CN217028856U - Self-sealing compression packer - Google Patents
Self-sealing compression packer Download PDFInfo
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- CN217028856U CN217028856U CN202122518524.8U CN202122518524U CN217028856U CN 217028856 U CN217028856 U CN 217028856U CN 202122518524 U CN202122518524 U CN 202122518524U CN 217028856 U CN217028856 U CN 217028856U
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Abstract
The utility model discloses a self-sealing compression packer, which comprises a central pipe; also comprises a leather cup and a rubber cylinder; the leather cup and the rubber cylinder are both sleeved on the outer wall of the central tube, and the leather cup is located above the rubber cylinder. The bottom of the leather cup is connected with the leather cup seat through threads. The leather cup and the leather cup seat jointly form a leather cup assembly, and the leather cup assembly is at least arranged in one group on the outer wall of the central pipe. The rubber tube is at least provided with one group on the outer wall of the central tube, and the end face of the rubber tube is provided with a spacing ring which is also sleeved on the central tube. The rubber cylinder is compressed by the leather cup, so that multi-stage sealing is realized, the bearing capacity and the sealing reliability are effectively improved, and the pressure test success rate and the accuracy of the blowout preventer are improved.
Description
Technical Field
The utility model relates to the technical field of pressure test in the petroleum industry, in particular to a self-sealing compression packer.
Background
According to statistics, the workover workload of the victory oil field increases year by year, according to the well control requirement of the victory oil field, the field pressure test of a well control device is required before workover operation construction, the currently common pressure test method is to put a cup packer below a well head, a pump truck is adopted to carry out the pressure test of a blowout preventer, and pressure test tubular columns sequentially comprise the following steps from bottom to top: the plug, the cup packer, the sieve tube and the hanger tightly push four jackscrews of the four-way sleeve, the full-sealing flashboard is closed to seal the well, clear water is injected into the four-way sleeve, and the pressure test pump is pressed to complete the pressure test operation. Because the bearing capacity of the packing cup packer is low, when the high-pressure test is carried out on the blowout preventer, the packing cup is easy to deform, the sealing effect is influenced, and the construction success rate of the pressure test is reduced. The self-sealing compression packer is researched aiming at the problems, a rubber cup is used for compressing a rubber cylinder, multi-stage sealing is realized, the bearing capacity and the sealing reliability are effectively improved, the pressure test success rate and the accuracy rate of the blowout preventer are improved, and the self-sealing compression packer has a good popularization and application prospect.
CN201220348411.6 relates to a sealing leather cup sealing device of preventer pressure testing, including adjusting the lead screw and cup jointing the leather cup on adjusting the lead screw, the regulation lead screw that leather cup inner chamber and top contained is run rotary and is connected with the top connection, and the rotation that the top connection contains through adjusting the lead screw reciprocates in the leather cup to expansion leather cup realizes sealing sleeve, adopts the hand pump to replace the pressure testing pump, has reduced construction cost.
The disadvantages of this reference are: the manual tensioning of the leather cup does not change the defect of low pressure bearing capacity of the leather cup packer and has a complex structure.
CN201020199106.6 relates to a special pressure testing instrument of preventer, and this patent comprises tapered plug, well rod, safe fender dish, oil pipe nipple joint, liquid hole etc.. The conical plug is cylindrical, the lower part of the cylinder is provided with a cone, and the wall of the cylinder is provided with external threads of the oil pipe, so that the plug and the short section of the oil pipe are integrated, and the operation time of pressure test is shortened.
The disadvantages of this reference are: the blowout preventer semi-seal pressure test can be carried out only, the blowout preventer full seal and the casing head can not be tested, and the requirement of the pressure test of the blowout preventer in an oil field is not met.
In summary, the technical solutions of the above-disclosed technologies, the technical problems to be solved, and the resulting advantages are all different from those of the present invention, and no technical inspiration exists in the above-disclosed technical documents for further technical features, technical problems to be solved, and advantageous effects of the present invention.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a self-sealing compression packer, which uses a leather cup to compress a rubber cylinder, realizes multi-stage sealing, effectively improves the bearing capacity and the sealing reliability, and improves the success rate and the accuracy rate of pressure test of a blowout preventer.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a self-sealing compression packer comprises a central tube;
also comprises a leather cup and a rubber cylinder;
the leather cup and the rubber cylinder are both sleeved on the outer wall of the central tube, and the leather cup is located above the rubber cylinder.
Further, the bottom of the leather cup is connected with the leather cup seat through threads.
Furthermore, the leather cup and the leather cup seat jointly form a leather cup assembly, and the leather cup assembly is at least arranged in one group on the outer wall of the central pipe.
Furthermore, the rubber tube is at least provided with one group on the outer wall of the central tube, and the end face of the rubber tube is provided with a spacer ring which is also sleeved on the central tube.
Furthermore, the center tube outer wall installation adjustable ring, the adjustable ring is located the leather cup top of top, and the adjustable ring is used for compressing tightly leather cup, leather cup seat, packing element, spacer ring.
Further, when the upper part of the leather cup is pressed, the leather cup moves downwards to compress the rubber cylinder.
Furthermore, the upper end of the central pipe is connected with an upper joint, and the upper joint is simultaneously used as an axial limiting piece of the adjusting ring.
Furthermore, the lower end of the central pipe is connected with a lower joint, and the lower joint is simultaneously used as an axial limiting piece of the bottommost spacer ring.
Compared with the prior art, the utility model has the following beneficial effects:
when the packer tests pressure, the self-sealing compression packer is connected well and a downhole pipe column is put in, the pump truck is pressurized from the four-way joint of the sleeve, pressure is transmitted to the space above the hanger through the pressure testing channel, the pressure is transmitted to the leather cup, the rubber cup compresses the rubber sleeve seat downwards, and the annular space of the sealing oil sleeve realizes the pressure testing of the packer. Aiming at the pressure test characteristics of the blowout preventer, the rubber cup is adopted to compress the rubber barrel, so that multistage sealing is realized, and the construction efficiency and the success rate are effectively improved.
1. A leather cup is adopted to compress the rubber cylinder, so that multi-stage sealing is realized; 2. the bearing capacity is high, and the structure is reliable; 3. automatic sealing and unsealing can be realized; 4. simple structure and convenient maintenance.
Drawings
Fig. 1 is a schematic structural diagram of a self-sealing compression packer provided by the utility model.
In the figure: the device comprises an upper connector 1, an adjusting ring 2, a central tube 3, a leather cup 4, a leather cup seat 5, a rubber cylinder 6, a spacer ring 7 and a lower connector 8.
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:
a self-sealing compression packer comprises a central tube 3;
also comprises a leather cup 4 and a rubber cylinder 6;
the leather cup and the rubber cylinder are sleeved on the outer wall of the central tube, and the leather cup is located above the rubber cylinder.
Further, the bottom of the leather cup is connected with the leather cup seat 5 through threads.
Furthermore, the leather cup and the leather cup seat jointly form a leather cup assembly, and the leather cup assembly is at least arranged in one group on the outer wall of the central pipe.
Furthermore, the rubber tube is at least provided with one group on the outer wall of the central tube, the end face of the rubber tube is provided with a spacer ring 7, and the spacer ring is also sleeved on the central tube.
Furthermore, the center tube outer wall installation adjustable ring 2, the adjustable ring is located the leather cup top of top, and the adjustable ring is used for compressing tightly leather cup, leather cup seat, packing element, spacer ring.
Further, when the upper part of the leather cup is pressed, the leather cup moves downwards to compress the rubber cylinder.
Further, the upper end of the central tube is connected with an upper joint 1, and the upper joint is simultaneously used as an axial limiting piece of the adjusting ring.
Further, the lower end of the central tube is connected with a lower joint 8, and the lower joint is simultaneously used as an axial limiting piece of the bottommost spacer ring.
Top connection 1, lower clutch 8 be connected with center tube 3 through the screw thread, adjust through adjustable ring 2, 4 seats on leather cup seat 5, be connected through screw thread and leather cup seat 5, carry out the interval through the spacer ring between the packing element 6 at different levels, leather cup 4, leather cup seat 5, packing element 6, spacer ring 7 all suit are on center tube 3.
When the blowout preventer for downhole operation is used for on-site pressure test, the sieve tube, the self-sealing compression packer and the plug are sequentially connected from top to bottom and are put into a well, after the sieve tube, the self-sealing compression packer and the plug are put into a designed position, the hanger is well connected and is arranged on a well mouth, a jackscrew is arranged, and the blowout preventer is installed. When the full-seal pressure test is carried out, the full seal is closed, the pressure test pump is used for pressurizing from the sleeve, the pressure is transmitted to the leather cup 4 through the oil sleeve annular space, the rubber cup 4 downwards compresses the rubber sleeve 6 for sealing, the oil sleeve annular space is sealed, the pressure is stabilized after the specified pressure is reached, the pressure of the pressure test pump is relieved after the pressure stabilization is finished, the self-seal compression packer is unsealed under the elastic action of the rubber sleeve, a blowout preventer pressure test tubular column for downhole operation is proposed, and the full-seal pressure test is finished; when semi-sealed pressure testing is performed, the upper portion of the mesh nipple is connected with the lower portion of the plug valve and is connected with the hanger, the semi-sealed nipple is closed to hold the oil pipe, the pressure testing pump is pressed from the sleeve, pressure enters the oil sleeve annulus through the mesh nipple and the sieve pipe and is transmitted to the leather cup 4, the rubber cup 4 compresses the rubber sleeve 6 downwards to seal, the oil sleeve annulus seals, pressure stabilization is performed after specified pressure is achieved, pressure relief is performed on the pressure testing pump after pressure stabilization is completed, the self-sealing compression type packer is deblocked under the elastic effect of the rubber sleeve, a blowout preventer pressure testing tubular column for downhole operation is provided, and semi-sealed pressure testing is completed.
Example 2:
referring to fig. 1, the present invention provides a technical solution:
a self-sealing compression packer comprises a central tube 3;
also comprises a leather cup 4 and a rubber cylinder 6;
the leather cup and the rubber cylinder are both sleeved on the outer wall of the central tube, and the leather cup is located above the rubber cylinder.
Furthermore, the bottom of the leather cup is seated in the leather cup seat to form the leather cup assembly, and the leather cup assembly is at least provided with one group on the outer wall of the central tube.
Furthermore, the rubber tube is at least provided with one group on the outer wall of the central tube, the end face of the rubber tube is provided with a spacer ring 7, and the spacer ring is also sleeved on the central tube.
Example 3:
referring to fig. 1, the present invention provides a technical solution:
a self-sealing compression packer comprises a central tube 3;
also comprises a leather cup 4 and a rubber cylinder 6;
the leather cup and the rubber cylinder are sleeved on the outer wall of the central tube, and the leather cup is located above the rubber cylinder.
Further, the bottom of the leather cup is connected with the leather cup seat 5 through threads.
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 in 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 which are not discussed in the present application and the connection mode of the parts in the present application belong to the known technologies in the 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 used broadly and should be construed to include, for example, "connected" may be a fixed connection, a detachable 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 of the present specification, the description of "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 (1)
1. A self-sealing compression packer comprises a central tube;
also comprises a leather cup and a rubber cylinder;
the leather cup and the rubber cylinder are sleeved on the outer wall of the central tube, and the leather cup is positioned above the rubber cylinder;
the bottom of the leather cup is connected with the leather cup seat;
the leather cup and the leather cup seat jointly form a leather cup assembly, and the leather cup assembly is arranged on the outer wall of the central pipe in at least one group;
the rubber cylinders are arranged on the outer wall of the central tube in at least one group, and the end faces of the rubber cylinders are provided with spacing rings which are also sleeved on the central tube;
the leather cup sealing device is characterized in that an adjusting ring is mounted on the outer wall of the central pipe, the adjusting ring is located above the uppermost leather cup, and the adjusting ring is used for tightly pressing the leather cup, the leather cup seat, the rubber cylinder and the spacer ring;
when the upper part of the leather cup is pressed, the leather cup moves downwards to compress the rubber cylinder;
the upper end of the central pipe is connected with an upper joint which is simultaneously used as an axial limiting piece of the adjusting ring;
the lower end of the central pipe is connected with a lower joint which is simultaneously used as an axial limiting piece of the bottommost spacer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122518524.8U CN217028856U (en) | 2021-10-19 | 2021-10-19 | Self-sealing compression packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122518524.8U CN217028856U (en) | 2021-10-19 | 2021-10-19 | Self-sealing compression packer |
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| Publication Number | Publication Date |
|---|---|
| CN217028856U true CN217028856U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122518524.8U Active CN217028856U (en) | 2021-10-19 | 2021-10-19 | Self-sealing compression packer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116481931A (en) * | 2023-06-26 | 2023-07-25 | 沧州市德泰克钻井装备有限公司 | Multistage blowout preventer shutoff pressure testing device |
-
2021
- 2021-10-19 CN CN202122518524.8U patent/CN217028856U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116481931A (en) * | 2023-06-26 | 2023-07-25 | 沧州市德泰克钻井装备有限公司 | Multistage blowout preventer shutoff pressure testing device |
| CN116481931B (en) * | 2023-06-26 | 2023-09-22 | 沧州市德泰克钻井装备有限公司 | Multistage blowout preventer shutoff pressure testing device |
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