CN214741222U - Underground intelligent switch - Google Patents
Underground intelligent switch Download PDFInfo
- Publication number
- CN214741222U CN214741222U CN202120018329.6U CN202120018329U CN214741222U CN 214741222 U CN214741222 U CN 214741222U CN 202120018329 U CN202120018329 U CN 202120018329U CN 214741222 U CN214741222 U CN 214741222U
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- Prior art keywords
- piston
- cavity
- transmission screw
- driving
- screw rod
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- Expired - Fee Related
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- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000033001 locomotion Effects 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 210000003734 kidney Anatomy 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000003129 oil well Substances 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an intelligence switch in pit belongs to oil development technical field, include: the instrument outer tube, the upper joint, the cavity and the lower joint are connected in sequence; a battery, a circuit board, a driving motor and a transmission lead screw which are connected in sequence are arranged in the outer tube of the instrument; wherein, the instrument outer tube is also internally provided with a thrust bearing, one end of the transmission screw rod passes through the thrust bearing to be connected with the driving motor, and the other end of the transmission screw rod is connected with a sealing element; the sealing member includes: the driving sealing piston is connected with the transmission screw rod, the switching piston is connected with the driving sealing piston, and the driving sealing piston and the switching piston do linear motion in the cavity under the driving of the transmission screw rod; wherein, the transmission screw is provided with a limit switch matched with the thrust bearing for use, and the cavity is symmetrically provided with an inner liquid inlet and an inner liquid outlet which are vertical to the motion direction of the sealing element. The utility model discloses the setting of double-piston has increased holistic leakproofness to, reveal when having avoided annular space liquid to get into the cavity.
Description
Technical Field
The utility model relates to an oil development technical field, concretely relates to intelligence switch in pit.
Background
In the production process of an oil well, some oil wells have long production years and more mining layers, so that the flooding condition of the oil well is serious, the water layer position needs to be determined after the water is discharged from the oil well, water finding and water blocking operation is carried out, an underground switch device is needed during the water finding and water blocking operation, the underground water finding and water blocking operation is realized by matching with other tools through the underground switch device, and meanwhile, an underground switch device is also needed during the production capacity test of the oil well in a layering mode, so that the test operation of the oil well is completed by matching with other tools.
The related art adopts a downhole switching device mainly comprising: the upper joint, cavity and the lower joint that connect in order are connected with battery, motor, connecting rod and shutoff switch from last down in order in the cavity. The upper joint is connected with an oil pipe, the lower joint is connected with a tool specifically required during operation and then is put into a well, a power supply is provided for a motor through a battery, the motor drives a plugging switch connected with a connecting rod to be opened and closed, and operations such as water exploration and water blocking of an oil well or oil well testing are realized; however, the prior art has the defects that the sealing performance of the switch is poor, and the stress of the piston is not uniform.
Disclosure of Invention
The utility model provides an above-mentioned problem, provide an intelligence switch in pit.
The utility model adopts the technical proposal that: a downhole smart switch comprising: the instrument outer tube, the upper joint, the cavity and the lower joint are connected in sequence;
a battery, a circuit board, a driving motor and a transmission screw rod which are connected in sequence are arranged in the outer tube of the instrument; wherein, the instrument outer tube is also internally provided with a thrust bearing, one end of the transmission screw rod passes through the thrust bearing to be connected with the driving motor, and the other end of the transmission screw rod is connected with a sealing element;
the seal includes: the driving sealing piston is connected with the transmission screw rod, the switching piston is connected with the driving sealing piston, and the driving sealing piston and the switching piston do linear motion in the cavity under the driving of the transmission screw rod;
wherein, the transmission screw is provided with a limit switch matched with the thrust bearing for use, and the cavity is symmetrically provided with an inner liquid inlet and an inner liquid outlet which are vertical to the motion direction of the sealing element.
Furthermore, a data interface for charging the battery is arranged in the outer tube of the instrument.
Furthermore, a formation pressure gauge connector for detecting annular pressure at the inner liquid inlet is arranged on the lower connector.
Furthermore, a liquid inlet filter screen is arranged at the position of the inner liquid inlet.
Furthermore, the driving sealing piston is sleeved with a combined seal, and when the switch piston enters the cavity, the combined seal moves to be in contact with the upper joint.
Furthermore, the cavity is symmetrically provided with a gap bridge waist hole which is vertical to the motion direction of the sealing element, and the gap bridge waist hole is staggered with the inner liquid inlet.
Furthermore, when the switch piston enters the cavity, the inner liquid inlet is communicated with the inner liquid outlet; when the switch piston is withdrawn from the cavity, the annular liquid flows through the bridge kidney hole.
The utility model has the advantages that:
1. the arrangement of the double pistons increases the whole sealing performance, thereby avoiding leakage when annular liquid enters the cavity.
2. The double pistons are arranged, so that the stress of the pistons is balanced when the sealing element is in an opening state and a closing state, and the lead screw and the motor are prevented from being damaged due to compression.
3. The arrangement of the liquid inlet filter screen prevents foreign matters from entering the cavity from the inner liquid inlet to influence the normal work of the sealing element.
4. The setting of surface layer pressure gauge interface has made things convenient for the installation of press to, made things convenient for and continuously monitored the change of white pressure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
FIG. 1 is a front sectional schematic view of an embodiment of the present invention;
fig. 2 is a schematic diagram of a cavity side-sectional structure according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of the operation of the embodiment of the present invention.
Reference numerals:
the device comprises a data interface 1, a battery 2, an instrument outer tube 3, a circuit board 4, a driving motor 5, a limit switch 6, a transmission screw 7, an inner liquid outlet 8, a liquid inlet filter screen 9, an upper joint 10, a driving sealing piston 11-1, a switch piston 11-12, a cavity 12, a formation pressure gauge interface 13, an inner liquid inlet 14, a thrust bearing 15, a lower joint 16, a waist bridge hole 17 and a combined seal 18.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1 to 3, as shown in fig. 1 to 3, a downhole intelligent switch includes: the instrument outer tube 3, the upper joint 10, the cavity 12 and the lower joint 16 which are connected secondarily;
a battery 2, a circuit board 4, a driving motor 5 and a transmission screw 7 which are connected in sequence are arranged in the instrument outer tube 3; wherein, the instrument outer tube 3 is also provided with a thrust bearing 15, one end of the transmission screw 7 passes through the thrust bearing 15 to be connected with the driving motor 5, and the other end is connected with a sealing element;
the sealing member includes: the driving sealing piston 11-1 is connected with the transmission screw 7, the switch piston 11-12 is connected with the driving sealing piston 11-1, and the driving sealing piston 11-1 and the switch piston 11-12 are driven by the transmission screw 7 to do linear motion in the cavity 12;
wherein, the transmission screw 7 is provided with a limit switch 6 which is matched with the thrust bearing 15 for use, and the cavity 12 is symmetrically provided with an inner liquid inlet 14 and an inner liquid outlet 8 which are vertical to the motion direction of the sealing element.
It should be noted that, the battery, the driving circuit board and the driving motor are all fixed in the instrument outer tube through screws; the action of the sealing element is driven by the motion of the transmission lead screw, the motion of the transmission lead screw is output by the running of the driving motor, and the running of the driving motor is supplied by the energy of the battery;
specifically, the battery supplies energy to the driving motor, the driving motor works to drive the transmission lead screw to rotate, and the transmission lead screw converts the rotation into linear motion, so that the sealing element is pushed to reciprocate;
when the switch piston enters the cavity, the inner liquid inlet is communicated with the inner liquid outlet, and annular liquid flows from the inner liquid inlet to the inner liquid outlet;
when the switch piston exits from the cavity, the switch piston shields the inner liquid inlet, the annular liquid does not flow, and the annular liquid on the lower layer flows through the waist hole.
In fig. 3, P1 denotes the annular pressure, and P2 denotes the tubing pressure.
In an embodiment of the present invention, a data interface 1 for charging the battery 2 is disposed in the instrument outer tube 3.
The arranged data interface is convenient for charging the battery, so that frequent replacement of the battery is avoided.
In an embodiment of the present invention, the lower joint 16 is provided with a formation pressure gauge interface 13 for detecting the annular pressure at the inner inlet 14.
Wherein, the setting of surface layer pressure gauge interface has made things convenient for the installation of press to, made things convenient for and continuously monitored the change of white pressure
In an embodiment of the present invention, a liquid inlet filter 9 is disposed at the liquid inlet 14.
The liquid inlet filter screen is arranged to prevent foreign matters from entering the cavity from the inner liquid inlet to affect the normal work of the sealing element.
In an embodiment of the present invention, the driving sealing piston 11-1 is sleeved with a combined seal 18, and when the switching piston 11-12 enters the cavity, the combined seal 18 moves to contact with the upper joint 10.
The utility model discloses an in the embodiment, still the symmetry is equipped with on the cavity 12 and crosses bridge waist hole 17 with sealing member direction of motion looks vertically, and crosses bridge waist hole 17 and interior feed liquor 14 mouthful of position phase error.
In an embodiment of the present invention, when the switch piston 11-12 enters the cavity 112, the inner inlet 14 is communicated with the inner outlet 8; the annular fluid flow passes through the bridge kidney holes 17 as the switch pistons 11-12 exit the chamber 12.
The switch piston and the driving sealing piston are equal in diameter and connected in series, the piston is balanced in stress in a working state, and the piston does not influence annular hydraulic pressure in a closing state.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A downhole intelligent switch, comprising: the instrument outer tube, the upper joint, the cavity and the lower joint are connected in sequence;
a battery, a circuit board, a driving motor and a transmission screw rod which are connected in sequence are arranged in the outer tube of the instrument; wherein, the instrument outer tube is also internally provided with a thrust bearing, one end of the transmission screw rod passes through the thrust bearing to be connected with the driving motor, and the other end of the transmission screw rod is connected with a sealing element;
the seal includes: the driving sealing piston is connected with the transmission screw rod, the switching piston is connected with the driving sealing piston, and the driving sealing piston and the switching piston do linear motion in the cavity under the driving of the transmission screw rod;
wherein, the transmission screw is provided with a limit switch matched with the thrust bearing for use, and the cavity is symmetrically provided with an inner liquid inlet and an inner liquid outlet which are vertical to the motion direction of the sealing element.
2. A downhole intelligent switch according to claim 1, wherein a data interface for charging a battery is arranged in the instrument outer tube.
3. The downhole intelligent switch of claim 1, wherein the lower connector is provided with a formation pressure tap for detecting annular fluid pressure at the inner fluid inlet.
4. A downhole intelligent switch according to claim 3, wherein an inlet strainer is arranged at the inner inlet.
5. A downhole intelligent switch according to claim 1, wherein the driving sealing piston is sleeved with a combined seal, and when the switch piston enters the cavity, the combined seal moves to contact with the upper joint.
6. The underground intelligent switch according to claim 1, wherein a gap bridge waist hole perpendicular to the movement direction of the sealing element is symmetrically formed in the cavity, and the gap bridge waist hole is staggered with the inner liquid inlet.
7. The downhole intelligent switch of claim 6, wherein the internal liquid inlet is communicated with the internal liquid outlet when the switch piston enters the cavity; when the switch piston is withdrawn from the cavity, the annular liquid flows through the bridge kidney hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120018329.6U CN214741222U (en) | 2021-01-06 | 2021-01-06 | Underground intelligent switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120018329.6U CN214741222U (en) | 2021-01-06 | 2021-01-06 | Underground intelligent switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214741222U true CN214741222U (en) | 2021-11-16 |
Family
ID=78637902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120018329.6U Expired - Fee Related CN214741222U (en) | 2021-01-06 | 2021-01-06 | Underground intelligent switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214741222U (en) |
-
2021
- 2021-01-06 CN CN202120018329.6U patent/CN214741222U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |