CN102134977A - Secondary plugging valve - Google Patents
Secondary plugging valve Download PDFInfo
- Publication number
- CN102134977A CN102134977A CN2011100433413A CN201110043341A CN102134977A CN 102134977 A CN102134977 A CN 102134977A CN 2011100433413 A CN2011100433413 A CN 2011100433413A CN 201110043341 A CN201110043341 A CN 201110043341A CN 102134977 A CN102134977 A CN 102134977A
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- valve
- mandrel
- lower contact
- slips
- shutoff valve
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Abstract
The invention relates to a device for temporarily plugging a pipe column of a well which easily blows out and leaks, namely a control device for hydraulically setting the trapped pressure of a packer, in particular to an underground plugging valve. The valve comprises a pump-out blocking valve and a secondary plugging device, wherein the pump-out blocking valve comprises an upper joint, a lower joint, a valve plug, a shear pin and a sealing ring which are connected in turn; and the secondary plugging device comprises an upper spindle, a slip, a spring, a sealing ring and a lower spindle which are connected in turn, and is arranged in the pump-out blocking valve. The secondary plugging valve is easy to operate, has a good plugging effect, and ensures the maximum internal diameter of the pipe column and provides convenience for setting a ball seat substituting tool of the packer simultaneously.
Description
Technical field:
The present invention relates to the temporary plugging device of a kind of easy spray Absorption Wells well casing post, also is the control device of the trap pressure of hydraulic setting packer, is specifically related to a kind of down-hole secondary shutoff valve.
Background technology:
In the formation testing completion, easily spraying a test string or a test string process under the Absorption Wells, well kick, gas blowout accident in the easy generator tube, rise, lower tubular column needs for a long time, rise, going down process can waste a large amount of mud, in order to stop that well kick, blowout phenomenon take place in the tubing string, shorten the time of implementing the control well head, need on tubing string, design temporarily stifled device; What set hydraulic packer most employings at present is the ball-throwing type shutoff, need ball seat and cooperate the effect that reaches sealing with ball, in tubing string, suppress then and set, but the existence of ball seat must make the internal diameter of tubing string dwindle, follow-up other operations of oil well have been influenced, do not have reliable blowout prevention procedure in the tubing string simultaneously in following brill and trip-out process, the blowout hour of danger exists.
Summary of the invention:
The purpose of this invention is to provide a kind of secondary shutoff valve, processing ease and plugging effect are good, guarantee that simultaneously the maximum inner diameter of tubing string makes things convenient for the ball seat of set packer to replace instrument.
For achieving the above object, the present invention is by the following technical solutions:
A kind of secondary shutoff valve provided by the invention comprises and pumps formula obstruction valve and secondary plugging device; The described formula that pumps stops up that valve comprises that the top connection, lower contact, the valve that are linked in sequence are stifled, shear pin, sealing ring; Described secondary plugging device comprises last mandrel, slips, spring, sealing ring, the following mandrel that is linked in sequence, and described top connection is threaded with lower contact, and surveying in described top connection and the lower contact junction has an extension diameter section;
Have the shear pin hole on described lower contact and described valve are stifled, have seal groove on described valve is stifled, described lower contact inside has a step sutaining valve stifled;
The last mandrel of described secondary plugging device is connected with following mandrel thread, the described mandrel middle part of going up is axially arranged with elongated slot, be drilled with two screwed holes in described each groove, described top connection middle part design has limited step, the described mandrel of going up with following mandrel junction a undergauge step to be arranged, and described upward mandrel is connected undergauge step place with following mandrel sealing ring is housed;
In a kind of secondary shutoff valve technology scheme provided by the invention, the lower contact that the described formula that pumps is stopped up valve is connected by shear pin with valve is stifled, can regulate the shear pressure value arbitrarily.
In another preferred a kind of secondary shutoff valve technology scheme provided by the invention, the described formula that pumps is stopped up between the stifled and lower contact of the valve of valve and is adopted the sealing ring sealing, and described sealing ring is installed in the seal groove of described valve on stifled.
In the preferred a kind of secondary shutoff valve technology scheme more provided by the invention, three slips of described secondary plugging device are stuck in the extension diameter section between top connection and the lower contact, and support by spring.
In another preferred a kind of secondary shutoff valve technology scheme provided by the invention, the space of relative motion is arranged in the extension diameter section of described secondary plugging device between top connection and lower contact.
In another preferred a kind of secondary shutoff valve technology scheme provided by the invention, described spring is a flat spring, is provided with elongated slot with the described corresponding side of groove that goes up mandrel on the described slips, and an end of described flat spring projection withstands in the described elongated slot.
In another preferred a kind of secondary shutoff valve technology scheme provided by the invention, the described quantity that goes up the axial elongated slot in mandrel middle part is three, and equal and opposite in direction, evenly is provided with.
In another preferred a kind of secondary shutoff valve technology scheme provided by the invention, the quantity of described slips is three, the big or small and described equal and opposite in direction of going up the axial elongated slot in mandrel middle part.
In another preferred a kind of secondary shutoff valve technology scheme provided by the invention, described top of going up mandrel is outer hexagonal structure.
In another preferred a kind of secondary shutoff valve technology scheme provided by the invention, evenly have six shear pin holes respectively on described lower contact and described valve are stifled.
Because the beneficial effect that has adopted technique scheme, the present invention to obtain is:
This programme adopts and suppress set packer in oil pipe, cuts off shear pin, and valve is stifled to be fallen to realizing can carry out every operation in the tubing string in tubing string all-pass footpath.When tripping out tubing string, drop into the shutoff valve from well head, suppress in the tubing string, the secondary plugging device puts in place, and the slips distending is stuck in the extension diameter section shutoff and keeps a grip on, blowout prevention effect in playing.
Description of drawings
Fig. 1 stops up the valve arrangement schematic diagram for a kind of formula that pumps of secondary shutoff valve
Fig. 2 is a kind of secondary plugging device structural representation of secondary shutoff valve;
Fig. 3 is that a kind of secondary plugging device of secondary shutoff valve drops into shutoff tubing string view;
Wherein, the 1-top connection, the 2-lower contact, the 3-valve is stifled, 4-shear pin, the last mandrel of 5-, 6-bolt, 7-slips, 8-spring, mandrel under the 9-.
The specific embodiment
The invention will be described in further detail below in conjunction with embodiment.
Embodiment 1:
As Figure 1-3, a kind of secondary shutoff valve of the present invention comprises and pumps formula obstruction valve and secondary plugging device; The described formula that pumps stops up that valve comprises that the top connection 1, lower contact 2, the valve that are linked in sequence are stifled 3, shear pin 4, sealing ring; The secondary plugging device comprises last mandrel 5, slips 7, spring 8, sealing ring, the following mandrel 9 that is linked in sequence, top connection 1 is threaded with lower contact 2, survey in top connection 1 and lower contact 2 junctions extension diameter section is arranged, the slips 7 of secondary plugging device is stuck in the extension diameter section between top connection 1 and the lower contact 2, and support by spring 8, spring 8 is a flat spring, is provided with elongated slot with the corresponding side of the groove of last mandrel 5 on the slips 7, and an end of flat spring projection withstands in the described elongated slot; The space that relative motion is arranged in the extension diameter section of secondary plugging device between top connection 1 and lower contact 2; Lower contact 2 is blocked up on 3 with valve and is evenly had six shear pin holes respectively, and connects by shear pin 4, can regulate the shear pressure value arbitrarily; Have seal groove on the valve stifled 3, adopt the sealing ring sealing; Lower contact 2 inside have a step sutaining valve stifled; The last mandrel 5 and the following mandrel 9 of secondary plugging device are threaded, and last mandrel 5 middle parts are axially arranged with elongated slot, and the quantity of the elongated slot that last mandrel 5 middle parts are axial is three, and equal and opposite in direction, evenly are provided with, and are drilled with two screwed holes in each groove; The design of top connection 1 middle part has limited step, upward mandrel 5 has a undergauge step with following mandrel 9 junctions, and last mandrel 5 is connected undergauge step place with following mandrel 9 sealing ring is housed; The quantity of slips 7 is three, and the equal and opposite in direction of the elongated slot that big or small and last mandrel 5 middle parts are axial is drilled with two screwed holes on the slips 7, and the interior bolt 6 of also using of elongated slot that slips 7 is contained in mandrel 5 connects, and spring 8 is contained between slips 7 and the last mandrel 5.
Sealing ring is installed in top connection 1, top connection 1 and lower contact 2 usefulness are threaded, form the overcoat that the formula that pumps is stopped up valve, sealing ring is contained on the valve stifled 3, and link together, form airtight annular seal space with lower contact 2 usefulness shear pins 4; Spring 8 and slips 7 cards are embedded in the groove of mandrel 5, slips 7 is fixing with last mandrel 5 usefulness bolts 6, sealing ring is installed in lower contact 2 seal grooves, form the secondary plugging device.
When lower tubular column, stop up the below that valve is connected tubing string with pumping formula, can prevent effectively that liquid outwards overflows in the well, after having descended tubing string that production tree is installed, suppress follow procedure in the tubing string and carry out set packer, continue to suppress and cut off shear pin 4, valve stifled 3 falls down, and whole tubing string communicates, can carry out every operation, operation finishes in the time of need tripping out tubing string, can carry out shutoff to tubing string from throwing secondary plugging device in the tubing string, prevents that liquid overflows in the well, if in the time of can not carrying out complete shutoff to tubing string by the deadweight of secondary plugging device, can in tubing string, suppress, the secondary plugging device is put in place fully, play complete shutoff tubing string.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of this claim scope.
Claims (10)
1. a secondary shutoff valve comprises and pumps formula obstruction valve and secondary plugging device; The described formula that pumps is stopped up valve and is comprised top connection (1), lower contact (2), valve stifled (3), shear pin (4), the sealing ring that is linked in sequence; Described secondary plugging device comprises last mandrel (5), slips (7), spring (8), sealing ring, the following mandrel (9) that is linked in sequence, it is characterized in that: described top connection (1) is threaded with lower contact (2), and surveying in described top connection (1) and lower contact (2) junction has an extension diameter section;
Described lower contact (2) is blocked up on (3) with described valve and is had the shear pin hole, and described valve has seal groove on stifled (3), and described lower contact (2) inside has a step sutaining valve stifled;
The last mandrel (5) and the following mandrel (9) of described secondary plugging device are threaded, described mandrel (5) middle part of going up is axially arranged with elongated slot, be drilled with two screwed holes in described each groove, the design of described top connection (1) middle part has limited step, the described mandrel (5) of going up with following mandrel (9) junction a undergauge step to be arranged, and described upward mandrel (5) is connected undergauge step place with following mandrel (9) sealing ring is housed;
Be drilled with two screwed holes on the described slips (7), the interior bolt (6) of also using of elongated slot that described slips (7) is contained in mandrel (5) connects, and described spring (8) is contained between slips (7) and the last mandrel (5).
2. a kind of secondary shutoff valve as claimed in claim 1 is characterized in that: the lower contact (2) that the described formula that pumps is stopped up valve is connected by shear pin (4) with valve stifled (3), can regulate the shear pressure value arbitrarily.
3. a kind of secondary shutoff valve as claimed in claim 2 is characterized in that: adopt the sealing ring sealing between the valve stifled (3) that the described formula that pumps is stopped up valve and the lower contact (2), described sealing ring is installed in described valve and blocks up in the seal groove on (3).
4. a kind of secondary shutoff valve as claimed in claim 3 is characterized in that: the slips of described secondary plugging device (7) is stuck in the extension diameter section between top connection (1) and the lower contact (2), and supports by spring (8).
5. a kind of secondary shutoff valve as claimed in claim 4 is characterized in that: the space that relative motion is arranged in the extension diameter section of described secondary plugging device between top connection (1) and lower contact (2).
6. a kind of secondary shutoff valve as claimed in claim 5, it is characterized in that: described spring (8) is a flat spring, described slips (7) is gone up with the described corresponding side of groove that goes up mandrel (5) and is provided with elongated slot, and an end of described flat spring projection withstands in the described elongated slot.
7. a kind of secondary shutoff valve as claimed in claim 6 is characterized in that: the described quantity that goes up the axial elongated slot in mandrel (5) middle part is three, and equal and opposite in direction, evenly is provided with.
8. a kind of secondary shutoff valve as claimed in claim 7, it is characterized in that: the quantity of described slips (7) is three, the big or small and described equal and opposite in direction of going up the axial elongated slot in mandrel (5) middle part.
9. a kind of secondary shutoff valve as claimed in claim 1 is characterized in that: described top of going up mandrel (5) is outer hexagonal structure.
10. a kind of secondary shutoff valve as claimed in claim 1 is characterized in that: described lower contact (2) is blocked up on (3) with described valve and is evenly had six shear pin holes respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100433413A CN102134977A (en) | 2011-02-23 | 2011-02-23 | Secondary plugging valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100433413A CN102134977A (en) | 2011-02-23 | 2011-02-23 | Secondary plugging valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102134977A true CN102134977A (en) | 2011-07-27 |
Family
ID=44294885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100433413A Pending CN102134977A (en) | 2011-02-23 | 2011-02-23 | Secondary plugging valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102134977A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840343A (en) * | 2012-08-22 | 2012-12-26 | 扬中市阀门厂有限公司 | Novel supercritical or ultra-supercritical thermal power unit plug valve |
| CN106481308A (en) * | 2016-12-09 | 2017-03-08 | 中国石油集团西部钻探工程有限公司 | Method is entered under temporary blocking type big orifice bridging plug and production tube |
| CN106869908A (en) * | 2015-12-11 | 2017-06-20 | 中国石油天然气股份有限公司 | Tubing string |
| CN109779536A (en) * | 2019-04-08 | 2019-05-21 | 成都汉科石油技术有限公司 | For easily spraying the safe completion tubular column and installation method of leakiness reservoir |
| CN115306351A (en) * | 2022-09-14 | 2022-11-08 | 兰西县铭远石油设备制造有限公司 | Same diameter steel ball movement control valve core closing type plugging valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB285316A (en) * | 1927-07-25 | 1928-02-16 | William Chester Cushing | Improvements in or relating to plugs for oil wells |
| US6880642B1 (en) * | 2002-11-21 | 2005-04-19 | Jonathan Garrett | Well abandonment plug |
| CN201318149Y (en) * | 2008-12-17 | 2009-09-30 | 新疆华油油气工程有限公司 | Unidirectional inner blowout control pump-out type blanking plug |
-
2011
- 2011-02-23 CN CN2011100433413A patent/CN102134977A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB285316A (en) * | 1927-07-25 | 1928-02-16 | William Chester Cushing | Improvements in or relating to plugs for oil wells |
| US6880642B1 (en) * | 2002-11-21 | 2005-04-19 | Jonathan Garrett | Well abandonment plug |
| CN201318149Y (en) * | 2008-12-17 | 2009-09-30 | 新疆华油油气工程有限公司 | Unidirectional inner blowout control pump-out type blanking plug |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840343A (en) * | 2012-08-22 | 2012-12-26 | 扬中市阀门厂有限公司 | Novel supercritical or ultra-supercritical thermal power unit plug valve |
| CN102840343B (en) * | 2012-08-22 | 2014-03-26 | 扬中市阀门厂有限公司 | Novel supercritical or ultra-supercritical thermal power unit plug valve |
| CN106869908A (en) * | 2015-12-11 | 2017-06-20 | 中国石油天然气股份有限公司 | Tubing string |
| CN106481308A (en) * | 2016-12-09 | 2017-03-08 | 中国石油集团西部钻探工程有限公司 | Method is entered under temporary blocking type big orifice bridging plug and production tube |
| CN106481308B (en) * | 2016-12-09 | 2019-06-14 | 中国石油集团西部钻探工程有限公司 | Production tube tripping in method |
| CN109779536A (en) * | 2019-04-08 | 2019-05-21 | 成都汉科石油技术有限公司 | For easily spraying the safe completion tubular column and installation method of leakiness reservoir |
| CN115306351A (en) * | 2022-09-14 | 2022-11-08 | 兰西县铭远石油设备制造有限公司 | Same diameter steel ball movement control valve core closing type plugging valve |
| CN115306351B (en) * | 2022-09-14 | 2023-07-21 | 兰西县铭远石油设备制造有限公司 | Same diameter steel ball movement control valve core closing type shutoff valve |
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Application publication date: 20110727 |