CN208792972U - A kind of pressure limiting unlatching continuous impulse cementing tool - Google Patents
A kind of pressure limiting unlatching continuous impulse cementing tool Download PDFInfo
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- CN208792972U CN208792972U CN201820809621.8U CN201820809621U CN208792972U CN 208792972 U CN208792972 U CN 208792972U CN 201820809621 U CN201820809621 U CN 201820809621U CN 208792972 U CN208792972 U CN 208792972U
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- mandrel
- lower contact
- top connection
- shell
- connection
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Abstract
The utility model relates to oilfield engineering technical field of tools, continuous impulse cementing tool is opened more particularly to a kind of pressure limiting, it is mainly used in coiled tubing or oil pipe cementing and water injection work, including top connection, lower contact, shell and mandrel, the left end of mandrel is connect with top connection, the right end of mandrel is connect with lower contact, shell is wrapped in the outside of mandrel and connect with top connection and lower contact, butterfly spring piece is provided between mandrel and top connection, mandrel includes centre bore and water hole, centre bore is connected to water hole, centre bore and water hole shape angle at 45 °, top connection water hole is connected to centre bore, mandrel, a cavity is formed between shell and lower contact.The utility model solves the problems, such as that media flow is slow-footed in constant pressure water flooding mud or the injecting process, changes the low pressure taxis flow behavior of medium, so that cementing or water injection technology are more efficient, more reliable.
Description
Technical field
The utility model relates to oilfield engineering technical field of tools, open continuous impulse water filling more particularly to a kind of pressure limiting
Bricklayer's's tool, is mainly used in coiled tubing or oil pipe cementing and water injection work.
Background technique
When utilizing oil pipe cementing or water injection work in oilfield engineering service field at present, usually oil pipe is transferred to
Behind position, pump priming mud or liquid carry out cement plug and water injection work.The tool generallyd use is exactly common syringe pipe, perseverance row
The operation of amount.When the cementing of normal developing head or water filling, it is only capable of easily making by the pumping-in equipment control pressure on ground, constant pressure operation
At entrained air bubbles in cement, media flow speed is slow, and water filling only enters the low interval of stressor layer on earth, cause water filling uneven etc.
Problem all has a great impact to cement plug and water filling quality.
Summary of the invention
The deficiency of the utility model in order to overcome the above technical problems provides a kind of pressure limiting unlatching continuous impulse cementing
Tool solves the problems, such as that media flow is slow-footed in constant pressure water flooding mud or the injecting process, changes the low pressure taxis of medium
Flow behavior so that cementing or water injection technology are more efficient, more reliable.
The technical solution for solving above-mentioned technical problem is as follows:
A kind of pressure limiting unlatching continuous impulse cementing tool, including top connection (1), lower contact (4), shell (2), mandrel
(3) it is connect with butterfly spring piece (6), the left end of the mandrel (3) with top connection (1), the right end of mandrel (3) and lower contact
(4) it connects, the shell (2) is wrapped in the outside of mandrel (3) and connect with top connection and lower contact (4), the mandrel
(3) it is provided between top connection (1) butterfly spring piece (6), the mandrel (3) includes centre bore (3-1), the second sealing ring
Slot (3-2) and water hole (3-3), the centre bore (3-1) are connected to water hole (3-3), the centre bore (3-1) and water hole
(3-3) shape angle at 45 °, the top connection (1) are provided with the first connection screw thread (1-4), the first connection screw thread (1-
4) it is connect with top connection water hole (1-3), the top connection water hole (1-3) is connected to centre bore (3-1), the mandrel
(3), it is formed between shell (2) and lower contact (4) cavity (9).
Further, the first seal groove (1-1) is arranged in the right end of the top connection (1), the first seal groove (1-
1) the first sealing ring (5) are installed in, the upper surface (3-4) of mandrel (3) forms by the first sealing ring (5) with top connection (1) close
Envelope.
Further, the right end of the mandrel (3) is provided with the second seal groove (3-2), second sealing
It is equipped with the second sealing ring (7) in ring recess (3-2), the mandrel (3) passes through the second sealing ring (7) and the first of shell (2)
Sealing surface (2-3) forms sealing.
Further, the right end of the mandrel (3) is provided with joint face (3-5), the joint face (3-5) with
Sealing inclined-plane (4-4) contact of lower contact (4), which is formed, to be tightly connected.
Further, first connection screw thread (1-4) is connect with supporting tool, the right side of the top connection (1)
Side is additionally provided with the second connection screw thread (1-2), the first screw thread being arranged in second connection screw thread (1-2) and shell (2)
Connector (2-1) is cooperatively connected.
Further, third connection screw thread (4-1) is arranged in the right side of the lower contact (4), the third connection
Screw thread (4-1) is connect with supporting tool, and the 4th connection screw thread (4-2) is arranged in the left side of the lower contact, and the described the 4th connects
It connects the second threaded connector (2-2) being arranged on screw thread (4-2) and shell (2) to be cooperatively connected, the left part of lower contact (4) is set
It is equipped with third seal groove (4-3), is equipped with third sealing ring (8) in third seal groove (4-3), lower contact (4) passes through the
Three sealing rings (8) and the secondary sealing area (2-4) of shell (2), which are formed, to be sealed.
The beneficial effects of the utility model are:
The utility model has obtained a kind of pressure limiting unlatching continuous impulse cementing tool, solves constant pressure water flooding mud or water filling
The slow-footed problem of media flow in the process changes the low pressure taxis flow behavior of medium, so that cementing or water filling work
Skill is more efficient, more reliable.The metal sealing that the mandrel of the utility model and lower contact are formed, sealing effect is good, shock resistance
It is excellent.The quantity of the butterfly spring piece of the utility model is adjustable, so as to adjust sealing opening force, is efficiently slidingly sealed, friction system
Number is lower, and sealing effect is good.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of mandrel；
Fig. 3 is the structural schematic diagram of top connection；
Fig. 4 is the structural schematic diagram of shell；
Fig. 5 is the structural schematic diagram of lower contact；
In figure: 1 is top connection, and 2 be shell, and 3 be mandrel, and 4 be lower contact, and 5 be the first sealing ring, and 6 be butterfly spring
Piece, 7 be the second sealing ring, and 8 be third sealing ring, and 9 be cavity, and 1-1 is the first seal groove, and 1-2 is the second connection screw thread, 1-
3 be top connection water hole, and 1-4 is the first connection screw thread, and 2-1 is the first threaded connector, and 2-2 is the second threaded connector, and 2-3 is
Primary sealing area, 2-4 are secondary sealing area, and 3-1 is center hole, and 3-2 is the second seal groove, and 3-3 is water hole, and 3-4 is mandrel
Upper surface, 3-5 are joint face, and 4-1 is third connection screw thread, and 4-2 is the 4th connection screw thread, and 4-3 is third seal groove, 4-4
For sealing inclined-plane.
Specific embodiment
Embodiment 1:
A kind of pressure limiting unlatching continuous impulse cementing tool, including top connection 1, lower contact 4, shell 2, mandrel 3 and butterfly
The left end of spring leaf 6, mandrel 3 is connect with top connection 1, and the right end of mandrel 3 is connect with lower contact 4, and shell 2 is wrapped in mandrel 3
Outside is simultaneously connect with top connection and lower contact 4, and butterfly spring piece 6 is provided between mandrel 3 and top connection 1, and mandrel 3 includes center
Hole 3-1, the second seal groove 3-2 and water hole 3-3, centre bore 3-1 are connected to water hole 3-3, and centre bore 3-1 and water hole 3-3 are formed
45 ° of angles, top connection 1 are provided with the first connection screw thread 1-4, and the first connection screw thread 1-4 connect with top connection water hole 1-3, above connects
Head water hole 1-3 is connected to centre bore 3-1, and a cavity 9 is formed between mandrel 3, shell 2 and lower contact 4.The right end of top connection 1 is set
It sets and the first sealing ring 5 is installed in first seal groove 1-1, the first seal groove 1-1, mandrel upper surface 3-4 passes through the first sealing
Circle 5 is formed with top connection 1 and is sealed.The right end of mandrel 3 is provided in the second seal groove 3-2, the second seal groove 3-2 and is equipped with
Second sealing ring 7, mandrel 3 are formed by the primary sealing area 2-3 of the second sealing ring 7 and shell 2 and are sealed.The right end of mandrel 3 is set
It is equipped with joint face 3-5, joint face 3-5 contacts to form sealed connection with the sealing inclined-plane 4-4 of lower contact 4.First connection screw thread 1-4
It is connect with supporting tool, the right side of top connection 1 is additionally provided on the second connection screw thread 1-2, the second connection screw thread 1-2 and shell 2
The first threaded connector 2-1 being arranged is cooperatively connected.Third connection screw thread 4-1, third connection screw thread is arranged in the right side of lower contact 4
4-1 is connect with supporting tool, and the 4th connection screw thread 4-2 is arranged in the left side of lower contact, is set on the 4th connection screw thread 4-2 and shell 2
The the second threaded connector 2-2 set is cooperatively connected, and the left part of lower contact 4 is provided with third seal groove 4-3, third sealing ring
Third sealing ring 8 is installed, lower contact 4 forms close by the secondary sealing area 2-4 of third sealing ring 8 and shell 2 in slot 4-3
Envelope.
The working principle of the utility model is as follows:
Liquid enters mandrel centre bore 3-1 by top connection water hole 1-3, then enters mandrel 3, shell by water hole 3-3
In the cavity 9 that body 2 and lower contact 4 are formed.Because mandrel joint face 3-5 and lower contact sealing inclined-plane 4-4 forms sealing space, liquid
Body pressure rise compresses butterfly spring piece 6 while pushing mandrel 3 mobile to the tool left side, can be adjusted and be pressed according to pressure size
The quantity of contracting butterfly spring piece 6.After fluid pressure is increased to the power greater than the generation of butterfly spring piece 6, mandrel 3 is moved to the left,
Mandrel joint face 3-5 is separated with lower contact sealing inclined-plane 4-4, and highly pressurised liquid accelerates to seal from mandrel joint face 3-5 and lower contact
Gap outflow between inclined-plane 4-4.Fluid pressure reduces after liquid outflow, to be lower than butterfly spring piece power, mandrel 3 is in butterfly
Under spring leaf 6 acts on, move right.After mandrel joint face 3-5 and lower contact sealing inclined-plane 4-4 are contacted again, in cavity 9 again
Secondary pressure, repeats step as above, be concatenated to form the interruption of specific frequency be connected to, to form pulsatile effect.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to any simple modification to the above embodiments in technical spirit of the invention, equivalent variations, guarantor of the invention is each fallen within
Within the scope of shield.
Claims (6)
1. continuous impulse cementing tool is opened in a kind of pressure limiting, which is characterized in that including top connection (1), lower contact (4), shell
(2), the left end of mandrel (3) and butterfly spring piece (6), the mandrel (3) is connect with top connection (1), the right end of mandrel (3) with
Lower contact (4) connection, the shell (2) is wrapped in the outside of mandrel (3) and connect with top connection and lower contact (4), described
Mandrel (3) and top connection (1) between be provided with butterfly spring piece (6), the mandrel (3) includes centre bore (3-1), second
Seal groove (3-2) and water hole (3-3), the centre bore (3-1) are connected to water hole (3-3), the centre bore (3-1) and
Water hole (3-3) shape angle at 45 °, the top connection (1) are provided with the first connection screw thread (1-4), the first connection spiral shell
Line (1-4) is connect with top connection water hole (1-3), and the top connection water hole (1-3) is connected to centre bore (3-1), the core
A cavity (9) are formed between axis (3), shell (2) and lower contact (4).
2. continuous impulse cementing tool is opened in pressure limiting according to claim 1, which is characterized in that the top connection
(1) the first seal groove (1-1) is arranged in right end, installs the first sealing ring (5) in the first seal groove (1-1), mandrel (3)
Upper surface (3-4) is formed by the first sealing ring (5) and top connection (1) and is sealed.
3. continuous impulse cementing tool is opened in pressure limiting according to claim 1, which is characterized in that the mandrel (3)
Right end be provided with the second seal groove (3-2), the second sealing ring (7), institute are installed in second seal groove (3-2)
The mandrel (3) stated is formed by the primary sealing area (2-3) of the second sealing ring (7) and shell (2) and is sealed.
4. continuous impulse cementing tool is opened in pressure limiting according to claim 1, which is characterized in that the mandrel (3)
Right end be provided with joint face (3-5), the joint face (3-5) contacted with the sealing inclined-plane (4-4) of lower contact (4) to be formed it is close
Envelope connection.
5. continuous impulse cementing tool is opened in pressure limiting according to claim 1, which is characterized in that first connection
Screw thread (1-4) is connect with supporting tool, is additionally provided on the right side of the top connection (1) the second connection screw thread (1-2), described
The first threaded connector (2-1) being arranged in second connection screw thread (1-2) and shell (2) is cooperatively connected.
6. continuous impulse cementing tool is opened in pressure limiting according to claim 1, which is characterized in that the lower contact
(4) third connection screw thread (4-1) is arranged in right side, and the third connection screw thread (4-1) is connect with supporting tool, under described
The 4th connection screw thread (4-2), second be arranged in the 4th connection screw thread (4-2) and shell (2) is arranged in the left side of connector
Threaded connector (2-2) is cooperatively connected, and the left part of lower contact (4) is provided with third seal groove (4-3), third seal groove
It is equipped with third sealing ring (8) in (4-3), lower contact (4) passes through the secondary sealing area (2- of third sealing ring (8) and shell (2)
4) sealing is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820809621.8U CN208792972U (en) | 2018-05-29 | 2018-05-29 | A kind of pressure limiting unlatching continuous impulse cementing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820809621.8U CN208792972U (en) | 2018-05-29 | 2018-05-29 | A kind of pressure limiting unlatching continuous impulse cementing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208792972U true CN208792972U (en) | 2019-04-26 |
Family
ID=66200493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820809621.8U Active CN208792972U (en) | 2018-05-29 | 2018-05-29 | A kind of pressure limiting unlatching continuous impulse cementing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208792972U (en) |
-
2018
- 2018-05-29 CN CN201820809621.8U patent/CN208792972U/en active Active
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