CN109306859B - Pipeline-free type medicine injection device for oil sleeve annulus - Google Patents
Pipeline-free type medicine injection device for oil sleeve annulus Download PDFInfo
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- CN109306859B CN109306859B CN201710632640.8A CN201710632640A CN109306859B CN 109306859 B CN109306859 B CN 109306859B CN 201710632640 A CN201710632640 A CN 201710632640A CN 109306859 B CN109306859 B CN 109306859B
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- 238000002347 injection Methods 0.000 title claims abstract description 132
- 239000007924 injection Substances 0.000 title claims abstract description 132
- 239000003814 drug Substances 0.000 title claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 229940079593 drug Drugs 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Check Valves (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to a medicine injection device of a pipeless oil sleeve annulus, which comprises at least one filter pipe for filtering annulus injection liquid, a first-stage rupture disc with first rupture pressure, a drainage pipe for guiding the injection liquid to the first-stage rupture disc and a medicine injection valve component for sealing the injection liquid and controlling a switch, wherein the filter pipe, the drainage pipe, the first-stage rupture disc and the medicine injection valve component are mutually communicated. The pipeline-free type medicine injection device for the oil sleeve annulus does not need a medicine injection pipeline, is reliable and durable, is safer and more time-efficient in construction, can filter and prevent blocking during medicine injection, and is simple in operation.
Description
Technical Field
The invention relates to the technical field of petroleum exploitation, in particular to a pipeline-free oil jacket annular medicine injection device.
Background
In petroleum exploitation, a traditional injection valve is connected to the ground through an injection pipeline, pressurized by ground equipment, and used for injecting chemical agents into a shaft through the injection pipeline and the injection valve, wherein the injection pipeline extends from the bottom of the shaft to the wellhead, and has long length and high cost; in the process of setting a well completion pipe string, a pipeline protection card needs to be arranged on each tubing coupling, so that the working hours are long, and the ageing is poor; for deep wells and highly deviated wells, abrasion and extrusion of injection pipelines are easy to occur in the process of loading; the medicine can be filtered only on the ground, the medicine can not be filtered for a second time underground, and the blockage of an injection pipeline and an injection valve can be easily caused during long-term injection.
Disclosure of Invention
The invention aims to provide a pipeline-free type medicine injection device for an oil sleeve annulus, which solves the problems that in the prior art, when a pipeline is used for injecting medicine, the pipeline is long in length and easy to wear, the cost is high, the working time is long, the time efficiency is poor, and a medicine injection valve is easy to block due to incapability of secondary filtration.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a no pipeline formula oil jacket annular space annotate medicine device, includes at least a filter tube, the one-level rupture disk that has first fracture pressure that is used for filtering annular space injection liquid, is used for with injection liquid drainage to the drainage tube of one-level rupture disk and be used for sealing injection liquid and control switch's injection valve subassembly, filter tube, drainage tube, one-level rupture disk and injection valve subassembly intercommunication each other.
In the medicine injection device, the medicine injection device further comprises an injection mandrel, the injection mandrel comprises a first connecting part, a mounting part and a second connecting part which are sequentially connected, a groove is formed in the mounting part, and the filter pipe, the primary rupture disc, the drainage tube and the medicine injection valve assembly are arranged in the groove.
In the drug injection device, a first inner through hole is formed in the first connecting part, a second inner through hole is formed in the second connecting part, the drainage tube, the primary rupture disc and the drug injection valve component are sequentially arranged in the groove along the axial direction of the injection mandrel, one end of the drainage tube, which is far away from the primary rupture disc, is connected with the first connecting part and communicated with the first inner through hole, and one end of the drug injection valve component, which is far away from the primary rupture disc, is connected with the second connecting part and communicated with the second inner through hole.
In the medicine injection device, two ends of each filter tube are respectively connected with the first connecting part and the second connecting part, one end of each filter tube connected with the second connecting part is a blind end, one end of each filter tube connected with the first connecting part is communicated with the first inner through hole, and the drainage tube is communicated with the filter tube through the second inner through hole.
In the medicine injection device, the number of the filter pipes is two, and the filter pipes are arranged on two sides of the axis where the drainage pipe, the primary rupture disc and the medicine injection valve assembly are located in parallel.
In the drug injection device, a secondary rupture disc with a second rupture pressure is further arranged on the peripheral wall of the first connecting part, the secondary rupture disc is communicated with the drainage tube through the first inner through hole, and the second rupture pressure is larger than the first rupture pressure.
In the injection device of the invention, the injection valve assembly comprises a first check valve opened by increasing annular pressure and at least one second check valve for sealing injection liquid in cooperation with the first check valve, and the first check valve is connected with the second check valve.
In the medicine injection device, the first check valve and the second check valve respectively comprise a check valve seat and a check valve body arranged on the periphery of the check valve seat, a switchable valve core is arranged between the check valve seat and the check valve body, an elastic piece used for balancing annular pressure to open and close the valve core is connected to the valve core, the elastic piece is arranged on the check valve seat, and the elastic force of the elastic piece arranged on the first check valve is larger than that of the elastic piece arranged on the second check valve.
In the medicine injection device, an overlapping connection area is formed between the check valve body of the first check valve and the check valve body of the second check valve, a stop screw is arranged between the check valve body of the first check valve and the check valve body of the second check valve and positioned at one end of the overlapping connection area, an elastic sealing piece is arranged between the check valve body of the first check valve and the check valve body of the second check valve and positioned at the other end of the overlapping connection area, and a sealing baffle ring and a sealing ring are arranged between the check valve body of the first check valve and the check valve body of the second check valve and positioned at the overlapping connection area.
In the injection device of the present invention, the number of the second uniflow valves is plural and the second uniflow valves are connected in series, an overlap joint area is provided between the uniflow valve bodies of the second uniflow valves adjacent to each other, a stop screw is provided between the uniflow valve bodies of the second uniflow valves adjacent to each other and at one end of the overlap joint area, an elastic sealing member is provided between the uniflow valve bodies of the second uniflow valves adjacent to each other and at the other end of the overlap joint area, and a sealing ring are provided between the uniflow valve bodies of the second uniflow valves adjacent to each other and at the overlap joint area.
The pipeline-free oil jacket annular medicine injection device has the following beneficial effects: the pipeline-free type medicine injection device for the oil sleeve annulus does not need a medicine injection pipeline, is reliable and durable, is safer and more time-efficient in construction, can filter and prevent blocking during medicine injection, and is simple in operation.
Drawings
FIG. 1 is a schematic diagram of a drug injection device for a pipeless oil jacket annulus of the present invention;
FIG. 2 is a schematic cross-sectional view of a drug injection valve assembly and a primary rupture disc of a drug injection device of a pipeless oil sleeve annulus of the present invention;
FIG. 3 is a cross-sectional view taken along A-A of the injection device of the pipeless oil sleeve annulus of FIG. 1.
Detailed Description
The structure and the action principle of the pipeless oil casing annulus medicine injection device of the invention are further described below with reference to the accompanying drawings and the embodiments:
In the description of the present invention, it should be understood that terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate an orientation or a positional relationship based on that shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1, the injection device for a pipeless oil jacket annulus comprises an injection mandrel 1, at least one filter tube 2 for filtering annulus injection fluid, a primary rupture disc 3 having a first rupture pressure, a drain tube 4 for draining injection fluid to the primary rupture disc 3, and an injection valve assembly 5 for sealing off injection fluid and controlling switching.
The injection mandrel 1 adopts an eccentric non-welding mandrel, can absorb shock without being damaged, and eliminates the fracture problem caused by split welding. The injection mandrel 1 comprises a first connecting part 11, a mounting part 12 and a second connecting part 13 which are sequentially connected, a first inner through hole (not labeled in the figure) is formed in the first connecting part 11, a second inner through hole (not labeled in the figure) is formed in the second connecting part 13, and a groove (not labeled in the figure) is formed in the mounting part 12. The filter tube 2, the primary rupture disc 3, the drainage tube 4 and the drug injection valve assembly 5 are arranged in the groove and are communicated with each other. The design of the eccentric mandrel and the groove ensures that the filter tube 2, the first-stage rupture disc 3, the drainage tube 4 and the drug injection valve component 5 are all positioned in the groove, thereby playing a role in protecting the process of descending in the well. The connection between the components and the injection mandrel 1 is sealed metal to metal with NPT buttons. Wherein, filter tube 2 adopts plug 8 to further fix.
Specifically, the drainage tube 4, the first-stage rupture disc 3 and the injection valve assembly 5 are sequentially arranged in the groove along the axial direction of the injection mandrel 1, one end of the drainage tube 4, which is far away from the first-stage rupture disc 3, is connected with the first connecting part 11 and is communicated with the first inner through hole, and one end of the injection valve assembly 5, which is far away from the first-stage rupture disc 3, is connected with the second connecting part 13 and is communicated with the second inner through hole. Wherein a sealing joint 6 is arranged between the drainage tube 4 and the first connecting part 11.
In this embodiment, the number of filter tubes 2 is two and are arranged side by side on both sides of the axis on which the draft tube 4, the primary rupture disc 3 and the injection valve assembly 5 lie. In other embodiments, the number of filter tubes 2 may be one and juxtaposed on one side of draft tube 4, primary rupture disc 3 and injection valve assembly 5, or the number of filter tubes 2 may be greater and encircling the outer circumference of draft tube 4, primary rupture disc 3 and injection valve assembly 5. The two ends of each filter tube 2 are respectively connected with the first connecting part 11 and the second connecting part 13, one end of each filter tube 2 connected with the second connecting part 13 is a blind end, one end of each filter tube 2 connected with the first connecting part 11 is communicated with the first inner through hole, and the drainage tube 4 is communicated with the filter tube 2 through the first inner through hole. Wherein a sealing joint 6 is provided between each filter tube 2 and the first connection 11. In this embodiment, the filter tube 22 has a filtration accuracy of 300. Mu.m, and depending on the well bore and the chemical, a filtration accuracy of 60 to 600. Mu.m is preferable.
The two filter tubes 2 maximize the filtration area, can realize the effective filtration to annular space injection liquid, prevent annular space impurity from blocking up injection valve subassembly 5, filter tube 2 has certain self-cleaning function simultaneously, by the impurity that filters the blocking, can subside in the sky of the bigger oil collar below under the dead weight effect, be difficult to block up filter tube 2.
As shown in fig. 2, the primary rupture disc 3 is installed between the injection valve assembly 5 and the draft tube 4 through the primary rupture disc housing 31, the primary rupture disc 3 is installed inside the primary rupture disc housing 31, and the primary rupture disc housing 31 is connected with the draft tube 4 through the first connection head 10.
The rupture disc is designed to rupture under pressure to protect the product and process for a particular job purpose. The primary rupture disc 3 is positioned at the front end of the injection valve assembly 5, after the completion pipe string is lowered and the packer is set, the annular space is checked and sealed, wherein the annular space pressure is lower than the first rupture pressure of the primary rupture disc 3, and after the annular space is checked and sealed, the primary rupture disc 3 can be broken by continuing to pressurize, so that the annular space injection is realized.
The injection valve assembly 5 includes a first check valve 51 that opens by increasing the annulus pressure and at least a second check valve 52 for securing the seal of the injection fluid in cooperation with the first check valve 51, the first check valve 51 being connected to the second check valve 52. The first and second check valves 51, 52 together act as a switch and oil jacket annulus spacer to prevent fluid in the tubing from invading the annulus, while the first check valve 51 is biased to act as a switch to circulate or shut-off the injection fluid, while the second check valve 52 is biased to act as a safety for the first check valve 51 to prevent back-invasion of the injection fluid into the annulus. The number of the second check valves 52 may be one or two or more.
Specifically, as shown in fig. 2, each of the first check valve 51 and the second check valve 52 includes a check valve seat 5a and a check valve body 5b mounted on the outer periphery of the check valve seat 5a, a switchable spool 5c is provided between the check valve seat 5a and the check valve body 5b, an elastic member 5d for opening and closing the spool in balance with the annular pressure is connected to the spool 5c, the elastic member 5d is mounted on the check valve seat 5a, and the elastic force of the elastic member 5d provided for the first check valve 51 is greater than the elastic force of the elastic member 5d provided for the second check valve 52. When the injection is started, the annular pressure is increased, the elastic force of the elastic piece 5d of the first check valve 51 is overcome, the valve core 5c of the first check valve 51 is opened, the injection continues to flow, and the valve core 5c of the second check valve 52 is also opened; when the injection is stopped, the elastic members 5d of the first check valve 51 and the second check valve 52 are reset, and the valve bodies 5c of the first check valve 51 and the second check valve 52 are closed. The elastic member 5d may be a spring, a leaf spring, or the like.
The check valve body 5b of the first check valve 51 is connected to the first-stage rupture disc housing 31, and has an overlapping joint area, and stopper screws 30, and sealing rings 40 and 50 are respectively provided at both end edges of the overlapping joint area.
Wherein the check valve body 5b is substantially Z-shaped, so that the check valve body 5b of the first check valve 51 and the check valve body 5b of the second check valve 52 are overlapped. There is also an overlap junction area between the check valve body 5b of the first check valve 51 and the check valve body 5b of the second check valve 52, a stop screw 30 is provided between the check valve body 5b of the first check valve 51 and the check valve body 5b of the second check valve 52 at one end of the overlap junction area, an elastic seal 60 is provided between the check valve body 5b of the first check valve 51 and the check valve body 5b of the second check valve 52 at the other end of the overlap junction area, and a sealing stop ring 40 and a sealing ring 50 are provided between the check valve body 5b of the first check valve 51 and the check valve body 5b of the second check valve 52 at the overlap junction area.
The number of the second check valves 52 is plural and connected in series with each other, and similarly, an overlap joint area is provided between the check valve bodies 5b of the second check valves 52 adjacent to each other, a stopper screw 30 is provided between the check valve bodies 5b of the second check valves 52 adjacent to each other at one end of the overlap joint area, an elastic seal 60 is provided between the check valve bodies 5b of the second check valves 52 adjacent to each other at the other end of the overlap joint area, and a seal retainer 40 and a seal ring 50 are provided between the check valve bodies 5b of the second check valves 52 adjacent to each other at the overlap joint area. In the present embodiment, the number of the second check valves 52 is two, and the second check valve 52 at the end is connected to the second connection portion 13 of the injection mandrel 1 through the second connection head 20.
The sealing ring 50 and the elastic sealing member 60 may be made of rubber or silica gel.
The diameter of the first check valve 51 is larger than that of the second check valve 52, and injection efficiency is improved. And both are made of nickel-based alloy materials, so that the corrosion resistance and the corrosion resistance are good. The first check valve 51 and the second check valve 52 can jointly realize the switching action and the interval of the oil sleeve annulus to prevent the fluid in the oil pipe from invading the annulus, and the design of the two second check valves 52 provides double insurance to further ensure the safety of the well bore.
As shown in fig. 1 and 3, a secondary rupture disc 7 having a second rupture pressure, which is greater than the first rupture pressure, is further installed on the outer circumferential wall of the first connection section 11, and the secondary rupture disc 7 communicates with the draft tube 4 through the first inner through hole. If the annular impurities are too much, the filter tube 2 is blocked, the secondary injection can be realized by continuously pressurizing and breaking the secondary rupture disc 7 in the annular space, that is, the secondary rupture disc 7 can be broken only under the condition that the filter tube 2 is blocked, and the front and back fluid of the secondary rupture disc 7 are communicated and the pressure is balanced during normal injection.
The primary rupture disc 3 prevents premature annulus injection during the run in. After the production packer is set, the packer can be tested under annular pressure, which is required to be lower than the rupture pressure of the primary rupture disc 3. After the seal verification is finished, the annulus is continuously pressurized, the first-stage rupture disk 3 is broken, and the injection of the annulus medicament can be realized under the condition that the annulus pressure is higher than the opening pressure of the first check valve 51 in the injection valve assembly 5. The initial injection channel is oil sleeve annulus, filter tube 3, sealing joint 6, drainage tube 4, first-stage rupture disc 3 (broken at this time), injection valve assembly 5 and injection mandrel 1. When the annulus pressure is lower than the opening pressure of the first check valve 51 and the second check valve 52, the first check valve 51 and the second check valve 52 are closed, so that the fluid in the oil pipe can be prevented from invading the annulus.
Further, after the injection for a long time, if the annular impurities are too much, the filter tube 2 is blocked, the secondary rupture disc 7 can be broken by pressurizing the annular space, and the filter tube 2 is bypassed, so that the secondary injection is realized. The secondary injection passage is oil sleeve annulus, a secondary rupture disc 7 (broken at the moment), a sealing joint 6, a drainage tube 4, a primary rupture disc 3 (broken), an injection valve assembly 5 and an injection mandrel 1, wherein the injection valve assembly is arranged in the second connecting part 13.
The pipeless oil sleeve annular medicine injection device has the following advantages:
(1) The injection pipeline is not needed, and the injection can be directly carried out from the annular space of the oil sleeve when the injection is needed, so that the cost of the injection pipeline and the pipeline protection card is saved;
(2) The filter tube, the drainage tube, the first-stage rupture disc, the drug injection valve component and the like are all arranged in the groove of the injection mandrel, so that good protection is obtained, abrasion and collision damage can not occur in the well descending process, a pipeline protection card is not required to be broken, and the operation is safer and more efficient;
(3) The double filter pipe design maximizes the filtering area, can realize the underground secondary filtration of the injection liquid, and can effectively prevent the injection valve assembly from being blocked;
(4) The annular seal inspection requirement in construction operation can be met by setting the rupture pressure of the primary rupture disc; by setting the rupture pressure of the secondary rupture disc, the filter pipe can be bypassed under the condition that the long-term medicine injection filter pipe is blocked, so that secondary injection is realized;
(5) The design of the first check valve and the two second check valves in the injection valve assembly can prevent fluid in the oil pipe from invading the annular space, and can also meet the requirements of oil pipe pressure test, packer setting, yield increasing operation and the like in construction operation.
It will be appreciated that modifications and variations will be apparent to those skilled in the art from the above description, and it is intended to be within the scope of the invention as defined in the appended claims.
Claims (6)
1. The injection device for the pipeless oil jacket annulus is characterized by comprising an injection mandrel (1), at least one filter pipe (2) for filtering annulus injection liquid, a primary rupture disc (3) with first rupture pressure, a drainage tube (4) for guiding the injection liquid to the primary rupture disc (3) and an injection valve assembly (5) for sealing the injection liquid and controlling a switch, wherein the injection mandrel (1) comprises a first connecting part (11), a mounting part (12) and a second connecting part (13) which are sequentially connected, a groove is formed in the mounting part (12), and the filter pipe (2), the primary rupture disc (3), the drainage tube (4) and the injection valve assembly (5) are mounted in the groove;
A first inner through hole is formed in the first connecting part (11), a second inner through hole is formed in the second connecting part (13), the drainage tube (4), the first-stage rupture disc (3) and the injection valve component (5) are sequentially arranged in the groove along the axial direction of the injection mandrel (1), one end, far away from the first-stage rupture disc (3), of the drainage tube (4) is connected with the first connecting part (11) and communicated with the first inner through hole, and one end, far away from the first-stage rupture disc (3), of the injection valve component (5) is connected with the second connecting part (13) and communicated with the second inner through hole;
The two ends of each filter tube (2) are respectively connected with the first connecting part (11) and the second connecting part (13), one end of each filter tube (2) connected with the second connecting part (13) is a blind end, one end of each filter tube (2) connected with the first connecting part (11) is communicated with the first inner through hole, and the drainage tube (4) is communicated with the filter tube (2) through the first inner through hole; the filter tube (2), the drainage tube (4), the first-stage rupture disc (3) and the drug injection valve component (5) are communicated with each other;
the outer peripheral wall of the first connecting part (11) is also provided with a secondary rupture disc (7) with a second rupture pressure, the secondary rupture disc (7) is communicated with the drainage tube (4) through the first inner through hole, and the second rupture pressure is larger than the first rupture pressure.
2. The drug injection device according to claim 1, wherein the number of the filter tubes (2) is two and the filter tubes are arranged on two sides of the axis of the drainage tube (4), the primary rupture disc (3) and the drug injection valve assembly (5) in parallel.
3. The injection device according to claim 1, wherein the injection valve assembly (5) comprises a first check valve (51) opened by increasing the annulus pressure and at least one second check valve (52) for securing the injection fluid in cooperation with the first check valve (51), the first check valve (51) being connected to the second check valve (52).
4. A device according to claim 3, characterized in that the first single-flow valve (51) and the second single-flow valve (52) each comprise a single-flow valve seat (5 a) and a single-flow valve body (5 b) mounted on the periphery of the single-flow valve seat (5 a), a switchable valve core (5 c) is arranged between the single-flow valve seat (5 a) and the single-flow valve body (5 b), an elastic member (5 d) for switching the valve core (5 c) in balance with annular pressure is connected to the valve core (5 c), the elastic member (5 d) is mounted on the single-flow valve seat (5 a), and the elastic force of the elastic member (5 d) provided for the first single-flow valve (51) is greater than that of the elastic member (5 d) provided for the second single-flow valve (52).
5. The drug injection device according to claim 4, characterized in that an overlap junction area is provided between the check valve body (5 b) of the first check valve (51) and the check valve body (5 b) of the second check valve (52), a stop screw (30) is provided between the check valve body (5 b) of the first check valve (51) and the check valve body (5 b) of the second check valve (52) at one end of the overlap junction area, an elastic sealing member (60) is provided between the check valve body (5 b) of the first check valve (51) and the check valve body (5 b) of the second check valve (52) at the other end of the overlap junction area, and a sealing stop ring (40) and a sealing ring (50) are provided between the check valve body (5 b) of the first check valve (51) and the check valve body (5 b) of the second check valve (52) at the overlap junction area.
6. The injection device according to claim 4, wherein the number of the second check valves (52) is plural and connected in series, an overlap junction area is provided between check valve bodies (5 b) of the second check valves (52) adjacent to each other, a stopper screw (30) is provided between check valve bodies (5 b) of the second check valves (52) adjacent to each other at one end of the overlap junction area, an elastic seal (60) is provided between check valve bodies (5 b) of the second check valves (52) adjacent to each other at the other end of the overlap junction area, and a seal stopper ring (40) and a seal ring (50) are provided between check valve bodies (5 b) of the second check valves (52) adjacent to each other at the overlap junction area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710632640.8A CN109306859B (en) | 2017-07-28 | 2017-07-28 | Pipeline-free type medicine injection device for oil sleeve annulus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710632640.8A CN109306859B (en) | 2017-07-28 | 2017-07-28 | Pipeline-free type medicine injection device for oil sleeve annulus |
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| CN109306859A CN109306859A (en) | 2019-02-05 |
| CN109306859B true CN109306859B (en) | 2024-04-26 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201087727Y (en) * | 2007-05-15 | 2008-07-16 | 宝鸡石油机械有限责任公司 | Pressure-selecting control mechanism of pressure-selecting control test switch valve |
| CN101929327A (en) * | 2010-09-06 | 2010-12-29 | 中国海洋石油总公司 | Electric submersible pump producing tubular column with sand filtering and discharging functions and operating method thereof |
| CN204457614U (en) * | 2015-02-04 | 2015-07-08 | 中曼石油天然气集团股份有限公司北京国际钻井工程分公司 | A kind of two disc type circulating valve that breaks |
| CN204984313U (en) * | 2015-08-26 | 2016-01-20 | 中国海洋石油总公司 | Piece filters recovery instrument in multi -functional pit shaft of deep water |
| CN105545221A (en) * | 2016-03-04 | 2016-05-04 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | Shale gas well no-killing production tubular column capable of being lifted up and put down under no pressure and construction method |
| CN106968640A (en) * | 2017-03-15 | 2017-07-21 | 西南石油大学 | A kind of drainage underground gas production instrument |
| CN207063965U (en) * | 2017-07-28 | 2018-03-02 | 深圳市百勤石油技术有限公司 | A kind of medicine-filling device of no pipeline oil jacket annular space |
-
2017
- 2017-07-28 CN CN201710632640.8A patent/CN109306859B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201087727Y (en) * | 2007-05-15 | 2008-07-16 | 宝鸡石油机械有限责任公司 | Pressure-selecting control mechanism of pressure-selecting control test switch valve |
| CN101929327A (en) * | 2010-09-06 | 2010-12-29 | 中国海洋石油总公司 | Electric submersible pump producing tubular column with sand filtering and discharging functions and operating method thereof |
| CN204457614U (en) * | 2015-02-04 | 2015-07-08 | 中曼石油天然气集团股份有限公司北京国际钻井工程分公司 | A kind of two disc type circulating valve that breaks |
| CN204984313U (en) * | 2015-08-26 | 2016-01-20 | 中国海洋石油总公司 | Piece filters recovery instrument in multi -functional pit shaft of deep water |
| CN105545221A (en) * | 2016-03-04 | 2016-05-04 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | Shale gas well no-killing production tubular column capable of being lifted up and put down under no pressure and construction method |
| CN106968640A (en) * | 2017-03-15 | 2017-07-21 | 西南石油大学 | A kind of drainage underground gas production instrument |
| CN207063965U (en) * | 2017-07-28 | 2018-03-02 | 深圳市百勤石油技术有限公司 | A kind of medicine-filling device of no pipeline oil jacket annular space |
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