CN115095293A - Prevent that sleeve pipe from scurrying on hanging sealing device - Google Patents
Prevent that sleeve pipe from scurrying on hanging sealing device Download PDFInfo
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- CN115095293A CN115095293A CN202210891698.5A CN202210891698A CN115095293A CN 115095293 A CN115095293 A CN 115095293A CN 202210891698 A CN202210891698 A CN 202210891698A CN 115095293 A CN115095293 A CN 115095293A
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- sleeve
- casing pipe
- suspension
- upward movement
- face
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
Abstract
The invention provides a casing pipe upward movement preventing suspension sealing device which comprises a supporting casing pipe, a suspension head, a telescopic elastic clamping mechanism, a suspension seat and an upward movement preventing baffle ring, wherein the bottom end of the supporting casing pipe is used for being connected with a lower casing pipe, the top end of the supporting casing pipe is used for being detachably connected with a lowering device, the suspension seat and the upward movement preventing baffle ring are fixedly arranged in an upper casing pipe or at the end part of the upper casing pipe, the suspension seat and the upward movement preventing baffle ring are coaxially arranged with the upper casing pipe, the suspension head is fixedly sleeved outside the supporting casing pipe, the telescopic elastic clamping mechanism is fixedly arranged in the supporting casing pipe, the tail end of a clamping head of the telescopic elastic clamping mechanism can penetrate through the pipe wall of the supporting casing pipe and move towards the outside of the supporting casing pipe, and when the supporting casing pipe moves downwards, the suspension head can be driven to penetrate through the upward movement preventing baffle ring and sit on the suspension seat; the scheme provided by the invention can prevent the well from being scrapped due to upward movement of the casing pipe, so that the production is ensured, the service life of the well is prolonged, the cost is effectively saved, and the production value is increased.
Description
Technical Field
The invention relates to the technical field of casing suspension sealing in soluble mineral exploitation, in particular to a casing upward-channeling-preventing suspension sealing device.
Background
Soluble mineral products in the world comprise salt, trona, mirabilite, sylvite and the like, and the soluble mineral products are limited by the area of a mining area in order to increase the yield, supplement the mineral products and increase the circulating well group in the middle and later stages of circulating water-soluble mining by adopting the horizontal butt-joint well group; a large amount of well repairing work is carried out on the old well, the process is time-consuming and labor-consuming, the investment cost is increased, and the problem cannot be well solved.
The classical brine extraction circulating well group consists of a horizontal well and two vertical wells, and in the drilling process of the two brine extraction vertical wells, an ore bed consists of an upper ore group and a lower ore group or a plurality of ore groups. When two vertical wells cannot adopt two drilling machines to drill into a determined first mining layer simultaneously, a first vertical well can be constructed firstly and drilled to a lower ore group, if a lower mining layer with mining performance is found, a technical casing is arranged in the upper reliable first mining layer, and a hanger is connected to the bottom of the technical casing. And after the second vertical well is constructed, the electric logging well determines whether the lower ore group has the first mining layer with the same mining property, if so, the technical casing is directly put into the first mining layer with the mining property of the lower ore group in the second vertical well, and the well is completed after well cementation. A casing hanging technique is used in the first vertical well to hang the small first casing to the mineability first-seam of the lower panel. Thus, the purposes of saving labor hour and increasing yield are achieved through the casing suspension technology.
In addition, the area of the soluble mineral area is limited, along with the expansion of a drilling area, the yield is limited by the area of the mineral area by increasing the number of production wells, the old mineral area is utilized, brine in the old mineral area is extracted, and the potential mining mineral is extracted to ensure the yield and improve the yield.
Along with the production well is close to the service life, the upper ore layer is collapsed due to the fact that the soluble ore layer at the lower part is dissolved and mined, the situation that channels are blocked or central pipes are crystallized and blocked occurs to a plurality of production wells, and after a pump station injects a solvent into the underground, brine in a solution cavity cannot be extracted from the production wells by means of a traditional pressure feeding injection mining method. Therefore, the blocking condition of the channel needs to be frequently treated, or a large-scale hoisting device is used for lifting the central pipe, a submersible pump is placed in the sleeve, and brine is pumped out to the main pipeline supply processing plant by adopting a negative pressure pumping method. However, some production wells have severely deformed the base pipe and casing due to collapse of the upper seam and the base pipe cannot be pulled out. This has a serious impact on the yield index of the process plant. Frequent workover not only increases production cost, but also causes serious shortage of processing plant brine supply. In order to solve the problem of insufficient yield, brine is urgently needed to increase the yield, a new circulating well group is added to a mining area by drilling to increase the brine yield, but a long time is needed for the new well group from the beginning of circulation to the time when the concentration reaches the production requirement, and the produced quantity of each circulating well group is 20-30m 3 By this approach alone, it obviously takes a long time to make up the design production, which causes huge losses to the plant. Most of the supplemented well groups are located at the edge of a mining area, and the mining area is thin, large in fluctuation of the mining area, large in construction difficulty and long in construction period. Therefore, a large-displacement submersible pump (larger than 100 m) is arranged in the brine extraction well with a special well body structure constructed in an old mining area 3 And/h) extracting high-concentration brine in a solution cavity of an old mining area and extracting lower potential mineable ores in a newly-opened edge mining area to solve the current problems.
Therefore, the application of the brine mining well with the special well body structure in the old mining area in the well drilling of the old mining area and the marginal mining area is more and more important, and the market prospect is wide. In these exploitation wells, adopt traditional sleeve pipe to hang sealed, the lower part is the big chamber that dissolves, can't the well cementation after hanging, the lower part sleeve pipe is in can the free upper and lower state, in the brine pumping in-process, the lower part dissolves the dregs of intracavity insoluble substance and can pile up near the screen pipe, and dissolve the brine of intracavity and be in the active condition and contain gas, when the screen pipe of lower part has partial jam or brine to gush, the phenomenon can appear scurrying to the sleeve pipe, the back is scurryed on the sleeve pipe, the screen pipe position changes, sealed also inefficacy thereupon, cause brine concentration to reduce, also can not effectual extraction brine, thereby cause the well to scrap.
Disclosure of Invention
The invention aims to provide a casing pipe upward movement prevention suspension sealing device, which is used for solving the problems in the prior art, preventing the casing pipe from upward movement to cause well abandonment, ensuring production, prolonging the service life of a well, effectively saving cost and increasing the production value.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a casing up-fleeing prevention suspension sealing device which comprises a support casing, a suspension head, a telescopic elastic clamping mechanism, a suspension seat and an up-fleeing prevention baffle ring, the bottom end of the supporting sleeve is used for being connected with a lower sleeve, the top end of the supporting sleeve is used for being detachably connected with a lowering device, the suspension seat and the anti-upward-movement baffle ring are both used for being fixedly arranged in the upper sleeve or at the end part of the upper sleeve, the suspension seat and the anti-upward-movement baffle ring are both arranged coaxially with the upper sleeve, the hanging head is fixedly sleeved outside the supporting sleeve, the telescopic elastic clamping mechanism is fixedly arranged in the supporting sleeve, and the tail end of the clamping head of the telescopic elastic clamping mechanism can pass through the pipe wall of the supporting sleeve and move towards the outside of the supporting sleeve, when the supporting sleeve moves downwards, the suspension head can be driven to penetrate through the upward movement preventing baffle ring and sit on the suspension seat;
when the suspension head is seated on the suspension seat, the clamping head moves downwards to exceed the upward movement-preventing retaining ring, and the tail end of the clamping head can move outwards to exceed the cylindrical surface where the inner wall of the upward movement-preventing retaining ring is located.
Preferably, the support sleeves on the two sides of the telescopic elastic clamping mechanism are externally coated with expandable rubber layers.
Preferably, the chuck is an elastic telescopic column, the chuck extends out of the support sleeve under the action of the elasticity of the chuck in a normal state, and when the support sleeve is lowered to pass through the upward movement preventing baffle ring, the inner wall of the upward movement preventing baffle ring gives a pressing force to the chuck towards the support sleeve and enables the tail end of the chuck to move towards the inner side.
Preferably, scalable bullet card mechanism includes solid fixed ring and a plurality of dop, gu fixed ring nestification is fixed in support the cover intraductally, a plurality of dops along gu fixed ring's circumference is laid gu fixed ring is last, the dop orientation one side of fixed ring axis is the inboard, and the opposite side is the outside, the dop is including card post and resilience structure, resilience structure set up in the inboard of card post and with card post fixed connection works as the card post can overcome when receiving the extrusion force to the inboard elasticity of resilience structure moves to the inboard, when the extrusion force to the inboard is eliminated, the card post is in the outside is removed under the resilience force of resilience structure of resilience.
Preferably, the anti-channeling baffle ring inner wall includes the constant face, the constant face is cylindrical face, the constant face deviate from the one end linkage that hangs the seat has the gradual change face, the gradual change face certainly the one end of constant face is to keeping away from the direction of constant face, being close to gradually go up the extension of sleeve pipe inner wall, the constant face is kept away from the one end linkage of gradual change face has the perpendicular to the fender face of constant face, the fender face certainly the constant face extends to go up the sleeve pipe inner wall, the gradual change face is the round platform profile, the fender face is the annular face.
Preferably, the rebounding structure comprises a steel ball, a supporting rod and a rebounding sleeve with a slot, one end of the rebounding sleeve is fixedly connected with the clamping column, the other end of the rebound sleeve is provided with a plurality of slots extending from the end part to the clamping column along the length direction, and forming a plurality of self-restoring elastic strips, a plurality of the slots are distributed along the circumferential direction of the rebound sleeve, the rebound sleeve is made of elastic material, one end of the support rod is fixedly provided with the steel ball, the other end is fixed, when the clamping columns move inwards, the steel balls can be pushed into the rebound sleeves from the ends, provided with the slots, of the rebound sleeves, each self-recovery elastic strip expands outwards under the extrusion of the steel balls, when the external force disappears, the resilience sleeve drives the chuck to move outwards under the reaction force of the steel ball on the self-recovery elastic strip; and a rubber ball is also arranged at the bottom of the rebound sleeve.
Preferably, the tail end of the clamping head penetrates out of the supporting sleeve through a through hole formed in the supporting sleeve, and at least part of the steel ball is embedded in the rebound sleeve all the time, so that the end part of the rebound sleeve is expanded to be larger than the size of the through hole.
Preferably, the gap between the suspension seat and the suspension head is sealed by two sealing rings.
Preferably, the top end of the support sleeve is provided with a reverse thread joint, and the support sleeve is detachably connected with the lowering device through the reverse thread joint.
Preferably, the suspension seat and the anti-channeling baffle ring are both used for being fixedly arranged on the inner wall of the upper casing pipe at the bottommost end; the bottom end of the supporting sleeve is used for being connected with the topmost lower sleeve.
Compared with the prior art, the invention achieves the following technical effects:
when the suspension head of the casing pipe upward movement prevention suspension sealing device provided by the invention is seated on the suspension seat, the chuck moves downwards to exceed the upward movement prevention retaining ring, the tail end of the chuck can move outwards to exceed the cylindrical surface where the inner wall of the upward movement prevention retaining ring is located, and the upward movement prevention retaining ring and the chuck are matched and matched to prevent the downward casing pipe from moving upwards so as to prevent the downward casing pipe from moving upwards to cause well abandonment, thereby ensuring production, prolonging the service life of a well, effectively saving cost and increasing the production value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a casing pipe fleeing prevention suspension sealing device provided by the invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic structural view of an upper casing to which a suspension holder and an anti-channeling stopper ring are mounted;
FIG. 4 is a sectional view taken along line B-B of FIG. 3;
FIG. 5 is a schematic structural view of a support sleeve, a suspension head and a retractable card ejection mechanism;
FIG. 6 is a sectional view taken along line C-C of FIG. 5;
FIG. 7 is a schematic view of the structure of the catch and the resilient sleeve;
FIG. 8 is a schematic structural view of the support sleeve, suspension head and retractable snapping mechanism;
FIG. 9 is a half-sectional view of FIG. 8;
FIG. 10 is an enlarged view of the structure at I in FIG. 9;
in the figure: 1. mounting a sleeve; 2. an anti-channeling baffle ring; 3. a suspension seat; 4. a support sleeve; 5. an expandable rubber layer; 6. a retractable card ejection mechanism; 7. a suspension head; 8. a seal ring; 9. an upper baffle ring of the expandable rubber layer; 10. a reverse-thread joint; 61. clamping a head; 62. a fixing ring; 611. clamping the column; 612. a rebound sleeve; 613. a rubber ball; 614. a steel ball; 615. a support rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a casing pipe upward movement preventing suspension sealing device, which is used for solving the problems in the prior art, preventing the casing pipe from upward movement to cause well abandonment, ensuring production, prolonging the service life of a well, effectively saving cost and increasing the production value.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a casing up-shift prevention suspension sealing device, which comprises a support casing 4, a suspension head 7, a telescopic elastic clamping mechanism 6, a suspension seat 3 and an up-shift prevention baffle ring 2, wherein the bottom end of the support casing 4 is connected with a lower casing, the top end of the support casing 4 is detachably connected with a lower device, the lower device is a drill string, the suspension seat 3 and the up-shift prevention baffle ring 2 are both fixedly arranged in the upper casing 1 or at the end part, the suspension seat 3 and the up-shift prevention baffle ring 2 are both coaxially arranged with the upper casing 1, the suspension head 7 is fixedly sleeved outside the support casing 4, the telescopic elastic clamping mechanism 6 is fixedly arranged in the supporting sleeve 4, the tail end of a clamping head 61 of the telescopic elastic clamping mechanism 6 can penetrate through the pipe wall of the supporting sleeve 4 and move towards the outside of the supporting sleeve 4, and the supporting sleeve 4 can drive the suspension head 7 to penetrate through the anti-up-shift baffle ring 2 and sit on the suspension seat 3 when moving downwards; the annular gap between the support sleeve 4 and the upper sleeve 1 is sealed by a sealing structure
When the suspension head 7 is seated on the suspension seat 3, the chuck 61 moves downward to exceed the anti-upward movement stop ring 2, and the end of the chuck 61 can move outward to exceed the cylindrical surface where the inner wall of the anti-upward movement stop ring 2 is located, in the preferred embodiment, when the suspension head 7 is seated on the suspension seat 3, the chuck 61 just moves downward to exceed the anti-upward movement stop ring 2, and the embodiment can greatly reduce the upward movement amplitude of the lower casing.
When the suspension head 7 of the casing pipe up-shift prevention suspension sealing device provided by the invention is seated on the suspension seat 3, the chuck 61 moves downwards to exceed the up-shift prevention baffle ring 2, the tail end of the chuck 61 can move outwards to exceed the cylindrical surface where the inner wall of the up-shift prevention baffle ring 2 is located, the up-shift prevention baffle ring 2 and the chuck 61 are matched and matched to prevent a lower casing pipe from moving upwards, and further prevent the lower casing pipe from moving upwards to cause well abandonment, so that production is ensured, the service life of a well is prolonged, cost is effectively saved, and the production value is increased.
In another preferred embodiment, the support sleeves 4 on both sides of the telescopic elastic clamping mechanism 6 are coated with expandable rubber layers 5, in another preferred embodiment, a gap between the suspension seat 3 and the suspension head 7 is sealed by two sealing rings 8, the two expandable rubber layers 5 realize 5 times of expansion after 24 hours of water bubbles, and realize sealing together with the lower sealing ring 8, so as to support the annular gap between the sleeve 4 and the upper sleeve 1.
In another preferred embodiment, the chuck 61 is an elastic telescopic column, and in a normal state, the chuck 61 extends out of the support sleeve 4 under the action of its own elastic force, when the support sleeve 4 is lowered to the position where the chuck 61 passes through the upward movement preventing ring 2, the inner wall of the upward movement preventing ring 2 gives a pressing force to the chuck 61 toward the support sleeve 4 and causes the end of the chuck 61 to move toward the inside, when the support sleeve 4 is lowered to the position where the chuck 61 just exceeds the upward movement preventing ring 2, the chuck 61 returns to the initial position under the action of its own elastic force and is matched with the upward movement preventing ring 2, that is, when the lower sleeve moves upward and drives the support sleeve 4 to move, the upward movement preventing ring 2 can prevent the chuck 61 from moving upward and further prevent the support sleeve 4 and the lower sleeve below from moving upward.
In addition, in other embodiments, the chuck 61 may be electrically or hydraulically driven to move by a mechanical driving mechanism, and the driving is controlled by a controller, i.e., the chuck 61 is normally retracted into the support sleeve 4, and when the chuck 61 moves downward to exceed the anti-moving ring 2, the driving device, i.e., the driving chuck 61 extends and cooperates with the anti-moving ring 2.
In another preferred embodiment, the retractable card-ejecting mechanism 6 includes a fixing ring 62 and a plurality of chucks 61, the fixing ring 62 is fixed in the support sleeve 4 in a nesting manner, the plurality of chucks 61 are arranged on the fixing ring 62 along the circumferential direction of the fixing ring 62, preferably, 4 chucks 61 are arranged, the 4 chucks 61 are uniformly arranged along a circumference, that is, an included angle of 90 degrees exists between each other, each chuck 61 extends along the radial direction of the fixing ring 62, one side of the chuck 61 facing the axis of the fixing ring 62 is an inner side, and the other side is an outer side, the chuck 61 includes a chuck post 611 and a resilient structure, the resilient structure is arranged on the inner side of the chuck post 611 and is fixedly connected with the chuck post 611, when the chuck post 611 is subjected to an inward pressing force, the resilient structure can overcome the elastic force of the resilient structure and move towards the inner side, and when the inward pressing force is eliminated, the chuck post 611 moves towards the outer side under the resilient force of the resilient structure.
In another preferred embodiment, the inner wall of the anti-channeling stop ring 2 comprises a constant surface, the constant surface is a cylindrical surface, one end of the constant surface, which is away from the suspension seat 3, is connected with a gradual change surface, the gradual change surface extends from one end of the constant surface to the direction away from the constant surface and gradually approaches the inner wall of the upper sleeve 1, one end of the constant surface, which is away from the gradual change surface, is connected with a stop surface perpendicular to the constant surface, the stop surface extends from the constant surface to the inner wall of the upper sleeve 1, the gradual change surface is a circular truncated cone surface, two ends of the gradual change surface are respectively connected with the inner wall of the upper sleeve 1 and the constant surface, the stop surface is an annular surface, the gradual change surface is arranged to facilitate compression of the chuck 61, and the gradual change surface has a guiding function.
In another preferred embodiment, the rebounding structure comprises a steel ball 614, a supporting rod 615 and a rebounding sleeve 612 with slits, one end of the rebounding sleeve 612 is fixedly connected with the clamping column 611, the other end of the rebounding sleeve 612 is provided with a plurality of slits extending from the end part to the clamping column 611 along the length direction, six slits are uniformly distributed and form a plurality of self-recovery elastic strips, the plurality of slits are distributed along the circumferential direction of the rebounding sleeve 612, the rebounding sleeve 612 is made of an elastic material, one end of the supporting rod 615 is fixedly provided with the steel ball 614, the other end of the supporting rod 615 is fixed, when the clamping column 611 moves inwards, the steel ball 614 can be pushed into the rebounding sleeve 612 from the end, provided with the slits, of the rebounding sleeve 612 and the respective recovery elastic strips expand outwards under the extrusion of the steel ball 614, and when the external force disappears, the rebounding sleeve 612 drives the chuck 61 to move outwards under the reaction force of the self-recovery elastic strips under the steel ball 614; the bottom of the rebound sleeve 612 is further provided with a rubber ball 613, the rebound sleeve 612 and the clamping column 611 are of an integrated structure, the diameter of an inner hole of the rebound sleeve 612 is one millimeter smaller than that of the steel ball 614, when the steel ball 614 moves towards the clamping column 611 in the rebound sleeve 612, the self-recovery elastic strip generates elastic deformation, when the steel ball 614 contacts the rubber ball 613, the rubber ball 613 generates elastic deformation to prop against the steel ball 614, at the moment, the chuck 61 moves right downwards into a constant surface and keeps the state downwards, and after the chuck 61 passes through the anti-channeling baffle ring 2, as a limit wall surface outside the chuck 61 disappears, the self-recovery elastic strip and the rubber ball 613 recover the original forms and push the steel ball 614 to move towards the outside of the rebound sleeve 612; in other embodiments, the resilient structure may be a spring, a rubber post, or the like that is compressible and resilient.
In another preferred embodiment, the end of the collet 61 passes out of the support sleeve 4 through a through hole opened in the support sleeve 4, and at least a portion of the steel ball 614 is embedded in the resilient sleeve 612, so that the end of the resilient sleeve 612 is expanded to a size larger than the through hole to prevent the collet 61 from popping out of the through hole and to facilitate movement of the steel ball 614 into the resilient sleeve 612.
In another preferred embodiment the support casing 4 is provided with a wire-reversing sub 10 at its top end, by means of which the support casing 4 is detachably connected to the lowering device, in this embodiment the support casing 4 is lowered with a drill string, the end of which is detachably connected to the wire-reversing sub 10.
In another preferred embodiment, the suspension seat 3 and the anti-channeling baffle ring 2 are both used to be fixedly arranged on the inner wall of the upper casing 1 at the lowermost end; the bottom end of the support sleeve 4 is intended to be connected to the topmost lower sleeve.
When the casing pipe up-shift preventing hanging sealing device provided by the invention is used, the hanging seat 3 and the up-shift preventing baffle ring 2 are firstly installed in the first upper casing pipe 1 needing to be lowered or at two end parts of the first upper casing pipe 1, an annular-column-shaped limiting space is formed between the hanging seat 3 and the up-shift preventing baffle ring 2, all the upper casing pipes 1 are sequentially lowered and then subjected to cement well cementation, after waiting for the cement well cementation, secondary drilling is carried out to reach the designed depth and enter a brine solution cavity, the screen pipe, the lower casing pipe and the support casing pipe 4 fixedly connected with the lower casing pipe are conveyed into a well, specifically, the lowering depth of the screen pipe is determined according to a well measurement result, then the use lengths of the lower casing pipe and a conveying drill rod column are calculated, the support casing pipe 4 is installed at the top of the last lower casing pipe needing to be lowered, and the support casing pipe column is conveyed into the well. At the top of the support casing 4 is a reverse connection 10 for retrieving the drill string after running has been completed.
Specifically, in the process of lowering the screen pipe, the lower casing and the supporting casing 4, the size of the retractable snapping mechanism 6 in a normal state is slightly smaller than the inner diameter of the upper casing 1, so that the retractable snapping mechanism 6 is always in an unstressed state before reaching the anti-upward-movement blocking ring 2, when the retractable snapping mechanism is lowered until the chuck 61 is contacted with a gradually-changing surface, the inner diameter of the gradually-changing surface is gradually reduced, the chuck 61 is squeezed to move towards the supporting casing 4, when the chuck 61 is lowered to be contacted with a constant surface, the chuck 61 stops moving, the holding state is moved downwards to exceed the constant surface, the squeezing force borne by the chuck 61 disappears, the chuck recovers to the initial state and extends to the position right below the blocking surface, and the suspension head 7 is just seated on the suspension seat 3 at the moment, the suspension seat 3 plays a suspension role for the supporting casing 4 and the lower casing, and rotates the drill string clockwise, the drill string is retrieved by unscrewing from the reverse connection 10.
The upper sleeve 1 in the invention is an outer sleeve or an upper-layer sleeve, and the lower sleeve is an inner sleeve or a lower-layer sleeve.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a prevent that sleeve pipe from scurrying and hanging sealing device which characterized in that: the hanging device comprises a supporting sleeve, a hanging head, a telescopic elastic clamping mechanism, a hanging seat and an upward movement prevention baffle ring, wherein the bottom end of the supporting sleeve is used for being connected with a lower sleeve, the top end of the supporting sleeve is used for being detachably connected with a lowering device, the hanging seat and the upward movement prevention baffle ring are both used for being fixedly arranged in an upper sleeve or at the end part of the upper sleeve, the hanging seat and the upward movement prevention baffle ring are both coaxially arranged with the upper sleeve, the hanging head is fixedly sleeved outside the supporting sleeve, the telescopic elastic clamping mechanism is fixedly arranged in the supporting sleeve, the tail end of a clamping head of the telescopic elastic clamping mechanism can penetrate through the pipe wall of the supporting sleeve and move towards the outside of the supporting sleeve, and the hanging head can be driven to penetrate through the upward movement prevention baffle ring and be seated on the hanging seat when the supporting sleeve moves downwards;
when the suspension head is seated on the suspension seat, the clamping head moves downwards to exceed the upward movement-preventing retaining ring, and the tail end of the clamping head can move outwards to exceed the cylindrical surface where the inner wall of the upward movement-preventing retaining ring is located.
2. The casing pipe up-run prevention suspension seal device according to claim 1, characterized in that: the support sleeves on the two sides of the telescopic elastic clamping mechanism are externally coated with expandable rubber layers.
3. The casing pipe up-run prevention suspension seal device according to claim 1, characterized in that: the clamping head is an elastic telescopic column, the clamping head extends out of the supporting sleeve under the action of the elasticity of the clamping head under the normal state, and when the supporting sleeve is lowered to the position where the clamping head passes through the upward movement preventing baffle ring, the inner wall of the upward movement preventing baffle ring gives extrusion force to the clamping head towards the inside of the supporting sleeve and enables the tail end of the clamping head to move towards the inner side.
4. The casing pipe up-run prevention suspension seal device according to claim 3, wherein: scalable bullet card mechanism is including solid fixed ring and a plurality of dop, gu fixed ring nestification is fixed in support the cover intraductally, a plurality of dops along gu fixed ring's circumference is laid gu fixed ring is last, the dop orientation one side of fixed ring axis is the inboard, and the opposite side is the outside, the dop is including card post and resilience structure, resilience structure set up in the inboard of card post and with card post fixed connection works as can overcome when the card post receives the extrusion force to the inboard resilience structure's elasticity is removed to the inboard, when the extrusion force to the inboard is eliminated, the card post is in the resilience force effect of resilience structure is removed to the outside.
5. The casing pipe up-run prevention suspension seal device according to claim 4, wherein: the anti-channeling keeps off ring inner wall and includes the constant face, the constant face is cylindrical face, the constant face deviate from the one end linkage that hangs the seat has the gradual change face, the gradual change face certainly the one end of constant face is to keeping away from the direction of constant face, being close to gradually go up the extension of sleeve pipe inner wall, the constant face is kept away from the one end linkage of gradual change face has the perpendicular to the fender face of constant face, the fender face certainly the constant face extends to go up the sleeve pipe inner wall, the gradual change face is the round platform profile, the fender face is the annular face.
6. The casing pipe up-run prevention suspension seal device according to claim 3, wherein: the rebounding structure comprises a steel ball, a supporting rod and a rebounding sleeve with a slot, one end of the rebounding sleeve is fixedly connected with the clamping column, the other end of the rebounding sleeve is provided with a plurality of slots extending from the end part to the clamping column along the length direction, a plurality of self-recovery elastic strips are formed, the slots are distributed along the circumferential direction of the rebounding sleeve, the rebounding sleeve is made of elastic materials, one end of the supporting rod is fixedly provided with the steel ball, the other end of the supporting rod is fixed, when the clamping column moves inwards, the steel ball can be jacked into the rebounding sleeve from the end, provided with the slot, of the rebounding sleeve, each self-recovery elastic strip expands outwards under the extrusion of the steel ball, and when the external force disappears, the rebounding sleeve drives the chuck to move outwards under the reactive force of the steel ball on the self-recovery elastic strips; and a rubber ball is also arranged at the bottom of the rebound sleeve.
7. The casing pipe up-run prevention suspension seal device according to claim 6, wherein: the tail end of the clamping head penetrates out of the supporting sleeve through a through hole formed in the supporting sleeve, and at least part of the steel ball is embedded in the rebound sleeve all the time, so that the end portion of the rebound sleeve is expanded to be larger than the size of the through hole.
8. The casing pipe up-run prevention suspension seal device according to claim 1, characterized in that: the gap between the suspension seat and the suspension head is sealed by two sealing rings.
9. The casing pipe up-run prevention suspension seal device according to claim 1, characterized in that: the top end of the supporting sleeve is provided with a reverse thread joint, and the supporting sleeve is detachably connected with the lowering device through the reverse thread joint.
10. The casing pipe up-run prevention suspension seal device according to claim 1, characterized in that: the suspension seat and the upward movement preventing baffle ring are both used for being fixedly arranged on the inner wall of the upper casing pipe at the bottommost end; the bottom end of the supporting sleeve is used for being connected with the topmost lower sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210891698.5A CN115095293B (en) | 2022-07-27 | 2022-07-27 | Prevent sleeve pipe and scurry suspension seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210891698.5A CN115095293B (en) | 2022-07-27 | 2022-07-27 | Prevent sleeve pipe and scurry suspension seal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115095293A true CN115095293A (en) | 2022-09-23 |
| CN115095293B CN115095293B (en) | 2023-10-13 |
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Family Applications (1)
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| CN202210891698.5A Active CN115095293B (en) | 2022-07-27 | 2022-07-27 | Prevent sleeve pipe and scurry suspension seal device |
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| CN2349346Y (en) * | 1998-10-08 | 1999-11-17 | 吉林省油田管理局试油处 | Tool for preventing up push |
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| CN217055075U (en) * | 2021-12-30 | 2022-07-26 | 大庆楠北科技有限公司 | Upward movement preventing device for perforating pipe column |
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| CN115095293B (en) | 2023-10-13 |
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