CN205558821U - Big latus rectum inside lining oil pipe - Google Patents
Big latus rectum inside lining oil pipe Download PDFInfo
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- CN205558821U CN205558821U CN201620263869.XU CN201620263869U CN205558821U CN 205558821 U CN205558821 U CN 205558821U CN 201620263869 U CN201620263869 U CN 201620263869U CN 205558821 U CN205558821 U CN 205558821U
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Abstract
The utility model provides a big latus rectum inside lining oil pipe, relates to oil machinery and mines technical field, especially a big latus rectum inside lining oil pipe's designing technique. The utility model discloses an oil pipe, thin wall bushing pipe set up the external screw thread at oil pipe both ends, and thin wall bushing pipe interference fit is in the oil pipe inner wall, the thin wall bushing pipe forms the turn -ups mouth of pipe in oil pipe's mouth of pipe department along the radial turn -ups of oil pipe, and the orificial external diameter of turn -ups is less than the path of oil pipe external screw thread, set up many rings of teeth on the orificial outer circular conical surface of turn -ups, the wall thickness of bushing pipe is 2.0mm~2.9mm. The utility model has the advantages of the internal diameter increases, improves the flow performance of fluid.
Description
Technical field
This utility model relates to petroleum machinery production technique field, the designing technique of a kind of big orifice liner oil pipe.
Background technology
At present, liner oil pipe every root length degree about 10m, this body diameter of oil pipe that oil field uses in a large number are 73mm, generally connect the tubing string forming hundreds of or a few km with box cupling, use, achieve preferable effect, extend the service life of oil pipe in lower going-into-well；Still suffering from problem: 1 simultaneously) the interior latus rectum of liner oil pipe is little, and after the oil tube inner lining of internal diameter 62mm, its aperture is less than 55mm, and the multistage-combination (1 inch of rod collar external diameter is 55mm) that have impact on roofbolt uses；2) when downhole temperature is higher than 90 DEG C, bushing pipe softens, the defect such as bulge, elongation occurs simultaneously.
Therefore in producing well, it is ensured that the output of extraction fluid, the round operation of rod string and the rountrip of pump plunger；Liner oil pipe is needed to have sufficiently large interior latus rectum, bushing pipe temperature resistant grade to be improved.
Utility model content
This utility model purpose is for problem above, it is provided that a kind of internal diameter increases, improves the big orifice liner oil pipe of the mobile performance of fluid.
This utility model includes oil pipe, thin-walled bushing pipe, arranges external screw thread at described oil pipe two ends, and described thin-walled bushing pipe is interference fitted in tube inner wall；Described thin-walled bushing pipe forms the flange mouth of pipe along oil pipe radially flange at the mouth of pipe of oil pipe, and the external diameter of the described flange mouth of pipe is less than the path of oil tube external thread；Arranging multi-turn tooth in the outer conical surface of the described flange mouth of pipe, the wall thickness of described bushing pipe is 2.0mm ~ 2.9mm.
The wall thickness of this utility model thin-walled bushing pipe is 2.0mm ~ 2.9mm, the interior latus rectum making liner oil pipe reaches 58mm ~ 56.2mm, this thin-walled liner oil pipe be connected with liner tubing coupling (patent 201420257878.9) after the width of sealing ring convex of flange and liner box cupling of thin-walled bushing pipe and internal diameter size reasonable disposition, it is to avoid during tightening, produce undergauge；Meet the use of the multistage-combination roofbolt that producing well maximum outside diameter is 55mm.The beneficial effects of the utility model are: 1) under the conditions of 110 DEG C, and thin-walled bushing pipe contacts with tube inner wall closely, and when down-hole uses, bushing pipe not bulge, elongation are controlled；2) internal diameter increases, and flow area increases, it is ensured that the output of extraction fluid, the round operation of rod string and the rountrip of pump plunger；3) bushing pipe is nonmetallic materials, and conduction is slow, has certain heat insulation effect, improves the mobile performance of fluid.
The shape of tooth described in the utility model can be zigzag, helical tooth or screw thread.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Detailed description of the invention
As shown in Figure 1, 2, this utility model includes oil pipe 1, thin-walled bushing pipe 2, arranges external screw thread 3 at oil pipe 1 two ends, and thin-walled bushing pipe 2 is interference fitted in oil pipe 1 inwall；Thin-walled bushing pipe 2 forms flange mouth of pipe 2-1 along oil pipe 1 radially flange at the mouth of pipe of oil pipe 1, and the external diameter of flange mouth of pipe 2-1 is less than the path of oil pipe 1 external screw thread 3；Multi-turn tooth is set in the outer conical surface of flange mouth of pipe 2-1；The wall thickness of bushing pipe 2 is 2.0mm ~ 2.9mm.
Claims (2)
1. a big orifice liner oil pipe, including oil pipe, thin-walled bushing pipe, arranges external screw thread at described oil pipe two ends, and described thin-walled bushing pipe is interference fitted in tube inner wall；Described thin-walled bushing pipe forms the flange mouth of pipe along oil pipe radially flange at the mouth of pipe of oil pipe, and the external diameter of the described flange mouth of pipe is less than the path of oil tube external thread；It is characterized in that: arrange multi-turn tooth in the outer conical surface of the described flange mouth of pipe, the wall thickness of described bushing pipe is 2.0mm ~ 2.9mm.
A kind of big orifice liner oil pipe the most according to claim 1, it is characterised in that: the shape of each described tooth can be zigzag, helical tooth or screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620263869.XU CN205558821U (en) | 2016-04-01 | 2016-04-01 | Big latus rectum inside lining oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620263869.XU CN205558821U (en) | 2016-04-01 | 2016-04-01 | Big latus rectum inside lining oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205558821U true CN205558821U (en) | 2016-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620263869.XU Active CN205558821U (en) | 2016-04-01 | 2016-04-01 | Big latus rectum inside lining oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205558821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837192A (en) * | 2017-02-23 | 2017-06-13 | 南通市华业石油机械有限公司 | A kind of liner oil pipe and its manufacturing process |
-
2016
- 2016-04-01 CN CN201620263869.XU patent/CN205558821U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837192A (en) * | 2017-02-23 | 2017-06-13 | 南通市华业石油机械有限公司 | A kind of liner oil pipe and its manufacturing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180726 Address after: 225009 No. 188, Weiyang Road, Yangzhou, Jiangsu Co-patentee after: China Petroleum & Chemical Corporation Jiangsu Oilfield Branch Patentee after: Sinopec Corp. Co-patentee after: Jiangsu oil field Mining Development Co., Ltd. Address before: 225009 No. 188, Weiyang Road, Yangzhou, Jiangsu Co-patentee before: China Petroleum & Chemical Corporation Jiangsu Oilfield Branch Patentee before: Sinopec Corp. |