CN106894784A - HTHP packer and heat resisting and pressure resisting packing element - Google Patents
HTHP packer and heat resisting and pressure resisting packing element Download PDFInfo
- Publication number
- CN106894784A CN106894784A CN201710129971.XA CN201710129971A CN106894784A CN 106894784 A CN106894784 A CN 106894784A CN 201710129971 A CN201710129971 A CN 201710129971A CN 106894784 A CN106894784 A CN 106894784A
- Authority
- CN
- China
- Prior art keywords
- spacer ring
- pressure
- piston
- resistant
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012856 packing Methods 0.000 title abstract description 9
- 229920001971 elastomer Polymers 0.000 claims abstract description 118
- 125000006850 spacer group Chemical group 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 9
- 230000004323 axial length Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 22
- 238000012360 testing method Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a kind of HTHP packer and heat resisting and pressure resisting packing element; wherein; heat resisting and pressure resisting packing element is made up of upper rubber assembly, cartridge and lower rubber assembly; rubber assembly and lower rubber assembly make steel wire be coated on packing element and spacer ring surface by injecting glue in mould thereon; enhance packing element intensity and hardness in itself; improve its anti-shoulder effect and bearing capacity under the high temperature conditions; packing element is prevented along packer and casing annulus evagination; the cartridge of centre is effectively protected, packer bearing capacity at high temperature is improve；Coordinate the structure of HTHP packer, make to set process simply, it is easy to operate, and finally realize reliable sealing.
Description
Technical Field
The invention relates to the technical field of packers, in particular to a high-temperature and high-pressure packer and a temperature-resistant and pressure-resistant rubber barrel.
Background
With the continuous deepening of exploration and development, global oil and gas exploration and development objects are switched from conventional oil and gas reservoirs to unconventional oil and gas reservoirs, a target layer rapidly extends from a middle shallow layer to a deep layer and an ultra-deep layer, and how to realize oil and gas breakthrough of a new region, a new field and a new layer, especially a deep layer, and find and expand the oil and gas range and field of an oil field becomes a main means for smoothly realizing the target of replacing China oil resources. In recent years, the oil and gas resource replacing capability of western regions in China is gradually enhanced, a new pattern that the western regions replace the eastern regions is expected to be formed by 2030, main replacing regions are distributed in Tarim, quasi-Solarless, Tuhaha basin and Qinghai Cheddar basin and Sichuan basin in Xinjiang, the burial depth of most of oil and gas resources is below 5000 meters, and deep oil and gas resource development becomes the most important strategic reality field for leading future oil and gas exploration and development of China's petroleum.
The deep oil gas resource development has the characteristics of complex and variable reservoir structural stress, generally low natural productivity, high temperature, high construction pressure and the like, the fracturing construction difficulty is higher and higher, and the requirement on the performance of the packer is higher and higher.
At present, the rubber cylinder of the packer mainly adopts materials such as nitrile rubber, hydrogenated nitrile rubber, fluororubber and the like, the strength and hardness of the rubber cylinder are reduced along with the continuous rise of temperature, the temperature resistance of the rubber cylinder is closely related to the selected materials, and the pressure resistance is mainly related to a reasonable structure. Under the condition of high temperature and high pressure, the shoulder part of the rubber sleeve is easy to protrude and increase and even break, so that the pressure resistance of the packer is reduced, the service life is shortened, and even the sealing fails.
Disclosure of Invention
The invention aims to provide a temperature-resistant pressure-resistant rubber cylinder which can prevent the rubber cylinder from protruding outwards along the annular space between a packer and a casing under the conditions of high temperature and high pressure.
Another object of the present invention is to provide a high temperature and high pressure packer capable of achieving reliable sealing.
Therefore, the technical scheme of the invention is as follows:
a high-temperature high-pressure packer comprises an upper rubber component, a sealing rubber cylinder and a lower rubber component which are sequentially sleeved on the outer side of a central pipe from top to bottom; wherein,
the upper rubber component comprises an upper outer spacer ring, an upper inner spacer ring, a rubber cylinder, a lower inner spacer ring and a lower outer spacer ring which are sequentially sleeved from top to bottom; the upper inner spacer ring is in press fit with the top surface of the rubber cylinder, and the lower inner spacer ring abuts against the bottom surface of the rubber cylinder; the outer walls of the upper inner spacer ring and the lower inner spacer ring are both inwards recessed to form an arc-shaped concave surface with the outer diameter gradually increasing from top to bottom, and the inner walls of the upper outer spacer ring and the lower outer spacer ring are both processed into arc-shaped convex surfaces which are respectively matched with the outer walls of the upper inner spacer ring and the lower inner spacer ring; the steel wire mesh is covered and fixed on the outer wall of the rubber cylinder, and the upper end and the lower end of the steel wire mesh are respectively arranged and fixed between the upper inner spacer ring and the upper outer spacer ring and between the lower inner spacer ring and the lower outer spacer ring;
the lower rubber component and the upper rubber component have the same structure.
By optimizing the structure of the temperature-resistant and pressure-resistant rubber cylinder and utilizing the high-performance tensile strength of the metal sheath net on the end rubber cylinder, the weakness that the tensile strength of the rubber body is reduced when the rubber body is softened at a high temperature is compensated, and the rubber body is protected from being extruded at a high pressure.
Further, the width of the steel wire mesh is larger than the sum of the widths of the upper inner partition ring, the lower inner partition ring and the rubber cylinder, so that the steel wire mesh is completely covered on the outer side wall surfaces of the upper inner partition ring, the lower inner partition ring and the rubber cylinder.
Specifically, the steel wire mesh is integrally vulcanized and formed with the outer wall of the upper inner spacer ring, the outer wall of the lower inner spacer ring, the outer wall of the rubber tube, the inner wall of the upper outer spacer ring and the inner wall of the lower outer spacer ring.
Further, the axial length ratio of the upper rubber component to the sealing rubber cylinder to the lower rubber component is 6:5: 6.
By changing the structure of the temperature-resistant and pressure-resistant rubber sleeve and the traditional manufacturing process, the metal sheath net is wrapped on the outer periphery of the rubber sleeve to serve as an end protection rubber sleeve, a sealing rubber sleeve is arranged in the middle of the end rubber sleeve, the end rubber sleeve with the metal sheath net is used for protecting the sealing rubber sleeve, and the sealing rubber sleeve is controlled to protrude outwards when bearing high pressure under the high-temperature condition, so that the packer is guaranteed to bear high pressure difference in a high-temperature well.
A high-temperature and high-pressure packer formed by the temperature-resistant and pressure-resistant rubber cylinder comprises an upper joint, a temperature-resistant and pressure-resistant rubber cylinder, an upper piston, a locking ring, a lower piston and a lower joint which are sequentially sleeved on the outer side of a central pipe from top to bottom; wherein,
the upper joint and the lower joint are fixed at the top end and the bottom end of the central pipe;
the temperature-resistant and pressure-resistant rubber cylinder is abutted against the bottom surface of the upper joint;
the upper piston and the lower piston are arranged at intervals; the locking ring is arranged and fixed on the inner side of the upper piston, and a one-way stepping thread which can be matched with the locking ring is processed on the outer wall of the central tube and above the locking ring; a cylinder sleeve is sleeved and fixed on the outer sides of the upper piston and the lower piston, so that an annular space is defined among the central pipe, the cylinder sleeve, the upper piston and the lower piston;
two liquid circulation holes are formed in the side wall of the central tube along the circumferential direction, so that the inner cavity of the central tube is communicated with the annular space through the liquid circulation holes;
four shear pins are arranged on the outer wall of the lower side of the cylinder sleeve along the circumferential direction, and the cylinder sleeve is fixed on the lower piston; four set screws are arranged on the outer wall of the lower side of the lower piston along the circumferential direction, and the lower piston is fixed on the lower joint.
Further, two sealing rings are arranged between the upper joint and the central pipe and between the lower joint and the central pipe.
Further, double sealing rings are respectively arranged between the upper piston and the central pipe and between the cylinder sleeve and the lower piston; and a sealing ring is respectively arranged between the upper piston and the cylinder sleeve and between the lower piston and the central pipe.
Compared with the prior art, the temperature-resistant and pressure-resistant rubber cylinder comprises an upper rubber component, a sealing rubber cylinder and a lower rubber component, wherein the upper rubber component and the lower rubber component are filled with glue into a mold to enable a steel wire mesh to be coated on the surfaces of the rubber cylinder and a spacer ring, so that the strength and hardness of the rubber cylinder are enhanced, the anti-shoulder-protrusion effect and the pressure-bearing capacity of the rubber cylinder under a high-temperature condition are improved, the rubber cylinder is prevented from protruding outwards along the annular space of a packer and a sleeve, the sealing rubber cylinder in the middle is effectively protected, and the pressure-bearing capacity of the packer under a high temperature is; the structure of the high-temperature high-pressure packer is matched, so that the setting process is simple, the operation is easy, and the reliable sealing is finally realized.
Drawings
FIG. 1 is a schematic structural view of a high temperature and high pressure packer of the present invention;
FIG. 2 is a schematic structural view of a rubber component of the high temperature and high pressure packer of the present invention;
FIG. 3 is a schematic structural view of the compression testing experimental apparatus for the rubber component of the high-temperature high-pressure packer of the present invention
FIG. 4 is a construction curve of the construction process of embodiment 2 of the present invention;
fig. 5 is a construction curve of the construction process of embodiment 3 of the present invention.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, which are not intended to limit the invention in any way.
Example 1
As shown in figure 1, the high-temperature and high-pressure packer comprises a central pipe 9, an upper joint 1, a temperature-resistant and pressure-resistant rubber cylinder, an upper piston 5, a locking ring 14, a lower piston 7 and a lower joint 10, wherein the upper joint 1, the temperature-resistant and pressure-resistant rubber cylinder, the locking ring 14, the lower piston 7 and the lower joint are sequentially sleeved on the outer side of the central pipe 9.
The upper joint 1 and the lower joint 10 are in threaded connection with the top end and the bottom end of the central pipe 9, and double-channel sealing rings are arranged between the upper joint 1 and the central pipe 9 and between the lower joint 10 and the central pipe 9.
The temperature-resistant and pressure-resistant rubber cylinder comprises an upper rubber component 2, a sealing rubber cylinder 3 and a lower rubber component 4 which are sequentially sleeved on the outer side of the central pipe 9 from top to bottom.
As shown in fig. 2, the upper rubber component 2 includes an upper inner spacer 201, an upper outer spacer 202, a rubber cylinder 204, a lower inner spacer 205 and a lower outer spacer 206, which are sequentially sleeved from top to bottom; specifically, the upper inner spacer 201 is press-fitted on the top surface of the rubber cylinder 204, and the lower inner spacer 205 abuts on the bottom surface of the rubber cylinder 204; the outer walls of the upper inner spacer 201 and the lower inner spacer 205 are both recessed inwards to form an arc concave surface with the outer diameter gradually increasing from top to bottom, and the inner walls of the upper outer spacer 202 and the lower outer spacer 206 are both processed into arc convex surfaces which are respectively matched with the outer walls of the upper inner spacer 201 and the lower inner spacer 205; the steel wire mesh 203 is coated and fixed on the outer wall of the rubber tube 204 by injecting glue into the mold, the width of the steel wire mesh 203 is adapted to the sum of the widths of the upper inner partition ring 201, the lower inner partition ring 205 and the rubber tube 204, the upper end and the lower end of the steel wire mesh 203 are respectively arranged between the upper inner partition ring 201 and the upper outer partition ring 202 and between the lower inner partition ring 205 and the lower outer partition ring 206, and all parts of the upper rubber component 2 are fixed together by injecting rubber into the mold cavity and vulcanizing and forming method.
Wherein, the outer diameter of the upper rubber component 2 is consistent with the outer diameter of the sealing rubber cylinder 3; the height ratio of the upper rubber component 2 to the sealing rubber cylinder 3 is 6: 5; the lower rubber component 4 and the upper rubber component 2 have the same size and structure; specifically, the total axial length of the temperature-resistant and pressure-resistant rubber cylinder is 170mm, wherein the axial lengths of the upper rubber component 2 and the lower rubber component 4 are 60mm, and the axial length of the sealing rubber cylinder 3 is 50 mm;
the upper piston 5 abuts against the bottom surface of the lower rubber component 4, the outer wall of the top end of the upper piston protrudes outwards to form a first annular step, and the inner wall of the bottom of the upper piston is recessed inwards to form a second annular step; the locking ring 14 is arranged on the inner side of the upper piston 5 and fixed at a second annular step, and a one-way step-by-step thread which can be matched with the locking ring 14 is processed on the outer wall of the central tube 9 and above the locking ring 14, so that the locking ring 14 can only move upwards relative to the one-way step-by-step thread of the central tube 9;
the upper inner wall and the lower inner wall of the upper outer wall of the lower piston 7 are respectively recessed inwards to form a third annular step and a fourth annular step, so that the lower joint 10 is sleeved on the inner side of the lower piston 7, and the top end of the lower joint 10 abuts against the lower end face of the fourth annular step; four set screws 12 are arranged on the outer wall of the lower side of the lower piston 7 along the circumferential direction, and the lower piston 7 is fixed on the lower joint 10;
the cylinder sleeve 6 is sleeved outside the upper piston 5 and the lower piston 7; one end of the cylinder sleeve 7 abuts against the lower end face of the first annular step of the upper piston 5, and the other end of the cylinder sleeve is press-fitted on the upper end face of the third annular step of the lower piston 7, so that the upper piston 5 and the lower piston 7 are arranged at intervals, and the cylinder sleeve 6, the upper piston 5 and the lower piston 7 which are arranged outside the central tube 9 are surrounded to form an annular space 13;
two liquid circulation holes 11 are formed in the side wall of the central tube 9 along the circumferential direction, so that the inner cavity of the central tube 9 is communicated with the annular space 13 through the liquid circulation holes 11;
four shear pins 8 are arranged on the outer wall of the lower side of the cylinder sleeve 6 along the circumferential direction, and the cylinder sleeve 6 is fixed on the lower piston 7;
in order to ensure the sealing performance of the packer device, double sealing rings are respectively arranged between the upper piston 5 and the central pipe 9 and between the cylinder sleeve 6 and the lower piston 7; and a sealing ring is respectively arranged between the upper piston 5 and the cylinder sleeve 6 and between the lower piston 7 and the central pipe 9.
When the fracturing device is used, the fracturing string connected with the high-temperature high-pressure packer is lowered to a specified fracturing position, and specifically, a ball throwing sliding sleeve is connected below the high-temperature high-pressure packer; when fracturing construction is carried out, after a ball is thrown through an oil pipe to a ball throwing sliding sleeve below a high-temperature high-pressure packer, the pressure in the pipe column is suppressed to a specified pressure, a pin 8 is cut off, liquid in the pipe column flows into an annular space 13, and an upper piston 5 is pushed to move upwards under the hydraulic action to compress a temperature-resistant pressure-resistant rubber cylinder consisting of a lower rubber component 4, a sealing rubber cylinder 3 and an upper rubber component 2; meanwhile, the cylinder sleeve 6 and the locking ring 14 move upwards along with the upper piston 5, the locking ring 14 and the one-way stepping type threads on the outer wall of the central pipe 9 complete locking so as to keep continuous setting force, and the pressure is continuously suppressed to the rated setting pressure, so that the setting of the packer can be completed.
Wherein, lower rubber component 4 and last rubber component 2 in the withstand voltage packing element of temperature resistant play the guard action to sealed packing element 3: when the lower layer is fractured, the lower rubber component 4 plays a role in primary sealing and preventing the rubber cylinder from protruding outwards along the annular space between the packer and the casing pipe, protects the sealing rubber cylinder 3 and realizes reliable sealing; when fracturing the upper layer, go up rubber component 2 and play the effect of just sealing and preventing the packing element along packer and sleeve pipe annular space evagination, protection sealing rubber tube 3 realizes reliable sealed.
And (3) performance testing:
1) laboratory experiments:
after the packer is assembled, connecting a ball seat at a lower joint, and putting the ball seat into a pressure testing cylinder; pressurizing from the central pipe to the starting pressure of the packer after the ball is thrown, shearing the pin, continuously pressurizing to the setting pressure, stabilizing the pressure for 10min, completing the setting of the packer, and continuously pressurizing and throwing the pin of the tee; the pressure testing cylinder is placed into the heating device for heating, and then the pressure is pressurized for carrying out a pressure-bearing experiment.
The experimental conditions are as follows: the temperature is 200 ℃, the pressure is 100MPa, and the heating time is 180 min.
Through the test: the packer has good sealing condition under the experimental conditions, the rubber cylinder is not broken after the experiment, the outburst prevention effect is prominent, and the packer has good high temperature resistance and compression resistance.
And (3) field construction:
example 2 (jockey 1 well):
the gas testing well section of the I-layer group of the jaw 1 well is 4857.85-4861.38m, and the stratum fracture pressure of the well section of the I-layer group (4851.0-4861.0m) of the well is as follows according to the pressure gradient:
h × C4856.0 × 0.0243 MPa 118.00MPa
According to the measured formation temperature data of the adjacent well, the formation temperature of the section of the I-layer group (4851.0-4861.0m) of the well is as follows:
T＝0.0343×4861.0+16.8047＝183.54℃
as shown in fig. 4, the construction curve of the construction process is shown. It can be seen from the figure that: 13:00-15:00, squeezing acid liquor into the stratum with the discharge capacity of 0.8-1.2 m3And (4) stopping pumping for 40min at the pump pressure of 65-97 MPa, and reducing the construction pressure in the later period and the operation risk after the acid liquor reacts. The front fracturing fluid is driven into the fracturing fluid at the speed of 16:00 to start fracturing construction, and the construction discharge capacity is 3-4 m3Min, construction pressure of 104-118 MPa and accumulated sand amount of 41.0m3The highest sand ratio is 17 percent, and the total pumped liquid amount is 641.0m3。
Example 3 (new bovine 1 well):
the section of the test gas well of the I-layer group of the Niuxin 1 well is 5303.90-5329.50m, and the fracture pressure of the stratum of the section of the I-layer group of the Niuxin 1 well (5303.90-5329.50m) is as follows according to the pressure gradient:
p (broken) ═ H × C ═ 5315.0 × 0.0243 ═ 129.2MPa
According to the measured formation temperature data of the adjacent well, the formation temperature of the section of the I-layer group (5303.90-5329.50m) of the well is as follows:
T＝0.0343h+16.8047＝0.0343×5315.0+16.8047＝199.1092℃
as shown in fig. 5, the construction curve of the construction process is shown. It can be seen from the figure that: 18:30-22:00, and the acid liquor is squeezed into the stratum with the discharge capacity of 0.8-1.2 m3And/min, pumping pressure of 52-83MPa, stopping pumping for 40min, and reducing construction pressure in later period and operation risk after the acid liquor reacts. 22:50, starting to drive in the pre-fracturing fluid, starting fracturing construction, wherein the construction discharge capacity is 2.5-3 m3Min, construction pressure of 93-107 MPa and accumulated sand amount of 61.1m3Maximum sand ratio of 15%, total pumped liquid amount of 783.0m3。
The field test shows that the packer has the highest construction pressure of 118MPa, the maximum construction pressure difference of 92MPa, the formation temperature of 199 ℃, good sealing performance and obviously improved pressure bearing performance of the rubber cylinder.
Claims (7)
1. A temperature-resistant pressure-resistant rubber cylinder is characterized by comprising an upper rubber component (2), a sealing rubber cylinder (3) and a lower rubber component (4) which are sequentially sleeved on the outer side of a central pipe (9) from top to bottom; wherein,
the upper rubber component (2) comprises an upper outer spacer ring (202), an upper inner spacer ring (201), a rubber cylinder (204), a lower inner spacer ring (205) and a lower outer spacer ring (206) which are sequentially sleeved from top to bottom; the upper inner spacer ring (201) is pressed on the top surface of the rubber cylinder (204), and the lower inner spacer ring (205) abuts against the bottom surface of the rubber cylinder (204); the outer walls of the upper inner spacer ring (201) and the lower inner spacer ring (205) are both recessed inwards to form an arc concave surface with the outer diameter gradually increasing from top to bottom, and the inner walls of the upper outer spacer ring (202) and the lower outer spacer ring (206) are both processed into arc convex surfaces which are respectively matched with the outer walls of the upper inner spacer ring (201) and the lower inner spacer ring (205); the steel wire mesh (203) is coated and fixed on the outer wall of the rubber barrel (204), and the upper end and the lower end of the steel wire mesh (203) are respectively arranged and fixed between the upper inner spacer ring (201) and the upper outer spacer ring (202) and between the lower inner spacer ring (205) and the lower outer spacer ring (206);
the lower rubber component (4) and the upper rubber component (2) have the same structure.
2. The temperature-resistant and pressure-resistant rubber cylinder according to claim 1, characterized in that the width of the steel wire mesh (203) is greater than the sum of the widths of the upper inner partition ring (201), the lower inner partition ring (205) and the rubber cylinder (204), so that the steel wire mesh (203) completely covers the outer side wall surfaces of the upper inner partition ring (201), the lower inner partition ring (205) and the rubber cylinder (204).
3. The temperature-resistant and pressure-resistant rubber cylinder according to claim 2, characterized in that the steel wire mesh (203) is integrally vulcanized with the outer wall of the upper inner spacer ring (201), the outer wall of the lower inner spacer ring (205), the outer wall of the rubber cylinder (204), the inner wall of the upper outer spacer ring (202) and the inner wall of the lower outer spacer ring (206), respectively.
4. The temperature-resistant and pressure-resistant rubber cylinder according to claim 1, characterized in that the axial length ratio of the upper rubber component (2), the sealing rubber cylinder (3) and the lower rubber component (4) is 6:5: 6.
5. A high-temperature and high-pressure packer formed by the temperature-resistant and pressure-resistant rubber cylinder of claim 1 is characterized by comprising an upper joint (1), the temperature-resistant and pressure-resistant rubber cylinder, an upper piston (5), a locking ring (14), a lower piston (7) and a lower joint (10) which are sequentially sleeved on the outer side of the central pipe (9) from top to bottom; wherein,
the upper joint (1) and the lower joint (10) are fixed at the top end and the bottom end of the central pipe (9);
the temperature-resistant and pressure-resistant rubber cylinder is abutted against the bottom surface of the upper joint (1);
the upper piston (5) and the lower piston (7) are arranged at intervals; the locking ring (14) is arranged and fixed on the inner side of the upper piston (5), and one-way stepping threads which can be matched with the locking ring (14) are processed on the outer wall of the central pipe (9) and above the locking ring (14); a cylinder sleeve (6) is sleeved and fixed on the outer sides of the upper piston (5) and the lower piston (7), so that an annular space (13) is defined among the central pipe (9), the cylinder sleeve (6), the upper piston (5) and the lower piston (7);
two liquid circulation holes (11) are formed in the side wall of the central pipe (9) along the circumferential direction, so that the inner cavity of the central pipe (9) is communicated with the annular space (13) through the liquid circulation holes (11);
four shear pins (8) are arranged on the outer wall of the lower side of the cylinder sleeve (6) along the circumferential direction, and the cylinder sleeve (6) is fixed on the lower piston (7); four set screws (12) are arranged on the outer wall of the lower side of the lower piston (7) along the circumferential direction, and the lower piston (7) is fixed on the lower joint (10).
6. A high-temperature and high-pressure packer as claimed in claim 4, characterized in that double sealing rings are arranged between the upper joint (1) and the base pipe (9) and between the lower joint (10) and the base pipe (9).
7. A high-temperature high-pressure packer as claimed in claim 4, characterized in that double sealing rings are respectively arranged between the upper piston (5) and the central pipe (9) and between the cylinder liner (6) and the lower piston (7); and a sealing ring is respectively arranged between the upper piston (5) and the cylinder sleeve (6) and between the lower piston (7) and the central pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129971.XA CN106894784B (en) | 2017-03-07 | 2017-03-07 | High temperature and pressure packer and heat resisting and pressure resisting packing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129971.XA CN106894784B (en) | 2017-03-07 | 2017-03-07 | High temperature and pressure packer and heat resisting and pressure resisting packing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106894784A true CN106894784A (en) | 2017-06-27 |
| CN106894784B CN106894784B (en) | 2019-03-19 |
Family
ID=59184608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710129971.XA Active CN106894784B (en) | 2017-03-07 | 2017-03-07 | High temperature and pressure packer and heat resisting and pressure resisting packing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106894784B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060905A (en) * | 2016-11-07 | 2018-05-22 | 天津汇铸石油设备科技有限公司 | High temperature and pressure packer |
| CN108680314A (en) * | 2018-05-10 | 2018-10-19 | 安徽理工大学 | A kind of sliding sleeve of bushing thermal modeling test device |
| CN112611640A (en) * | 2020-10-22 | 2021-04-06 | 西南石油大学 | Device and method for testing high-temperature compression performance of variable-specification multi-size rubber cylinder |
| CN113567068A (en) * | 2021-07-24 | 2021-10-29 | 西南石油大学 | Device and method for testing sealing performance parameters of packer of oil and gas well |
| CN114542006A (en) * | 2020-11-26 | 2022-05-27 | 中国石油天然气集团有限公司 | Sealed cartridge assembly and packer of gluing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202081856U (en) * | 2011-06-09 | 2011-12-21 | 曲哲 | Rubber drum of expanding packer |
| CN204476351U (en) * | 2014-12-23 | 2015-07-15 | 曲哲 | Inflatable anchoring packer packing element |
| CN204476350U (en) * | 2014-12-23 | 2015-07-15 | 曲哲 | Big orifice Inflatable type packer rubber sleeve |
| CN105298434A (en) * | 2015-11-23 | 2016-02-03 | 天鼎联创密封技术（北京）有限公司 | Rubber barrel capable of resisting high-temperature steam, compressed type packer and sealing method |
| CN105545246A (en) * | 2016-03-07 | 2016-05-04 | 荆州市赛瑞能源技术有限公司 | High-temperature high-pressure hydraulic recoverable packer |
| CN105863553A (en) * | 2016-06-20 | 2016-08-17 | 天鼎联创密封技术（北京）有限公司 | Packer element with lower end sealing ring wrapped by two copper sheets, packer and bridge plug |
| US9447653B1 (en) * | 2014-03-16 | 2016-09-20 | Elie Robert Abi Aad | Inflatable packer |
| CN206144512U (en) * | 2016-11-07 | 2017-05-03 | 天津汇铸石油设备科技有限公司 | High -temperature and high -pressure packer |
| CN108060905A (en) * | 2016-11-07 | 2018-05-22 | 天津汇铸石油设备科技有限公司 | High temperature and pressure packer |
-
2017
- 2017-03-07 CN CN201710129971.XA patent/CN106894784B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202081856U (en) * | 2011-06-09 | 2011-12-21 | 曲哲 | Rubber drum of expanding packer |
| US9447653B1 (en) * | 2014-03-16 | 2016-09-20 | Elie Robert Abi Aad | Inflatable packer |
| CN204476351U (en) * | 2014-12-23 | 2015-07-15 | 曲哲 | Inflatable anchoring packer packing element |
| CN204476350U (en) * | 2014-12-23 | 2015-07-15 | 曲哲 | Big orifice Inflatable type packer rubber sleeve |
| CN105298434A (en) * | 2015-11-23 | 2016-02-03 | 天鼎联创密封技术（北京）有限公司 | Rubber barrel capable of resisting high-temperature steam, compressed type packer and sealing method |
| CN105545246A (en) * | 2016-03-07 | 2016-05-04 | 荆州市赛瑞能源技术有限公司 | High-temperature high-pressure hydraulic recoverable packer |
| CN105863553A (en) * | 2016-06-20 | 2016-08-17 | 天鼎联创密封技术（北京）有限公司 | Packer element with lower end sealing ring wrapped by two copper sheets, packer and bridge plug |
| CN206144512U (en) * | 2016-11-07 | 2017-05-03 | 天津汇铸石油设备科技有限公司 | High -temperature and high -pressure packer |
| CN108060905A (en) * | 2016-11-07 | 2018-05-22 | 天津汇铸石油设备科技有限公司 | High temperature and pressure packer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060905A (en) * | 2016-11-07 | 2018-05-22 | 天津汇铸石油设备科技有限公司 | High temperature and pressure packer |
| CN108060905B (en) * | 2016-11-07 | 2024-02-20 | 天津汇铸石油设备科技有限公司 | High-temperature high-pressure packer |
| CN108680314A (en) * | 2018-05-10 | 2018-10-19 | 安徽理工大学 | A kind of sliding sleeve of bushing thermal modeling test device |
| CN112611640A (en) * | 2020-10-22 | 2021-04-06 | 西南石油大学 | Device and method for testing high-temperature compression performance of variable-specification multi-size rubber cylinder |
| CN112611640B (en) * | 2020-10-22 | 2022-05-17 | 西南石油大学 | Device and method for testing high-temperature compression performance of variable-specification multi-size rubber cylinder |
| CN114542006A (en) * | 2020-11-26 | 2022-05-27 | 中国石油天然气集团有限公司 | Sealed cartridge assembly and packer of gluing |
| CN113567068A (en) * | 2021-07-24 | 2021-10-29 | 西南石油大学 | Device and method for testing sealing performance parameters of packer of oil and gas well |
| CN113567068B (en) * | 2021-07-24 | 2024-05-17 | 西南石油大学 | Device and method for testing sealing performance parameters of oil-gas well packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106894784B (en) | 2019-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106894784B (en) | High temperature and pressure packer and heat resisting and pressure resisting packing element | |
| CN102667054B (en) | Interchangeable drillable tool | |
| RU2636951C2 (en) | Annular barrier with seal | |
| CN105484695A (en) | Mechanical hydraulic double-acting expansion device suitable for expansion tube drilling | |
| US20110265986A1 (en) | Multiple layer extrusion limiter | |
| CN101720378A (en) | Be used to make the apparatus and method of tube element expansion | |
| CN103046893B (en) | Composite rubber sleeve packer | |
| CN202090886U (en) | External metal cage pipe packer | |
| WO2017198121A1 (en) | Rubber cylinder having higher stiffness in upper end portion, packer, and bridge plug | |
| CN113863907B (en) | Carbon dioxide composite layered handling pipe column | |
| CN117967208A (en) | Multifunctional integrated pipe column and method for well completion and yield increase of ultra-deep and ultra-thick reservoir | |
| CN203347736U (en) | Water-injection packer capable of being subjected to deblocking step by step | |
| CN105781482B (en) | The harder packing element of upper and lower end parts, packer and bridge plug | |
| US10655424B2 (en) | Buckle prevention ring | |
| CN205172493U (en) | High anchoring power water conservancy anchor | |
| CN110847846B (en) | Packer for oil field exploitation | |
| CN107178363B (en) | Leakage finding pipe column for casing change well and leakage finding process thereof | |
| CN108104754B (en) | Casing patching device and method | |
| CN106639911B (en) | Reducing floating coupling | |
| CN205025420U (en) | Combined action layered steam drive packer | |
| CN218862581U (en) | Retrievable large-drift-diameter double-anchoring high-pressure hydraulic packer | |
| CN201982057U (en) | Gradually-deblocking well-flushing type packer | |
| CN203022683U (en) | Composite rubber sleeve packer | |
| CN205638341U (en) | Water injection packer | |
| CN109653706B (en) | Packer capable of backwashing well and setting for multiple times |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210915 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right |