CN203531839U - Automatic grouting float shoe - Google Patents
Automatic grouting float shoe Download PDFInfo
- Publication number
- CN203531839U CN203531839U CN201320609386.7U CN201320609386U CN203531839U CN 203531839 U CN203531839 U CN 203531839U CN 201320609386 U CN201320609386 U CN 201320609386U CN 203531839 U CN203531839 U CN 203531839U
- Authority
- CN
- China
- Prior art keywords
- float shoe
- valve head
- shoe body
- spoiler
- circular cone
- 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
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to an automatic grouting float shoe. The automatic grouting float shoe comprises a float shoe body, wherein the upper end of the float shoe body is provided with threads and connected with an oil casing pipe, the lower end of the float shoe body is provided with a guiding shoe, a spring base is arranged inside the lower end of the float shoe body, a spoilt is arranged inside the upper end of the float shoe body, a sliding rod is sleeved with a central hole of the spring base, the upper end of the sliding rod is provided with a conical valve head, a spring is arranged between the conical valve head and the spring base, the sliding rod is sleeved with the spring, and the spring base is provided with an axial liquid flowing hole. The upper end of the spring is provided with a rubber supporting cushion, the sliding rod is sleeved with the rubber supporting cushion which is in a line shape, the two ends of the rubber supporting cushion are respectively provided with a ball, and the balls are located between the conical valve head and a conical hole of the spoilt, so that a gap is formed between the conical valve head and the conical hole. The automatic grouting float shoe is simple in structure and convenient to install, when the casing pipe is placed down, slurry in a well flows into the casing pipe through the gap, automatic slurry grouting is achieved, the slurry is calculated as soon as a pump is started, the two ends of the rubber supporting cushion fall down, the position between the conical valve head and the spoiler is sealed, concrete slurry backflow accidents can not occur, construction hazards are eliminated, and construction is safe and reliable.
Description
Technical field
The utility model relates to a kind of automatic grouting float shoe, belongs to oil gas well cementing operation technical field of tools.
Background technology
Float shoe is the instrument in oil gas well cementing operation process middle sleeve bottom, and float shoe, except in order to realize " bruising ", stops plug to continue outside descending effect, and also having an effect is exactly " back pressure valve ", stops cover extratubal fluid to enter in sleeve pipe.During old-fashioned float shoe back pressure valve setting of casing, in order to make to be full of mud in sleeve pipe, need to be from sleeve opening artificial on rig floor, this not only increases workload, also affects setting of casing speed, if grouting time is long, not in time, also easily there is the sticky card accident of sleeve pipe in moving casing.In order to address this problem, colleagues design a lot of ways, develop the device of multiple automatic grouting, as perforated baffle (or web plate) formula, by-pass pipe, cut off homing position type etc., the object of these devices is to want to reach in setting of casing process, to allow mud in well automatically enter in sleeve pipe with suitable speed, instantly after complete sleeve pipe, allows float shoe play the sealing function of " back pressure valve " again.But because these apparatus structures are complicated, technological requirement is high, manufacturing cost is high, the probability of success is low, have as by-pass pipe, cut off homing position type, device is to rely on " bruising " (when plug arrives float shoe), just can make float shoe sealing (recovering back pressure valve function).(as the perforated baffle formula) having is by differential pressure action, perforated baffle to be washed out and fall in lower parts casing pipe or shaft bottom during turn on pump after lower complete sleeve pipe, but these metal porous baffle plates fall into bottom, can produce certain hidden danger.
Utility model content
For above-mentioned defect, it is a kind of simple in structure that the purpose of this utility model is to provide, and low cost of manufacture is easy for installation, and cement paste refluence accident can not occur good airproof performance, eliminates construction hidden danger, safe and reliable a kind of automatic grouting float shoe.
The technical scheme that the utility model adopts is for this reason:
Comprise float shoe body, described float shoe body upper end is provided with screw thread and is connected with petroleum casing pipe, lower end is provided with guide shoe, float shoe body is installed with spring base in lower end, float shoe body is provided with spoiler in upper end, the centre bore inner sleeve of spring base has slide bar, slide bar upper end is provided with circular cone valve head, between circular cone valve head and spring base, be provided with spring housing on slide bar, in spoiler lower end, be provided with conical bore and circular cone valve head matches, spring base is provided with axial flowbore, spring upper end is provided with the de-cushion cover of rubber on slide bar, the de-pad of described rubber is yi word pattern, two ends are equipped with spheroid, spheroid is between circular cone valve head and the conical bore of spoiler, make to form gap between circular cone valve head and the conical bore of spoiler.
Described spoiler and float shoe body are provided with O RunddichtringO between radially.
Described guide shoe upper end is by being connected in screw thread in float shoe body lower end, and float shoe body lower end circumference is provided with screw guide shoe is fixed with it.
Described guide shoe is provided with liquid flow hole in the radial direction, and float shoe heart portion is hollow.
Described circular cone valve head upper surface is provided with rubber layer.
The utility model has the advantages that:
The utility model is simple in structure, and low cost of manufacture is easy for installation, at setting of casing, enter after well, because the de-pad of rubber two ends are provided with spheroid, between circular cone valve head and the conical bore of spoiler, form gap, the mud in well enters in sleeve pipe with certain speed, thereby realizes automatic grouting function; After setting of casing finishes, during turn on pump circulating mud, the de-pad of rubber two ends will split away off, and recover the sealing function between circular cone valve head and spoiler, and cement paste refluence accident can not occur, and eliminate construction hidden danger, and construction safety is reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the expanded view of the de-pad of rubber in Fig. 1.
In figure, 1 is float shoe body, the 2nd, guide shoe, the 3rd, spring base, the 4th, spoiler, the 5th, slide bar, the 6th, circular cone valve head, the 7th, spring, the 8th, axial infusion hole, the 9th, the de-pad of rubber, the 10th, O RunddichtringO, the 11st, screw, the 12nd, liquid flow hole, the 13rd, rubber layer.
The specific embodiment
A kind of automatic grouting float shoe, comprise float shoe body 1, described float shoe body 1 upper end is provided with screw thread and is connected with petroleum casing pipe, lower end is provided with guide shoe 2, float shoe body is installed with spring base 3 in 1 lower end, float shoe body is provided with spoiler 4 in 1 upper end, the centre bore inner sleeve of spring base 3 has slide bar 5, slide bar 5 upper ends are provided with circular cone valve head 6, between circular cone valve head 6 and spring base 3, being provided with spring 7 is enclosed within on slide bar 5, in spoiler 4 lower ends, be provided with conical bore and circular cone valve head 6 matches, spring base 3 is provided with axial flowbore 8, spring 7 upper ends are provided with the de-pad 9 of rubber and are enclosed within on slide bar 5, the de-pad 9 of described rubber is yi word pattern, two ends are equipped with spheroid, spheroid is between circular cone valve head 6 and the conical bore of spoiler 4, make to form gap between circular cone valve head 6 and the conical bore of spoiler 4.
Guide shoe described in the utility model 2 upper ends are by being connected in screw thread in float shoe body 1 lower end, and float shoe body 1 lower end circumference is provided with screw 11 guide shoe 2 is fixed with it.
Circular cone valve head 6 upper surfaces described in the utility model are provided with rubber layer 13.
Enter after well, because the de-pad of rubber 9 two ends are provided with spheroid, between circular cone valve head 6 and the conical bore of spoiler 4, form gap, the mud in well enters in sleeve pipe with certain speed, thereby realizes automatic grouting function; After setting of casing finishes, during turn on pump circulating mud, the de-pad of rubber 9 two ends will split away off, and recover the sealing function between circular cone valve head 6 and spoiler 4, and cement paste refluence accident can not occur, and eliminate construction hidden danger, and construction safety is reliable.
Claims (5)
1. an automatic grouting float shoe, it is characterized in that, comprise float shoe body, described float shoe body upper end is provided with screw thread and is connected with petroleum casing pipe, lower end is provided with guide shoe, float shoe body is installed with spring base in lower end, float shoe body is provided with spoiler in upper end, the centre bore inner sleeve of spring base has slide bar, slide bar upper end is provided with circular cone valve head, between circular cone valve head and spring base, be provided with spring housing on slide bar, in spoiler lower end, be provided with conical bore and circular cone valve head matches, spring base is provided with axial flowbore, spring upper end is provided with the de-cushion cover of rubber on slide bar, the de-pad of described rubber is yi word pattern, two ends are equipped with spheroid, spheroid is between circular cone valve head and the conical bore of spoiler, make to form gap between circular cone valve head and the conical bore of spoiler.
2. a kind of automatic grouting float shoe according to claim 1, is characterized in that, described spoiler and float shoe body are provided with O RunddichtringO between radially.
3. a kind of automatic grouting float shoe according to claim 1, is characterized in that, described guide shoe upper end is by being connected in screw thread in float shoe body lower end, and float shoe body lower end circumference is provided with screw guide shoe is fixed with it.
4. a kind of automatic grouting float shoe according to claim 1, is characterized in that, described guide shoe is provided with liquid flow hole in the radial direction, and float shoe heart portion is hollow.
5. a kind of automatic grouting float shoe according to claim 1, is characterized in that, described circular cone valve head upper surface is provided with rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609386.7U CN203531839U (en) | 2013-09-30 | 2013-09-30 | Automatic grouting float shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609386.7U CN203531839U (en) | 2013-09-30 | 2013-09-30 | Automatic grouting float shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531839U true CN203531839U (en) | 2014-04-09 |
Family
ID=50418061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320609386.7U Expired - Fee Related CN203531839U (en) | 2013-09-30 | 2013-09-30 | Automatic grouting float shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203531839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514831A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Manufacturing method of floating device |
| CN107859485A (en) * | 2017-11-21 | 2018-03-30 | 中国石油集团西部钻探工程有限公司 | Rotate freely float shoe assembly |
-
2013
- 2013-09-30 CN CN201320609386.7U patent/CN203531839U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514831A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Manufacturing method of floating device |
| CN107859485A (en) * | 2017-11-21 | 2018-03-30 | 中国石油集团西部钻探工程有限公司 | Rotate freely float shoe assembly |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20210930 |