CN205422636U - From irritating formula float collar - Google Patents
From irritating formula float collar Download PDFInfo
- Publication number
- CN205422636U CN205422636U CN201620144809.6U CN201620144809U CN205422636U CN 205422636 U CN205422636 U CN 205422636U CN 201620144809 U CN201620144809 U CN 201620144809U CN 205422636 U CN205422636 U CN 205422636U
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- China
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- spool
- inner seat
- basket
- decorated basket
- gaily decorated
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Abstract
The utility model discloses a from irritating formula float collar relates to oil field well cementation facility technical field, casing, interior disk seat, case and the basket of flowers that can link to each other with the sleeve pipe including both ends, interior disk seat is fixed at shells inner wall, and the basket of flowers that has the mesh links to each other with interior disk seat, is equipped with the clearance between the basket of flowers and shells inner wall, and the case runs through basket of flowers middle part, just links to each other with the basket of flowers through elastic element and spacing component, disk seat middle part through -hole in the biggest outside diameter of case is greater than. The check valve function is realized to case in the casing under the effect of elastic element and spacing component, at the case in -process, liquid in the well drilling also on the accessible basket of flowers wall mesh to get into the top cover intraductal, make sleeve pipe internal and external pressure balance, when decurrent pressure, the case is down, makes spacing component drop, and elastic element resets, with interior valve seat hole shutoff, truns into ordinary float collar to. The utility model discloses simple structure is compact, can realize the automatic grout of case in -process, is showing and is reducing the impact force that acts on the well drilling bottom.
Description
Technical field
This utility model relates to reinforcing oil well facility technology field, particularly relates to a kind of self-filling-type float collar.
Background technology
At present, in the well cementing process of oil exploitation, float collar is a crucial adnexa of well cementing process, float collar is arranged on more than the guide shoe bottom bunch tube, its effect is used to control the lowered position of plug, guiding sleeve enters well smoothly, buoyancy suffered by tubing string when adjusting setting of casing, stops annular space cement mortar to backflow in sleeve pipe during well cementation.Currently, along with the development of technical matters and improving constantly of well cementation demand, having higher requirement float collar, the sealing structure of float collar is once damaged and would not be realized effectively sealing, and affects cementing quality, even causes serious well cementation accident.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of simple and compact for structure, the self-filling-type float collar of automatic grouting function can be realized.
For solving above-mentioned technical problem, technical solution adopted in the utility model is:
A kind of self-filling-type float collar, housing, inner seat, spool and the gaily decorated basket being connected with sleeve pipe including two ends, described inner seat is fixed on inner walls, the meshed gaily decorated basket is carried to be connected with inner seat, being provided with gap between the gaily decorated basket and inner walls, spool is run through in the middle part of the gaily decorated basket and is connected with the gaily decorated basket with limit element by flexible member, and described spool maximum outside diameter is more than inner seat middle through-hole, by limit element by spool and inner seat clamping, spool is made to coordinate with inner seat through hole by flexible member.
Preferably, described inner seat for threadeding, is additionally provided with sealing ring with housing between inner seat and housing.
Preferably, the through hole lower end of described inner seat is taper hole, described spool upper end be hemispherical, lower end be cylinder, described flexible member is spring, spring be arranged on gaily decorated basket inner chamber and be sleeved on spool bottom cylinder on.
Preferably, described limit element is steel ball, and described spool bottom and gaily decorated basket matching part are equipped with draw-in groove, and described steel ball is arranged in the draw-in groove of spool and the gaily decorated basket.
Preferably, described inner seat is fixed by screwed connection jackscrew with the gaily decorated basket.
Preferably, described housing upper end is provided with female thread, lower end is provided with external screw thread.
Use and have the beneficial effects that produced by technique scheme: by installing spool and inner seat in housing, spool realizes non-return valve function under the flexible member effect with limit element, during setting of casing, liquid in drilling well also can be entered in upper square casing by mesh on gaily decorated basket wall, makes sleeve pipe internal and external pressure balance；When there being downward pressure, spool is descending, makes limit element come off, spring element returns, is blocked by inner seat through hole, transfers common float collar to.This utility model is simple and compact for structure, safe and reliable, significantly reduce cased cost, significantly improve speed and safety that sleeve pipe is gone into the well, automatic grouting during utilizing this utility model can realize setting of casing, significantly reduces the impulsive force acting on drilling well bottom.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment；
In figure: 1-housing, 2-inner seat, 3-spool, the 4-gaily decorated basket, 5-flexible member, 6-limit element, 7-through hole, 8-sealing ring, 9-jackscrew.
Detailed description of the invention
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
A kind of self-filling-type float collar as shown in Figure 1, housing 1, inner seat 2, spool 3 and the gaily decorated basket 4 being connected with sleeve pipe including two ends, described inner seat 2 is fixed on housing 1 inwall, the meshed gaily decorated basket 4 is carried to be connected with inner seat 2, it is provided with gap between the gaily decorated basket 4 and housing 1 inwall, spool 3 is run through in the middle part of the gaily decorated basket 4 and is connected with the gaily decorated basket 4 with limit element 6 by flexible member 5, the maximum outside diameter of described spool 3 is more than inner seat 2 middle through-hole 7, by limit element 6 by spool 3 and inner seat 2 clamping, spool 3 is made to coordinate with inner seat 2 through hole 7 by flexible member 5.
Loading and unloading for convenience, described inner seat 2 for threadeding, is additionally provided with sealing ring 8 to strengthen sealing with housing 1 between inner seat 2 and housing 1, sealing ring 8 can be selected for O RunddichtringO.
As a kind of preferred structure, through hole 7 lower end of described inner seat 2 is taper hole, described spool 3 upper end be hemispherical, lower end be cylinder, described flexible member 5 is spring, spring be arranged on the gaily decorated basket 4 inner chamber and be sleeved on spool 3 bottom cylinder on.Described limit element 6 is steel ball, and described spool 3 bottom and the gaily decorated basket 4 matching part are equipped with draw-in groove, and described steel ball is arranged in the draw-in groove of spool 3 and the gaily decorated basket 4.
Wherein, described inner seat 2 is connected by jackscrew 9 is fixing with the gaily decorated basket 4.Described housing 1 upper end is provided with female thread, lower end is provided with external screw thread, threadeds with upper and lower sleeve pipe respectively in housing 1 two ends.
Operation principle of the present utility model is as follows: utilize spool 3 and inner seat 2 coordinates the effect realizing ball-and-seat, thus realizes automatic grouting function.Arranging steel ball in spool 3 with the draw-in groove of the gaily decorated basket 4 and carry out spacing to spool 3, utilize steel ball to block spool 3, make spring not reset, it is penetrating for keeping housing cavity top and the bottom；Since Ru Ci, this utility model installs sleeve pipe up and down during going into the well, and the liquid in well also can be entered in the sleeve pipe above housing 1 by mesh on the gaily decorated basket 4 wall, makes sleeve pipe internal and external pressure balance.When there being downward pressure, spool 3 is descending, makes steel ball come off, spring return function, under the action of the spring, its top hemispherical contacts spool 3 with the lower end taper hole of inner seat 2, inner seat 2 through hole 7 is blocked, housing 1 inner chamber top and the bottom are kept apart, can be used as common float collar and use.
In sum, this utility model is simple and compact for structure, safe and reliable, significantly reduce cased cost, by installing spool 3 and inner seat 2 in housing 1, spool 3 realizes non-return valve function under the effect of flexible member 5 and limit element 6, the automatic grouting during utilizing this utility model can realize setting of casing, significantly reduce the impulsive force acting on drilling well bottom, significantly improve speed and safety that sleeve pipe is gone into the well.
Claims (6)
1. a self-filling-type float collar, it is characterized in that: include the housing (1) that two ends can be connected with sleeve pipe, inner seat (2), spool (3) and the gaily decorated basket (4), described inner seat (2) is fixed on housing (1) inwall, the meshed gaily decorated basket (4) is carried to be connected with inner seat (2), it is provided with gap between the gaily decorated basket (4) and housing (1) inwall, spool (3) runs through the gaily decorated basket (4) middle part, and be connected with the gaily decorated basket (4) with limit element (6) by flexible member (5), the maximum outside diameter of described spool (3) is more than inner seat (2) middle through-hole (7), by limit element (6) by spool (3) and inner seat (2) clamping, spool (3) is made to coordinate with inner seat (2) through hole (7) by flexible member (5).
Self-filling-type float collar the most according to claim 1, it is characterised in that: described inner seat (2) for threadeding, is additionally provided with sealing ring (8) with housing (1) between inner seat (2) and housing (1).
Self-filling-type float collar the most according to claim 1, it is characterized in that: through hole (7) lower end of described inner seat (2) is taper hole, described spool (3) upper end be hemispherical, lower end be cylinder, described flexible member (5) is spring, spring be arranged on the gaily decorated basket (4) inner chamber and be sleeved on spool (3) bottom cylinder on.
Self-filling-type float collar the most according to claim 1, it is characterised in that: described limit element (6) is steel ball, and described spool (3) bottom and the gaily decorated basket (4) matching part are equipped with draw-in groove, and described steel ball is arranged in the draw-in groove of spool (3) and the gaily decorated basket (4).
Self-filling-type float collar the most according to claim 1, it is characterised in that: described inner seat (2) threaded with the gaily decorated basket (4) jackscrew (9) fix.
Self-filling-type float collar the most according to claim 1, it is characterised in that: described housing (1) upper end is provided with female thread, lower end is provided with external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620144809.6U CN205422636U (en) | 2016-02-26 | 2016-02-26 | From irritating formula float collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620144809.6U CN205422636U (en) | 2016-02-26 | 2016-02-26 | From irritating formula float collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205422636U true CN205422636U (en) | 2016-08-03 |
Family
ID=56545290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620144809.6U Active CN205422636U (en) | 2016-02-26 | 2016-02-26 | From irritating formula float collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205422636U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842340A (en) * | 2016-09-20 | 2018-03-27 | 中石化石油工程技术服务有限公司 | A kind of cement injecting well shaft fixing technology and sleeve pipe dock cement injecting device |
| CN110359878A (en) * | 2019-07-22 | 2019-10-22 | 新疆再兴科苑石油科技有限公司 | Two way seal float collar assembly |
-
2016
- 2016-02-26 CN CN201620144809.6U patent/CN205422636U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842340A (en) * | 2016-09-20 | 2018-03-27 | 中石化石油工程技术服务有限公司 | A kind of cement injecting well shaft fixing technology and sleeve pipe dock cement injecting device |
| CN107842340B (en) * | 2016-09-20 | 2024-02-20 | 中石化石油工程技术服务有限公司 | Ash injection well cementation process and sleeve butt joint ash injection device |
| CN110359878A (en) * | 2019-07-22 | 2019-10-22 | 新疆再兴科苑石油科技有限公司 | Two way seal float collar assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |