CN2651435Y - Small well oil extracting packer of oil-gas field - Google Patents
Small well oil extracting packer of oil-gas field Download PDFInfo
- Publication number
- CN2651435Y CN2651435Y CN 200320110123 CN200320110123U CN2651435Y CN 2651435 Y CN2651435 Y CN 2651435Y CN 200320110123 CN200320110123 CN 200320110123 CN 200320110123 U CN200320110123 U CN 200320110123U CN 2651435 Y CN2651435 Y CN 2651435Y
- Authority
- CN
- China
- Prior art keywords
- lower piston
- packer
- righting
- cone
- gas field
- 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.)
- Expired - Fee Related
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a small well oil extracting packer of an oil-gas field, which comprises an upper joint, a lower joint, a central tube, a rubber cylinder, an upper piston inner cylinder, a lower piston inner cylinder, an upper piston outer cylinder and a lower piston outer cylinder, wherein the central tube and the piston inner cylinders are respectively provided with a hydraulic small hole. A righting mechanism which is composed of a righting cone and a righting ball is arranged between the lower piston inner cylinder and the lower piston outer cylinder. The inner side of the righting cone is provided with a plate-shaped open spring coil which is fixed by a limited cover. The inner side surface of the plate-shaped open spring coil is provided with concave-convex teeth which can be engaged with the concave-convex teeth arranged on the outer wall of the lower piston inner cylinder along with the slide of the righting cone. The lower part of the righting ball is provided with a ball-support joint connected with the lower piston outer cylinder. Though a packer is arranged in an inclined well pipe, the packer can be consistent with the well pipe in the axial direction, and accordingly the rubber cylinder of the packer is stressed uniformly in the radical direction to obtain the optimum sealing effect. The utility model is especially suitable for the oil-gas field with small well holes to use.
Description
(technical field)
The utility model relates to a kind of oil gas field slim-hole production packer that is used for the water layer of packing oil well, belongs to field of petroleum exploitation.
(background technology)
At present, the most of oil gas field of China has been developed the middle and later periods, in order to improve recovery ratio to underground residual oil, the general method of opening side window or boring multi-lateral well that adopts, and this slim-hole is the non-perpendicular well that constant slope is arranged mostly, this just makes between interior packer of pit shaft and the pit shaft and produces axial deviation, thereby influences packer to the water layer packing effect in the pit shaft.
(summary of the invention)
The purpose of this utility model provides the oil gas field slim-hole production packer that a kind of suitable minor diameter oil gas well uses, and it can automatically adjust the axial location of packer in the pit shaft of the oblique well of minor diameter, makes it axially consistent with well casing.
This oil gas field slim-hole production packer contains top connection, lower contact, central tube, packing element, on, the lower piston inner core, on, the lower piston urceolus, the packing retaining mechanism is conciliate sealing mechanism, central tube and piston inner core have the hydraulic pressure aperture, be provided with righting mechanism between lower piston inner core and the lower piston urceolus, this righting mechanism has one to set upright cone, the below of cone is placed with sets upright ball, tabular opening spring coil is equipped with in the inboard of setting upright cone, and fix with limited cover, the medial surface of tabular opening spring coil is provided with shaggy tooth, and can be with the slip of setting upright cone and the set shaggy tooth engagement of lower piston inner tank theca, there is a ball holder joint below of setting upright ball, this ball holder joint top links to each other with the lower piston urceolus, and the bottom is connected with lower contact to set pin.
The packing retaining mechanism of this packer is provided with by the jump ring circle of shaggy tooth by the surface to be formed with the shaggy tooth of the upper piston urceolus that can be engaged with.
The sealing mechanism of separating of this packer is made up of clip spring seat reconciliation offset nail, and clip spring seat is by the lateral surface of deblocking dowel fixes at the upper piston inner core, and said jump ring circle is fixed on this clip spring seat.
When packer setting, in oil pipe, apply hydraulic pressure, hydraulic pressure upwards slides and the axial compression packing element upper and lower piston urceolus, makes it expanded radially; Until the shaggy tooth engagement of retaining mechanism, packing element is locked in pressured state, reaches the packing purpose.Simultaneously, when the lower piston outer sleeve moves upward, setting pin is cut off, steel ball is driven and is in the state of setting upright, even in oblique well casing, packer also can reach axial consistent with well casing, thereby makes the packing element radial force of packer even, reach the optimal seal effect, be particularly suitable for the oil gas field slim-hole and use.
(description of drawings)
Fig. 1 is the structure chart of oil gas field slim-hole production packer.
Fig. 2 is Fig. 1 Lower Half structure enlarged drawing.
Fig. 1 is that this packer construction is always schemed, and number in the figure 1 is top connection, the 4th, and central tube, the 5th, packing element, the central tube lower end connects upper piston inner core 9, lower piston inner core 14 and lower contact 21 successively; The 2nd, sand prevention apron, the 3rd, apron support set; Packing element below connects upper piston urceolus 8, lower piston urceolus 13, ball holder joint 19 successively, is connected to set pin 20 between ball holder joint 19 and the lower contact 21.Amplify referring to Fig. 2, upper piston inner core 9 tops are with a clip spring seat 12, and fixing with deblocking pin 10; Be fixed with a jump ring circle 11 on the clip spring seat, these jump ring circle 11 lateral surfaces are provided with shaggy tooth 11-1, and the medial surface of lower piston urceolus 13 is provided with shaggy tooth 13-1; When lower piston urceolus 13 upwards slides into jump ring circle 11 positions, the shaggy tooth 13-1 locking that is meshed with shaggy tooth 11-1.Righting mechanism comprises to be set upright steel ball 18, sets upright cone 17, tabular opening ring spring 16 and limited cover 15, and the medial surface of tabular opening spring coil is provided with shaggy tooth 16-1, and the shaggy tooth 14-1 of it and lower piston inner core 14 lateral surfaces is engageable.
The operating principle of this packer is as follows:
This packer is formed separate-layer production string with downhole tools such as minor diameter detachable bridge plug, minor diameter ball-and-seat, minor diameter screen casings.Packer is arrived the design position down, when packer setting, in oil well, apply hydraulic pressure, hydraulic pressure acts on respectively on upper piston urceolus 8 and the lower piston urceolus 13 through hydraulic pressure aperture 22 on the central tube 4 and the hydraulic pressure aperture 23 on the upper piston inner core 9, this two-piston urceolus is upwards slided, and packing element 5 causes expanded radially promptly by axial compression, until the tooth 13-1 and the tooth 1-1 engagement of lower piston urceolus 13, packing element 5 is locked to the compression seal state.Ball holder joint 19 is driven simultaneously, cuts off and will set pin 20; Subsequently, setting upright steel ball 18 sets upright on the cone 17 to moving and acting on, make and set upright cone 17, limited cover 15, tabular opening ring spring 16 and move upward, the extremely shaggy tooth 14-1 engagement of shaggy tooth 16-1 and lower piston inner core 14 on the tabular opening ring spring 16, each steel ball 18 is subjected to the radial thrust of cone 17 when moving upward, and this radial load is passed to lower piston urceolus 13, thereby reach the purpose of setting upright.
When this packer needs deblocking, the upper lifting pipe post, top connection 1, central tube 4, upper piston inner core 9, lower piston inner core 14, lower contact 21 are moved upward together, because upper piston urceolus 8, lower piston urceolus 13 transfixion under packing element 5 frictional force effects, and lower piston urceolus 13 makes ring spring 11, clip spring seat 12, deblocking pin 10 transfixions simultaneously, therefore deblocking pin 10 is cut off, and packing element 5 deblocking under self elastic force effect is regained, and packer can trip out.
Claims (3)
1. oil gas field slim-hole production packer, contain top connection, lower contact, central tube, packing element, it is characterized in that also comprising, the lower piston inner core, on, the lower piston urceolus, the packing retaining mechanism is conciliate sealing mechanism, central tube and piston inner core have the hydraulic pressure aperture, be provided with righting mechanism between lower piston inner core and the lower piston urceolus, this righting mechanism has one to set upright cone, the below of cone is placed with sets upright ball, tabular opening spring coil is equipped with in the inboard of setting upright cone, and fixes with limited cover, and the medial surface of tabular opening spring coil is provided with shaggy tooth, and can be with the slip of setting upright cone and the set shaggy tooth engagement of lower piston inner tank theca, there is a ball holder joint below of setting upright ball, and this ball holder joint top links to each other with the lower piston urceolus, and the bottom is connected with lower contact to set pin.
2. according to the oil gas field slim-hole production packer of claim 1, it is characterized in that said retaining mechanism is provided with by the shaggy tooth of the jump ring circle of shaggy tooth and the upper piston urceolus that can be engaged with by the surface to form.
3. according to the oil gas field slim-hole production packer of claim 2, it is characterized in that the said sealing mechanism of separating conciliates the offset nail by clip spring seat and form, clip spring seat is by the lateral surface of deblocking dowel fixes at the upper piston inner core, and said jump ring circle is fixed on this clip spring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110123 CN2651435Y (en) | 2003-10-14 | 2003-10-14 | Small well oil extracting packer of oil-gas field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110123 CN2651435Y (en) | 2003-10-14 | 2003-10-14 | Small well oil extracting packer of oil-gas field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651435Y true CN2651435Y (en) | 2004-10-27 |
Family
ID=34343519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320110123 Expired - Fee Related CN2651435Y (en) | 2003-10-14 | 2003-10-14 | Small well oil extracting packer of oil-gas field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651435Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165309B (en) * | 2006-10-18 | 2011-08-10 | 刘宜贵 | Compression type packer |
| CN105019857A (en) * | 2015-07-18 | 2015-11-04 | 阜宁县宏达石化机械有限公司 | Sealed liquid injection device |
| CN105089544A (en) * | 2015-08-31 | 2015-11-25 | 中国石油天然气股份有限公司 | Pressure-bearing sleeve protection packer |
-
2003
- 2003-10-14 CN CN 200320110123 patent/CN2651435Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165309B (en) * | 2006-10-18 | 2011-08-10 | 刘宜贵 | Compression type packer |
| CN105019857A (en) * | 2015-07-18 | 2015-11-04 | 阜宁县宏达石化机械有限公司 | Sealed liquid injection device |
| CN105089544A (en) * | 2015-08-31 | 2015-11-25 | 中国石油天然气股份有限公司 | Pressure-bearing sleeve protection packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |