CN209908454U - Isolation packer device of novel sealing structure for thickened oil thermal production well - Google Patents
Isolation packer device of novel sealing structure for thickened oil thermal production well Download PDFInfo
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- CN209908454U CN209908454U CN201920572197.4U CN201920572197U CN209908454U CN 209908454 U CN209908454 U CN 209908454U CN 201920572197 U CN201920572197 U CN 201920572197U CN 209908454 U CN209908454 U CN 209908454U
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Abstract
The utility model discloses an isolation packer device of a novel seal structure for viscous crude thermal recovery well. The isolation packer device comprises a packer body; the packer body includes a mandrel; an upper joint, an upper gauge ring, a sealing assembly, a lower gauge ring, a hydraulic assembly and a lower joint are sequentially sleeved outside the mandrel from top to bottom; the upper joint is respectively connected with the mandrel and the upper gauge ring, the upper joint and the mandrel are sealed through a graphite sealing ring, and the upper joint and the upper gauge ring are sealed through a metal sealing ring; the lower joint is respectively connected with the mandrel and a piston sleeve in the hydraulic assembly, and the lower joint and the piston sleeve are sealed through a metal sealing ring. Compared with the existing isolation packer, the isolation packer device with the novel sealing structure adopts module sealing, and trapezoidal spacer rings are installed between rubber cylinders.
Description
Technical Field
The utility model relates to an isolation packer device that is used for novel seal structure of viscous crude thermal recovery well belongs to oil field development production technical field.
Background
The viscosity of the thickened oil is high at normal temperature, and the exploitation difficulty is high by adopting a conventional method. The heavy oil fields at home and abroad are mostly exploited by thermal oil recovery modes such as steam huff and puff or steam flooding, and therefore, high-temperature steam with the temperature of 300-350 ℃ needs to be injected in the process of exploiting the heavy oil so as to reduce the viscosity of the heavy oil and improve the fluidity of oil bodies, but a series of problems which need to be solved urgently are exposed. Wherein high temperature failure of the packer seal actuator is a significant problem. Because of the action of more complex thermal corrosion and thermal stress relative to the conventional cold production well under the condition of heat exchange, the corrosion and high-temperature deformation failure are more easily caused by multiple times of huff and puff operations, thereby causing safety accidents such as sealing failure and the like. In addition, the thermal recovery is easier to produce sand compared with a cold recovery well, the existing multi-port thermal recovery well causes production interruption and underground overhaul operation due to sand production, and the service life of a thermal recovery underground packer is obviously shortened while the sand production aggravates the erosion damage of an underground pipe column.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an isolation packer device that is used for novel seal structure of viscous crude thermal recovery well can satisfy the requirement of thermal recovery well sealing performance under the high temperature condition, improves the efficiency of annotating the operation of taking in and send out many rounds of steam, solves the actual production operation difficult problem.
The utility model provides an isolation packer device of a novel sealing structure for a thickened oil thermal production well, which comprises a packer body;
the packer body comprises a mandrel;
an upper joint, an upper gauge ring, a sealing assembly, a lower gauge ring, a hydraulic assembly and a lower joint are sequentially sleeved outside the mandrel from top to bottom;
the upper joint is respectively connected with the mandrel and the upper gauge ring, the upper joint and the mandrel are sealed through a graphite sealing ring, and the upper joint and the upper gauge ring are sealed through a metal sealing ring;
the lower joint is respectively connected with the mandrel and a piston sleeve in the hydraulic assembly, and the lower joint and the piston sleeve are sealed through a metal sealing ring; the lower connector is connected with the mandrel through threads.
In the isolation packer device, the sealing assembly comprises two copper rings and three rubber cylinders arranged between the two copper rings;
a spacing ring is arranged between two adjacent rubber cylinders;
the copper ring and the rubber cylinder as well as the spacing ring and the rubber cylinder are matched in a fitting manner.
In the isolation packer device, the section of the spacer ring along the axial direction of the mandrel is trapezoidal;
by adopting the sealing assembly with the structure, when the packer is set, the three rubber cylinders are extruded and deformed, the compression between the three rubber cylinders is changed into the compression between the three rubber cylinders and the spacer ring, the three rubber cylinders can climb and compress outwards along the angle of the side surface of the spacer ring during the compression deformation, and the climbing effect is superior to the compression climbing effect among the three rubber cylinders.
In the isolation packer device, the piston in the hydraulic assembly, the piston sleeve and the mandrel are sealed through the graphite sealing ring.
In the isolation packer device, the piston sleeve and the mandrel are sealed through the graphite sealing ring.
The utility model discloses keep apart packer device, graphite sealing washer and the sealed mode of metal seal ring mutually supporting are all adopted to upper portion and lower part.
The utility model discloses an in being applied to viscous crude oil field thermal recovery well, isolation packer device compares with prior art, and its beneficial effect is:
(1) the utility model uses the module seal to replace the O-shaped seal ring in the original isolation packer, and the module seal is the double combined seal of the graphite seal ring and the metal seal ring;
(2) the utility model discloses a have the spacer ring between the three packing element, the spacer ring tangent plane is trapezoidal, and closely laminate between the packing element. When the packer is set, the three rubber cylinders are extruded and deformed, the original compression among the three rubber cylinders is changed into the compression among the three rubber cylinders and the spacer ring, and the three rubber cylinders can climb outwards along the angle of the side face of the spacer ring during the compression deformation.
Drawings
Figure 1 is the utility model discloses seal structure keeps apart packer structure sketch map.
The respective symbols in the figure are as follows:
1. an upper joint; 2. a graphite seal ring; 3. a metal seal ring; 4. an upper gauge ring; 5. a copper ring; 6. a rubber cylinder I; 7. a rubber cylinder II; 8, a spacer ring; 9. a lower gauge ring; 10. a piston; 11. a locking ring; 12. positioning a pin; 13. shearing the pin; 14. a piston sleeve; 15. a graphite seal ring; 16. a graphite seal ring; 17. a graphite seal ring; 18. a metal seal ring; 19. a lower joint; 20. a mandrel.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the detailed description of the embodiments will be further described with reference to the accompanying drawings.
The utility model provides an keep apart packer that is used for novel seal structure of high temperature thermal production well, its structural schematic diagram is shown as figure 1, this novel seal structure's isolation packer mainly includes top connection 1, graphite sealing washer 2, metal seal ring 3, go up rule ring 4, copper ring 5, packing element I6, packing element II7, spacer ring 8, lower rule ring 9, piston 10, catch 11, dowel 12, shear pin 13, piston bush 14, graphite sealing washer 15, graphite sealing washer 16, graphite sealing washer 17, metal seal ring 18, lower clutch 19, parts such as mandrel 20.
Specifically, the upper joint 1 is connected with the mandrel 20 and the upper gauge ring 4 through threads respectively, the joint of the upper joint 1 and the mandrel 20 is sealed through a graphite sealing ring 2, and the joint of the upper joint 1 and the upper gauge ring 4 is sealed through a metal sealing ring 3. A sealing assembly is arranged between the upper gauge ring 4 and the lower gauge ring 9 and respectively comprises a copper ring 5, a rubber cylinder I6, a spacer ring 8, a rubber cylinder II7, a spacer ring 8, a rubber cylinder I6 and a copper ring 5 from top to bottom, wherein the cross section of the spacer ring 8 along the axial direction of the mandrel 20 is trapezoidal, and the spacer ring 8 is tightly attached to the rubber cylinder I6 and the rubber cylinder II 7. When the packer is set, the rubber cylinder I6 and the rubber cylinder II7 are extruded and deformed, the compression between the original rubber cylinder I6 and the rubber cylinder II7 is changed into the compression between the rubber cylinder I6, the rubber cylinder II7 and the spacer ring 8, the rubber cylinder I6 and the rubber cylinder II7 can climb outwards along the angle of the side surface of the spacer ring 8 during compression and deformation, and the climbing effect is superior to the compression climbing effect between the rubber cylinder I6 and the rubber cylinder II 7.
The lower gauge ring 9 is connected with the piston 10 through threads, the lock ring 11 is turned upside down after being screwed, the opening of the lock ring 11 is aligned with the positioning hole of the piston 10, and the positioning pin 12 is installed. A shear pin 13 is arranged between the piston 10 and the piston sleeve 14. The piston 10 and the piston sleeve 14, the piston 10 and the mandrel 20 are sealed by a graphite sealing ring 15 and a graphite sealing ring 16, the lower joint 19 and the piston sleeve 14 and the mandrel 20 are respectively connected by threads, a metal sealing ring 18 is used for sealing between the lower joint 19 and the piston sleeve 14, and a graphite sealing ring 17 is used for sealing between the piston sleeve 14 and the mandrel 20. The metal sealing ring 18 and the metal sealing ring 3 are made of copper and are extruded to deform for sealing when the seat sealing is pressed. The graphite sealing ring 2 and the metal sealing ring 3 are mutually matched to finish upper sealing, the graphite sealing ring 17 and the metal sealing ring 18 are mutually matched to finish lower sealing, and finally double combined sealing is realized.
The utility model discloses the theory of operation of isolating packer does: after the isolation packer with the novel sealing structure reaches a preset position, positive pressure is generated in a drill rod, a piston 10 is pushed by pressure, the shearing operation of shearing a pin 13 with a piston sleeve 14 is completed, a lock ring 11, a positioning pin 12 and a lower gauge ring 9 move upwards, the lower gauge ring 9 extrudes a sealing combined piece, two copper rings 5 oppositely extrude a rubber cylinder I6, a rubber cylinder I6 extrudes a spacer ring 8, the spacer ring 8 extrudes a rubber cylinder I7, the rubber cylinder I6 and the rubber cylinder II7 are compressed and expanded, the rubber cylinder I6 and the rubber cylinder II7 climb and compress outwards along the angle of the side face of the spacer ring, and finally the setting of the packer is completed. Because the internal thread tooth shape of the locking ring 11 is straight downward and the inclined surface is upward, the locking ring 11 can be kept in the original position and not move downward after the pressure in the drill rod is relieved, and the successful setting of the packer is ensured.
Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above specific functions and operations, and the above specific embodiments are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the protection scope of the present invention.
Claims (5)
1. The utility model provides an keep apart packer device that is used for novel seal structure of viscous crude thermal recovery well which characterized in that: the isolation packer device comprises a packer body;
the packer body comprises a mandrel;
an upper joint, an upper gauge ring, a sealing assembly, a lower gauge ring, a hydraulic assembly and a lower joint are sequentially sleeved outside the mandrel from top to bottom;
the upper joint is respectively connected with the mandrel and the upper gauge ring, the upper joint and the mandrel are sealed through a graphite sealing ring, and the upper joint and the upper gauge ring are sealed through a metal sealing ring;
the lower joint is respectively connected with the mandrel and a piston sleeve in the hydraulic assembly, and the lower joint and the piston sleeve are sealed through a metal sealing ring; the lower connector is connected with the mandrel through threads.
2. The isolation packer apparatus of claim 1, wherein: the sealing assembly comprises two copper rings and three rubber cylinders arranged between the two copper rings;
a spacing ring is arranged between two adjacent rubber cylinders;
the copper ring and the rubber cylinder as well as the spacing ring and the rubber cylinder are matched in a fitting manner.
3. The isolation packer apparatus of claim 2, wherein: the section of the spacer ring along the axial direction of the mandrel is trapezoidal.
4. An isolation packer apparatus as claimed in any one of claims 1 to 3, wherein: and the piston in the hydraulic assembly, the piston sleeve and the mandrel are sealed by the graphite sealing ring.
5. An isolation packer apparatus as claimed in any one of claims 1 to 3, wherein: the piston sleeve and the mandrel are sealed through the graphite sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920572197.4U CN209908454U (en) | 2019-04-24 | 2019-04-24 | Isolation packer device of novel sealing structure for thickened oil thermal production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920572197.4U CN209908454U (en) | 2019-04-24 | 2019-04-24 | Isolation packer device of novel sealing structure for thickened oil thermal production well |
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| Publication Number | Publication Date |
|---|---|
| CN209908454U true CN209908454U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920572197.4U Active CN209908454U (en) | 2019-04-24 | 2019-04-24 | Isolation packer device of novel sealing structure for thickened oil thermal production well |
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| CN (1) | CN209908454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117846534A (en) * | 2024-03-07 | 2024-04-09 | 中国石油大学(华东) | High-temperature-resistant heat-insulation packer for thickened oil heat |
-
2019
- 2019-04-24 CN CN201920572197.4U patent/CN209908454U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117846534A (en) * | 2024-03-07 | 2024-04-09 | 中国石油大学(华东) | High-temperature-resistant heat-insulation packer for thickened oil heat |
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