CN210483629U - Reverse circulation well cementation casing float collar device - Google Patents
Reverse circulation well cementation casing float collar device Download PDFInfo
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- CN210483629U CN210483629U CN201921295178.8U CN201921295178U CN210483629U CN 210483629 U CN210483629 U CN 210483629U CN 201921295178 U CN201921295178 U CN 201921295178U CN 210483629 U CN210483629 U CN 210483629U
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Abstract
The utility model discloses a reverse circulation well cementation sleeve pipe float collar device, which comprises an inner pipe, a float collar sleeve pipe and a float collar drainage tube, wherein the float collar sleeve pipe is sleeved on the inner pipe, the float collar drainage tube is arranged outside the float collar sleeve pipe and is used for introducing cement slurry into the bottom of the inner pipe; a sealing frame and a bearing ring are arranged in the inner pipe, the bearing ring moves upwards through a sliding block connected to the inner wall of the floating hoop casing pipe under the action of cement slurry, and a sealing head on the bearing ring can be matched with a sealing groove at the lower part of the sealing frame in a sealing clamping manner so as to realize the sealing of the inner part of the inner pipe; the sealing flange is adopted to seal the sealing chamber and the reserved pipe section, the sealing plug and the blower are matched to form a simple leakage-detecting device, and the leakage-detecting device can be used for detecting whether the inner pipe is completely sealed or not according to the reading calculation of the pressure gauge and the thermometer. The utility model discloses it is convenient to use, brings very big facility for staff's work.
Description
Technical Field
The utility model belongs to the technical field of the well cementation operation is relevant and specifically relates to a reverse circulation well cementation sleeve pipe float collar device.
Background
The casing floating collar is one of the casing accessories, the deep well and the special well can be used together with the casing floating shoe, the safety of cementing operation is improved, in the casing running process, the one-way flow of annular drilling fluid is realized, the backflow of cement slurry in the cementing process is prevented, the pressure release and the waiting set after well cementation and pressing are realized, and the cementing quality of a cement sheath and a casing is improved; meanwhile, the buoyancy of the drilling fluid is adjusted by injecting the drilling fluid into the casing string, so that the hanging weight of the casing string meets the design requirement of casing running operation, the traditional cementing in the conventional sense means that cement slurry is injected into the casing and then is replaced into the annular space to achieve the purpose of sealing, the cementing mode has large problems, such as high cost, easy low pressure and easy leakage loss, and difficult fastening of a large temperature difference well, so that the problems are solved by utilizing a reverse circulation cementing mode, the cementing time is better shortened, the flow rate is higher, the replacement of the drilling fluid is cleaner, the cementing quality is greatly improved, in addition, the existing cementing mode needs to additionally utilize a leakage-detecting device to detect leakage after cementing, and is very inconvenient.
Disclosure of Invention
An object of the utility model is to solve above-mentioned technical problem and provide a convenient to use's reverse circulation well cementation sleeve pipe float collar device.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a reverse circulation well cementation casing floating collar device comprises an inner pipe and a floating collar casing, wherein the floating collar casing is sleeved on the outer wall of the inner pipe;
a sealing frame is arranged in the middle of the inner wall of the inner pipe, a plurality of flow channels are formed at the top of the sealing frame to realize the up-and-down communication of the inner part of the inner pipe, an annular sealing groove is formed at the outer edge of the lower part of the sealing frame, and a magnet is arranged at the middle position of the inner part of the sealing frame downwards;
the lower part of the sealing frame is provided with a bearing ring, the lower part of the bearing ring is closed, the upper part of the bearing ring is provided with a nylon ball, the top of the nylon ball is provided with a magnet, the magnet and the magnet are arranged up and down correspondingly and mutually adsorbed, the outer edge of the upper part of the bearing ring protrudes upwards to form an annular sealing head, the sealing head and the sealing groove are arranged up and down correspondingly, and the sealing head can be inserted in the sealing groove in a sealing manner in a matching manner after going upwards so as to block an overflowing channel on the sealing frame;
