CN201794563U - Selective production string optionally adjustable within four layers - Google Patents
Selective production string optionally adjustable within four layers Download PDFInfo
- Publication number
- CN201794563U CN201794563U CN2010202808458U CN201020280845U CN201794563U CN 201794563 U CN201794563 U CN 201794563U CN 2010202808458 U CN2010202808458 U CN 2010202808458U CN 201020280845 U CN201020280845 U CN 201020280845U CN 201794563 U CN201794563 U CN 201794563U
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- valve body
- sliding sleeve
- string
- controller
- annular groove
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Abstract
The utility model relates to a selective production string optionally adjustable within four layers in the oil well layered production of an oil patch, mainly solving the problems of the conventional selective production string such as easily confused on-off state and difficult construction. The selective production string is characterized in that an underground switch (4) is pre-arranged at the lower part of a packer (3) according to layer demands, and is matched with a switch controller (6) on a poking rod (5). By adopting the selective production string, the full hole string is not changed to complete layered or full-zone production in water plugging or selectively change production layer. The selective production string has the advantages of simple design, reliability in operation, low manufacturing cost, and low labor intensity.
Description
Technical field
The utility model relates to a kind of a kind of flow string that is applied in the oilfield layerwise production, specifically a kind of under the situation of motionless full well casing post, four layer positions with adjustable selective flow string arbitrarily in a kind of four layers of any single or multiple lift combinations produce of interior selection.
Background technology
Look for during water blockoff produces in the routine in oil field at present, using more is mechanical water searching and blocking technology, and mechanical water searching and blocking looks for water blockoff separately to carry out layering, look for, change behind the plug water construction layer and need an operation again, make and look for the plug water construction workload to increase, efficiency of construction is low, and effectively sealing ratiod is low.Along with field produces enters middle and advanced stage, the moisture content of crude oil constantly rises, cost, engineering reliability and convenience to the oil well delamination production technology propose higher requirement, and develop towards the integrated direction of water detection, water blockoff and flow string gradually, under the situation that is implemented in motionless flow string, finish water detection, water blockoff, layering or close layer production, and can selectively change the producing zone position according to producing needs.In order satisfy to produce needs, occur intellectuality in recent years and looked for water-plugging technique, can realize that water detection, water blockoff and flow string are integrated, but the cost of production height, and be disposable, and have that the switch state of a control is blured, the problem of reset function difference.
The utility model content
For under the situation of motionless full well casing post, several layers of position with any single or multiple lift combinations produce of interior selection, the utility model provides any adjustable selective flow string in a kind of four layers, this selective flow string is under the situation of motionless full well casing post, can look for water blockoff production with any single or multiple lift combination of interior selection four layer positions, switch has reset function, can avoid on off state fuzzy, and simplicity of design, reliable, the low production cost of operation.
For achieving the above object, any adjustable selective flow string comprises flow string and the tubing string of giving up in four layers that the utility model provides, flow string comprises screen casing and the tapping pin that is connected successively with oil well pump, floatless switch controller successively on the tapping pin, the tubing string of giving up comprises packer and the down-hole switch that is preset at perforated interval; Wherein said down-hole switch is preset at the bottom of packer by the needs of producing zone position and quantity, cooperatively interacts with the on-off controller that is fixed on the tapping pin;
And described on-off controller upper and lower side has inside and outside connecting thread respectively, and on the cylindrical shaft shoulder is arranged;
Described down-hole switch mainly comprises top connection, upper valve body, descends valve body, sliding sleeve and spacing elastic claw, and wherein top connection connects upper valve body and following valve body successively; One annular groove is arranged on the outer wall of upper valve body, and the annular groove place has the ladder valve opening that parallels to the axis to communicate with the centre bore of upper valve body, is equipped with spring and valve ball in the ladder valve opening up and down, and the hypomere aperture of ladder valve opening and valve ball diameter difference are negative value; On the inwall of following valve body annular groove is arranged, the described hole of valve body down is built-in with sliding sleeve, can carry it by on-off controller moves up and down, and sliding sleeve hypomere wall has the radially groove that parallels to the axis, and fixed limit elastic claw on the outer wall of sliding sleeve, the concaveconvex shape of annular groove coincide mutually on fin on the spacing elastic claw pawl head and the following valve interior wall.
Be equipped with seal A between sliding sleeve and top connection inwall, and be equipped with seal B between the upper valve body inwall; Be equipped with sealing ring A between upper valve body and top connection, and be equipped with sealing ring B between following valve body.
The utility model compared with prior art, has following beneficial effect: because on-off controller is installed on tapping pin, and the position of on-off controller is to be provided with respect to fixing down-hole switch according to the needs of producing zone position and quantity, by moving up and down of flow string, make tapping pin drive that on-off controller on it moves up and down in down-hole switch and gauge tap in sliding sleeve move up and down, thereby close or open the notch cuttype valve opening of upper valve body in the switch, make the centre bore and the outside conducting of down-hole switch or close; And the quantity of down-hole switch and on-off controller is corresponding with the layer position that will control, thereby realized under the motionless full well casing post situation, by on carry or transfer flow string, just can control the Kai Heguan of four layers with interior any single or multiple lift position, realize the water blockoff of looking for of each layer position, reach the purpose of selecting the exploitation random layer; And this switch resets switch by moving on the flow string, can avoid the fuzzy problem of on off state to take place; The utility model simplicity of design, operation is reliable, low production cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of sequence number 6 down-hole switch controllers in the accompanying drawing 1;
Fig. 3 is the open mode structural representation of sequence number 4 down-hole switchs in the accompanying drawing 1;
Fig. 4 is the structural representation of sequence number 12 upper valve bodies in the accompanying drawing 3;
Fig. 5 is the closed condition structural representation of sequence number 4 down-hole switchs in the accompanying drawing 1.
1-oil well pump among the figure, 2-screen casing, 3-packer, 4-down-hole switch, the 5-tapping pin, 6-on-off controller, 7-top connection, 8-sealing ring A, 9-seal A, 10-spring, 11-steel ball, 12-upper valve body, 13-seal B, 14-sealing ring B, valve body under the 15-, the spacing elastic claw of 16-, the 17-sliding sleeve, the 18-shaft shoulder, 19-ladder valve opening, the 20-annular groove, the 21-annular groove, 22-is groove radially.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, selective flow string adjustable arbitrarily in these four layers is made up of the flow string and the tubing string two large divisions that gives up, flow string connects screen casing 2 by oil well pump 1, and screen casing 2 connects tapping pins 5, and that presses the producing zone position on the tapping pin 5 need be at diverse location floatless switch controller 6 successively; The tubing string of giving up is made up of packer 3 and down-hole switch 4, and when giving up under the tubing string perforated interval, fixedly packer 3, and down-hole switch 4 is preset at the bottom of packer 3 by the needs of layer position, cooperatively interacts with on-off controller 6 on the tapping pin 5; And 4 at least 4 of packer 3 and down-hole switchs, and 6 at least 3 of down-hole switch controllers; Its state that opens or closes of down-hole switch 4 is determined by the direction that on-off controller 6 passes through, the rule that opens or closes of control down-hole switch 4 is: on-off controller 6 up during by down-hole switch 4 switch close, descending when the down-hole switch 4 switch opens, realize the water detection and the water blockoff of each layer, reach the purpose of selecting the exploitation random layer.Simultaneously can by on carry flow string and realize resetting to original state, avoid the fuzzy problem of on off state.In addition, when tripping out flow string, owing to carry on the tubing string, switch cuts out, when operation, the down-hole switch 4 in the tubing string of giving up also has the anti-pollution function of blowout prevention like this.
Described on-off controller 6, as shown in Figure 2, upper and lower side has respectively the shaft shoulder 18 on inside and outside connecting thread and the cylindrical, and is fixed on successively on the tapping pin 5 by internal and external threads.
Described down-hole switch 4 as shown in Figures 3 and 4, mainly comprise top connection 7, upper valve body 12, following valve body 15, sliding sleeve 17 and spacing elastic claw 16, wherein the inner hole thread of top connection 7 connects the top oil pipe, external screw thread connects upper valve body 12, upper valve body 12 lower end internal threads connect valve body 15 down, and the lower end of following valve body 15 is connected with the bottom oil pipe; One annular groove 20 is arranged on the outer wall of upper valve body 12, and there is the up big and down small ladder valve opening 19 that parallels to the axis at annular groove 20 places, and the axial step valve opening 19 on the upper valve body 12 is along circumferentially distributing, and ladder valve opening 19 communicates with the centre bore of upper valve body 12, as shown in Figure 4.Ladder valve opening 19 can be a plurality of and radial distribution, the big footpath of ladder valve opening 19 is built-in with valve ball 11 and spring 10, and valve ball 11 is following, spring 10 is last, and the hypomere diameter of ladder valve opening 19 is littler than the diameter of valve ball 11, under the pressure effect of spring 10, valve ball 11 is sitting on the path shoulder of ladder valve opening 19, make the not conducting of outside of centre bore and down-hole switch 4 of upper valve body 12, when the pressure of down-hole switch 4 outsides during greater than the pressure of spring 10, can upwards back down valve ball 11, the centre bore conducting of ladder valve opening 19 and upper valve body 12, thus down-hole switch 4 and outside conducting made; The inwall of described down valve body 15 has up and down radially annular groove 21 of twice, and the hole of following valve body 15 is built-in with sliding sleeve 17, can carry it by on-off controller 6 moves up and down, and have the radially groove 22 that parallels to the axis on the sliding sleeve 17 hypomere walls, make the lower end of sliding sleeve 17 radially flexible, and screw thread fixed limit elastic claw 16 on the outer wall of sliding sleeve 17, there is the concaveconvex shape of the annular groove 21 on fin and following valve body 15 inwalls to coincide mutually on the pawl head of spacing elastic claw 16, when making the corresponding position of pawl head that sliding sleeve 17 moves axially to spacing elastic claw 16 and annular groove 21, sliding sleeve 17 relative fixed.When sliding sleeve 17 moves up, and 7 of top connections are by seal A9 sealing, and are sealed by seal B13 between the inwall of upper valve body 12; 7 of upper valve body 12 and top connections are simultaneously sealed by sealing ring A8, and 15 of following valve bodies are sealed by sealing ring B14.
Work original state the time be closed condition, as shown in Figure 5, the pawl head fastening of the spacing elastic claw 16 on sliding sleeve 17 outer walls is in the upper track annular groove 21 of following valve body 15 inwalls, 7 of the top of sliding sleeve 17 and top connections are sealed by seal A9, and seal by seal B13 between the inwall of upper valve body 12, this moment, the centre bore and the switch external of down-hole switch 4 were obstructed, were in closed condition.
When needs are opened down-hole switch 4, tapping pin 5 is descending, the on-off controller 6 that is fixed on the tapping pin 5 enters in the centre bore of down-hole switch 4, the shaft shoulder 18 on the on-off controller 6 withstands on the boss of sliding sleeve 17 lower ends, on-off controller 6 is under the effect of tapping pin 5 descending power, force the spacing elastic claw 16 on sliding sleeve 17 outer walls to shrink, it is descending that on-off controller 6 heads on sliding sleeve 17,21 pairs of following road annular grooves on the pawl head of the spacing elastic claw 16 on sliding sleeve 17 outer walls and following valve body 12 inwalls at once, the pawl head of spacing elastic claw 16 sticks in the annular groove 21, and sliding sleeve 17 stops to move, and tapping pin 5 continues descending, force the lower end of sliding sleeve 17 to be opened, on-off controller 6 passes through by force, and at this moment the pressure of valve body outside backs down the valve ball 11 on upper valve body 12 walls, the centre bore of valve body and outside conducting, switch opens, as shown in Figure 3.Tapping pin 5 continues descending, can make a plurality of on-off controllers 6 by force by pairing a plurality of down-hole switchs 4, realizes control multilayer position down-hole switch 4, and it is opened.
In the time of need closing down-hole switch 4, as shown in Figure 5, tapping pin 5 is up, it is up to drive on-off controller 6, when the shaft shoulder 18 of on-off controller 6 withstands on the bottom of sliding sleeve 17, on-off controller 6 is under the effect of tapping pin 5 up power, it is up to head on sliding sleeve 17, force the spacing elastic claw 16 on sliding sleeve 17 outer walls to shrink, it is up to follow sliding sleeve 17, when sliding sleeve 17 is up run into top connection 7 spacing after, the pawl head of at this moment spacing elastic claw 16 just sticks into down in the upper track annular groove 21 of valve body 15 inwalls, at this moment the centre bore of upper valve body 12 and ladder valve opening 19 are cut off by sliding sleeve 17, and this moment, down-hole switch 4 was closed.If it is up that tapping pin 5 continues, can make a plurality of on-off controllers 6 by force by pairing a plurality of down-hole switchs 4, realize control multilayer position down-hole switch 4, it is closed.
This selective flow string can also reset switch by moving on its flow string, avoids on off state fuzzy; By moving up and down of tapping pin 5, drive down-hole switch controller 6 and open or close one or several down-hole switch 4, realizes that four layer positions look for water blockoff and water blockoff with any single or multiple lift combination of interior selection, reach the purpose of selecting to exploit random layer.The utility model simplicity of design, operation is reliable, low production cost.
Claims (4)
1. adjustable selective flow string arbitrarily in a kind four layers, comprise flow string and the tubing string of giving up, flow string comprises screen casing (2) and the tapping pin (5) that is connected successively with oil well pump (1), floatless switch controller (6) successively on the tapping pin (5), the tubing string of giving up comprises packer (3) and the down-hole switch (4) that is preset at perforated interval, it is characterized in that: described down-hole switch (4) is preset at the bottom of packer (3) by the needs of producing zone position and quantity, cooperatively interacts with the on-off controller (6) that is fixed on the tapping pin (5);
And described on-off controller (6) upper and lower side has inside and outside connecting thread respectively, and on the cylindrical shaft shoulder is arranged (18);
Described down-hole switch (4) mainly comprises top connection (7), upper valve body (12), following valve body (15), sliding sleeve (17) and spacing elastic claw (16), and wherein top connection (7) connects upper valve body (12) successively and reaches valve body (15) down; One annular groove (20) is arranged on the outer wall of upper valve body (12), the ladder valve opening (19) that annular groove (20) is located to parallel to the axis communicates with the centre bore of upper valve body (12), be equipped with spring (10) and valve ball (11) in the ladder valve opening (19) up and down, and the hypomere aperture of ladder valve opening (19) and valve ball (11) diameter difference are negative value; And on the inwall of valve body (15) annular groove (21) is arranged down, and be built-in with sliding sleeve (17) in the hole of described valve body (15) down, can carry it by on-off controller (6) moves up and down, and have the radial slot logical (22) that parallels to the axis on sliding sleeve (17) the hypomere wall, and the outer wall fixed limit elastic claw (16) of sliding sleeve (17), the concaveconvex shape of the annular groove (21) on fin on spacing elastic claw (16) the pawl head and following valve body (15) inwall coincide mutually.
2. any adjustable selective flow string in four layers according to claim 1 is characterized in that: the axial step valve opening (19) on the upper valve body (12) is along circumferentially distributing.
3. any adjustable selective flow string in four layers according to claim 2 is characterized in that: the annular groove (21) on following valve body (15) inwall is 2 up and down.
4. any adjustable selective flow string is characterized in that: be equipped with seal A (9) between sliding sleeve (17) and top connection (7) inwall, and be equipped with seal B (13) between upper valve body (12) inwall in four layers according to claim 3; Be equipped with sealing ring A (8) between upper valve body (12) and top connection (7), and be equipped with sealing ring B (14) between following valve body (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202808458U CN201794563U (en) | 2010-07-29 | 2010-07-29 | Selective production string optionally adjustable within four layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202808458U CN201794563U (en) | 2010-07-29 | 2010-07-29 | Selective production string optionally adjustable within four layers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794563U true CN201794563U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202808458U Expired - Fee Related CN201794563U (en) | 2010-07-29 | 2010-07-29 | Selective production string optionally adjustable within four layers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794563U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563947A (en) * | 2014-12-22 | 2015-04-29 | 中国石油天然气股份有限公司 | Downhole blowout preventing pipe column for oil well |
| CN104612636A (en) * | 2015-01-22 | 2015-05-13 | 中国石油大学(华东) | Automatic underground layer change device for oil well multilayer exploitation |
| CN105473810A (en) * | 2013-08-30 | 2016-04-06 | 兰德马克绘图国际公司 | Method, system, and optimization technique to improve oil reservoir recovery in the water-alternating-gas injection process by using downhole control valves (WAG-CV) |
| CN104481460B (en) * | 2014-11-18 | 2017-02-22 | 梁伟成 | Large pump oil pumping system |
-
2010
- 2010-07-29 CN CN2010202808458U patent/CN201794563U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105473810A (en) * | 2013-08-30 | 2016-04-06 | 兰德马克绘图国际公司 | Method, system, and optimization technique to improve oil reservoir recovery in the water-alternating-gas injection process by using downhole control valves (WAG-CV) |
| CN104481460B (en) * | 2014-11-18 | 2017-02-22 | 梁伟成 | Large pump oil pumping system |
| CN104563947A (en) * | 2014-12-22 | 2015-04-29 | 中国石油天然气股份有限公司 | Downhole blowout preventing pipe column for oil well |
| CN104612636A (en) * | 2015-01-22 | 2015-05-13 | 中国石油大学(华东) | Automatic underground layer change device for oil well multilayer exploitation |
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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: 20110413 Termination date: 20170729 |