CN212671766U - Underground pressure and temperature monitoring device for submersible motor - Google Patents
Underground pressure and temperature monitoring device for submersible motor Download PDFInfo
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- CN212671766U CN212671766U CN202021949896.5U CN202021949896U CN212671766U CN 212671766 U CN212671766 U CN 212671766U CN 202021949896 U CN202021949896 U CN 202021949896U CN 212671766 U CN212671766 U CN 212671766U
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Abstract
The utility model discloses an oil-submersible motor is pressure and temperature monitoring devices in pit, this device is installed in the linear electric motor lower part, through the linear electric motor tubular column together go into the oil well down, utilize temperature sensor to gather linear electric motor outside temperature to with signal transmission for pressure and temperature transmission circuit, carry out the conversion to the inside temperature of motor and solve, pressure sensor probe mounting is at changer shell right-hand member, the sensitive face of probe and the inside hydraulic pressure direct contact of monitoring devices and indirect pressure in the pit that records. And transmits the pressure signal to the pressure and temperature transmitter circuits. The pressure and temperature transmitting circuit obtains real-time temperature and pressure data of the underground linear motor through calculation, and then transmits signals to the wellhead receiving device through the underground power cable, so that the underground pressure and temperature of the submersible motor are monitored in real time.
Description
Technical Field
The utility model relates to an oil well testing arrangement in pit, concretely relates to oily motor of diving is pressure and temperature monitoring device in pit.
Background
The oil field generally adopts the sucker-rod pump oil recovery system of beam-pumping unit, though have advantages such as simple structure, device are durable, the reliability is strong, the technology is mature, but also have some problems that are difficult to overcome: the system has the advantages that firstly, the system efficiency is low, the energy consumption is high, secondly, the rod and pipe are worn eccentrically, thirdly, the parameter adjustment is complex, the problems not only restrict the further improvement of the oil well in the maintenance-free period and reduce the production efficiency, but also increase the operation and maintenance cost in the later period of the oil well. At present, a rodless oil extraction process of a linear motor is developed, and the purpose of lifting and pumping oil is realized by directly driving an oil well pump to reciprocate through the linear motor arranged underground.
The downhole linear motor must satisfy two conditions to enable the submersible linear motor to work normally. Firstly, the working temperature of the environment where the submersible linear motor is located, and secondly, the submersible linear motor must be completely soaked in liquid when working. When the liquid level of underground oil is lower than that of the submersible linear motor, the linear motor can run in no-load mode and lose the heat dissipation condition, so that the motor is heated rapidly and damaged. Therefore, how to monitor the position of the submersible linear motor in the underground oil liquid and the temperature of the underground linear motor in real time is the key to determine whether the submersible linear motor works normally.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a submersible motor is pressure and temperature monitoring device in pit for solve prior art's problem, the utility model discloses can master the oil well production developments at any time, reach and optimize the artificial mining, reduce the cost of operation and improve the purpose of the economic benefits in oil well and oil field.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the underground pressure and temperature monitoring device for the submersible motor comprises a tail pipe plug connected to the lower part of a tail pipe of the linear motor, wherein the lower part of the tail pipe plug is connected with an upper connector, the lower part of the upper connector is connected with an upper plug, the lower part of the upper plug is connected with a filter outer cylinder, a filter is arranged in the filter outer cylinder, the lower part of the filter outer cylinder is connected with a lower plug, the lower plug is connected with a transmitter shell through a separation ring, a pressure and temperature transmitting circuit is arranged in the transmitter shell, the lower part of the transmitter shell is provided with an, the signal wire of the insulating oil pressure sensor probe is connected to the pressure and temperature transmitting circuit, and the insulating oil pressure sensor probe also comprises a temperature probe connected to the linear motor, the signal wire of the temperature probe is connected to the pressure and temperature transmitting circuit through a filter, and the pressure and temperature transmitting circuit is connected to a wellhead receiving device through a down-hole power cable;
the outer side of the upper plug, the outer barrel of the filter, the lower plug, the isolating ring and the transmitter shell is provided with an outer sleeve, the outer sleeve is in threaded connection with the upper joint, the lower side of the outer sleeve is in threaded connection with a bottom joint, the outer side of the lower plug, the isolating ring and the transmitter shell and the inner side of the outer sleeve and the bottom joint form an insulating oil cavity, and a one-way oil injection valve communicated to the insulating oil cavity is arranged on the bottom joint.
Furthermore, the tail pipe of the linear motor is connected with a tail pipe plug through a flange bolt, and the tail pipe plug is connected with the upper joint through a flange bolt.
Furthermore, the joints of the outer sleeve, the upper joint and the bottom joint are provided with fluororubber sealing rings.
Furthermore, the upper plug and the lower plug are respectively in threaded connection with two ends of the outer barrel of the filter, and sealing rings are arranged at the joints of the upper plug and the lower plug and the outer barrel of the filter.
Furthermore, the filter is encapsulated in the outer barrel of the filter through sealing glue, and the pressure and temperature transmitting circuit is encapsulated in the shell of the transmitter through the sealing glue.
Furthermore, a centralizer connecting port for connecting a centralizer is arranged at the lower part of the bottom joint.
Furthermore, a hexagonal wrench clamping groove is designed on the bottom joint.
Furthermore, a one-way valve plug matched with the one-way oil injection valve is arranged on the one-way oil injection valve.
Furthermore, the isolating ring is made of polytetrafluoroethylene materials.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses install in the linear electric motor lower part, together go into the oil well through the linear electric motor tubular column, utilize temperature sensor to gather linear electric motor outside temperature to give pressure and temperature transmission circuit with the signal transmission, carry out the conversion to the inside temperature of motor and solve, pressure sensor probe installs at changer shell right-hand member, and the sensitive face of probe and the inside hydraulic pressure direct contact of monitoring devices and indirect pressure in the pit of recording. And transmits the pressure signal to the pressure and temperature transmitter circuits. The pressure and temperature variable transmission circuit obtains real-time temperature and pressure data of the underground linear motor through calculation, and then transmits signals to the wellhead receiving device through the underground power cable, so that underground pressure and temperature of the submersible motor are monitored in real time, the production dynamics of an oil well can be mastered at any time, the purposes of optimizing artificial exploitation, reducing the operation cost and improving the economic benefits of the oil well and the oil field are achieved, meanwhile, the linear motor is effectively protected, the phenomenon that the heat dissipation condition is lost during no-load operation is avoided, and the motor is rapidly heated to cause the motor damage.
Furthermore, the joints of the outer sleeve, the upper joint and the bottom joint are provided with the fluororubber sealing rings, so that sealing can be effectively realized.
Furthermore, the lower part of the bottom connector is provided with a centralizer connecting port for connecting a centralizer, and when the underground monitoring device goes down a well, the bottom connector is provided with an elastic centralizer to prevent the underground monitoring device from colliding with an underground casing.
Further, the transmitter shell is not a ground wire, and in order to prevent the transmitter shell from being grounded, a circular isolating ring is connected with the filter shell, and the isolating ring is made of polytetrafluoroethylene materials and is effectively insulated.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the connection between the present invention and the linear motor.
The device comprises a tail pipe plug 1, a tail pipe plug 2, an upper connector 3, an upper plug 4, a filter outer cylinder 5, an outer sleeve 6, a lower plug 6, a spacer ring 7, a transmitter shell 8, a bottom connector 9, a flange bolt 10, a second sealing plug 11, a lead channel 12, a filter 13, a sealing ring 14, a pressure and temperature transmitting circuit 15, an insulating oil pressure sensor probe 16, a one-way oil injection valve 17, a one-way valve plug 18, a centralizer connecting port 19, a linear motor 20, a temperature probe 21, a first sealing plug 22, a threading pipe 23 and a linear motor tail pipe 24.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2, the underground pressure and temperature monitoring device for the submersible motor comprises a tail pipe plug 1 connected to the lower part of a tail pipe 24 of the linear motor, the tail pipe 24 of the linear motor is connected with the tail pipe plug 1 through a flange bolt 10, the lower part of the tail pipe plug 1 is connected with an upper joint 2, the tail pipe plug 1 is connected with the upper joint 2 through a flange bolt 10, the lower part of the upper joint 2 is connected with an upper plug 3, the lower part of the upper plug 3 is connected with a filter outer cylinder 4, a filter 13 is arranged in the filter outer cylinder 4, the filter 13 is encapsulated in the filter outer cylinder 4 through sealant, the lower part of the filter outer cylinder 4 is connected with a lower plug 6, the upper plug 3 and the lower plug 6 are respectively connected with two ends of the filter outer cylinder 4 through threads, sealing rings 14 are arranged at the joints of the upper plug 3 and the lower plug, the pressure and temperature transmitting circuit 15 is arranged in the transmitter shell 8, the pressure and temperature transmitting circuit 15 is encapsulated in the transmitter shell 8 through a sealant, an insulating oil pressure sensor probe 16 is arranged at the lower part of the transmitter shell 8, a signal line of the insulating oil pressure sensor probe 16 is connected to the pressure and temperature transmitting circuit 15, the pressure and temperature transmitting circuit also comprises a temperature probe 21 connected to the linear motor 20, the signal line of the temperature probe 21 is connected to the pressure and temperature transmitting circuit 15 through a filter 13, and the pressure and temperature transmitting circuit 15 is connected to a wellhead receiving device through a downhole power cable; wherein, be connected with threading pipe 23 between linear electric motor 20 and the linear electric motor tail pipe 24, the signal line of temperature probe 21 is connected to threading pipe 23 through the first sealed plug 22 on linear electric motor 20, then the signal line is connected to top connection 2 through linear electric motor tail pipe 24 and tail pipe end cap 1, is connected to the lead wire passageway 12 in the middle of top connection 3 through the second sealed plug 11 on top connection 2, after passing filter 13, is connected to pressure and temperature in the transmitter shell 8 by the passageway in the middle of lower ferry 6 and spacer ring 7 and becomes circuit 15.
Go up end cap 3, wave filter urceolus 4, end cap 6 down, the outside of spacer ring 7 and transmitter shell 8 is equipped with outer sleeve 5, and outer sleeve 5 passes through threaded connection with top connection 2, the downside of outer sleeve 5 has bottom joint 9 through threaded connection, the lower part of bottom joint 9 is equipped with the centralizer connector 19 that is used for connecting the centralizer, outer sleeve 5 all is provided with the fluorubber sealing washer with top connection 2 and the junction of bottom joint 9, and end cap 6 down, the outside of spacer ring 7 and transmitter shell 8 and the inboard of outer sleeve 5 and bottom joint 9 form insulating oil chamber, the design has hexagonal spanner screens groove on the bottom joint 9, be provided with the one-way oil filler valve 17 that communicates to insulating oil chamber on the bottom joint 9, be equipped with on the one-way oil filler valve 17 rather than complex check valve end cap 17.
The following is a detailed description of the operation process of the present invention:
the underground pressure and temperature monitoring device of the submersible linear motor mainly comprises a tail pipe plug 1, an upper connector 2, an upper plug 3, a filter outer cylinder 4, an outer sleeve 5, a lower plug 6, an isolating ring 7, a transmitter shell 8, a bottom connector 9, a flange bolt 10, a filter 13, a pressure and temperature transmitting circuit 15, a one-way oil injection valve 17, a one-way valve plug 18 and a centralizer connecting port 19.
The on-line monitoring device is arranged at the lower part of the linear motor 20 and is connected with a tail pipe 24 of the underground oil extraction linear motor through a flange bolt 10, so that a transitional connection interface, namely an upper connector 2, is designed between a tail pipe plug 1 of the oil extraction linear motor and the monitoring device. The upper part of the upper joint 2 is connected with a tail pipe plug 1 of the motor through a flange bolt 10, the lower part of the upper joint is connected with the outer cylinder 4 of the filter through a flange and a hexagon bolt, and meanwhile, the upper joint 2 is connected with the outer sleeve 5 through threads. The outer sleeve 5 serves as a protective sleeve for the entire monitoring device, which not only must be adapted to the diameter of the entire oil well, but should also have a high mechanical strength and corrosion resistance. The utility model discloses a material of 17-4PH can satisfy the operating condition of test instrument shell class part high temperature resistant, high pressure and the resistant strong corrosion in the pit. Two ends of the outer sleeve 5 are respectively connected with the upper joint 2 and the bottom joint 9 through threads, and 150-140 Mpa-resistant and corrosion-resistant special fluororubber sealing rings for petroleum are selected for sealing at the two ends, so that the first sealing of the underground monitoring device is realized. The upper plug 3 and the lower plug 6 are both connected with the filter outer cylinder 4 through threads and a high-temperature O-shaped sealing ring 14, so that the second sealing of the underground monitoring device is realized. Meanwhile, sealant is filled and sealed between the outer barrel 4 of the filter and the filter 13, so that the third sealing of the underground monitoring device is realized. The hexagonal wrench clamping groove is designed on the outer side of the bottom joint 9, so that the assembly and disassembly are convenient.
The upper joint 2 is provided with a second sealing plug 11, and a lead channel 12 is formed in the middle of the upper plug 3, so that the power supply positive joint of the underground monitoring circuit is conveniently connected with a motor star point. Bottom joint 9 passes through the helicitic texture and is connected with outer sleeve 5, bottom joint 9 side is equipped with a one-way oiling valve 17 and check valve end cap 18, after oil recovery motor is connected with monitoring devices, there is the glib talker at 17 tops of one-way oiling valve, pour into hydraulic insulation oil into to one-way oiling valve 17 through the glib talker, after oil is filled up, discharge the bubble through manifold cycles, connect bottom joint 9 with pressure balancing unit and link to each other, guarantee that the pressure of the inside hydraulic insulation oil of monitoring devices is the same with pressure prediction value in the pit. After the oil injection is finished, the inlet of the one-way oil injection valve 17 is sealed by a one-way valve plug 18 with a sealing ring. The lowest end of the monitoring device is provided with a centralizer connecting port 19, and an elastic centralizer is arranged on the bottom joint 19 when the underground monitoring device is lowered into the well, so that the underground monitoring device is prevented from colliding with an underground casing.
The pressure and temperature transmitting circuit 15 is located at the lower part of the monitoring device and sealed inside the transmitter shell 8 in the same way as the filter 13, the pressure and temperature transmitting circuit 15 is encapsulated inside the transmitter shell 8, the insulating oil pressure sensor probe 16 is installed at the lower end of the transmitter shell 8, and the probe sensitive surface is in direct contact with hydraulic oil inside the monitoring device to indirectly measure the underground pressure. The temperature probe 21 is arranged on the surface of the stator shell of the linear motor 20 and can indirectly measure the temperature of the motor, a signal wire of the temperature probe 21 is led into the linear motor through a first sealing plug 22, passes through a threading pipe 23, passes through a tail pipe 24 of the linear motor, passes through a lead channel 12, passes through a filter 13, passes through a lower plug 6 and an isolating ring 7 and is connected to a pressure and temperature transmitting circuit 15. The transmitter housing 8 is not a ground wire and is connected to the filter housing 8 by using a circular isolation ring 7 in order to prevent grounding thereof. The isolating ring 7 is made of polytetrafluoroethylene materials.
When the underground pressure and temperature monitoring device is used, the underground pressure and temperature monitoring device of the submersible motor is installed on the lower portion of the linear motor 20, the submersible motor and the linear motor are simultaneously put into an oil well through a linear motor pipe column, the temperature probe 21 is used for collecting the external temperature of the linear motor, signals are transmitted to the pressure and temperature transmitting circuit 15, the internal temperature of the motor is converted and solved, the insulating oil pressure sensor probe 16 is installed at the lower end of the transmitter shell 8, and the probe sensitive surface is in direct contact with the hydraulic oil in the monitoring device to indirectly measure the underground pressure. And transmits the pressure signal to the pressure and temperature transmitting circuit 15. The pressure and temperature transmitting circuit 15 obtains real-time temperature and pressure data of the underground linear motor through calculation, and then transmits signals to a wellhead receiving device through an underground power cable, so that the underground pressure and temperature of the submersible motor can be monitored in real time.
Claims (9)
1. The underground pressure and temperature monitoring device for the submersible motor is characterized by comprising a tail pipe plug (1) connected to the lower part of a tail pipe (24) of the linear motor, wherein the lower part of the tail pipe plug (1) is connected with an upper connector (2), the lower part of the upper connector (2) is connected with an upper plug (3), the lower part of the upper plug (3) is connected with a filter outer cylinder (4), a filter (13) is arranged in the filter outer cylinder (4), the lower part of the filter outer cylinder (4) is connected with a lower plug (6), the lower plug (6) is connected with a transmitter shell (8) through an isolating ring (7), a pressure and temperature transmitting circuit (15) is arranged in the transmitter shell (8), an insulating oil pressure sensor probe (16) is arranged at the lower part of the transmitter shell (8), and a signal wire of the insulating oil pressure sensor probe (16) is connected to the, the temperature sensor is characterized by further comprising a temperature probe (21) connected to the linear motor (20), a signal line of the temperature probe (21) is connected to a pressure and temperature transmitting circuit (15) through a filter (13), and the pressure and temperature transmitting circuit (15) is connected to a wellhead receiving device through a downhole power cable;
go up end cap (3), wave filter urceolus (4), end cap (6) down, spacer ring (7) and the outside of changer shell (8) are equipped with outer sleeve (5), and outer sleeve (5) pass through threaded connection with top connection (2), the downside of outer sleeve (5) has bottom to connect (9) through threaded connection, and end cap (6), the outside of spacer ring (7) and changer shell (8) and the inboard of outer sleeve (5) and bottom joint (9) form insulating oil pocket down, be provided with one-way oiling valve (17) that feed to insulating oil pocket on bottom connects (9).
2. The submersible motor downhole pressure and temperature monitoring device according to claim 1, characterized in that the linear motor tail pipe (24) is connected with the tail pipe plug (1) through a flange bolt (10), and the tail pipe plug (1) is connected with the upper joint (2) through the flange bolt (10).
3. The submersible motor downhole pressure and temperature monitoring device according to claim 1, characterized in that the joints of the outer sleeve (5) and the upper joint (2) and the bottom joint (9) are provided with fluororubber sealing rings.
4. The submersible motor downhole pressure and temperature monitoring device according to claim 1, characterized in that the upper plug (3) and the lower plug (6) are respectively in threaded connection with two ends of the filter outer cylinder (4), and sealing rings (14) are arranged at the joints of the upper plug (3) and the lower plug (6) and the filter outer cylinder (4).
5. The submersible motor downhole pressure and temperature monitoring device according to claim 1, characterized in that the filter (13) is potted in the filter outer cylinder (4) by means of a sealant, and the pressure and temperature transmission circuit (15) is potted in the transmitter housing (8) by means of a sealant.
6. The submersible motor downhole pressure and temperature monitoring device according to claim 1, characterized in that the lower part of the bottom joint (9) is provided with a centralizer connection port (19) for connecting a centralizer.
7. The submersible motor downhole pressure and temperature monitoring device according to claim 1, characterized in that the bottom joint (9) is designed with a hexagonal wrench detent.
8. The submersible motor downhole pressure and temperature monitoring device according to claim 1, characterized in that the one-way oil injection valve (17) is provided with a one-way valve plug (18) engaged therewith.
9. The submersible motor downhole pressure and temperature monitoring device according to claim 1, characterized in that the spacer ring (7) is made of teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021949896.5U CN212671766U (en) | 2020-09-08 | 2020-09-08 | Underground pressure and temperature monitoring device for submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021949896.5U CN212671766U (en) | 2020-09-08 | 2020-09-08 | Underground pressure and temperature monitoring device for submersible motor |
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| Publication Number | Publication Date |
|---|---|
| CN212671766U true CN212671766U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021949896.5U Active CN212671766U (en) | 2020-09-08 | 2020-09-08 | Underground pressure and temperature monitoring device for submersible motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145158A (en) * | 2020-09-08 | 2020-12-29 | 中国石油天然气股份有限公司 | Underground pressure and temperature monitoring device for submersible motor |
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2020
- 2020-09-08 CN CN202021949896.5U patent/CN212671766U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145158A (en) * | 2020-09-08 | 2020-12-29 | 中国石油天然气股份有限公司 | Underground pressure and temperature monitoring device for submersible motor |
| CN112145158B (en) * | 2020-09-08 | 2024-05-28 | 中国石油天然气股份有限公司 | Underground pressure and temperature monitoring device for submersible motor |
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