two sliding chutes are axially and symmetrically formed on the inner wall of the floating hoop sleeve, a sliding block is arranged on each sliding chute in a matched mode, long round holes are formed in the two sides of the inner tube respectively so that the sliding blocks can extend into the inner tube and can move up and down along the sliding chutes, each sliding block is fixedly connected with a fixing plate, each fixing plate is connected to the bottom of the sealing head through a spring column, slurry inlet openings are formed in the two sides of the inner tube respectively, each slurry inlet opening is communicated with the corresponding sliding chute, and the two slurry inlet openings are located below the sliding blocks;
the outer wall of the floating hoop sleeve is also provided with a floating hoop drainage tube, a slurry outlet at the bottom of the floating hoop drainage tube is communicated with the lower part of the inner tube, and a slurry outlet of the floating hoop drainage tube is positioned below a slurry inlet of the inner tube;
a sealing plug is inserted into the upper part of the inner wall of the inner pipe, a blower and an air inlet pipeline which penetrates through the sealing plug up and down are arranged on the sealing plug, and the blower blows air into the inner pipe through the air inlet pipeline;
the inner cavity of the inner tube between the sealing plug and the sealing frame is communicated with a sealing chamber through a reserved tube section, a pressure gauge and a thermometer are arranged in the sealing chamber, and the pressure gauge and the thermometer are respectively provided with a pressure transmitter and a temperature transmitter.
Preferably, the sealing head is made of rubber materials, the contact surface of the sealing head and the top of the sealing groove is of an arc-shaped structure, and the sealing head and the sealing groove can be sealed and clamped together in a matching mode.
Preferably, the magnet is the arc structure and inlays the top at the nylon ball with matcing, the magnetite be the arc structure and with the magnet phase-match at nylon ball top.
Preferably, the peripheral edge of the sealing plug is sleeved with a leakage-proof gasket, and the upper part of the sealing plug is fixedly connected with a handwheel through a connecting rod.
Preferably, one end of the reserved pipe section is welded with the inner pipe, the other end of the reserved pipe section is fixedly connected with the sealing chamber in a sealing mode through a sealing flange, and the part, close to the inner pipe, of the reserved pipe section is arranged obliquely downwards to form an inclined pipe section.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a bottom that the float collar drainage tube let in grout inner tube, because the density of grout is greater than the density of drilling fluid, the drilling fluid goes upward, under the effect of impact force, the slider goes upward, it goes upward to drive the spring post, and then the position of drive sealing head towards the seal groove removes, at this in-process, the spring post goes upward the back, because its pulling force, it goes upward to drive the bearing ring, finally drive the inside top of nylon ball contact seal frame, because magnetism between magnet and the magnetite, the inside top contact of nylon ball and seal frame is inseparabler, this appeal makes the contact between sealing head and the seal groove inseparabler once more, make the sealing head tightly live with the seal groove. Adopt sealing flange, seal up seal chamber and reservation pipeline section, cooperation sealing plug and hair-dryer form the simple and easy device of leaking of picking up, calculate according to the reading of pressure gauge and thermometer again for whether the detection inner tube is sealed completely, bring very big facility for staff's work.
Drawings
Fig. 1 is a schematic structural view of the present invention in an unsealed state;
FIG. 2 is an enlarged schematic view of A in FIG. 1;
FIG. 3 is a schematic structural view of the seal and its detection state of the present invention;
fig. 4 is a schematic structural view of the utility model after cement slurry is poured into the reserved pipe section in a sealing state;
in the figure: 1. an inner tube; 2. a floating collar sleeve; 3. a float collar drainage tube; 4. reserving a pipe section; 5. sealing the flange; 6. an inclined tube section; 7. a sealed chamber; 8. a pressure gauge and a thermometer; 9. a sealing plug; 10. a leak-proof gasket; 11. a connecting rod; 12. a hand wheel; 13. mounting grooves; 14. a blower; 15. an air inlet pipeline; 16. cement slurry; 17. a pulp inlet; 18. a chute; 19. a slider; 20. a fixing plate; 21. a spring post; 22. a sealing head; 23. a bearing ring; 24. nylon balls; 25. a magnet; 26. a seal holder; 27. a sealing groove; 28. a magnet is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1-4, the present invention provides a technical solution: a reverse circulation well cementation casing floating hoop device comprises an inner pipe 1, a floating hoop casing 2 and a floating hoop drainage pipe 3. The outer side of the inner pipe 1 is sleeved with a floating hoop sleeve 2, and the outer side of the floating hoop sleeve 2 is provided with a floating hoop drainage pipe 3.
A sealing frame 26 is arranged in the middle of the inner wall of the inner pipe 1, the sealing frame 26 is blocked in the inner pipe 1, and a plurality of overflowing channels are formed only at the top of the sealing frame 26 to realize the up-and-down communication in the inner pipe 1; an annular sealing groove 27 is formed on the outer edge of the lower part of the sealing frame 26; the sealing frame 26 has an inner hole formed therein, the inner hole is communicated with the flow passage, and a magnet 28 is disposed at a middle position of an upper portion of the inner hole facing downward.
The lower part of the sealing frame 26 is provided with a bearing ring 23, the lower part of the bearing ring 23 is closed, the upper part of the bearing ring 23 is provided with a nylon ball 24, the top of the nylon ball 24 is provided with a magnet 25, wherein, the magnet 28 and the magnet 25 are arranged up and down correspondingly and mutually adsorbed, the magnet 25 is of an arc structure and is embedded at the top of the nylon ball 24 in a matching way, and the magnet 28 is of an arc structure and is matched with the magnet 25 at the top of the nylon ball 24; the outer edge of the upper part of the supporting ring 23 upwards protrudes to form an annular sealing head 22, the sealing head 22 and the sealing groove 27 are arranged up and down correspondingly, the sealing head 22 can be inserted into the sealing groove 27 in a matched sealing mode after going upwards, the sealing head 22 is made of rubber materials, the contact surfaces of the tops of the sealing head 22 and the sealing groove 27 are of arc-shaped structures, and the sealing head 22 and the sealing groove 27 can be clamped together in a matched sealing mode. When the inner pipe 1 is not sealed, the inner part of the inner pipe 1 is communicated up and down through the overflowing channel, the inner hole of the sealing frame 26, and the gap between the sealing head 22 and the sealing groove 27; in the sealing operation, the lower portion of the support ring 23 is sealed and engaged with the seal groove 27 via the seal head 22, so that the inside of the inner pipe 1 is not opened vertically, thereby achieving the sealing function.
Axial symmetry is formed with two spouts 18 on the float collar sleeve 2 inner wall, it is equipped with a slider 19 to match respectively on every spout 18, be sliding connection between spout 18 and the slider 19, open respectively one slotted hole so that slider 19 can stretch into in the inner tube 1 and make slider 19 can reciprocate along spout 18 in the inner tube 1 both sides, the design of slotted hole avoids producing the interference between inner tube 1 and the slider 19, the inboard rigid coupling respectively of every slider 19 has a fixed plate 20, the top of every fixed plate 20 is a fixedly connected with spring post 21 respectively, the bottom at sealed head 22 is all connected at two spring post 21's top.
Two sides of the inner pipe 1 are respectively provided with a pulp inlet 17, each pulp inlet 17 is respectively communicated with a corresponding sliding chute 18, and the two pulp inlets 17 are both positioned below the sliding block 19; the floating hoop drainage tube 3 is arranged on the outer wall of the floating hoop casing tube 2, a pulp outlet at the bottom of the floating hoop drainage tube 3 is communicated with the lower part of the inner tube 1, and the pulp outlet of the floating hoop drainage tube 3 is positioned below a pulp inlet of the inner tube 1.
The inner wall upper portion cartridge of inner tube 1 has a sealing plug 9, the outside edge of sealing plug 9 is equipped with leak protection packing ring 10, the top fixedly connected with connecting rod 11 of sealing plug 9, the top fixedly connected with hand wheel 12 of connecting rod 11, mounting groove 13 has been seted up on the sealing plug 9, the internally mounted of mounting groove 13 has hair-dryer 14, the bottom of hair-dryer 14 is equipped with air-supply line 15, sealing plug 9 is run through to its bottom in the bottom of air-supply line 15, hair-dryer 14 can be bloied to inner tube 1 inside through air-supply line 15.
The inner space of the inner tube 1 between the sealing plug 9 and the sealing frame 26 communicates with a sealing chamber 7 via a reserve tube section 4. The sealed chamber 7 is internally provided with a pressure gauge and a temperature gauge 8, and the pressure gauge and the temperature gauge 8 are respectively provided with a pressure transmitter and a temperature transmitter. One end of the reserved pipe section 4 is welded with the inner pipe 1, the other end of the reserved pipe section is fixedly connected with the sealing chamber 7 in a sealing mode through a sealing flange 5, and the part, close to the inner pipe 1, of the reserved pipe section 4 is arranged obliquely downwards to form an inclined pipe section 6.
The working principle is as follows: firstly, the floating hoop drainage tube 3 is utilized to lead cement paste 16 into the bottom position of the inner tube 1, the cement paste 16 enters the floating hoop casing 2 through the slurry inlet 17 after passing through the bottom of the inner tube 1, at the moment, the original drilling fluid is quickly replaced by the cement paste 16, the drilling fluid quickly floats upwards because the sealing of the cement paste 16 is greater than the density of the drilling fluid, under the action of the impact force, the sliding block 19 moves upwards to drive the spring column 21 to move upwards and further drive the sealing head 22 to move towards the position of the sealing groove 27, in the process, after the spring column 21 moves upwards, the bearing ring 23 is driven to move upwards due to the pulling force of the spring column, the nylon ball 24 is finally driven to contact with the top of the inner hole of the sealing frame 26, due to the magnetism between the magnet 25 and the magnet 28, the contact between the nylon ball 24 and the top of the inner hole of the sealing, so that the sealing head 22 tightly seals the sealing groove 27, and the cementing operation of the device is realized after the cement slurry is hardened. After the well cementation is finished, the inner pipe 1 is plugged into a sealing plug 9, a leakage-proof gasket 10 prevents gas from escaping from the side of the sealing plug 9, a sealing flange 5 is used for communicating a sealing chamber 7 with a reserved pipe section 4 to ensure the sealing performance of a joint, a blower 14 is used for introducing wind power into the inner pipe 1 through an air inlet pipeline 15, the wind power is introduced into the sealing chamber 7 after passing through the reserved pipe section 4, at the moment, a pressure transmitter and a temperature transmitter are used for reading first readings of a pressure gauge and a temperature gauge 8, after a period of time, a pressure transmitter and a temperature transmitter are used for reading second readings of the pressure gauge and the temperature gauge 8 again, whether the gas leaks or not is calculated according to the front-back pressure difference and the temperature difference to judge whether the inner pipe 1 is completely sealed or not, if the sealing chamber 7 and the sealing plug 9 are completely sealed, cement slurry, the pipe sections are sealed for subsequent operations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a reverse circulation well cementation sleeve pipe float collar device, includes inner tube and float collar sleeve pipe, the float collar sleeve pipe suit is on the outer wall of inner tube its characterized in that:
a sealing frame is arranged in the middle of the inner wall of the inner pipe, a plurality of flow channels are formed at the top of the sealing frame to realize the up-and-down communication of the inner part of the inner pipe, an annular sealing groove is formed at the outer edge of the lower part of the sealing frame, and a magnet is arranged at the middle position of the inner part of the sealing frame downwards;
the lower part of the sealing frame is provided with a bearing ring, the lower part of the bearing ring is closed, the upper part of the bearing ring is provided with a nylon ball, the top of the nylon ball is provided with a magnet, the magnet and the magnet are arranged up and down correspondingly and mutually adsorbed, the outer edge of the upper part of the bearing ring protrudes upwards to form an annular sealing head, the sealing head and the sealing groove are arranged up and down correspondingly, and the sealing head can be inserted in the sealing groove in a sealing manner in a matching manner after going upwards so as to block an overflowing channel on the sealing frame;
two sliding chutes are axially and symmetrically formed on the inner wall of the floating hoop sleeve, a sliding block is arranged on each sliding chute in a matched mode, long round holes are formed in the two sides of the inner tube respectively so that the sliding blocks can extend into the inner tube and can move up and down along the sliding chutes, each sliding block is fixedly connected with a fixing plate, each fixing plate is connected to the bottom of the sealing head through a spring column, slurry inlet openings are formed in the two sides of the inner tube respectively, each slurry inlet opening is communicated with the corresponding sliding chute, and the two slurry inlet openings are located below the sliding blocks;
the outer wall of the floating hoop sleeve is also provided with a floating hoop drainage tube, a slurry outlet at the bottom of the floating hoop drainage tube is communicated with the lower part of the inner tube, and a slurry outlet of the floating hoop drainage tube is positioned below a slurry inlet of the inner tube;
a sealing plug is inserted into the upper part of the inner wall of the inner pipe, a blower and an air inlet pipeline which penetrates through the sealing plug up and down are arranged on the sealing plug, and the blower blows air into the inner pipe through the air inlet pipeline;
the inner cavity of the inner tube between the sealing plug and the sealing frame is communicated with a sealing chamber through a reserved tube section, a pressure gauge and a thermometer are arranged in the sealing chamber, and the pressure gauge and the thermometer are respectively provided with a pressure transmitter and a temperature transmitter.
2. The reverse circulation cementing casing float collar device according to claim 1, characterized in that: the sealing head is made of rubber materials, the contact surface between the sealing head and the top of the sealing groove is of an arc-shaped structure, and the sealing head and the sealing groove can be sealed and clamped together in a matching mode.
3. The reverse circulation cementing casing float collar device according to claim 1, characterized in that: the magnet is of an arc structure and is embedded at the top of the nylon ball in a matching mode, and the magnet is of an arc structure and is matched with the magnet at the top of the nylon ball.
4. The reverse circulation cementing casing float collar device according to claim 1, characterized in that: the peripheral edge of the sealing plug is sleeved with a leakage-proof gasket, and the upper part of the sealing plug is fixedly connected with a handwheel through a connecting rod.
5. The reverse circulation cementing casing float collar device according to claim 1, characterized in that: one end of the reserved pipe section is welded with the inner pipe, the other end of the reserved pipe section is fixedly connected with the sealing chamber in a sealing mode through a sealing flange, and the part, close to the inner pipe, of the reserved pipe section is arranged obliquely downwards to form an inclined pipe section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921295178.8U CN210483629U (en) | 2019-08-09 | 2019-08-09 | Reverse circulation well cementation casing float collar device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921295178.8U CN210483629U (en) | 2019-08-09 | 2019-08-09 | Reverse circulation well cementation casing float collar device |
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| Publication Number | Publication Date |
|---|---|
| CN210483629U true CN210483629U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921295178.8U Active CN210483629U (en) | 2019-08-09 | 2019-08-09 | Reverse circulation well cementation casing float collar device |
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| CN (1) | CN210483629U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216897A (en) * | 2021-05-27 | 2021-08-06 | 刘峰铄 | Float collar float shoe for well cementation construction |
| WO2023177448A1 (en) * | 2022-03-16 | 2023-09-21 | Halliburton Energy Services, Inc. | Sensor and actuator for autonomously detecting wellbore fluids and closing fluid path |
-
2019
- 2019-08-09 CN CN201921295178.8U patent/CN210483629U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216897A (en) * | 2021-05-27 | 2021-08-06 | 刘峰铄 | Float collar float shoe for well cementation construction |
| CN113216897B (en) * | 2021-05-27 | 2022-07-08 | 大庆市天德忠石油科技有限公司 | Float collar float shoe for well cementation construction |
| WO2023177448A1 (en) * | 2022-03-16 | 2023-09-21 | Halliburton Energy Services, Inc. | Sensor and actuator for autonomously detecting wellbore fluids and closing fluid path |
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Effective date of registration: 20210420 Address after: 300457 Tianjin Binhai New Area Development Zone No. second, No. 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300457 Tianjin Binhai New Area Development Zone No. second, No. 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |