CN205100896U - Formula case can be bored and coupling is floated - Google Patents
Formula case can be bored and coupling is floated Download PDFInfo
- Publication number
- CN205100896U CN205100896U CN201520847238.8U CN201520847238U CN205100896U CN 205100896 U CN205100896 U CN 205100896U CN 201520847238 U CN201520847238 U CN 201520847238U CN 205100896 U CN205100896 U CN 205100896U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- sleeve
- upper sliding
- urceolus
- drillable
- 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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Abstract
The utility model discloses a formula case can be bored and coupling is floated, its characterized in that: including the urceolus, go up sliding sleeve and lower sliding sleeve, the both ends of urceolus are equipped with the screw thread that matches with the sleeve pipe, go up the sliding sleeve and pass through the interior upper portion that the urceolus was fixed to the shear pin, it includes the up end to go up the sliding sleeve, lower sliding sleeve passes through gland nut and fixes the interior lower part at the urceolus, the interior upper portion of the lower extreme position of going up sliding sleeve under in, the lower extreme of going up the sliding sleeve is equipped with the bottom, the lower part circumference that goes up the sliding sleeve is equipped with liquid flow hole, upward be equipped with the combined seal ring A that the inner wall is sealed with the urceolus on the surface of sliding sleeve upper portion, the lower part surface of last sliding sleeve is equipped with and descends the combined seal ring B that the inner wall is sealed of sliding sleeve, be equipped with the snap ring on the lower part surface of last sliding sleeve, this snap ring lies in the lower part surface of sliding sleeve and descends between the upper portion of sliding sleeve, the diameter of going up the lower part surface of sliding sleeve is the same with the internal diameter on the interior upper portion of lower sliding sleeve, down the internal diameter of the interior lower part of sliding sleeve is 1.15 to 1.35 times of internal diameter on the interior upper portion of sliding sleeve down.
Description
Technical field
The utility model relates to a kind of for oil well operation instrument, particularly a kind of drillable setting of casing floating coupling.
Background technology
In the well cementing process of long horizontal sections well, sleeve pipe in casing job can against lower borehole wall forward slip after entering horizontal segment always, along with the increase of casing length, enters frictional force under gravity very large under sleeve pipe, heavy wear sleeve pipe, have impact on the cementing quality of horizontal segment.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of drillable setting of casing floating coupling, enters the frictional force between sleeve pipe and the borehole wall, the section of improving the standard cementing quality under this drillable setting of casing floating coupling can effectively reduce.
For solving the problems of the technologies described above, a kind of drillable setting of casing of the utility model floating coupling, comprise urceolus, upper sliding sleeve and low sleeve, the two ends of urceolus are provided with the screw thread matched with sleeve pipe, upper sliding sleeve is by the internal upper part of shear pin fixed outer cylinder, upper sliding sleeve comprises upper surface, low sleeve is fixed on bottom in urceolus by sealing nut, the lower end part of upper sliding sleeve is in the internal upper part of low sleeve, the lower end of upper sliding sleeve is provided with bottom, the bottom of upper sliding sleeve is circumferentially with liquid flow hole, upper sliding sleeve outer surface of upper is provided with the combined seal ring A with the inner wall sealing of urceolus, the lower external face of upper sliding sleeve is provided with the combined seal ring B with the inner wall sealing of low sleeve, the lower external face of upper sliding sleeve is provided with snap ring, this snap ring is between the lower external face and the internal upper part of low sleeve of upper sliding sleeve, the diameter of the lower external face of upper sliding sleeve is identical with the internal diameter of the internal upper part of low sleeve, the internal diameter of the interior bottom of low sleeve is 1.15 to 1.35 times of the internal diameter of the internal upper part of low sleeve.
Described shear pin is made up of aluminium alloys.
The upper surface that described upper sliding sleeve comprises is provided with current stabilization blind hole.
The surface of the outer bottom of described low sleeve is provided with combined seal ring.
The bottom circumference of described low sleeve is laid with and helps discharge orifice, leaves gap between the external surface of the bottom of described low sleeve and the inwall of described urceolus.
The lower end of described low sleeve is provided with antiturning pitch.
During use, the drillable setting of casing floating coupling assembled is arranged on the middle part design attitude of well cementing casing pipe string, sleeve pipe not drilling fluid charge below drillable setting of casing floating coupling, remains full of air, fills drilling fluid in sleeve pipe more than drillable setting of casing floating coupling.Because the sleeve pipe being positioned at below drillable setting of casing floating coupling is full of air, after this section of sleeve pipe enters the level section of entering, the gravity acting on the horizontal borehole wall alleviates, frictional force between sleeve pipe and the borehole wall reduces thereupon, the thrust that promotion sleeve pipe moves ahead also reduces, thus help the section of improving the standard cementing quality, arrive design attitude under being conducive to sleeve pipe.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of drillable setting of casing of the utility model floating coupling.
Detailed description of the invention
In Fig. 1, drillable setting of casing floating coupling, comprises urceolus 1, upper sliding sleeve 3 and low sleeve 6.The two ends of urceolus 1 are provided with the screw thread matched with sleeve pipe.Upper sliding sleeve 3 is by the internal upper part of shear pin 9 fixed outer cylinder 1, and upper sliding sleeve 3 comprises upper surface.Low sleeve 6 is fixed on bottom in urceolus 1 by sealing nut 8.The lower end part of upper sliding sleeve 3 is in the internal upper part of low sleeve 6, the lower end of upper sliding sleeve 3 is provided with bottom, the bottom of upper sliding sleeve 3 is circumferentially with liquid flow hole 13, upper sliding sleeve 3 outer surface of upper is provided with the combined seal ring A2 with the inner wall sealing of urceolus 1, the lower external face of upper sliding sleeve 3 is provided with the combined seal ring B4 with the inner wall sealing of low sleeve 6, the lower external face of upper sliding sleeve 3 is provided with snap ring 5, and this snap ring 5 is between the lower external face and the internal upper part of low sleeve 6 of upper sliding sleeve 3.The diameter of the lower external face of upper sliding sleeve 3 is identical with the internal diameter of the internal upper part of low sleeve 6, and the internal diameter of the interior bottom of low sleeve 6 is 1.15 to 1.35 times of the internal diameter of the internal upper part of low sleeve 6.
Described shear pin 9 is made up of aluminium alloys.In order to keep upper sliding sleeve 3 upper surface Compression Stability, the upper surface that described upper sliding sleeve 3 comprises is provided with current stabilization blind hole 12.The external surface of the bottom of described low sleeve 6 is provided with combined seal ring 7.For keeping liquid stream smooth and easy, the bottom circumference of described low sleeve 6 is laid with and helps discharge orifice 10, leaves gap between the external surface of the bottom of described low sleeve 6 and the inwall of described urceolus 1.The lower end of described low sleeve 6 is provided with antiturning pitch 11.
During use, the drillable setting of casing floating coupling assembled is arranged on the middle part design attitude of well cementing casing pipe string, sleeve pipe not drilling fluid charge below drillable setting of casing floating coupling, remains full of air, fills drilling fluid in sleeve pipe more than drillable setting of casing floating coupling.Because the sleeve pipe being positioned at below drillable setting of casing floating coupling is full of air, after this section of sleeve pipe enters the level section of entering, the gravity acting on the horizontal borehole wall alleviates, frictional force between sleeve pipe and the borehole wall reduces thereupon, the thrust that promotion sleeve pipe moves ahead also reduces, thus help the section of improving the standard cementing quality, arrive design attitude under being conducive to sleeve pipe.Under sleeve pipe after design attitude, when needs cementing, only need to build the pressure in sleeve pipe design load from well head, the shear pin 9 of fixing upper sliding sleeve 3 is cut off, upper sliding sleeve 3 is descending, and liquid flow hole 13 moves the interior bottom of low sleeve 6, when the liquid in the sleeve pipe at this moment more than drillable setting of casing floating coupling enters into from liquid flow hole 13 in setting of casing, thus realize flowing freely of whole bunch tube internal channel fluid, for cementing provides passage.
Claims (6)
1. a drillable setting of casing floating coupling, it is characterized in that: comprise urceolus, upper sliding sleeve and low sleeve, the two ends of urceolus are provided with the screw thread matched with sleeve pipe, upper sliding sleeve is by the internal upper part of shear pin fixed outer cylinder, upper sliding sleeve comprises upper surface, low sleeve is fixed on bottom in urceolus by sealing nut, the lower end part of upper sliding sleeve is in the internal upper part of low sleeve, the lower end of upper sliding sleeve is provided with bottom, the bottom of upper sliding sleeve is circumferentially with liquid flow hole, upper sliding sleeve outer surface of upper is provided with the combined seal ring A with the inner wall sealing of urceolus, the lower external face of upper sliding sleeve is provided with the combined seal ring B with the inner wall sealing of low sleeve, the lower external face of upper sliding sleeve is provided with snap ring, this snap ring is between the lower external face and the internal upper part of low sleeve of upper sliding sleeve, the diameter of the lower external face of upper sliding sleeve is identical with the internal diameter of the internal upper part of low sleeve, the internal diameter of the interior bottom of low sleeve is 1.15 to 1.35 times of the internal diameter of the internal upper part of low sleeve.
2. a kind of drillable setting of casing floating coupling according to claim 1, is characterized in that: described shear pin is made up of aluminium alloys.
3. a kind of drillable setting of casing floating coupling according to claim 1, is characterized in that: the upper surface that described upper sliding sleeve comprises is provided with current stabilization blind hole.
4. a kind of drillable setting of casing floating coupling according to claim 1, is characterized in that: the surface of the outer bottom of described low sleeve is provided with combined seal ring.
5. a kind of drillable setting of casing floating coupling according to claim 1, is characterized in that: the bottom circumference of described low sleeve is laid with and helps discharge orifice, leaves gap between the external surface of the bottom of described low sleeve and the inwall of described urceolus.
6. a kind of drillable setting of casing floating coupling according to claim 1, is characterized in that: the lower end of described low sleeve is provided with antiturning pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847238.8U CN205100896U (en) | 2015-10-29 | 2015-10-29 | Formula case can be bored and coupling is floated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847238.8U CN205100896U (en) | 2015-10-29 | 2015-10-29 | Formula case can be bored and coupling is floated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205100896U true CN205100896U (en) | 2016-03-23 |
Family
ID=55516683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520847238.8U Expired - Fee Related CN205100896U (en) | 2015-10-29 | 2015-10-29 | Formula case can be bored and coupling is floated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205100896U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822268A (en) * | 2016-05-27 | 2016-08-03 | 成都北方石油勘探开发技术有限公司 | Horizontal well completion pipe string for middle-shallow reservoir |
| CN105840135A (en) * | 2016-05-27 | 2016-08-10 | 成都北方石油勘探开发技术有限公司 | Production tubing |
| CN105888574A (en) * | 2016-05-27 | 2016-08-24 | 成都北方石油勘探开发技术有限公司 | Well completion pipe string |
| CN115822469A (en) * | 2023-02-15 | 2023-03-21 | 纬达石油装备有限公司 | Rupture disc type ultrahigh pressure floating coupling |
-
2015
- 2015-10-29 CN CN201520847238.8U patent/CN205100896U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822268A (en) * | 2016-05-27 | 2016-08-03 | 成都北方石油勘探开发技术有限公司 | Horizontal well completion pipe string for middle-shallow reservoir |
| CN105840135A (en) * | 2016-05-27 | 2016-08-10 | 成都北方石油勘探开发技术有限公司 | Production tubing |
| CN105888574A (en) * | 2016-05-27 | 2016-08-24 | 成都北方石油勘探开发技术有限公司 | Well completion pipe string |
| CN115822469A (en) * | 2023-02-15 | 2023-03-21 | 纬达石油装备有限公司 | Rupture disc type ultrahigh pressure floating coupling |
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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: 20160323 Termination date: 20201029 |