CN213392085U - Hydraulic throwing blanking plug - Google Patents
Hydraulic throwing blanking plug Download PDFInfo
- Publication number
- CN213392085U CN213392085U CN202021859541.7U CN202021859541U CN213392085U CN 213392085 U CN213392085 U CN 213392085U CN 202021859541 U CN202021859541 U CN 202021859541U CN 213392085 U CN213392085 U CN 213392085U
- Authority
- CN
- China
- Prior art keywords
- rubber cylinder
- seat
- pressing cap
- cylinder
- fishing
- 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.)
- Expired - Fee Related
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- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 3
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000004873 anchoring Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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Abstract
A hydraulic throwing blanking plug comprises a fishing rod, wherein a fishing head is arranged at the upper end of the fishing rod, the lower end of the fishing rod is screwed with a central rod, a sliding block type slip is sleeved below the fishing head through a dovetail groove guide rail of a slip seat, the lower end of the slip seat is in threaded connection with a rubber cylinder seat, a compression rubber cylinder, a centrum pressing cap, an upper expansion rubber cylinder, an H-shaped pressing cap and a conical cylinder are sequentially sleeved below a step at the large-diameter end of the upper rubber cylinder seat of the rubber cylinder seat, the lower end of the conical cylinder is in threaded connection with the middle lower part of the central rod, a tower type rubber cylinder is sleeved at the bottom of the large-diameter end of the central rod, and the pressing cap and a guide head are respectively in threaded connection with the bottom of the central rod; when the oil pipe is anchored, the sliding block clamping tile tightly clamps the inner wall of the oil pipe under the action of pressure, so that the plug is prevented from being incapable of anchoring due to shaking of the oil pipe; in the setting process, the upper expansion rubber cylinder and the lower expansion rubber cylinder form two sealing rings under the mutual extrusion of the cone pressing cap and the cone cylinder body, so that the reliable sealing of the oil pipe is ensured; reasonable structure, convenient operation, high efficiency and safety.
Description
Technical Field
The utility model relates to an oil pipe blocks up instrument, concretely relates to blanking plug is put in to hydraulic pressure.
Background
When the oil field water injection well is operated under pressure, the interior of an oil pipe needs to be plugged in advance, the pressure of the oil pipe needs to be sealed, and then the operation of pulling up and pulling down the oil pipe is realized through the cooperation of an operation machine under pressure and a workover rig. Traditional slip arm formula blanking plug, the slip arm hangs upside down and covers at the slip, slip cover and slip arm suit together on the center tube, the slip arm distributes in the periphery of center tube, when the pressure plays the oil pipe operation carrying out, because oil pipe's shake, the slip cover can drive the slip arm drunkenness from top to bottom, the dead oil pipe inner wall of unable reliable card, lead to the blanking plug to scurry, the blanking plug also can be because of oil pipe's shake and unable reliable sealed simultaneously, at this moment the blanking plug can be under the impact of bottom hole pressure, the rush out oil pipe rises rapidly, and then cause unnecessary incident.
Disclosure of Invention
In order to overcome the problem that above-mentioned prior art exists, the utility model aims to provide a blanking plug is put in to hydraulic power can block dead oil pipe inner wall when oil pipe shakes, can be sealed firm when oil pipe shakes again, has rational in infrastructure, convenient operation, sits and seals safe and reliable and high-efficient practical advantage.
In order to realize the purpose, the utility model discloses a technical scheme be:
a hydraulic throwing blanking plug comprises a fishing rod 2, wherein the bottom end of the fishing rod 2 is in threaded connection with the top end of a central rod 1, and a fishing head 2a is arranged at the top end of the fishing rod 2; on the fishing rod 2, the bottom of the fishing head 2a is sleeved with a slip seat 3, 3 trapezoidal groove guide rails 3a are uniformly distributed along the axial direction of the slip seat 3, the trapezoidal groove guide rails 3a are in adaptive connection with the bottom of a sliding block type slip 4, and the tail ends of the trapezoidal groove guide rails 3a are provided with stop blocks 5; the bottom of slip seat 3 and the rubber cylinder seat major diameter end 6a threaded connection at rubber cylinder seat 6 top, rubber cylinder seat major diameter end 6a bottom is equipped with first step 6b, on the rubber cylinder seat 6 and first step 6b below, the cover is equipped with compression rubber cylinder 7 in proper order, the cap 8 is pressed to the centrum, go up inflation rubber cylinder 9a, the cap 9b is pressed to the H shape, lower inflation rubber cylinder 9c and toper barrel 10, the lower extreme threaded connection of toper barrel 10 is in the big diameter end 1a upper end of well core rod, the second step 1b below cover of the big diameter end 1a bottom of well core rod is equipped with tower type rubber cylinder 11, the bottom of tower type rubber cylinder 11, press cap 12 and direction head 13 respectively threaded connection in well core rod 1 bottom.
The top end of the upper expansion rubber cylinder 9a and the bottom end of the lower expansion rubber cylinder 9c are both provided with a bell mouth 9d which are respectively nested with the cone tips of the cone pressing cap 8 and the cone body 10.
The bottom end of the upper expansion rubber cylinder 9a and the top end of the lower expansion rubber cylinder 9c are vulcanized and are nested with the H-shaped pressing cap 9b.
The periphery of the tower-shaped rubber cylinder 11 is provided with a plurality of layers of unidirectional rubber rings 11 a.
The utility model has the advantages as follows:
through the trapezoidal groove guide rail 3a of evenly distributed on the circumference of the slip bowl 3 and the slider slips 4 of suit on each trapezoidal groove guide rail 3a, when oil pipe anchors, each slider slips 4 can be in tight card death at the oil pipe inner wall, prevents that the blanking plug from because of the unable anchoring of oil pipe shake.
The top end of the upper expansion rubber cylinder 9a and the bell mouth 9d at the bottom end of the lower expansion rubber cylinder 9c are respectively nested with the conical tips of the cone pressing cap 8 and the cone body 10, the bottom end of the upper expansion rubber cylinder 9a and the top end of the lower expansion rubber cylinder 9c are vulcanized and nested in the H-shaped pressing cap, and in the setting process, two sealing rings are formed under the mutual extrusion of the cone pressing cap 8 and the cone body 10, so that the reliable sealing of the oil pipe is ensured.
To sum up, the utility model has the advantages of rational in infrastructure, convenient operation, seat seal safe and reliable and high-efficient practical.
Drawings
Fig. 1 is a general assembly structure diagram of the present invention.
Fig. 2 is a structural view of the slip bowl 3 of the present invention.
In the figure: 1. a center pole; 1a, a large-diameter end of a center rod; 1b, a second step; 2. a fishing rod; 2a, fishing a fishing head; 3. a slip seat; 3a, a trapezoidal groove guide rail; 4. a slider type slip; 5. a stopper; 6, a rubber cylinder seat; 6a, a large-diameter end of the rubber cylinder seat; 6b, a first step; 7. compressing the rubber cylinder; 8. pressing the cap on the vertebral body; 9a, mounting an expansion rubber cylinder; a 9b.H shaped press cap; 9C, a lower expansion rubber cylinder; 9d, a horn mouth; 10, a conical cylinder body; 11. a tower-shaped rubber cylinder; 11a, a one-way rubber ring; 12. pressing the cap; 13. a guide head.
Detailed Description
The following describes the present invention in detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the hydraulic throwing blanking plug comprises a fishing rod 2, wherein the bottom end of the fishing rod 2 is in threaded connection with the top end of a central rod 1, and a fishing head 2a is arranged at the top end of the fishing rod 2; on the fishing rod 2, the bottom of the fishing head 2a is sleeved with a slip seat 3, 3 trapezoidal groove guide rails 3a are uniformly distributed along the axial direction of the slip seat 3, the trapezoidal groove guide rails 3a are in adaptive connection with the bottom of a sliding block type slip 4, and the tail ends of the trapezoidal groove guide rails 3a are provided with stop blocks 5; the bottom of slip seat 3 and the rubber cylinder seat major diameter end 6a threaded connection at rubber cylinder seat 6 top, rubber cylinder seat major diameter end 6a bottom is equipped with first step 6b, on the rubber cylinder seat 6 and first step 6b below, the cover is equipped with compression rubber cylinder 7 in proper order, the cap 8 is pressed to the centrum, go up inflation rubber cylinder 9a, the cap 9b is pressed to the H shape, lower inflation rubber cylinder 9c and toper barrel 10, the lower extreme threaded connection of toper barrel 10 is in the big diameter end 1a upper end of well core rod, the second step 1b below cover of the big diameter end 1a bottom of well core rod is equipped with tower type rubber cylinder 11, the bottom of tower type rubber cylinder 11, press cap 12 and direction head 13 respectively threaded connection in well core rod 1 bottom.
The top end of the upper expansion rubber cylinder 9a and the bottom end of the lower expansion rubber cylinder 9c are both provided with a bell mouth 9d which are respectively nested with the cone tips of the cone pressing cap 8 and the cone body 10.
The bottom end of the upper expansion rubber cylinder 9a and the top end of the lower expansion rubber cylinder 9c are vulcanized and are embedded and sleeved with the H-shaped pressing cap 9b, and the aim of vulcanization is to enable the rigid body structures of the rubber cylinders and the H-shaped pressing cap to be connected more tightly.
The periphery of the tower-shaped rubber cylinder 11 is provided with a plurality of layers of unidirectional rubber rings 11 a.
The utility model discloses a theory of operation does: when the utility model is put into an oil pipe, a pump truck starts to press from the upper part, because the tower-shaped rubber cylinder 11 is provided with a plurality of layers of unidirectional circular rubber rings 11a, and the outer diameter of the circular rubber rings 11a is matched with the inner diameter of the oil pipe, the unidirectional circular rubber rings 11a of the tower-shaped rubber cylinder 11 are outwards spread to generate downward thrust; when the utility model reaches the setting position and the pumping pressure reaches 12Mpa, the pump is stopped, the pressure is quickly released, the pressure of the wellhead is released, the liquid pressure pushes the tower-shaped rubber cylinder 11, the tower-shaped rubber cylinder 11 drives the blanking plug to go up, and then the sliding block slips 4 tightly clamp the inner wall of the oil pipe, so that the device is anchored; then under the action of the upper and lower pressure difference, the bell mouth 9d at the top end of the upper expansion rubber cylinder 9a and the bottom end of the lower expansion rubber cylinder 9c is rapidly expanded under the mutual pushing action of the cone pressing cap 8 and the cone cylinder 10 to realize the first double sealing with the oil pipe, and then the compression rubber cylinder 7 is also extruded and expanded to realize the second sealing, and the inner diameter of the oil pipe is reliably sealed.
Claims (4)
1. A hydraulic throwing blanking plug comprises a fishing rod (2), wherein the bottom end of the fishing rod (2) is in threaded connection with the top end of a central rod (1), and a fishing head (2a) is arranged at the top end of the fishing rod (2); the method is characterized in that: on the fishing rod (2), a slip seat (3) is sleeved at the bottom of a fishing head (2a), 3 trapezoidal groove guide rails (3a) are uniformly distributed along the axial direction of the slip seat (3), the trapezoidal groove guide rails (3a) are in adaptive connection with the bottoms of the sliding block slips (4), and the tail ends of the trapezoidal groove guide rails (3a) are provided with stop blocks (5); the bottom of the slip seat (3) is in threaded connection with a large diameter end (6a) of a rubber cylinder seat at the top of the rubber cylinder seat (6), a first step (6b) is arranged at the bottom of the large diameter end (6a) of the rubber cylinder seat, a compression rubber cylinder (7), a cone pressing cap (8), an upper expansion rubber cylinder (9a), an H-shaped pressing cap (9b), a lower expansion rubber cylinder (9c) and a conical cylinder (10) are sequentially sleeved on the rubber cylinder seat (6) and below the first step (6b), a lower end thread of the conical cylinder (10) is screwed at the upper end of the large diameter end (1a) of the central rod, a tower-shaped rubber cylinder (11) is sleeved below a second step (1b) at the bottom of the large diameter end (1a) of the central rod, the bottom of the tower-shaped rubber cylinder (11), the pressing cap (12) and the guide head (13) are respectively screwed at the bottom end of the central rod (1).
2. A hydraulic dispensing obturator according to claim 1, characterised in that: the top end of the upper expansion rubber cylinder (9a) and the bottom end of the lower expansion rubber cylinder (9c) are respectively provided with a horn mouth (9d) which is respectively nested with the cone tip of the cone pressing cap (8) and the cone body (10).
3. A hydraulic dispensing obturator according to claim 1, characterised in that: the bottom end of the upper expansion rubber cylinder (9a) and the top end of the lower expansion rubber cylinder (9c) are vulcanized and are embedded with the H-shaped pressing cap (9 b).
4. A hydraulic dispensing obturator according to claim 1, characterised in that: the periphery of the tower-shaped rubber cylinder (11) is provided with a plurality of layers of unidirectional rubber rings (11 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021859541.7U CN213392085U (en) | 2020-08-31 | 2020-08-31 | Hydraulic throwing blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021859541.7U CN213392085U (en) | 2020-08-31 | 2020-08-31 | Hydraulic throwing blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392085U true CN213392085U (en) | 2021-06-08 |
Family
ID=76212433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021859541.7U Expired - Fee Related CN213392085U (en) | 2020-08-31 | 2020-08-31 | Hydraulic throwing blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213392085U (en) |
-
2020
- 2020-08-31 CN CN202021859541.7U patent/CN213392085U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |