A dual-control intelligent water injection process system and its application method

Abstract

This invention discloses a dual-control intelligent water injection process system and its control method. It includes: a downhole injection string comprising tubing connected sequentially from top to bottom, multiple spaced cable-passing sealing tools and dual-control intelligent water distributors, and a plug; a mechanically fitted downhole packer is provided on the outer periphery of each cable-passing sealing tool, and the blind screen is located on the outer periphery of the dual-control intelligent water distributor; a steel pipe cable passes sequentially from top to bottom through the multiple cable-passing sealing tools and is electrically connected to the multiple dual-control intelligent water distributors; the upper end of the steel pipe cable is electrically connected to a cable-operated explosion-proof surface controller; a measurement and adjustment instrument is lowered into the downhole injection string by a surface winch via a steel wire cable; the measurement and adjustment instrument can be selectively coupled with the multiple dual-control intelligent water distributors; the steel wire cable is electrically connected to the simultaneous measurement and adjustment surface controller. The beneficial effect of this invention is that it enables the simultaneous measurement and adjustment of water injection by the cable-operated explosion-proof surface controller and the simultaneous measurement and adjustment surface controller.

Description

Technical Field

[0001] This invention relates to the field of oilfield stratified water injection technology, and in particular to a dual-control intelligent measurement and adjustment water injection process system. Background Technology

[0002] Over the past 20 years, the stratified water injection technology in offshore oilfields has gradually developed into four main water injection technologies: hollow inheritance, simultaneous measurement and adjustment, pre-installed cable, and cableless water injection. These technologies enable precise stratification, efficient measurement and adjustment, accurate injection allocation, and intelligent management of water injection wells in the Bohai Oilfield, meeting the needs of enhanced water drive, tapping potential oil layers, and increasing oilfield production. However, each technology employs a single measurement and control method.

[0003] However, with the widespread application of the technology in the field, the limitations of a single measurement and control method in the Bohai Oilfield water injection process have become increasingly apparent. The downhole operating environment of water injection wells is complex, and measurement and control tools are placed downhole for extended periods. Especially under ultra-high temperature and pressure conditions, these tools are susceptible to the complex downhole environment, leading to measurement and control function failures and reduced stability. This results in a short lifespan of the process tubing, requiring tubing removal and tool replacement, impacting normal production and incurring additional operating costs. Therefore, to improve process reliability and ensure continuous high and stable oilfield production, this paper proposes an innovative dual-control intelligent measurement and control water injection process system. This system addresses the shortcomings of existing intelligent injection processes, which rely solely on a single measurement and control method and can only restore process tubing measurement and control functions by moving the tubing when tools fail. This system compensates for the deficiencies in offshore oilfield water injection measurement and control processes, providing strong technical support for oilfield development. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-control intelligent measurement and adjustment water injection process system, which can measure and adjust water injection through a cable explosion-proof ground controller and a simultaneous measurement and adjustment ground controller, and the two measurement and adjustment methods do not interfere with each other; it extends the service life of the process tubing, reduces the risk of moving tubing, and provides strong technical support for increasing production and injection.

[0005] The purpose of this invention is to provide a control method for a dual-control intelligent measurement and adjustment water injection process system, which can measure and adjust water injection separately through a cable explosion-proof ground controller or a simultaneous measurement and adjustment ground controller, and the two measurement and adjustment methods do not interfere with each other; extend the service life of the process tubing, reduce the risk of moving tubing, and provide strong technical support for increasing production and injection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution, including:

[0007] The downhole injection string includes tubing connected from top to bottom, multiple spaced cable sealing tools and dual-control intelligent water distributors, and a round plug at the end; each cable sealing tool is equipped with a mechanically fitted downhole packer on its outer periphery, and adjacent downhole packers are connected by a blind screen tube; the blind screen tube is located on the outer periphery of the dual-control intelligent water distributor and corresponds one-to-one with the dual-control intelligent water distributor;

[0008] The steel pipe cable passes through multiple cable sealing tools from top to bottom and is electrically connected to multiple dual-control intelligent water distributors respectively; the upper end of the steel pipe cable is electrically connected to the cable explosion-proof ground controller.

[0009] The measurement and adjustment instrument is lowered into the downhole injection string by a surface winch via a steel wire cable; the measurement and adjustment instrument can be selectively used with multiple dual-control intelligent water distributors; the end of the steel wire cable is electrically connected to the ground controller for simultaneous measurement and adjustment via a surface cable; the measurement and adjustment instrument is used to monitor downhole flow rate, pressure, and temperature data, and transmit the downhole flow rate, pressure, and temperature data to the ground controller for simultaneous measurement and adjustment.

[0010] The opening of the outlet of the dual-control intelligent water distributor can be adjusted by dual control. It is also equipped with an orifice plate flow meter for detecting downhole flow, pressure and temperature data. The orifice plate flow meter is electrically connected to the cable explosion-proof ground controller and is used to return the downhole flow, pressure and temperature data to the cable explosion-proof ground controller.

[0011] Preferably, the dual-control intelligent water distributor includes:

[0012] The outer casing has an upper connector and a lower connector connected to its upper and lower ends, respectively; an axial through hole is provided in the center of the outer casing; a positioning step is provided on the inner circumference of the middle part of the upper connector for cooperating with the positioning arm in the middle of the measuring and adjusting instrument; a first circumferential step and a second circumferential step are provided on the inner and outer circumferences of the lower end of the upper connector, respectively.

[0013] A central cylinder is disposed within the through hole, and the outer circumference of the central cylinder is adapted to the inner circumference of the through hole; a through central hole is provided at the center of the central cylinder; a first ring extending outward is provided on the upper outer circumference of the central cylinder; the upper and lower end faces of the first ring are smooth planes, and the upper and lower end faces of the first ring abut against the upper connector and the upper end of the outer shell, respectively; a first gear structure is provided on the lower outer circumference of the central cylinder; the central cylinder is used to rotate under the drive of the measuring and adjusting instrument;

[0014] The first preload spring and the second preload spring are respectively disposed on the first circumferential step and the second circumferential step. The upper ends of the first preload spring and the second preload spring abut against the upper connector; the lower ends of the first preload spring and the second preload spring abut against the first ring.

[0015] An annular groove is provided on the inner circumference of the upper part of the outer shell, which cooperates with the central cylinder to form a cavity;

[0016] A pair of first crescent-shaped through holes, a pair of second crescent-shaped through holes, and a pair of third crescent-shaped through holes are respectively mirror-image through holes on the upper wall of the positioning step, the first ring, and the annular slot, and communicate with the cavity; the arc of the first crescent-shaped through holes, the second crescent-shaped through holes, and the third crescent-shaped through holes is 100° to 120°.

[0017] A pair of adjustment slots are radially disposed on the upper part of the central cylinder and communicate with the cavity; the adjustment slots are used to cooperate with the elastic arm at the lower part of the measuring and adjusting instrument;

[0018] A pair of flow channels are radially disposed in the middle of the central cylinder and communicate with the cavity;

[0019] A first mounting hole is provided in the middle of the housing, located below the cavity, and communicates with the cavity;

[0020] The water outlet is radially disposed on the outer casing and communicates with the first mounting hole;

[0021] The mounting groove is disposed on the lower inner periphery of the housing, located below the first mounting hole, and communicates with the first mounting hole;

[0022] The second mounting hole is provided in the lower part of the housing, located below the mounting groove, and communicates with the mounting groove;

[0023] An adjusting seat is disposed in the mounting groove. A second gear structure is provided on the outer periphery of the adjusting seat, and the second gear structure meshes with the first gear structure. A first inner hole is provided at the center of the adjusting seat, and an internal thread is provided on the inner periphery of the first inner hole.

[0024] A water nozzle seat, at least partially disposed within the first inner hole of the adjusting seat, has a second ring extending outward at its lower part, and the second ring has an external thread adapted to the internal thread; a flow hole is radially provided on the side wall of the water nozzle seat; the water nozzle seat is used to axially move up and down under the drive of the adjusting seat, thereby controlling the opening and closing degree of the water outlet;

[0025] A motor is installed in the second mounting hole, and a first control module is provided at the lower end of the motor. The output shaft of the motor is connected to a transmission rod, which is inserted into the water nozzle seat. A bushing is provided at the upper end of the transmission rod. The motor is used to drive the bushing to rise and fall, thereby controlling the opening and closing degree of the water outlet.

[0026] A retaining ring is threaded onto the upper part of the first mounting hole;

[0027] An orifice plate flow meter is installed above the first mounting hole and above the fixing ring, and is used to detect downhole flow, pressure and temperature.

[0028] Preferably, the upper connector and the lower connector are respectively provided with a first through hole and a second through hole for axial wire passage.

[0029] Preferably, a pair of anti-rotation blocks are provided on the outer periphery of the middle part of the faucet seat; a limiting groove adapted to the anti-rotation blocks is provided on the inner periphery of the upper part of the adjusting seat; and a ceramic sleeve for providing wear resistance is provided on the inner periphery of the upper part of the faucet seat.

[0030] Preferably, the measuring and adjusting instrument includes:

[0031] The second control module is located at the upper end of the measuring and adjusting instrument and is used to electrically connect with the ground controller for simultaneous measurement and adjustment, and to monitor downhole flow, pressure and temperature data.

[0032] The motor module is located in the upper middle part of the measuring and adjusting instrument and is electrically connected to the second control module for outputting rotational power;

[0033] A pair of positioning arms, rotatably mounted on the lower middle part of the measuring and adjusting instrument, are used to engage with the positioning steps after opening;

[0034] A pair of adjusting arms, which are telescopically mounted on the lower part of the measuring and adjusting instrument and connected to the motor module, are used to cooperate with the adjusting groove to drive the central cylinder to rotate.

[0035] Preferably, the steel pipe cable is connected and sealed to the cable sealing tool via NPT threads and Swagelok buckles.

[0036] Preferably, it also includes:

[0037] A fixed pulley, located above the wellhead, is used to support the steel wire cable.

[0038] A control method for a dual-control intelligent measurement and adjustment water injection process system as described in any one of the above claims, characterized by comprising the following steps:

[0039] a. Multiple dual-control intelligent water distributors use orifice plate flow meters to collect downhole flow, pressure, and temperature data for their respective layers;

[0040] b. The orifice plate flowmeter transmits the collected downhole flow, pressure, and temperature data to the cabled explosion-proof ground controller via steel pipe cables.

[0041] c. The cable-operated explosion-proof ground controller reads the downhole flow rate, pressure, and temperature data, and sends commands through steel pipe cables to adjust the outlet opening of multiple dual-control intelligent water distributors, thereby realizing direct reading of water injection parameters of each layer of the well from the ground and online adjustment of the water injection volume of each layer.

[0042] A control method for a dual-control intelligent measurement and adjustment water injection process system as described in any one of the above claims, characterized by comprising the following steps:

[0043] S1. Start the ground winch and lower the measuring and adjusting instrument into the downhole injection string through the steel wire cable, so that the measuring and adjusting instrument can be selectively matched with multiple dual-control intelligent water distributors.

[0044] S2. The measuring and adjusting instrument measures the downhole flow rate, pressure, and temperature data of the layer where the dual-control intelligent water distributor is located, and transmits the downhole flow rate, pressure, and temperature data to the ground controller for simultaneous measurement and adjustment via steel wire cable;

[0045] S3. The ground controller that measures and adjusts simultaneously reads the downhole flow rate, pressure, and temperature data. It then sends commands via steel wire cable to adjust the outlet opening of the dual-control intelligent water distributor that works in conjunction with the measuring and adjusting instruments, thereby enabling direct reading of the water injection parameters of each layer downhole from the ground and online adjustment of the water injection volume of each layer.

[0046] Preferably, when a bushing of a dual-control intelligent water distributor experiences a jamming fault, the remaining normal dual-control intelligent water distributors are controlled via a cable-operated explosion-proof ground controller and a steel pipe cable. The ground winch is then activated, and the measuring and adjusting instrument is lowered into the downhole injection string via a steel wire cable, allowing the measuring and adjusting instrument to engage with the faulty dual-control intelligent water distributor. The adjusting arm of the measuring and adjusting instrument is inserted into the adjusting groove. The ground controller, through a second control module, issues a command to the motor module to output rotational power. The measuring and adjusting instrument drives the central cylinder to rotate. The first and second gear structures at the lower end of the central cylinder mesh, driving the adjusting seat to rotate. The water nozzle seat rises and falls axially under the influence of the adjusting seat, thereby controlling the opening and closing degree of the water outlet.

[0047] The beneficial effects of this invention are: the ground can measure and adjust water injection separately through a cable-operated explosion-proof ground controller and a simultaneous measurement and adjustment ground controller, and the two measurement and adjustment methods do not interfere with each other; it extends the service life of the process tubing, reduces the risk of moving tubing, and provides strong technical support for increasing production and injection. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of a dual-control intelligent measurement and adjustment water injection process system according to the present invention.

[0049] Figure 2 This is a schematic diagram of the dual-control intelligent water distributor in this invention (outlet closed).

[0050] Figure 3 This is a schematic diagram of the dual-control intelligent water distributor in this invention (the outlet opening is controlled by a bushing).

[0051] Figure 4 This is a schematic diagram of the dual-control intelligent water distributor in this invention (the water outlet opening is controlled by the water tap seat).

[0052] Figure 5 This is a schematic diagram of the water tap seat in this invention.

[0053] Figure 6 This is a schematic diagram of the motor in this invention.

[0054] Figure 7 This is a schematic diagram of the measuring and adjusting instrument in this invention. Detailed Implementation

[0055] The invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0056] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0057] like Figure 1-7 As shown, a dual-control intelligent measurement and adjustment water injection process system of the present invention includes:

[0058] The downhole injection string includes tubing 1 connected from top to bottom, multiple spaced cable sealing tools 2 and dual-control intelligent water distributors 3, and a round plug 4 at the end; each cable sealing tool 2 is provided with a mechanically engaged downhole packer 5 on its outer periphery, and adjacent downhole packers are connected by a blind screen tube 6; the blind screen tube 6 is located on the outer periphery of the dual-control intelligent water distributor 3 and corresponds one-to-one with the dual-control intelligent water distributor 3;

[0059] The steel pipe cable 7 passes through multiple cable sealing tools 2 from top to bottom and is electrically connected to multiple dual-control intelligent water distributors 3 respectively; the upper end of the steel pipe cable 7 is electrically connected to the cable explosion-proof ground controller 8.

[0060] The measuring and adjusting instrument 9 is lowered into the downhole injection string by a surface winch 10 via a steel wire cable 11; the measuring and adjusting instrument 9 can be selectively used with multiple dual-control intelligent water distributors 3; the end of the steel wire cable 11 is electrically connected to the ground controller 13 for simultaneous measurement and adjustment via a surface cable 12; the measuring and adjusting instrument 9 is used to monitor downhole flow rate, pressure, and temperature data, and transmit the downhole flow rate, pressure, and temperature data to the ground controller 13 for simultaneous measurement and adjustment.

[0061] The opening of the outlet of the dual-control intelligent water distributor 3 can be adjusted by dual control. It is also equipped with an orifice plate flow meter 382 for detecting downhole flow, pressure and temperature data. The orifice plate flow meter 382 is electrically connected to the cable explosion-proof ground controller 8 and is used to return the downhole flow, pressure and temperature data to the cable explosion-proof ground controller 8.

[0062] In another embodiment, the dual-control intelligent water distributor 3 includes:

[0063] The outer casing 310 has an upper connector 320 and a lower connector 330 connected to its upper and lower ends, respectively; an axial through hole is provided at the center of the outer casing 310; a positioning step 321 is provided on the inner circumference of the middle part of the upper connector 320 for cooperating with the positioning arm 930 in the middle of the measuring and adjusting instrument 9; a first circumferential step 322 and a second circumferential step 323 are provided on the inner and outer circumferences of the lower end of the upper connector 320, respectively;

[0064] A central cylinder 340 is disposed within the through hole, and the outer periphery of the central cylinder 340 is adapted to the inner periphery of the through hole; a through central hole is provided at the center of the central cylinder 340; a first ring 341 extending outward is provided on the upper outer periphery of the central cylinder 340; the upper and lower end faces of the first ring 341 are smooth planes, and the upper and lower end faces of the first ring 341 abut against the upper connector 320 and the upper end of the outer shell 310, respectively; a first gear structure 342 is provided on the lower outer periphery of the central cylinder 340; the central cylinder 340 is used to rotate under the drive of the measuring and adjusting instrument 9.

[0065] The first preload spring 324 and the second preload spring 325 are respectively disposed on the first circumferential step 322 and the second circumferential step 323. The upper ends of the first preload spring 324 and the second preload spring 325 abut against the upper connector 320; the lower ends of the first preload spring 324 and the second preload spring 325 abut against the first ring 341.

[0066] An annular slot 311 is provided on the inner circumference of the upper part of the outer shell, and cooperates with the central cylinder to form a cavity;

[0067] A pair of first crescent-shaped through holes 326, a pair of second crescent-shaped through holes 343, and a pair of third crescent-shaped through holes 312 are respectively mirror-image through holes on the upper walls of the positioning step 321, the first ring 341, and the annular groove 311, and communicate with the cavity; the arc of the first crescent-shaped through holes 326, the second crescent-shaped through holes 343, and the third crescent-shaped through holes 312 is 100° to 120°.

[0068] A pair of adjustment grooves 344 are radially disposed on the upper part of the central cylinder 340 and communicate with the cavity; the adjustment grooves 344 are used to cooperate with the elastic arm 940 at the lower part of the measuring and adjusting instrument 9;

[0069] A pair of flow channels 345 are radially disposed in the middle of the central cylinder 340 and communicate with the cavity;

[0070] A first mounting hole 313 is provided in the middle of the housing, located below the cavity, and communicates with the cavity;

[0071] The water outlet 314 is radially disposed on the housing and communicates with the first mounting hole;

[0072] Mounting groove 315 is disposed on the lower inner periphery of the housing, located below the first mounting hole, and communicating with the first mounting hole;

[0073] The second mounting hole 316 is provided in the lower part of the housing, located below the mounting groove, and communicates with the mounting groove;

[0074] An adjusting seat 350 is disposed in the mounting groove 315. A second gear structure 351 is provided on the outer periphery of the adjusting seat 350, and the second gear structure 351 meshes with the first gear structure 342. A first inner hole is provided at the center of the adjusting seat 350, and an internal thread is provided on the inner periphery of the first inner hole.

[0075] A water nozzle seat 360 is at least partially disposed within the first inner hole of the adjusting seat 350. The lower part of the water nozzle seat 360 is provided with an outwardly extending second ring 361, and the second ring is provided with an external thread adapted to the internal thread. A flow hole 362 is provided radially on the side wall of the water nozzle seat 360. The water nozzle seat 360 is used to axially lift and lower under the action of the adjusting seat, thereby controlling the opening and closing degree of the water outlet.

[0076] A motor 371 is installed in the second mounting hole 316. A first control module 372 is provided at the lower end of the motor 371. The output shaft of the motor is connected to a transmission rod 373. The transmission rod 373 is inserted into the water nozzle seat. A bushing 374 is provided at the upper end of the transmission rod. The motor is used to drive the bushing 374 to rise and fall, thereby controlling the opening and closing degree of the water outlet 314.

[0077] A retaining ring 381 is threaded onto the upper part of the first mounting hole 313;

[0078] An orifice plate flow meter 382 is disposed on the upper part of the first mounting hole 313 and above the fixing ring 381, and is used to detect downhole flow, pressure and temperature.

[0079] In another embodiment, the upper connector 320 and the lower connector 330 are respectively provided with an axial first wire through hole 327 and a second wire through hole 331.

[0080] In another embodiment, a pair of anti-rotation blocks 363 are provided on the outer periphery of the middle part of the water nozzle seat 360; a limiting groove adapted to the anti-rotation blocks is provided on the inner periphery of the upper part of the adjusting seat; and a ceramic sleeve 364 for providing wear resistance is provided on the inner periphery of the upper part of the water nozzle seat.

[0081] In another embodiment, the measuring instrument 9 includes:

[0082] The second control module 910 is located at the upper end of the measuring and adjusting instrument and is used to electrically connect with the ground controller for simultaneous measurement and adjustment and to monitor downhole flow, pressure and temperature data.

[0083] The motor module 920 is located in the upper middle part of the measuring and adjusting instrument and is electrically connected to the second control module for outputting rotational power;

[0084] A pair of positioning arms 930 are rotatably disposed in the lower middle part of the measuring and adjusting instrument 9, and are used to cooperate with the positioning step 321 after opening;

[0085] A pair of adjusting arms 940 are telescopically mounted on the lower part of the measuring and adjusting instrument 9 and connected to the motor module 920, for cooperating with the adjusting groove 344 to drive the central cylinder 340 to rotate.

[0086] In another embodiment, the steel pipe cable 7 is connected and sealed to the cable sealing tool 2 via NPT threads and Swagelok buckles.

[0087] In another embodiment, it also includes:

[0088] A fixed pulley 14 is installed above the wellhead to support the steel wire cable 11.

[0089] Example 1

[0090] A control method for a dual-control intelligent measurement and adjustment water injection process system as described in any one of the above claims, characterized by comprising the following steps:

[0091] a. Multiple dual-control intelligent water distributors 3 use orifice plate flowmeters 382 to collect downhole flow, pressure, and temperature data for the layer in which they are located;

[0092] b. The orifice plate flowmeter 382 transmits the collected downhole flow, pressure, and temperature data to the cabled explosion-proof ground controller 8 via steel pipe cable 7.

[0093] c. The cable-operated explosion-proof ground controller 8 reads the downhole flow rate, pressure, and temperature data, and sends instructions through the steel pipe cable 7. The first control module 372 instructs the motor 371 to output rotational power, which drives the bushing 374 to rise and fall, thereby adjusting the opening and closing degree of the water outlet 314, and thus realizing direct reading of the water injection parameters of each layer of the downhole from the ground and online adjustment of the water injection volume of each layer.

[0094] Example 2

[0095] A control method for a dual-control intelligent measurement and adjustment water injection process system as described in any one of the above claims, characterized by comprising the following steps:

[0096] S1. Start the ground winch 10 and lower the measuring and adjusting instrument 9 into the downhole injection string through the steel wire cable 11, so that the measuring and adjusting instrument 9 can be selectively matched with multiple dual-control intelligent water distributors 3.

[0097] S2. The measuring and adjusting instrument 9 measures the downhole flow rate, pressure, and temperature data of the layer where the dual-control intelligent water distributor 3 is located, and transmits the downhole flow rate, pressure, and temperature data to the ground controller 13 for simultaneous measurement and adjustment via steel wire cable 11.

[0098] S3. The ground controller 13, which measures and adjusts simultaneously, reads the downhole flow rate, pressure, and temperature data. It then sends a command to the second control module 910 via the steel wire cable 11. The second control module 910 instructs the motor module 920 to rotate. The measuring and adjusting instrument 9 drives the central cylinder 340 to rotate via the adjusting arm 940. The central cylinder 340 drives the adjusting seat 350 to rotate via the first gear structure 342 at the bottom. The adjusting seat 350 drives the water nozzle seat 360 to rise and fall, thereby adjusting the opening of the outlet 314 of the dual-control intelligent water distributor 3. This enables direct reading of the water injection parameters of each layer of the well from the ground and online adjustment of the water injection volume of each layer.

[0099] Example 3

[0100] Preferably, when a bushing 374 of a dual-control intelligent water distributor 3 experiences a jamming fault, the remaining normal dual-control intelligent water distributors 3 are controlled via a cable-operated explosion-proof ground controller 8 and a steel pipe cable 7; then the ground winch 10 is activated, and the measuring and adjusting instrument 9 is lowered into the well injection string via a steel wire cable 11, so that the measuring and adjusting instrument 9 cooperates with the faulty dual-control intelligent water distributor, the positioning arm 930 abuts against the positioning step 321, and the adjusting arm 940 of the measuring and adjusting instrument 9 is inserted into the adjusting groove 344. The ground controller 13, which measures and adjusts simultaneously, issues a command through the second control module 910 to cause the motor module 920 to output rotational power, and the measuring and adjusting instrument 9 drives the central cylinder to rotate. The first gear structure 342 and the second gear structure 351 at the lower end of the central cylinder 340 mesh, driving the adjusting seat 350 to rotate. The water nozzle seat 360 is axially raised and lowered under the action of the adjusting seat 350, thereby controlling the opening and closing degree of the water outlet 314.

[0101] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A dual-control intelligent measurement and adjustment water injection process system, characterized in that, include: The downhole injection string includes tubing connected from top to bottom, multiple spaced cable sealing tools and dual-control intelligent water distributors, and a round plug at the end; each cable sealing tool is equipped with a mechanically fitted downhole packer on its outer periphery, and adjacent downhole packers are connected by a blind screen tube; the blind screen tube is located on the outer periphery of the dual-control intelligent water distributor and corresponds one-to-one with the dual-control intelligent water distributor; The steel pipe cable passes through multiple cable sealing tools from top to bottom and is electrically connected to multiple dual-control intelligent water distributors respectively; the upper end of the steel pipe cable is electrically connected to the cable explosion-proof ground controller. The measurement and adjustment instrument is lowered into the downhole injection string by a surface winch via a steel wire cable; the measurement and adjustment instrument can be selectively used with multiple dual-control intelligent water distributors; the end of the steel wire cable is electrically connected to the ground controller for simultaneous measurement and adjustment via a surface cable; the measurement and adjustment instrument is used to monitor downhole flow rate, pressure, and temperature data, and transmit the downhole flow rate, pressure, and temperature data to the ground controller for simultaneous measurement and adjustment. The opening of the outlet of the dual-control intelligent water distributor can be adjusted by dual control. It is also equipped with an orifice plate flow meter for detecting downhole flow, pressure and temperature data. The orifice plate flow meter is electrically connected to the cable explosion-proof ground controller and is used to return the downhole flow, pressure and temperature data to the cable explosion-proof ground controller. The dual-control intelligent water distributor includes: The outer casing has an upper connector and a lower connector connected to its upper and lower ends, respectively; an axial through hole is provided in the center of the outer casing; a positioning step is provided on the inner circumference of the middle part of the upper connector for cooperating with the positioning arm in the middle of the measuring and adjusting instrument; a first circumferential step and a second circumferential step are provided on the inner and outer circumferences of the lower end of the upper connector, respectively. A central cylinder is disposed within the through hole, and the outer circumference of the central cylinder is adapted to the inner circumference of the through hole; a through central hole is provided at the center of the central cylinder; a first ring extending outward is provided on the upper outer circumference of the central cylinder; the upper and lower end faces of the first ring are smooth planes, and the upper and lower end faces of the first ring abut against the upper connector and the upper end of the outer shell, respectively; a first gear structure is provided on the lower outer circumference of the central cylinder; the central cylinder is used to rotate under the drive of the measuring and adjusting instrument; The first preload spring and the second preload spring are respectively disposed on the first circumferential step and the second circumferential step. The upper ends of the first preload spring and the second preload spring abut against the upper connector; the lower ends of the first preload spring and the second preload spring abut against the first ring. An annular groove is provided on the inner circumference of the upper part of the outer shell, which cooperates with the central cylinder to form a cavity; A pair of first crescent-shaped through holes, a pair of second crescent-shaped through holes, and a pair of third crescent-shaped through holes are respectively mirror-image through holes on the upper wall of the positioning step, the first ring, and the annular slot, and communicate with the cavity; the arc of the first crescent-shaped through holes, the second crescent-shaped through holes, and the third crescent-shaped through holes is 100°~120°. A pair of adjustment slots are radially disposed on the upper part of the central cylinder and communicate with the cavity; the adjustment slots are used to cooperate with the elastic arm at the lower part of the measuring and adjusting instrument; A pair of flow channels are radially disposed in the middle of the central cylinder and communicate with the cavity; A first mounting hole is provided in the middle of the housing, located below the cavity, and communicates with the cavity; The water outlet is radially disposed on the outer casing and communicates with the first mounting hole; The mounting groove is disposed on the lower inner periphery of the housing, located below the first mounting hole, and communicates with the first mounting hole; The second mounting hole is provided in the lower part of the housing, located below the mounting groove, and communicates with the mounting groove; An adjusting seat is disposed in the mounting groove. A second gear structure is provided on the outer periphery of the adjusting seat, and the second gear structure meshes with the first gear structure. A first inner hole is provided at the center of the adjusting seat, and an internal thread is provided on the inner periphery of the first inner hole. A water nozzle seat, at least partially disposed within the first inner hole of the adjusting seat, has a second ring extending outward at its lower part, and the second ring has an external thread adapted to the internal thread; a flow hole is radially provided on the side wall of the water nozzle seat; the water nozzle seat is used to axially move up and down under the drive of the adjusting seat, thereby controlling the opening and closing degree of the water outlet; A motor is installed in the second mounting hole, and a first control module is provided at the lower end of the motor. The output shaft of the motor is connected to a transmission rod, which is inserted into the water nozzle seat. A bushing is provided at the upper end of the transmission rod. The motor is used to drive the bushing to rise and fall, thereby controlling the opening and closing degree of the water outlet. A retaining ring is threaded onto the upper part of the first mounting hole; An orifice plate flow meter is installed above the first mounting hole and above the fixing ring, and is used to detect downhole flow, pressure and temperature.

2. The dual-control intelligent measurement and adjustment water injection process system according to claim 1, characterized in that: The upper connector and the lower connector are respectively provided with a first through hole and a second through hole for axial wire passage.

3. The dual-control intelligent measurement and adjustment water injection process system according to claim 1, characterized in that: A pair of anti-rotation blocks are provided on the outer periphery of the middle part of the water nozzle seat; a limiting groove adapted to the anti-rotation blocks is provided on the inner periphery of the upper part of the adjusting seat; and a ceramic sleeve for providing wear resistance is provided on the inner periphery of the upper part of the water nozzle seat.

4. The dual-control intelligent measurement and adjustment water injection process system according to claim 1, characterized in that: The measuring and adjusting instruments include: The second control module is located at the upper end of the measuring and adjusting instrument and is used to electrically connect with the ground controller for simultaneous measuring and adjusting, and to monitor downhole flow, pressure and temperature data. The motor module is located in the upper middle part of the measuring and adjusting instrument and is electrically connected to the second control module for outputting rotational power; A pair of positioning arms, rotatably mounted on the lower middle part of the measuring and adjusting instrument, are used to engage with the positioning steps after opening; A pair of adjusting arms, which are telescopically mounted on the lower part of the measuring and adjusting instrument and connected to the motor module, are used to cooperate with the adjusting groove to drive the central cylinder to rotate.

5. The dual-control intelligent measurement and adjustment water injection process system according to claim 1, characterized in that: The steel pipe cable is connected and sealed to the cable sealing tool via NPT threads and Swagelok buckles.

6. The dual-control intelligent measurement and adjustment water injection process system according to claim 1, characterized in that: Also includes: A fixed pulley, located above the wellhead, is used to support the steel wire cable.

7. A method of using the dual-control intelligent measurement and adjustment water injection process system according to any one of claims 1-6, characterized in that... Includes the following steps: a. Multiple dual-control intelligent water distributors use orifice plate flow meters to collect downhole flow, pressure, and temperature data for their respective layers; b. The orifice plate flowmeter transmits the collected downhole flow, pressure, and temperature data to the cabled explosion-proof ground controller via steel pipe cables. c. The cable-operated explosion-proof ground controller reads the downhole flow rate, pressure, and temperature data, and sends commands through steel pipe cables to adjust the outlet opening of multiple dual-control intelligent water distributors, thereby realizing direct reading of water injection parameters of each layer of the well from the ground and online adjustment of the water injection volume of each layer.

8. A method of using the dual-control intelligent measurement and adjustment water injection process system according to any one of claims 1-6, characterized in that... Includes the following steps: S1. Start the ground winch and lower the measuring and adjusting instrument into the downhole injection string through the steel wire cable, so that the measuring and adjusting instrument can be selectively matched with multiple dual-control intelligent water distributors. S2. The measuring and adjusting instrument measures the downhole flow rate, pressure, and temperature data of the layer where the dual-control intelligent water distributor is located, and transmits the downhole flow rate, pressure, and temperature data to the ground controller for simultaneous measurement and adjustment via steel wire cable; S3. The ground controller that measures and adjusts simultaneously reads the downhole flow rate, pressure, and temperature data. It then sends commands via steel wire cable to adjust the outlet opening of the dual-control intelligent water distributor that works in conjunction with the measuring and adjusting instruments, thereby enabling direct reading of the water injection parameters of each layer downhole from the ground and online adjustment of the water injection volume of each layer.

9. The method of using the dual-control intelligent measurement and adjustment water injection process system according to claim 7 or 8, characterized in that: When a bushing of a dual-control intelligent water distributor malfunctions due to jamming, the remaining normal dual-control intelligent water distributors are controlled via a cable-operated explosion-proof ground controller and steel pipe cable. The ground winch is then activated, and the measuring and adjusting instrument is lowered into the downhole injection string via a steel wire cable, allowing the instrument to engage with the malfunctioning dual-control intelligent water distributor. The adjusting arm of the measuring and adjusting instrument is inserted into the adjusting groove. The ground controller, through its second control module, sends a command to the motor module to output rotational power. The measuring and adjusting instrument drives the central cylinder to rotate. The first and second gear structures at the lower end of the central cylinder mesh, causing the adjusting seat to rotate. The water nozzle seat rises and falls axially under the influence of the adjusting seat, thereby controlling the opening and closing degree of the water outlet.

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