CN203796232U - Chemical reagent injection device for oil field - Google Patents
Chemical reagent injection device for oil field Download PDFInfo
- Publication number
- CN203796232U CN203796232U CN201420205625.7U CN201420205625U CN203796232U CN 203796232 U CN203796232 U CN 203796232U CN 201420205625 U CN201420205625 U CN 201420205625U CN 203796232 U CN203796232 U CN 203796232U
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- CN
- China
- Prior art keywords
- injection device
- chemical agent
- oil field
- hydraulic jack
- blow vent
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a chemical reagent injection device for an oil field, belongs to the field of wellhead blowout prevention devices for the oil field, and is designed for solving the problems that an existing chemical reagent injection device is slow in chemical reagent injection and liquid discharge, liquid cannot be discharged thoroughly and the like. The chemical reagent injection device for the oil field comprises a main pipeline leading into an oil well, the main pipeline is respectively communicated with a chemical reagent injection port and a vent port, and a driving device used for opening and closing the vent port is arranged at the vent port. Air in the pipeline of the injection device is exhausted through the vent port which is opened by the driving device, and the vent port is closed by the driving device to enable chemical reagent to be injected into the oil well from the chemical reagent injection port via the main pipeline, so that quickness in injection of the chemical reagent into the oil well is realized; after operations are completed, the wellhead is closed, the driving device opens the vent port to enable compressed air to be inputted through the vent port, and residual liquid in the injection device can be quickly and thoroughly discharged under propelling of the compressed air.
Description
Technical field
The utility model relates to chemical agent injection device, relates in particular to a kind of oil field chemical agent injection device.
Background technology
Winter field temperature is colder, and it is stifled that the operation in wellhead assembly of China's Oil Field cable often runs into ice.For the ice that effectively prevention of water compound forms blocks up, make cable normal operation, can effectively prevent in use jam of cable, prevent that gas blowout accident from occurring, realize safe construction, oil field, extensively using chemical agent as hydrate inhibitor, is injected in oil well by injection device, thereby removal hydrate, avoids compound to form the generation of the stifled phenomenon of ice.
And the existing chemical agent injection device that is applied to field, oil field only has the inlet of chemical agent, in use, the speed that chemical agent injects is slow, injects the amount of chemical agent and can not determine; After wellhead assembly fulfils assignment, the liquid velocity in discharge pipe is slow, and discharge is unclean, affects construction speed.
Utility model content
An object of the present utility model is to propose a kind ofly in oil well, to inject fast chemical agent, discharge the residual liquid in injection device, the oil field that efficiency of construction is high chemical agent injection device fast and neatly.
Another object of the present utility model is that proposition is a kind of simple in structure, easy accessibility, safe and reliable oil field chemical agent injection device.
For reaching this object, the utility model by the following technical solutions:
The utility model provides a kind of oil field chemical agent injection device, comprise the main pipeline leading in oil well, described main pipeline is communicated with chemical agent inlet, and described main pipeline is also communicated with blow vent, and described blow vent place arranges the drive unit of this blow vent of opening and closing.
Preferably, described drive unit is hydraulic jack, described main pipeline is communicated with the inner chamber of axle sleeve by branch pipe(tube), on the inwall of described inner chamber, there is described blow vent, the piston rod that stretches out described hydraulic jack outside coordinates with described bore seal, can in described inner chamber, move and open or close described blow vent;
On the cylinder wall of described hydraulic jack, there is the fluid-through port for hydraulic oil turnover.
Preferably, described main pipeline is arranged on the inside of apparatus main body, and one end of described branch pipe(tube) is arranged in described apparatus main body and is communicated with described main pipeline, and its other end is arranged in contiguous block and is communicated with the inner chamber of described axle sleeve;
Described apparatus main body is connected with described contiguous block, and in junction, the outer setting pipe protection axle sleeve of described branch pipe(tube), the inner peripheral surface of the outer peripheral face of described pipe protection axle sleeve and described apparatus main body and described contiguous block is sealed and matched.
Preferably, one end end face of described hydraulic jack and the inner peripheral surface of described contiguous block are sealed and matched.
Preferably, the outer peripheral face of described axle sleeve and the inner peripheral surface of described contiguous block are sealed and matched.
Preferably, the inside of described hydraulic jack arranges spring, and described spring is fixed on described hydraulic jack by cylinder cap.
Preferably, external double male joint, elbow and the snap joint successively respectively of described chemical agent inlet place, described blow vent place and described fluid-through port place, is threaded between described double male joint, described elbow and described snap joint.
Preferably, between the external elbow in described chemical agent inlet place and snap joint, one way valve is set.
Preferably, on described hydraulic jack, housing screw is set, described housing screw is for dismantling described hydraulic jack without assisting under pressure condition.
Preferably, described blow vent and described fluid-through port are 1/4NPT outlet.
The beneficial effects of the utility model are:
(1) the utility model provides a kind of oil field chemical agent injection device, comprises the main pipeline leading in oil well, and main pipeline is communicated with chemical agent inlet and blow vent respectively, and blow vent place arranges the drive unit of this blow vent of opening and closing.First open blow vent by drive unit, air in injection device pipeline is discharged from blow vent, then close blow vent by drive unit, chemical agent is injected in oil well through main pipeline by chemical agent inlet, so realized the object of injecting fast chemical agent in oil well; After operation completes, close well head, open blow vent by drive unit, from blow vent input compressed-air, the residual liquid that compressed air can promote in injection device is discharged rapidly and neatly.
(2) drive unit is hydraulic jack, on the cylinder wall of hydraulic jack, there is the fluid-through port for hydraulic oil turnover, main pipeline is communicated with the inner chamber of axle sleeve by branch pipe(tube), on the inwall of inner chamber, there is blow vent, the piston rod that stretches out hydraulic jack outside coordinates with bore seal, can in inner chamber, move and open or close blow vent.Be that fluid-through port pumps into hydraulic oil by outside manual pump, promote piston rod positive movement and realized the unlatching of blow vent under the effect of hydraulic pressure, the air in injection device pipeline can be discharged by blow vent; After Bas Discharged is clean, discharge hydraulic pressure by manual pump, piston rod counter motion has been realized closing of blow vent.
(3) the outer setting pipe protection axle sleeve of branch pipe(tube); the inner peripheral surface of the outer peripheral face of pipe protection axle sleeve and apparatus main body and contiguous block is sealed and matched; one end end face of hydraulic jack and the inner peripheral surface of contiguous block are sealed and matched; the outer peripheral face of axle sleeve and the inner peripheral surface of contiguous block are sealed and matched; above hermetically-sealed construction all makes injection device have good tightness, safe and reliable.
(4) chemical agent inlet place, blow vent place and fluid-through port place are threaded between external double male joint, elbow and snap joint respectively successively; In addition, housing screw is set on hydraulic jack, without assisting dismounting hydraulic jack under pressure condition, not only simple in structure, and easy accessibility.
Brief description of the drawings
Fig. 1 is the sectional drawing of the oil field that provides of the utility model preferred embodiment one chemical agent injection device;
Fig. 2 is the stereogram of the oil field that provides of the utility model preferred embodiment one chemical agent injection device.
In figure, 1, main pipeline; 2, hydraulic jack; 21, piston rod; 22, spring; 23, cylinder cap; 24, housing screw; 3, branch pipe(tube); 4, axle sleeve; 41, inner chamber; 5, apparatus main body; 6, contiguous block; 7, pipe protection axle sleeve; 8, double male joint; 9, elbow; 10, snap joint; 11, one way valve; 12, holding screw; 13, seal.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by detailed description of the invention.
Preferred embodiment one:
Fig. 1 and Fig. 2 are respectively sectional drawing and the stereograms of the oil field that provides of the present embodiment chemical agent injection device.A kind of oil field chemical agent injection device that the present embodiment provides, as depicted in figs. 1 and 2, this oil field comprises the main pipeline 1 leading in oil well with chemical agent injection device, main pipeline 1 is arranged on the inside of apparatus main body 5, apparatus main body 5 is connected with contiguous block 6 by holding screw 12, main pipeline 1 is communicated with chemical agent inlet, chemical agent inlet place is circumscribed with successively double male joint 8, elbow 9, one way valve 11, snap joint 10 and chemical agent and injects pipeline, and is threaded each other.
Main pipeline 1 is communicated with the inner chamber 41 of axle sleeve 4 by branch pipe(tube) 3, be that one end of branch pipe(tube) 3 is arranged in apparatus main body 5 and is communicated with main pipeline 1, its other end is arranged in contiguous block 6 and is communicated with inner chamber 41, on the inwall of inner chamber 41, there is blow vent, blow vent is 1/4NPT outlet, and blow vent place is the external double male joint being threaded connection each other 8, elbow 9, the gentle pressure pipeline of snap joint 10 successively.
Inner chamber 41 is cone structure, inner chamber 41 and piston rod 21 cone match of stretching out hydraulic jack 2 outsides, on the cylinder wall of hydraulic jack 2, there is the fluid-through port for hydraulic oil turnover, fluid-through port is 1/4NPT outlet, and fluid-through port place is the external double male joint being threaded connection each other 8, elbow 9, snap joint 10 and hydraulic line successively.Meanwhile, the inside of hydraulic jack 2 arranges spring 22, and spring 22 is fixed on hydraulic jack 2 by cylinder cap 23.
By pumped into or pumped hydraulic oil by fluid-through port, under the elastic force effect of hydraulic jack 2 contained springs 22, piston rod 21 is done straight reciprocating motion inner chamber 41 is interior, thereby realizes the unlatching of blow vent or close.
Junction at apparatus main body 5 with contiguous block 6, the outer setting pipe protection axle sleeve 7 of branch pipe(tube) 3, is sealed and matched by seal 13 between the outer peripheral face of pipe protection axle sleeve 7 and apparatus main body 5 and the inner peripheral surface of contiguous block 6; Simultaneously, the bottom end face of hydraulic jack 2 and the inner peripheral surface of contiguous block 6 are sealed and matched by seal 13, the inner peripheral surface of the outer peripheral face of axle sleeve 4 and contiguous block 6 is sealed and matched by seal 13, seal 13 is preferably sealing ring, above hermetically-sealed construction all makes injection device have good tightness, safe and reliable.
Housing screw 24 is set on hydraulic jack 2, in situation with no pressure, can first back out with inner hexagon spanner the housing screw 24 that compresses hydraulic jack 2, back out hydraulic jack 2, re-use the cylinder cap 23 that double offset ring spanner or monkey wrench unload top, get final product Fast Installation and dismounting spring 22 and piston, change seal; In addition, use inner hexagon spanner to unload the holding screw 12 of lower connecting block 6, replaceable pipe protection axle sleeve 7 and corresponding seal, conveniently keep in repair and the component of changing device more.
Before injection chemical agent, use manual pump to pump into hydraulic oil for fluid-through port, under the effect of hydraulic oil, promote piston rod 21 holddown spring 22 that moves up, piston rod 21 is separated with the conical surface seal of axle sleeve 4, open blow vent, gas just can be discharged by blow vent, facilitates the operation of follow-up filling chemical agent to carry out more rapidly.Once there be liquid to flow out, illustrate that the Bas Discharged in injection device is clean, the pressure of manual pump is laid down, discharge hydraulic pressure, under the elastic force effect of spring 22, promote piston rod 21 downwards, make piston rod 21 and inner chamber 41 close fit, thereby close blow vent.
Use afterwards chemical agent injection pump that chemical agent is injected in oil well by chemical agent inlet, carry out subsequent job.After operation completes, close well head, release after the pressure in injection device, discharge rapidly for impelling the residual liquid in injection device, can use manual pump to pump into hydraulic oil for fluid-through port, after unlatching blow vent, from blow vent input compressed-air, the residual liquid that compressed air can promote in injection device is discharged rapidly and neatly.
The utility model is by hydraulic hand pump control, and the function that reaches sealing and ventilate, is connected snap joint with hydraulic line; realize remote control by hydraulic pressure, not only simple in structure, easy to operate; safe and reliable, and make construction operation surrounding environment avoid polluting, be conducive to environmental protection.
Drive unit of the present utility model is not limited to above-mentioned hydraulic jack structure, can be a simple valve, carrys out opening and closing blow vent by the switch of by-pass valve control, can also be other structures, as long as can realize the opening and closing of blow vent.
Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection domain.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present utility model, within these modes all will fall into protection domain of the present utility model.
Claims (10)
1. an oil field chemical agent injection device, comprise the main pipeline (1) leading in oil well, described main pipeline (1) is communicated with chemical agent inlet, it is characterized in that, described main pipeline (1) is also communicated with blow vent, and described blow vent place arranges the drive unit of this blow vent of opening and closing.
2. oil field according to claim 1 chemical agent injection device, it is characterized in that: described drive unit is hydraulic jack (2), described main pipeline (1) is communicated with the inner chamber (41) of axle sleeve (4) by branch pipe(tube) (3), on the inwall of described inner chamber (41), there is described blow vent, stretch out the outside piston rod (21) of described hydraulic jack (2) and be sealed and matched with described inner chamber (41), can in described inner chamber (41), move and open or close described blow vent;
On the cylinder wall of described hydraulic jack (2), there is the fluid-through port for hydraulic oil turnover.
3. oil field according to claim 2 chemical agent injection device, it is characterized in that: described main pipeline (1) is arranged on the inside of apparatus main body (5), one end of described branch pipe(tube) (3) is arranged in described apparatus main body (5) and is communicated with described main pipeline (1), and its other end is arranged in contiguous block (6) and is communicated with the inner chamber (41) of described axle sleeve (4);
Described apparatus main body (5) is connected with described contiguous block (6); and in junction; the outer setting pipe protection axle sleeve (7) of described branch pipe(tube) (3), the inner peripheral surface of the outer peripheral face of described pipe protection axle sleeve (7) and described apparatus main body (5) and described contiguous block (6) is sealed and matched.
4. oil field according to claim 3 chemical agent injection device, is characterized in that: the inner peripheral surface of one end end face of described hydraulic jack (2) and described contiguous block (6) is sealed and matched.
5. according to the chemical agent injection device of the oil field described in claim 3 or 4, it is characterized in that: the inner peripheral surface of the outer peripheral face of described axle sleeve (4) and described contiguous block (6) is sealed and matched.
6. oil field according to claim 2 chemical agent injection device, it is characterized in that: the inside of described hydraulic jack (2) arranges spring (22), described spring (22) is fixed on described hydraulic jack (2) by cylinder cap (23).
7. oil field according to claim 2 chemical agent injection device, it is characterized in that: external double male joint (8), elbow (9) and the snap joint (10) successively respectively of described chemical agent inlet place, described blow vent place and described fluid-through port place, is threaded between described double male joint (8), described elbow (9) and described snap joint (10).
8. oil field according to claim 7 chemical agent injection device, is characterized in that: between the elbow (9) that described chemical agent inlet place is external and snap joint (10), one way valve (11) is set.
9. oil field according to claim 2 chemical agent injection device, it is characterized in that: housing screw (24) is set on described hydraulic jack (2), and described housing screw (24) is for dismantling described hydraulic jack (2) without assisting under pressure condition.
10. oil field according to claim 2 chemical agent injection device, is characterized in that: described blow vent and described fluid-through port are 1/4NPT outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205625.7U CN203796232U (en) | 2014-04-25 | 2014-04-25 | Chemical reagent injection device for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205625.7U CN203796232U (en) | 2014-04-25 | 2014-04-25 | Chemical reagent injection device for oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796232U true CN203796232U (en) | 2014-08-27 |
Family
ID=51378453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420205625.7U Withdrawn - After Issue CN203796232U (en) | 2014-04-25 | 2014-04-25 | Chemical reagent injection device for oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924946A (en) * | 2014-04-25 | 2014-07-16 | 承德市开发区富泉石油机械有限公司 | Chemical reagent injection device for oil field |
-
2014
- 2014-04-25 CN CN201420205625.7U patent/CN203796232U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924946A (en) * | 2014-04-25 | 2014-07-16 | 承德市开发区富泉石油机械有限公司 | Chemical reagent injection device for oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140827 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |