CN209586346U - A kind of bet orchestration of the two-tube water injection technological string of blowout prevention - Google Patents
A kind of bet orchestration of the two-tube water injection technological string of blowout prevention Download PDFInfo
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- CN209586346U CN209586346U CN201822156518.0U CN201822156518U CN209586346U CN 209586346 U CN209586346 U CN 209586346U CN 201822156518 U CN201822156518 U CN 201822156518U CN 209586346 U CN209586346 U CN 209586346U
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Abstract
A kind of lower distributor of the two-tube water injection technological string of blowout prevention, lower nut are set in the lower end of lower axle, and the lower end inner wall of lower nut and the lower end outer wall of lower axle are threadedly coupled.Connector sleeve is set in the upper end of lower axle, and multiple springs are separately mounted in the spring mounting groove on corresponding elastomer block inner wall.The lower end of upper axis is inserted in the upper end of connector sleeve.Upper cap nut is arranged in upper axis upper end.Leather cup is equipped on upper axis, leather cup pressing sleeve and packing element, sealing drum is embedded on the middle part inner wall of top connection, in the lower end of the upper end insertion top connection of short circuit, in the upper end of the lower end insertion injection allocation connector of short circuit, in the lower end of the upper end insertion injection allocation connector of central tube, the upper end of lower contact is set on the lower end of injection allocation connector, the lower distributor of the two-tube water injection technological string of blowout prevention is when tubing string is gone into the well and plays pipe, blowout prevention in oil pipe can be achieved, with pressure it can complete surely measure operation, pressure is not brought to Environment protection of oil field, it reduces since well pressure release causes the breakage of casing, reduce the activity duration.
Description
Technical field
The utility model belongs to oil-field flooding technology field, specifically, being a kind of two-tube water injection technology pipe of blowout prevention
The bet orchestration of column.
Background technique
Currently, solving test by the way of two pipes dispensing to the thin note of the layering of middle-deep well and inclined shaft, horizontal well both at home and abroad
Problem；It is to have carried out the one of lower tubular column in the case where keeping certain pressure no killing well in pit shaft, not bleeding off pressure using Operating Pressure
The advanced underground work technology of kind.Compared to traditional underground work, Operating Pressure can be realized to greatest extent to oil-gas Layer and ring
The protection in border is conducive to water injection well and improves water-injection efficiency.There are operations to be still not perfect for existing two-tube water filling Operating Pressure, exists
More problem.
Utility model content
The purpose of the utility model is to provide a kind of bet orchestrations of the two-tube water injection technological string of blowout prevention.The utility model knot
Structure is simple, and execute-in-place is simple, blowout prevention in oil pipe when being able to achieve lower tubular column.
The technical solution adopted is that:
A kind of lower distributor of the two-tube water injection technological string of blowout prevention, including blanking plug and main body.
Technical points are:
Blanking plug, including lower nut, connector sleeve, spring, upper axis.
Lower nut is set in the lower end of lower axle, and the lower end inner wall of lower nut and the lower end outer wall of lower axle are threadedly coupled.Connection
It is set in the upper end of lower axle, the intermediate inner wall of connector sleeve is connected with the upper end outer wall thread of lower axle.Positioned at lower nut and connection
Between set, be arranged with elastomer block on lower axle outer wall, the upper and lower end of elastomer block be inserted into respectively connector sleeve lower end and lower nut
Upper end.Multiple springs are separately mounted in the spring mounting groove on corresponding elastomer block inner wall.Spring one end is supported in elastomer block
Spring mounting groove bottom surface on, the other end is supported on the outer wall of lower axle.The lower end of upper axis is inserted into and is threaded in connection
The upper end of set.It is arranged in upper axis upper end and is threaded with upper cap nut.Between upper cap nut and connector sleeve, on upper axis from up to
Under be arranged with leather cup, leather cup pressing sleeve and packing element, the rim of a bowl of above-mentioned leather cup is set up, the lower end of leather cup insertion leather cup pressing sleeve it is upper
Portion.
Main body, including top connection, sealing drum, short circuit, injection allocation connector, central tube, lower contact, lock, piston, shear pin, blocking
Device packing element sealing surface, blanking plug elastomer block annular groove.
Sealing drum is embedded on the middle part inner wall of top connection, and the upper end of short circuit is inserted into the lower end of top connection and the two screw thread
Connection, the lower end of short circuit is inserted into the upper end of injection allocation connector and the two is threadedly coupled, the upper end insertion injection allocation connector of central tube
In lower end and the two is threadedly coupled, and the upper end of lower contact is set on the lower end of injection allocation connector and the two is threadedly coupled, at center
Piston is installed between pipe and lower contact, piston is located at the lower section of injection allocation connector, inserted with shear pin, shear pin in lower contact and piston
Connect lower contact and piston.It installs and locks in internal piston, connect with central tube monodirectional locking.In the inner wall lower end of central tube from upper
Blanking plug packing element sealing surface and blanking plug elastomer block annular groove are successively arranged under.
Utility model has the advantages that pipe is gone into the well and risen to the lower distributor of the two-tube water injection technological string of blowout prevention in tubing string
When, it can be achieved that blowout prevention in oil pipe, with pressure can complete surely measure operation, not bring pressure to Environment protection of oil field, reduce due to water
Well pressure release causes the breakage of casing, reduces the activity duration.
Detailed description of the invention
Fig. 1 is the lower distributor main structure chart of the two-tube water injection string of blowout prevention.
Fig. 2 is the lower distributor plug structure figure of the two-tube water injection string of blowout prevention
Fig. 3 is the structure chart of first group of tubing string.
Fig. 4 is the structure chart of Jing Nei mechanism.
In Fig. 1,1- top connection, 2- sealing drum, 3- short circuit, 4- injection allocation connector, 5- central tube, 6- lower contact, 7- lock, 8- are living
Plug, 9- shear pin, 10- blanking plug packing element sealing surface, 11- blanking plug elastomer block annular groove, 12- blanking plug leather cup, 13- blanking plug glue
Axis, 17- blanking plug leather cup pressing sleeve, 18- blanking plug on cylinder, 14- blanking plug elastomer block, 15- blanking plug upper cap nut, 16- blanking plug
Nut under connector sleeve, 19- blanking plug spring, 20- blanking plug lower axle, 21- blanking plug, the first oil pipe of 22-, 23- upper packer,
Distributor, 30- tail under the second oil pipe of 24-, the upper distributor of 25-, 26- third oil pipe, 27- lower packet, the 4th oil pipe of 28-, 29-
Pipe, 31- are extremely stifled, 32-1.9TBG oil pipe, 33- are intubated.
Specific embodiment
A kind of two-tube water injection technological string of blowout prevention, including first group of tubing string and second group of tubing string.
First group of tubing string, including the first oil pipe 22, upper packer 23, the second oil pipe 24, upper distributor 25, third oil pipe
26, lower packet 27, the 4th oil pipe 28, lower distributor 29, tail pipe 30 and extremely stifled 31.First oil pipe 22, upper packer 23, second
Oil pipe 24, upper distributor 25, third oil pipe 26, lower packet 27, the 4th oil pipe 28, lower distributor 29, tail pipe 30 and extremely stifled 31
It is vertically arranged, is sequentially connected from top to bottom.
Second tubing string, including 1.9TBG oil pipe 32 and the lower end of intubation 33,1.9TBG oil pipe 32 are installed in the upper of intubation 33
End, 1.9TBG oil pipe 32 and intubation 33 are vertically arranged in first group of tubing string.
Lower distributor 29, including blanking plug and main body.
Blanking plug, including lower nut 21, connector sleeve 18, spring 19, upper axis 16.
Lower nut 21 is set in the lower end of lower axle 20, and the lower end inner wall of lower nut 21 and the lower end outer wall screw thread of lower axle 20 connect
It connects.Connector sleeve 18 is set in the upper end of lower axle 20, and the intermediate inner wall of connector sleeve 18 is connected with the upper end outer wall thread of lower axle 20.Position
Between lower nut 21 and connector sleeve 18, elastomer block 14 is arranged on 20 outer wall of lower axle, the upper and lower end of elastomer block 14 is inserted respectively
Enter the lower end of connector sleeve 18 and the upper end of lower nut 21.Multiple springs 19 are separately mounted to the bullet on corresponding 14 inner wall of elastomer block
In spring mounting groove.19 one end of spring is supported on the bottom surface of the spring mounting groove of elastomer block 14, and the other end is supported in lower axle 20
On outer wall.The lower end of upper axis 16 is inserted into and is threaded in the upper end of connector sleeve 18.It is arranged and is threadedly coupled in upper 16 upper end of axis
There is upper cap nut 15.Between upper cap nut 15 and connector sleeve 18, it is arranged with leather cup 12, leather cup pressing sleeve 17 from top to bottom on upper axis 16
It is set up with the rim of a bowl of packing element 13, above-mentioned leather cup 12, the top of the lower end insertion leather cup pressing sleeve 17 of leather cup 12.
Main body, including top connection 1, sealing drum 2, be shorted 3, injection allocation connector 4, central tube 5, lower contact 6, lock 7, piston 8, cut
Follow closely 9, blanking plug packing element sealing surface 10, blanking plug elastomer block annular groove 11.
Sealing drum 2 is embedded on the middle part inner wall of top connection 1, be shorted 3 upper end insertion top connection 1 lower end in and the two
It is threadedly coupled, is shorted in the upper end of 3 lower end insertion injection allocation connector 4 and the two is threadedly coupled, injection allocation is inserted into the upper end of central tube 5
In the lower end of connector 4 and the two is threadedly coupled, and the upper end of lower contact 6 is set on the lower end of injection allocation connector 4 and the two screw thread connects
It connects, piston 8 is installed between central tube 5 and lower contact 6, piston 8 is located at the lower section of injection allocation connector 4, in lower contact 6 and piston 8
On inserted with shear pin 9, shear pin 9 connects lower contact 6 and piston 8.Installation lock 7, connects with 5 monodirectional locking of central tube inside piston 8
It connects.It is successively arranged blanking plug packing element sealing surface 10 and blanking plug elastomer block annular groove 11 from top to bottom in the inner wall lower end of central tube 5.
The course of work:
1 tubing string of lower first time: dead stifled++ 3 1/2TBG oil pipe of at least one tail pipe+lower distributor of connection from the bottom to top+under
+ 3 1/2TBG oil pipe of packer+upper+3 1/2TBG oil pipe of distributor++ 3 1/2TBG oil pipe of upper packer is gone into the well to design position
It sets.
2 lower second of tubing string: connecting insertion+1.9TBG oil pipe is gone into the well, and intubation is inserted into lower distributor and is sealed with sealing drum,
Long well head of matching is adjusted to do little oil pipe extension.
3 packer sets: two pipe ring impact missing pressures, packer set are completed, continue to suppress and determine distributor in two-tube water filling
It presses piston to open, upper layer waterflood path is opened.
4 open lower layer's waterflood path:
Water filling is suppressed in little oil pipe, and lower distributor piston 8 cuts uplink after shear pin 9, and lock 7 is locked with central tube 5, under opening
Layer waterflood path.
5 water fillings: little oil pipe pours down layer, Big Inch and little oil pipe annular injection upper layer.
6 anti-flushing wells: oil jacket annulus is suppressed, and opens packer well-washing channel, carries out anti-flushing well；Well-flushing is complete, and water filling will be anti-again
Well-flushing passage is closed.
7 lift pipe string operations: putting into lower distributor blanking plug into little oil pipe, and pump, which is suppressed, to be applied on blanking plug leather cup 12,
Blanking plug downlink, blanking plug packing element 14 enter blanking plug packing element sealing surface 10 and form sealing, and blanking plug elastomer block 14 enters blocking
Device elastomer block annular groove 11 locks；First little oil pipe tubing string is risen, then preventing spraying operation above mentions oil pipe, by first time after removing seal for packer
Tubing string rises.
Technical parameter: 1. operating temperature: 120 DEG C
2. operating pressure: 35MPa
3. setting pressure: 8-10MPa
4. blowout prevention pressure: 25Mpa.
Claims (1)
1. a kind of lower distributor of the two-tube water injection technological string of blowout prevention, including blanking plug and main body；It is characterized in that:
Blanking plug, including lower nut (21), connector sleeve (18), spring (19), upper axis (16)；
Lower nut (21) is set in the lower end of lower axle (20), the lower end inner wall of lower nut (21) and the lower end outer wall spiral shell of lower axle (20)
Line connection；Connector sleeve (18) is set in the upper end of lower axle (20), outside the intermediate inner wall of connector sleeve (18) and the upper end of lower axle (20)
Wall is threadedly coupled；Between lower nut (21) and connector sleeve (18), elastomer block (14), bullet are arranged on lower axle (20) outer wall
The upper and lower end of property block (14) is inserted into the lower end of connector sleeve (18) and the upper end of lower nut (21) respectively；Multiple springs (19) are respectively
It is mounted in the spring mounting groove on corresponding elastomer block (14) inner wall；Support the spring in elastomer block (14) in spring (19) one end
On the bottom surface of mounting groove, the other end is supported on the outer wall of lower axle (20)；The lower end of upper axis (16) is inserted into and the company of being threaded in
The upper end of female connector (18)；It is arranged in upper axis (16) upper end and is threaded with upper cap nut (15)；In upper cap nut (15) and connector sleeve
(18) between, leather cup (12), leather cup pressing sleeve (17) and packing element (13), above-mentioned leather cup are arranged with from top to bottom on upper axis (16)
(12) the rim of a bowl is set up, the top of lower end insertion leather cup pressing sleeve (17) of leather cup (12)；
Main body, including top connection (1), sealing drum (2), short circuit (3), injection allocation connector (4), central tube (5), lower contact (6), lock
(7), piston (8), shear pin (9), blanking plug packing element sealing surface (10), blanking plug elastomer block annular groove (11)；
Sealing drum (2) is embedded on the middle part inner wall of top connection (1), be shorted (3) upper end insertion top connection (1) lower end in and
The two be threadedly coupled, be shorted (3) lower end insertion injection allocation connector (4) upper end in and the two threaded connection, central tube (5) it is upper
In the lower end of end insertion injection allocation connector (4) and the two is threadedly coupled, and the upper end of lower contact (6) is set under injection allocation connector (4)
On end and the two is threadedly coupled, and installs piston (8) between central tube (5) and lower contact (6), piston (8) is located at injection allocation connector
(4) lower section, inserted with shear pin (9) in lower contact (6) and piston (8), shear pin (9) connects lower contact (6) and piston (8)；
Installation lock (7), connect with central tube (5) monodirectional locking inside piston (8)；The inner wall lower end of central tube (5) from top to bottom
It is successively arranged blanking plug packing element sealing surface (10) and blanking plug elastomer block annular groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822156518.0U CN209586346U (en) | 2018-12-21 | 2018-12-21 | A kind of bet orchestration of the two-tube water injection technological string of blowout prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822156518.0U CN209586346U (en) | 2018-12-21 | 2018-12-21 | A kind of bet orchestration of the two-tube water injection technological string of blowout prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209586346U true CN209586346U (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822156518.0U Active CN209586346U (en) | 2018-12-21 | 2018-12-21 | A kind of bet orchestration of the two-tube water injection technological string of blowout prevention |
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| Country | Link |
|---|---|
| CN (1) | CN209586346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647912A (en) * | 2020-12-29 | 2021-04-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
-
2018
- 2018-12-21 CN CN201822156518.0U patent/CN209586346U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647912A (en) * | 2020-12-29 | 2021-04-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
| CN112647912B (en) * | 2020-12-29 | 2022-09-13 | 中国海洋石油集团有限公司 | Chemical flooding multi-medium layered injection pipe column and installation method thereof |
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