CN216477248U - Oil pipe blanking plug - Google Patents
Oil pipe blanking plug Download PDFInfo
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- CN216477248U CN216477248U CN202122767700.1U CN202122767700U CN216477248U CN 216477248 U CN216477248 U CN 216477248U CN 202122767700 U CN202122767700 U CN 202122767700U CN 216477248 U CN216477248 U CN 216477248U
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- packer
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Abstract
The utility model discloses an oil pipe plug, which comprises a packing mechanism and a sliding and clamping mechanism which are connected with each other; the packing mechanism is a leather cup packer, and the sliding clamping mechanism is a sliding clamping mechanism; the lower end of the leather cup packer is connected with the upper end of the sliding slip mechanism; the sliding slip mechanism comprises a sliding block body, a pressure relief hole and a sliding slip; the outer wall of the sliding block body is provided with a slip mounting axial groove, and the radial inner end of the sliding slip is slidably mounted in the slip mounting axial groove; an axial blind hole is formed in the center of the upper half section of the slider body, an upper port of the blind hole is communicated with a central cavity channel of the packing cup packer, a radial pressure relief hole is formed, and the inner end of the pressure relief hole is communicated with an inner cavity of the blind hole. The outer wall of the sliding block body is also provided with an unloading groove which is axially communicated. The device is put into a preset position in a well, the leather cup expands to plug the oil pipe due to the action of pressure difference, and the oil pipe is locked by the plug. The construction safety risk and the labor intensity are reduced.
Description
Technical Field
The utility model relates to the technical field of oilfield workover construction tools, in particular to an oil pipe plug.
Background
In the field of oil and gas field development, in order to ensure smooth and safe construction operation of an oil-water well, in some oil-gas wells, in order to reduce pollution of an oil-gas layer and keep formation pressure, well workover operation is usually carried out by adopting an under-pressure operation technology for better oil and gas exploitation, the technology for controlling the sealing in an oil pipe is a core technology of under-pressure operation, and is a key for effectively controlling fluid in the well not to leak out of the oil pipe, and a switch for plugging the oil pipe by an oil pipe plug is a key device for under-pressure operation.
At present, in the field of oil and gas operation, various types of pressured plug devices are provided, for example, "oil pipe plug device" with the publication number of CN108661592B, "a plug device" with the publication number of CN105370237B, "salvageable oil pipe plug device" with the publication number of CN102733776B and other patent products, the plug devices are complex in structure, cannot be accurately positioned, time and labor are wasted in throwing and working procedures, and thus construction procedures are increased, time is wasted, and construction cost and expense are increased.
The CN201010281004.3 crosses aperture tubing plug includes core bar (1), and the cover is equipped with jack catch assembly (4) on core bar (1), goes up slips direction taper sleeve (5), well adapter sleeve (6), slips direction taper sleeve (7) down, lower adapter sleeve (8), sheath assembly (9) and blocks up assembly (10), and the cover is equipped with slips assembly (11) on well adapter sleeve (6), goes up pressure spring (12), pressure spring (13) and slips assembly (14) down. The large-inner-diameter oil pipe below the oil pipe can be plugged through small holes of downhole tubular column tools such as a water distributor and the like, the large-inner-diameter oil pipe has the advantages of being firm in fixing in the oil pipe and high in plugging reliability, the downhole oil pipe can be reliably plugged, well blowout is prevented, normal water well overhaul operation is guaranteed, the effects of environment protection and safe production are achieved, the use safety is high, the use is more convenient, and the safety of oil field production is more facilitated.
The CN201010617329.4 ash throwing type oil pipe plug comprises a supporting block positioning device, a limiting clamp shaft, a slip positioning device and an ash throwing barrel; the left supporting block and the right supporting block are installed on the supporting block positioning device, the upper portion of the supporting block positioning device is provided with a slip limiting concave cavity, and the lower portion of the limiting clamping shaft is fixed on the supporting block positioning device through a lower limiting shear pin. The structure is reasonable and compact, the use is convenient, the supporting block is extended by lifting, the supporting block positioning device at the lower part realizes lower positioning to ensure that the supporting block positioning device cannot move upwards, the slip is extended by lifting to cut the lower positioning shear pin, the slip positioning device at the upper part realizes upper positioning to ensure that the slip cannot move downwards, the upper positioning shear pin is cut by continuing lifting to ensure that the ash throwing cylinder is separated from the lower device and release cement mortar, and finally the internal sealing of the oil pipe column is realized.
The CN201010617295.9 conical releasing type oil pipe plug comprises a slide block fishing spear positioning device, a middle rod, a leather cup driving device and an upper positioning device; the upper end of the sliding block fishing spear positioning device is fixedly provided with an intermediate rod, the lower part of the outer side of the intermediate rod is fixedly provided with a leather cup driving device, and the upper part of the intermediate rod is fixedly provided with an upper positioning device. The oil pipe internal sealing device has the advantages of being reasonable and compact in structure, convenient to use, capable of enabling the left sliding block and the right sliding block to move downwards to protrude the lance outside and be clamped on the inner wall of an oil pipe through lifting, meanwhile, the conical releasing rubber sleeve and the auxiliary sealing rubber sleeve are propped open under the action of pulling force and are clamped on the inner wall of the oil pipe, the effect of sealing the inside of the oil pipe is achieved, and the oil pipe internal sealing device has the advantages of being simple in structure, low in cost, safe, reliable, simple, convenient and efficient.
Publication (bulletin) No.: CN104879087B, publication (public notice) day: 2017-09-15 provides an occluder comprising: the central tube is provided with a first end and a second end which are opposite to each other, and the side walls of the central tube close to the first end and the second end are respectively provided with a liquid inlet hole and a liquid outlet hole in a penetrating way; the sealing rubber sleeve is sleeved outside the central tube; the sliding sleeve is connected with the first end of the central pipe in a sliding mode and is provided with a first working position for blocking the liquid outlet hole and a second working position for releasing the blocking of the liquid outlet hole. The cavity of the blanking plug and the liquid inlet hole and the liquid outlet hole which are communicated with the cavity of the blanking plug provide a fluid channel; when deblocking, the sliding sleeve is lifted upwards to be converted from the first working position to the second working position, and high-pressure liquid at the bottom of the well returns upwards through a formed fluid channel, so that the purpose of pressure relief is achieved, and the occurrence of blowout accidents is avoided from the source.
The technical solutions of the above-disclosed technologies, the technical problems to be solved, and the advantageous effects thereof are all different from the present invention, and no technical inspiration exists in the above-disclosed technical documents for more technical features, technical problems to be solved, and advantageous effects thereof.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide the oil pipe plug, the device is put into a preset position in a well, the leather cup expands to plug the oil pipe due to the action of pressure difference, and the plug locks the oil pipe. The construction safety risk and the labor intensity are reduced.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the oil pipe blanking plug comprises a packing mechanism and a sliding clamp mechanism which are connected;
the packing mechanism is a leather cup packer, and the sliding and clamping mechanism is a sliding and clamping mechanism; the lower end of the packing cup packer is connected with the upper end of the sliding slip mechanism;
the sliding slip mechanism comprises a sliding block body, a pressure relief hole and a sliding slip;
the outer wall of the sliding block body is provided with a slip mounting axial groove, and the radial inner end of the sliding slip is slidably mounted in the slip mounting axial groove;
an axial blind hole is formed in the center of the upper half section of the slider body, an upper port of the blind hole is communicated with a central cavity channel of the packing cup packer, a radial pressure relief hole is formed, and the inner end of the pressure relief hole is communicated with an inner cavity of the blind hole.
Furthermore, the outer wall of the sliding block body is also provided with an unloading groove which is axially communicated.
Furthermore, a fixing block used for limiting the sliding slips is installed at the bottom of the slip installation axial groove.
Further, slider body lower extreme is guide head structure.
Furthermore, the leather cup packers are arranged in two groups and are sequentially connected from top to bottom.
Further, the packing cup packer comprises a packing cup gland, a sealing packing cup joint and a packing cup central tube;
the sealing leather cup is sleeved outside the leather cup central tube and is tightly pressed by the leather cup pressing cover;
the lower end of the leather cup central pipe is provided with a sealing leather cup joint.
Further, the upper end of an upper set of leather cup packer of the two sets of leather cup packers is connected with a safety joint, and a sealing leather cup joint of a lower set of leather cup packer is connected with the upper end of the sliding block body.
Further, a pressure cover is installed on the inner wall of the safety joint.
Compared with the prior art, the utility model has the following beneficial effects:
the device has simple structure, convenient installation and strong controllability, and after the tool pipe is thrown or put into the well to be preset, the wellhead valve is opened, and the leather cup expands under the action of the upper and lower pressure differences to plug the oil pipe column; meanwhile, under the action of pressure in the well, the slip teeth of the sliding block move radially along the rail, and the radial force of the rail on the sliding block forces the slip teeth to bite into the inner wall of the pipe column, so that the oil pipe is locked by the plug, the advantage of positioning and sealing the oil pipe is embodied, and the positioning and sealing performance of the plug is improved. The construction current situation is changed, the construction time is reduced, the construction safety risk is reduced, the labor intensity is greatly reduced, and the safety of operation under pressure is ensured.
Drawings
FIG. 1 is a schematic structural view of the tubing plug of the present invention.
In the figure: the safety joint comprises a safety joint 1, a pressure cover 2, a leather cup gland 3, a sealing leather cup 4, a sealing leather cup joint 5, a leather cup central pipe 6, a sliding block body 7, a pressure relief hole 8, a sliding slip 9, a fixing block 10 and an unloading groove 11.
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.
Example 1:
referring to fig. 1, the present invention provides a technical solution:
the oil pipe blanking plug comprises a packing mechanism and a sliding clamp mechanism which are connected;
the packing mechanism is a leather cup packer, and the sliding and clamping mechanism is a sliding and clamping mechanism; the lower end of the packing cup packer is connected with the upper end of the sliding slip mechanism;
the sliding slip mechanism comprises a sliding block body 7 and a sliding slip 9;
the outer wall of the sliding block body is provided with a slip mounting axial groove, and the radial inner end of the sliding slip is slidably mounted in the slip mounting axial groove;
an axial blind hole is formed in the center of the upper half section of the slider body, an upper port of the blind hole is communicated with a central cavity channel of the packing cup packer, a radial pressure relief hole 8 is formed, and the inner end of the pressure relief hole is communicated with an inner cavity of the blind hole.
Furthermore, the outer wall of the sliding block body is also provided with an unloading groove 11 which is axially communicated.
Further, a fixing block 10 used for limiting the sliding slips is installed at the bottom of the slip installation axial groove.
Further, slider body lower extreme is guide head structure.
Furthermore, the leather cup packers are arranged in two groups and are sequentially connected from top to bottom.
Further, the packing cup packer comprises a packing cup gland 3, a sealing packing cup 4, a sealing packing cup joint 5 and a packing cup central tube 6;
the sealing leather cup is sleeved outside the leather cup central tube and is tightly pressed by the leather cup pressing cover;
the lower end of the leather cup central pipe is provided with a sealing leather cup joint.
Further, safe joint 1 is connected to the upper end of the upper group of leather cup packer among them of two sets of leather cup packers, and wherein the sealed leather cup joint of lower group of leather cup packer is connected with slider body upper end.
Further, the inner wall of the safety joint is provided with a pressure cover 2.
The lower part of the safety joint 1 is internally provided with a screw thread and is provided with a pressure cover 2, a leather cup gland 3 and a sealing leather cup 4 are arranged on a leather cup central tube 6, the leather cup central tube 6 is connected with the safety joint 1 through the screw thread, and the lower part of the leather cup central tube 6 is provided with a sealing leather cup joint 5;
the leather cup central tube 6, the leather cup gland 3, the sealing leather cup 4 and the sealing leather cup joint 5 are divided into two groups which are divided into an upper level and a lower level;
the central tube 6 of the next-stage leather cup is connected with the inner wall of the joint 5 of the last-stage sealing leather cup in a threaded manner, and the leather cup gland 3 is arranged in the middle;
the leather cup central pipe 6 is provided with a pressure relief hole 8;
a boss with a screw thread at the center is arranged at the upper center of the slider body 7, the boss is provided with the screw thread, and the next-stage sealing leather cup joint 5 is connected to the central boss on the slider body 7 in a screw thread manner;
two groups of sliding slips 9 are arranged on the sliding block body 7, and the sliding slips 9 are limited through a fixing block 10;
the slider body 7 is provided with a pressure relief hole 8;
the slide block body 7 is provided with an unloading groove 11.
After a throwing or tool pipe is put into a well for a preset position, a well mouth valve is opened, and a sealing leather cup expands under the action of the upper and lower pressure differences to plug an oil pipe column; meanwhile, under the action of pressure in the well, slip teeth of the sliding block move radially along the rail, and the radial force of the rail on the sliding block forces the slip teeth to bite into the inner wall of the pipe column, so that the oil pipe is locked by the plug.
Example 2:
referring to fig. 1, the present invention provides a technical solution:
the oil pipe blanking plug comprises a packing mechanism and a sliding clamp mechanism which are connected;
the packing mechanism is a leather cup packer, and the sliding and clamping mechanism is a sliding and clamping mechanism; the lower end of the packing cup packer is connected with the upper end of the sliding slip mechanism;
the sliding slip mechanism comprises a sliding block body 7 and a sliding slip 9;
the outer wall of the sliding block body is provided with a slip mounting axial groove, and the radial inner end of the sliding slip is slidably mounted in the slip mounting axial groove;
an axial blind hole is formed in the center of the upper half section of the slider body, an upper port of the blind hole is communicated with a central cavity channel of the packing cup packer, a radial pressure relief hole 8 is formed, and the inner end of the pressure relief hole is communicated with an inner cavity of the blind hole.
Furthermore, the outer wall of the sliding block body is also provided with an unloading groove 11 which is axially communicated.
Further, a fixing block 10 used for limiting the sliding slips is installed at the bottom of the slip installation axial groove.
The utility model belongs to the technical field of oil field related pressurized operation, and does not belong to a tool matched with a water injection process pipe column.
The condition that the sediment bottom ball is leaked due to untight setting can occur in the process of using the sediment bottom ball in a well, the oil reservoir dynamic is seriously influenced, and a large amount of operation cost and manpower resources are consumed for replacement through operation treatment. The utility model solves the problem of effective self-supporting treatment of bottom ball leakage.
Although fig. 1 is used in all the above embodiments, it is obvious to those skilled in the art that a separate drawing is not shown as long as parts or structural features missing from the embodiments are removed from the drawing. As will be clear to the skilled person. Of course, the embodiment with more components is only the best embodiment, and the embodiment with less components is the basic embodiment, but the basic object of the utility model can also be achieved, so all the modified embodiments are within the protection scope of the utility model.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The oil pipe blanking plug comprises a packing mechanism and a sliding clamp mechanism which are connected;
the packer is characterized in that the packing mechanism is a leather cup packer, and the sliding and clamping mechanism is a sliding and clamping mechanism; the lower end of the packing cup packer is connected with the upper end of the sliding slip mechanism;
the sliding slip mechanism comprises a sliding block body, a pressure relief hole and a sliding slip;
the outer wall of the sliding block body is provided with a slip mounting axial groove, and the radial inner end of the sliding slip is slidably mounted in the slip mounting axial groove;
an axial blind hole is formed in the center of the upper half section of the slider body, an upper port of the blind hole is communicated with a central cavity channel of the packing cup packer, a radial pressure relief hole is formed, and the inner end of the pressure relief hole is communicated with an inner cavity of the blind hole.
2. The tubing plug as claimed in claim 1, wherein the outer wall of the slider body is further provided with an unloading groove which axially penetrates through the outer wall of the slider body.
3. The tubing plug as claimed in claim 1 or 2 wherein a retaining block for retaining the slip slips is mounted to the bottom of the slip mounting axial groove.
4. The tubing plug according to claim 1 or 2, wherein the lower end of the slider body is a guide head structure.
5. The tubing plug of claim 1 or 2, wherein two sets of cup packers are arranged, connected one above the other.
6. The tubing plug of claim 5, wherein the cup packer comprises a cup gland, a sealing cup joint, a cup center tube;
the sealing leather cup is sleeved outside the leather cup central tube and is tightly pressed by the leather cup pressing cover;
the lower end of the leather cup central pipe is provided with a sealing leather cup joint.
7. The tubing plug of claim 6, wherein the upper packer of the two sets of cup packers is connected to the safety joint at the upper end, and the lower packer of the two sets of cup packers is connected to the upper end of the slider body at the sealing cup joint.
8. The tubing plug as claimed in claim 7, wherein the safety joint is internally wall mounted with a pressure cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122767700.1U CN216477248U (en) | 2021-11-12 | 2021-11-12 | Oil pipe blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122767700.1U CN216477248U (en) | 2021-11-12 | 2021-11-12 | Oil pipe blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216477248U true CN216477248U (en) | 2022-05-10 |
Family
ID=81451115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122767700.1U Active CN216477248U (en) | 2021-11-12 | 2021-11-12 | Oil pipe blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216477248U (en) |
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2021
- 2021-11-12 CN CN202122767700.1U patent/CN216477248U/en active Active
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