Double-control intelligent testing and regulating water injection process system and use method thereof

Abstract

The invention discloses a double-control intelligent testing and regulating water injection process system and a control method thereof. Comprising an oil pipe, a plurality of cable passing sealing tools, a double-control intelligent water distributor and a round plug which are sequentially connected from top to bottom, and the cable passing sealing tools and the double-control intelligent water distributor are arranged at intervals; the periphery of each cable-passing sealing tool is provided with an underground packer which is mechanically matched with the cable-passing sealing tool, and the screen blind pipe is located on the periphery of the double-control intelligent water distributor. The steel pipe cable sequentially penetrates through the plurality of cable passing sealing tools from top to bottom and is electrically connected with the plurality of double-control intelligent water distributors respectively; the upper end of the steel pipe cable is electrically connected with the cable explosion-proof ground controller; the measuring and adjusting instrument is lowered into the underground separate injection tubular column by a ground winch through a steel wire cable; the measuring and adjusting instrument is selectively matched with the double-control intelligent water distributors; and the steel wire cable is electrically connected with a measuring and adjusting ground controller. The device has the beneficial effects that the cable explosion-proof ground controller and the ground controller capable of measuring and adjusting water can respectively measure and adjust water injection.

Description

Technical Field

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

[0002] The offshore oilfield stratified water injection technology has experienced more than 20 years of development, and has gradually formed four main water injection technology technologies: hollow inheritance, measurement and adjustment, pre-set cable and cable-free water injection. It has achieved fine stratification, efficient measurement and adjustment, precise injection and intelligent management and control of Bohai Oilfield water injection wells, meeting the needs of oilfields to enhance water drive, tap potential oil layers and increase oilfield production, but all use a single measurement and control method.

[0003] However, with the promotion of on-site application of the technology, the water injection technology in Bohai Oilfield has gradually highlighted the shortcomings of a single measurement and control method. The downhole operation environment of the water injection well is complex, and the measurement and adjustment tools are placed underground for a long time. Especially in the ultra-high temperature and high pressure environment, they are easily affected by the complex downhole environment, resulting in measurement and adjustment function failures and reduced stability, resulting in a short service life of the process string. It is necessary to lift the string and replace the downhole tools, which affects normal production and causes additional operating costs. Therefore, in order to improve the reliability of the process and ensure the continuous high and stable production of the oilfield, in view of the problem that the existing intelligent injection process has a single measurement and control method and can only restore the process string measurement and control function by moving the string when the tool fails, an innovative dual-control intelligent measurement and adjustment water injection process system is proposed to make up for the shortcomings of the offshore oilfield water injection measurement and control technology and provide strong technical support for oilfield exploitation. Summary of the invention

[0004] The purpose of the present invention is to provide a dual-control intelligent measurement and adjustment water injection process system, which can measure and adjust water injection respectively through a cable explosion-proof ground controller and a measurement and adjustment ground controller, and the two measurement and adjustment methods do not interfere with each other; extend the life of the process pipe string, reduce the risk of moving the pipe string, and provide strong technical support for increasing production and injection.

[0005] The purpose of the present 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 respectively through a cable explosion-proof ground controller or a measurement and adjustment ground controller, and the two measurement and adjustment methods do not interfere with each other; extend the life of the process pipe string, reduce the risk of moving the pipe string, and provide strong technical support for increasing production and injection.

[0006] To achieve the above object, the present invention adopts the following technical solutions, including:

[0007] A downhole injection string, comprising an oil pipe connected in sequence from top to bottom, a plurality of cable sealing tools and a dual-control intelligent water distributor arranged at intervals, and a round plug arranged at the end; a mechanically matched downhole packer is arranged on the periphery of each cable sealing tool, and adjacent downhole packers are connected through a screen blind pipe; the screen blind pipe is located on the periphery of the dual-control intelligent water distributor and corresponds to the dual-control intelligent water distributor one by one;

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

[0009] The measuring and adjusting instrument is lowered into the underground injection string by the ground winch through the steel cable; the measuring and adjusting instrument can be optionally matched with multiple dual-control intelligent water distributors; the end of the steel cable is electrically connected to the ground controller for simultaneous measurement and adjustment through the ground cable; the measuring and adjusting instrument is used to monitor the underground flow, pressure and temperature data, and transmit the underground flow, pressure and temperature data to the ground controller for simultaneous measurement and adjustment;

[0010] Among them, the opening of the water outlet of the dual-control intelligent water distributor can be dual-controlled and adjusted, and an orifice flowmeter for detecting downhole flow, pressure and temperature data is also provided. The orifice flowmeter is electrically connected to the cable-proof explosion-proof ground controller and is used to return the downhole flow, pressure and temperature data to the cable-proof explosion-proof ground controller.

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

[0012] The housing has an upper joint and a lower joint connected to its upper and lower ends respectively; an axial through hole is provided at the center of the housing; a positioning step for matching with the positioning arm in the middle of the measuring and adjusting instrument is provided at the inner circumference of the middle part of the upper joint; a first circumferential step and a second circumferential step are provided at the inner circumference and outer circumference of the lower end of the upper joint respectively;

[0013] A center tube is arranged in the through hole, and the outer circumference of the center tube is matched with the inner circumference of the through hole; a through center hole is arranged in the center of the center tube; a first circular ring extending outward is arranged on the outer circumference of the upper part of the center tube; the upper end face and the lower end face of the first circular ring are smooth planes, and the upper end face and the lower end face of the first circular ring are respectively in contact with the upper joint and the upper end of the shell; a first gear structure is arranged on the outer circumference of the lower end of the center tube; the center tube is used to rotate under the drive of the measuring and adjusting instrument;

[0014] A first preload spring and a second preload spring, which are respectively arranged 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 joint; the lower ends of the first preload spring and the second preload spring abut against the first circular ring;

[0015] An annular groove is arranged on the inner periphery of the upper middle portion of the shell and cooperates with the central tube 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-imaged and penetrated through the upper wall of the positioning step, the first circular ring and the annular groove, and are connected with the cavity; the arcs of the first crescent-shaped through holes, the second crescent-shaped through holes and the third crescent-shaped through holes are 100° to 120°;

[0017] A pair of adjustment grooves, which are radially arranged on the upper part of the central tube and communicated with the cavity; the adjustment grooves are used to cooperate with the elastic arms at the lower part of the measuring and adjusting instrument;

[0018] A pair of flow grooves, which are radially arranged in the middle of the central tube and communicated with the cavity;

[0019] A first mounting hole, which is arranged in the middle of the housing, below the cavity and communicated with the cavity;

[0020] a water outlet, which is radially arranged on the housing and communicated with the first mounting hole;

[0021] A mounting groove, which is arranged on the inner periphery of the lower middle portion of the housing, is located below the first mounting hole, and is communicated with the first mounting hole;

[0022] A second mounting hole, which is arranged at the lower part of the housing, is located below the mounting slot and is communicated with the mounting slot;

[0023] An adjustment seat is arranged in the installation groove, a second gear tooth structure is arranged on the outer periphery of the adjustment seat, and the second gear tooth structure is meshed with the first gear tooth structure; a first inner hole is arranged at the center of the adjustment seat, and an internal thread is arranged on the inner periphery of the first inner hole;

[0024] A faucet seat, which is at least partially arranged in the first inner hole of the adjustment seat, a second ring extending outward is arranged at the lower part of the faucet seat, and the second ring is provided with an external thread matching the internal thread; a flow hole is radially arranged on the side wall of the faucet seat; the faucet seat is used to axially rise and fall under the drive of the adjustment seat, thereby controlling the opening and closing degree of the water outlet;

[0025] A motor is arranged in the second mounting hole, and a first control module is arranged at the lower end of the motor; an output shaft of the motor is connected to a transmission rod, and the transmission rod is inserted into the faucet seat, and a shaft sleeve is arranged at the upper end of the transmission rod, and the motor is used to drive the shaft sleeve to rise and fall, thereby controlling the opening and closing degree of the water outlet;

[0026] A fixing ring, which is threadedly arranged on the upper portion of the first mounting hole;

[0027] The orifice flow meter is arranged on the upper part of the first mounting hole and located above the fixing ring, and is used to detect downhole flow, pressure and temperature.

[0028] Preferably, a first axial wire passing through hole and a second wire passing through hole are respectively provided on the upper joint and the lower joint.

[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 matched with the anti-rotation blocks is provided on the inner periphery of the upper part of the adjustment 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 comprises:

[0031] A second control module is arranged at the upper end of the measuring and adjusting instrument, and is used to be electrically connected to the measuring and adjusting ground controller and monitor the downhole flow, pressure and temperature data;

[0032] A motor module, which is arranged in the middle and upper part of the measuring and adjusting instrument and is electrically connected to the second control module and is used to output rotational power;

[0033] A pair of positioning arms, which are rotatably arranged at the middle and lower part of the measuring and adjusting instrument and are used to cooperate with the positioning steps after being opened;

[0034] A pair of adjustment arms are telescopically arranged at the lower part of the measuring and adjusting instrument and connected to the motor module, and are used to cooperate with the adjustment slot to drive the central tube to rotate.

[0035] Preferably, the steel tube cable and the cable sealing tool are connected and sealed via NPT threads and Swagelok buckles.

[0036] Preferably, it also includes:

[0037] A fixed pulley is arranged above the wellhead and is used for supporting the steel cable.

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

[0039] a. Orifice flowmeters in multiple dual-control intelligent water distributors collect downhole flow, pressure, and temperature data of the layer;

[0040] b. The orifice flowmeter transmits the collected downhole flow, pressure and temperature data to the cable-proof explosion-proof ground controller through the steel pipe cable;

[0041] c. A cable-proof explosion-proof ground controller reads the underground flow, pressure, and temperature data, and sends instructions through steel pipe cables to adjust the outlet openings of multiple dual-control intelligent water distributors, thereby directly reading the injection parameters of each layer underground and adjusting the injection volume of each layer online.

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

[0043] S1. Turn on the surface winch and lower the measuring and adjusting instrument into the downhole injection string through the steel 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, pressure and temperature data of the layer where the dual-control intelligent water distributor is located, and transmits the downhole flow, pressure and temperature data to the ground controller through the steel cable for simultaneous measurement and adjustment;

[0045] S3. The ground controller reads the downhole flow, pressure and temperature data while measuring and adjusting, and sends instructions through the steel cable to adjust the outlet opening of the dual-control intelligent water distributor that cooperates with the measuring and adjusting instrument, thereby realizing direct reading of the injection parameters of each layer in the well and online adjustment of the injection volume of each layer.

[0046] Preferably, when a sleeve of a dual-control intelligent water distributor is stuck, the remaining normal dual-control intelligent water distributors are controlled by a cable-proof explosion-proof ground controller and a steel pipe cable; then the ground winch is turned on, and the measuring and adjusting instrument is lowered into the downhole injection string through a steel cable, so that the measuring and adjusting instrument cooperates with the faulty dual-control intelligent water distributor; the adjusting arm of the measuring and adjusting instrument is inserted into the adjusting slot, and the measuring and adjusting ground controller sends a command through the second control module to make the motor module output rotational power, and the measuring and adjusting instrument drives the center tube to rotate, and the first gear structure at the lower end of the center tube meshes with the second gear structure, driving the adjustment seat to rotate, and the faucet seat is driven by the adjustment seat to rise and fall axially, thereby controlling the opening and closing degree of the water outlet.

[0047] The beneficial effects of the present invention are as follows: the ground can measure and adjust water injection respectively through a cable explosion-proof ground controller and a ground controller that measures and adjusts simultaneously, and the two measurement and adjustment methods do not interfere with each other; the service life of the process string is extended, the risk of moving the string is reduced, and strong technical support is provided for increasing production and injection. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0049] Figure 2 Schematic diagram of the dual-control intelligent water distributor of the present invention (water outlet closed state).

[0050] Figure 3 It is a schematic diagram of the dual-control intelligent water distributor in the present invention (the water outlet opening is controlled by the shaft sleeve).

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

[0052] Figure 5 It is a schematic diagram of the faucet seat in the present invention.

[0053] Figure 6 Schematic diagram of the motor in the present invention.

[0054] Figure 7 It is a schematic diagram of the measuring and adjusting instrument in the present invention. DETAILED DESCRIPTION

[0055] The invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.

[0056] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or 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 comprises:

[0058] A downhole injection string comprises an oil pipe 1 connected in sequence from top to bottom, a plurality of cable sealing tools 2 and a dual-control intelligent water distributor 3 arranged at intervals, and a round plug 4 arranged at the end; a mechanically matched downhole packer 5 is respectively arranged on the periphery of each cable sealing tool 2, and adjacent downhole packers are connected by a screen blind pipe 6; the screen blind pipe 6 is located on the periphery of the dual-control intelligent water distributor 3 and corresponds to the dual-control intelligent water distributor 3 one by one;

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

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

[0061] Among them, the opening of the water outlet of the dual-control intelligent water distributor 3 can be dual-controlled and adjusted, and an orifice flowmeter 382 for detecting downhole flow, pressure, and temperature data is also provided. The orifice flowmeter 381 is electrically connected to the cable-proof explosion-proof ground controller 8, and is used to return the downhole flow, pressure, and temperature data to the cable-proof explosion-proof ground controller 8.

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

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

[0064] The center tube 340 is arranged in the through hole, and the outer circumference of the center tube 340 is matched with the inner circumference of the through hole; a through center hole is arranged in the center of the center tube 340; a first circular ring 341 extending outward is arranged on the outer circumference of the upper part of the center tube 340; the upper end face and the lower end face of the first circular ring 341 are smooth planes respectively, and the upper end face and the lower end face of the first circular ring 341 are respectively in contact with the upper joint 320 and the upper end of the housing 310; a first gear structure 342 is arranged on the outer circumference of the lower end of the center tube 340; the center tube 340 is used to rotate under the drive of the measuring and adjusting instrument 9;

[0065] A first preload spring 324 and a second preload spring 325 are respectively arranged on the first circumferential step 322 and the second circumferential step 323, and the upper ends of the first preload spring 324 and the second preload spring 325 abut against the upper joint 320; the lower ends of the first preload spring 324 and the second preload spring 325 abut against the first circular ring 341;

[0066] An annular groove 311 is arranged on the inner periphery of the upper middle portion of the housing and cooperates with the central tube 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-imaged and penetrated through the upper wall of the positioning step 321, the first circular ring 341 and the annular groove 311, and are connected with the cavity; the arcs of the first crescent-shaped through holes 326, the second crescent-shaped through holes 343 and the third crescent-shaped through holes 312 are 100° to 120°;

[0068] A pair of adjustment grooves 344 are radially arranged at the upper part of the central tube 340 and communicated with the cavity; the adjustment grooves 344 are used to cooperate with the elastic arms 940 at the lower part of the measuring and adjusting instrument 9;

[0069] A pair of flow grooves 345, which are radially arranged in the middle of the central tube 340 and communicate with the cavity;

[0070] A first mounting hole 313, which is disposed in the middle of the housing, below the cavity and communicated with the cavity;

[0071] a water outlet 314, which is radially arranged on the housing and communicates with the first mounting hole;

[0072] A mounting groove 315, which is arranged on the inner periphery of the lower middle portion of the housing, is located below the first mounting hole, and is in communication with the first mounting hole;

[0073] A second mounting hole 316, which is disposed at the lower portion of the housing, below the mounting slot, and communicated with the mounting slot;

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

[0075] The faucet seat 360 is at least partially disposed in the first inner hole of the adjusting seat 350. The lower part of the faucet seat 360 is provided with a second ring 361 extending outward, and the second ring is provided with an external thread matching the internal thread; a flow hole 362 is radially provided on the side wall of the faucet seat 360; the faucet seat 360 is used to axially rise and fall under the drive of the adjusting seat, thereby controlling the opening and closing degree of the water outlet;

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

[0077] A fixing ring 381, which is threadedly arranged on the upper portion of the first mounting hole 313;

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

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

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

[0081] In another embodiment, the measuring and adjusting instrument 9 comprises:

[0082] A second control module 910, which is disposed at the upper end of the measuring and adjusting instrument, is used to be electrically connected to the measuring and adjusting ground controller and monitor the downhole flow, pressure, and temperature data;

[0083] A motor module 920, which is disposed in the middle and upper part of the measuring and adjusting instrument and is electrically connected to the second control module and is used to output rotational power;

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

[0085] A pair of adjustment arms 940 are telescopically disposed at the lower portion of the measuring and adjusting instrument 9 and connected to the motor module 920 , and are used to cooperate with the adjustment slots 344 to drive the central tube 340 to rotate.

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

[0087] In another embodiment, further comprising:

[0088] The fixed pulley 14 is arranged above the wellhead and is used to support the steel cable 11 .

[0089] Example 1

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

[0091] a. Orifice flowmeters 382 in multiple dual-control intelligent water distributors 3 collect downhole flow, pressure, and temperature data of the layer;

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

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

[0094] Example 2

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

[0096] S1, start the surface winch 10, and lower the measuring and adjusting instrument 9 into the downhole injection string through the steel 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, pressure and temperature data of the layer where the dual-control intelligent water distributor 3 is located, and transmits the downhole flow, pressure and temperature data to the ground controller 13 through the steel cable 11 while measuring and adjusting;

[0098] S3. The measuring and adjusting ground controller 13 reads the downhole flow, pressure and temperature data, and sends instructions to the second control module 910 through the steel cable 11. The second control module 910 instructs the motor module 920 to output rotation. The measuring and adjusting instrument 9 drives the central tube 340 to rotate through the adjusting arm 940. The central tube 340 drives the adjusting seat 350 to rotate through the first gear structure 342 at the bottom. The adjusting seat 350 drives the faucet seat 360 to rise and fall, thereby adjusting the opening of the water outlet 314 of the dual-control intelligent water distributor 3, thereby realizing direct reading of the water injection parameters of each layer in the well on the ground and online adjustment of the water injection amount of each layer.

[0099] Example 3

[0100] Preferably, when the sleeve 374 of a dual-control intelligent water distributor 3 is stuck, the remaining normal dual-control intelligent water distributors 3 are controlled by the cable-proof explosion-proof ground controller 8 and the steel pipe cable 7; then the ground winch 10 is turned on, and the measuring and adjusting instrument 9 is lowered into the downhole injection string through the 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 adjustment arm 940 of the measuring and adjusting instrument 9 is inserted into the adjustment groove 344. The measuring and adjusting ground controller 13 sends an instruction through the second control module 910 to make the motor module 920 output rotational power, and the measuring and adjusting instrument 9 drives the central tube to rotate, and the first gear structure 342 at the lower end of the central tube 340 is meshed with the second gear structure 351, driving the adjustment seat 350 to rotate, and the faucet seat 360 is axially lifted and lowered under the drive of the adjustment seat 350, thereby controlling the opening and closing degree of the water outlet 314.

[0101] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A dual-control intelligent measurement and adjustment water injection process system, characterized in that: include: A downhole injection string, comprising an oil pipe connected in sequence from top to bottom, a plurality of cable sealing tools and a dual-control intelligent water distributor arranged at intervals, and a round plug arranged at the end; a mechanically matched downhole packer is arranged on the periphery of each cable sealing tool, and adjacent downhole packers are connected through a screen blind pipe; the screen blind pipe is located on the periphery of the dual-control intelligent water distributor and corresponds to the dual-control intelligent water distributor one by one; The steel pipe cable passes through a plurality of cable sealing tools from top to bottom in sequence and is electrically connected to a plurality of dual-control intelligent water distributors respectively; the upper end of the steel pipe cable is electrically connected to a cable-proof explosion-proof ground controller; The measuring and adjusting instrument is lowered into the underground injection string by the ground winch through the steel cable; the measuring and adjusting instrument can be optionally matched with multiple dual-control intelligent water distributors; the end of the steel cable is electrically connected to the ground controller for simultaneous measurement and adjustment through the ground cable; the measuring and adjusting instrument is used to monitor the underground flow, pressure and temperature data, and transmit the underground flow, pressure and temperature data to the ground controller for simultaneous measurement and adjustment; Among them, the opening of the water outlet of the dual-control intelligent water distributor can be dual-controlled and adjusted, and an orifice flowmeter for detecting downhole flow, pressure and temperature data is also provided. The orifice flowmeter is electrically connected to the cable-proof explosion-proof ground controller and is used to return the downhole flow, pressure and temperature data to the cable-proof explosion-proof ground controller.

2. The dual-control intelligent measurement and adjustment water injection process system according to claim 1 is characterized in that: The dual-control intelligent water distributor comprises: The housing has an upper joint and a lower joint connected to its upper and lower ends respectively; an axial through hole is provided at the center of the housing; a positioning step for matching with the positioning arm in the middle of the measuring and adjusting instrument is provided at the inner circumference of the middle part of the upper joint; a first circumferential step and a second circumferential step are provided at the inner circumference and outer circumference of the lower end of the upper joint respectively; A center tube is arranged in the through hole, and the outer circumference of the center tube is matched with the inner circumference of the through hole; a through center hole is arranged in the center of the center tube; a first circular ring extending outward is arranged on the outer circumference of the upper part of the center tube; the upper end face and the lower end face of the first circular ring are smooth planes, and the upper end face and the lower end face of the first circular ring are respectively in contact with the upper joint and the upper end of the shell; a first gear structure is arranged on the outer circumference of the lower end of the center tube; the center tube is used to rotate under the drive of the measuring and adjusting instrument; A first preload spring and a second preload spring, which are respectively arranged 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 joint; the lower ends of the first preload spring and the second preload spring abut against the first circular ring; An annular groove is arranged on the inner periphery of the upper middle portion of the shell and cooperates with the central tube 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-imaged and penetrated through the upper wall of the positioning step, the first circular ring and the annular groove, and are connected with the cavity; the arcs of the first crescent-shaped through holes, the second crescent-shaped through holes and the third crescent-shaped through holes are 100° to 120°; A pair of adjustment grooves, which are radially arranged on the upper part of the central tube and communicated with the cavity; the adjustment grooves are used to cooperate with the elastic arms at the lower part of the measuring and adjusting instrument; A pair of flow grooves, which are radially arranged in the middle of the central tube and communicated with the cavity; A first mounting hole, which is arranged in the middle of the housing, below the cavity and communicated with the cavity; a water outlet, which is radially arranged on the housing and communicated with the first mounting hole; A mounting groove, which is arranged on the inner periphery of the lower middle portion of the housing, is located below the first mounting hole, and is communicated with the first mounting hole; A second mounting hole, which is arranged at the lower part of the housing, is located below the mounting slot and is communicated with the mounting slot; An adjustment seat is arranged in the installation groove, a second gear tooth structure is arranged on the outer periphery of the adjustment seat, and the second gear tooth structure is meshed with the first gear tooth structure; a first inner hole is arranged at the center of the adjustment seat, and an internal thread is arranged on the inner periphery of the first inner hole; A faucet seat, which is at least partially arranged in the first inner hole of the adjustment seat, a second ring extending outward is arranged at the lower part of the faucet seat, and the second ring is provided with an external thread matching the internal thread; a flow hole is radially arranged on the side wall of the faucet seat; the faucet seat is used to axially rise and fall under the drive of the adjustment seat, thereby controlling the opening and closing degree of the water outlet; A motor is arranged in the second mounting hole, and a first control module is arranged at the lower end of the motor; an output shaft of the motor is connected to a transmission rod, and the transmission rod is inserted into the faucet seat, and a shaft sleeve is arranged at the upper end of the transmission rod, and the motor is used to drive the shaft sleeve to rise and fall, thereby controlling the opening and closing degree of the water outlet; A fixing ring, which is threadedly arranged on the upper portion of the first mounting hole; The orifice flow meter is arranged on the upper part of the first mounting hole and located above the fixing ring, and is used to detect downhole flow, pressure and temperature.

3. The dual-control intelligent measurement and adjustment water injection process system according to claim 2 is characterized in that: A first axial wire passing through hole and a second wire passing through hole are respectively provided on the upper joint and the lower joint.

4. The dual-control intelligent measurement and adjustment water injection process system according to claim 2 is characterized in that: A pair of anti-rotation blocks are arranged on the outer periphery of the middle part of the faucet seat; a limiting groove matched with the anti-rotation blocks is arranged on the inner periphery of the upper part of the adjustment seat; and a ceramic sleeve for providing wear resistance is arranged on the inner periphery of the upper part of the faucet seat.

5. The dual-control intelligent measurement and adjustment water injection process system according to claim 1 is characterized in that: The measuring and adjusting instrument comprises: A second control module is arranged at the upper end of the measuring and adjusting instrument, and is used to be electrically connected to the measuring and adjusting ground controller and monitor the downhole flow, pressure and temperature data; A motor module, which is arranged in the middle and upper part of the measuring and adjusting instrument and is electrically connected to the second control module and is used to output rotational power; A pair of positioning arms, which are rotatably arranged at the middle and lower part of the measuring and adjusting instrument and are used to cooperate with the positioning steps after being opened; A pair of adjustment arms are telescopically arranged at the lower part of the measuring and adjusting instrument and connected to the motor module, and are used to cooperate with the adjustment slot to drive the central tube to rotate.

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

7. The dual-control intelligent measurement and adjustment water injection process system according to claim 1 is characterized in that: Also includes: A fixed pulley is arranged above the wellhead and is used for supporting the steel cable.

8. A control method for the dual-control intelligent measurement and adjustment water injection process system according to any one of claims 1 to 7, characterized in that The following steps are involved: a. Orifice flowmeters in multiple dual-control intelligent water distributors collect downhole flow, pressure, and temperature data of the layer; b. The orifice flowmeter transmits the collected downhole flow, pressure and temperature data to the cable-proof explosion-proof ground controller through the steel pipe cable; c. A cable-proof explosion-proof ground controller reads the underground flow, pressure, and temperature data, and sends instructions through steel pipe cables to adjust the outlet openings of multiple dual-control intelligent water distributors, thereby directly reading the injection parameters of each layer underground and adjusting the injection volume of each layer online.

9. A control method for a dual-control intelligent water injection process system as claimed in any one of claims 1 to 7, characterized in that The following steps are involved: S1. Turn on the surface winch and lower the measuring and adjusting instrument into the downhole injection string through the steel 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, pressure and temperature data of the layer where the dual-control intelligent water distributor is located, and transmits the downhole flow, pressure and temperature data to the ground controller through the steel cable for simultaneous measurement and adjustment; S3. The ground controller reads the downhole flow, pressure and temperature data while measuring and adjusting, and sends instructions through the steel cable to adjust the outlet opening of the dual-control intelligent water distributor that cooperates with the measuring and adjusting instrument, thereby realizing direct reading of the injection parameters of each layer in the well and online adjustment of the injection volume of each layer.

10. The control method of the dual-control intelligent measurement and adjustment water injection process system according to claim 8 or 9, characterized in that: When a sleeve of a dual-control intelligent water distributor is stuck, the remaining normal dual-control intelligent water distributors are controlled by a cable-proof explosion-proof ground controller and a steel pipe cable; then the ground winch is turned on, and the measuring and adjusting instrument is lowered into the downhole injection string through a steel cable, so that the measuring and adjusting instrument cooperates with the faulty dual-control intelligent water distributor; the adjusting arm of the measuring and adjusting instrument is inserted into the adjusting slot, and the measuring and adjusting ground controller sends a command through the second control module to make the motor module output rotational power, and the measuring and adjusting instrument drives the center tube to rotate, and the first gear structure at the lower end of the center tube meshes with the second gear structure, driving the adjusting seat to rotate, and the faucet seat is driven by the adjusting seat to rise and fall axially, thereby controlling the opening and closing degree of the water outlet.

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