CN110529068A - Special packer for underground non-metal pipe - Google Patents
Special packer for underground non-metal pipe Download PDFInfo
- Publication number
- CN110529068A CN110529068A CN201910746704.6A CN201910746704A CN110529068A CN 110529068 A CN110529068 A CN 110529068A CN 201910746704 A CN201910746704 A CN 201910746704A CN 110529068 A CN110529068 A CN 110529068A
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- Prior art keywords
- tube
- piston
- central tube
- center tube
- well
- Prior art date
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- 229910052755 nonmetal Inorganic materials 0.000 title abstract description 3
- 238000011010 flushing procedure Methods 0.000 claims description 39
- 238000012856 packing Methods 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 18
- 241000239290 Araneae Species 0.000 claims description 16
- 241000935974 Paralichthys dentatus Species 0.000 claims description 9
- 238000010008 shearing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 239000003129 oil well Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 210000003464 cuspid Anatomy 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
- E21B33/1265—Packers; Plugs with fluid-pressure-operated elastic cup or skirt with mechanical slips
-
- 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
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
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)
- Earth Drilling (AREA)
Abstract
The invention discloses a special packer for a downhole nonmetal pipe, which comprises: the upper end of the upper central tube is connected with an upper joint, the upper joint is connected with an outer barrel, the central tube is further sleeved with an outer central tube, the lower end of the outer central tube is provided with an upper pin hole provided with a shearing pin and an upper lock hole provided with an upper lock block, the outer central tube is sequentially sleeved with a slip seat, a conical body, a rubber barrel and a rubber barrel pressing cap from top to bottom, and the lower end of the slip seat is embedded with a plurality of slips; the upper port of the lower central tube is sleeved outside the lower port of the upper central tube, the lower end of the lower central tube is connected with a lower joint, a combining cap and a sheath are arranged on the lower joint, an inner piston is arranged between the sheath and the lower central tube, and a lower pressure hole is arranged on the lower central tube; the lock sleeve is connected between the upper end of the inner piston and the lower end of the rubber cylinder pressing cap, a lock ring is arranged on the inner side wall of the lock sleeve, a lock ring seat is fixed on the outer side of the upper end of the lower central tube in a sleeved mode, a clamping groove is formed in the lock ring seat, and the lock ring is matched with the clamping groove.
Description
Technical field
The invention belongs to oil exploitation underground equipment fields, and in particular to a kind of underground non-metallic pipe Special packer.
Background technique
The nonmetallic oil pipe in underground has stronger antiseptic property, can effectively slow down tube corrosion, simultaneously because this is nonmetallic
Tube inner wall is smooth, reduces tube inner wall fouling, reduces test and deploys the rate that is hampered, effectively extends separate injection tubing string service life.But
It is that non-metal oil conduit is process by fiber and macromolecule polymer material, compared with common iron, there is flexible, elongation
Height, the lower feature of tension compressive strength, thus require matching water injection packer single-stage deblocking pulling force smaller, it is conventional common
Water injection packer causes deblocking difficult due to unsealing power superposition and being well over the intensity of nonmetallic oil pipe, or even breaks oil pipe and cause
Down-hole accident.Simultaneously in the injecting process, packer lower part annular space seals the positive differential pressure of upper annulus to junior adjacent thereto
There is deblocking effect every device (above proposing deblocking), effect is quite obvious when annular space is without water filling layer position.Since non-metallic pipe has axially
The not measuring body characteristic of tension, it is desirable that upper part packer has the function of anti-upper top.
Summary of the invention
In consideration of it, it is an object of the invention to overcome the above problem or at least be partially solved or alleviate the above problem.
The present invention proposes a kind of underground non-metallic pipe Special packer, comprising:
Upper center tube, the upper end of the upper center tube are connected with top connection, and lower end is provided with the shaft shoulder, is connected in the top connection
Outer cylinder is further sleeved with exterior central tube on the central tube, and the lower part of the exterior central tube is provided with pin hole and upper lockhole, described
The lower end of exterior central tube is provided with a point valve threaded portion, described that valve threaded portion is divided to cover on the shaft shoulder, is equipped in the upper pin hole stubborn
Enter the upper shear pin of the upper center tube, be equipped with the upper locking piece for heading into the upper center tube in the upper lockhole, it is described it is outer in
Slip spider, conical surface body, packing element and rubber cylinder pressing cap are successively set on heart pipe from top to bottom, the lower end of the slip spider is embedded with multiple
Slips, the upper end of the packing element are in contact with the lower end of the conical surface body, and lower end is in contact with the rubber cylinder pressing cap, the packing element
Pressure cap is sleeved on the outside of the lower part of the upper center tube, and covers the upper lockhole；
Lower center tube, the upper end muzzle of the lower center tube is outside the lower port of the upper center tube, under the lower center tube
End is connected with lower contact, is provided in the lower contact and cap, and suit is fixed with sheath on described and cap, the sheath with it is described
Inner piston is provided between lower center tube, the lower end of the inner piston is connected with outer piston, the inner piston and the lower center
Pipe is slidingly sealed cooperation, and the outer piston and the sheath are slidingly sealed cooperation, lower pressure port are provided on the lower center tube,
The lower pressure port leads to the region between the outer piston and the sheath；
Lock tube, the lock tube are connected between the upper end of the inner piston and the lower end of the rubber cylinder pressing cap, the lock tube it is interior
Lock ring is provided on side wall, the outside suit of the upper end of the lower center tube is fixed with lock ring seat, is provided on the lock ring seat
Card slot, the card slot are matched with the lock ring seat, the upper end of the lock ring seat be covered on it is described divide on valve threaded portion, the lock
Ring is matched with the card slot.
High salinity gas well underground descaling tool of the invention also has following optional feature:
Optionally, it is provided with lower lockhole on the outer piston, lower closing piece is equipped in the lower lockhole, the lower closing piece is caught in institute
It states in lower contact, protection piston is further sleeved in the lower contact, the upper edge of the protection piston is covered on the lower lockhole
External port, be provided with lower pin hole on the protection piston, be equipped under being screwed into the lower contact and cut in the lower pin hole
Cut pin.
Optionally, it is provided with well washing hole on the outer cylinder, well-flushing slot is provided on the tube wall of the upper center tube, it is described
The lower part of exterior central tube is provided with well-flushing through-hole, and the well-flushing through-hole is connected with the well-flushing slot, is provided on the lock tube
Lower well washing hole.
Optionally, also slidable fit has well-flushing piston between the outer cylinder and the upper center tube, the well-flushing piston
Lower end withstands on the top of the slip spider, and spring, the well-flushing piston are provided between the top connection and the well-flushing piston
Slidably to the top and inside of the upper well washing hole.
Optionally, it is circumferentially provided with multiple anchor holes on the side wall of the upper interface, is slided respectively in each anchor hole close
Encapsulation is furnished with anchor fluke, and the inside setting of the outer cylinder is fluted, and the end of the groove and the anchor fluke matches.
Optionally, rubber tube seat is further sleeved on the upper center tube, the packing element is sleeved in the rubber tube seat, the glue
The upper end of cylinder base is threadedly coupled with the conical surface body.
Optionally, step is provided on the exterior central tube, the rubber tube seat is located at the top of the step.
Optionally, it is also equipped with limiting piston on the inside of the inner piston and the outer piston, the limiting piston is fixed
It is connected on the lower center tube.
Beneficial effects of the present invention:
Underground non-metallic pipe Special packer of the invention is used to be connected in nonmetallic oil pipe, on it central tube and outer center
Upper shear pin and upper locking piece are set between pipe, when needing to set, pressure water, pressure water are passed through into upper center tube and lower center tube
So that inner piston and outer piston between lower center tube and sheath is pushed lock tube and rubber cylinder pressing cap and packing element and conical surface body, makes packing element
It carries out setting movement with slips, upper locking piece just automatically terminates at this time；When needing to unlock, central tube, upper shear pin are put on upwards
It is cut off, upper center tube drives exterior central tube and slip spider to move upwards, and releases slips and packing element and sets state.The present invention
Underground non-metallic pipe Special packer use gradually deblocking structure, avoid in the injecting process because of packer lower part annular space pair
The positive differential pressure of upper annulus and cause junior's packer adjacent thereto to be easy the case where being unsealed, and use packing element and slips
It sets simultaneously, has the function of anti-upper top.
Detailed description of the invention
Fig. 1 is a kind of whole half section structure diagram of embodiment of underground non-metallic pipe Special packer of the invention.
In the above figure: 1, upper center tube；101, the shaft shoulder；102, well-flushing slot；2, top connection；3, outer cylinder；301, upper well-flushing
Hole；4, exterior central tube；401, divide valve threaded portion；402, well-flushing through-hole；5, upper shear pin；6, slip spider；601, slips；7, the conical surface
Body；8, packing element；9, rubber cylinder pressing cap；10, rubber tube seat；11, lower center tube；12, lower contact；And cap 13,；14, sheath；15, interior work
Plug；16, outer piston；17, lock tube；1701, lower well washing hole；18, lock ring；19, lock ring seat；20, lower closing piece；21, piston is protected；
22, lower shear pin；23, well-flushing piston；24, spring；25, anchor fluke；26, limiting piston；27, retaining ring；28, upper locking piece.
The present invention is described in further details below with reference to accompanying drawings and embodiments.
Specific embodiment
Embodiment 1
With reference to Fig. 1, the present invention proposes a kind of underground non-metallic pipe Special packer, comprising: upper center tube 1,11 and of lower center tube
Lock tube 17, the upper end of upper center tube 1 are connected with top connection 2, and lower end is provided with the shaft shoulder 101, outer cylinder 3 is connected in top connection 2, in
Exterior central tube 4 is further sleeved on heart pipe 1, the lower end of exterior central tube 4 is provided with pin hole and upper lockhole, the lower end of exterior central tube 4
It is provided with a point valve threaded portion 401, divides 401 sets of valve threaded portion on the shaft shoulder 101, is equipped in upper pin hole and is screwed into upper center tube 1
Upper shear pin 5 is equipped with the upper locking piece 28 for heading into upper center tube 1 in upper lockhole, is successively set with from top to bottom on exterior central tube 4
The lower end of slip spider 6, conical surface body 7, packing element 8 and rubber cylinder pressing cap 9, slip spider 6 is embedded with multiple slips 601, the upper end of packing element 8 and cone
The lower end of face body 7 is in contact, and lower end is in contact with rubber cylinder pressing cap 9, and rubber cylinder pressing cap 9 is sleeved on the outside of the lower part of upper center tube 1,
And cover upper lockhole；Outside the lower port of upper center tube 1, the lower end of lower center tube 11 is connected with the upper end muzzle of lower center tube 11
Lower contact 12, is provided in lower contact 12 and cap 13, and suit is fixed with sheath 14 on cap 13, sheath 14 and lower center tube 11 it
Between be provided with inner piston 15, the lower end of inner piston 15 is connected with outer piston 16, and inner piston 15 is slidingly sealed with lower center tube 11 matches
It closes, outer piston 16 and sheath 14 are slidingly sealed cooperation, lower pressure port are provided on lower center tube 11, lower pressure port leads to outer piston
Region between 16 and sheath 14；Lock tube 17 is connected between the upper end of inner piston 15 and the lower end of rubber cylinder pressing cap 9, lock tube 17
Lock ring 18 is provided on inner sidewall, the outside suit of the upper end of lower center tube 11 is fixed with lock ring seat 19, is arranged on lock ring seat 19
There is card slot, card slot is matched with lock ring seat 19, and the upper end of lock ring seat 19 is covered on point valve threaded portion 401, lock ring 18 and card slot
It matches.
In use, non-metallic pipe Special packer of the invention is connected on nonmetallic oil pipe, then wanted according to water filling
In the casing for seeking tripping in oil well, then high pressure water is injected in oil pipe, high pressure water is entered in sheath 14 by lower pressure port, and is pushed
Outer piston 16, inner piston 15, lock tube 17, rubber cylinder pressing cap 9, packing element 8 and conical surface body 7, conical surface body 7 strut slips 601, make its card
On wellbore casing, packing element 8 blocks wellbore casing after being squeezed, and realizes packer setting in wellbore casing, is setting
In the process, rubber cylinder pressing cap 9 moves up, and upper locking piece 28 is unlocked, and the lock ring 18 of 17 downside of lock tube is moved to the upper of lock ring seat 19, works as seat
Envelope complete pressure release after, packing element 8 have restore shape trend, can push down on rubber cylinder pressing cap 9, lock tube 17 and lock ring 18 together to
Under move to the upper edge of lock ring seat 19 after, lock ring 17 is stapled seat 19 and withstands, and prevents rubber cylinder pressing cap 9, lock tube 17 and lock ring 18
It moves downward, such packing element 8 keeps compression seal state, realizes self-locking.
When deblocking, oil pipe is above mentioned, cannot relatively move since slips 601 is stuck on oil well casing, be connected with slips 601
Slip spider 6, exterior central tube 4 be also secured on oil well casing, only top connection 2 drive upper center tube 1 with respect to exterior central tube 4 to
Upper movement, after upper shear pin 5 is cut, the shaft shoulder 101 for dividing valve threaded portion 401 to lose upper center tube 1 of exterior central tube 4 lower end
Support, separated with 19 phase of lock ring seat, lock ring seat 19 be stapled 18 be pressed down against deformation after, lock tube 17 continues to move downwards, discharge
Packing element 8；Continue upper lifting pipe post, the lower end that the shaft shoulder 101 on upper center tube 1 tangles exterior central tube 4 moves upwards, exterior central tube 4
It drives slips 601 and slip spider 6 to move upwards, is detached from slips 601 and wellbore casing and unseals.
Embodiment 2 is provided with lower lockhole, is equipped with lower closing piece in lower lockhole on the basis of embodiment 1 on outer piston 16
20, lower closing piece 20 is caught in lower contact 12, and protection piston 21, the upper edge covering of protection piston 21 are further sleeved in lower contact 12
In the external port of lower lockhole, protects and be provided with lower pin hole on piston 21, be equipped under being screwed into lower contact 12 and cut in lower pin hole
Cut pin 22.
During by the casing of non-metallic pipe Special packer tripping in oil well of the invention, lower closing piece 20 can be by outer work
Plug 16 is fixed, and is made to move up under the action of the frictional force for being internal surface of sleeve pipe with the lock tube 17 being connected, is avoided glue
Cylinder 8 and the starting of slips 601 are set.
Embodiment 3
On the basis of embodiment 1, with reference to Fig. 1, it is provided with well washing hole 301 on outer cylinder 3, is arranged on the tube wall of upper center tube 1
There is well-flushing slot 102, the lower part of exterior central tube 4 is provided with well-flushing through-hole 402, and well-flushing through-hole 402 is connected with well-flushing slot 102, lock
Lower well washing hole 1701 is provided on set 17.
After packing element 601 and slips 601 are set, lock tube 17 and rubber cylinder pressing cap 9 have had moved up a distance, lock at this time
The well-flushing through-hole 402 on lower well washing hole 1701 and exterior central tube 4 on set 17 is conducted, and high pressure water passes through lower 1701 He of well washing hole
Well-flushing slot 102 on well-flushing through-hole 402 and upper center tube 1 is flowed at well washing hole 301, makes the upper well washing hole on outer cylinder 3
301 form well-flushing passage with well-flushing slot 102, well-flushing through-hole 402 and lower well washing hole 1701, can enable packer of the invention
Realize anti-flushing well function.
Embodiment 4
On the basis of embodiment 1, also slidable fit has well-flushing piston 23 between outer cylinder 3 and upper center tube 1, well-flushing piston 23
Lower end withstands on the top of slip spider 6, is provided with spring 24 between top connection 2 and well-flushing piston 23, and well-flushing piston 23 is slidably extremely
The top and inside of upper well washing hole 301.
Spring 24 can push piston 23 to block upper well washing hole 301, so that well washing hole 301 is in normally off, instantly well-flushing
After hole 301 and well-flushing through-hole 402 and well-flushing slot 102 are connected, pressure water can push well-flushing piston 23 overcome 24 pressure of spring to
Upper movement opens well washing hole 301.
Embodiment 5
On the basis of embodiment 1, it is circumferentially provided with multiple anchor holes on the side wall of upper interface 2, is slided respectively in each anchor hole close
Encapsulation is furnished with anchor fluke 25, and the inside setting of outer cylinder 3 is fluted, and the end of groove and anchor fluke 25 matches.
After injection pressure in upper center tube 1, water pressure pushing anchor fluke 25 moves out in anchor hole, and anchor fluke 25 is made to withstand on outer cylinder 3
In the groove of inside, anchorage effect is played to outer cylinder 3, making will not phase with the slip spider 6 of the lower end in contact of outer cylinder 3 and exterior central tube 4
To movement, shear pin 5 will not be cut under high pressure in protection.
Embodiment 6
On the basis of embodiment 1, as shown in Figure 1, being further sleeved with rubber tube seat 10 on upper center tube 1, packing element 8 is sleeved on rubber tube seat
On 10, the upper end of rubber tube seat 10 is threadedly coupled with conical surface body 7.
Rubber tube seat 10 is interposed between exterior central tube 4 and packing element 8, and when setting, rubber tube seat 10 drives packing element 8 and eastern conical surface body
7 move upwards, while packing element 8 is squeezed, and can avoid generating unnecessary friction between packing element 8 and static exterior central tube 4.
Embodiment 7
On the basis of embodiment 1, step is provided on exterior central tube 4, rubber tube seat 10 is located at the top of step.
The step that the lower end of exterior central tube 4 is arranged in can catch on rubber tube seat 10 and move upwards, and when decompression, above put on center
Pipe 1, the shaft shoulder 101 of 1 lower end of upper center tube can push the step on exterior central tube 4, move it together with upper center tube 3,
And then slip spider 6 is pushed to move upwards, unseal slips 601.
Embodiment 8
On the basis of embodiment 7, the quantity of slips 601 is three, and three square holes, three cards are circumferentially evenly equipped on slip spider 6
Watts 601 tail portion is embedded in square hole respectively, and round tooth is distributed on one of slips 601, is distributed on other two slips 601
60 degree of canine teeth.
When putting on central tube 1 on continuing after upper shear pin 5 is cut off and being unsealed, be distributed with the slips 601 of round tooth with
The contact force of oil well casing is smaller, can be detached from casing prior to other slips 601 with lesser pulling force and unseal, and then other two points
The slips 601 for being furnished with 60 degree of canine teeth has the support of the slips 601 of circle tooth due to losing, it is easier to and it is detached from and unseals with casing, it can
It realizes with the deblocking power deblocking packer for being less than 40KN.
Embodiment 9
On the basis of embodiment 1, the inside of inner piston 15 and outer piston 16 is also equipped with limiting piston 26, and limiting piston 26 is solid
Surely it is connected on lower center tube 11.
When hydraulic in lower center tube 11 is more than design when setting pressure, limiting piston 26 can prevent outer piston 16 and interior
Piston 15 pushes lock tube 17 to continue up, and rubber cylinder pressing cap 9 and packing element 8 is avoided to be damaged by excessive compression.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.The well-known components and common structure or conventional means of component and the structure category industry that the present embodiment does not describe in detail,
Here it does not describe one by one.
Claims (8)
1. a kind of underground non-metallic pipe Special packer characterized by comprising
The upper end of upper center tube (1), the upper center tube (1) is connected with top connection (2), and lower end is provided with the shaft shoulder (101), described
It is connected in top connection (2) outer cylinder (3), is further sleeved with exterior central tube (4) on the central tube (1), the exterior central tube (4)
Lower part is provided with pin hole and upper lockhole, and the lower end of the exterior central tube (4) is provided with a point valve threaded portion (401), described to divide valve
Threaded portion (401) covers on the shaft shoulder (101), and the upper shear pin for being screwed into the upper center tube (1) is equipped in the upper pin hole
(5), be equipped with the upper locking piece (28) for heading into the upper center tube (1) in the upper lockhole, on the exterior central tube (4) on to
Under be successively set with slip spider (6), conical surface body (7), packing element (8) and rubber cylinder pressing cap (9), the lower end of the slip spider (6) is embedded with
Multiple slips (601), the upper end of the packing element (8) are in contact with the lower end of the conical surface body (7), lower end and the rubber cylinder pressing cap
(9) it is in contact, the rubber cylinder pressing cap (9) is sleeved on the outside of the lower part of the upper center tube (1), and covers the upper lockhole；
Lower center tube (11), the upper end muzzle of the lower center tube (11) is outside the lower port of the upper center tube (1), under described
The lower end of central tube (11) is connected with lower contact (12), and simultaneously cap (13), described and cap (13) are provided on the lower contact (12)
Upper suit is fixed with sheath (14), is provided between the sheath (14) and the lower center tube (11) inner piston (15), described
The lower end of inner piston (15) is connected with outer piston (16), and the inner piston (15) is slidingly sealed with the lower center tube (11) matches
It closes, the outer piston (16) and the sheath (14) are slidingly sealed cooperation, it is provided with lower pressure port on the lower center tube (11),
The lower pressure port leads to the region between the outer piston (16) and the sheath (14)；
Lock tube (17), the lock tube (17) be connected to the inner piston (15) upper end and the rubber cylinder pressing cap (9) lower end it
Between, it is provided with lock ring (18) on the inner sidewall of the lock tube (17), the outside of the upper end of the lower center tube (11), which is set with, to be fixed
Have lock ring seat (19), card slot is provided on the lock ring seat (19), the card slot is matched with the lock ring seat (19), the lock
The upper end of ring seat (19) is divided on valve threaded portion (401) described in being covered on, and the lock ring (18) matches with the card slot.
2. non-metallic pipe Special packer in underground according to claim 1, which is characterized in that set on the outer piston (16)
It is equipped with lower lockhole, is equipped in the lower lockhole lower closing piece (20), the lower closing piece (20) is caught in the lower contact (12), institute
It states and is further sleeved with protection piston (21) on lower contact (12), the upper edge of protection piston (21) is covered on the lower lockhole
External port is provided with lower pin hole on the protection piston (21), is equipped with and is screwed into the lower contact (12) in the lower pin hole
Lower shear pin (22).
3. non-metallic pipe Special packer in underground according to claim 1, which is characterized in that be arranged on the outer cylinder (3)
Have upper well washing hole (301), be provided with well-flushing slot (102) on the tube wall of the upper center tube (1), under the exterior central tube (4)
Portion is provided with well-flushing through-hole (402), and the well-flushing through-hole (402) is connected with the well-flushing slot (101), on the lock tube (17)
It is provided with lower well washing hole (1701).
4. non-metallic pipe Special packer in underground according to claim 3, which is characterized in that the outer cylinder (3) with it is described
There is well-flushing piston (23) also slidable fit between upper center tube (1), the lower end of the well-flushing piston (23) withstands on the slip spider
(6) top is provided with spring (24) between the top connection (2) and the well-flushing piston (23), the well-flushing piston (23)
Slidably to the top and inside of the upper well washing hole (301).
5. non-metallic pipe Special packer in underground according to claim 1, which is characterized in that the side of the upper interface (2)
It is circumferentially provided with multiple anchor holes on wall, is slidingly sealed and is equipped with anchor fluke (25) respectively in each anchor hole, the outer cylinder (3)
Inside setting is fluted, and the groove and the end of the anchor fluke (25) match.
6. non-metallic pipe Special packer in underground according to claim 1, which is characterized in that on the upper center tube (1)
It is further sleeved with rubber tube seat (10), the packing element (8) is sleeved on the rubber tube seat (10), the upper end of the rubber tube seat (10) and institute
State conical surface body (7) threaded connection.
7. non-metallic pipe Special packer in underground according to claim 6, which is characterized in that on the exterior central tube (4)
It is provided with step, the rubber tube seat (10) is located at the top of the step.
8. non-metallic pipe Special packer in underground according to claim 1, which is characterized in that the inner piston (15) and institute
It states and is also equipped on the inside of outer piston (16) limiting piston (26), the limiting piston (26) is fixedly connected on the lower center tube
(11) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746704.6A CN110529068A (en) | 2019-08-14 | 2019-08-14 | Special packer for underground non-metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746704.6A CN110529068A (en) | 2019-08-14 | 2019-08-14 | Special packer for underground non-metal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110529068A true CN110529068A (en) | 2019-12-03 |
Family
ID=68663208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910746704.6A Pending CN110529068A (en) | 2019-08-14 | 2019-08-14 | Special packer for underground non-metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110529068A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794710A (en) * | 2020-08-14 | 2020-10-20 | 西安电子科技大学 | Soluble bridge plug |
| CN115637952A (en) * | 2022-11-11 | 2023-01-24 | 中国石油天然气股份有限公司 | Gas injection double-seal packer and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6186227B1 (en) * | 1999-04-21 | 2001-02-13 | Schlumberger Technology Corporation | Packer |
| CN201546663U (en) * | 2009-11-11 | 2010-08-11 | 中国石油天然气股份有限公司 | Packer of high-efficient water injection washable well |
| CN201705275U (en) * | 2010-06-02 | 2011-01-12 | 中国石油天然气股份有限公司 | Packer capable of flushing well |
| CN104563946A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | Multilayer separate injection well step-by-step deblocking packer |
| CN211448604U (en) * | 2019-08-14 | 2020-09-08 | 中国石油天然气股份有限公司 | Special packer for underground non-metal pipe |
-
2019
- 2019-08-14 CN CN201910746704.6A patent/CN110529068A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6186227B1 (en) * | 1999-04-21 | 2001-02-13 | Schlumberger Technology Corporation | Packer |
| CN201546663U (en) * | 2009-11-11 | 2010-08-11 | 中国石油天然气股份有限公司 | Packer of high-efficient water injection washable well |
| CN201705275U (en) * | 2010-06-02 | 2011-01-12 | 中国石油天然气股份有限公司 | Packer capable of flushing well |
| CN104563946A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | Multilayer separate injection well step-by-step deblocking packer |
| CN211448604U (en) * | 2019-08-14 | 2020-09-08 | 中国石油天然气股份有限公司 | Special packer for underground non-metal pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794710A (en) * | 2020-08-14 | 2020-10-20 | 西安电子科技大学 | Soluble bridge plug |
| CN111794710B (en) * | 2020-08-14 | 2024-06-04 | 西安电子科技大学 | Soluble bridge plug |
| CN115637952A (en) * | 2022-11-11 | 2023-01-24 | 中国石油天然气股份有限公司 | Gas injection double-seal packer and method |
| CN115637952B (en) * | 2022-11-11 | 2024-04-30 | 中国石油天然气股份有限公司 | Gas injection double-seal packer and method |
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