CN213928332U - Oil well layering water distributor - Google Patents
Oil well layering water distributor Download PDFInfo
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- CN213928332U CN213928332U CN202022788420.4U CN202022788420U CN213928332U CN 213928332 U CN213928332 U CN 213928332U CN 202022788420 U CN202022788420 U CN 202022788420U CN 213928332 U CN213928332 U CN 213928332U
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Abstract
The utility model discloses an oil well layering injection mandrel, include: the lower joint, the outer protective cylinder, the upper joint, the layer of infusion tube, the central overflow tube, the pressure guide tube and the differential pressure flowmeter nipple; the lower end of the lower joint is connected with a packer at the lower end of the liquid production layer; the lower end of the outer protective cylinder is fixedly connected with the upper end of the lower joint; the upper end of the upper joint is connected with the packer at the upper end of the liquid production layer, and the lower end of the upper joint is fixedly connected with the upper end of the outer casing; the transfusion tube of the layer is fixedly connected with the lower joint and the upper joint; the pressure guide pipe is communicated with the lower end and the upper end of the infusion tube in the layer; the differential pressure flowmeter nipple is arranged on the pressure guide pipe; the central overflow pipe is fixedly connected with the lower joint and the upper joint. The utility model discloses a differential pressure sensor of differential pressure flowmeter nipple joint can measure the pressure differential of the orifice plate both sides in this layer transfer line, and then makes the water injection mandrel structure compacter, and is small, is convenient for transport, installation and use.
Description
Technical Field
The utility model belongs to the technical field of oil gas well logging, concretely relates to oil well layering water injection mandrel.
Background
At present, the water injection and oil displacement process is mature day by day in the field of oil well logging, and various water injection technologies are developed. The current main water injection well allocation technologies comprise an automatic flow measuring and adjusting instrument, a bidirectional pressure-controlled water distributor and an intelligent water distributor, and the technologies are particularly prominent in the intelligent water distributor technology: the method has advanced technology and wide application range, and is widely used in various oil fields at present.
In the field of water injection, common flow measurement methods include electromagnetism, ultrasound, vortex street and differential pressure. The measurement methods of electromagnetism, ultrasound and vortex street flow are greatly influenced by well conditions and are not suitable for long-term underground work. The differential pressure type flow measuring method is less influenced by well conditions and is a commonly used flow measuring method in the existing intelligent water distributor.
The current realization method of differential pressure type flow measurement in the intelligent water distributor is to use two pressure sensors to respectively test the pressures in front of and behind the pore plate, and calculate the flow through the difference value of the two pressure sensors. Two pressure sensors set up alone respectively and are connected with the both ends of this layer transfer line, occupy more space in protecting a section of thick bamboo outward for the external diameter of water injection mandrel is great, and then the volume of water injection mandrel is great, and consequently, transportation, installation and use are very inconvenient.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides an oil well layering water injection mandrel. The to-be-solved technical problem of the utility model is realized through following technical scheme:
an oil well zonal water distributor comprising: the lower joint, the outer protective cylinder, the upper joint, the layer of infusion tube, the central overflow tube, the pressure guide tube and the differential pressure flowmeter nipple;
the lower end of the lower joint is connected with a packer at the lower end of the liquid production layer;
the outer protective cylinder is of a tubular structure, and the lower end of the outer protective cylinder is fixedly connected with the upper end of the lower joint;
the upper end of the upper joint is connected with the packer at the upper end of the liquid production layer, and the lower end of the upper joint is fixedly connected with the upper end of the outer casing;
the infusion tube of the layer is positioned in the outer protective tube, the lower end of the infusion tube of the layer is fixedly connected with the lower joint, and the upper end of the infusion tube of the layer is fixedly connected and communicated with the upper joint;
the pressure guide pipe is positioned in the outer protective cylinder, the lower end of the pressure guide pipe is fixedly connected with the lower connector and is communicated with the lower end of the layer of infusion tube, and the upper end of the pressure guide pipe is fixedly connected with the upper connector and is communicated with the upper end of the layer of infusion tube;
the differential pressure flowmeter nipple is arranged on the pressure guide pipe and internally provided with a differential pressure sensor;
the central overflow pipe is positioned in the outer protective cylinder, the lower end of the central overflow pipe is fixedly connected and communicated with the lower joint, and the upper end of the central overflow pipe is fixedly connected and communicated with the upper joint.
