CN213087981U - Device for measuring flow and water holding rate of stratified oil production well - Google Patents
Device for measuring flow and water holding rate of stratified oil production well Download PDFInfo
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- CN213087981U CN213087981U CN202021366281.XU CN202021366281U CN213087981U CN 213087981 U CN213087981 U CN 213087981U CN 202021366281 U CN202021366281 U CN 202021366281U CN 213087981 U CN213087981 U CN 213087981U
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Abstract
The utility model belongs to the technical field of oil development, and discloses a device for measuring the flow and the water holding rate of a stratified oil production well, which comprises an outer sensor pipe, a transition joint and a sensor joint, wherein a connecting sleeve and a water holding rate sensor are arranged in the outer sensor pipe; a turbine bracket, a turbine assembly and magnetic steel are arranged in the connecting sleeve, and a Hall device is also arranged in the connecting sleeve; the water holding capacity sensor is arranged in the transition joint; the Hall device and the water holding rate sensor are connected with an upper computer through leads. When fluid is produced in the well, the fluid pushes the turbine to rotate, the Hall device generates a pulse signal by sensing the change of the magnetic field, and the frequency of the pulse signal represents the rotating speed of the turbine and is directly proportional to the flow speed or the flow rate of the fluid produced in the well. A fluid inlet is formed in the position, corresponding to the sensor outer pipe, where the water-holding rate sensor is installed, fluid enters from the fluid inlet, and when the water-holding rates of the fluids near the sensor are different, the capacitance of the water-holding rate sensor is changed accordingly.
Description
Technical Field
The utility model belongs to the technical field of oil development, a measure device of layering oil recovery well flow and water holdup is related to.
Background
At present, in the cable control layered oil production process, the metering of the flow and the water content needs to be carried out on the surface, and the data has the problems of delay and inaccuracy. The fluid produced underground belongs to oil-gas-water three-phase flow or oil-water two-phase flow. Therefore, the electromagnetic flow meter and the ultrasonic flow meter commonly used for the water injection well are difficult to be used in the layered oil production well. In addition, the differential pressure flowmeter has problems of drift and low measurement accuracy. Therefore, a flowmeter and a water retention meter which have the advantages of no drift, high precision, high temperature resistance and small diameter are urgently needed in the cable control layered oil production process.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that above-mentioned prior art exists, the utility model aims to provide a measure device of layering oil recovery well flow and water holdup can carry out the accuracy measurement at the flow of the fluid in the pit of layering oil recovery well and water holdup.
The utility model discloses a realize through following technical scheme:
a device for measuring the flow and the water holding capacity of a layered oil production well comprises an outer sensor pipe, a transition joint and a sensor joint which are sequentially connected from top to bottom, wherein a connecting sleeve and a water holding capacity sensor are sequentially arranged in the outer sensor pipe from top to bottom;
a turbine bracket, a turbine assembly and magnetic steel which are sequentially connected from top to bottom are arranged in the connecting sleeve, and a Hall device is also arranged in the connecting sleeve and is arranged on one side of the magnetic steel;
the lower end of the water holdup sensor is arranged in the transition joint; a fluid inlet is arranged at the position of the sensor outer pipe corresponding to the water holding rate sensor;
the Hall device is connected with a first lead, the water-holding rate sensor is connected with a second lead, the first lead is used for outputting a flow signal, the second lead is used for outputting a water-holding rate signal, and the first lead and the second lead are connected with an upper computer;
the top end of the outer tube of the sensor is connected with a fixing ring, the fixing ring is sleeved with a mounting joint, and the mounting joint is connected with an oil tube during use.
Furthermore, the water holding capacity sensor adopts a capacitance type sensor.
Furthermore, an upper bearing is sleeved in the turbine support, a protrusion is arranged on the inner wall of the connecting sleeve, a lower bearing is mounted on the protrusion, and the bottom end of the magnetic steel is connected with the lower bearing.
Furthermore, a Hall device mounting joint is also arranged in the connecting sleeve, and the Hall device is mounted on the Hall device mounting joint;
the bottom of the connecting sleeve is provided with a support, the support is provided with a mounting hole, and the Hall device mounting joint is arranged in the mounting hole.
Furthermore, a first wire passing hole is formed in the Hall device mounting joint, a wire passing pipe is connected to the bottom end of the Hall device mounting joint, the other end of the wire passing pipe extends to the transition joint, a second wire passing hole is formed in the transition joint, and a third wire passing hole is formed in the sensor joint;
the first wire passing hole, the wire passing pipe, the second wire passing hole and the third wire passing hole are used as through holes of the first lead;
the third wire through hole is used as a through hole of the second lead.
Further, the lower end of the sensor joint is connected with a pressure bearing cylinder.
Further, the bottom of the water holding rate sensor is connected with a connecting screw rod, an insulating sleeve and a soldering lug are sleeved on the connecting screw rod, and one end of a second lead is connected with the soldering lug; the connecting screw rod is inserted in the transition joint.
Furthermore, the top end of the outer tube of the sensor is in threaded connection with the fixing ring, the lower end of the outer tube of the sensor is in threaded connection with the upper end of the transition joint, and the lower end of the transition joint is in threaded connection with the upper end of the sensor joint.
Furthermore, the upper end and the lower end of the sensor joint are both provided with a sealing ring, and the outer sleeve of the fixing ring is provided with the sealing ring.
Furthermore, the upper end and the lower end of the mounting joint are provided with oil pipe buckles, and the mounting joint is connected with the oil pipe through the oil pipe buckles.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a measure device of layering oil recovery well flow and water holdup comprises parts such as turbine assembly, hall device, water holdup sensor and joint, and each joint is connected the turbine and is held water rate sensor and fix. The turbine assembly is connected with the magnet steel, a Hall device capable of detecting a magnetic field is arranged at a position corresponding to the magnet steel, when fluid is produced in the well, the fluid can push the turbine to rotate, when the turbine rotates, the Hall device can generate a pulse signal through sensing the change of the magnetic field, the frequency of the pulse signal represents the rotating speed of the turbine, and the frequency of the pulse signal is in direct proportion to the flow speed or the flow of the fluid produced in the well. A fluid inlet is formed in the position, corresponding to the sensor outer pipe, where the water-holding rate sensor is installed, fluid enters from the fluid inlet, and when the water-holding rates of the fluids near the sensor are different, the capacitance of the water-holding rate sensor is changed accordingly. The turbine is adopted for measuring the flow, so that the problem of drift is avoided, and the linearity is high; the flow measurement adopts a flow collecting mode, the starting displacement is small, and a flow turbine with the volume of 0.8 square/day in a 5-1/2 inch casing can rotate; the water holding rate is measured by adopting a flow collecting mode, so that the measuring range and the measuring precision of the water holding rate are improved.
Furthermore, the first wire penetrates through the first wire passing hole, the wire passing pipe, the second wire passing hole and the third wire passing hole, is not contacted with fluid, is always protected in the pipe body or the wire passing hole, and can prolong the service life.
Furthermore, the upper and lower connecting modes of the installation joint are oil pipe buckles, and the installation joint can be conveniently connected into a layered oil production pipe column.
Drawings
FIG. 1 is a schematic view of the overall structure of the device for measuring the flow rate and water holdup of a stratified oil production well according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a sectional view B-B of fig. 1.
Wherein: the device comprises a fixing screw 1, a first sealing ring 2, a fixing ring 3, a second sealing ring 4, a sealing screw 5, a mounting joint 6, an upper bearing 7, an upper nut 8, a turbine support 9, a connecting sleeve 10, a turbine assembly 11, a sensor outer tube 12, a magnetic steel 13, a Hall device 14, a first lead 15, a lower bearing 16, an oil tube 17, a Hall device cap 18, a lower nut 19, a Hall device mounting joint 20, a support 21, a first screw 22, a lead pipe 23, a water holding capacity sensor 24, a fluid inlet 25, an insulating sleeve 26, a transition joint 27, a nut 28, a welding piece 29, a second lead 30, a third sealing ring 31, a sensor joint 32, a fourth sealing ring 33, a pressure-bearing cylinder 34, a second screw 35 and a third screw 36.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
as shown in fig. 1, the utility model discloses a device for measuring flow and water retention rate of a stratified oil production well, which comprises a sensor outer tube 12, a transition joint 27 and a sensor joint 32 which are connected in turn from top to bottom, wherein a connecting sleeve 10 and a water retention rate sensor 24 are arranged in turn from top to bottom in the sensor outer tube 12; a turbine bracket 9, a turbine assembly 11 and magnetic steel 13 which are sequentially connected from top to bottom are arranged in the connecting sleeve 10, a Hall device 14 is also arranged in the connecting sleeve 10, and the Hall device 14 is arranged on one side of the magnetic steel 13; the lower end of the water holdup sensor 24 is mounted in the transition joint 27; a fluid inlet 25 is arranged at the position of the sensor outer tube 12 corresponding to the water holding capacity sensor 24; the Hall device 14 is connected with a first lead 15, the water holdup sensor 24 is connected with a second lead 30, the first lead 15 and the second lead 30 are connected with an instrument circuit, and the instrument circuit is connected with an upper computer; the top end of the sensor outer tube 12 is connected with a fixing ring 3, the fixing ring 3 is sleeved with an installing joint 6, and the installing joint 6 is connected with an oil tube 17 in use.
When fluid is produced in the well, the fluid pushes the turbine to rotate, and when the turbine rotates, the Hall device 14 generates a pulse signal by sensing the change of the magnetic field, wherein the frequency of the pulse signal represents the rotating speed of the turbine and is in direct proportion to the flow speed or the flow rate of the fluid produced in the well.
The water-holding capacity sensor 24 is a capacitive sensor, and when the water-holding capacity of the fluid near the water-holding capacity sensor 24 is different, the capacitance of the water-holding capacity sensor 24 is changed.
Specifically, the upper bearing 7 is sleeved in the turbine support 9, a protrusion is arranged on the inner wall of the connecting sleeve 10, a lower bearing 16 is installed on the protrusion, and the bottom end of the magnetic steel 13 is connected with the lower bearing 16, so that the turbine is guaranteed to rotate flexibly.
Specifically, a hall device mounting joint 20 is further arranged in the connecting sleeve 10, and the hall device 14 is mounted on the hall device mounting joint 20; the bottom of the connecting sleeve 10 is provided with a bracket 21, the bracket 21 is provided with a mounting hole, and the Hall device mounting connector 20 is mounted in the mounting hole. The separated design of the hall device installation joint 20 and the connecting sleeve 10 is convenient for installation, and the hall device installation joint 20 can also be designed as an integral body with the connecting sleeve 10.
Preferably, a first wire passing hole is formed in the hall device mounting joint 20, the bottom end of the hall device mounting joint 20 is connected with the wire passing tube 23, the other end of the wire passing tube 23 extends to the transition joint 27, a second wire passing hole is formed in the transition joint 27, a third wire passing hole is formed in the sensor joint 32, and the first lead 15 sequentially penetrates through the first wire passing hole, the wire passing tube 23, the second wire passing hole and the third wire passing hole from top to bottom and then enters the pressure bearing cylinder 34; the second lead 30 passes through the third wire passing hole and enters the pressure bearing cylinder 34. The wire can not contact with the fluid and is always protected in the tube body or the wire passing hole, thereby avoiding corrosion and prolonging the service life.
Preferably, the lower end of the sensor connector 32 is connected to a pressure-bearing cylinder 34, and the instrument circuit is disposed in the pressure-bearing cylinder 34. The logging instrument is generally in a high-voltage state, when the circuit size is large, the logging instrument cannot be placed in a sensor connector, and if a pressure bearing barrel is not arranged, the instrument circuit can be crushed.
The bottom of the water holding rate sensor 24 is connected with a connecting screw rod, an insulating sleeve 26 and a soldering lug 29 are sleeved on the connecting screw rod, and one end of a second lead 30 is connected with the soldering lug 29; the connecting screw is inserted into the transition joint 27.
Specifically, the top end of the sensor outer tube 12 is in threaded connection with the fixing ring 3, the lower end of the sensor outer tube 12 is in threaded connection with the upper end of the transition joint 27, the lower end of the transition joint 27 is in threaded connection with the upper end of the sensor joint 32, and the lower end of the sensor joint 32 is in threaded connection with the upper end of the pressure-bearing cylinder 34.
The upper end and the lower end of the sensor joint 32 are both provided with a sealing ring, and the outer sleeve of the fixing ring 3 is provided with a sealing ring to ensure the sealing connection between the joints.
Preferably, the upper end and the lower end of the installation joint 6 are oil pipe buckles, and the installation joint 6 is connected with the oil pipe 17 through the oil pipe buckles. The upper end of the installation joint 6 can be connected with 2-7/8 inches of oil pipes. The lower end of the setting sub 6 was connected to 2-3/8 inches of tubing and the entire apparatus was connected directly to the production string.
During installation, the hall device installation connector 20 and the wire passing pipe 23 are welded together, and then the other end of the wire passing pipe 23 and the transition connector 27 are welded together.
The hall device 14 is connected to the first wire 15 and the hall device 14 is secured within the hall device mounting tag 20.
The other end of the first wire 15 is led out from the first wire passing hole of the hall device mounting connector 20, the wire passing pipe 23 and the wire passing hole of the transition connector 27.
The hall device cap 18 is screwed to the hall device mounting head 20, and the hall device cap 18 is a protective cap that protects the hall device 14 from external pressure and liquid.
The tab 29 and the second lead 30 are soldered together.
The water retention sensor assembly 24 is inserted into the transition joint 27, the insulating sleeve 26 and the soldering lug 29 are sequentially sleeved on the connecting screw of the water retention sensor assembly 24, and the nut 28 is screwed on the connecting screw. A third seal ring 31 and a fourth seal ring 33 are attached to the sensor joint 32.
The first wire 15 and the second wire 30 are passed through the center hole of the sensor connector 32, and the sensor connector 32 is screwed with the transition connector 27. Connected to the lower end of the sensor fitting 32 is an instrument pressure barrel 34. The lower bearing 16 is fixed to the connecting sleeve 10 by means of a lower nut 19. The turbine assembly 11 and the turbine support 9 are sequentially installed in the connecting sleeve 10, and as shown in fig. 2, the turbine support 9 is fixed on the connecting sleeve 10 by the second screw 35. The upper bearing 7 is screwed on the turbine bracket 9, the upper bearing 7 is adjusted to enable the turbine assembly 11 to rotate freely, the upper bearing 7 is kept still, and the upper nut 8 is screwed down. The bracket 21 is fitted into the connecting sleeve 10, and as shown in fig. 3, the bracket 21 is fixed to the connecting sleeve 10 by a first screw 22. The hall device caps 18 and the hall device mounting terminals 20 are inserted into the connecting sleeves 10 through the brackets 21, and the brackets 21 and the hall device mounting terminals 20 are fixed together by third screws 36 as shown in fig. 3. The outer sensor tube 12 is screwed onto the transition joint 27. And finishing the assembly of the turbine flow and water holding capacity sensor.
The fixing ring 3 is screwed to the outer sensor tube 12 and they are fixed together with the screw 1. The first sealing ring 2 is sleeved on the fixing ring 3. The stator ring 3 is inserted into the mount fitting 6 together with the turbine flow and water holding rate sensor, and the stator ring 3 is fixed to the mount fitting 6 by a seal screw 5. The whole device is assembled.
The instrument pressure bearing cylinder 34 is provided with an instrument circuit which further processes signals sent by the turbine flow and water holdup sensors and finally sends the signals to an upper computer on the ground through a cable.
When producing oil in layers, the fluids produced by the formation flow upward in tubing 17. Fluid enters the outer sensor tube 12 from the inlet 25 and flows into the upper oil tube through the water holdup sensor assembly 24 and the turbine assembly 11, respectively. When fluid flows through the turbine assembly 11, the magnetic steel 13 rotates with the turbine, and the magnetic field around the hall device 14 changes. The hall device 14 converts the change in the magnetic field into an electric pulse signal and outputs it through the first wire 15. The frequency of the pulse signal output by the Hall device is in direct proportion to the rotating speed of the turbine. The water holding capacity sensor 24 is a capacitive sensor, and different fluids have different dielectric constants, so that the capacitance measured by the capacitive sensor is different, and a water holding capacity signal is output from the second wire 30.
The measurement of the flow and the water holding rate is carried out in the connecting sleeve 10, the drift diameter of the connecting sleeve 10 is about 18mm, the diameter of the oil pipe 17 is generally 50mm, and compared with the measurement in the whole oil pipe 17, the measurement of the flow and the water holding rate adopts a flow collecting type structure, so that the starting discharge capacity of the flow is small, the measurement range of the water holding rate is large, and the precision is high.
Water retention describes the percentage of water per unit volume. The water cut is the percentage of water that flows through a cross section. The water content has a close relation with the water holding rate and the flow rate. The water yield and the oil yield can be obtained by comprehensively analyzing the flow and the water holding rate.
Claims (10)
1. A device for measuring the flow rate and the water holding capacity of a stratified oil production well is characterized by comprising a sensor outer pipe (12), a transition joint (27) and a sensor joint (32) which are sequentially connected from top to bottom, wherein a connecting sleeve (10) and a water holding capacity sensor (24) are sequentially arranged in the sensor outer pipe (12) from top to bottom;
a turbine bracket (9), a turbine assembly (11) and magnetic steel (13) which are sequentially connected from top to bottom are arranged in the connecting sleeve (10), a Hall device (14) is also arranged in the connecting sleeve (10), and the Hall device (14) is arranged on one side of the magnetic steel (13);
the lower end of the water holding capacity sensor (24) is arranged in the transition joint (27); a fluid inlet (25) is arranged at the position of the sensor outer pipe (12) corresponding to the water holding capacity sensor (24);
the Hall device (14) is connected with a first lead (15), the water-holding rate sensor (24) is connected with a second lead (30), the first lead (15) is used for outputting a flow signal, the second lead (30) is used for outputting a water-holding rate signal, and the first lead (15) and the second lead (30) are connected with an upper computer;
the top end of the sensor outer tube (12) is connected with a fixing ring (3), the fixing ring (3) is sleeved with an installing joint (6), and the installing joint (6) is connected with an oil tube (17) during use.
2. The apparatus for measuring zonal production well flow and water retention of claim 1, wherein the water retention sensor (24) is a capacitive sensor.
3. The device for measuring the flow rate and the water holding capacity of the stratified oil recovery well as the claim 1 is characterized in that an upper bearing (7) is sleeved in the turbine support (9), a bulge is arranged on the inner wall of the connecting sleeve (10), a lower bearing (16) is arranged on the bulge, and the bottom end of the magnetic steel (13) is connected with the lower bearing (16).
4. The device for measuring the flow rate and the water holding capacity of the stratified oil recovery well is characterized in that a Hall device mounting joint (20) is further arranged in the connecting sleeve (10), and the Hall device (14) is mounted on the Hall device mounting joint (20);
a support (21) is installed at the bottom of the connecting sleeve (10), an installation hole is formed in the support (21), and a Hall device installation connector (20) is installed in the installation hole.
5. The device for measuring the flow rate and the water retention rate of the stratified oil recovery well as defined in claim 4, wherein a first wire passing hole is formed in the Hall device mounting joint (20), a wire passing pipe (23) is connected to the bottom end of the Hall device mounting joint (20), the other end of the wire passing pipe (23) extends to the transition joint (27), a second wire passing hole is formed in the transition joint (27), and a third wire passing hole is formed in the sensor joint (32);
the first wire passing hole, the wire passing pipe (23), the second wire passing hole and the third wire passing hole are used as through holes of the first lead (15);
the third wire through hole is used as a through hole of the second lead (30).
6. The apparatus for measuring zonal production well flow and water holdup of claim 1, wherein a pressure bearing cartridge (34) is attached to the lower end of the sensor sub (32).
7. The device for measuring the flow rate and the water holding capacity of the stratified oil recovery well as the claim 1 is characterized in that the bottom of the water holding capacity sensor (24) is connected with a connecting screw rod, an insulating sleeve (26) and a soldering lug (29) are sleeved on the connecting screw rod, and one end of a second lead (30) is connected with the soldering lug (29); the connecting screw rod is inserted in the transition joint (27).
8. The device for measuring flow and water holdup in a stratified oil recovery well as in claim 1, wherein the top end of the outer sensor tube (12) is threadedly connected to the retainer ring (3), the lower end of the outer sensor tube (12) is threadedly connected to the upper end of the transition joint (27), and the lower end of the transition joint (27) is threadedly connected to the upper end of the sensor joint (32).
9. Device for measuring zonal production well flow and water retention according to claim 1, characterized in that sealing rings are provided at both the upper and lower ends of the sensor connection (32), and a sealing ring is provided outside the fixing ring (3).
10. The device for measuring flow and water holdup of a zonal production well according to claim 1, characterized in that the upper and lower ends of the installation joint (6) are tubing buckles, through which tubing buckles the installation joint (6) is connected to the tubing (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021366281.XU CN213087981U (en) | 2020-07-13 | 2020-07-13 | Device for measuring flow and water holding rate of stratified oil production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021366281.XU CN213087981U (en) | 2020-07-13 | 2020-07-13 | Device for measuring flow and water holding rate of stratified oil production well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213087981U true CN213087981U (en) | 2021-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021366281.XU Active CN213087981U (en) | 2020-07-13 | 2020-07-13 | Device for measuring flow and water holding rate of stratified oil production well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213087981U (en) |
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2020
- 2020-07-13 CN CN202021366281.XU patent/CN213087981U/en active Active
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