CN210460579U - High pressure resistant self-expanding packer - Google Patents
High pressure resistant self-expanding packer Download PDFInfo
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- CN210460579U CN210460579U CN201921487999.1U CN201921487999U CN210460579U CN 210460579 U CN210460579 U CN 210460579U CN 201921487999 U CN201921487999 U CN 201921487999U CN 210460579 U CN210460579 U CN 210460579U
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Abstract
The utility model provides a high pressure resistant self-expansion packer, relates to oil field downhole tool technical field, including top connection, lower clutch, center tube and packing element, top connection and lower clutch are respectively through threaded connection at the upper and lower both ends of center tube, and the packing element suit is on the center tube, the structure of packing element includes the inner tube of making by inflation rubber and the urceolus of making by ordinary packing element rubber, and the inner tube is inlayed in the urceolus, and the surface processing of urceolus has the aperture that is used for crossing liquid, respectively is provided with a cross section for triangle-shaped's ring channel on two terminal surfaces of urceolus, the opening of ring channel orientation top connection or lower clutch. The utility model discloses the packing element structure to from inflation packer has carried out redesign, has add the urceolus of being made by ordinary packing element rubber in the outside of the inner tube of being made by from inflation rubber, and the obdurability of ordinary packing element rubber is good, and anti tear ability is strong, can effectively protect the inner tube, prevents that the inner tube from excessively warping or tearing by the high pressure to effectively improve the compressive capacity of packer.
Description
Technical Field
The utility model belongs to the technical field of the oil field instrument in the pit, especially, relate to a high pressure resistant self-expanding packer.
Background
The packer is a common downhole tool in oil field production, the types of the packer are various, a self-expansion packer is provided, a rubber cylinder of the packer is made of rubber which can self-expand when meeting oil, and the packer is very practical in many special occasions. However, due to the limitations of its physical properties, the rubber tube made of self-expanding rubber has inferior tear strength and soft texture, and is easily damaged or deformed by tearing when being subjected to high pressure, thereby losing its sealing effect. Therefore, it is necessary to design a self-expanding packer with high pressure resistance to expand the application range of the self-expanding packer.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem who exists among the background art, the utility model provides a high pressure resistant self-expanding packer.
The utility model provides a technical problem adopt following technical scheme to realize: the utility model provides a high pressure resistant self-expansion packer, including top connection, lower clutch, center tube and packing element, top connection and lower clutch are respectively through threaded connection at the upper and lower both ends of center tube, and the packing element suit is on the center tube, the structure of packing element includes the inner tube of making by inflation rubber and the urceolus of making by ordinary packing element rubber, and the inner tube is inlayed in the urceolus, and the surface processing of urceolus has the aperture that is used for crossing liquid, respectively is provided with a cross section for triangle-shaped's ring channel on two terminal surfaces of urceolus, the opening of ring channel orientation top connection or lower clutch.
And notches are correspondingly arranged on the upper joint and the lower joint and the annular groove. And skeleton rings are arranged in the inner cylinder, and the diameter of an inner hole of each skeleton ring is equal to the inner diameter of the inner cylinder. Two ends of the inner cylinder extend to the end face of the rubber cylinder, namely the inner cylinder and the outer cylinder are the same in length.
The utility model has the advantages that: the utility model discloses the packing element structure to from inflation packer has carried out redesign, has add the urceolus of being made by ordinary packing element rubber in the outside of the inner tube of being made by from inflation rubber, and the obdurability of ordinary packing element rubber is good, and anti tear ability is strong, can effectively protect the inner tube, prevents that the inner tube from excessively warping or tearing by the high pressure to effectively improve the compressive capacity of packer. Additionally, the utility model discloses set up the ring channel at urceolus both ends, this ring channel has played the effect of "packing cup", and after packer upside or downside pressure-bearing, the inboard of ring channel can be supported by pressure for the rubber in the ring channel outside tightly attached on the intraductal wall of sleeve, pressure is big more, and the pressure of laminating is big more, thereby further increases the pressure-resistant ability of packer.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-upper joint, 2-gap, 3-annular groove, 4-outer cylinder, 5-small hole, 6-inner cylinder, 7-skeleton ring, 8-central tube, and 9-lower joint.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
this embodiment includes top connection 1, lower clutch 9, center tube 8 and packing element, and top connection 1 and lower clutch 9 pass through threaded connection respectively at the upper and lower both ends of center tube 8, and the packing element suit is on center tube 8. The above is a common structure in the prior art, and is not described herein again.
The rubber sleeve structurally comprises an inner sleeve 6 made of expanded rubber and an outer sleeve 5 made of common rubber sleeve rubber, wherein the inner sleeve 6 is embedded in the outer sleeve 4, the common rubber sleeve rubber is good in obdurability and strong in tear resistance, the inner sleeve 6 can be effectively protected, the inner sleeve 6 is prevented from being excessively deformed or torn by high pressure, and therefore the pressure resistance of the packer is effectively improved. In actual production, the inner cylinder and the outer cylinder are formed separately and then assembled together.
In order to ensure that the self-expanding rubber can be fully contacted with oil, a small hole 5 for passing liquid needs to be processed on the outer surface of the outer cylinder 4 so as to ensure that the inner cylinder 6 is fully expanded.
Two end faces of the outer cylinder 4 are respectively provided with an annular groove 3 with a triangular cross section, and the opening of the annular groove 3 faces the upper joint 1 or the lower joint 9. This ring channel 3 has played the effect of "packing cup", and after packer upside or downside pressure-bearing, the inboard of ring channel 3 can be supported by pressure for the rubber in the ring channel 3 outside is tightly attached on the sleeve pipe inner wall, and pressure is big more, and the pressure of laminating is big more, thereby further increases the pressure-resistant ability of packer.
The upper joint 1 and the lower joint 9 are provided with notches 2 corresponding to the annular grooves 3, so that oil can be conveniently contacted with the end part of the inner cylinder 6. It should be noted that the width of the gap 2 should not be too large, otherwise the rubber cylinder would be scratched when the well is run.
A framework ring 7 is arranged in the inner cylinder 6, and the framework ring 7 can effectively reduce the distortion and displacement in the expansion process of the self-expanding rubber, so that the sealing reliability is improved. The diameter of the inner hole of each skeleton ring 7 is equal to the inner diameter of the inner cylinder 6.
The two ends of the inner cylinder 6 extend to the end face of the rubber cylinder, namely the inner cylinder 6 and the outer cylinder 4 are the same in length, and after the inner cylinder 6 expands, the diameters of the two ends of the outer cylinder 4 are also expanded, so that the outer sides of the two ends of the outer cylinder 4 are ensured to be attached to the inner wall of the sleeve.
Claims (4)
1. The utility model provides a high pressure resistant self-expansion packer, includes top connection (1), lower clutch (9), center tube (8) and packing element, and top connection (1) and lower clutch (9) are respectively through threaded connection at the upper and lower both ends of center tube (8), and the packing element suit is on center tube (8), its characterized in that: the structure of the rubber cylinder comprises an inner cylinder (6) made of expanded rubber and an outer cylinder (4) made of common rubber cylinder rubber, wherein the inner cylinder (6) is embedded in the outer cylinder (4), small holes (5) used for passing liquid are processed in the outer surface of the outer cylinder (4), two annular grooves (3) with triangular cross sections are respectively arranged on two end faces of the outer cylinder (4), and openings of the annular grooves (3) face the upper joint (1) or the lower joint (9).
2. The high pressure resistant self-expanding packer of claim 1, wherein: and notches (2) are correspondingly arranged on the upper joint (1) and the lower joint (9) and the annular groove (3).
3. The high pressure resistant self-expanding packer of claim 1, wherein: skeleton rings (7) are arranged in the inner cylinder (6), and the diameter of an inner hole of each skeleton ring (7) is equal to the inner diameter of the inner cylinder (6).
4. The high pressure resistant self-expanding packer of claim 1, wherein: two ends of the inner cylinder (6) extend to the end face of the rubber cylinder, namely the inner cylinder (6) and the outer cylinder (4) are the same in length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487999.1U CN210460579U (en) | 2019-09-09 | 2019-09-09 | High pressure resistant self-expanding packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487999.1U CN210460579U (en) | 2019-09-09 | 2019-09-09 | High pressure resistant self-expanding packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210460579U true CN210460579U (en) | 2020-05-05 |
Family
ID=70433522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921487999.1U Active CN210460579U (en) | 2019-09-09 | 2019-09-09 | High pressure resistant self-expanding packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210460579U (en) |
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2019
- 2019-09-09 CN CN201921487999.1U patent/CN210460579U/en active Active
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