CN204283321U - Spring-go type casing float collar - Google Patents
Spring-go type casing float collar Download PDFInfo
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- CN204283321U CN204283321U CN201420642985.3U CN201420642985U CN204283321U CN 204283321 U CN204283321 U CN 204283321U CN 201420642985 U CN201420642985 U CN 201420642985U CN 204283321 U CN204283321 U CN 204283321U
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Abstract
The utility model relates to a kind of spring-go type casing float collar, belongs to oil drilling industry casing and cementing middle sleeve float collar technical field.For solving the problem that in prior art, spring floating hoop reliability is low, a kind of spring-go type casing float collar being provided, comprising: housing, valve seat, valve ball, cage, spring, ball holder; Housing is tubular structure, and two ends are provided with connecting thread; Cage is barrel-like structure, is provided with interior shoulder and has central through hole bottom it, and its sidewall has groove or radial direction through hole, and its top is connected with valve seat bottom; In cage cavity bottom on shoulder, mounting spring, ball holder and valve ball successively from the bottom to top; Valve ball is spherical shape structure, can rotate arbitrarily; Valve seat is fixed in the cavity of valve ball upper body, and its center has through hole, and inner conical surface is established in through hole bottom; The utility model has that reset force is strong, resistance to erosion, shock resistance, sealing reliability high, can effectively prevent cement paste from blowing back into sleeve pipe, fully can meet the technical need of well cementing operation.
Description
Technical field
The utility model relates to a kind of spring-go type casing float collar, belongs to oil drilling industry casing and cementing middle sleeve float collar technical field.
Background technology
In the cementing operation operation process of current oil drilling, in order to strengthen the sealing effectiveness of float collar, usually all can use spring floating hoop and flowing backwards to prevent cement paste.Patent ZL200320106685.5 discloses a kind of spring floating hoop, primarily of float collar body, seal receptacle, ball sealer, spring and spring retainer composition, relies on spring that ball sealer is resetted setting with seal receptacle during work; Such spring floating hoop mainly has the following disadvantages: one is can not rotate arbitrarily because ball sealer can only move up and down, so setting time ball sealer on seal position be unique, and immobilize, this position is very easily damaged through the long-time erosion of fluid and causes seal failure; Two is ball sealer strong impaction spring retainers under fluid impact, easily causes its damage come off and cause seal failure; Three is that spring warp is overly compressed easy fatigue damage for a long time repeatedly, and flexibility missing or reduction cause seal failure.And the result of float collar disabler forms cement plug by directly causing cement paste to blow back in sleeve pipe, whole well time serious, even can be caused to scrap.Therefore, the functional reliability of existing spring floating hoop fully can not meet the technical need of cementing operation operation.
Summary of the invention
The purpose of this utility model is exactly to solve the problem that in prior art, spring floating hoop sealing function reliability is low, provides a kind of spring-go type casing float collar, by improving the reliability of float collar sealing function, guarantees the technical need fully meeting cementing operation operation.
The technical solution of the utility model is: provide a kind of spring-go type casing float collar, comprises housing, valve seat, valve ball, cage, spring, ball holder; Housing is tubular structure, and upper/lower terminal is provided with connecting thread; Cage is barrel-like structure, is provided with interior shoulder and has central through hole bottom it, and its sidewall has groove or radial direction through hole, and its top is connected with valve seat bottom; In cage cavity bottom on shoulder, mounting spring, ball holder and valve ball successively from the bottom to top; Valve ball is spherical shape structure, can rotate arbitrarily; Valve seat is fixed in the cavity of valve ball upper body, and its center has through hole, and inner conical surface is established in through hole bottom.
Be connected by screw thread between valve seat with housing, be provided with sealing ring therebetween.
Be connected by screw thread between cage with valve seat, be provided with pin therebetween.
Qiu Tuo center has through hole, and its upper surface is inner conical surface structure or the concave structure corresponding with valve ball shape.
Quantity >=4 of cage sidewall groove or through hole.
Central through hole is had bottom cage.
Spring can be cylindrical-shaped structure or cone-shaped structure, its maximum outside diameter close to and be less than cage sidewall internal diameter.
Compared with prior art, the utility model can prevent from valve ball seal from being damaged the sealing function caused because washing away losing efficacy, when can prevent again float collar from working, internal activity parts strong impaction adjacent component causes it to damage the sealing function that causes losing efficacy, and the sealing function that can also prevent from spring from damaging because of excess compression causing lost efficacy; Have the advantage of float-ball type float collar and spring floating hoop concurrently, have that reset force is strong, resistance to erosion, shock resistance, sealing reliability high, even if spring failure, still can complete setting, effectively can prevent cement paste from blowing back into sleeve pipe and cause the generation staying cement plug accident, fully can meet the technical need of cementing operation operation, be widely used in the well cementing operation of all kinds of prospect pit, horizontal well, deep-well, Holes of Complicated Wells.
Accompanying drawing explanation
Fig. 1: spring-go type casing float collar structure chart;
Fig. 2: spring-go type casing float collar sectional view;
In figure: 1-housing; 2-valve seat; 3-valve ball; 4-cage; 5-spring; The holder of 6-ball; 7-pin; 8-sealing ring.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described further:
As shown in Figure 1 and Figure 2, the utility model comprises housing 1, valve seat 2, valve ball 3, cage 4, spring 5, ball holder 6; Housing 1 is tubular structure, and upper/lower terminal is provided with connecting thread; Cage 4 is barrel-like structure, is provided with interior shoulder and has central through hole bottom it, and its sidewall has groove or radial direction through hole, and its top is connected with valve seat 2 bottom; In cage 4 cavity bottom on shoulder, mounting spring 5, ball holder 6 and valve ball 3 successively from the bottom to top; Valve ball 3 is spherical shape structure, can rotate arbitrarily; Valve seat 2 is fixed in the cavity of valve ball 3 upper body 1, and its center has through hole, and inner conical surface is established in through hole bottom.
Described ball holder 6 is loop configuration, and its upper surface is inner conical surface or the cambered surface corresponding with valve ball 3 shape.
Described valve seat 2 is connected by screw thread with between housing 1, is provided with sealing ring 8 therebetween.
Described cage 4 is connected by screw thread with between valve seat 2, is provided with pin 7 therebetween.
Quantity >=4 of described cage 4 sidewall groove or radial direction through hole.
Described spring 5 can be cylindrical-shaped structure or cone-shaped structure, its maximum outside diameter close to and be less than cage 4 sidewall internal diameter.
When using the utility model, the internal thread rotation on housing 1 top is connected to casing string bottom, then casing job is carried out, when carrying out circulation of drilling fluid and cementing job after having descended sleeve pipe, liquid stream promotes valve ball 3, ball holder 6 moves down, spring 5 is compressed, and now fluid course can be set up in housing 1 inside; Due to spring 5 maximum outside diameter close to and be less than cage 4 sidewall internal diameter, so its elastic force can be established larger, can prevent from being in use overly compressed and damaging; Due to valve ball 3 and ball holder 6 lighter in weight, can prevent from causing more greatly it to damage to shock dynamics bottom cage 4 in use; Because valve ball 3 can rotate arbitrarily under liquid flow impact between valve seat 2 and ball holder 6, therefore setting seal can spread all over whole valve ball 3 surface at random, so not easily damaged by erosion; In addition, even if spring 5 accidental damage under special circumstances, valve ball 3 still can backflow promote under realize setting with valve seat 2, guarantee that float collar functional reliability improves greatly thus.
Claims (7)
1. spring-go type casing float collar, comprise housing (1), valve seat (2), valve ball (3), cage (4), spring (5), ball holder (6), it is characterized in that: housing (1) is tubular structure, and upper/lower terminal is provided with connecting thread; Cage (4) is barrel-like structure, is provided with interior shoulder and has central through hole bottom it, and its sidewall has groove or radial direction through hole, and its top is connected with valve seat (2) bottom; On the interior shoulder of cage (4) cavity bottom, mounting spring (5), ball holder (6) and valve ball (3) successively from the bottom to top; Valve ball (3) is spherical shape structure, can rotate arbitrarily; Valve seat (2) is fixed in the cavity of valve ball (3) upper body (1), and its center has through hole, and inner conical surface is established in through hole bottom.
2. spring-go type casing float collar according to claim 1, is characterized in that: be connected by screw thread between valve seat (2) with housing (1), is provided with sealing ring (8) therebetween.
3. spring-go type casing float collar according to claim 1, is characterized in that: be connected by screw thread between cage (4) with valve seat (2), is provided with pin (7) therebetween.
4. spring-go type casing float collar according to claim 1, is characterized in that: ball holder (6) center has through hole, and its upper surface is inner conical surface structure or the concave structure corresponding with valve ball (3) shape.
5. spring-go type casing float collar according to claim 1, is characterized in that: quantity >=4 of cage (4) sidewall groove or through hole.
6. spring-go type casing float collar according to claim 1, is characterized in that: cage (4) bottom has central through hole.
7. spring-go type casing float collar according to claim 1, is characterized in that: spring (5) can be cylindrical-shaped structure or cone-shaped structure, its maximum outside diameter close to and be less than cage (4) sidewall internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642985.3U CN204283321U (en) | 2014-10-31 | 2014-10-31 | Spring-go type casing float collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642985.3U CN204283321U (en) | 2014-10-31 | 2014-10-31 | Spring-go type casing float collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283321U true CN204283321U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420642985.3U Active CN204283321U (en) | 2014-10-31 | 2014-10-31 | Spring-go type casing float collar |
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| CN (1) | CN204283321U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571318A (en) * | 2017-03-09 | 2018-09-25 | 中国石油化工股份有限公司 | collar locator |
| WO2019178858A1 (en) * | 2018-03-23 | 2019-09-26 | 深圳瀚飞科技开发有限公司 | Side wall fixing apparatus applied in drilling system |
| CN112253045A (en) * | 2020-12-08 | 2021-01-22 | 中国石油天然气集团有限公司 | Sliding sleeve type impacting seat |
| CN114991705A (en) * | 2022-07-28 | 2022-09-02 | 东营百利源信息技术有限公司 | Anti-blocking erosion-resistant floating hoop for oil field well cementation |
| CN116006122A (en) * | 2023-03-27 | 2023-04-25 | 山东胜油固井工程技术有限公司 | Composite multifunctional casing floating collar device for well cementation and use method |
-
2014
- 2014-10-31 CN CN201420642985.3U patent/CN204283321U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571318A (en) * | 2017-03-09 | 2018-09-25 | 中国石油化工股份有限公司 | collar locator |
| CN108571318B (en) * | 2017-03-09 | 2021-04-20 | 中国石油化工股份有限公司 | Coupling positioner |
| WO2019178858A1 (en) * | 2018-03-23 | 2019-09-26 | 深圳瀚飞科技开发有限公司 | Side wall fixing apparatus applied in drilling system |
| CN112253045A (en) * | 2020-12-08 | 2021-01-22 | 中国石油天然气集团有限公司 | Sliding sleeve type impacting seat |
| CN114991705A (en) * | 2022-07-28 | 2022-09-02 | 东营百利源信息技术有限公司 | Anti-blocking erosion-resistant floating hoop for oil field well cementation |
| CN114991705B (en) * | 2022-07-28 | 2022-11-08 | 东营中达石油设备有限公司 | Anti-blocking erosion-resistant floating hoop for oil field well cementation |
| CN116006122A (en) * | 2023-03-27 | 2023-04-25 | 山东胜油固井工程技术有限公司 | Composite multifunctional casing floating collar device for well cementation and use method |
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