CN203488143U - Automatic mud grouting float-collar float shoe - Google Patents
Automatic mud grouting float-collar float shoe Download PDFInfo
- Publication number
- CN203488143U CN203488143U CN201320620223.9U CN201320620223U CN203488143U CN 203488143 U CN203488143 U CN 203488143U CN 201320620223 U CN201320620223 U CN 201320620223U CN 203488143 U CN203488143 U CN 203488143U
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- CN
- China
- Prior art keywords
- float
- collar
- overcoat
- grouting
- auto
- 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 - Lifetime
Links
- 239000004568 cement Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000005192 partition Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
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Abstract
The utility model discloses an automatic mud grouting float-collar float shoe, and belongs to the technical field of well cementing tools, wherein the automatic mud grouting float-collar float shoe is good in drillability and sealing performance, convenient to connect and light in weight. The automatic mud grouting float-collar float shoe comprises a cylindrical float-collar float shoe outer cover (1), the inner wall of the upper portion of the outer cover is provided with a thread, a check valve base (2) is installed on the thread, a conical open guide pipe (19) is arranged in an inner hole of the check valve base (2), a check valve (13) is installed below the conical open guide pipe (19), a floating ball base (18) provided with a floating ball (11) is installed below the check valve base (2), and a limit partition board (10) is installed below the floating ball base (18). When the automatic mud grouting float-collar float shoe is used for the well cementing operation, mud in a well can enter a casing pipe automatically, and buoyancy of the casing pipe is reduced. After the well cementing operation is completed, sealing can be achieved automatically, and cement paste is prevented from flowing back. The automatic mud grouting float-collar float shoe is reasonable in structure, reliable in performance, capable of improving working efficiency and high in well cementing quality.
Description
Technical field
The utility model relates to cementing tool technical field, and particularly a kind of oil, the natural gas well overlap effective auto-grouting float collar float plug.
Background technology
Float collar, float shoe are the special parts of oil drilling, and Main Function is that guide sleeves tubing string is gone into the well smoothly, and the buoyancy that adjusting sleeve tubing string is suffered, reduces lower well resistance, reaches the object that alleviates boring tower load.Under sleeve pipe, after design attitude, by cement injection under float collar, float shoe through hole, cement the well.In setting of casing process, sleeve pipe can produce buoyancy lower after certain depth, and cased speed is reduced gradually, so must pour in time mud in sleeve pipe, reduces sleeve pipe buoyancy.At present, existing float collar, float shoe exist and install and use the shortcomings such as inconvenience, drillability and sealing be poor.
Utility model content
In order to overcome above-mentioned defect, the technical problems to be solved in the utility model is: a kind of drillability and good airproof performance, easy to connect, lightweight auto-grouting float collar float plug are provided.
The utility model is that the technical scheme that solves the problems of the technologies described above employing is: a kind of auto-grouting float collar float plug, the overcoat that comprises cylindric float collar float plug, the inwall on overcoat top is provided with screw thread, non-return valve seat is installed on screw thread, it is characterized in that: in non-return valve seat endoporus, be provided with cone shaped opening diversion tube, diversion tube below is provided with check valve; Non-return valve seat below is for being equipped with the ball float seat of ball float, and current limliting dividing plate is equipped with in ball float seat below.
Round cap is equipped with in float shoe overcoat lower end, and float collar overcoat lower end is casing threads.
Described ball float seat is sealed on float collar, float shoe outer casing inner wall by cement is affixed.
The beneficial effects of the utility model are: while carrying out well cementing operation, the mud in well can enter sleeve pipe automatically, reduce sleeve pipe buoyancy.Complete after well cementation, can automatically form sealing again, prevent that cement paste from flowing backwards, it is rational in infrastructure, and dependable performance can improve work efficiency, and cementing quality is high.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, illustrate auto-grouting float collar float plug described in the utility model.
In figure: Fig. 1 is float collar structural representation;
Fig. 2 is float shoe structural representation.
In figure: 1, float collar, float shoe overcoat, 2, non-return valve seat, 3, spacer, 4, jump ring, 5, flap valve lock pin, 6, O RunddichtringO, 7, lock pin inner sleeve, 8, lock pin overcoat, 9, bottom cover, 10, current limliting dividing plate, 11, ball float, 12, pressure limiting pin, 13, check valve, 14, valve return spring, 15, valve pin, 16, cement, 17, justify cap, 18, ball float seat, 19, diversion tube.
The specific embodiment
As shown in Figure 1-2, a kind of auto-grouting float collar float plug, the overcoat 1 that comprises cylindric float collar float plug, the inwall on overcoat top is provided with screw thread, non-return valve seat 2 is installed on screw thread, it is characterized in that: in non-return valve seat 2 endoporus, be provided with cone shaped opening diversion tube 19, diversion tube 19 belows are provided with check valve 13; Non-return valve seat 2 belows are the ball float seat 18 that ball float 11 is housed, and current limliting dividing plate 10 is equipped with in ball float seat 18 belows.
Described ball float seat 18 passes through cement fixing seal on float collar, float shoe overcoat 1 inwall.
All there are rubber ring and cement seal in pressure-bearing position.
Float shoe is connected on casing string end, and float collar is connected on apart from the slightly top position of casing string end.
There are 6 sealings of O RunddichtringO float collar, float shoe overcoat 1 and non-return valve seat 2 junctions, and non-return valve seat 2 links together check valve 13, valve return spring 14 by valve pin 15.Non-return valve seat 2 lower ends and spacer 3 are threaded connection, and spacer 3 lower ends and lock pin overcoat 8, bottom cover 9 are threaded connection.Lock pin inner sleeve 7 is connected by pressure limiting pin 12 with flap valve lock pin 5; Lock pin inner sleeve 7 is connected by jump ring 4 with lock pin overcoat 8, and by O RunddichtringO 6, seals between lock pin inner sleeve 7 and lock pin overcoat 8, and current limliting dividing plate 10 is contained on ball float seat 18 belows, bottom cover 9 and lock pin overcoat 8, and ball float 11 can move freely at inner chamber.Float shoe overcoat 1 with by screw thread with circle cap 17 be connected.Between float collar, float shoe overcoat 1 and inner each parts, by cement 16, seal.
Claims (8)
1. an auto-grouting float collar float plug, the overcoat (1) that comprises cylindric float collar float plug, the inwall on overcoat top is provided with screw thread, non-return valve seat (2) is installed on screw thread, it is characterized in that: in non-return valve seat (2) endoporus, be provided with cone shaped opening diversion tube (19), diversion tube (19) below is provided with check valve (13); Non-return valve seat (2) below is for being equipped with the ball float seat (18) of ball float (11), and current limliting dividing plate (10) is equipped with in ball float seat (18) below.
2. auto-grouting float collar float plug according to claim 1, is characterized in that: round cap (17) is equipped with in described float shoe overcoat (1) lower end, and float collar overcoat (1) lower end is casing threads.
3. auto-grouting float collar float plug according to claim 1, is characterized in that: described ball float seat (18) passes through cement fixing seal on float collar, float shoe overcoat (1) inwall.
4. auto-grouting float collar float plug according to claim 1, is characterized in that: there is O RunddichtringO (6) sealing described float collar, float shoe overcoat (1) and non-return valve seat (2) junction.
5. auto-grouting float collar float plug according to claim 1, is characterized in that: described non-return valve seat (2) links together check valve (13), valve return spring (14) by valve pin (15).
6. auto-grouting float collar float plug according to claim 1, is characterized in that: described non-return valve seat (2) lower end and spacer (3) are threaded connection, and spacer (3) lower end and lock pin overcoat (8), bottom cover (9) are threaded connection.
7. auto-grouting float collar float plug according to claim 1, is characterized in that: described float shoe overcoat (1) with by screw thread, be connected with circle cap (17).
8. auto-grouting float collar float plug according to claim 1, is characterized in that: between described float collar, float shoe overcoat (1) and inner each parts, by cement (16), seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620223.9U CN203488143U (en) | 2013-10-09 | 2013-10-09 | Automatic mud grouting float-collar float shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320620223.9U CN203488143U (en) | 2013-10-09 | 2013-10-09 | Automatic mud grouting float-collar float shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488143U true CN203488143U (en) | 2014-03-19 |
Family
ID=50258982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320620223.9U Expired - Lifetime CN203488143U (en) | 2013-10-09 | 2013-10-09 | Automatic mud grouting float-collar float shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203488143U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696968A (en) * | 2015-08-21 | 2016-06-22 | 刘书京 | Automatic grouting float collar and float shoe |
| CN110043223A (en) * | 2019-05-15 | 2019-07-23 | 常熟市石油固井工具有限公司 | A kind of grouting type variable float collar float shoe device certainly |
-
2013
- 2013-10-09 CN CN201320620223.9U patent/CN203488143U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696968A (en) * | 2015-08-21 | 2016-06-22 | 刘书京 | Automatic grouting float collar and float shoe |
| CN110043223A (en) * | 2019-05-15 | 2019-07-23 | 常熟市石油固井工具有限公司 | A kind of grouting type variable float collar float shoe device certainly |
| CN110043223B (en) * | 2019-05-15 | 2024-03-19 | 常熟市石油固井工具有限公司 | Self-grouting variable float collar float shoe device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171116 Address after: 053300 Xin Kai street, Wuqiang Town, Wuqiang County, Hengshui, Hebei Patentee after: JING HONG OIL DRILLING ENGINEERING TECHNOLOGY CO.,LTD. Address before: No. 1450 Shengdong Road, Hengshui, Hebei Province Patentee before: Liu Shujing |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |
|
| CX01 | Expiry of patent term |