In an embodiment of the present invention, the differential pressure flowmeter nipple includes: the sensor mounting seat, the pressing cover and the differential pressure sensor are arranged on the base;
the sensor mounting seat is fixedly connected with the pressure guide pipe and provided with a mounting groove;
the groove opening of the mounting groove is hermetically connected with the pressing cover, and a first measuring through hole is formed in the groove bottom;
the first measuring through hole is fixedly connected and communicated with the upper section of the pressure guide pipe;
the pressing cover is provided with a second measuring through hole;
the second measuring through hole is fixedly connected and communicated with the lower section of the pressure guide pipe;
the differential pressure sensor is fixedly arranged in the mounting groove, and the two pressure bearing surfaces face the first measuring through hole and the second measuring through hole respectively.
In an embodiment of the present invention, the differential pressure sensor includes: the device comprises a first measuring head, a connecting part, a second measuring head and a lead;
the pressure bearing surface of the first measuring head faces the first measuring through hole, and the pressure bearing surface of the second measuring head faces the second measuring through hole;
the first measuring head is fixedly connected with one end of the connecting part and is in sealing connection with the groove wall of the mounting groove through a first sealing ring;
the second measuring head is fixedly connected with the other end of the connecting part and is in sealing connection with the groove wall of the mounting groove through a second sealing ring;
and one end of the conducting wire is electrically connected with the first measuring head and the second measuring head.
In one embodiment of the utility model, the device also comprises a seal testing short joint;
the seal checking short section is positioned in the outer protective cylinder, fixedly arranged on the lower joint and electrically connected with the lead.
In one embodiment of the utility model, the utility model also comprises a water nozzle short joint;
the water nozzle short joint is positioned in the outer protective cylinder, is fixedly arranged on the lower joint, is connected with the layer of infusion tube and is communicated with the water outlet of the lower joint.
In an embodiment of the utility model, the device further comprises an inductance short section;
the inductance short section is positioned in the outer casing, is fixedly connected with the upper joint and is electrically connected with the circuit of the water nozzle short section.
In one embodiment of the utility model, the utility model also comprises a choke plate short joint;
the flow limiting plate nipple is positioned in the outer casing, is fixedly connected with the upper joint and is electrically connected with the circuit of the water nozzle nipple.
In one embodiment of the present invention, the device further comprises a junction box;
the junction box is positioned in the outer protective cylinder and fixedly connected with the lower joint.
In an embodiment of the present invention, the range of the differential pressure sensor is 0-2 MPa, the accuracy is 1 ‰, the pressure resistance is greater than or equal to 60MPa, and the measurement flow range is 4-500 square/day.
The utility model has the advantages that:
1. the utility model discloses a differential pressure sensor of differential pressure flowmeter nipple joint can measure the pressure differential of the orifice plate both sides in this layer transfer line, and differential pressure flowmeter nipple joint and connecting pipe occupy the space in the less outer casing, and then make the water injection mandrel structure compacter, and is small, be convenient for transportation, installation and use.
2. The utility model discloses a differential pressure sensor precision is high, has reduced the measuring error of water injection mandrel, and differential pressure sensor has ensured that play the discharge capacity and can accomplish lessly, and the upper limit of flow can accomplish great, can also guarantee the requirement of measuring accuracy simultaneously, and the water injection mandrel can reach the purpose of flow wide range within range dynamic adjustment and the water injection that becomes more meticulous.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural diagram of an oil well layered water distributor provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an oil well layered water distributor according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an oil well layered water distributor according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a differential pressure flowmeter nipple provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a differential pressure sensor according to an embodiment of the present invention.
Description of reference numerals:
10-lower joint; 11-a water outlet; 20-outer protective cylinder; 30-upper joint; 40-the layer of infusion tube; 50-central overflow tube; 60-pressure guiding pipe; 70-differential pressure flow meter nipple; 71-differential pressure sensor; 711-a first measuring head; 712-a connecting portion; 713-a second measuring head; 714-conducting wire; 715 — pressure bearing face of the first measuring head 711; 716 — pressure bearing face of second measuring head 713; 717-first sealing ring; 718-a second seal ring; 72-a sensor mount; 73-a compression cap; 74-mounting grooves; 75-a first measurement via; 76-a second measurement via; 80-seal checking short section; 90-a water nozzle short joint; 91-an inductance nipple; 92-restrictor nipple; 93-a junction box; 94-internal hexagonal bolt.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.
Example one
Referring to fig. 1, 2 and 3, an oil well zonal water distributor comprises: the device comprises a lower joint 10, an outer protective sleeve 20, an upper joint 30, a layer of infusion tube 40, a central overflow tube 50, a pressure guide tube 60 and a differential pressure flowmeter nipple 70. The lower end of the lower joint 10 is connected with a packer at the lower end of the fluid production zone. The outer protective cylinder 20 is a tubular structure, and the lower end of the outer protective cylinder 20 is fixedly connected with the upper end of the lower joint 10. The upper end of the upper joint 30 is connected with the packer at the upper end of the liquid production layer, and the lower end of the upper joint 30 is fixedly connected with the upper end of the outer sheath cylinder 20. In this embodiment, a water distributor is connected between the upper and lower packers. The transfusion tube 40 of the layer is positioned in the outer protective tube 20, the lower end of the transfusion tube 40 of the layer is fixedly connected with the lower joint 10, and the upper end is fixedly connected and communicated with the upper joint 30. The central overflow pipe 50 is positioned in the outer casing 20, the lower end of the central overflow pipe 50 is fixedly connected and communicated with the lower joint 10, and the upper end is fixedly connected and communicated with the upper joint 30.
In this embodiment, the injected water passes through the central overflow pipe 50 of the upper water distributor and enters the infusion tube 40 and the central overflow pipe 50 of the present layer through the upper joint 30 of the present layer water distributor, the injected water in the infusion tube 40 of the present layer enters the water injection layer of the present layer through the water nozzle and the water outlet 11 on the lower joint 10, and the injected water in the central overflow pipe 50 of the present layer enters the lower layer water distributor. Wherein, the central overflow pipe 50 is fixedly connected with the upper joint 30 and the lower joint 10 through a plurality of inner hexagonal bolts 94.
The pressure pipe 60 is located in the outer casing 20, the lower end of the pressure pipe 60 is fixedly connected with the lower joint 10 and communicated with the lower end of the layer of infusion tube 40, and the upper end of the pressure pipe 60 is fixedly connected with the upper joint 30 and communicated with the upper end of the layer of infusion tube 40. The differential pressure flowmeter nipple 70 is arranged on the pressure guiding pipe 60, and a differential pressure sensor 71 is arranged in the differential pressure flowmeter nipple 70. In this embodiment, the injected water in this layer of transfer line 40 can get into pressure pipe 60, differential pressure sensor 71 in the differential pressure flowmeter nipple joint 70 on pressure pipe 60 can carry out the measurement of pressure difference and flow, use a differential pressure sensor 71 to replace two pressure sensor, differential pressure detection has been accomplished, pressure pipe 60's diameter is less, differential pressure flowmeter nipple joint 70 and pressure pipe 60 occupy the space in less outer casing 20, and then make the water distributor structure compacter, small in size, be convenient for transportation, installation and use.
In the prior art, the flow rate is calculated by the difference between two pressure sensors. Due to working conditions, the pressure measuring ranges of the two pressure sensors need to be at least 60MPa, the pressure difference for flow measurement is only within 2MPa, and the utilization ratio of the pressure sensors is only less than 3.5%, so that the precision loss is brought (when the error of the pressure sensors is 1 per thousand, the absolute error is +/-0.06 MPa, and the precision of the pressure difference for flow measurement is reduced to 0.06MPa/2 MPa-3%). And any one of the two pressure sensors generates temperature drift, which has great influence on the accuracy of flow measurement, and is difficult to accurately measure for a long time.
Meanwhile, due to different geological conditions, different wells have different requirements on injection allocation amount, even the injection allocation requirements of each injection layer of the same well have larger difference, and dynamic adjustment on different injection allocation requirements cannot be realized by using one water distributor. At present, the field of stratified water injection puts forward a demand for refined water injection, puts forward a higher requirement on flow measurement accuracy, and needs to ensure that the injection allocation amount is small enough (4 square/day) and the accuracy is high (plus or minus 1 square/day) in the earlier stage when a traditional pressure sensor is used; the later stage requires that the injection allocation be large enough (500 square/day) with an accuracy of 2% FS to ensure that sufficient energy is provided to the formation. The existing water distributor which uses two pressure sensors for differential pressure detection needs at least three (4-40 square/day, 30-120 square/day, 80-500 square/day) water distributors to meet the requirements.
The range of the differential pressure sensor 71 used by the water distributor in the embodiment is (0-2) MPa, and the precision is 1 per mill (namely +/-0.002 MPa). The pressure resistance of the differential pressure sensor 71 is more than or equal to 60 MPa. The flow range measurable by the differential pressure sensor 71 is (4-500) square/day, the precision of small flow (4-50) square/day can reach (+ -0.8 square/day), and the precision of large flow (50-500) square/day can reach 1.5% FS, the water distributor of the embodiment can meet the requirement of refined water injection, the small starting displacement (4 square/day) can be ensured, the large upper flow limit (500 square/day) can be ensured, meanwhile, the requirement of testing precision can be ensured, the starting control quantity is small, the precision is high, the adjusting range is large, one water distributor can meet the requirement of the change of the distribution quantity in different water injection wells, different stratums and the whole period, and the universality is strong. Meanwhile, temperature drift caused by the use of a wide-range pressure sensor is avoided, so that a large measurement error (up to 10-20 square/day) is caused, and the long-term stability is good.
In a feasible implementation mode, the water distributor carries out differential pressure standard detection on the differential pressure flowmeter pup joint 70 before use, the standard detection range is 0-2 MPa, and the precision is 1 per mill (0.002 MPa). During calibration, a special air pressure calibration table ((-0.1-6) MPa) and a constant temperature box (adjustable from normal temperature to 150 ℃) are used for calibration, and the precision of the calibration table at least meets +/-0.001 MPa. After the differential pressure is calibrated, the differential pressure meter nipple 70 needs to perform flow calibration. The flow calibration is carried out on a water flow calibration platform, the calibration platform should meet the requirements of minimum starting displacement of 2 square/day, the precision of 0.5 square/day and the upper limit of flow of more than or equal to 550 square/day.
Example two
As shown in fig. 4, on the basis of the first embodiment, the present embodiment further defines a differential pressure flowmeter sub 70, including: a sensor mount 72, a hold down cap 73, and a differential pressure sensor 71. The sensor mounting seat 72 is fixedly connected with the pressure pipe 60, and the sensor mounting seat 72 is provided with a mounting groove 74. The notch of the mounting groove 74 is hermetically connected with the pressing cover 73, and a first measuring through hole 75 is formed in the bottom of the mounting groove 74. The impulse pipe 60 is divided into an upper section and a lower section by a differential pressure flowmeter nipple 70. The first measuring through hole 75 is fixedly connected and communicated with the upper section of the pressure guiding pipe 60. The pressing cover 73 is provided with a second measuring through hole 76. The second measuring through hole 76 is fixedly connected and communicated with the lower section of the pressure guiding pipe 60. The differential pressure sensor 71 is fixedly arranged in the mounting groove 74, and two pressure bearing surfaces of the differential pressure sensor 71 face the first measuring through hole 75 and the second measuring through hole 76 respectively. In this embodiment, water in the infusion tube 40 of the present layer can enter the pressure guiding tube 60 from both ends of the infusion tube 40 of the present layer, and water in two sections of the pressure guiding tube 60 respectively enters the first measuring through hole 75 and the second measuring through hole 76, and further contacts with two pressure bearing surfaces of the differential pressure sensor 71 to detect the differential pressure, so that the flow rate can also be obtained. The differential pressure flowmeter nipple 70 of the present embodiment is compact and simple in structure.
Further, as shown in fig. 4 and 5, the differential pressure sensor 71 includes: a first measuring head 711, a connecting portion 712, a second measuring head 713, and a wire 714. The pressure faces 715 of the first measuring head 711 face the first measuring through hole 75 and the pressure faces 716 of the second measuring head 713 face the second measuring through hole 76. The first measuring head 711 is fixedly connected to one end of the connecting portion 712, and the first measuring head 711 is hermetically connected to a groove wall of the mounting groove 74 through a first sealing ring 717. The second measuring head 713 is fixedly connected to the other end of the connecting portion 712, and the second measuring head 713 is hermetically connected to a groove wall of the mounting groove 74 through a second sealing ring 718. One end of the wire 714 is electrically connected to the first measurement head 711 and the second measurement head 713.
Further, as shown in fig. 3, the oil well layered water distributor further comprises a seal testing nipple 80. The seal testing short section 80 is positioned in the outer protective barrel 20, the seal testing short section 80 is fixedly arranged on the lower joint 10, and the seal testing short section 80 is electrically connected with the conducting wire 714. In this embodiment, test and seal functions such as nipple joint 80 is used for measuring pressure, the temperature of water injection mandrel, gathers differential pressure flowmeter nipple joint 70 data to and control water injection well choke nipple joint 90 moves.
Further, as shown in fig. 3, the oil well layered water distributor further comprises a water nozzle short joint 90. The water nozzle short section 90 is positioned in the outer protective cylinder 20, the water nozzle short section 90 is fixedly arranged on the lower joint 10, and the water nozzle short section 90 is connected with the layer of infusion tube 40 and is communicated with the water outlet 11 of the lower joint 10. In this embodiment, one end of the water nozzle short joint 90 is connected with the layer of the infusion tube 40, and the other end is communicated with the water outlet 11.
Further, as shown in fig. 3, the oil well layered water distributor further comprises an inductance nipple 91. The inductance short section 91 is positioned in the outer casing 20, the inductance short section 91 is fixedly connected with the upper joint 30, and the inductance short section 91 is electrically connected with the circuit of the water nozzle short section 90. In this embodiment, the inductance nipple 91 plays a filtering role in the control circuit of the motor of the water nozzle nipple 90.
Further, as shown in fig. 3, the oil well zonal water distributor further comprises a choke nipple 92. The flow restriction plate short section 92 is positioned in the outer casing 20, the flow restriction plate short section 92 is fixedly connected with the upper joint 30, and the flow restriction plate short section 92 is electrically connected with the circuit of the water nozzle short section 90. In this embodiment, the current-limiting plate nipple 92 is used for limiting the voltage of the control circuit of the motor of the water nozzle nipple 90 within the working current range, so as to avoid over-high or over-low current.
Further, as shown in fig. 2, the well zonal water distributor further comprises a junction box 93. The junction box 93 is positioned in the outer casing 20, and the junction box 93 is fixedly connected with the lower connector 10. In this embodiment, the junction box 93 is used for wiring and connecting various electronic components of the water distributor.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (9)
1. An oil well zonal water distributor, comprising: the device comprises a lower joint (10), an outer protective sleeve (20), an upper joint (30), a layer of infusion tube (40), a central overflow tube (50), a pressure guide tube (60) and a differential pressure flowmeter nipple (70);
the lower end of the lower joint (10) is connected with a packer at the lower end of the liquid production layer;
the outer protective barrel (20) is of a tubular structure, and the lower end of the outer protective barrel is fixedly connected with the upper end of the lower joint (10);
the upper end of the upper joint (30) is connected with the packer at the upper end of the liquid production layer, and the lower end of the upper joint is fixedly connected with the upper end of the outer casing (20);
the infusion tube (40) of the layer is positioned in the outer protective tube (20), the lower end of the infusion tube is fixedly connected with the lower joint (10), and the upper end of the infusion tube is fixedly connected and communicated with the upper joint (30);
the pressure guide pipe (60) is positioned in the outer protective sleeve (20), the lower end of the pressure guide pipe is fixedly connected with the lower joint (10) and is communicated with the lower end of the layer of infusion tube (40), and the upper end of the pressure guide pipe is fixedly connected with the upper joint (30) and is communicated with the upper end of the layer of infusion tube (40);
the differential pressure flowmeter nipple (70) is arranged on the pressure guide pipe (60), and a differential pressure sensor (71) is arranged in the differential pressure flowmeter nipple;
the central overflow pipe (50) is positioned in the outer casing (20), the lower end of the central overflow pipe is fixedly connected and communicated with the lower joint (10), and the upper end of the central overflow pipe is fixedly connected and communicated with the upper joint (30).
2. An oil well zonal water distributor according to claim 1, wherein said differential pressure flow meter sub (70) comprises: a sensor mounting seat (72), a pressing cover (73) and the differential pressure sensor (71);
the sensor mounting seat (72) is fixedly connected with the pressure guide pipe (60) and provided with a mounting groove (74);
the mounting groove (74) is hermetically connected with the pressing cover (73), and a first measuring through hole (75) is formed in the bottom of the groove;
the first measuring through hole (75) is fixedly connected and communicated with the upper section of the pressure guide pipe (60);
the pressing cover (73) is provided with a second measuring through hole (76);
the second measuring through hole (76) is fixedly connected and communicated with the lower section of the pressure guide pipe (60);
the differential pressure sensor (71) is fixedly arranged in the mounting groove (74), and the two pressure bearing surfaces face the first measuring through hole (75) and the second measuring through hole (76) respectively.
3. An oil well zonal water distributor according to claim 2, wherein said differential pressure sensor (71) comprises: a first measuring head (711), a connecting part (712), a second measuring head (713) and a conducting wire (714);
the pressure bearing surface of the first measuring head (711) faces the first measuring through hole (75), and the pressure bearing surface of the second measuring head (713) faces the second measuring through hole (76);
the first measuring head (711) is fixedly connected with one end of the connecting part (712) and is in sealing connection with the groove wall of the mounting groove (74) through a first sealing ring (717);
the second measuring head (713) is fixedly connected with the other end of the connecting part (712) and is in sealing connection with the groove wall of the mounting groove (74) through a second sealing ring (718);
one end of the conducting wire (714) is electrically connected with the first measuring head (711) and the second measuring head (713).
4. An oil well zonal water distributor according to claim 3, further comprising a seal sub (80);
the seal testing short joint (80) is positioned in the outer protective barrel (20), fixedly arranged on the lower joint (10) and electrically connected with the lead (714).
5. An oil well zonal water distributor according to claim 4, further comprising a water nozzle nipple (90);
the water nozzle short joint (90) is positioned in the outer casing (20), fixedly arranged on the lower joint (10), connected with the layer of infusion tube (40) and communicated with the water outlet (11) of the lower joint (10).
6. An oil well zonal water distributor according to claim 5, further comprising an induction sub (91);
the inductance short section (91) is positioned in the outer casing (20), is fixedly connected with the upper joint (30), and is electrically connected with a circuit of the water nozzle short section (90).
7. An oil well zonal water distributor according to claim 6, further comprising a choke nipple (92);
the flow limiting plate short section (92) is positioned in the outer casing (20), is fixedly connected with the upper joint (30), and is electrically connected with a circuit of the water nozzle short section (90).
8. An oil well zonal water distributor according to claim 7, further comprising a junction box (93);
the junction box (93) is positioned in the outer casing (20) and is fixedly connected with the lower joint (10).
9. The oil well layered water distributor according to claim 1, wherein the range of the differential pressure sensor (71) is 0-2 MPa, the precision is 1 per thousand, the pressure resistance is more than or equal to 60MPa, and the measuring flow range is 4-500 square/day.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022788420.4U CN213928332U (en) | 2020-11-26 | 2020-11-26 | Oil well layering water distributor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022788420.4U CN213928332U (en) | 2020-11-26 | 2020-11-26 | Oil well layering water distributor |
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| CN213928332U true CN213928332U (en) | 2021-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605444A (en) * | 2024-01-22 | 2024-02-27 | 西安思坦仪器股份有限公司 | High-temperature intelligent water distributor |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605444A (en) * | 2024-01-22 | 2024-02-27 | 西安思坦仪器股份有限公司 | High-temperature intelligent water distributor |
| CN117605444B (en) * | 2024-01-22 | 2024-04-12 | 西安思坦仪器股份有限公司 | High-temperature intelligent water distributor |
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