CN220748222U - Tubular column constant pressure opening valve for oil well - Google Patents
Tubular column constant pressure opening valve for oil well Download PDFInfo
- Publication number
- CN220748222U CN220748222U CN202321811785.1U CN202321811785U CN220748222U CN 220748222 U CN220748222 U CN 220748222U CN 202321811785 U CN202321811785 U CN 202321811785U CN 220748222 U CN220748222 U CN 220748222U
- Authority
- CN
- China
- Prior art keywords
- connector
- constant pressure
- control pin
- oil well
- gas injection
- Prior art date
- 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.)
- Active
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 239000011148 porous material Substances 0.000 claims abstract description 11
- 238000012856 packing Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a tubular column constant pressure opening valve for an oil well, which comprises a main body and a connector, wherein the connector is arranged at the upper end of the main body, a protection cylinder is arranged at the lower end of the main body, a gas injection pore canal is formed in the middle of the main body, a plug is arranged in an inner cavity of the connector, and the plug is arranged at the lower part of the connector through a control pin; the packer can not only avoid the condition that thick oil liquid enters the pipe column cavity in the pipe column well descending process to cause ineffective setting of the packer, but also solve the problem that high-pressure gas injection damages the casing wall.
Description
Technical Field
The utility model relates to the technical field of oilfield exploitation, in particular to a tubular column constant pressure opening valve for an oil well.
Background
In the oil field viscous crude exploitation gas injection well, the gas injection tubular column (oil pipe + hydraulic gas injection packer + constant pressure open valve) needs supporting constant pressure open valve, its effect is: 1. controlling the setting pressure required by hydraulic setting of the thermal recovery packer; 2. providing a gas injection duct at the terminal of the gas injection pipe column.
The original constant pressure opening valve (as shown in fig. 2) has two disadvantages: 1. in the process of descending the gas injection pipe column, thick oil or oil blocks in the oil well can jack up steel balls in the constant pressure opening valve and enter the pipe column inner cavity and the packer setting pore canal, and the situation that the packer setting channel is blocked often occurs, so that the packer cannot be effectively set when being set by hydraulic pressure; 2. when gas injection is carried out, high-pressure hot gas flow directly impacts the casing wall or the perforation section, and casing damage can be caused after long-term use.
Disclosure of Invention
The utility model aims to overcome the defects described in the background art, and provides the novel constant-pressure opening valve which is simple in structure and meets the gas injection requirement, so that the problem that a packer is set ineffectively due to the fact that thick oil liquid enters a pipe column cavity in the pipe column descending process can be avoided, and the problem that the casing wall is damaged by high-pressure gas injection can be solved.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a tubular column constant pressure opening valve for oil well, includes main part and joint, the joint is installed in main part upper end, and the protection section of thick bamboo is installed to the main part lower extreme, and the gas injection pore has been seted up at the main part middle part, and the joint inner chamber is provided with the end cap, and the end cap passes through the control pin setting in the joint lower part.
Further, a control pin threaded hole is formed in the lower end of the connector, a control pin groove is formed in the outer edge of the plug, the control pin consists of a thread section and a shearing section, the shearing section of the control pin is inserted into the control pin groove of the plug, and the thread section is connected into the control pin threaded hole in the lower end of the connector and used for locking the plug inside the connector.
Furthermore, a control step is arranged on the inner cavity wall of the connector, the plug is a solid piston, the shape of the plug is matched with that of the inner cavity of the connector, and the control step can prevent the plug from moving upwards relative to the connector.
Further, the connector and the protection cylinder are respectively connected to the upper end and the lower end of the main body through threads.
Further, the protection cylinder is cylindrical, and a cylinder cover of the protection cylinder is arranged outside the gas injection pore canal on the main body.
Further, the packing groove is formed in the upper portion of the plug, the sealing packing is arranged in the packing groove, and has a sealing function, so that thick oil liquid can be prevented from entering the inner cavity of the pipe column.
The pipe column constant pressure opening valve for the oil well has the beneficial effects that:
the fixed-pressure opening valve for the oil well pipe column has simple structural design, can meet the requirement of gas injection, is provided with the plug at the joint, and utilizes the action of the control pin and the control step to position and lock the plug, so that the condition that thick oil liquid enters the pipe column cavity in the process of descending the pipe column into the well to cause ineffective setting of a packer can be avoided, the barrel cover of the protection barrel is arranged outside a gas injection hole, the high-pressure gas injection is prevented from directly impacting the sleeve, and the damage of the high-pressure gas injection to the sleeve wall can be solved.
Drawings
FIG. 1 is a schematic diagram of a constant pressure open valve for an oil well string according to the present utility model;
fig. 2 is a schematic diagram of the prior art.
In the figure: the device comprises a 1-connector, a 2-plug, a 3-main body, a 4-protection cylinder, a 5-gas injection hole, a 6-control pin, a 7-control step, an 8-sealing packing, a 9-main body A, a 10-connector A, an 11-sealing sliding sleeve, a 12-control pin A and a 13-steel ball.
Description of the embodiments
The pipe column constant pressure opening valve for oil well of the present utility model will be described in more detail by means of specific embodiments with reference to the accompanying drawings.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1, the constant pressure opening valve for the oil well pipe column of the embodiment has a simple structure, meets the gas injection requirement, can prevent thick oil liquid from entering a pipe column cavity in the pipe column descending process, causes invalid setting of a packer, and can solve the problem of damage of high-pressure gas injection to the casing wall.
In this embodiment, see fig. 1 in detail, a tubular column constant pressure opening valve for oil well, including main part 3 and joint 1, joint 1 and protection section of thick bamboo 4 are respectively through threaded connection at the upper end and the lower extreme of main part 3, and gas injection pore 5 has been seted up at main part 3 middle part, protection section of thick bamboo 4 is the tube-shape, and the barrel casing setting of protection section of thick bamboo 4 is in the outside of gas injection pore 5 on main part 3, and joint 1 inner chamber is provided with end cap 2, be provided with control step 7 on the inner chamber wall of joint 1, end cap 2 is solid piston, and shape and joint 1 inner chamber phase-match, control step 7 can avoid end cap 2 to reciprocate relatively to joint 1, end cap 2 upper portion is provided with the packing groove, is provided with seal packing 8 in the packing groove, and seal packing 8 has sealing function, can prevent thick oil liquid entering tubular column inner chamber.
The plug 2 is arranged at the lower part of the joint 1 through the control pin 6, a control pin threaded hole is formed in the lower end of the joint 1, a control pin groove is formed in the outer edge of the plug 2, the control pin 6 consists of a thread section and a shearing section, the shearing section of the control pin is inserted into the control pin groove of the plug 2, and the thread section is connected into a control pin threaded hole at the lower end of the joint 1 and used for locking the plug 2 at the inner side of the joint 1.
When in use, the gas injection pipe column is connected with: oil pipe + hydraulic gas injection packer + constant pressure open valve.
In the process of pipe column down-hole, the impact force that viscous crude liquid produced in the oil well transmits the end cap lower part through the gas injection pore canal, promotes the end cap upwards, and the impact force has been offset to the control step that end cap, joint set up, ensures that the end cap can not reciprocate relatively the joint, and the sealed packing of installation has sealed function on the end cap, can prevent viscous crude liquid entering pipe column inner chamber.
When the pipe column is put down into the well to the design position, the ground is connected with a pressing pipeline, hydraulic pressure acts on the packer and the plug head through the pipe column, the packer is gradually set along with the pressure rising, after the packer is fully set, the pressure reaches the set pressure of the constant pressure opening valve, the control pin is sheared off, the plug is moved down to the bottom of the main body, the gas injection pore canal is opened, the preparation work before gas injection is completed, high-pressure steam flows out through the pipe column and the gas injection pore canal when gas injection, the flowing direction is changed when the protection barrel is met, and the direct impact on the casing wall is avoided.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, whether direct or indirect.
While the exemplary embodiments of the present utility model have been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that many changes and modifications can be made to the specific embodiments described above without departing from the spirit of the utility model, and that many combinations of technical features and structures can be made without departing from the scope of the utility model.
Claims (5)
1. The utility model provides a tubular column constant pressure opening valve for oil well, includes main part and joint, its characterized in that: the connector is installed in main part upper end, and the protection section of thick bamboo is installed to main part lower extreme, and the gas injection pore has been seted up at the main part middle part, and the connector inner chamber is provided with the end cap, and the end cap passes through the control pin setting and connects the lower part, the control pin screw hole has been seted up to the connector lower extreme, and the control pin groove has been seted up to the outer fringe of end cap, and the control pin comprises screw thread section and shearing section, and its shearing section inserts the control pin inslot of end cap, and the screw thread section is connected in the control pin screw hole of connector lower extreme.
2. The constant pressure open valve for oil well pipe string according to claim 1, wherein: the inner cavity wall of the connector is provided with a control step, the plug is a solid piston, and the shape of the plug is matched with that of the inner cavity of the connector.
3. The constant pressure open valve for oil well pipe string according to claim 1, wherein: the connector and the protection cylinder are respectively connected with the upper end and the lower end of the main body through threads.
4. The constant pressure open valve for oil well pipe string according to claim 1, wherein: the protection cylinder is cylindrical, and a cylinder cover of the protection cylinder is arranged outside the gas injection pore canal on the main body.
5. The constant pressure open valve for oil well pipe string according to claim 1, wherein: the upper part of the plug is provided with a packing groove, and a sealing packing is arranged in the packing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321811785.1U CN220748222U (en) | 2023-07-11 | 2023-07-11 | Tubular column constant pressure opening valve for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321811785.1U CN220748222U (en) | 2023-07-11 | 2023-07-11 | Tubular column constant pressure opening valve for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220748222U true CN220748222U (en) | 2024-04-09 |
Family
ID=90557866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321811785.1U Active CN220748222U (en) | 2023-07-11 | 2023-07-11 | Tubular column constant pressure opening valve for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220748222U (en) |
-
2023
- 2023-07-11 CN CN202321811785.1U patent/CN220748222U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104213861B (en) | A kind of expansion tube expanding process and tool system | |
| CN109630060B (en) | Repeatable non-killing well completion production string and construction method | |
| CN101929318B (en) | Stage cementing device | |
| CN206693997U (en) | Oil field separates adopts technology tubular column | |
| CN201908613U (en) | Opening valve type expansion packer | |
| CN201439701U (en) | Stage cementing distributor | |
| CN201202430Y (en) | Boring tool inner blowout preventer | |
| CN106761577A (en) | Oil field separates adopts technology tubular column | |
| CN220748222U (en) | Tubular column constant pressure opening valve for oil well | |
| CN116335579B (en) | Oil field well casing packer and non-cementing injection self-plugging staged fracturing method | |
| CN201318149Y (en) | Unidirectional inner blowout control pump-out type blanking plug | |
| CN110513070B (en) | Flap type downhole oil pipe hydraulic control blowout preventer | |
| CN100441830C (en) | Releasing gadget sealing insertion head gas-injection tube pile | |
| RU2513896C1 (en) | Method of dual operation of two strata with one well | |
| CN202946101U (en) | Self-closing hole non-drilling type hydraulic pressure classification hoop | |
| CN2846732Y (en) | Non-casting ball type blocking pressure signle flow device | |
| CN202745847U (en) | Controllable hydraulic ejector | |
| CN204941345U (en) | A kind of radial well transfer with packing function | |
| CN207863925U (en) | A kind of submersible electric pump flow string constant-pressure sliding sleeve | |
| CN211174070U (en) | Injection-production blowout-prevention oil well pump | |
| CN203394451U (en) | Leakage-sealing water-plugging oil production pipe column for thickened oil horizontal well | |
| CN201310314Y (en) | Multipurpose throwing-fishing type blocking and throttling device | |
| CN211448593U (en) | Suitable for CO2Huff-puff injection-production integrated wellhead device | |
| CN210859161U (en) | Hydraulic control blowout preventer for pump oil pipe | |
| CN211115879U (en) | Gap bridge pressing setting packer device of oil well pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |