CN203626706U - Well control set packing pipe nipple - Google Patents
Well control set packing pipe nipple Download PDFInfo
- Publication number
- CN203626706U CN203626706U CN201320806415.9U CN201320806415U CN203626706U CN 203626706 U CN203626706 U CN 203626706U CN 201320806415 U CN201320806415 U CN 201320806415U CN 203626706 U CN203626706 U CN 203626706U
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- CN
- China
- Prior art keywords
- sliding sleeve
- mandrel
- lower contact
- pipe nipple
- well control
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- 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 relates to the technical field of a set packing pipe nipple and concretely relates to a well control set packing pipe nipple comprising a dabber, a lower connector, a slide sleeve and a first shearing pin. The upper end of the dabber is provided with a connection external ring bench; the dabber is fixedly disposed in the lower connector via the connection external ring bench; a cycled open groove downwardly opened is formed between the lower connector and the dabber under the connection external ring bench; the slide sleeve is arranged in the cycled open groove; and the slide sleeve and the dabber are installed together via the first shearing pin. The well control set packing pipe nipple is rationally structured with compactness and convenient usage; the slide sleeves goes down via ball pump pressure and well control is achieved when a channel in a pipe string is closed, so accidents like well immersion, overflow, well kick and well blowout are prevented during cleaning and fracturing; high safety degree is provided by the use of the well control set packing pipe nipple; when the slide sleeve loses efficacy, the slide sleeve can be cut via the cut of the shearing pin, so the lower joint can get away from the upper joint and a fracture channel is started; and high reliability of fracture channel start is provided.
Description
Technical field
the utility model relates to and sets pipe nipple technical field, is that a kind of well control sets pipe nipple.
Background technology
in completion pressing crack construction process, for preventing mud contamination stratum, before setting, pitching needs cleaning in pit shaft; In cleaning course, be control well downforce, conventionally in fracturing string bottom, ball-and-seat is installed; When ball-and-seat can be realized down-hole direct circulation, also can prevent the generation of the accidents such as well soaks, overflow; But ball-and-seat reliability is poor, often have the situations such as seal failure and occur, cannot effectively control down-hole pressure, there is certain potential safety hazard.
Summary of the invention
the utility model provides a kind of well control to set pipe nipple, has overcome the deficiency of above-mentioned prior art, and it can effectively solve when clean to pit shaft direct circulation, and ball-and-seat reliability is poor, easily loses efficacy, cannot well control, there is the problem of potential safety hazard.
the technical solution of the utility model realizes by following measures: a kind of well control sets pipe nipple, comprises mandrel, lower contact, sliding sleeve and the first shear pin; Have the outer shroud of connection platform in the upper end of mandrel, mandrel is fixedly mounted in lower contact by connecting outer shroud platform; Lower contact forms the circulation openings groove that Open Side Down with being connected between the mandrel of outer shroud platform below; In circulation openings groove, sliding sleeve is installed, sliding sleeve is installed together by the first shear pin and mandrel; Have mandrel outer shroud platform in the upper outside of mandrel, pressure reduction inner convex platform is arranged at the sliding sleeve top of mandrel outer shroud platform below, forms and press chamber between pressure reduction inner convex platform and mandrel outer shroud platform; There is the endoporus of opening upwards in the inside of mandrel, on mandrel, have and make endoporus and the overvoltage hole of pressing chamber to communicate; On mandrel below overvoltage hole, have mandrel circulation side opening, the sliding sleeve circulation side opening that mandrel circulation side opening is communicated with circulation openings groove is arranged at the sliding sleeve bottom corresponding with mandrel circulation side opening; Between overvoltage hole and sliding sleeve circulation side opening, on mandrel inwall, there iing annular ball seat inner convex platform; Between the outer ring surface lower end of sliding sleeve and lower contact, check device is installed.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
above-mentioned check device can comprise sliding sleeve pawl spring and positioning joint; On the sliding sleeve of sliding sleeve circulation side opening downside, circle distribution has at least three axial gaps, and axial gap is separated into the bottom of sliding sleeve the sliding sleeve pawl spring of at least three strips; There is respectively the interior fixture block of projection in inner side, each sliding sleeve pawl spring lower end; Be installed with in the mandrel bottom of sliding sleeve pawl spring lower end can be spacing with sliding sleeve pawl spring buckle positioning joint.
the inner top side of above-mentioned lower contact can be installed with top connection by the second shear pin.
on above-mentioned connection outer shroud platform, can there is external screw thread, connect between outer shroud platform and lower contact and be fixedly installed togather by screw thread; Or/and the upper end of endoporus is taper type wide at the top and narrow at the bottom; Or/and the upper inner of top connection has conical internal thread; There is conical external screw thread in the outside, lower end of lower contact.
between above-mentioned connection outer lug boss and lower contact, can be installed with sealing ring; Outside top connection bottom and between lower contact, be installed with sealing ring; Between the sliding sleeve of pressure chamber upside and mandrel, be installed with sealing ring; Between the sliding sleeve of sliding sleeve circulation side opening above and below and mandrel, be installed with sealing ring.
the utility model reasonable and compact in structure, easy to use; By the pitching pressure of spraining, make sliding sleeve descending, realize well control by closing pipe string internal channel; Effectively prevent clean and fracturing process in, the accidents such as generation well soaks, overflow, well kick and blowout, safe; In the time that sliding sleeve lost efficacy, can cut off by cutting off two shear pins, lower contact departs from top connection opens pressure break passage, improves the reliability that pressure break passage is opened simultaneously.
Accompanying drawing explanation
the master that accompanying drawing 1 is the utility model most preferred embodiment is depending on partly cuing open structural representation.
coding in accompanying drawing is respectively: 1 is mandrel, and 2 for connecting outer shroud platform, and 3 is lower contact, and 4 is circulation openings groove, 5 is sliding sleeve, and 6 is mandrel outer shroud platform, and 7 is pressure reduction inner convex platform, and 8 for pressing chamber, 9 is endoporus, and 10 is overvoltage hole, and 11 is mandrel circulation side opening, 12 is sliding sleeve circulation side opening, and 13 is ball seat inner convex platform, and 14 is sliding sleeve pawl spring, 15 is interior fixture block, and 16 is positioning joint, and 17 is the first shear pin, 18 is the second shear pin, and 19 is top connection, and 20 is sealing ring.
The specific embodiment
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in Figure 1, this well control sets pipe nipple and comprises mandrel 1, lower contact 3, sliding sleeve 5 and the first shear pin 17; Have the outer shroud of connection platform 2 in the upper end of mandrel 1, mandrel 1 is fixedly mounted in lower contact 3 by connecting outer shroud platform 2; Lower contact 3 forms the circulation openings groove 4 that Open Side Down with being connected between the mandrel 1 of outer shroud platform 2 belows; Sliding sleeve 5 is installed in circulation openings groove 4, and sliding sleeve 5 is installed together with mandrel 1 by the first shear pin 17; Have mandrel outer shroud platform 6 in the upper outside of mandrel 1, pressure reduction inner convex platform 7 is arranged at sliding sleeve 5 tops of mandrel outer shroud platform 6 belows, forms and press chamber 8 between pressure reduction inner convex platform 7 and mandrel outer shroud platform 6; There is the endoporus 9 of opening upwards in the inside of mandrel, on mandrel 1, have and make endoporus 9 and the overvoltage hole 10 of pressing chamber 8 to communicate; On mandrel 1 below overvoltage hole 10, have mandrel circulation side opening 11, the sliding sleeve circulation side opening 12 that mandrel circulation side opening 11 is communicated with circulation openings groove 4 is arranged at sliding sleeve 5 bottoms corresponding with mandrel circulation side opening 11; Between overvoltage hole 10 and sliding sleeve circulation side opening 12, on mandrel 1 inwall, there iing annular ball seat inner convex platform 13; Between the outer ring surface lower end of sliding sleeve 5 and lower contact 3, check device is installed.First the utility model be arranged on to fracturing sliding bush lower end and together send in well; Carry out pressure break sprain press before when tubing string is cleaned, need turn on pump circulation, adopt Klorvess Liquid to enter circulation openings groove 4 by endoporus 9, mandrel circulation side opening 11 and the sliding sleeve circulation side opening 12 of mandrel 1 successively, and set up and clean direct circulation with outer annular space, after cleaning to be recycled finishes, the pressure of can pitching spraining, high-pressure fluid enters in pressure chamber 8 through endoporus 9 and overvoltage hole 10 successively, and sliding sleeve 5 is applied to a downward thrust, and the first shear pin 17 is cut off, sliding sleeve 5 is descending, closes pipe string internal channel; The accidents such as while preventing follow-up fracturing work, ball-and-seat lost efficacy and occurs that well soaks, overflow, well kick and blowout; Simultaneously in cleaning process, also can be by closing the mode control well downforce of pipe string internal channel, safe.
can according to actual needs, above-mentioned ball seat type fracturing slide sleeve 5 be made further optimization and/or improvements:
as shown in Figure 1, check device comprises sliding sleeve pawl spring 14 and positioning joint 16; On the sliding sleeve 5 of sliding sleeve circulation side opening 12 downsides, circle distribution has at least three axial gaps, and axial gap is separated into the bottom of sliding sleeve 5 the sliding sleeve pawl spring 14 of at least three strips; There is respectively the interior fixture block 15 of projection in each sliding sleeve pawl spring 14 inner sides, lower end; Be installed with in mandrel 1 bottom of sliding sleeve pawl spring 14 lower ends can be spacing with sliding sleeve pawl spring 14 buckles positioning joint 16.In the time that sliding sleeve 5 drives sliding sleeve pawl spring 14 to be buckled on positioning joint 16 completely, sliding sleeve 5 axial limitings, anti-anti-skid sheath 5 resets, and makes pipe string internal channel all the time in closed condition.
as shown in Figure 1, be installed with top connection 19 in the inner top side of lower contact 3 by the second shear pin 18.Pitching in the situation that fracturing sliding bush cannot be opened, can be pressurizeed the second shear pin 18 is cut off after being sprained and pressing, and is departed from top connection 19 and made the unlatching of pressure break passage by lower contact 3, improves the reliability that pressure break passage is opened.
as shown in Figure 1, the outer upper end of positioning joint 16 is up-narrow and down-wide taper type; The inside lower end of interior fixture block 15 is skewed and is seated on the frustum face of positioning joint 16.When mandrel 1 moves down, the positioning joint 16 of taper type can be convenient to mandrel 1 radial development in the time moving down, and improves the reliability of sliding sleeve pawl spring 14 and positioning joint 16 buckles.
as shown in Figure 1, the upper end of endoporus 9 is taper type wide at the top and narrow at the bottom.
as shown in Figure 1, connect on outer shroud platform 2 and have external screw thread, connect between outer shroud platform 2 and lower contact 3 and be fixedly installed togather by screw thread.Be threaded and can be convenient to the dismounting between mandrel 1 and lower contact 3, easy to use.
as shown in Figure 1, connect between outer lug boss and lower contact 3 and be installed with sealing ring 20; Outside top connection 19 bottoms and between lower contact 3, be installed with sealing ring 20; Between the sliding sleeve 5 of pressure chamber 8 upsides and mandrel 1, be installed with sealing ring 20; Between the sliding sleeve 5 of sliding sleeve circulation side opening 12 above and belows and mandrel 1, be installed with sealing ring 20; Sealing ring 20 plays the effect that increases contact surface sealing.
the upper inner of above-mentioned top connection 19 has conical internal thread; There is conical external screw thread in the outside, lower end of lower contact 3.Can be convenient to like this utility model is connected with other downhole hardwares.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (9)
1. well control sets a pipe nipple, it is characterized in that comprising mandrel, lower contact, sliding sleeve and the first shear pin; Have the outer shroud of connection platform in the upper end of mandrel, mandrel is fixedly mounted in lower contact by connecting outer shroud platform; Lower contact forms the circulation openings groove that Open Side Down with being connected between the mandrel of outer shroud platform below; In circulation openings groove, sliding sleeve is installed, sliding sleeve is installed together by the first shear pin and mandrel; Have mandrel outer shroud platform in the upper outside of mandrel, pressure reduction inner convex platform is arranged at the sliding sleeve top of mandrel outer shroud platform below, forms and press chamber between pressure reduction inner convex platform and mandrel outer shroud platform; There is the endoporus of opening upwards in the inside of mandrel, on mandrel, have and make endoporus and the overvoltage hole of pressing chamber to communicate; On mandrel below overvoltage hole, have mandrel circulation side opening, the sliding sleeve circulation side opening that mandrel circulation side opening is communicated with circulation openings groove is arranged at the sliding sleeve bottom corresponding with mandrel circulation side opening; Between overvoltage hole and sliding sleeve circulation side opening, on mandrel inwall, there iing annular ball seat inner convex platform; Between the outer ring surface lower end of sliding sleeve and lower contact, check device is installed.
2. well control according to claim 1 sets pipe nipple, it is characterized in that check device comprises sliding sleeve pawl spring and positioning joint; On the sliding sleeve of sliding sleeve circulation side opening downside, circle distribution has at least three axial gaps, and axial gap is separated into the bottom of sliding sleeve the sliding sleeve pawl spring of at least three strips; There is respectively the interior fixture block of projection in inner side, each sliding sleeve pawl spring lower end; Be installed with in the mandrel bottom of sliding sleeve pawl spring lower end can be spacing with sliding sleeve pawl spring buckle positioning joint.
3. well control according to claim 2 sets pipe nipple, it is characterized in that the outer upper end of positioning joint is up-narrow and down-wide taper type; The inside lower end of interior fixture block is skewed and is seated on the frustum face of positioning joint.
4. set pipe nipple according to the well control described in claim 1 or 2 or 3, it is characterized in that the inner top side of lower contact is installed with top connection by the second shear pin.
5. set pipe nipple according to the well control described in claim 1 or 2 or 3, it is characterized in that connecting on outer shroud platform and have external screw thread, connect between outer shroud platform and lower contact and be fixedly installed togather by screw thread; Or/and the upper end of endoporus is taper type wide at the top and narrow at the bottom; Or/and the upper inner of top connection has conical internal thread; There is conical external screw thread in the outside, lower end of lower contact.
6. well control according to claim 4 sets pipe nipple, and it is characterized in that connecting on outer shroud platform has external screw thread, connects between outer shroud platform and lower contact and is fixedly installed togather by screw thread; Or/and the upper end of endoporus is taper type wide at the top and narrow at the bottom; Or/and the upper inner of top connection has conical internal thread; There is conical external screw thread in the outside, lower end of lower contact.
7. well control according to claim 4 sets pipe nipple, it is characterized in that connecting between outer lug boss and lower contact being installed with sealing ring; Outside top connection bottom and between lower contact, be installed with sealing ring; Between the sliding sleeve of pressure chamber upside and mandrel, be installed with sealing ring; Between the sliding sleeve of sliding sleeve circulation side opening above and below and mandrel, be installed with sealing ring.
8. well control according to claim 5 sets pipe nipple, it is characterized in that connecting between outer lug boss and lower contact being installed with sealing ring; Outside top connection bottom and between lower contact, be installed with sealing ring; Between the sliding sleeve of pressure chamber upside and mandrel, be installed with sealing ring; Between the sliding sleeve of sliding sleeve circulation side opening above and below and mandrel, be installed with sealing ring.
9. well control according to claim 6 sets pipe nipple, it is characterized in that connecting between outer lug boss and lower contact being installed with sealing ring; Outside top connection bottom and between lower contact, be installed with sealing ring; Between the sliding sleeve of pressure chamber upside and mandrel, be installed with sealing ring; Between the sliding sleeve of sliding sleeve circulation side opening above and below and mandrel, be installed with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806415.9U CN203626706U (en) | 2013-12-10 | 2013-12-10 | Well control set packing pipe nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806415.9U CN203626706U (en) | 2013-12-10 | 2013-12-10 | Well control set packing pipe nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203626706U true CN203626706U (en) | 2014-06-04 |
Family
ID=50813195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320806415.9U Expired - Fee Related CN203626706U (en) | 2013-12-10 | 2013-12-10 | Well control set packing pipe nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203626706U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
| CN107091065A (en) * | 2017-05-31 | 2017-08-25 | 中国石油集团西部钻探工程有限公司 | Exempt to bore ball seat |
| CN115680547A (en) * | 2022-11-11 | 2023-02-03 | 中国石油天然气集团有限公司 | Combined type setting back pressure valve device, tool pipe string and application thereof |
-
2013
- 2013-12-10 CN CN201320806415.9U patent/CN203626706U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
| CN107091065A (en) * | 2017-05-31 | 2017-08-25 | 中国石油集团西部钻探工程有限公司 | Exempt to bore ball seat |
| CN115680547A (en) * | 2022-11-11 | 2023-02-03 | 中国石油天然气集团有限公司 | Combined type setting back pressure valve device, tool pipe string and application 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20201210 |