CN203742470U - Continuous circulation pup joint used for well drilling - Google Patents
Continuous circulation pup joint used for well drilling Download PDFInfo
- Publication number
- CN203742470U CN203742470U CN201420060704.3U CN201420060704U CN203742470U CN 203742470 U CN203742470 U CN 203742470U CN 201420060704 U CN201420060704 U CN 201420060704U CN 203742470 U CN203742470 U CN 203742470U
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- China
- Prior art keywords
- pass
- pressure release
- bypass
- main valve
- valve body
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Abstract
The utility model discloses a continuous circulation pup joint used for well drilling. The continuous circulation pup joint comprises a pup joint body, a main valve structure is arranged on the upper portion in the pup joint body, a by-pass opening is formed in one side of the lower portion in the pup joint body, and a by-pass valve structure is arranged on the by-pass opening. An external plug is arranged on the outer side of a by-pass valve plate and is in threaded connection with a by-pass valve body in a sealed mode. An inner pressure relief plug is connected to the outer plug, and a through flow passing channel and multiple by-pass pressure relief flow outlet channels are arranged in the inner pressure relief plug and communicated with the by-pass opening. An inlet of each by-pass pressure relief flow outlet channel is perpendicularly communicated with the through flow passing channel. An outlet of each by-pass pressure relief flow outlet channel is communicated outside the pup joint body. A pressure relief screwed plug is connected to the through flow passing channel, and the lower end of the pressure relief screwed plug passes through the inlets of the by-pass pressure relief flow outlet channels and forms a conical surface seal structure with the through flow passing channel. Safety of on-site operation of disassembling the external plug can be guaranteed.
Description
Technical field
The utility model relates to continuous cyclic drilling technical field, particularly a kind of continuous circulation pipe nipple for drilling well.
Background technology
Continuous circulation pipe nipple is widely used in drilling well field.If patent documentation CN202467689U is at disclosed a kind of drilling well continuous circulation pipe nipple on October 3rd, 2012, comprise outer sleeve, outer sleeve internal upper part is provided with valve plate mechanism, upper valve plate mechanism comprises jump ring, valve seat and the straight-through valve plate being connected with valve seat by articulated elements, feature is: be positioned at outer sleeve bottom one side and have by-pass port, at by-pass port place, be provided with lower valve plate mechanism, lower valve plate mechanism comprises bypass valve seat, the sealing ring being connected with outer sleeve and the bypass valve plate being connected with bypass valve seat by articulated elements, torsion spring, and bypass valve plate one side is provided with plug.There is following problem in above-mentioned continuous circulation pipe nipple: one), when the plug of dismounting bypass valve plate one side, owing to there being higher hydraulic pressure in continuous circulation pipe nipple, easily causes that plug bursts out the handling safety accident of hurting sb.'s feelings; Two) bypass valve seat there will be rotation phenomenon at work, and then causes himself loosening, causes poorly sealedly, occur leaking, thereby impact use, application life is short; Three) straight-through valve plate adopts jump ring location, and the intensity of location structure is lower, directly causes the application life of continuous circulation pipe nipple shorter; Four) bypass rotational pin is vertical with the axis of continuous circulation pipe nipple, opens bypass valve plate and need to overcome himself gravity, and therefore, the unlatching of bypass valve plate is difficulty comparatively.
The utility model provides a kind of can guarantee to remove outer stifled field work safe and the continuous circulation pipe nipple for drilling well of handled easily for solving the technical problem existing in known technology.
The technical scheme that the utility model is taked for the technical problem existing in solution known technology is: a kind of continuous circulation pipe nipple for drilling well, comprise body, on described intrinsic top, be provided with main valve structure, in described intrinsic bottom, one side is provided with by-pass port, and at by-pass port, place is provided with bypass valve arrangement; Described main valve structure comprises main valve body and the main valve sheet arranging with described body co-axial seal, and described main valve sheet is connected on described main valve body by top bearing pin and top torsion spring, and described main valve body is fixed in described body by the axial limiting parts of its upper end; Described bypass valve arrangement comprises by-pass valve body and the bypass valve block being tightly connected with described body, described bypass valve block is connected on described by-pass valve body by bottom bearing pin and bottom torsion spring, in the outside of described bypass valve block, be provided with outer blocking up, described outer blocking up is connected on described by-pass valve body by thread seal; Outside described, block to be connected with in pressure release and block up, in stifled in described pressure release, be provided with of communicating with described by-pass port and go out circulation road straight through circulation road and a plurality of bypass pressure release, the import that described in each, bypass pressure release goes out circulation road all with described straight through circulation road vertical connection, the outlet that described in each, bypass pressure release goes out circulation road all communicates with described body exterior, described, be connected with pressure release plug on straight through circulation road, the bottom of described pressure release plug goes out the entrance of circulation road and straight through circulation road, forms conical surface sealing structure with described through described bypass pressure release.
The outside of described by-pass valve body is provided with spline groove, in described spline groove, is fitted with anti-rotation block, and described anti-rotation block and described body are affixed.
Described axial limiting parts comprise that the ring being formed by least three lobe blocks keeps off, and between two adjacent described blocks, are provided with spacing, in described ring gear, are provided with interior pushing out ring and jump ring, and described interior pushing out ring is clamped between described jump ring and described main valve body.
Described bottom bearing pin is parallel with the axis of described bottom torsion spring and the axis of described body.
Described outer blocking up as interior six sides block up outward, in described pressure release, stifled evagination partly falls into and is contained in the outer interior hexagonal structure blocking up of described interior six sides.
Advantage and the good effect that the utlity model has are:
One), by increase pressure relief in bypass valve arrangement, can guarantee to remove outer stifled field work safe;
Two) by increase spline structure in bypass valve arrangement, can prevent that by-pass valve body is loosening, and then avoid occurring leakage problem at by-pass valve body place, can improve the application life of pipe nipple;
Three) adopt ring gear that three lobe blocks form as the axial limiting parts of main valve body upper end, can improve the intensity of structure, and simple in structure, dismantle, install more convenient, cost of manufacture is low;
Four) the bottom bearing pin connecting with bypass valve block is parallel with pipe nipple body axis, when bypass valve block opens and closes, without overcoming valve block gravity, makes the keying of bypass valve block more easily, conveniently.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is ring gear structural representation of the present utility model;
Fig. 4 is stifled structural representation in pressure release of the present utility model;
Fig. 5 is the sectional view of Fig. 4.
In figure: 1, body, 2, main valve body, 3, main valve sheet, 4, top bearing pin, 5,12,16, sealing ring, 6, back-up ring, 7, ring gear, 71, block, 8, interior pushing out ring, 9, jump ring, 10, by-pass valve body, 11, bypass valve block, 13, bottom torsion spring, 14, bottom bearing pin, 15, interior six sides are stifled outward, 17, stifled in pressure release, 171, straight through circulation road, 172, bypass pressure release goes out circulation road, 18, pressure release plug, 19, anti-rotation block, 20, screw.
The specific embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1～Fig. 5, a kind of continuous circulation pipe nipple for drilling well, comprises body 1, and the top in described body 1 is provided with main valve structure, and bottom one side in described body 1 is provided with by-pass port, and at by-pass port, place is provided with bypass valve arrangement; Described main valve structure comprises main valve body 2 and the main valve sheet 3 arranging with described body 1 co-axial seal, is provided with sealing ring 5 and back-up ring 6, to form the sealing between the two between main valve body 2 and body 1.Described main valve sheet 3 is connected on described main valve body 2 by top bearing pin 4 and top torsion spring, and described main valve body 2 is fixed in described body 1 by the axial limiting parts of its upper end; Described bypass valve arrangement comprises by-pass valve body 10 and the bypass valve block 11 being tightly connected with described body 1, between described by-pass valve body 10 and described body 1, is provided with sealing ring 12, to form the sealing between the two.Described bypass valve block 11 is connected on described by-pass valve body 10 by bottom bearing pin 14 and bottom torsion spring 13, in the outside of described bypass valve block 11, be provided with outer stifled, described outer stifled 15 are connected on described by-pass valve body 10 by thread seal, described outer stifled 15 and described by-pass valve body 10 between be provided with sealing ring 16, to form the sealing between the two.In order to make to remove outer stifled job safety, outside described, block to be connected with in pressure release and block up 17, be provided with of communicating with described by-pass port in described pressure release in stifled 17 and go out circulation road 172 straight through circulation road 171 and a plurality of bypass pressure release, the import that described in each, bypass pressure release goes out circulation road 172 all with described straight through circulation road 171 vertical connections, the outlet that described in each, bypass pressure release goes out circulation road 172 all with described body 1 exterior, described, be connected with pressure release plug 18 on straight through circulation road 171, the bottom of described pressure release plug 18 goes out the entrance of circulation road 172 and straight through circulation road 171, forms conical surface sealing structure with described through described bypass pressure release.
In the present embodiment, in order to make structure compacter, in described outer stifled employing, six sides are outer blocks up 15, and in described pressure release, stifled 17 evagination partly falls into and is contained in outer stifled 15 the interior hexagonal structure of described interior six sides.In order to prevent that by-pass valve body from rotating in the course of the work, in the outside of described by-pass valve body 10, be provided with spline groove, in described spline groove, be fitted with anti-rotation block 19, described anti-rotation block 19 is affixed by screw 20 with described body 1.In order to make the axial location of main valve body more firm, described axial limiting parts comprise the ring gear 7 being formed by least three lobe blocks 71, between two adjacent described blocks 71, be provided with spacing, in described ring gear 7, be provided with interior pushing out ring 8 and jump ring 9, described interior pushing out ring 8 is clamped between described jump ring 9 and described main valve body.In order to make the keying of bypass valve block lighter, described bottom bearing pin 14 is parallel with the axis of described bottom torsion spring 13 and the axis of described body 1.
Although by reference to the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, can also make a lot of forms, within these all belong to protection domain of the present utility model.
Claims (5)
1. for a continuous circulation pipe nipple for drilling well, comprise body, on described intrinsic top, be provided with main valve structure, in described intrinsic bottom, one side is provided with by-pass port, and at by-pass port, place is provided with bypass valve arrangement; Described main valve structure comprises main valve body and the main valve sheet arranging with described body co-axial seal, and described main valve sheet is connected on described main valve body by top bearing pin and top torsion spring, and described main valve body is fixed in described body by the axial limiting parts of its upper end; Described bypass valve arrangement comprises by-pass valve body and the bypass valve block being tightly connected with described body, described bypass valve block is connected on described by-pass valve body by bottom bearing pin and bottom torsion spring, in the outside of described bypass valve block, be provided with outer blocking up, described outer blocking up is connected on described by-pass valve body by thread seal; It is characterized in that,
Outside described, block to be connected with in pressure release and block up, in stifled in described pressure release, be provided with of communicating with described by-pass port and go out circulation road straight through circulation road and a plurality of bypass pressure release, the import that described in each, bypass pressure release goes out circulation road all with described straight through circulation road vertical connection, the outlet that described in each, bypass pressure release goes out circulation road all communicates with described body exterior, described, be connected with pressure release plug on straight through circulation road, the upper end of described pressure release plug goes out the entrance of circulation road and straight through circulation road, forms conical surface sealing structure with described through described bypass pressure release.
2. the continuous circulation pipe nipple for drilling well according to claim 1, is characterized in that, the outside of described by-pass valve body is provided with spline groove, in described spline groove, is fitted with anti-rotation block, and described anti-rotation block and described body are affixed.
3. the continuous circulation pipe nipple for drilling well according to claim 1, it is characterized in that, described axial limiting parts comprise that the ring being formed by least three lobe blocks keeps off, between two adjacent described blocks, be provided with spacing, in described ring gear, be provided with interior pushing out ring and jump ring, described interior pushing out ring is clamped between described jump ring and described main valve body.
4. the continuous circulation pipe nipple for drilling well according to claim 1, is characterized in that, described bottom bearing pin is parallel with the axis of described bottom torsion spring and the axis of described body.
5. the continuous circulation pipe nipple for drilling well according to claim 1, is characterized in that, described outer blocking up as interior six sides block up outward, and in described pressure release, stifled evagination partly falls into and is contained in the outer interior hexagonal structure blocking up of described interior six sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420060704.3U CN203742470U (en) | 2014-02-10 | 2014-02-10 | Continuous circulation pup joint used for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420060704.3U CN203742470U (en) | 2014-02-10 | 2014-02-10 | Continuous circulation pup joint used for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742470U true CN203742470U (en) | 2014-07-30 |
Family
ID=51342287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420060704.3U Expired - Fee Related CN203742470U (en) | 2014-02-10 | 2014-02-10 | Continuous circulation pup joint used for well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742470U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632109A (en) * | 2014-12-03 | 2015-05-20 | 宝鸡石油机械有限责任公司 | Circulating nipple capable of being opened and closed repeatedly |
| CN109424330A (en) * | 2017-09-05 | 2019-03-05 | 中国石油天然气股份有限公司 | Self-balancing positive and negative bidirectional continuous circulation operation device |
| CN111927352A (en) * | 2020-09-08 | 2020-11-13 | 中国石油天然气集团有限公司 | Continuous circulation device for drilling fluid and using method thereof |
-
2014
- 2014-02-10 CN CN201420060704.3U patent/CN203742470U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632109A (en) * | 2014-12-03 | 2015-05-20 | 宝鸡石油机械有限责任公司 | Circulating nipple capable of being opened and closed repeatedly |
| CN104632109B (en) * | 2014-12-03 | 2017-08-25 | 宝鸡石油机械有限责任公司 | It is a kind of to repeat the circulating sub of opening and closing |
| CN109424330A (en) * | 2017-09-05 | 2019-03-05 | 中国石油天然气股份有限公司 | Self-balancing positive and negative bidirectional continuous circulation operation device |
| CN111927352A (en) * | 2020-09-08 | 2020-11-13 | 中国石油天然气集团有限公司 | Continuous circulation device for drilling fluid and using method thereof |
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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 |
Granted publication date: 20140730 Termination date: 20160210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |