CN206972194U - A kind of double acting self-filling-type float collar float shoe - Google Patents
A kind of double acting self-filling-type float collar float shoe Download PDFInfo
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- CN206972194U CN206972194U CN201720930273.5U CN201720930273U CN206972194U CN 206972194 U CN206972194 U CN 206972194U CN 201720930273 U CN201720930273 U CN 201720930273U CN 206972194 U CN206972194 U CN 206972194U
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Abstract
The utility model discloses a kind of double acting self-filling-type float collar float shoe, including body and the valve body for being arranged on body interior, valve body includes upper valve and lower valve, and upper valve body is used with body and is threadedly coupled, and passes through sealing mechanism and body realization sealing.Circulated for mud in the circulation aperture that upper valve body has standard.Dovetail sealing mechanism is integrally to vulcanize potted component on upper valve body, and overall sulfuration process designs with dovetail mechanism and may insure that rubber parts will not be washed damage.The dovetail sealing mechanism of upper prop plug valve and upper valve body forms first of sealing mechanism.Lower valve body is attached with body using screw thread, is realized and sealed by sealing mechanism and body.Lower valve body has multiple tracks lower valve circulation port, and overall circulation area meets standard requirement.Lower prop plug valve forms second sealing mechanism with lower valve body.It is designed with and cuts off in lower valve, for fixing upper and lower plunger valve, makes to form certain circulation hole between upper and lower plunger valve and upper lower valve, realize self-priming function.
Description
Technical field
A kind of float collar float plug is the utility model is related to, especially a kind of double acting self-filling-type float collar float shoe, for oil day
In the right solid completion practice of gas industry, it can realize that pipe seals in automatic grouting during well, and can effectively prevent well liquid within the cartridge from falling
Return.
Background technology
Float collar float plug is cementing tool the most frequently used in cementing operation, according to the mode of entrance of drilling fluid be divided into self filling type and
Non- self filling type.Current conventional use of float collar float plug uses single sealing means, larger use limitation be present, in mud
In circulation and Process of Cementing, the erosion of back pressure device is easily caused to damage.Float collar float plug back pressure device will be unable to once failing
Formation effectively seals against, and causes the serious well cementation accident of " sausage-filling ".Currently used self-filling-type float collar is mainly ball-throwing type, this
There is the problems such as complex operation, easily lose self-priming function in kind self-priming form, casing collapse equivalent risk be present.And in a bite well
In can only use one, cause certain risk.
Utility model content
Technical problem to be solved in the utility model is, it is proposed that a kind of double acting self-filling-type float collar float shoe, structure letter
Single, reasonable in design, abrasion resistance is good, can greatly improve the service life of float collar float plug.Self-priming piece safety is reliable, operation letter
It is single.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of double acting self-filling-type float collar
Float shoe, including body and the valve body for being arranged on body interior, body upper end are machined with the internal thread for being connected with bunch tube, under
End is machined with the external screw thread for being connected with bunch tube, and valve body includes upper valve and lower valve, and upper valve base is used with body and is threadedly coupled,
And sealed by sealing mechanism and body, upper valve base is provided centrally with the upper valve circulation port for mud circulation, upper valve base bottom
The guiding conical surface for enabling upper prop plug valve to enter easily in upper valve circulation port is provided with, upper valve swallow is designed with upper valve circulation port internal diameter
Tail sealing mechanism, upper valve dovetail sealing mechanism form certain projection on upper valve circulation port, are formed first with upper prop plug valve
Sealing mechanism；Lower valve base, using being threadedly coupled, is sealed with body by sealing mechanism and body, and lower valve base is " recessed " shape,
Center is provided with the through hole for moving up and down the connecting rod of connection upper prop plug valve and lower prop plug valve, positioned at logical on lower valve base
Hole outer periphery is provided with multiple tracks lower valve circulation port, and the inwall and lower valve base positioned at outside of lower valve circulation port fall " recessed " shape
Internal diameter on the same axis, is designed with lower valve dovetail sealing mechanism on lower valve base internal diameter, lower prop plug valve forms second with lower valve base
Road sealing mechanism；Upper prop plug valve smooth outer surface, top are for the benefit of guided into the sphere of circulation port, and lower prop plug valve passes through connection
Bar is attached with upper prop plug valve screw thread, and uses pin fastener, and spring housing is on the external diameter of lower prop plug valve connecting rod, on spring
End face and upper prop plug valve coordinate, and lower surface is seated on lower valve base, and upper valve base internal orifice dimension, which is designed with, prevents upper prop plug valve through upper
The limited step of valve circulation port, the via design in lower valve base center are cut off, and for fixing lower plunger valve position, are made
Certain circulation hole for realizing self-priming function is formed between upper and lower plunger valve and upper and lower valve body, in the connecting rod of lower prop plug valve
On be provided with screens ball, when cutting off fixed lower plunger valve position, screens ball just withstands on the logical of lower valve base center
The bottom of hole internal diameter.
The limited step of upper valve base does not contact with upper prop plug valve under normal circumstances, the platform formed by lower prop plug valve and lower valve base
Rank carries out spacing.
The potted component of upper valve is integrally vulcanized on upper valve base by upper valve dovetail groove, and the potted component of lower valve passes through lower valve
Dovetail groove integrally vulcanizes on lower valve base.
Upper valve base and the upper prop plug valve is fabricated using the material of drillability, and the brill for being advantageous to inner spool removes.
The lower valve base internal diameter base angle, the top and bottom edge of lower prop plug valve are designed with arc angling.
The beneficial effects of the utility model are：Double acting self-filling-type float collar float shoe, self-priming functional structure is simple, safety can
Lean on；Sealing mechanism is reasonable in design, and abrasion resistance is strong；The sealing stroke of upper and lower plunger valve is not interfere with each other, it is possible to achieve is sealed together
Mechanism is impaired not to influence second sealing mechanism, so as to improve the safety in utilization of float collar float plug.
Brief description of the drawings
Fig. 1 is the schematic diagram of the self-priming state of the utility model double acting self-filling-type float collar float shoe.
Fig. 2 is the schematic diagram of the opening of the utility model double acting self-filling-type float collar float shoe.
Fig. 3 is the schematic diagram of the closed mode of the utility model double acting self-filling-type float collar float shoe.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
As Figure 1-3, double acting self-filling-type float collar float shoe of the present utility model, including body 1 and be arranged in body
The valve body in portion, the upper end of body 1 be machined with the internal thread for being connected with bunch tube, and lower end is machined with for being connected with bunch tube
External screw thread, valve body include upper valve and lower valve, and upper valve base 2 is used with body 1 and is threadedly coupled, and close by sealing mechanism 4 and body 1
Envelope, upper valve base 2 are provided centrally with the upper valve circulation port 12 for mud circulation, and the bottom of upper valve base 2, which is provided with, enables upper prop plug valve 5
The guiding conical surface 13 entered easily in upper valve circulation port 12, upper valve dovetail sealing mechanism 3 is designed with the internal diameter of upper valve circulation port 12,
Upper valve dovetail sealing mechanism 3 forms certain projection on upper valve circulation port 12, and first of sealer is formed with upper prop plug valve 5
Structure；Lower valve base 7, using being threadedly coupled, is sealed with body 1 by sealing mechanism 11 and body 1, and lower valve base 7 is " recessed " shape,
Center is provided with the through hole for moving up and down the connecting rod of connection upper prop plug valve 5 and lower prop plug valve 10, upper in lower valve base 7
Through hole outer periphery is provided with multiple tracks lower valve circulation port 8, the inwall positioned at outside of lower valve circulation port 8 and falling for lower valve base 7
The internal diameter of " recessed " shape on the same axis, is designed with lower valve dovetail sealing mechanism 9, lower prop plug valve 10 is with on the internal diameter of lower valve base 7
Valve seat 7 forms second sealing mechanism；The smooth outer surface of upper prop plug valve 5, top are for the benefit of guided into the sphere of circulation port 12,
Lower prop plug valve 10 is attached by connecting rod and the screw thread of upper prop plug valve 5, and uses pin fastener, and spring 6 is enclosed on lower prop plug valve
On the external diameter of 10 connecting rods, the upper surface of spring 6 coordinates with upper prop plug valve 5, and lower surface is seated on lower valve base 7, the endoporus of upper valve base 2
Footpath is designed with the limited step for preventing upper prop plug valve 5 from passing through upper valve circulation port 12, and the via design in the center of lower valve base 7 has
14 are cut off, for fixing the position of lower prop plug valve 5, makes to be formed between upper and lower plunger valve and upper and lower valve body and certain realizes self-priming work(
Can circulation hole, screens ball 15 is provided with the connecting rod of lower prop plug valve 5, when cutting off the position of 14 fixation lower prop plug valve 5
When, screens ball 15 just withstands on the bottom of the through hole internal diameter of the center of lower valve base 7.
The limited step of upper valve base 2 does not contact with upper prop plug valve 5 under normal circumstances, by lower prop plug valve 10 and the shape of lower valve base 7
Into step carry out it is spacing.
The potted component of upper valve is integrally vulcanized on upper valve base 2 by upper valve dovetail groove, and the potted component of lower valve is under
Valve dovetail groove integrally vulcanizes on lower valve base 7.
The upper valve base 2 and upper prop plug valve 5 are fabricated using the material of drillability, and the brill for being advantageous to inner spool removes.
The internal diameter base angle of lower valve base 7, the top and bottom edge of lower prop plug valve 10 are designed with arc angling.
Specifically, on body 1 have with bunch tube identical screw thread specification, for being connected with bunch tube.Upper valve base 2 with
Body 1 is using threaded connection.Upper valve base 2 is realized by sealing mechanism 4 and body 1 and sealed.Upper valve base 2 passes through with upper prop plug valve 5
Dovetail sealing mechanism 3 forms first of sealing mechanism.There is lower prop plug valve 10 integrated connection bar to be connected with upper prop plug valve 5 by screw thread
Connect, and use pin fastener.Lower valve base 7 forms second sealing mechanism with lower prop plug valve 10 by dovetail sealing mechanism 9.Lower valve
On be designed with and cut off 14, for fixed plunger valve up and down, make to form certain opening between upper and lower plunger valve and upper lower valve base
Gap, realize self-priming function.Screens ball 15 forms support force with 7 corresponding neck of lower valve base, bears the fluid column during decentralization of pipe string
Thrust, protection cut off 14 and are not formed fatigue rupture by fluid column thrust.14, spring 6 is cut off mutually to restrict with screens ball 15, can
To form certain circulation canal when ensuring that pipe seals in well, self-priming function is realized.And ensure in pipe string tripping in process, spacing ball 15
It will not be come off from stopper slot.
During circulation, the circulation of huge discharge turn on pump, mud enters circulation port, due to self-priming hole circulation area set in advance compared with
It is small, high pressure is formed, cutting is cut off, and upper and lower plunger valve 5,10 moves downward, after screens ball 12 departs from the stopper slot of lower valve base 7,
Lose spacing, be washed away under deadweight and mud mobilization force.After termination of pumping, cut due to cutting off, the punching of limiting card integument
Brush away, self-priming float collar loses self-priming function, becomes conventional float collar float plug.After completing circulation and cement injecting operation, in spring 6 and shaft bottom
Under the collective effect of fluid column lifting force, upper and lower plunger valve 5,10 is pushed into corresponding sealing mechanism, forms double acting sealer
Structure, realize the function of preventing that mud from returning.
The utility model double acting self-filling-type float collar float shoe solves single back pressure mechanism in mud circulation and Process of Cementing
In be easy to failure the problem of, realize safe and reliable self-priming function, it is ensured that pipe seal in well process will not ahead relieving self-priming, release
It is simple, reliable from irrigation method.
In summary, content of the present utility model is not limited in the above embodiments, in same area it is insighted it
Scholar can easily propose other embodiments within technological guidance's thought of the present utility model, but this embodiment is all wrapped
Include within the scope of the utility model.
Claims (5)
- A kind of 1. double acting self-filling-type float collar float shoe, it is characterised in that including body (1) and it is arranged on the valve body of body interior, Body (1) upper end is machined with the internal thread for being connected with bunch tube, and lower end is machined with the external screw thread for being connected with bunch tube, Characterized in that, valve body includes upper valve and lower valve, upper valve base (2) is used with body (1) and is threadedly coupled, and passes through sealing mechanism (4) sealed with body (1), upper valve base (2) is provided centrally with the upper valve circulation port (12) for mud circulation, under upper valve base (2) Portion is provided with the guiding conical surface (13) for making upper prop plug valve (5) to enter easily in upper valve circulation port (12), upper valve circulation port (12) Upper valve dovetail sealing mechanism (3) is designed with internal diameter, upper valve dovetail sealing mechanism (3) is formed necessarily on upper valve circulation port (12) Projection, with upper prop plug valve (5) formed first of sealing mechanism；Lower valve base (7) is used with body (1) and is threadedly coupled, by close Sealing mechanism (11) seals with body (1), and lower valve base (7) is " recessed " shape, and being provided with center makes connection upper prop plug valve (5) The through hole moved up and down with the connecting rod of lower prop plug valve (10), through hole outer periphery is provided with multiple tracks on lower valve base (7) Lower valve circulation port (8), the inwall positioned at outside of lower valve circulation port (8) and lower valve base (7) fall " recessed " shape internal diameter same On axis, lower valve dovetail sealing mechanism (9) is designed with lower valve base (7) internal diameter, lower prop plug valve (10) and lower valve base (7) form the Two sealing mechanisms；Upper prop plug valve (5) smooth outer surface, top is for the benefit of guided into the sphere of circulation port (12), lower plunger Valve (10) is attached by connecting rod and upper prop plug valve (5) screw thread, and uses pin fastener, and spring (6) is enclosed on lower prop plug valve (10) on the external diameter of connecting rod, spring (6) upper surface coordinates with upper prop plug valve (5), and lower surface is seated on lower valve base (7), on Valve seat (2) internal orifice dimension is designed with the limited step for preventing upper prop plug valve (5) from passing through upper valve circulation port (12), in lower valve base (7) The via design of heart position cuts off (14), for fixing lower prop plug valve (5) position, make upper and lower plunger valve and upper and lower valve body it Between form certain circulation hole for realizing self-priming function, screens ball (15) is provided with the connecting rod of lower prop plug valve (5), When cutting off (14) fixation lower prop plug valve (5) position, screens ball (15) is just withstood in the through hole of lower valve base (7) center The bottom in footpath.
- 2. double acting self-filling-type float collar float shoe according to claim 1, it is characterised in that upper valve base (2) under normal circumstances Limited step does not contact with upper prop plug valve (5), and the step formed by lower prop plug valve (10) and lower valve base (7) carries out spacing.
- 3. double acting self-filling-type float collar float shoe according to claim 1, it is characterised in that the potted component of upper valve passes through upper valve Dovetail groove integrally vulcanizes on upper valve base (2), and the potted component of lower valve is integrally vulcanized in lower valve base (7) by lower valve dovetail groove On.
- 4. double acting self-filling-type float collar float shoe according to claim 1, it is characterised in that the upper valve base (2) and upper plug Valve (5) is fabricated using the material of drillability, and the brill for being advantageous to inner spool removes.
- 5. double acting self-filling-type float collar float shoe according to claim 1, it is characterised in that lower valve base (7) the internal diameter base angle, The top and bottom edge of lower prop plug valve (10) is designed with arc angling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720930273.5U CN206972194U (en) | 2017-07-28 | 2017-07-28 | A kind of double acting self-filling-type float collar float shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720930273.5U CN206972194U (en) | 2017-07-28 | 2017-07-28 | A kind of double acting self-filling-type float collar float shoe |
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| Publication Number | Publication Date |
|---|---|
| CN206972194U true CN206972194U (en) | 2018-02-06 |
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ID=61397796
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720930273.5U Active CN206972194U (en) | 2017-07-28 | 2017-07-28 | A kind of double acting self-filling-type float collar float shoe |
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| CN (1) | CN206972194U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118128454A (en) * | 2024-05-08 | 2024-06-04 | 牡丹江石油工具有限责任公司 | Self-grouting while-drilling check valve |
-
2017
- 2017-07-28 CN CN201720930273.5U patent/CN206972194U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118128454A (en) * | 2024-05-08 | 2024-06-04 | 牡丹江石油工具有限责任公司 | Self-grouting while-drilling check valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210707 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd., No. 83, Second Street, economic and Technological Development Zone, Binhai New Area, Tianjin, 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |