CN203097813U - Flow restricting self-filling float collar for manifold cycles - Google Patents
Flow restricting self-filling float collar for manifold cycles Download PDFInfo
- Publication number
- CN203097813U CN203097813U CN 201220351772 CN201220351772U CN203097813U CN 203097813 U CN203097813 U CN 203097813U CN 201220351772 CN201220351772 CN 201220351772 CN 201220351772 U CN201220351772 U CN 201220351772U CN 203097813 U CN203097813 U CN 203097813U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- float collar
- valve
- spring
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
A flow restricting self-filling float collar for manifold cycles mainly comprises a body, a valve seat, a shear pin, a seal ring, a valve body, a spring and a spring support, and is characterized in that the valve seat is arranged in the inner hole of the body, fixed at the upper part by the shear pin and sealed with the body through the sealing ring; the lower-end central hole of the valve seat is provided with a female circular conical surface matched with a valve portion of the valve body; and a locking mechanism allowing the valve seat to descend during collision pressure in well cementation rubber stopper pressing and preventing the valve seat from return upwards after the collision pressure. The locking mechanism comprises a slip block type locking mechanism and a clamp spring type locking mechanism. During sleeving pipe running, a limited passage allowing slurry to move upwards is formed between the valve seat and the valve body; the passage opens more during slurry circulation and recovers to the limited state after the circulation is stopped, without influencing self-filling performance during next sleeving pipe running; and thus manifold cycles can be performed. During well cementation rubber stopper pressing, a rubber stopper contacts with the end face of the valve seat, pressure is raised to be high enough to allow the valve seat to shear off the shear pin to descend, the lower end face of the valve seat contacts with the valve body and compresses the spring, and the valve seat continues descending until stops after touching stages. At this time, slurry pressure for lifting the rubber stopper raises, and thus the collision pressure is formed. Well cementation is then completed. The valve seat is then locked by the locking mechanism, and cannot move upwards.
Description
Affiliated technical field
The utility model relates to the oil cementing tool, particularly a kind of current limliting self filling type float collar that can repeatedly circulate of oil drilling cementing operation operation middle sleeve substructure.
Background technology
The float collar that cementing operation operation is at present used in bunch tube is current limliting self filling type float collar mostly.This float collar can be from irritating in the setting of casing process, when after setting of casing meets with obstruction circulating mud, this float collar will be broken can be from the pattern of irritating, just again can not be from mud grouting when continuing setting of casing, bring many inconvenience to construction, especially in the construction of deep-well, its weak point is more obvious.
The utility model content
In order to overcome the deficiencies in the prior art part, the utility model provides a kind of current limliting self filling type float collar that can repeatedly circulate.
The technical scheme that its technical problem that solves the utility model adopts is: this float collar mainly by body 1, valve seat 2, cut off 3, sealing ring 4, valve body 7, spring 8, spring fastening 9 form, in the setting of casing process, form the restricted access that can allow mud move from bottom to top between valve seat 2 and the valve body 7,7 times guilds of valve body make bigger that passage opens when circulating mud, after stopping circulation, passage can return to constrained state again, do not influence the performance that keeps when continuing setting of casing from filling, thereby can repeatedly circulate.It is characterized in that: circular ring type valve seat 2 is installed in the endoporus of body 1, fixing on top with cutting off, by sealing ring 4 and body 1 sealing, the lower end centre bore has the internal conical surface that partly is complementary with valve body 7 valves, is provided with when allowing the bruising of well cementation moulding plug valve seat 2 and cuts off and cut off 3 descending, bruising and prevent the retaining mechanism that valve seat 2 upwards returns after finishing on valve seat 2 and body 1.Valve seat 2 has sealing ring with valve body 7 sealing positions, and the sealing circle can be located on the outer conical surface of valve body 7, also can be located on the internal conical surface of valve seat 2.Described retaining mechanism has two kinds of slip segment formula and circlip types.
The slip segment formula is to have the square opening that slip segment and slips spring 5 are installed on valve seat 2 outer ring surfaces, the final position that valve seat (2) at body 1 endoporus middle part under slightly moves down processes the card tooth that matches with the slip segment thread form, when well cementation moulding plug, plug contact with valve seat 2 upper surfaces up to pressure be elevated to when setting value valve seat 2 cut off cut off 3 descending, valve seat 2 lower surfaces contact with valve body and compress spring 8 continue descending up to valve seat 2 run into step can not continue descending till, this moment, the mud pressure rising of top plug formed bruising, and well cementation finishes.At this moment, slip segment blocks can not make on the valve seat 2 and returns; Valve seat 2 compresses valve body 7, and spring 8 pressurizeds and shortening have stronger last thrust makes valve body 7 and valve seat 2 positiver sealings, and valve seat 2 relies on sealing ring 4 to form positiver sealings with body 1, so cement paste can not return.
Circlip type is to have the cannelure that jump ring 6 is installed on valve seat 2 outer ring surfaces, the final position that valve seat (2) at body 1 endoporus middle part under slightly moves down processes and jump ring 6 annular groove that matches, when well cementation moulding plug, plug contact with valve seat 2 upper surfaces up to pressure be elevated to when setting value valve seat 2 cut off cut off 3 descending, valve seat 2 lower surfaces contact with valve body and compress spring 8 continue descending up to valve seat 2 run into step can not continue descending till, this moment, the mud pressure rising of top plug formed bruising, and well cementation finishes.At this moment, valve seat 2 compresses valve body 7, spring 8 pressurizeds and shortening, jump ring 6 enlarged-diameter be stuck in make in the annular groove on the body 1 valve seat 2 can't on return; Valve seat 2 relies on sealing ring 4 to form positiver sealing with body 1, and valve seat 2 can not return with valve body 7 positiver sealings so cement paste.
To cut off the sealing reliability of 3 mounting screws 12 on body 1 in order improving, to prevent that the well cementation back from forming leakage points at mounting screw 12 places, increase an intermediate sleeve 11 between body 1 and valve seat 2.Intermediate sleeve 11 usefulness are fixed in the body 1 with the external screw thread that body 1 upper end box matches, process and valve seat 2, spring fastening 9 corresponding structure key elements in intermediate sleeve 11 inside, valve seat 2, cut off 3, sealing ring 4, valve body 7, spring 8, spring fastening 9 and retaining mechanism thereof be installed in the intermediate sleeve 11, forms an integral body---float collar valve body core.Float collar valve body core can be combined to form an independently float collar with body 1, also can use separately, is installed in the cannula carrier end of thread that will be lowered to and forms float collar.This float collar valve body core can use custom-designed plug, also can use traditional plug, as uses traditional plug can increase the shoulder height on valve seat 2 tops, to prevent from can not depress greater than the internal diameter of intermediate sleeve 11 because of the plug diameter generation of valve seat 2 phenomenons.
In order further to improve the sealing reliability of well cementation back float collar, valve seat 2 is designed to have the structure that the jump ring groove is arranged under the horn mouth to use the self-locking plug.Use the self-locking plug during well cementation, match with the self-locking plug seat that designs on the valve seat when making the self-locking plug arrive valve seat, and under the effect of jump ring, form self-locking, prevent that plug is up after bruising.
Float collar or float collar valve body core that intermediate sleeve 11 is arranged, in order to use common plug, valve seat 2 is made into the upper end a shape that adds high boss, uses common plug also can normally work.
The beneficial effects of the utility model are, compared with prior art, can not can repeatedly circulate when setting of casing is hampered from the problem of irritating after this utility model has solved conventional self filling type float collar and circulates midway, still have when continuing setting of casing from the ability of irritating; This utility model can also be processed into independently float collar valve body core, when when well cementation, just can play the effect of this utility model float collar to pack into the box end of required sleeve pipe of float collar valve body core.The float collar of this utility model can also be designed to the form together used with the self-locking plug, makes it have plug and valve seat, valve seat and valve body double seal.Use float collar valve body core independently can reduce the such joint of a body 1, the linking intensity that improves the sleeve pipe screw thread is reduced material consumption all be beneficial to.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is that a kind of current limliting self filling type float collar one retaining mechanism that can repeatedly circulate of the utility model is the complete section structural representation of slip segment formula.
Fig. 2 is that the utility model retaining mechanism is the complete section structural representation of circlip type.
Fig. 3 is that to have increased intermediate sleeve 11, retaining mechanism be the complete section structural representation of slip segment formula to the utility model
Fig. 4 is that to have increased intermediate sleeve 11, retaining mechanism be the complete section structural representation of circlip type to the utility model.
Fig. 5 is the utility model, and retaining mechanism is the slip segment formula, the complete section structural representation of the float collar valve body core that can use separately.
Fig. 6 is the utility model, and retaining mechanism is a circlip type, the complete section structural representation of the float collar valve body core that can use separately.
The improvement structure chart of valve seat 2 when Fig. 7 is the utility model (slip segment formula) use self-locking plug.
The improvement structure chart of valve seat 2 when Fig. 8 is the utility model (circlip type) use self-locking plug.
Fig. 9 is the utility model (slip segment formula) when intermediate sleeve 11 is arranged, the improvement structure chart of the valve seat 2 when using traditional plug.
Figure 10 is the utility model (circlip type) when intermediate sleeve 11 is arranged, the improvement structure chart of the valve seat 2 when using traditional plug.
1. bodies among the figure, 2. valve seat 3. cuts off, 4. sealing ring, 5. slip segment and slips spring, 6. jump ring, 7. valve body, 8. spring, 9. spring fastening, 10. pad and lock pin, 11. intermediate sleeve, 12. screws.
The specific embodiment
In Fig. 1, Fig. 2, body 1 has the box that links with the bunch tube pin thread for the upper end, and the lower end has and the link hollow circular cylinder of pin thread of bunch tube box, and valve seat 2, valve body 7, spring 8, spring fastening 9 are installed in the hole within it.Valve seat 2 rely on cut off 3 and sealing ring 4 link with body 1 endoporus and fixing, rely on slip segment and slips spring 5 or jump ring 6 to form the retaining mechanism of float collars.Pad and lock pin 10 give valve body 7 location, and screw 12 guarantees to cut off the sealing of 3 installing hole places after can making and cutting off 3 installations.Because the external diameter of valve seat 2 is consistent with casing inner diameter, can use common plug.
In Fig. 3, Fig. 4, because cut off 3 mounting screw 12 exists sealing on body 1 hidden danger,, on the basis of Fig. 1, Fig. 2, improve for preventing leakage, increase intermediate sleeve 11.Intermediate sleeve 11 outer upper ends have the pin thread that matches with the sleeve pipe box, and the external diameter of pin thread bottom and body 1 internal diameter match.Valve seat 2, cut off 3, sealing ring 4, valve body 7, spring 8, spring fastening 9 and retaining mechanism thereof be installed in the intermediate sleeve 11, forms an integral body---float collar valve body core.Here because the external diameter of valve seat 2 than lacking slightly with casing inner diameter, can not use common plug, the plug that should use special point diameter and valve seat to match.
In Fig. 5, Fig. 6, be the float collar valve body core that can use separately, intermediate sleeve 11 outer upper ends have the pin thread that matches with the sleeve pipe box, and the external diameter of pin thread bottom matches with the casing inner diameter that will install.Here because the external diameter of valve seat 2 than lacking with casing inner diameter, can not use common plug, the plug that should use special point diameter and valve seat to match.
In Fig. 7, Fig. 8, in order further to improve the sealing reliability of well cementation back float collar, valve seat 2 upper design are become can use the shape of self-locking plug, use the self-locking plug during well cementation, match with the self-locking plug seat that designs on the valve seat when making the self-locking plug arrive valve seat, and under the effect of jump ring, form self-locking, prevent that plug is up after bruising.
In Fig. 9, Figure 10, the float collar or the float collar valve body core of intermediate sleeve 11 arranged, in order to use common plug when cementing the well, valve seat 2 is made into the upper end a shape that adds high boss.
Claims (8)
1. current limliting self filling type float collar that can repeatedly circulate, this float collar is mainly by body (1), valve seat (2), cut off (3), sealing ring (4), valve body (7), spring (8), spring fastening (9) is formed, it is characterized in that: valve seat (2) is installed in the endoporus of body (1), fixing on top with cutting off (3), by sealing ring (4) and body (1) sealing, the lower end centre bore has the internal conical surface that partly is complementary with valve body (7) valve, on valve seat (2) and body (1), be provided with when allowing the bruising of well cementation moulding plug valve seat (2) cut off cut off (3) descending, bruising prevents the retaining mechanism that valve seat (2) upwards returns after finishing.
2. a kind of current limliting self filling type float collar that can repeatedly circulate according to claim 1, it is characterized in that: described retaining mechanism to valve seat (2) is the slip segment formula, the retaining mechanism of this slip segment formula is to have the square opening that slip segment and slips spring (5) are installed on valve seat (2) outer ring surface, the final position that slightly following valve seat (2) moves down at body (1) endoporus middle part processes the card tooth that matches with the slip segment thread form, and pinning blocked tooth when the slip segment of valve seat (2) moved to card tooth position.
3. a kind of current limliting self filling type float collar that can repeatedly circulate according to claim 1, it is characterized in that: described retaining mechanism to valve seat (2) is a circlip type, the retaining mechanism of this circlip type is to have the cannelure that jump ring (6) is installed on valve seat (2) outer ring surface, the annular groove that the final position processes and jump ring (6) matches that slightly following valve seat (2) moves down at body (1) endoporus middle part, the jump ring (6) of valve seat (2) pins when moving to annular groove.
4. a kind of current limliting self filling type float collar that can repeatedly circulate according to claim 1, it is characterized in that: valve seat (2) has sealing ring with valve body (7) sealing position, the sealing circle can be located on the outer conical surface of valve body (7), also can be located on the internal conical surface of valve seat (2).
5. a kind of current limliting self filling type float collar that can repeatedly circulate according to claim 1, it is characterized in that: between body (1) and valve seat (2), increase an intermediate sleeve (11), intermediate sleeve (11) uses the external screw thread that matches with body (1) upper end box to be fixed in the body (1), process and valve seat (2) in intermediate sleeve (11) inside, spring fastening (9) corresponding structure key element, valve seat (2), cut off (3), sealing ring (4), valve body (7), spring (8), spring fastening (9) and retaining mechanism thereof are installed in the intermediate sleeve (11), form an integral body---float collar valve body core.
6. a kind of current limliting self filling type float collar that can repeatedly circulate according to claim 5 is characterized in that: have the float collar valve body core of intermediate sleeve (11) not use body (1) and use separately, be installed in the cannula carrier end of thread that will be lowered to and form float collar.
7. a kind of current limliting self filling type float collar that can repeatedly circulate according to claim 1 is characterized in that: on valve seat (2) upper design is become the structure that the jump ring groove is arranged under the horn mouth is arranged, to use the self-locking plug.
8. a kind of current limliting self filling type float collar that can repeatedly circulate according to claim 6 is characterized in that: valve seat (2) is modified into the upper end a shape that adds high boss, to use conventional plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220351772 CN203097813U (en) | 2012-07-16 | 2012-07-16 | Flow restricting self-filling float collar for manifold cycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220351772 CN203097813U (en) | 2012-07-16 | 2012-07-16 | Flow restricting self-filling float collar for manifold cycles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203097813U true CN203097813U (en) | 2013-07-31 |
Family
ID=48849222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220351772 Expired - Fee Related CN203097813U (en) | 2012-07-16 | 2012-07-16 | Flow restricting self-filling float collar for manifold cycles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203097813U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239958A (en) * | 2015-10-29 | 2016-01-13 | 中国石油集团渤海钻探工程有限公司 | Novel bumping-and-pressing-type float collar |
| CN107143304A (en) * | 2017-06-19 | 2017-09-08 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Anti- plug floating float collar device and cementing method |
| CN111779462A (en) * | 2020-08-02 | 2020-10-16 | 濮阳中原三力创高机械设备有限公司 | Floating hoop and rubber plug interlocking device and application method |
| CN117432367A (en) * | 2023-12-18 | 2024-01-23 | 中国石油集团渤海钻探工程有限公司 | Collision pressure reducing type liner cementing rubber plug system |
-
2012
- 2012-07-16 CN CN 201220351772 patent/CN203097813U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239958A (en) * | 2015-10-29 | 2016-01-13 | 中国石油集团渤海钻探工程有限公司 | Novel bumping-and-pressing-type float collar |
| CN105239958B (en) * | 2015-10-29 | 2017-07-18 | 中国石油集团渤海钻探工程有限公司 | A kind of new impact pressing floating hoop |
| CN107143304A (en) * | 2017-06-19 | 2017-09-08 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Anti- plug floating float collar device and cementing method |
| CN111779462A (en) * | 2020-08-02 | 2020-10-16 | 濮阳中原三力创高机械设备有限公司 | Floating hoop and rubber plug interlocking device and application method |
| CN117432367A (en) * | 2023-12-18 | 2024-01-23 | 中国石油集团渤海钻探工程有限公司 | Collision pressure reducing type liner cementing rubber plug system |
| CN117432367B (en) * | 2023-12-18 | 2024-02-23 | 中国石油集团渤海钻探工程有限公司 | Collision pressure reducing type liner cementing rubber plug system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204436360U (en) | Can switch separate stratum fracturing well cementation sliding sleeve | |
| CN203097813U (en) | Flow restricting self-filling float collar for manifold cycles | |
| CN204436320U (en) | A kind of hydraulic releasing big orifice packer | |
| CN204225847U (en) | Well cementation sliding sleeve | |
| CN102966327A (en) | Expansion pipe | |
| CN201915931U (en) | Special setting ball seat for fracture of horizontal well | |
| CN201062505Y (en) | Hollow suspension sub-releasing axle plug | |
| CN201439700U (en) | Blowout-prevention working valve barrel | |
| CN204754865U (en) | Ball seat bumps and presses seat combination tool for well cementation | |
| CN205135545U (en) | Play column type auto -lock plug and play column type self -lock device | |
| CN203383783U (en) | Closed-type bottom reversing switch | |
| CN202946131U (en) | Pawl spring clamping buckle type self-locking pressing crack sliding sleeve | |
| CN108119095B (en) | Self-grouting liner cementing ball seat | |
| CN201024980Y (en) | An oil field well fixing and self irrigation collision assembly | |
| CN201212374Y (en) | Oil sleeve zonal injection packer | |
| CN201568012U (en) | Stage hoop | |
| CN202866745U (en) | Cement plug positioner | |
| CN106522879B (en) | Calvus packing element insulates formula big orifice bridge plug | |
| CN204827359U (en) | But integration modus ponens oil recovery bridging plug | |
| CN202157784U (en) | Underground check valve | |
| CN204327045U (en) | Switching tools | |
| CN104314518A (en) | Opening-closing tool | |
| CN202954779U (en) | Novel flexible plug | |
| CN203570293U (en) | Locked slide sleeve seat | |
| CN201106441Y (en) | Three segment separate-infusing tubular pile for horizontal well water-injection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20150716 |
|
| EXPY | Termination of patent right or utility model |