CN113513287B - Negative pressure setting packer - Google Patents
Negative pressure setting packer Download PDFInfo
- Publication number
- CN113513287B CN113513287B CN202111071305.8A CN202111071305A CN113513287B CN 113513287 B CN113513287 B CN 113513287B CN 202111071305 A CN202111071305 A CN 202111071305A CN 113513287 B CN113513287 B CN 113513287B
- Authority
- CN
- China
- Prior art keywords
- connecting block
- slip
- negative pressure
- pressure setting
- slips
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000004873 anchoring Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims description 36
- 239000003129 oil well Substances 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000001154 acute effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 210000002421 cell wall Anatomy 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
-
- 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
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
Abstract
The invention belongs to the technical field of oil exploitation equipment, and particularly relates to a negative pressure setting packer. The negative pressure setting packer comprises a sealing mechanism, wherein an anchoring mechanism is arranged at the bottom of the sealing mechanism, and a centering body mechanism is arranged at the bottom of the anchoring mechanism; the anchoring mechanism comprises a slip frame and a plurality of slips, and the slips are arranged in the slip frame through hoop rings; an annular ring is arranged on the outer side of the slip frame at the top of the slip, and a pushing device is arranged on the annular ring; according to the invention, the slips are designed to be separable, the elastic plate is opened to push the top ends of the two opened plates to be separated from each other, the elastic plate can be hung on the right-angle rod, the top end of the opened plate does not need to be pressed on the inner wall of the sleeve, so that the deformation of the sleeve is reduced, the abrasion of the slips can be reduced, and foreign matters at the outwardly-turned seat can be cleaned through the matching action of the pushing device and the limiting device, so that the friction between the slips and the sleeve is prevented, and the recovery efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of oil exploitation equipment, and particularly relates to a negative pressure setting packer.
Background
In the horizontal well, a packing device at the upper part of the hollow oil well pump needs to be fixed in a shaft, a hollow plunger of the oil well pump is separated from the packing device and moves up and down along with a pipe column, and when the production of an oil well is simulated, a testing tool carries out testing operation through the hollow plunger of the hollow oil well pump. Common setting and releasing modes of the existing packing anchoring device are mainly divided into mechanical and hydraulic modes; the mechanical mode is to realize setting and separation by rotating, lifting and lowering the pipe column, the technology is easy to implement in a large shaft and difficult to implement in a well with 139.7 mm diameter casing; the hydraulic mode is realized by the pressure build-up in the pipe column, so that the setting mechanism realizes separation while setting, and the setting tool is put in mainly through a small oil pipe or a coiled tubing.
When the negative pressure setting packer (such as a Y211 type packer) with slips is used, the top end of the slips deflects outwards to open, the slips with teeth are abutted against the inner wall of a preset sleeve in an oil well, the anchoring effect is realized, the teeth are pressed into the side wall of the sleeve by large abutting force, meanwhile, the abutting force of the slips can not only deform the sleeve, but also the top end of the slip is abraded by friction in the abutting process, and after the top end of the slips deflects outwards to open, the wellhead needs to be sealed by subsequent complicated operation, foreign matters are prevented from falling to the included angle between the opened slips and a slip frame through the wellhead, if the slips are not sealed, the foreign matters can block the return of the slips when the slips are retracted, and the recovery of the packer is influenced.
Therefore, it is necessary to develop a negative pressure setting packer to solve the above problems.
Disclosure of Invention
In view of the above problems, the present invention provides a negative pressure setting packer to solve the problems set forth in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a negative pressure setting packer comprises a sealing mechanism, wherein an anchoring mechanism is arranged at the bottom of the sealing mechanism, and a centering body mechanism is arranged at the bottom of the anchoring mechanism; the anchoring mechanism comprises a slip frame and a plurality of slips, and the slips are arranged in the slip frame through hoop rings; an annular ring is arranged on the outer side of a slip frame at the top of the slip, a pushing device is arranged on the annular ring, the slip comprises an outward turning seat and two opening plates hinged to the top of the outward turning seat, inclined planes are arranged at the bottoms of the two opening plates and the top of the outward turning seat, an included angle formed by the inclined plane on the opening plate and the upper part of a mirror image surface between the two opening plates is an acute angle, an included angle formed by the inclined plane on the outward turning seat and the lower part of the mirror image surface between the two opening plates is an acute angle, limiting grooves are formed in the opposite sides of the two opening plates, the same elastic plate is arranged in the two limiting grooves, the opening plates can be retracted into the side walls of the slip frame, and vertical moving blocks are fixedly connected to the bottom ends of the elastic plates; the slips frame outside is provided with the right angle pole of a plurality of circumference equipartitions, right angle pole and slips frame one-to-one, and right angle pole fixed connection is on the inside predetermined inside casing pipe inner wall of oil well.
In one of them embodiment, thrust unit includes the rotating ring, a plurality of connecting blocks of rotating ring bottom fixedly connected with, connecting block one side fixedly connected with violently pushes away the spring, the one end fixed connection that the connecting block was kept away from to violently pushing away the spring is inside the annular ring, a plurality of vertical clearance poles of rotating ring bottom fixedly connected with, the connecting block bottom makes violently pushing away the spring and is in compression state through the stop device who pegs graft, the annular ring is inside to be seted up the arc wall the same with connecting block quantity, violently push away spring and connecting block and all be located inside the arc wall, the arc wall bottom link up and has seted up through the groove.
In one embodiment, the bottom end of the vertical cleaning rod is positioned at the top of the horizontal section of the everting seat, and the connecting blocks and the vertical cleaning rod are in one-to-one correspondence with the slips.
In one embodiment, the limiting device comprises a counterweight inserting column, the top end of the counterweight inserting column is movably inserted into a hole in the bottom of the connecting block, a supporting spring is fixedly connected to the bottom end of the counterweight inserting column, the supporting spring is located inside an annular ring at the bottom of the arc-shaped groove, the connecting block is in contact with the groove wall of the bottom of the arc-shaped groove, and a steel ball is embedded into the side face of the counterweight inserting column.
In one embodiment, the bottom end of the vertical cleaning rod is sleeved with a plurality of conical blocks, the bottom of each conical block is fixedly connected with a connecting spring, the bottom end of each connecting spring is fixedly connected with a support ring, and the support rings are fixedly sleeved on the outer side of the vertical cleaning rod.
In one embodiment, the diameter of the top end of the cone block is smaller than the diameter of the bottom end, and the diameter of the support ring is smaller than the diameter of the bottom end of the cone block.
In one embodiment, the side of the support ring is fixedly hinged with a plurality of needles, and the surfaces of the needles are provided with sawteeth.
In one embodiment, the top end of the counterweight insertion column is a conical top, a counterweight positioning rod is inserted in a maximum diameter position of the conical top in a non-slip mode, the top end of the counterweight positioning rod is closer to the center line of the counterweight insertion column than the bottom end of the counterweight positioning rod, and the counterweight positioning rod is slidably inserted in the conical top.
In one embodiment, the vertical cleaning rod is provided with a guide block, the guide block is slidably arranged on the side wall of the through groove, so that the vertical cleaning rod is kept vertical, the bottom surface of the arc-shaped groove of the annular ring is provided with a groove, the supporting spring is arranged in the groove, the groove is also used for accommodating the downwards moved counterweight insertion column, and the bottom end of the counterweight positioning rod is provided with a friction bottom end.
In one of them embodiment, the protruding fender that is equipped with in one side that vertical clearance pole was kept away from to the connecting block establishes the board, be used for keeping off and establish horizontal push spring, the bottom surface that keeps off and establish the board is the inclined plane, the high position on inclined plane reduces along the one side that deviates from vertical clearance pole gradually, the pointed end on conical top is provided with the slip pearl, the slip pearl on conical top after breaking away from the connecting block bottom can keep off the bottom surface of establishing the board relatively and slide, the inclined plane can make the fender establish the board and move connecting block reverse movement with supporting spring mutually supported, the guide counter weight inserts in the post reinsertation connecting block bottom hole, in order to resume the locking to the connecting block.
The invention has the technical effects and advantages that:
1. according to the slip, the slip is designed to be separable, the elastic plate is opened to push the top ends of the two opening plates to be separated from each other, the elastic plate can be hung on the right-angle rod, the top end of the opening plate does not need to be pressed on the inner wall of the sleeve, so that the deformation of the sleeve is reduced, the abrasion of the slip can be reduced, and foreign matters at the outward turning seat can be cleaned through the matching effect of the pushing device and the limiting device, so that the friction between the slip and the sleeve is prevented, and the recovery efficiency is improved;
2. according to the invention, through the action of the conical block outside the vertical cleaning rod, when the vertical cleaning rod pushes foreign matters, the foreign matters can press the conical block downwards to compress the connecting spring, so that the conical block has a rubbing action on the surface of the foreign matters, the probability of falling of the fragments on the surface of the foreign matters is improved, meanwhile, the reaction force of the conical block has an upward pushing action on the foreign matters, and the foreign matters can be overturned upwards when the vertical cleaning rod pushes the foreign matters horizontally, so that the friction force between the foreign matters and the outwards-turning seat is reduced, and the probability of falling of the foreign matters under pushing action is increased;
3. when the needle is pricked on a foreign body, the hole shape can be poked on the surface of the foreign body, due to the existence of the saw teeth, the part between two adjacent hole shapes on the surface of the foreign body can be rubbed by the saw teeth to fall off, the surface of the foreign body is abraded and dropped off when the saw teeth rub, meanwhile, as the holes are poked on the surface of the foreign body by the needle, when the saw teeth rub on the surface of the foreign body, the volume for dropping chips is larger, the probability of dropping by rubbing is also increased, so that the weight of the foreign body can be reduced, and the probability of pushing the foreign body to drop off is improved;
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention;
FIG. 3 is a perspective view of the slip of the present invention;
FIG. 4 is a schematic view of the slips of the present invention as they are deployed;
FIG. 5 is a cross-sectional view of the expansion plate of the present invention;
FIG. 6 is a schematic view of the annular ring of the present invention cut along the bottom surface of the rotating ring (a half of the rotating ring is cut longitudinally);
FIG. 7 is a perspective view of an annular ring of the present invention;
FIG. 8 is a schematic view of the structure of the position limiting device of the present invention;
fig. 9 is a top view of the needle of the present invention.
In the figure: the device comprises a sealing mechanism 1, an anchoring mechanism 2, a slip frame 21, slips 22, an outward turning seat 221, an opening plate 222, a centralizing body mechanism 3, an annular ring 4, a pushing device 5, a rotating ring 51, a connecting block 52, a transverse pushing spring 53, a vertical cleaning rod 54, a limiting device 6, a counterweight insertion column 61, a supporting spring 62, a steel ball 63, a limiting groove 7, an elastic plate 8, a vertical moving block 9, a right-angle rod 10, a taper block 11, a connecting spring 12, a supporting ring 13, a needle 14, a sawtooth 15, a counterweight positioning rod, an arc-shaped groove 17 and a through groove 18.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention;
in the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The invention provides a negative pressure setting packer as shown in figures 1-9, which comprises a sealing mechanism 1, wherein an anchoring mechanism 2 is arranged at the bottom of the sealing mechanism 1, a centralizer mechanism 3 is arranged at the bottom of the anchoring mechanism 2, the main structures of the sealing mechanism 1 and the centralizer mechanism 3 are the prior art, and the detailed description of the internal structure is omitted in the application; the anchoring mechanism 2 comprises a slip frame 21 and a plurality of slips 22, wherein the slips 22 are installed inside the slip frame 21 through hoops; an annular ring 4 is arranged on the outer side of the slip frame 21 at the top of the slip 22, a pushing device 5 is arranged on the annular ring 4, the slip 22 comprises an outward turning seat 221 and two opening plates 222 hinged to the top of the outward turning seat, inclined planes are arranged at the bottoms of the two opening plates 222 and the top of the outward turning seat 221, an included angle formed by the inclined plane on the opening plate 222 and the upper part of a mirror image surface between the two opening plates 222 is an acute angle, an included angle formed by the inclined plane on the outward turning seat 221 and the lower part of the mirror image surface between the two opening plates 222 is an acute angle, limiting grooves 7 are formed in the opposite sides of the two opening plates 222, the same elastic plate 8 is arranged in the two limiting grooves 7, the opening plate 222 can be retracted into the side wall of the slip frame 21, and a vertical moving block 9 is fixedly connected to the bottom end of the elastic plate 8; the slips frame 21 outside is provided with the right angle pole 10 of a plurality of circumference equipartitions, right angle pole 10 and slips frame 21 one-to-one, and right angle pole 10 fixed connection is on the inside predetermined inside casing pipe wall of oil well.
When the packer is used, a right-angle rod 10 can be arranged on the inner wall of a casing, the casing is placed in an oil well, when the packer needs to be lowered, the sealing mechanism 1 is lowered, after the anchoring mechanism 2 is lowered to a designed depth, the centralizing body mechanism 3 is in contact with the inner wall of the casing to provide friction force, then the sealing mechanism 1 is operated to move downwards continuously, the anchoring mechanism 2 is opened, the anchoring mechanism 2 can play a large friction force, and therefore a rubber sleeve on the sealing mechanism 1 can be expanded under pressure to play a sealing role by applying larger force, the working processes are the prior art, and the packer which is known to a person skilled in the art is only roughly mentioned in the description and is not described in detail in the same point as the invention; the specific differences are detailed as follows:
because the right-angle rod 10 is arranged on the inner wall of the casing in advance, the short slips 22 can be adopted when the slips 22 are designed, when the anchoring mechanism 2 is expanded, namely the top ends of the slips 22 deflect outwards, the elastic plate 8 is expanded to push the top ends of the two expansion plates 222 to separate from each other, the elastic plate 8 can be hung on the right-angle rod 10, and the top ends of the expansion plates 222 do not need to be pressed on the inner wall of the casing, so that the deformation of the casing is reduced, and the abrasion of the slips 22 can be reduced; meanwhile, the wellhead does not need to be blocked through a complex process when the packer is used, if foreign matters fall into the well, the sealing mechanism 1 is pulled up, the rubber sleeve is released from expansion, the foreign matters are not blocked by the rubber sleeve any more and fall to the turning-up seat 221, then the sealing mechanism 1 is pushed downwards, the elastic plate 8 is blocked by the right-angle rod 10, the whole body is not moved downwards, the limiting device 6 is moved downwards due to inertia to release the locking of the pushing device 5, the foreign matters remained at the turning-up seat 221 are pushed to fall, the slips 22 can be withdrawn into the slip frame 21 again, when the anchoring mechanism 2 is pulled to move upwards, the slips 22 do not rub against the inner wall of the casing, the packer can be pulled out more conveniently, and the taking-out efficiency is improved.
Referring to the attached drawings 1, 5 and 6 of the specification, the pushing device 5 comprises a rotating ring 51, a plurality of connecting blocks 52 are fixedly connected to the bottom of the rotating ring 51, a horizontal pushing spring 53 is fixedly connected to one side of each connecting block 52, one end of each horizontal pushing spring 53 far away from each connecting block 52 is fixedly connected to the inside of the annular ring 4, a plurality of vertical cleaning rods 54 are fixedly connected to the bottom of the rotating ring 51, the bottom end of the vertical cleaning rod 54 is positioned at the top of the horizontal section of the everting seat 221, the connecting blocks 52 and the vertical cleaning rod 54 are in one-to-one correspondence with the slips 22, the transverse push spring 53 is in a compressed state at the bottom of the connecting block 52 through the inserted limiting device 6, the annular ring 4 is movably arranged at the bottom of the rotating ring 51, the annular ring 4 is internally provided with arc-shaped grooves 17 with the same number as the connecting blocks 52, the transverse push spring 53 and the connecting blocks 52 are both positioned in the arc-shaped grooves 17, and the bottom of the arc-shaped grooves 17 is provided with through grooves 18 in a penetrating manner.
When downward thrust is applied to the sealing mechanism 1, the elastic plate 8 is blocked by the right-angle rod 10, the limiting device 6 continues to move due to the downward inertia force, so that the locking of the connecting block 52 is released, the transverse push spring 53 in a compressed state pushes the connecting block 52 to move, the connecting block 52 drives the rotating ring 51 to rotate, the rotating ring 51 drives the vertical cleaning rod 54 at the bottom of the rotating ring 51 to move, and because the bottom end of the vertical cleaning rod 54 is positioned at the top of the horizontal section of the outward-turning seat 221, when the vertical cleaning rod 54 rotates horizontally and circumferentially, foreign matters at the top of the outward-turning seat 221 can be pushed to fall off until the vertical cleaning rod 54 reaches the other end of the through groove 18; and because the restoring force of the plurality of transverse pushing springs 53 acts simultaneously, the superimposed pushing force is larger, thereby realizing better cleaning effect.
Referring to the attached drawings 6 and 8 in the specification, the limiting device 6 comprises a counterweight inserting column 61, the top end of the counterweight inserting column 61 is movably inserted into a hole in the bottom of the connecting block 52, a supporting spring 62 is fixedly connected to the bottom end of the counterweight inserting column 61, the supporting spring 62 is located inside the annular ring 4 at the bottom of the arc-shaped groove 17, the connecting block 52 is in contact with the bottom groove wall of the arc-shaped groove 17, and a steel ball 63 is embedded in the side surface of the counterweight inserting column 61. The weight posts 61 may compress the support springs 62 and enter the annular ring 4.
When the limiting device 6 continues to move under the action of downward inertia force, the balance weight inserting column 61 extrudes and deforms the supporting spring 62, and due to the arrangement of the steel balls 63, the friction force between the balance weight inserting column 61 and the connecting block 52 is small when the balance weight inserting column 61 moves downwards, so that the balance weight inserting column 61 can be smoothly separated from the bottom of the connecting block 52, the connecting block 52 is released, the transverse pushing spring 53 can transversely push the connecting block 52 to move, and finally the vertical cleaning rod 54 is driven to execute cleaning action.
Referring to the attached drawing 2 of the specification, the bottom end of the vertical cleaning rod 54 is sleeved with a plurality of conical blocks 11, the bottom of each conical block 11 is fixedly connected with a connecting spring 12, the bottom end of each connecting spring 12 is fixedly connected with a support ring 13, each support ring 13 is fixedly sleeved on the outer side of the vertical cleaning rod 54, the diameter of the top end of each conical block 11 is smaller than that of the bottom end of the corresponding conical block, and the diameter of each support ring 13 is smaller than that of the bottom end of each conical block 11.
When the vertical cleaning rod 54 horizontally rotates to clean the foreign matters at the top of the everting seat 221, due to the existence of the conical block 11 on the outer side of the vertical cleaning rod 54, when the vertical cleaning rod 54 pushes the foreign matters, the foreign matters can utilize the inclined surface of the conical block 11 to press the conical block 11 downwards, so that the connecting spring 12 is compressed, the conical block 11 has a scraping and rubbing effect on the surface of the foreign matters, the probability of dropping the chips on the surface of the foreign matters is improved, meanwhile, the reaction force of the conical block 11 has an upward pushing action force on the foreign matters, and when the vertical cleaning rod 54 horizontally pushes the foreign matters, the foreign matters can be overturned upwards, so that the friction force between the foreign matters and the everting seat 221 is reduced, and the probability of dropping the foreign matters under the pushing action of the foreign matters is increased.
Referring to the attached fig. 2 and fig. 9 of the specification, the side of the supporting ring 13 is fixedly hinged with a plurality of needles 14, and the surface of the needle 14 is provided with saw teeth 15.
When syringe needle 14 supports on the foreign matter, if the foreign matter is the material of stone class, when syringe needle 14 pricks on the foreign matter, can make the foreign matter surface stab out the poroid, because sawtooth 15 exists, part between two adjacent poroids in foreign matter surface can be rubbed by sawtooth 15 and drop, not only make foreign matter surface wear and tear drop during the friction of sawtooth 15, simultaneously because the foreign matter surface is stabbed out individual poroid by syringe needle 14, sawtooth 15 is when foreign matter surface friction, the volume that the piece dropped is bigger, the probability that the friction dropped also becomes great, thereby can reduce the weight of foreign matter, improve the probability that promotes the foreign matter and drop.
Referring to the attached figure 8 of the specification, the top end of the counterweight insertion column 61 is a conical top, a counterweight positioning rod 16 is inserted in the maximum diameter position of the conical top in a non-slip manner, and the top end of the counterweight positioning rod 16 is closer to the center line of the counterweight insertion column 61 than the bottom end; the balance weight positioning rod 16 is slidably inserted in the conical top.
After post 61 is inserted to the counter weight from the decline of connecting block 52 bottom and is broken away from, violently push away spring 53 and promote connecting block 52 lateral shifting for whole swivel 51 drives connecting block 52 and crosses the counter weight and insert post 61 after, and supporting spring 62 is compressed so that the counter weight inserts in post 61 gets into arc wall 17, when the contact of counter weight insert post 61 and connecting block 52 side, can play the impetus to connecting block 52, and vertical clearance pole 54's clearance intensity is bigger.
For example, the vertical cleaning bar 54 is provided with guide blocks slidably provided on the side walls of the through slot 18 so that the vertical cleaning bar 54 remains vertical without deflection. The bottom surface of the arc-shaped groove 17 of the annular ring 4 is provided with a groove, the supporting spring 62 is arranged in the groove, and the groove is also used for accommodating the counter weight inserting column 61 after downward movement so as to avoid obstructing the transverse movement of the connecting block 62. The bottom end of the counterweight positioning rod 16 is formed with a friction bottom end. After the balance weight inserting column 61 is separated from the connecting block 52, the bottom end of the balance weight positioning rod 16 obliquely extends downwards out of the balance weight inserting column 61 and contacts the annular ring 4 with the friction bottom end so as to perform positioning by using friction force. When the counterweight inserting column 61 is pushed into the hole at the bottom of the connecting block 52 by the supporting spring 62, the counterweight positioning rod 16 can be pressed to be contracted into the conical top.
For example, a blocking plate is convexly arranged on one side of the connecting block 52 away from the vertical cleaning rod 54 and used for blocking the transverse pushing spring 53. The bottom surface of the baffle is an inclined surface, and the height position of the inclined surface is gradually reduced along one side departing from the vertical cleaning rod 54. The pointed end of conical top is provided with the slip pearl for the slip pearl on the conical top that breaks away from the connecting block 52 bottom can keep off the bottom surface of establishing the board relatively and slide, avoids it to violently pushing away spring 53 and causes the influence, the return of also being convenient for follow-up counter weight post 61 simultaneously, promptly after violently pushing away spring 53 and releasing its impulsive force that does not continue behind the elasticity, the inclined plane then mutually supports with supporting spring 62 so that the baffle moves connecting block 52 reverse movement, make counter weight post 61 resume get into in connecting block 52 bottom hole, in order to resume the locking to connecting block 52.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a negative pressure setting packer, includes sealing mechanism (1), its characterized in that: an anchoring mechanism (2) is arranged at the bottom of the sealing mechanism (1), and a centering body mechanism (3) is arranged at the bottom of the anchoring mechanism (2); the anchoring mechanism (2) comprises a slip rack (21) and a plurality of slips (22), wherein the slips (22) are installed inside the slip rack (21) through hoops; an annular ring (4) is arranged on the outer side of the slip frame (21) at the top of the slip (22), a pushing device (5) is arranged on the annular ring (4), the slip (22) comprises an outward turning seat (221) and two opening plates (222) hinged at the top of the outward turning seat, inclined planes are arranged at the bottoms of the two opening plates (222) and the top of the outward turning seat (221), an included angle formed by an inclined plane on the opening plate (222) and the upper part of a mirror image surface between the two opening plates (222) is an acute angle, an included angle formed by an inclined plane on the outward turning seat (221) and the lower part of the mirror image surface between the two opening plates (222) is an acute angle, limiting grooves (7) are formed in one opposite sides of the two opening plates (222), the same elastic plate (8) is arranged in the two limiting grooves (7), the opening plates (222) can be retracted into the side wall of the slip frame (21), and the bottom ends of the elastic plates (8) are fixedly connected with vertical moving blocks (9); the outside of the slip frame (21) is provided with a plurality of right angle rods (10) which are uniformly distributed in the circumferential direction, the right angle rods (10) correspond to the slip frame (21) one by one, and the right angle rods (10) are fixedly connected to the inner wall of a preset sleeve in an oil well.
2. The negative pressure setting packer of claim 1, wherein: thrust unit (5) include swivel becket (51), a plurality of connecting blocks of swivel becket (51) bottom fixedly connected with (52), connecting block (52) one side fixedly connected with violently pushes away spring (53), violently push away one end fixed connection that connecting block (52) were kept away from in spring (53) inside annular ring (4), a plurality of vertical clearance poles of swivel becket (51) bottom fixedly connected with (54), connecting block (52) bottom makes violently push away spring (53) and be in compression state through stop device (6) of pegging graft, the same arc wall (17) of quantity with connecting block (52) are seted up to annular ring (4) inside, violently push away spring (53) and connecting block (52) and all be located inside arc wall (17), arc wall (17) bottom link up and has seted up through groove (18).
