CN204283244U - A kind of casing screw protector cap - Google Patents
A kind of casing screw protector cap Download PDFInfo
- Publication number
- CN204283244U CN204283244U CN201420717770.3U CN201420717770U CN204283244U CN 204283244 U CN204283244 U CN 204283244U CN 201420717770 U CN201420717770 U CN 201420717770U CN 204283244 U CN204283244 U CN 204283244U
- Authority
- CN
- China
- Prior art keywords
- thread
- frictional resistance
- band
- protector body
- cap
- 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.)
- Withdrawn - After Issue
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model discloses a kind of casing screw protector cap, it comprise thread protector body, to be located at inside thread protector body and the internal thread be connected with casing threads, the interior diameter increasing described thread protector body or remove partial screw threads and formed fall frictional resistance band, be located at the non-skid band falling frictional resistance band adjacent, the horizontal stripe being axially set in described non-skid band periphery along thread protector body.Casing screw protector cap adds and falls frictional resistance band, and reduce the contact position of thread protecting cap and sleeve pipe, decrease frictional resistance, thread protecting cap is unloaded down from pin thread and is more prone to; Thread protecting cap external surface is provided with non-skid band, and when avoiding using chain wrench to unload thread protecting cap, chain wrench holds eely problem, adds field work safe.This patent structure is simple, and easy to operate, cost of investment is low, can in field of oil drilling extensive use.
Description
Technical field
The utility model relates to the technical field of oilfield drilling, particularly relates to a kind of casing screw protector cap.
Background technology
In oilfield drilling engineering, need to use sleeve pipe, cannula tip has thread, in handling process for avoiding the damage thread that collides with, will arrange the casing screw protector cap of sheath form in end.Current casing screw protector cap is integral cap hat formula, the thread that whole interior all arranges thread and sleeve pipe is connected, smooth surface, often run into thread protecting cap to be difficult to unload down from sleeve pipe, or because standing time is long and cannot dismantle the situation of thread protecting cap, therefore operating personnel often use the afterburning shackle of chain wrench and iron hammer to knock to release, but use the afterburning shackle of chain wrench easily to skid, when overexerting, also may make operating personnel's tumble injury; And iron hammer knocks to release and may destroy screw thread, sleeve pipe is caused to be scrapped.
Summary of the invention
For the deficiencies in the prior art, the technical problems to be solved in the utility model is to provide a kind of easy-off casing screw protector cap.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of casing screw protector cap, it comprises thread protector body, to be located at inside thread protector body and the internal thread be connected with casing threads, the interior diameter increasing described thread protector body or remove partial screw threads and formed fall frictional resistance band, be located at the non-skid band falling frictional resistance band adjacent, the horizontal stripe being axially set in described non-skid band periphery along thread protector body.
One as the technical scheme of the utility model casing screw protector cap is improved, described in fall frictional resistance band than thread protector body protrude 1 ~ 5 millimeter.
One as the technical scheme of the utility model casing screw protector cap is improved, described in the alternate setting of axis along thread protector body of frictional resistance band and non-skid band is fallen.
One as the technical scheme of the utility model casing screw protector cap is improved, and each non-skid band is provided with 3 ~ 5 horizontal stripes, and the width of described non-skid band is 9 ~ 12 centimetres, and the width of every root horizontal stripe is 5 ~ 10 millimeters, is highly 1 ~ 5 millimeter.
The beneficial effects of the utility model are: add and fall frictional resistance band, the diameter of the position not having non-skid band is made to increase thus reduce the contact position between casing screw protector cap and sleeve pipe, decrease frictional resistance, reduce the dismounting difficulty of casing screw protector cap, site operation personnel can be made to be more prone to when pin thread is unloaded down by thread protecting cap, thus avoid and not to be forced to because can not unloading any more thread protecting cap for a long time adopt iron hammer to knock the problem released, be conducive to protective casing screw thread; On the other hand, be provided with non-skid band at thread protecting cap external surface, when avoiding site operation personnel to use chain wrench to unload thread protecting cap, chain wrench holds eely problem, adds field work safe.This patent structure is simple, and easy to operate, cost of investment is low, can in field of oil drilling extensive use.
Accompanying drawing explanation
Fig. 1 is the outline structural representation of a kind of casing screw protector cap of the utility model embodiment.
Fig. 2 is the cutting plane structural representation of a kind of casing screw protector cap of the utility model embodiment.
Detailed description of the invention
Detailed description of the invention of the present utility model is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of casing screw protector cap of the utility model, it comprises thread protector body 11, to be located at inside thread protector body 11 and the internal thread 18 be connected with casing threads, the interior diameter increasing described thread protector body 11 or remove partial screw threads and formed fall frictional resistance band 12, be located at the non-skid band 15 falling frictional resistance band 12 adjacent, the horizontal stripe 16 being axially set in described non-skid band 15 periphery along thread protector body 11.Casing screw protector cap adds and falls frictional resistance band 12; the diameter of the position not having non-skid band 15 is made to increase thus reduce the contact position between casing screw protector cap and sleeve pipe; decrease frictional resistance; reduce the dismounting difficulty of casing screw protector cap; site operation personnel can be made to be more prone to when pin thread is unloaded down by thread protecting cap; thus avoid and not to be forced to because can not unloading any more thread protecting cap for a long time adopt iron hammer to knock the problem released, be conducive to protective casing screw thread.On the other hand, be provided with non-skid band at thread protecting cap external surface, when avoiding site operation personnel to use chain wrench to unload thread protecting cap, chain wrench holds eely problem, adds field work safe.This patent structure is simple, and easy to operate, cost of investment is low, can in field of oil drilling extensive use.Increase interior diameter and can increase external diameter to keep the intensity of thread protector body simultaneously.
More preferably, described in fall frictional resistance band 12 and protrude 1 ~ 5 millimeter than thread protector body, ensure to reduce the screw thread also while frictional resistance with enough intensity protective casings.
More preferably, described in frictional resistance band 12 and the axis alternate setting of non-skid band 15 along thread protector body 11 are fallen, make casing screw protector cap be sheathed on sleeve pipe evenly, the frictional resistance be subject to is also more balanced.
More preferably, each non-skid band 15 is provided with 3 ~ 5 horizontal stripes 16, and the width of described non-skid band 15 is 9 ~ 12 centimetres, and meet dismounting chain wrench and carry out clamping and dismantle, the width of every root horizontal stripe is 5 ~ 10 millimeters, is highly 1 ~ 5 millimeter, is convenient to fastening and anti-skidding.
Above disclosedly be only preferred embodiment of the present utility model, certainly can not limit the interest field of the utility model with this, therefore according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (4)
1. a casing screw protector cap, is characterized in that: comprise thread protector body, to be located at inside thread protector body and the internal thread be connected with casing threads, the interior diameter increasing described thread protector body or remove partial screw threads and formed fall frictional resistance band, be located at the non-skid band falling frictional resistance band adjacent, the horizontal stripe being axially set in described non-skid band periphery along thread protector body.
2. casing screw protector cap according to claim 1, is characterized in that: described in fall frictional resistance band than thread protector body protrude 1 ~ 5 millimeter.
3. casing screw protector cap according to claim 1, is characterized in that: described in the alternate setting of axis along thread protector body of frictional resistance band and non-skid band is fallen.
4. casing screw protector cap according to claim 1, is characterized in that: each non-skid band is provided with 3 ~ 5 horizontal stripes, and the width of described non-skid band is 9 ~ 12 centimetres, and the width of every root horizontal stripe is 5 ~ 10 millimeters, is highly 1 ~ 5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717770.3U CN204283244U (en) | 2014-11-26 | 2014-11-26 | A kind of casing screw protector cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717770.3U CN204283244U (en) | 2014-11-26 | 2014-11-26 | A kind of casing screw protector cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283244U true CN204283244U (en) | 2015-04-22 |
Family
ID=52866419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420717770.3U Withdrawn - After Issue CN204283244U (en) | 2014-11-26 | 2014-11-26 | A kind of casing screw protector cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204283244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389531A (en) * | 2014-11-26 | 2015-03-04 | 中国海洋石油总公司 | Screw protection cap of sleeve |
-
2014
- 2014-11-26 CN CN201420717770.3U patent/CN204283244U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389531A (en) * | 2014-11-26 | 2015-03-04 | 中国海洋石油总公司 | Screw protection cap of sleeve |
| CN104389531B (en) * | 2014-11-26 | 2016-05-25 | 中国海洋石油总公司 | A kind of casing screw protector cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150422 Effective date of abandoning: 20160525 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |