CN201908613U - Opening valve type expansion packer - Google Patents
Opening valve type expansion packer Download PDFInfo
- Publication number
- CN201908613U CN201908613U CN 201020685541 CN201020685541U CN201908613U CN 201908613 U CN201908613 U CN 201908613U CN 201020685541 CN201020685541 CN 201020685541 CN 201020685541 U CN201020685541 U CN 201020685541U CN 201908613 U CN201908613 U CN 201908613U
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- opening valve
- central tube
- cartridge
- open
- opening
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Abstract
The utility model relates to an opening valve type expansion packer, which is mainly used for staged fracturing construction of a horizontal well of an oil-gas field, and comprises an upper joint, a control sleeve, a center pipe, an opening valve sleeve, an opening valve core, a check valve, a connector, a sealed rubber cylinder, a sealed joint, a lower joint, and the like, wherein the opening valve is combined with the check valve for use, so as to control the opening pressure of the packer within a range similar to a setting pressure, and effectively prevent the packer from being prematurely set during the well-descending process; the check vale enables the liquid to unidirectionally flow into the sealed rubber cylinder and prevent backflow; and at a later stage, when a pressure difference slide bushing is opened and the pressure fracture operation is performed, as the pressure suddenly increases, liquid can be continuously pumped into the sealed rubber cylinder through the check valve, thereby enabling the rubber cylinder to be sufficiently expanded and have better sealing performance. The opening valve type expansion packer has a simple structure and is convenient to operate.
Description
Technical field
The utility model relates to a kind of opening valve formula expansion packer, is mainly used in oil gas field horizontal well in segments pressing crack construction, belongs to the wellbore operations construction tool in the fractured horizontal well construction.
Background technology
At present, the inflatable packer of using in the oil-gas field fracturing process pipe string mainly is ball-and-seat formula or the valve structure at straight well or the design of inclined shaft staged fracturing, and has deblocking device etc.But for the horizontal well in segments pressure break, the operating position of inflatable packer is in the horizontal bare hole section, shaft bottom situation complexity, strata pressure height, be lowered in the process because the effect ratio of strata pressure is easier to premature setting, make troubles to construction, because the bore hole section stratum too short words of inhomogeneous cartridge can cause sealing performance bad, set not exclusively simultaneously, influence the pressing crack construction operation in later stage.
The utility model content
The purpose of this utility model is to provide a kind of opening valve formula expansion packer, this expansion packer is with opening valve and ball-and-seat combination utilization, the opening pressure of packer is controlled at approaches to set pressure, can effectively prevent the phenomenon that packer is opened in advance and set in the process of going into the well, ball-and-seat can make unidirectional inflow cartridge of liquid and anti-backflow, when opening pressure reduction sliding sleeve and fracturing work in the later stage, along with increasing suddenly of pressure, continuation is by ball-and-seat unidirectional pumping liquid in cartridge, packing element is fully expanded, better tightness.The structure design of long cartridge can realize with the bore hole stratum bigger contact area being arranged, and realizes sealing fully, and can realize high temperature resistant, high voltage bearing performance.
The utility model adopts following technical scheme, be that a kind of opening valve formula expansion packer is by top connection, the control cover, central tube, open valve pocket, open spool, ball-and-seat, connector, cartridge, seal nipple, lower contact constitutes, the last end interface that it is characterized in that top connection is the box interface, the following end interface inwall of top connection is the box joint, the following end interface outer wall of top connection is male joint, the box joint connects central tube downwards, male joint connects the control cover downwards, the control cover connects down opens valve pocket, opening the valve pocket lower end is connected with the top of connector, outside central tube, overlap with control, open in the annular space between the valve pocket unlatching spool is housed, open spool and be connected with ball-and-seat downwards, in the annular space bottom mounting spring that connector and central tube surround, spring supports O type ring, O type ring top is connected with the ball-and-seat bottom, the following center tube wall outer wall of connector is equipped with cartridge, cartridge upwards is threaded with connector, cartridge is threaded with seal nipple downwards, and the bottom that central tube leans out seal nipple is threaded with lower contact.
Opening valve plays the control opening pressure, liquid is by the unidirectional inflow cartridge of ball-and-seat, setting after the pressure release that finishes ball-and-seat blocks passage and prevents that liquid from refluxing, when carrying out fracturing work after a while, produce high pressure and can continue, thereby make more firm that cartridge sets by ball-and-seat pumping liquid in cartridge.
Above-mentioned opening valve formula expansion packer has inlet opening on the central tube at its opening valve place, opens spool and blocks inlet opening, opens on the spool shear pin is housed, and on the piston of unlatching spool the O RunddichtringO is housed.When fluid pressure reaches certain value, produce axial force and cut off shear pin and spool is moved to the left and exposes inlet opening, make liquid enter ball-and-seat by inlet opening to spool.The structure that adopts opening valve to add ball-and-seat improves the control to the packer opening pressure, prevents the premature setting phenomenon in the process of going into the well.
Adopt opening valve and ball-and-seat to control opening pressure jointly, liquid enters opening valve by the inlet opening on the central tube, when reaching certain value, pressure cuts off shear pin on the spool, opening valve is opened, the orifice flow of liquid on opening valve is to ball-and-seat simultaneously, liquid flows to cartridge through ball-and-seat and makes the packing element expansion after ball-and-seat is opened, and it is set fully, reaches the purpose of packing well layer.
The cartridge of inflatable packer of the present utility model, its cartridge section is long, in the contact area of the effective increase of bore hole Duan Nenggeng with the stratum, improves sealing performance.Cartridge comprises that interior capsule, middle steel band, outer packing element constitute.
Opening valve adds the structure of ball-and-seat, can guarantee that packer can premature setting in the process of going into the well.Therefore according to the needs of horizontal well in segments pressure break, removed the needed deblocking device of conventional in the past packer, prevented to set and finish the back owing to down-hole bore hole section circumstance complication causes the automatic deblocking of packer.
Inflatable packer of the present utility model adopts opening valve to add the ball-and-seat structure, effectively avoids go into the well premature setting phenomenon when packer does not reach projected depth in the process of tubing string; This packer has advantages such as high temperature resistant, high pressure resistant simultaneously; The utility model is simple in structure, and is easy to operate, and it is technical to be mainly used in oil gas field horizontal well in segments fracturing technology.
Description of drawings
Fig. 1 is a structural front view of the present utility model;
Among the figure: top connection 1, control cover 2, central tube 3, unlatching spool 4, unlatching valve pocket 5, O RunddichtringO 6, ball-and-seat 7, O type ring 8, spring 9, connector 10, cartridge 11, seal nipple 12, lower contact 13.
The specific embodiment
Below in conjunction with accompanying drawing, structure of the present utility model is further specified, as shown in Figure 1, opening valve formula expansion packer is by top connection 1, control cover 2, central tube 3, open valve pocket 5, open spool 4, ball-and-seat 7, connector 10, cartridge 11, seal nipple 12, lower contact 13 constitutes, the last end interface that it is characterized in that top connection 1 is the box interface, the following end interface inwall of top connection 1 is the box joint, the following end interface outer wall of top connection 1 is male joint, the box joint central tube 3 that is threaded downwards, male joint is threaded downwards and controls cover 2, the control cover is equipped with for 2 times opens valve pocket 5, the lower end of opening valve pocket 5 is connected with the top of connector 10, outside central tube 3, overlap 2 with control, open to be equipped with in the annular space between the valve pocket 5 and open spool 4, open spool 4 and be connected with ball-and-seat 7 downwards, in the annular space bottom mounting spring 9 that connector 10 and central tube 3 surround, spring 9 supports O type ring 8, the top of O type ring 8 is connected with ball-and-seat 7 bottoms, central tube 3 outer walls of connector below 10 are equipped with cartridge 11, cartridge 11 upwards is threaded with connector 10, cartridge 11 is threaded with seal nipple 12 downwards, and the bottom that central tube 3 leans out seal nipple 12 is threaded with lower contact 13.
Above-mentioned opening valve formula expansion packer has inlet opening on the central tube at its opening valve place, opens spool 4 and blocks inlet opening, opens on the spool 4 shear pin is housed, and on the piston of unlatching spool 4 O RunddichtringO 6 is housed.
Above-mentioned opening valve formula expansion packer, its cartridge 11 is made of interior capsule, middle steel band and outer packing element.
Claims (3)
1. an opening valve formula expansion packer is by top connection (1), control cover (2), central tube (3), open valve pocket (5), open spool (4), ball-and-seat (7), connector (10), cartridge (11), seal nipple (12), lower contact (13) constitutes, the last end interface that it is characterized in that top connection (1) is the box interface, the following end interface inwall of top connection (1) is the box joint, the following end interface outer wall of top connection (1) is male joint, the box joint central tube (3) that is threaded downwards, male joint is threaded downwards and controls cover (2), be equipped with under the control cover (2) and open valve pocket (5), the lower end of opening valve pocket (5) is connected with the top of connector (10), outside central tube (3), overlap (2) with control, open to be equipped with in the annular space between the valve pocket (5) and open spool (4), open spool (4) and be connected with ball-and-seat (7) downwards, in the annular space bottom mounting spring (9) that connector (10) and central tube (3) surround, spring (9) supports O type ring (8), the top of O type ring (8) is connected with ball-and-seat (7) bottom, following central tube (3) outer wall of connector (10) is equipped with cartridge (11), cartridge (11) upwards is threaded with connector (10), cartridge (11) is threaded with seal nipple (12) downwards, and the bottom that central tube (3) leans out seal nipple (12) is threaded with lower contact (13).
2. opening valve formula expansion packer as claimed in claim 1, it is characterized in that having inlet opening on central tube (3) tube wall at opening valve place, open spool (4) and block inlet opening, open on the spool (4) shear pin is housed, on the piston of unlatching spool (4) O RunddichtringO (6) is housed.
3. opening valve formula expansion packer as claimed in claim 1 is characterized in that cartridge (11) is made of interior capsule, middle steel band and outer packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020685541 CN201908613U (en) | 2010-12-23 | 2010-12-23 | Opening valve type expansion packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020685541 CN201908613U (en) | 2010-12-23 | 2010-12-23 | Opening valve type expansion packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908613U true CN201908613U (en) | 2011-07-27 |
Family
ID=44300816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020685541 Expired - Lifetime CN201908613U (en) | 2010-12-23 | 2010-12-23 | Opening valve type expansion packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908613U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033126A (en) * | 2014-05-14 | 2014-09-10 | 天津市滨海新区龙新石油机械制造有限公司 | Self-locking sealed type washable well packer capable of expanding through hydraulic power |
| CN104141469A (en) * | 2014-07-25 | 2014-11-12 | 中国石油化工股份有限公司 | Continuous oil pipe dragging layering fracturing packer |
| CN105134126A (en) * | 2015-05-08 | 2015-12-09 | 中国石油集团渤海钻探工程有限公司 | Remote controlled packer capable of preventing pre-mature packing |
| CN105370241A (en) * | 2014-08-29 | 2016-03-02 | 中国石油化工股份有限公司 | Packing device and method during drilling for abandoning well |
| CN106639964A (en) * | 2017-03-10 | 2017-05-10 | 西南石油大学 | High leakproofness shoulder-protrusion resistant compression type packer |
| CN107724993A (en) * | 2017-11-27 | 2018-02-23 | 李明 | It is a kind of can desealed water-swelling packer application method |
| CN107762441A (en) * | 2017-11-03 | 2018-03-06 | 西南石油大学 | A kind of inflatable packer |
| CN107780872A (en) * | 2017-11-03 | 2018-03-09 | 西南石油大学 | A kind of pneumatic inflatable packer of Oil/gas Well |
| CN111441739A (en) * | 2020-04-30 | 2020-07-24 | 大庆宏升石油机械设备制造有限公司 | Mechanical compression type tubular column switch type packer |
-
2010
- 2010-12-23 CN CN 201020685541 patent/CN201908613U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033126A (en) * | 2014-05-14 | 2014-09-10 | 天津市滨海新区龙新石油机械制造有限公司 | Self-locking sealed type washable well packer capable of expanding through hydraulic power |
| CN104033126B (en) * | 2014-05-14 | 2016-08-17 | 天津市滨海新区龙新石油机械制造有限公司 | Hydraulic expansion self-locking sealing type well flushing able packer |
| CN104141469A (en) * | 2014-07-25 | 2014-11-12 | 中国石油化工股份有限公司 | Continuous oil pipe dragging layering fracturing packer |
| CN104141469B (en) * | 2014-07-25 | 2016-06-29 | 中国石油化工股份有限公司 | Coiled tubing drags separate stratum fracturing packer |
| CN105370241A (en) * | 2014-08-29 | 2016-03-02 | 中国石油化工股份有限公司 | Packing device and method during drilling for abandoning well |
| CN105370241B (en) * | 2014-08-29 | 2018-08-10 | 中国石油化工股份有限公司 | It is a kind of for abandoned well with boring packing device and method |
| CN105134126A (en) * | 2015-05-08 | 2015-12-09 | 中国石油集团渤海钻探工程有限公司 | Remote controlled packer capable of preventing pre-mature packing |
| CN106639964A (en) * | 2017-03-10 | 2017-05-10 | 西南石油大学 | High leakproofness shoulder-protrusion resistant compression type packer |
| CN107762441A (en) * | 2017-11-03 | 2018-03-06 | 西南石油大学 | A kind of inflatable packer |
| CN107780872A (en) * | 2017-11-03 | 2018-03-09 | 西南石油大学 | A kind of pneumatic inflatable packer of Oil/gas Well |
| CN107724993A (en) * | 2017-11-27 | 2018-02-23 | 李明 | It is a kind of can desealed water-swelling packer application method |
| CN111441739A (en) * | 2020-04-30 | 2020-07-24 | 大庆宏升石油机械设备制造有限公司 | Mechanical compression type tubular column switch type packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |
|
| CX01 | Expiry of patent term |