CN204827341U - Crowded plugging device of annotating - Google Patents
Crowded plugging device of annotating Download PDFInfo
- Publication number
- CN204827341U CN204827341U CN201520433241.5U CN201520433241U CN204827341U CN 204827341 U CN204827341 U CN 204827341U CN 201520433241 U CN201520433241 U CN 201520433241U CN 204827341 U CN204827341 U CN 204827341U
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- packer
- sleeve pipe
- oil
- oil pipe
- shell
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Abstract
The utility model aims to provide a crowded plugging device of annotating, including sleeve pipe and oil pipe, the sleeve pipe is located oil pipe, its characterized in that: the sleeve pipe overcoat has first packer, second packer and third packer, first packer, second packer third packer all are connected with oil pipe inner wall in close contact with, and first packer is located second packer upper portion, and the second packer is located third packer upper portion, first packer top is fixed with the water conservancy anchor, the tight oil pipe inner wall of water conservancy anchor clamp. Beneficial effect lies in: having realized alleviating contradiction between the layer through this patent, having realized the long -term stable yields in oil field, improved the ultimate recovery, through strengthening low pressure oil reservoir, water layer transformation, control voltol oil water layer, implemented separate stratum fracfturing technology, the layering is administered, keeps formation pressure, improves the section and employs the situation.
Description
Technical field
The utility model relates to technical field of petroleum extraction, particularly relates to mechanical packing fracturing technique field.
Background technology
Packer means to have elastic sealing elements, and packing various sizes whereby
tubing stringwith
wellbetween and annular space between tubing string, and isolated payzone, to control to produce (note) liquid, the downhole tool of protective casing.
In petroleum production engineering, packer is used for layering, and packer is designed with oil recovery passage, when setting, piston bush is up, and oil recovery passage is opened; After setting, upper stressor layer acts on dummy piston, upwards pushes away packing element, makes deblocking pin from shearing force; During deblocking, the frictional force by packing element and sleeve pipe cuts off deblocking pin, and piston bush is descending, closes oil recovery passage.
Pressure break refers in oil recovery or gas recovery, utilizes hydraulic action, makes oil-gas Layer form a kind of method in crack, also known as fracturing.Oil-gas Layer fracturing technology process fracturing unit truck, liquid high-pressure large-displacement with certain viscosity clamp-ons oil reservoir, after oil reservoir is extruded many cracks, adds
proppantcrack is entered in (as quartz sand etc.) filling, improves the penetrating power of oil-gas Layer, to increase water injection rate (water injection well) or oil production (oil well).Commonly use
fracturing fluidthere are aqueous fracturing fluid, oil base fracturing fluid, emulsus fracturing fluid, foam fracturing fluid and acid-base fracturing fluid 5 kinds of fundamental types.
Pressure break selects the principle of well: the well that (1) oil-gas Layer is contaminated or blocking is larger; (2) note is not entered the well that water or water filling do not take effect.
Separate stratum fracfturing is exactly will after the well section of pressure break segments again, and point multiple little interval, successively pressure break, reaches better correctional effect.
Because each oil field part low-permeability oil well number of plies is many, span large, physical property difference is large, along with the decline of strata pressure, the contradiction that interlayer difference is large more and more restricts between oil reservoir longitudinal layer and employs balance, and cause producing well high permeability formation development degree large, development degree is little even not to be employed.In order to alleviate interlayer contradiction, realizing oil field long term stable production, improving ultimate recovery, must by strengthening low pressure reservoir, aquifer transformation, control hydraulic oil water layer, implement separate stratum fracfturing technique, separated layer handling, retentively stressor layer, improve section producing status.
The patent No. CN201420596402.8 of my company's application last year, discloses a kind of separate stratum fracfturing formula and can wash packer, takes two plugging device, hierachical structure.But also there are the following problems in actual use for this structure: 1. each layering in equipment, lacks pressure meter, cannot obtain corresponding data in real time; 2. the structure of pair plugging device is facing exhausted oil field, when needing larger pressure, often performs poor, needs more level to share pressure.
Utility model content
Problem to be solved in the utility model is: provide a kind of squeezing plugging device.
The technical solution of the utility model is as follows: a kind of squeezing plugging device, comprise sleeve pipe and oil pipe, sleeve pipe is positioned at oil pipe, it is characterized in that: sleeve pipe overcoat has the first packer, the second packer and the 3rd packer, described first packer, the second packer the 3rd packer are all connected with tube inner wall close contact, first packer is positioned at the second packer top, and the second packer is positioned at the 3rd packer top; Described first packer top is fixed with hydraulic anchor, described hydraulic anchor clamping tube inner wall; The part of described sleeve pipe between the first packer and the second packer is provided with first layer fracturing switch, the part of described sleeve pipe between the second packer and the 3rd packer is provided with the second separate stratum fracfturing switch; Described casing shoe is provided with ball seat; Sleeve pipe between ball seat and the 3rd packer is provided with first throttle device, is provided with second choke between described second zonal pressure switch and the 3rd packer; Described tube inner wall is provided with pressure meter.
Further; the space that sleeve pipe and oil pipe surround is divided into four parts by the first packer, the second packer, the 3rd packer; topping on first packer; the 3rd shell of compression between first packer and the second packer; the second shell of compression between second packer and the 3rd packer, the first shell of compression under the 3rd packer.
Further, described topping is provided with the first pressure meter, and described 3rd shell of compression is provided with the second pressure meter, and the second shell of compression is provided with the 3rd pressure meter, and the first shell of compression is provided with the 4th pressure meter.
Further, described first packer is without slips, fluid pressure type well packer capable of flushing well; Described second packer and the 3rd packer are one-way slip, fluid pressure type well packer capable of flushing well.
Further, described first throttle device and second choke are restrictor valve.
The beneficial effects of the utility model are: achieve alleviation interlayer contradiction by this patent, realize oil field long term stable production, improve ultimate recovery, by strengthening low pressure reservoir, aquifer transformation, control hydraulic oil water layer, implement separate stratum fracfturing technique, separated layer handling, retentively stressor layer, improve section producing status, achieve the generation monitoring of each layering oil pressure being avoided to accident.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1, sleeve pipe, 2, oil pipe,
3, hydraulic anchor, the 4, first packer,
5, first layer fracturing switch, 6, first throttle device,
7, ball seat, the 8, second packer,
9, the 3rd packer, the 10, second separate stratum fracfturing switch,
11, the first pressure meter, 12, second choke,
13, the second pressure meter, the 14, the 3rd pressure meter,
15, the 4th pressure meter.
Detailed description of the invention
Below in conjunction with accompanying drawing, brief description is made to detailed description of the invention of the present utility model.
As shown in Figure 1, this patent is made up of hydraulic anchor 3, three joint washing well blowout preventer, two separate stratum fracfturing switches 5, two restriction chokes 6, ball seats 7 etc.First packer 4 of top protective casing 2 adopts without slips, washing well hydraulic packer (SLY341-115STF type well packer capable of flushing well); in, bottom second packer 8 and the 3rd packer 9 adopt one-way slip, washing well hydraulic packer (SLY241-115 type well packer capable of flushing well); they all adopt hydraulic base sealed, above carry deblocking mode deblocking.There is setting sealing reliable, the features such as bearing capacity is high, deblocking is convenient and reliable.After setting, seal remains sealing state under the effect of retaining mechanism; During well-flushing, hydraulic pressure is added by sleeve pipe 2, when sleeve pipe 2 pressure is higher than in oil pipe 1 during pressure, first first layer fracturing switch 5 is opened, and under flushing fluid in the middle part of this patent, continues pressurization afterwards, second zonal pressure switch 10 is opened, to this patent bottom under flushing fluid, finally enter oil pipe 1, and return out in oil pipe 1.
A kind of squeezing plugging device, comprise sleeve pipe 2 and oil pipe 1, sleeve pipe 2 is positioned at oil pipe 1, it is characterized in that: sleeve pipe 2 overcoat has the first packer 4, second packer 8 and the 3rd packer 9, described first packer 4, second packer 8 the 3rd packer 9 is all connected with oil pipe 1 inwall close contact, first packer 4 is positioned at the second packer 8 top, and the second packer 8 is positioned at the 3rd packer 9 top; Described first packer 4 top is fixed with hydraulic anchor 3, and described hydraulic anchor 3 clamps oil pipe 1 inwall; The part of described sleeve pipe 2 between the first packer 3 and the second packer 8 is provided with first layer fracturing switch 5, the part of described sleeve pipe 2 between the second packer 3 and the 3rd packer 8 is provided with the second separate stratum fracfturing switch 5; Described sleeve pipe 2 bottom is provided with ball seat 7; Sleeve pipe 2 between ball seat 7 and the 3rd packer 8 is provided with first throttle device 6, is provided with second choke 12 between described second zonal pressure switch 5 and the 3rd packer 9; Described oil pipe 1 inwall is provided with pressure meter.
The space that sleeve pipe 2 and oil pipe 1 surround is divided into four parts by the first packer 4, second packer 8, the 3rd packer 9; topping on first packer 3; which is provided with the first pressure meter 11; the 3rd shell of compression between first packer 3 and the second packer 8; which is provided with the second shell of compression between the second pressure meter 13, second packer 8 and the 3rd packer 9, which is provided with the 3rd pressure meter 14; the first shell of compression under 3rd packer 8, which is provided with the first pressure meter 15.Described topping is provided with the first pressure meter 11, and described 3rd shell of compression is provided with the second pressure meter 13, second shell of compression and is provided with the 3rd pressure meter 14, first shell of compression and is provided with the 4th pressure meter 15.
Described first packer 4 is without slips, fluid pressure type well packer capable of flushing well; Described second packer 8 and the 3rd packer 9 are one-way slip, fluid pressure type well packer capable of flushing well.Described first throttle device 6 and second choke 12 are restrictor valve.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (5)
1. a squeezing plugging device, comprise sleeve pipe (2) and oil pipe (1), sleeve pipe (2) is positioned at oil pipe (1), it is characterized in that: sleeve pipe (2) overcoat has the first packer (4), the second packer (8) and the 3rd packer (9), described first packer (4), the second packer (8) the 3rd packer (9) are all connected with oil pipe (1) inwall close contact, first packer (4) is positioned at the second packer (8) top, and the second packer (8) is positioned at the 3rd packer (9) top; Described first packer (4) top is fixed with hydraulic anchor (3), described hydraulic anchor (3) clamping oil pipe (1) inwall; Described sleeve pipe (2) part be positioned between the first packer (3) and the second packer (8) is provided with first layer fracturing switch (5), and described sleeve pipe (2) part be positioned between the second packer (3) and the 3rd packer (8) is provided with the second separate stratum fracfturing switch (5); Described sleeve pipe (2) bottom is provided with ball seat (7); Sleeve pipe (2) between ball seat (7) and the 3rd packer (8) is provided with first throttle device (6), is provided with second choke (12) between described second zonal pressure switch (5) and the 3rd packer (9); Described oil pipe (1) inwall is provided with pressure meter.
2. squeeze plugging device according to claim 1; it is characterized in that: the space that sleeve pipe (2) and oil pipe (1) surround is divided into four parts by the first packer (4), the second packer (8), the 3rd packer (9); topping on first packer (3); the 3rd shell of compression between first packer (3) and the second packer (8); the second shell of compression between second packer (8) and the 3rd packer (9), the first shell of compression under the 3rd packer (8).
3. squeeze plugging device according to claim 2; it is characterized in that: described topping is provided with the first pressure meter (11); described 3rd shell of compression is provided with the second pressure meter (13), and the second shell of compression is provided with the 3rd pressure meter (14), and the first shell of compression is provided with the 4th pressure meter (15).
4. squeeze plugging device according to claim 1, it is characterized in that: described first packer (4) is without slips, fluid pressure type well packer capable of flushing well; Described second packer (8) and the 3rd packer (9) are one-way slip, fluid pressure type well packer capable of flushing well.
5. squeeze plugging device according to claim 1, it is characterized in that: described first throttle device (6) and second choke (12) are restrictor valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520433241.5U CN204827341U (en) | 2015-06-24 | 2015-06-24 | Crowded plugging device of annotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520433241.5U CN204827341U (en) | 2015-06-24 | 2015-06-24 | Crowded plugging device of annotating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827341U true CN204827341U (en) | 2015-12-02 |
Family
ID=54684952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520433241.5U Active CN204827341U (en) | 2015-06-24 | 2015-06-24 | Crowded plugging device of annotating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204827341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677736A (en) * | 2017-01-19 | 2017-05-17 | 天津昱利赢石油科技有限公司 | Movable shaft dynamic water exploration and plugging device |
-
2015
- 2015-06-24 CN CN201520433241.5U patent/CN204827341U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677736A (en) * | 2017-01-19 | 2017-05-17 | 天津昱利赢石油科技有限公司 | Movable shaft dynamic water exploration and plugging device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |