plugging instrument safe and reliable, with low cost, multiple functional, applied widely.Packer can with other downhole tool with the use of, carry out temporary blocking, permanent shutoff, selective shut-off and snubbing serving etc.
The packer of retrievable is primarily of executing agency, anchor mechanism, retaining mechanism, sealing mechanism and salvaging mechanism five part composition.Wherein, executing agency is used for realization and sets and deblocking, sets power resources according to executing agency, and packer is mainly divided into that machinery sets, fluid power sets two classes, and executing agency sets pin by cut-out and realizes setting, and realizes deblocking by cutting off deblocking pin.
Anchor mechanism generally includes upper cone, lower cone and dual-grip, is used for packer to be anchored on setting position.
Retaining mechanism usually by exterior central tube, set pin, deblocking pin and various internal locking assembly (as conical ring, lock ring, snap close or lock refer to buckle and ratchet mechanism) and form, for after packer setting, make to sit packer and fixedly remain on the state of setting.
Sealing mechanism generally includes packing element, spacer ring, thrust block pad and glue tube base, is used for after setting, and makes the two ends up and down of packer present sealing partition state.
Salvaging mechanism is different according to the operating principle of salvaging mode, is mainly divided into rotary salvaging mechanism and expansion type salvaging mechanism two kinds, after completing deblocking operation salvages packer to well face for cutting off deblocking pin in executing agency.Wherein rotary salvaging mechanism by salvaging ear, salvage inner orbit and form, under when entering packer, the salvaging ear of packer is imported the inner orbit of fishing tool, makes packer be suspended on the inner orbit of fishing tool; During deblocking, again import packer, rotation pipeline, upper lifting pipe post, completes salvaging simultaneously.This kind of mode is easy to operate, inner orbit and to salvage pulling force suffered by ear comparatively large, higher to the requirement of material.
At present, oil field super-heavy oil deposit mining type mainly adopts the mining type such as steam soak and steam flooding, but along with the growth of recovery time and the raising of round of handling up, casing deformation phenomenon is day by day serious.Meanwhile, long-term many rounds steam injection and other factors, some oil wells occurs that casing failure and distortion form casing deformation well, wherein casing deformation well middle sleeve undergauge or to squeeze flat distortion well more.Can find out, there are two kinds of situations in current casing deformation well: one is for some reason, and the casing inner diameter in somewhere is greater than normal casing inner diameter, and another kind is for some reason, and the sleeve pipe in somewhere is less than normal casing inner diameter.
And then for casing deformation well, likely cannot set or set loosely because the casing inner diameter of setting position becomes large after entering under common packer, also cannot may enter down in sleeve pipe because casing inner diameter diminishes, which results in common packer can not be applied to sleeve shrinking diameter after oil well, make the more difficult realization of such oil well later stage well stimulation, affect the recovery ratio of oil well, limit the exploitation of such oil well.
Summary of the invention
In view of the deficiencies in the prior art, the application provides a kind of packer, becomes requirement that the large normal grappling of well section sets or casing inner diameter and reduces requirement under smooth lower going-into-well, and then be applicable to casing deformation well preferably can meet casing deformation well internal diameter.
For achieving the above object, the application provides a kind of packer, and comprise central tube and the retaining mechanism be located at outside described central tube, executing agency, sealing mechanism and anchor mechanism, described executing agency makes described sealing mechanism and anchor mechanism action; Described anchor mechanism comprises:
Be sheathed on the first cone outside described central tube, it connects described executing agency to be driven by described executing agency;
Be sheathed on the second cone outside described central tube, it is positioned at the below of described first cone; Described second cone connects described central tube by shear pin; Described second cone is provided with expansion part, and described expansion part can be strutted along described central tube radial direction by described first cone; Outside wall surface after described expansion part opens can extend the conical surface length of described second cone;
Be positioned at the slips below described second cone, it can be strutted to carry out grappling by described second cone.
As one preferred embodiment, described expansion part comprises multiple open claws be circumferentially arranged along described second cone; The lower end of described open claws connects described second cone rotationally, and the inner side of its upper end is provided with the conical surface and enters to facilitate described first cone.
As one preferred embodiment, the pivot center of described open claws and the axes normal of described central tube.
As one preferred embodiment, the upper end of described second cone is provided with link slot, and the lower end of described open claws snaps in described link slot and is also connected with described link slot by rotating pin.
As one preferred embodiment, the bottom surface of described open claws and the diapire of described link slot have predeterminable range, and described predeterminable range is less than the distance of the lateral wall line of the bottom surface of described pivot center and described open claws.
As one preferred embodiment, described expansion part is connected with banding part to keep non-softened state.
As one preferred embodiment, described multiple open claws is uniformly distributed along the upper end of described second cone.
As one preferred embodiment, the bottom of described slips is connected with slip spider; Described slip spider is fixedly connected on described central tube.
As one preferred embodiment, described slip spider is connected with described central tube by fixing pin.
As one preferred embodiment, described packer also comprises salvaging mechanism.
By describing above and can finding out, the packer that the application provides forms secondary cone structure by the first cone, the second cone, by the first cone, expansion part is strutted, the conical surface length of the second cone is extended again by the outside wall surface after expansion part opens, and then the outside wall surface of the second cone also by expansion part after self conical surface struts slips further struts slips, what improve slips struts degree, and then casing deformation well internal diameter can be met become the requirement that the large normal grappling of well section sets, be applicable to casing deformation well.
In addition, the packer that the application provides is owing to can open subsequently through expansion part the length extending the second cone conical surface, so the external diameter of packer in present embodiment can be little than the external diameter of existing common packer, and the degree that struts of slips (also can be called spreading rate) can equal even higher than the degree that struts of slips in common packer, so, the external diameter of the packer that present embodiment provides can be less, and then smoothly by the well section that casing deformation well diameter is less, can arrive and relate to construction location.
With reference to explanation hereinafter and accompanying drawing, disclose in detail particular implementation of the present invention, specifying principle of the present invention can adopted mode.Should be appreciated that, thus embodiments of the present invention are not restricted in scope.In the spirit of claims and the scope of clause, embodiments of the present invention comprise many changes, amendment and are equal to.
The feature described for a kind of embodiment and/or illustrate can use in one or more other embodiment in same or similar mode, combined with the feature in other embodiment, or substitutes the feature in other embodiment.
Should emphasize, term " comprises/comprises " existence referring to feature, one integral piece, step or assembly when using herein, but does not get rid of the existence or additional of one or more further feature, one integral piece, step or assembly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 be the anchor mechanism of the packer that a kind of embodiment of the application provides not operating time structural representation;
Structural representation when Fig. 2 is the action of anchor mechanism shown in Fig. 1.
Detailed description of the invention
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all should belong to the scope of protection of the invention.
It should be noted that, when element is called as " being arranged at " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique embodiment.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe concrete embodiment, is not intended to be restriction the present invention.Term as used herein "and/or" comprises arbitrary and all combinations of one or more relevant Listed Items.
Referring to Fig. 1, Fig. 2, is the anchor mechanism schematic diagram of a kind of packer of the application.The packer that present embodiment provides comprises central tube 100 and the retaining mechanism be located at outside described central tube 100, executing agency, sealing mechanism and anchor mechanism, and described executing agency makes described sealing mechanism and anchor mechanism action; Described anchor mechanism comprises: be sheathed on the first cone 101 outside described central tube 100, and it connects described executing agency to be driven by described executing agency; Be sheathed on the second cone 102 outside described central tube 100, it is positioned at the below of described first cone 101; Described second cone 102 connects described central tube 100 by shear pin; Described second cone 102 is provided with expansion part 103, and described expansion part 103 can be strutted along described central tube 100 radial direction by described first cone 101; Outside wall surface after described expansion part 103 opens can extend the conical surface length of described second cone 102; Be positioned at the slips 104 below described second cone 102, it can be strutted to carry out grappling by described second cone 102.
During use, make executing agency drive anchor mechanism action by suppressing outside well, and then executing agency driving the first cone 101 to move downward, to enter when the first centrum moves down in expansion part 103 and expansion part 103 is strutted.Outside wall surface after expansion part 103 struts is by the conical surface extension of the second cone 102.Then continue to suppress, the first cone 101 move down promotion second cone 102 cut off shear pin after the second cone 102 move down, then, the second cone 102 snaps in slips 104 and is strutted by slips 104, is anchored on casing wall after slips 104 struts.
By describing above and can finding out, present embodiment forms secondary cone structure by the first cone 101, second cone 102, by the first cone 101, expansion part 103 is strutted, the conical surface length of the second cone 102 is extended again by the outside wall surface after expansion part 103 opens, and then the outside wall surface of the second cone 102 also by expansion part 103 after self conical surface struts slips 104 further struts slips 104, what improve slips 104 struts degree, and then casing deformation well internal diameter can be met become the requirement that the large normal grappling of well section sets, be applicable to casing deformation well.
In addition, the packer that present embodiment provides is owing to can open subsequently through expansion part 103 length extending second cone 102 conical surface, so the external diameter of packer in present embodiment can be little than the external diameter of existing common packer, and the degree that struts of slips 104 (also can be called spreading rate) can equal even higher than the degree that struts of slips 104 in common packer, so, the external diameter of the packer that present embodiment provides can be less, and then smoothly by the well section that casing deformation well diameter is less, can arrive and relate to construction location.
In present embodiment, executing agency's (not shown) is used for realization and sets and deblocking, sets power resources according to executing agency, and the packer in present embodiment can comprise that machinery sets, fluid power sets, preferably, executing agency adopts hydraulic coupling to provide execution power.Executing agency can set pin by cut-out and realize setting, and realizes deblocking by cutting off deblocking pin.Such as, be connected with between the first cone 101 and central tube 100 and set pin, when executing agency promote the first cone 101 cut off set pin after move.
In present embodiment, retaining mechanism (not shown) can comprise exterior central tube 100, sets pin, deblocking pin and various internal locking assembly (as conical ring, lock ring, snap close or lock refer to buckle and ratchet mechanism).Retaining mechanism is used for after packer setting, makes to sit packer and fixedly remains on the state of setting.Consider that retaining mechanism has multiple, the application is not restricted.
In present embodiment, sealing mechanism (not shown) generally includes packing element, spacer ring, thrust block pad and glue tube base.Sealing mechanism is used for after setting, and makes the two ends up and down of packer present sealing partition state.Concrete, sealing mechanism can comprise the packing element thrust block pad of centrally pipe 100 axial distribution, spaced three packing elements and two spacer rings and glue tube base, and the quantity of certain packing element and spacer ring does not limit to three and two, can ensure sealing effectiveness.
In present embodiment, described packer can also include salvaging mechanism (not shown), and wherein, salvaging mechanism can be rotary salvaging mechanism or expansion type salvaging mechanism.Salvaging mechanism is used for cutting off deblocking pin in executing agency and after completing deblocking operation, salvaging packer to well face.Wherein rotary salvaging mechanism by salvaging ear, salvage inner orbit and form, under when entering packer, the salvaging ear of packer is imported the inner orbit of fishing tool, makes packer be suspended on the inner orbit of fishing tool; During deblocking, again import packer, rotation pipeline, upper lifting pipe post, completes salvaging simultaneously.
In present embodiment, in view of executing agency, retaining mechanism, sealing mechanism, salvaging mechanism are Conventional mechanisms to those skilled in the art, and easily arrange, thus and not shown.
Please continue to refer to accompanying drawing 1, Fig. 2, Fig. 1 be anchor mechanism not operating time structural representation, structural representation when Fig. 2 is anchor mechanism action.Wherein, the first cone 101 can be located at outside central tube 100 by slip cap, and its lower end has the conical surface to snap in expansion part 103.For ensureing that the position entering the first cone 101 in process under packer is fixed, the first cone 101 can set pin and is connected with having in the middle of central tube 100, the first cone 101 only when cut off set pin ability removable.
Second cone 102 is positioned at the below of the first cone 101, and its global shape structure is similar to the first cone 101.The lower end of the second cone 102 has the conical surface, is snapped in slips 104 strutted by slips 104 by this conical surface.Be similarly the position fixing the second cone 102, strutted by slips 104 and then the situation of premature setting to prevent from entering under packer in process, the second cone 102 is connected by shear pin with between central tube 100.Second cone 102 is when being subject to the first cone 101 and promoting, and the second cone 102 can be cut off shear pin and then be moved.
The top of described second cone 102 is provided with expansion part 103, and expansion part 103 can be strutted along described central tube 100 radial direction by described first cone 101.Outside wall surface after described expansion part 103 opens can extend the conical surface length of described second cone 102.Its conical surface of dependence of second cone 102 enters in slips 104, then relies on the conical surface to be strutted by slips 104 by progressively entering slips 104.Wherein, the length of the conical surface can be the length of the taper direction extension of cone.The length of the conical surface is larger, and the external diameter at the conical surface top of the second cone 102 is larger, and then the degree strutted by slips 104 is larger.Outside wall surface after expansion part 103 opens is just suitable with the tapering of the conical surface of the second cone 102, is extended by the conical surface of the second cone 102.
Concrete, described expansion part 103 can comprise multiple open claws 1031 be circumferentially arranged along described second cone 102.The lower end of described open claws 1031 connects described second cone 102 rotationally, and the inner side of its upper end is provided with the conical surface 1032 and enters to facilitate described first cone 101.The cross section of open claws 1031 (being parallel to central tube 100 radial) can similar to the first cone 101 or the second cone 102, or open claws 1031 is same with the structure of slips 104 similar.
Open claws 1031 can be multiple, and its circumference along the second cone 102 is connected to the upper end of the second cone 102.Preferably, described multiple open claws 1031 is uniformly distributed along the upper end of described second cone 102.The pivot center of described open claws 1031 can with the axes normal of described central tube 100, and then the direction of opening of open claws 1031 is direction away from central tube 100 outer wall, and can not depart from.
Open claws 1031 is connected to the top of the second cone 102, and the bottom surface of open claws 1031 can higher than the upper surface of the second cone 102, also can lower than the upper surface of the second cone 102.Concrete, the upper end of described second cone 102 can be provided with link slot 1021, and link slot 1021 can for being formed in sunk structure or the gap structure of the second cone 102 upper surface.
Concrete, the lower end of described open claws 1031 can snap in described link slot 1021 and also be connected with described link slot 1021 by rotating pin.The two ends of rotating pin are connected on two relative sidewalls of link slot 1021.
The stretching degree of open claws 1031 can limit by being provided with position-limit mechanism, also can be limited by the diapire of link slot 1021.Such as, the bottom surface of described open claws 1031 and the diapire of described link slot 1021 have predeterminable range, and described predeterminable range is less than the distance of the lateral wall line of the bottom surface of described pivot center and described open claws 1031.
Concrete, the lateral wall line of the bottom surface of described open claws 1031 can be the shared sidewall line of the bottom surface of open claws 1031 and outside wall surface.And then when open claws 1031 opens, the bottom surface of link slot 1021 is by spacing for open claws 1031, and what reach open claws 1031 opens the upper limit.Open claws 1031 opens in limited time reaching, and the outside wall surface of open claws 1031 is just on the extended line of second cone 102 conical surface, and then is extended by the conical surface of the second cone 102.
In addition, described expansion part 103 is connected with banding part to keep non-softened state.Banding part can be elastic component (such as spring, garter spring), and expansion part 103 is by having banding part and then only just can opening under the effect of external force.Expansion part 103 also can connect central tube 100 by connector, struts effect by the first cone 101, and expansion part 103 opens after being disconnected by connector.It should be noted that, first cone 101 is not when being subject to the active force that executing agency gives, it can be undertaken spacing by the expansion part 103 do not strutted, and the active force be namely only subject in the first cone 101 is greater than the first cone 101 when strutting expansion part 103 and just can moves.
The bottom of described slips 104 is connected with slip spider 105; Described slip spider 105 is fixedly connected on described central tube 100.Described slip spider 105 can be connected with described central tube 100 by fixing pin.
Any digital value quoted herein all comprises all values with the lower value of an incremented and upper value between lower limit to higher limit, there is the interval of at least Liang Ge unit between any lower value and any much higher value.For example, if set forth the quantity of parts or the value of process variable (such as temperature, pressure, time etc.) is from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, then object also lists such as 15 to 85,22 to 68,43 to 51,30 to 32 equivalences clearly to illustrate in this manual.For the value being less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.These are only the examples wanting clearly to express, and can think that likely the combining of numerical value of enumerating between minimum and peak is all set forth clearly at this manual in a similar manner.
Except as otherwise noted, all scopes all comprise all numerals between end points and end points." approximately " or " being similar to " that use together with scope is suitable for two end points of this scope.Thus, " about 20 to 30 " are intended to cover " about 20 to about 30 ", at least comprise the end points indicated.
The all articles disclosed and reference, comprising patent application and publication, being incorporated into this for various purposes by quoting.Describe combination term " substantially by ... form " determined element, composition, parts or step should be comprised and not affect in fact other elements of basic novel feature of this combination, composition, parts or step.The combination of element, composition, parts or the step that term " comprises " or " comprising " describes here is used also to contemplate the embodiment be substantially made up of these elements, composition, parts or step.Here by use term " can ", be intended to illustrate " can " described any attribute of comprising is all optional.
Multiple element, composition, parts or step can be provided by single integrated component, composition, parts or step.Alternatively, single integrated component, composition, parts or step can be divided into multiple elements of separation, composition, parts or step.Be used for describing the open "a" or "an" of element, composition, parts or step and do not say element, composition, parts or step in order to get rid of other.
Should be appreciated that, above description is to carry out illustrating instead of in order to limit.By reading foregoing description, the many embodiments outside provided example and many application will be all apparent for a person skilled in the art.Therefore, the scope of this instruction should not determined with reference to foregoing description, but the four corner of the equivalent that should have with reference to claims and these claims is determined.For comprehensive object, all articles and with reference to comprising the open all by reference to being combined in herein of patent application and bulletin.Omit in aforementioned claim theme disclosed herein any in be not to abandon this body matter, also should not be considered as the part that this theme is not thought of as disclosed subject matter by inventor.
Claims (10)
1. a packer, comprise central tube and the retaining mechanism be located at outside described central tube, executing agency, sealing mechanism and anchor mechanism, described executing agency makes described sealing mechanism and anchor mechanism action; It is characterized in that: described anchor mechanism comprises:
Be sheathed on the first cone outside described central tube, it connects described executing agency to be driven by described executing agency;
Be sheathed on the second cone outside described central tube, it is positioned at the below of described first cone; Described second cone connects described central tube by shear pin; Described second cone is provided with expansion part, and described expansion part can be strutted along described central tube radial direction by described first cone; Outside wall surface after described expansion part opens can extend the conical surface length of described second cone;
Be positioned at the slips below described second cone, it can be strutted to carry out grappling by described second cone.
2. packer as claimed in claim 1, is characterized in that: described expansion part comprises multiple open claws be circumferentially arranged along described second cone; The lower end of described open claws connects described second cone rotationally, and the inner side of its upper end is provided with the conical surface and enters to facilitate described first cone.
3. packer as claimed in claim 2, is characterized in that: the pivot center of described open claws and the axes normal of described central tube.
4. packer as claimed in claim 2, is characterized in that: the upper end of described second cone is provided with link slot, and the lower end of described open claws snaps in described link slot and is also connected with described link slot by rotating pin.
5. packer as claimed in claim 4, is characterized in that: the bottom surface of described open claws and the diapire of described link slot have predeterminable range, and described predeterminable range is less than the distance of the lateral wall line of the bottom surface of described pivot center and described open claws.
6. packer as claimed in claim 1, is characterized in that: described expansion part is connected with banding part to keep non-softened state.
7. packer as claimed in claim 2, is characterized in that: described multiple open claws is uniformly distributed along the upper end of described second cone.
8. packer as claimed in claim 1, is characterized in that: the bottom of described slips is connected with slip spider; Described slip spider is fixedly connected on described central tube.
9. packer as claimed in claim 8, is characterized in that: described slip spider is connected with described central tube by fixing pin.
10. packer as claimed in claim 1, is characterized in that: described packer also comprises salvaging mechanism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510822477.2A CN105401911B (en) | 2015-11-24 | 2015-11-24 | Packer (CN) |
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| CN201510822477.2A CN105401911B (en) | 2015-11-24 | 2015-11-24 | Packer (CN) |
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| CN105401911A true CN105401911A (en) | 2016-03-16 |
| CN105401911B CN105401911B (en) | 2018-01-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716379A (en) * | 2018-07-25 | 2018-10-30 | 百勤能源科技（惠州）有限公司 | A kind of solvable bridge plug of big orifice |
| CN110778287A (en) * | 2019-12-13 | 2020-02-11 | 孙肖 | Use method of double-hydraulic bidirectional anchoring packer |
| CN113250649A (en) * | 2020-02-07 | 2021-08-13 | 四川维泰科创石油设备制造有限公司 | Underground plugging system and using method thereof |
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| CN2530023Y (en) * | 2002-03-22 | 2003-01-08 | 王文龙 | Self-sealing oil pipe anchoring device |
| US20140020911A1 (en) * | 2012-07-19 | 2014-01-23 | General Plastics & Composites, Lp | Downhole tool system and method related thereto |
| CN202866704U (en) * | 2012-10-28 | 2013-04-10 | 大庆泰泽机械加工有限公司 | Self-seal rotating type sand prevention oil pipe anchoring device |
| CN204140015U (en) * | 2014-10-16 | 2015-02-04 | 天津福民石油机械设备技术有限公司 | Well mouth pressure testing packer |
| CN204299525U (en) * | 2014-12-11 | 2015-04-29 | 北方斯伦贝谢油田技术（西安）有限公司 | The collapsible guider of a kind of casing patching taper |
| CN205225171U (en) * | 2015-11-24 | 2016-05-11 | 中国石油天然气股份有限公司 | Packer (CN) |
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| CN108716379A (en) * | 2018-07-25 | 2018-10-30 | 百勤能源科技（惠州）有限公司 | A kind of solvable bridge plug of big orifice |
| CN110778287A (en) * | 2019-12-13 | 2020-02-11 | 孙肖 | Use method of double-hydraulic bidirectional anchoring packer |
| CN113250649A (en) * | 2020-02-07 | 2021-08-13 | 四川维泰科创石油设备制造有限公司 | Underground plugging system and using method thereof |
| CN113250649B (en) * | 2020-02-07 | 2023-03-14 | 四川维泰科创石油设备制造有限公司 | Underground plugging system and using method thereof |
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