3. The negative pressure setting packer of claim 2, wherein: the bottom end of the vertical cleaning rod (54) is positioned at the top of the horizontal section of the outward turning seat (221), and the connecting block (52) and the vertical cleaning rod (54) are in one-to-one correspondence with the slips (22).
4. The negative pressure setting packer of claim 3, wherein: stop device (6) insert post (61) including the counter weight, and the activity of counter weight insert post (61) top is pegged graft in connecting block (52) bottom hole, and post (61) bottom fixedly connected with supporting spring (62) is inserted to the counter weight, and inside supporting spring (62) were located annular ring (4) of arc wall (17) bottom, and connecting block (52) and arc wall (17) bottom cell wall contact, the embedding of counter weight insert post (61) side has steel ball (63).
5. The negative pressure setting packer of claim 4, wherein: a plurality of cone blocks (11) are sleeved at the bottom end of the vertical cleaning rod (54), connecting springs (12) are fixedly connected to the bottoms of the cone blocks (11), supporting rings (13) are fixedly connected to the bottom ends of the connecting springs (12), and the supporting rings (13) are fixedly sleeved on the outer side of the vertical cleaning rod (54).
6. The negative pressure setting packer of claim 5, wherein: the diameter of the top end of the conical block (11) is smaller than that of the bottom end, and the diameter of the support ring (13) is smaller than that of the bottom end of the conical block (11).
7. The negative pressure setting packer of claim 6, wherein: the side part of the supporting ring (13) is fixedly hinged with a plurality of needles (14), and the surface of each needle (14) is provided with sawteeth (15).
8. The negative pressure setting packer of claim 7, wherein: the top end of the counterweight insertion column (61) is a conical top, a counterweight positioning rod (16) is inserted in the maximum diameter position of the conical top in a non-slip mode, the top end of the counterweight positioning rod (16) is closer to the central line of the counterweight insertion column (61) than the bottom end, and the counterweight positioning rod (16) is inserted in the conical top in a sliding mode.
9. The negative pressure setting packer of claim 8, wherein: the vertical cleaning rod (54) is provided with a guide block, the guide block is slidably arranged on the side wall of the through groove (18) so that the vertical cleaning rod (54) is kept vertical, the bottom surface of the arc-shaped groove (17) of the annular ring (4) is provided with a groove, the supporting spring (62) is installed in the groove, the groove is also used for accommodating the downward-moving counterweight inserting column (61), and the bottom end of the counterweight positioning rod (16) is provided with a friction bottom end.
10. The negative pressure set packer of claim 9, wherein: keep away from one side of vertical clearance pole (54) protruding being equipped with of connecting block (52) and keep off and establish the board, be used for keeping off and establish horizontal push spring (53), the bottom surface that keeps off and establish the board is the inclined plane, the high position on inclined plane reduces along the one side that deviates from vertical clearance pole (54) gradually, the pointed end on conical top is provided with the slip pearl, the slip pearl on conical top after breaking away from connecting block (52) bottom can keep off relatively and establish the bottom surface slip of board, the inclined plane can make the fender establish board and move connecting block (52) reverse movement with supporting spring (62) are mutually supported, guide counter weight insert post (61) insert again in connecting block (52) bottom hole, in order to resume the locking to connecting block (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111071305.8A CN113513287B (en) | 2021-09-14 | 2021-09-14 | Negative pressure setting packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111071305.8A CN113513287B (en) | 2021-09-14 | 2021-09-14 | Negative pressure setting packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113513287A CN113513287A (en) | 2021-10-19 |
| CN113513287B true CN113513287B (en) | 2021-12-24 |
Family
ID=78063088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111071305.8A Active CN113513287B (en) | 2021-09-14 | 2021-09-14 | Negative pressure setting packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113513287B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2139408C1 (en) * | 1998-05-25 | 1999-10-10 | Закрытое акционерное общество "ЮКСОН" | Mechanical packer |
| CN201050336Y (en) * | 2007-05-29 | 2008-04-23 | 辽河石油勘探局 | Down-hole cement plugging device |
| CN102071893A (en) * | 2010-12-03 | 2011-05-25 | 中国石油天然气股份有限公司 | Underground self-expansion hanger |
| CN104141469A (en) * | 2014-07-25 | 2014-11-12 | 中国石油化工股份有限公司 | Continuous oil pipe dragging layering fracturing packer |
| CN105350938A (en) * | 2015-12-14 | 2016-02-24 | 天津汇铸石油设备科技有限公司 | Mechanical packer |
| CN107178336A (en) * | 2017-06-05 | 2017-09-19 | 西南石油大学 | A kind of outburst prevention device of packing element |
| CN112443286A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Plasma cutting device and method for underground oil casing |
-
2021
- 2021-09-14 CN CN202111071305.8A patent/CN113513287B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2139408C1 (en) * | 1998-05-25 | 1999-10-10 | Закрытое акционерное общество "ЮКСОН" | Mechanical packer |
| CN201050336Y (en) * | 2007-05-29 | 2008-04-23 | 辽河石油勘探局 | Down-hole cement plugging device |
| CN102071893A (en) * | 2010-12-03 | 2011-05-25 | 中国石油天然气股份有限公司 | Underground self-expansion hanger |
| CN104141469A (en) * | 2014-07-25 | 2014-11-12 | 中国石油化工股份有限公司 | Continuous oil pipe dragging layering fracturing packer |
| CN105350938A (en) * | 2015-12-14 | 2016-02-24 | 天津汇铸石油设备科技有限公司 | Mechanical packer |
| CN107178336A (en) * | 2017-06-05 | 2017-09-19 | 西南石油大学 | A kind of outburst prevention device of packing element |
| CN112443286A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Plasma cutting device and method for underground oil casing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113513287A (en) | 2021-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113513287B (en) | Negative pressure setting packer | |
| CN116988744B (en) | Expansion sealing centralizer | |
| CN112796813A (en) | Light hydraulic support for caving coal | |
| CN113605851B (en) | Rope core-taking off-axis anti-inclination drilling tool | |
| CN216446888U (en) | Quick hole sealing device of gas drainage drilling | |
| CN112609663B (en) | Municipal road reconstruction surveying instrument and surveying method thereof | |
| CN214460702U (en) | Pile foundation quality detection device | |
| CN113802995B (en) | PDC drill bit for directional drilling | |
| CN113484080B (en) | Civil engineering intelligent exploration sampling device for airport pavement | |
| CN216284359U (en) | House construction engineering supervision is with sampling device who has cutting assembly | |
| CN210622752U (en) | Pressure-controlled releasable slip fisher | |
| CN211004670U (en) | Surface water cyclone sand removing device | |
| CN218117690U (en) | Directional drilling reaming device for coal mine | |
| CN210343243U (en) | Diamond thin-wall drill bit | |
| CN217783411U (en) | Anti-sticking bores reaming drill bit for probing | |
| CN215632846U (en) | Raise boring machine with automatic rod connecting and disassembling function | |
| CN117536539B (en) | Drilling device and method for mine wall breaking exploitation | |
| CN116733005A (en) | Temporary support device for underground foundation pit construction | |
| CN212588819U (en) | Digging device for landscaping | |
| CN217712486U (en) | Infinite full-bore switchable sleeve sliding sleeve switch packer for oil field | |
| CN218643058U (en) | Mine underground steel wire rope reamer | |
| CN217868944U (en) | Pneumatic drill propeller | |
| CN220576310U (en) | Rock blasting device | |
| CN115749653B (en) | Drilling sampling device with core protection function for mine exploration | |
| CN216305969U (en) | Hydraulic support deformation side guard plate withdrawing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231109 Address after: 410000 room 101-104, building a16, Daopo community, Wangyue street, Yuelu District, Changsha City, Hunan Province Patentee after: CHANGSHA JIZHI INNOVATION INDUSTRIAL DESIGN Co.,Ltd. Address before: 257000 room 1403, Huanghai building, 239 Donger Road, Dongying Development Zone, Shandong Province Patentee before: Dongying guangnian Petroleum Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |