CN111322030B - High temperature high pressure is with recoverable packing element anti-protruding mechanism - Google Patents
High temperature high pressure is with recoverable packing element anti-protruding mechanism Download PDFInfo
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- CN111322030B CN111322030B CN202010225829.7A CN202010225829A CN111322030B CN 111322030 B CN111322030 B CN 111322030B CN 202010225829 A CN202010225829 A CN 202010225829A CN 111322030 B CN111322030 B CN 111322030B
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- supporting block
- torsion spring
- spiral torsion
- sides
- limiting
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- 238000012856 packing Methods 0.000 title claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000009172 bursting Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 10
- 238000007789 sealing Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000002265 prevention Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Abstract
The invention discloses a recyclable rubber cylinder anti-bursting mechanism for high temperature and high pressure, which comprises a supporting block and a limiting supporting block which are sequentially hinged at intervals and form a circular ring, wherein the supporting block and the limiting supporting blocks on two sides of the supporting block are hinged through guide rods which are jointly penetrated, a left-handed cylindrical spiral torsion spring and a right-handed cylindrical spiral torsion spring are respectively sleeved on the guide rods on two sides of the supporting block, one end torsion arm of the left-handed cylindrical spiral torsion spring and one end torsion arm of the right-handed cylindrical spiral torsion spring are positioned in the supporting block, the other end torsion arm of the left-handed cylindrical spiral torsion spring and the right-handed cylindrical spiral torsion spring are positioned in the limiting supporting blocks on two sides of the supporting block, and the left-handed cylindrical spiral torsion spring and the right-handed cylindrical spiral torsion spring are sequentially distributed at intervals on the circular ring. The invention discloses a high-temperature high-pressure recyclable rubber sleeve anti-bursting mechanism, which can realize outer diameter shrinkage and expansion, solves the problem of bursting and puncture leakage of a recyclable rubber sleeve in the prior art when the recyclable rubber sleeve is sealed at high temperature and high pressure, and improves the working pressure of a recyclable packer.
Description
Technical Field
The invention belongs to the technical field of underground petroleum and natural gas testing tools, and relates to a recyclable rubber sleeve anti-bursting mechanism for high temperature and high pressure.
Background
The anti-bursting mechanism of the rubber cylinder is a key for improving the sealing performance of the rubber cylinder, and the sealing anti-bursting mechanism of the high-temperature and high-pressure rubber cylinder at present mainly has three forms: a bowl-shaped metal ring combination, a spring structure and a metal wire mesh structure are added on the shoulder part of the end face rubber cylinder;
the bowl-shaped metal ring combination mechanism has reliable anti-bursting effect on the rubber cylinder, but can not be recovered after the outer diameter of the metal ring is expanded, so the bowl-shaped metal ring combination mechanism can only be used in the non-recoverable rubber cylinder and is mainly used on the permanent packer;
The shoulder part of the end face rubber cylinder is provided with a spring structure, so that the rubber cylinder is used for a recyclable rubber cylinder, is commonly applied in 70MPa, is limited by the strength of the spring, improves the pressure level and has unstable performance;
The metal wire mesh structure is limited by the strength of the metal wire mesh, in practical application, the performance of the metal wire mesh structure is unstable when sealed at high pressure, and the metal wire mesh structure cannot be recovered after the compression and expansion outer diameter of the metal wire mesh structure is enlarged, so that hidden danger of difficult unsealing exists in the recoverable packer;
At present, the recyclable packer is limited by sealing pressure of a rubber cylinder, so that the high-temperature high-pressure well test fracturing operation is difficult to meet, and a recyclable rubber cylinder outburst prevention mechanism is urgently needed to improve sealing performance of the rubber cylinder in the recyclable packer.
Disclosure of Invention
The invention aims to provide a recyclable rubber sleeve anti-bursting mechanism for high temperature and high pressure, which can realize outer diameter shrinkage and expansion, solve the problems of bursting and puncture leakage of a recyclable rubber sleeve in the prior art during high temperature and high pressure sealing, and improve the working pressure of a recyclable packer.
The technical scheme includes that the recyclable rubber cylinder anti-bursting mechanism for high temperature and high pressure comprises a supporting block and a limiting supporting block which are sequentially hinged at intervals and form a circular ring, wherein the supporting block and the limiting supporting blocks on two sides of the supporting block are hinged through guide rods which are jointly penetrated, a left-handed cylindrical spiral torsion spring and a right-handed cylindrical spiral torsion spring are respectively sleeved on the guide rods on two sides of the supporting block, one ends of the left-handed cylindrical spiral torsion spring and the right-handed cylindrical spiral torsion spring are positioned in the supporting block, the other ends of the left-handed cylindrical spiral torsion spring and the right-handed cylindrical spiral torsion spring are positioned in the limiting supporting blocks on two sides of the supporting block, and the left-handed cylindrical spiral torsion spring and the right-handed cylindrical spiral torsion spring are sequentially distributed on the circular ring at intervals.
The present invention is also characterized in that,
The both sides of supporting shoe and spacing supporting shoe all set up to the step form, and the step of supporting shoe and spacing supporting shoe both sides cooperatees, has all seted up the hinge hole on the step of supporting shoe and spacing supporting shoe both sides, and the hinge hole of supporting shoe both sides and the hinge hole corresponding setting of the spacing supporting shoe in both sides articulated with it, and the guide arm is articulated supporting shoe and spacing supporting shoe through wearing to establish in the hinge hole that corresponds at supporting shoe and spacing supporting shoe.
A spring mounting groove is formed in each of the supporting block and the limiting supporting block, the spring mounting grooves in the supporting block and the limiting supporting block are located on the same side in the circumferential direction, the left-handed cylindrical spiral torsion springs are mounted in the spring mounting grooves of the supporting block, and the right-handed cylindrical spiral torsion springs are mounted in the spring mounting grooves of the limiting supporting block.
The spring mounting grooves are respectively arranged on the end faces of the same side of the supporting blocks and the limiting supporting blocks, which are clockwise in the circumferential direction.
One end of the guide rod, which is positioned outside the circular ring formed by the supporting block and the limiting supporting block, is also fixed with a screw.
The positions of the support blocks and the limiting support blocks, which correspond to the torsion arms at the two ends of the left-handed cylindrical helical torsion spring or the right-handed cylindrical helical torsion spring, are provided with elongated holes, and the torsion arms at the two ends of the left-handed cylindrical helical torsion spring or the right-handed cylindrical helical torsion spring respectively extend into the corresponding elongated holes.
The beneficial effects of the invention are as follows:
According to the recyclable rubber cylinder outburst prevention mechanism for high temperature and high pressure, when the initial assembly of the outburst prevention mechanism is completed, the outburst prevention mechanism is kept in a contracted state with smaller outer diameter under the matched use of the left-handed torsion spring and the right-handed torsion spring, and the outer diameter requirement of a packer during the well descending is met; when in setting, axial compression force is applied, the anti-bursting mechanism is expanded into a plane shape along with the increase of the axial compression force, the outer diameter is increased to be a full-circle structure, the anti-bursting mechanism is contacted with the inner wall of the sleeve, the radial gap between the diameter gauge and the sleeve is completely filled, the anti-bursting function is realized on the sealing of the rubber cylinder, the rubber cylinder is prevented from bursting and puncturing from the annular gap between the diameter gauge and the sleeve under high temperature and high pressure, and the sealing performance of the rubber cylinder is improved; after the axial compression force is removed during deblocking, the anti-burst mechanism is restored to a contracted state with smaller outer diameter under the action of the torsion spring force, so that the requirement of deblocking of the recyclable packer is met, the problems in the prior art are solved, and the high-strength anti-burst packer can bear high strength.
Drawings
FIG. 1 is a front view of a high temperature and high pressure recyclable glue cartridge anti-pop mechanism of the present invention;
FIG. 2 is a schematic structural view of a high temperature and high pressure recyclable packing element anti-pop mechanism of the present invention with a left-hand cylindrical helical torsion spring and a right-hand cylindrical helical torsion spring;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a perspective view of FIG. 3;
FIG. 6 is a schematic drawing of a structure of the invention with a high temperature and high pressure with a recoverable rubber sleeve anti-protruding mechanism being spread into a plane;
FIG. 7 is an expanded view of a recyclable packing element anti-burst mechanism for high temperature and high pressure according to the present invention;
FIG. 8 is a cross-sectional view of FIG. 7;
FIG. 9 is a schematic view of the distracted planar structure of FIG. 8;
FIG. 10 is a schematic view of the structure of a right-handed cylindrical helical torsion spring in the anti-pop mechanism of the recyclable packing element for high temperature and high pressure;
FIG. 11 is a schematic structural view of a left-hand cylindrical helical torsion spring in a high-temperature and high-pressure recyclable packing element anti-bursting mechanism.
In the figure, the support block 1, the limit support block 2, the left-handed cylindrical spiral torsion spring 3, the right-handed cylindrical spiral torsion spring 4, the screw 5, the guide rod 6, the hinge hole 7, the spring mounting groove 8 and the elongated hole 9.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention relates to a recyclable rubber sleeve anti-bursting mechanism for high temperature and high pressure, which has a structure shown in figures 1-5 and comprises a supporting block 1 and a limiting supporting block 2 which are sequentially hinged at intervals and form a circular ring, wherein the supporting block 1 and the limiting supporting blocks 2 on two sides of the supporting block are hinged through guide rods 6 which are jointly penetrated, as shown in figures 10-11, a left-handed cylindrical helical torsion spring 3 and a right-handed cylindrical helical torsion spring 4 are respectively sleeved on the guide rods 6 on two sides of the supporting block 1, one ends of the left-handed cylindrical helical torsion spring 3 and the right-handed cylindrical helical torsion spring 4 are positioned in the supporting block 1, the other ends of the left-handed cylindrical helical torsion spring 3 and the right-handed cylindrical helical torsion spring 4 are sequentially distributed at intervals on the circular ring.
The both sides of supporting shoe 1 and spacing supporting shoe 2 all set up to the step form, and the step of supporting shoe 1 and spacing supporting shoe 2 both sides cooperatees, has all seted up hinge hole 7 on the step of supporting shoe 1 and spacing supporting shoe 2 both sides, and hinge hole 7 and the corresponding setting of hinge hole 7 of the articulated both sides spacing supporting shoe 2 with it of supporting shoe 1 both sides, and guide arm 6 articulates supporting shoe 1 and spacing supporting shoe 2 through wearing to establish in hinge hole 7 that corresponds at supporting shoe 1 and spacing supporting shoe 2, and hinge hole 7 is radial hole.
A spring mounting groove 8 is formed in each of the supporting block 1 and the limiting supporting block 2, the spring mounting grooves 8 in the supporting block 1 and the limiting supporting block 2 are located on the same side in the circumferential direction, the left-handed cylindrical spiral torsion spring 3 is mounted in the spring mounting groove 8 of the supporting block 1, and the right-handed cylindrical spiral torsion spring 4 is mounted in the spring mounting groove 8 of the limiting supporting block 2.
The spring mounting grooves 8 are respectively arranged on the end surfaces of the supporting block 1 and the limiting supporting block 2, which are positioned on one side clockwise in the circumferential direction.
One end of the guide rod 6, which is positioned outside the circular ring formed by the supporting block 1 and the limiting supporting block 2, is also fixed with a screw 5.
The positions of the support block 1 and the limit support block 2 corresponding to the torsion arms at the two ends of the left-handed cylindrical helical torsion spring 3 or the right-handed cylindrical helical torsion spring 4 are provided with elongated holes 9, and the torsion arms at the two ends of the left-handed cylindrical helical torsion spring 3 or the right-handed cylindrical helical torsion spring 4 respectively extend into the corresponding elongated holes 9.
The invention relates to an assembling process of a recyclable rubber cylinder anti-bursting mechanism for high temperature and high pressure, which comprises the following steps:
Taking the case that the left-handed cylindrical spiral torsion spring 3 is arranged in the spring mounting groove 8 of the supporting block 1, and the right-handed cylindrical spiral torsion spring 4 is arranged in the spring mounting groove 8 of the limiting supporting block 2 as an example:
As shown in fig. 3, the torsion arm of the left-hand cylindrical spiral torsion spring 3 is installed in the elongated hole 9 of the supporting block 1, the other torsion arm of the left-hand cylindrical spiral torsion spring 3 is installed in the elongated hole 9 of the limiting supporting block 2, the guide rod 6 penetrates through the hinge hole 7 at the lower end of the supporting block 1, the guide rod 6 penetrates through the left-hand cylindrical spiral torsion spring 3 and the hinge hole 7 of the limiting supporting block 2, then the screw 5 is screwed into the upper end of the guide rod 6, the torsion arm of the right-hand cylindrical spiral torsion spring 4 is installed in the elongated hole 9 of the limiting supporting block 2, the other torsion arm of the right-hand cylindrical spiral torsion spring 4 is installed in the elongated hole 9 of the next supporting block 1, the guide rod 6 penetrates through the hinge hole 7 at the lower end of the limiting supporting block 2, the guide rod 6 penetrates through the right-hand cylindrical spiral torsion spring 4, penetrates through the limiting block 1 and is screwed into the screw 5 at the upper end of the guide rod 6, and the whole circle of the high-temperature high-pressure recyclable glue barrel anti-protruding mechanism is assembled by analogy, as shown in fig. 1-6.
The design size of the outer diameter of the circular ring formed after the supporting block 1 and the limiting supporting block 2 are unfolded is selected to be close to the inner diameter of the sleeve;
As shown in fig. 5 and 7-8, when the assembly is completed, under the action of the left-handed cylindrical spiral torsion spring 3, the supporting block 1 and the limiting supporting block 2 are kept in a '﹀' shape, under the action of the right-handed cylindrical spiral torsion spring 4, the supporting block 1 and the limiting supporting block 2 are kept in a '︿' shape, and are sequentially arranged for a whole circle, and at the moment, the recyclable rubber tube anti-protruding mechanism is kept at a smaller outer diameter And in a contracted state, the outer diameter requirement of the packer during well descending is met.
When the packer is set, axial compression force is applied to the end face of the anti-burst mechanism of the recyclable rubber cylinder to enable the anti-burst mechanism to be in a burst stateThe rubber sleeve is spread into a plane, as shown in fig. 6 and 9, the outer diameter is increased to be in a full-circle structure, the full-circle structure is contacted with the inner wall of the sleeve, the annular radial gap between the drift diameter gauge and the sleeve is completely filled, the rubber sleeve is prevented from protruding and puncturing from the annular gap between the drift diameter gauge and the sleeve under high temperature and high pressure, and the sealing performance of the rubber sleeve is improved, wherein the left-handed cylindrical helical torsion spring 3 and the right-handed cylindrical helical torsion spring 4 are twisted along with the process of pressing the anti-bursting mechanism into the plane; as shown in fig. 1, the whole side of the anti-protruding mechanism without the spring mounting groove 8 faces the rubber cylinder;
During deblocking, the packer is lifted up, axial compression force is removed, and the recyclable rubber cylinder anti-bursting mechanism is restored to a smaller outer diameter under the action of the left-handed cylindrical helical torsion spring 3 and the right-handed cylindrical helical torsion spring 4 And in a form shrinkage state, the deblocking requirement of the recyclable packer is met.
Claims (4)
1. The utility model provides a recoverable packing element anti-protruding mechanism for high temperature high pressure, its characterized in that includes supporting shoe (1) and spacing supporting shoe (2) that the interval is articulated in proper order and forms the ring, supporting shoe (1) and spacing supporting shoe (2) of its both sides are articulated through wearing guide arm (6) jointly, cover left-hand cylinder spiral torsion spring (3) and right-hand cylinder spiral torsion spring (4) on guide arm (6) of supporting shoe (1) both sides respectively, one end of left-hand cylinder spiral torsion spring (3) and right-hand cylinder spiral torsion spring (4) is located in supporting shoe (1), the other end is located in spacing supporting shoe (2) of supporting shoe (1) both sides, left-hand cylinder spiral torsion spring (3) and right-hand cylinder spiral torsion spring (4) interval distribution in proper order on the ring;
The two sides of the supporting block (1) and the two sides of the limiting supporting block (2) are respectively provided with a step shape, the steps at the two sides of the supporting block (1) and the two sides of the limiting supporting block (2) are matched, the steps at the two sides of the supporting block (1) and the two sides of the limiting supporting block (2) are respectively provided with a hinge hole (7), the hinge holes (7) at the two sides of the supporting block (1) and the hinge holes (7) of the two sides of the limiting supporting block (2) hinged with the hinge holes, and the guide rod (6) is used for hinging the supporting block (1) with the limiting supporting block (2) through penetrating the hinge holes (7) corresponding to the supporting block (1) and the limiting supporting block (2);
The support block (1) and the limiting support block (2) are internally provided with elongated holes (9) at positions corresponding to torsion arms at two ends of the left-handed cylindrical spiral torsion spring (3) and the right-handed cylindrical spiral torsion spring (4), and the torsion arms at two ends of the left-handed cylindrical spiral torsion spring (3) or the right-handed cylindrical spiral torsion spring (4) respectively extend into the corresponding elongated holes (9).
2. The recyclable glue barrel anti-protruding mechanism for high temperature and high pressure according to claim 1, wherein a spring installation groove (8) is formed in each of the supporting block (1) and the limiting supporting block (2), the spring installation grooves (8) in the supporting block (1) and the limiting supporting block (2) are located on the same side in the circumferential direction, the left-handed cylindrical spiral torsion spring (3) is installed in the spring installation groove (8) of the supporting block (1), and the right-handed cylindrical spiral torsion spring (4) is installed in the spring installation groove (8) of the limiting supporting block (2).
3. The recyclable glue cylinder anti-protruding mechanism for high temperature and high pressure according to claim 2, wherein the spring mounting grooves (8) are respectively arranged on the end surfaces of the supporting block (1) and the limiting supporting block (2) which are positioned on one side clockwise in the circumferential direction.
4. The recyclable glue cylinder anti-protruding mechanism for high temperature and high pressure according to claim 1, wherein the guide rod (6) is positioned at one end of the outer side of the circular ring formed by the supporting block (1) and the limiting supporting block (2) and is also fixedly provided with a screw (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010225829.7A CN111322030B (en) | 2020-03-26 | High temperature high pressure is with recoverable packing element anti-protruding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010225829.7A CN111322030B (en) | 2020-03-26 | High temperature high pressure is with recoverable packing element anti-protruding mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111322030A CN111322030A (en) | 2020-06-23 |
| CN111322030B true CN111322030B (en) | 2024-07-12 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212003111U (en) * | 2020-03-26 | 2020-11-24 | 宝鸡市元亨石油设备有限责任公司 | Recoverable rubber sleeve outburst prevention mechanism |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212003111U (en) * | 2020-03-26 | 2020-11-24 | 宝鸡市元亨石油设备有限责任公司 | Recoverable rubber sleeve outburst prevention mechanism |
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