CN203978413U - The meticulous pressure control device of plural parallel stage throttling - Google Patents
The meticulous pressure control device of plural parallel stage throttling Download PDFInfo
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- CN203978413U CN203978413U CN201420455755.6U CN201420455755U CN203978413U CN 203978413 U CN203978413 U CN 203978413U CN 201420455755 U CN201420455755 U CN 201420455755U CN 203978413 U CN203978413 U CN 203978413U
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- oil nozzle
- high pressure
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- throttling
- flap type
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Abstract
The utility model discloses the meticulous pressure control device of a kind of plural parallel stage throttling, it comprises high pressure line, described high pressure line middle part parallel connection is provided with many throttling branch lines, on every described throttling branch line, be connected with respectively a resistance oil nozzle sleeve, described in each, resistance oil nozzle sleeve inside is separately installed with the different oil nozzle of a diameter, and described in each, the two ends of resistance oil nozzle sleeve are respectively equipped with the first flap type and the second flap type, described high pressure line entrance is connected with well inner outlet pipeline, outlet is connected with on-the-spot expense flow container, the trunk line of this high pressure line inlet side is provided with the 3rd flap type and pressure meter, the trunk line that exports a side is provided with Siping City's plate valve and flow meter.The throttling branch road with oil nozzle of the utility model plural parallel stage, by switching throttling branch road, reaches change orifice size, thereby realizes the object of meticulous control back pressure; Oil nozzle cost is low, and fluid is frontal impact oil nozzle and pipeline inwall not, makes manifold more wear-resisting.
Description
Technical field
The utility model relates to a kind of novel throttling device in oil gas water well fracturing technique field, the meticulous pressure control device of especially a kind of plural parallel stage throttling.
Background technology
In recent years, coiled tubing hydraulic jet perforation staged fracturing is to extensive use.This process using is successively abrasive perforating, the successively method of pressure break from bottom to top.After first floor pressure break, well head has very high pressure, so in second layer perforation process, need to use ground choke manifold to control wellhead back pressure, to avoid stratum to tell in a large number sand.Conventional way is to use the device of choke valve+flap type combination at present, relies on the size of throttle valve opening in device, controls the height of back pressure.Existing device is not for the design of abrasive perforating fracturing technique, after the abrasive material of perforation (quartz sand or ceramsite sand) returns ground, fairly obvious to the erosion effect of choke valve, causes back pressure to reduce very soon.Need the frequent ball-and-seat aperture of adjusting, actual control poor effect.If use the meticulous pressure control device of drilling well, too complicated again, and cost is too high.In sum, existing throttling arrangement, the difficulty that operates is very large, is not suitable for pressure break scene.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of simple and reliable, erosion resistant and can realizes the meticulous pressure control device of plural parallel stage throttling of meticulous pressure control.
In order to solve the problems of the technologies described above, the utility model comprises high pressure line, described high pressure line middle part parallel connection is provided with many throttling branch lines, on every described throttling branch line, be connected with respectively a resistance oil nozzle sleeve, described in each, resistance oil nozzle sleeve inside is separately installed with the different oil nozzle of a diameter, and described in each, the two ends of resistance oil nozzle sleeve are respectively equipped with the first flap type and the second flap type, described high pressure line entrance is connected with well inner outlet pipeline, outlet is connected with on-the-spot expense flow container, the trunk line of this high pressure line inlet side is provided with the 3rd flap type and pressure meter, the trunk line that exports a side is provided with Siping City's plate valve and flow meter.
On the trunk line of described high pressure line inlet side, be also provided with one in normally open the 5th flap type as standby valve.
Described in each, the inner surface of oil nozzle all carries out Wear-resistant Treatment.
The beneficial effects of the utility model are: the throttling branch road with oil nozzle of the utility model plural parallel stage, by switching throttling branch road, reaches change orifice size, thereby realize the object of meticulous control back pressure; Oil nozzle cost is low, and fluid is frontal impact oil nozzle and pipeline inwall not, makes manifold more wear-resisting; In addition, on the utility model device, there are pressure meter and flow meter, can change easily oil nozzle combination, realize the object of meticulous control back pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the meticulous pressure control device of the utility model plural parallel stage throttling.
The specific embodiment
Referring to Fig. 1, the meticulous pressure control device of plural parallel stage throttling of the present utility model comprises high pressure line 3, described high pressure line 3 middle part parallel connections are provided with many throttling branch lines 13, on every described throttling branch line 13, be connected with respectively a resistance oil nozzle sleeve 5, described in each, resistance oil nozzle sleeve 5 inside are separately installed with the different oil nozzle of a diameter 6, and described in each, the two ends of resistance oil nozzle sleeve 5 are respectively equipped with the first flap type 4 and the second flap type 7, described high pressure line 3 entrances 11 are connected with well inner outlet pipeline, outlet 12 is connected with on-the-spot expense flow container, the trunk line of these high pressure line 3 entrance 11 1 sides is provided with the 3rd flap type 2 and pressure meter 9, the trunk line that exports 12 1 sides is provided with Siping City's plate valve 8 and flow meter 10.On the trunk line of described high pressure line 3 entrance 11 1 sides, be also provided with one in normally open the 5th flap type 1 as standby valve.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The utility model comprises the throttling branch line 13 of a plurality of parallel connections, and branch line quantity is generally between 4-6 bar, and preferably, as shown in Figure 1, in the utility model, branch line quantity is 6.The oil nozzle 6 comprising in each throttling branch line 13 plays throttling action, distance between oil nozzle 6 to second flap types 7 is greater than 0.5m, can greatly reduce so the positive erosion to pipeline of abrasive material in fluid, oil nozzle 6 by screwed connection in resistance oil nozzle sleeve 5 inside, resistance oil nozzle sleeve 5 is connected between the first flap type 4 and the second flap type 7, and the first flap type 4, the second flap type 7 and resistance oil nozzle sleeve 5 link together by screw thread and high pressure line 3 trunk lines.Oil nozzle 6 external surfaces and resistance oil nozzle sleeve 5 inner surfaces have screw thread, can change oil nozzle 6 by special tool.The diameter of oil nozzle 6 is at 2-10mm, and length is at 80-100mm, and its inner surface has carried out Wear-resistant Treatment, and working life is more than 100 hours.
The 5th flap type 1, the three flap type 2 He Siping City plate valve 8, the first flap types 1 are installed on high pressure line 3 trunk lines as standby valve, in normally open.Switch the 3rd flap type 2 makes manifold realize path and cutoff function, closes Siping City's plate valve 8 and can prevent the liquid backflow in outlet tank.Wherein high pressure line 3 entrances 11 adopt form of flanges to be connected with well inner outlet pipeline, and outlet 12 adopts form of flanges to be connected with on-the-spot expense flow container.
The principle of controlling back pressure is to produce choke pressure by changing area of passage.Oil nozzle 6 diameters of installing on each throttling branch road are different, by the different throttling branch road of switch, reach the object that changes orifice size.The differential minimum of orifice size can reach 0.8mm
2thereby, realize the object of meticulous pressure control.During manifold work, first, according to the size of outlet pressure and the flow that needs to control, open required throttling branch road, in operating process, can open and close branch road increases and reduces flow.From pressure meter 9, can read the size of back pressure, flow meter 10 can be read flow.
The utility model is applicable to pressure break or the acidizing treatment of oil gas water well, especially at needs, uses in the abrasive perforating fractured well of controlling back pressure with the obvious advantage.The utility model apparatus structure is simple, and cost is low, convenient for installation and maintenance, has broad application prospects.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but within these embodiment are included in scope of the present utility model.
Claims (3)
1. the meticulous pressure control device of plural parallel stage throttling, it is characterized in that: comprise high pressure line (3), described high pressure line (3) middle part parallel connection is provided with many throttling branch lines (13), on every described throttling branch line (13), be connected with respectively a resistance oil nozzle sleeve (5), resistance oil nozzle sleeve described in each (5) inside is separately installed with the different oil nozzle of a diameter (6), and the two ends of resistance oil nozzle sleeve described in each (5) are respectively equipped with the first flap type (4) and the second flap type (7), described high pressure line (3) entrance (11) is connected with well inner outlet pipeline, outlet (12) is connected with on-the-spot expense flow container, the trunk line of this high pressure line (3) entrance (11) one sides is provided with the 3rd flap type (2) and pressure meter (9), the trunk line of outlet (12) one sides is provided with Siping City's plate valve (8) and flow meter (10).
2. according to the meticulous pressure control device of plural parallel stage throttling claimed in claim 1, it is characterized in that: on the trunk line of described high pressure line (3) entrance (11) one sides, be also provided with one in normally open the 5th flap type (1) as standby valve.
3. according to the meticulous pressure control device of plural parallel stage throttling described in any one in claim 1 and 2, it is characterized in that: the inner surface of oil nozzle described in each (6) all carries out Wear-resistant Treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420455755.6U CN203978413U (en) | 2014-08-13 | 2014-08-13 | The meticulous pressure control device of plural parallel stage throttling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420455755.6U CN203978413U (en) | 2014-08-13 | 2014-08-13 | The meticulous pressure control device of plural parallel stage throttling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978413U true CN203978413U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420455755.6U Expired - Fee Related CN203978413U (en) | 2014-08-13 | 2014-08-13 | The meticulous pressure control device of plural parallel stage throttling |
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| CN (1) | CN203978413U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626004A (en) * | 2016-03-03 | 2016-06-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Blowout erosion-resistant throttle manifold for oil and gas wells |
| CN112983350A (en) * | 2021-04-14 | 2021-06-18 | 盐城佰信石油机械有限公司 | Wellhead back pressure regulation and control method and device |
| CN113445967A (en) * | 2020-03-24 | 2021-09-28 | 中国石油天然气股份有限公司 | Throttling method and device for two-stage oil nozzle |
| CN114645692A (en) * | 2022-05-23 | 2022-06-21 | 德州联合石油科技股份有限公司 | Wellhead Christmas tree throttle valve core and throttle valve |
-
2014
- 2014-08-13 CN CN201420455755.6U patent/CN203978413U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626004A (en) * | 2016-03-03 | 2016-06-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Blowout erosion-resistant throttle manifold for oil and gas wells |
| CN105626004B (en) * | 2016-03-03 | 2017-12-15 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of Oil/gas Well open flow erosion resistance choke manifold |
| CN113445967A (en) * | 2020-03-24 | 2021-09-28 | 中国石油天然气股份有限公司 | Throttling method and device for two-stage oil nozzle |
| CN112983350A (en) * | 2021-04-14 | 2021-06-18 | 盐城佰信石油机械有限公司 | Wellhead back pressure regulation and control method and device |
| CN114645692A (en) * | 2022-05-23 | 2022-06-21 | 德州联合石油科技股份有限公司 | Wellhead Christmas tree throttle valve core and throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210118 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| 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: 20141203 Termination date: 20210813 |