Water nozzle permanent underground casting and fishing wave code separate injection device and process method

Abstract

The invention belongs to the technical field of oil field separated layer water injection processes, and particularly provides a water nozzle permanent down-hole throwing and fishing wave code separated injection device and a process method.The water nozzle permanent down-hole throwing and fishing wave code separated injection device comprises a normally-arranged down-hole tool and a throwing and fishing wave code communication short section; the normally-arranged downhole tool comprises a positioning connector, an oil pipe nipple and a dragging cylinder water distributor. The dragging cylinder water distributor comprises an upper connector, a connecting cylinder, a wireless communication pressure gauge nipple, an anti-rotation connector, a transmission sleeve, a water nozzle assembly and a body connector. The droppable and salvageable wave code communication short section comprises a positioning droppable and salvageable short section, a battery short section, a flowmeter short section, a circuit control short section and a testing and adjusting short section; the problems that an existing underground wave code water distributor is an integrated device, a water nozzle is integrated on the water distributor, when the underground wave code communication intelligent water distributor needs to be fished up, underground water injection is affected, the resistance meeting rate of the device is high, and the service life is short are solved. After the underground wave code communication intelligent water distributor is fished up, underground water injection is not affected, the resistance meeting rate is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of oil field stratified water injection technology, and specifically relates to a wave code injection device and a process method for a water nozzle permanently placed underground and capable of being cast and retrieved. Background Art

[0002] As an important technical means to improve the oil recovery efficiency of oil fields, water injection has undergone many technical updates, including general water injection, eccentric layered water injection, concentric layered water injection, and intelligent downhole water injection. As a technical development branch of intelligent downhole water injection technology, wireless communication water injection technology has been used in oil fields for many years and does have certain advantages in the construction of smart oil fields. Its early construction is simple and the later cost is low, which reduces the number of operators, improves the construction efficiency, and greatly reduces the production operation cost. As one of the most important instruments in the wireless communication water injection process, the wave code communication intelligent water distributor is designed to use the uphole instrument to generate and detect pressure-flow waves and communicate with the downhole instrument in a two-way manner. According to its structural characteristics, it is directly connected in series to the tubing string during use and goes down the well with the tubing. When in use, it sends commands to communicate with the downhole wave code communication intelligent water distributor according to ground needs, controls the downhole wave code communication intelligent water distributor to perform corresponding instrument operations, and communicates with the ground controller as needed to transmit data in reverse. Due to the structural characteristics of the wave code communication intelligent water distributor itself, its actual effective service life and use efficiency are greatly affected.

[0003] The Chinese patent document with publication number CN202222100679.4 discloses a downhole water distribution system based on wave code communication, including a water distributor, a control unit and a host computer, wherein the controller includes a motor sheath and a circuit board sheath; the motor sheath and the circuit board sheath are fixedly connected, a motor is arranged inside the motor sheath, the motor is fixedly connected to the motor sheath, and a control circuit board is arranged inside the circuit board sheath; the output end of the motor is connected to the transmission shaft through a coupling, the transmission shaft is connected to the water distributor, and is used to control the opening of the water nozzle of the water distributor, and an electromagnetic flowmeter is fixedly arranged on the top of the circuit board sheath, and the electromagnetic flowmeter is connected to the host computer through a cable. The document realizes the opening adjustment of the water outlet nozzle of the water distributor by driving the transmission shaft through a motor, and the transmission shaft is clamped with the water nozzle adjustment sleeve to avoid idling of the transmission shaft, and has the advantages of precise water nozzle control and fast response speed. This document is also an integrated device, which does not solve the problem that the water nozzle is integrated on the water distributor. When the underground wave code communication intelligent water distributor needs to be salvaged, it affects the underground water injection. In addition, the integrated device has a high resistance rate, and frequent salvage and delivery affect its service life. Summary of the invention

[0004] The present invention provides a water faucet permanently placed underground and salvageable wave code injection device and process method, the purpose of which is to overcome the problem that the underground wave code communication intelligent water distributor in the prior art is an integrated device, the water faucet is integrated on the water distributor, and when the underground wave code communication intelligent water distributor needs to be salvaged, the underground water injection is affected; and the integrated device has a high resistance rate, and frequent salvage and delivery affect its service life.

[0005] To this end, the present invention provides a water nozzle permanently placed downhole wave code injection device that can be cast and retrieved, including a permanent downhole tool and a cast and retrieved wave code communication short section; the permanent downhole tool includes a positioning joint, a tubing short section and a drag barrel water distributor, the drag barrel water distributor includes an upper joint, a connecting tube, a wireless communication pressure gauge short section, an anti-rotation joint, a transmission sleeve, a water nozzle assembly and a body joint; the cast and retrieved wave code communication short section includes a positioning casting short section, a battery short section, a flow meter short section, a circuit control short section and a measuring and adjusting short section; the positioning joint, the tubing short section, the upper joint, the connecting tube and the body joint are connected in sequence from left to right, and the positioning casting short section is connected in sequence from left to right. The short section, battery section, flow meter section, circuit control section and measuring and adjusting section are connected in sequence from left to right, and the positioning and salvaging section is connected in the positioning joint, the battery section and flow meter section are located in the oil pipe section, the circuit control section and the measuring and adjusting section are located in the towing drum water distributor, a wireless communication pressure gauge section is connected between the circuit control section, the measuring and adjusting section and the connecting tube, the outer side of the right end of the measuring and adjusting section is connected in sequence from left to right to the anti-rotation joint and the transmission sleeve, and the transmission sleeve is connected to the body joint through the faucet assembly; the circuit control section is electrically connected to the battery section, the flow meter section, the measuring and adjusting section and the wireless communication pressure gauge section respectively.

[0006] Preferably, the positioning joint is provided with an oil pipe thread 1, a limiting inclined surface and a positioning step in sequence from left to right along the horizontal central axis.

[0007] Preferably, the wireless communication pressure gauge short section includes a battery short section, a wireless communication module and a pressure sensor, and the battery short section, the wireless communication module and the pressure sensor are electrically connected in sequence from left to right.

[0008] Preferably, an anti-rotation groove is provided on the inner side of the anti-rotation joint.

[0009] Preferably, the faucet assembly comprises a transmission gear, a transmission screw and a faucet valve core, and the transmission gear, the transmission screw and the faucet valve core are connected in sequence from left to right.

[0010] Preferably, the main body joint includes a gear transmission pair, and the transmission sleeve is connected to the transmission gear through the gear transmission pair. The main body joint is provided with an external pressure conducting hole, a water outlet, a water inlet and two oil pipe threads from left to right, and the pressure sensor is connected to the external pressure conducting hole.

[0011] Preferably, the positioning and salvaging short section includes a salvage rod, a limit cam, a positioning cam assembly, a positioning arm and a positioning body. The left end of the positioning body is connected to the salvage rod, the positioning body is connected to the positioning cam assembly, the side of the positioning body is connected to the limit cam and the positioning arm from left to right in sequence, the left end of the positioning arm is connected to the positioning cam assembly, the limit cam and the positioning arm are both located in the positioning step, and the limit cam is connected to the limit inclined surface on the left.

[0012] Preferably, the flow meter nipple includes a flow measurement sensor, a pressure measurement sensor and a temperature measurement sensor, and the flow measurement sensor, the pressure measurement sensor and the temperature measurement sensor are connected in sequence from left to right.

[0013] Preferably, the circuit control short section includes a control circuit board and a wireless module connector, the control circuit board is electrically connected to the flow measurement sensor, the pressure measurement sensor, the temperature measurement sensor and the wireless module connector respectively, and the wireless module connector is wirelessly connected to the wireless communication module.

[0014] A process method for a water nozzle permanently placed underground and castable wave code injection device based on claim 1, comprising the following steps:

[0015] The downhole tool is usually placed at the target location downhole;

[0016] When in use, place the retrievable wave code communication short section into the permanent downhole tool;

[0017] Under normal water injection conditions, the flow meter subsection is used to monitor the water injection flow and pressure fluctuations in the tubing subsection, and to receive command information. The flow meter subsection transmits the monitored and received information to the circuit control subsection; the wireless communication pressure gauge subsection obtains the external pressure data of the drag drum water distributor, and sends the obtained data to the circuit control subsection; the circuit control subsection controls the rotation of the measuring and adjusting subsection according to the received information, thereby enabling the measuring and adjusting subsection to control the water nozzle assembly through the transmission sleeve to adjust the flow;

[0018] After use, the salvageable wave code communication short section is salvaged from the permanent downhole tool.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention provides a permanent downhole water nozzle that can be cast and retrieved wave code injection device and process method. The permanent downhole tool and the cast and retrieved wave code communication short section are separate independent devices. The permanent downhole tool is placed at the target position downhole. When in use, the cast and retrieved wave code communication short section is cast into the permanent downhole tool; after use, the cast and retrieved wave code communication short section is fished out from the permanent downhole tool, and the transmission sleeve is connected to the body joint through the water nozzle assembly; after the water nozzle is permanently placed downhole, when the cast and retrieved wave code communication short section is taken out, the characteristics of the downhole water injection nozzle can be retained, which is of great significance for testing instruments (testing water absorption profiles, etc.) to measure daily water injection volume and water drive oil effect evaluation. The permanent downhole tool and the cast and retrieved wave code communication short section are placed separately, so that the permanent downhole tool and the cast and retrieved wave code communication short section have no sealing relationship, and the gap between the two can be increased, which ensures the function of the instrument (water nozzle permanent downhole cast and retrieved wave code injection device) while greatly reducing the resistance rate of the instrument. At the same time, after the salvageable wave code communication short section is fished out, the underground water absorption characteristics are guaranteed to provide guarantee for the water absorption profile test.

[0021] 2. The water nozzle permanently placed underground and retrievable wave code injection device and process method provided by the present invention has permanent underground tools and retrievable wave code communication short sections placed separately. Compared with the integrated device, the device of the present invention has a simple structure, and the retrievable wave code communication short section is easy to place and salvage, so there is no need to frequently place and salvage the permanently placed underground tools, thereby extending the service life.

[0022] 3. The water nozzle provided by the present invention is a permanently placed underground castable wave code injection device and process method, which adds a wireless communication pressure gauge short section, a battery short section, a flow meter short section, and a circuit control short section, which is convenient for monitoring and collecting data, accurately realizes flow regulation, improves the reliability and applicability of the short section, and can simplify the structure of the communication short section and reduce the resistance rate of the communication short section.

[0023] 4. The water nozzle permanently placed underground and retrieval wave code dispensing device and process method provided by the present invention achieves the purpose of rotating the regulating head (254) in the retrieval wave code communication short section while the retrieval wave code communication short section body does not rotate through the clamping connection of the anti-rotation block and the anti-rotation joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Figure 1 It is a structural diagram of the commonly used downhole tools;

[0026] Figure 2 This is a structural diagram of a short section of a wave code communication that can be cast and salvaged;

[0027] Figure 3 It is the structural diagram of the anti-rotation block and the adjustment block;

[0028] Figure 4It is a structural diagram of the positioning and salvaging short section;

[0029] Figure 5 is a longitudinal cross-sectional view of a downhole tool in a permanent position;

[0030] Figure 6 It is a longitudinal cross-sectional view of a downhole tool connected to a salvageable wave code communication short section;

[0031] Figure 7 It is a structural diagram of the positioning component;

[0032] Description of reference numerals: 1. downhole tool; 11. positioning joint; 12. tubing nipple; 10. drag drum water distributor; 13. upper joint; 14. connecting tube; 15. wireless communication pressure gauge nipple; 16. anti-rotation joint; 17. transmission sleeve; 18. water nozzle assembly; 19. body joint;

[0033] 111. Oil pipe thread 1; 112. Limiting inclined surface; 113. Positioning step;

[0034] 151. Battery short section; 152. Wireless communication module; 153. Pressure sensor;

[0035] 161. Anti-rotation groove;

[0036] 181, transmission gear; 182, transmission screw; 183, faucet valve core;

[0037] 191, gear transmission pair; 192, external pressure guide hole; 193, water outlet; 194, water inlet; 195, oil pipe thread 2;

[0038] 2. Wave code communication short section that can be cast and salvaged; 21. Positioning and salvaging short section; 22. Battery short section; 23. Flow meter short section; 24. Circuit control short section; 25. Measurement and adjustment short section;

[0039] 211. fishing rod; 212. limiting cam; 213. positioning cam assembly; 214. positioning arm; 215. positioning body;

[0040] 231. Flow measurement sensor; 232. Pressure measurement sensor; 233. Temperature measurement sensor;

[0041] 241. control circuit board; 242. wireless module connector;

[0042] 251, motor reducer; 252, transmission shaft; 253, anti-rotation block; 254, adjustment head; 255, adjustment block;

[0043] 2131. Positioning cam; 2132. Cam wrench reset torsion spring; 2133. Cam wrench; 2134. Cam wrench pin; 2135. Cam pin; A. Open arm limit slot; B. Close arm limit slot. DETAILED DESCRIPTION

[0044] Embodiment 1:

[0045] like Figure 1 , 2 , 5 and 6, a water nozzle permanently placed downhole wave code dispensing device that can be cast and retrieved comprises a permanent downhole tool 1 and a cast and retrieved wave code communication short section 2; the permanent downhole tool 1 comprises a positioning joint 11, a tubing short section 12 and a drag tube water distributor 10, the drag tube water distributor 10 comprises an upper joint 13, a connecting tube 14, a wireless communication pressure gauge short section 15, an anti-rotation joint 16, a transmission sleeve 17, a water nozzle assembly 18 and a body joint 19; the cast and retrieved wave code communication short section 2 comprises a positioning casting short section 21, a battery short section 22, a flow meter short section 23, a circuit control short section 24 and a measuring and adjusting short section 25; the positioning joint 11, the tubing short section 12, the upper joint 13, the connecting tube 14 and the body joint 19 are connected in sequence from left to right, the positioning casting short section 21, the battery short section 22, the flow meter short section 23, the circuit control short section 24 and the measuring and adjusting short section 25. The short section 22, the flow meter short section 23, the circuit control short section 24 and the measuring and adjusting short section 25 are connected in sequence from left to right, and the positioning and salvaging short section 21 is connected to the positioning joint 11, the battery short section 22 and the flow meter short section 23 are located in the oil pipe short section 12, the circuit control short section 24 and the measuring and adjusting short section 25 are located in the towing drum water distributor 10, the wireless communication pressure gauge short section 15 is connected between the circuit control short section 24, the measuring and adjusting short section 25 and the connecting tube 14, the outer side of the right end of the measuring and adjusting short section 25 is connected to the anti-rotation joint 16 and the transmission sleeve 17 in sequence from left to right, and the transmission sleeve 17 is connected to the body joint 19 through the faucet assembly 18; the circuit control short section 24 is electrically connected to the battery short section 22, the flow meter short section 23, the measuring and adjusting short section 25 and the wireless communication pressure gauge short section 15 respectively.

[0046] Specifically, the upper joint 13, the connecting tube 14 and the main body joint 19 are connected in sequence from left to right. The inner side of the main body joint 19 is connected to the faucet assembly 18. The power end (left end) of the faucet assembly 18 is connected to the transmission sleeve 17. The outer side of the left part of the transmission sleeve 17 is connected to the right part of the anti-rotation joint 16. The wireless communication pressure gauge short section 15 is located inside the connecting tube 14 and fixed to the left side of the main body joint 19.

[0047] The water nozzle permanently placed downhole wave code injection device provided by the present invention, the permanent downhole tool 1 and the wave code communication short section 2 that can be thrown and retrieved are separate independent devices. The permanent downhole tool 1 is placed at the target position downhole. When in use, the wave code communication short section 2 that can be thrown and retrieved is put into the permanent downhole tool 1; after use, the wave code communication short section 2 that can be thrown and retrieved is salvaged from the permanent downhole tool 1, and the transmission sleeve 17 is connected to the body joint 19 through the water nozzle assembly 18; wherein the wireless communication pressure gauge short section 15 is used to measure the external pressure of the connection tube 14, and the water nozzle assembly 18 is used to control the opening of the water nozzle. On the one hand, the water injection volume is adjusted according to demand, and on the other hand, the water nozzle needs to be quickly switched on and off according to demand to provide pressure fluctuations for wave code data transmission.

[0048] After the water nozzle is permanently placed underground, when the throwable and salvageable wave code communication short section 2 is taken out, the opening state of the water nozzle in the drag tube water distributor 10 is not affected, the accuracy of the secondary operation is improved, and the characteristics of the underground water injection nozzle can be retained, which is of great significance for the test instrument (testing the water absorption profile, etc.) to measure the daily water injection volume and the evaluation of the water drive oil effect. The permanent underground tool 1 and the throwable and salvageable wave code communication short section 2 are placed separately, so that the permanent underground tool 1 and the throwable and salvageable wave code communication short section 2 have no sealing relationship, and the gap between the two can be increased, ensuring the function of the instrument (the water nozzle is permanently placed underground and the throwable and salvageable wave code injection device) while greatly reducing the resistance rate of the instrument. At the same time, after the throwable and salvageable wave code communication short section 2 is fished out, the underground water absorption characteristics are guaranteed, providing a guarantee for the water absorption profile test. The permanent downhole tool 1 and the deployable and salvageable wave code communication short section 2 are placed separately. Compared with the integrated device, the device of the present invention has a simple structure, and the deployable and salvageable wave code communication short section 2 is easy to deploy and salvage, so there is no need to frequently deploy and salvage the permanent downhole tool 1, thereby extending its service life.

[0049] The addition of a wireless communication pressure gauge nipple 15, a battery nipple 22, a flow meter nipple 23, and a circuit control nipple 24 facilitates monitoring and data collection, accurately realizes flow regulation, improves the reliability and applicability of the nipple, and can simplify the structure of the communication nipple and reduce the resistance rate of the communication nipple.

[0050] Embodiment 2:

[0051] On the basis of Example 1, Figure 5 and Figure 6 As shown, the horizontal central axis of the positioning joint 11 is provided with an oil pipe thread 111, a limiting inclined surface 112 and a positioning step 113 from left to right in sequence.

[0052] Specifically, an inner hole is opened on the horizontal center axis of the positioning joint 11, and a pipe thread 111, a limiting slope 112 and a positioning step 113 are arranged on the inner hole from left to right. The pipe thread 111 is used to connect with the pipe column; the limiting slope 112 is used to limit the limiting cam 212; the positioning step 113 facilitates the positioning of the positioning arm 214.

[0053] Preferably, the wireless communication pressure gauge short section 15 includes a battery short section 151, a wireless communication module 152 and a pressure sensor 153, and the battery short section 151, the wireless communication module 152 and the pressure sensor 153 are electrically connected in sequence from left to right.

[0054] Specifically, the wireless communication pressure gauge short section 15 is located inside the connecting tube 14 and fixed to one side of the main body joint 19. The right end of the wireless communication pressure gauge short section 15 is designed with a pressure sensor 153, which is connected to the main body joint 19 by threads and communicates with the external pressure conducting hole 192 on the main body joint 19, so as to introduce the pressure outside the support tube water distributor 10 into the pressure sensor 153. The middle part of the wireless communication pressure gauge short section 15 is designed with a wireless communication module 152, which communicates with the wireless module connector 242 matched inside the castable wave code communication short section 15 as needed to realize data transmission. The left end of the wireless communication pressure gauge short section 15 has a built-in battery short section 151, which is used to power the wireless communication module 152 and the pressure sensor 153.

[0055] Preferably, an anti-rotation groove 161 is formed on the inner side of the anti-rotation joint 16 .

[0056] The anti-rotation groove 161 facilitates docking with the anti-rotation block 253, so as to achieve the purpose that the adjustment head 254 in the castable and scoopable wave code communication short section 2 rotates while the main body of the castable and scoopable wave code communication short section 2 does not rotate.

[0057] Preferably, the faucet assembly 18 includes a transmission gear 181, a transmission screw 182 and a faucet valve core 183, and the transmission gear 181, the transmission screw 182 and the faucet valve core 183 are connected in sequence from left to right.

[0058] Specifically, the driving screw 182 drives the faucet valve core 183 to move left and right, changing the relative position of the faucet valve core 183 and the water outlet 193 of the body joint 19, thereby achieving the purpose of adjusting the amount of water injection.

[0059] Preferably, the main body joint 19 includes a gear transmission pair 191, and the transmission sleeve 17 is connected to the transmission gear 181 through the gear transmission pair 191. The main body joint 19 is provided with an external pressure conducting hole 192, a water outlet 193, a water inlet 194 and an oil pipe thread 195 from left to right, and the pressure sensor 153 is connected to the external pressure conducting hole 192.

[0060] Specifically, the transmission gear 181 is connected to the transmission sleeve 17 through a gear transmission pair 191, which is simple and convenient to connect and has a stable structure. The external pressure guide hole 192 is convenient for the pressure sensor 153 to measure the pressure, the water outlet 193 and the water inlet 194 are convenient for water flow, and the oil pipe thread 195 is convenient for connecting the oil pipe string.

[0061] Embodiment 3:

[0062] On the basis of Example 2, the positioning and salvaging short section 21 includes a salvage rod 211, a limiting cam 212, a positioning cam assembly 213, a positioning arm 214 and a positioning body 215. The left end of the positioning body 215 is connected to the salvage rod 211, the positioning body 215 is connected to the positioning cam assembly 213, the side of the positioning body 215 is connected to the limiting cam 212 and the positioning arm 214 from left to right in sequence, the left end of the positioning arm 214 is connected to the positioning cam assembly 213, the limiting cam 212 and the positioning arm 214 are both located in the positioning step 113, and the limiting cam 212 is connected to the limiting inclined surface 112 on the left.

[0063] Specifically, the fishing rod 211 is located at the end of the positioning and salvaging short section 21 and is connected to the general salvaging tool of the oil field. The limiting cam 212 is used in conjunction with the limiting inclined surface 112.

[0064] Preferably, Figure 4 and Figure 7 As shown, the positioning cam assembly 213 includes a positioning cam 2131, a cam wrench reset torsion spring 2132, a cam wrench 2133, a cam wrench pin 2134 and a cam pin 2135. The positioning cam 2131 is cylindrical in shape, and a concave hole 1 is provided on the curved surface of the cylinder. One end of the cam wrench 2133 and the cam wrench reset torsion spring 2132 are sequentially connected from outside to inside in the concave hole 1 through the cam wrench pin 2134. The central axis of the positioning cam 2131 is connected to the positioning body 215 through the cam pin 2135. The left and right planes of the positioning cam 2131 are both provided with an arm opening limit groove A and an arm retracting limit groove B, and the depth of the arm opening limit groove A is greater than that of the arm retracting limit groove B. Specifically, the arm opening limit groove A and the arm retracting limit groove B form a stepped shape.

[0065] Specifically, the positioning arm 214 has two parts, and the end of the positioning arm 214 contacts the positioning step limit surface (A or B) of the positioning cam 2131 to achieve the expansion and contraction of the positioning arm 214. When the positioning arm 214 is opened, its end contacts the positioning step 113 to achieve the positioning of the castable wave code communication short section 2. Figure 6 and Figure 7 shown.

[0066] Specifically, a group of battery components are designed inside the battery short section 222 to supply power to the castable wave code communication short section 2 to ensure the normal operation of the internal control circuit and the motor.

[0067] Preferably, the flow meter nipple 23 includes a flow measurement sensor 231, a pressure measurement sensor 232 and a temperature measurement sensor 233, and the flow measurement sensor 231, the pressure measurement sensor 232 and the temperature measurement sensor 233 are connected in sequence from left to right.

[0068] Specifically, the flow measurement sensor 231 is used to measure the water injection flow through the inner cavity of the pipe string. The pressure measurement sensor 232 is used to measure the inner cavity pressure of the pipe string outside the castable wave code communication short section 2. The temperature measurement sensor 233 measures the temperature of the position where the castable wave code communication short section 2 is located.

[0069] Preferably, the circuit control short section 24 includes a control circuit board 241 and a wireless module connector 242, the control circuit board 241 is electrically connected to the flow measurement sensor 231, the pressure measurement sensor 232, the temperature measurement sensor 233 and the wireless module connector 242 respectively, and the wireless module connector 242 is wirelessly connected to the wireless communication module 152.

[0070] Specifically, the control circuit board 241 is used to receive, send and process data from the flow measurement sensor 231, the pressure measurement sensor 232, the temperature measurement sensor 233, the wireless module connector 242 and the ground control equipment; the wireless module connector 242 communicates with the wireless communication module 152 in the wireless communication pressure gauge short section 15 in the bracket water distributor 10 scheme as needed to realize mutual data transmission.

[0071] Preferably, Figure 3 As shown, the measuring and adjusting short section 25 includes a measuring and adjusting short section body, a motor reducer 251, a transmission shaft 252, an anti-rotation block 253, an adjusting head 254 and an adjusting block 255. The wireless module connector 242 is electrically connected to the motor reducer 251. The power output end of the motor reducer 251 is connected to the adjusting head 254 through the transmission shaft 252. The motor reducer 251 and the transmission shaft 252 are both located in the measuring and adjusting short section body. The measuring and adjusting short section body is externally connected to the anti-rotation block 253. The anti-rotation block 253 is connected to the anti-rotation groove 161. The adjusting head 254 is externally connected to the adjusting block 255. The adjusting block 255 is clamped in the transmission sleeve 17.

[0072] Specifically, the motor reducer 251 rotates forward and reversely according to the command of the control circuit board 241, and transmits the motion to the adjustment head 254 through the transmission shaft 252. The adjustment head 254 is provided with a group of symmetrically arranged adjustment blocks 255, and the adjustment blocks 255 are docked with the adjustment sleeve 17 in the support tube water distributor 10, and drive the adjustment sleeve 17 to rotate. The anti-rotation blocks 253 are symmetrically arranged and docked with the anti-rotation grooves 161 on the anti-rotation joint 16 in the support tube water distributor 10, so as to achieve the purpose that the adjustment head 254 in the castable and salvageable wave code communication short section 2 rotates while the main body of the castable and salvageable wave code communication short section 2 does not rotate.

[0073] Embodiment 4:

[0074] On the basis of Example 3, a process method for a water nozzle permanently placed underground and salvageable wave code injection device according to claim 1 comprises the following steps:

[0075] When in use, the retrievable wave code communication short section 2 is put into the permanent downhole tool 1;

[0076] Specifically, when the flow rate of each layer in the well needs to be adjusted, the flow rate data of each layer is coded and sent to the permanent downhole tool 1 through the ground equipment. After the coding is completed, the ground equipment maintains a constant water injection pressure (constant pressure state).

[0077] When launching the instrument, use the deployable wave code communication short section 2 to insert it into the launcher, and then lower the entire deployable wave code communication short section 2 tool string from the oil pipe to the vicinity of the tool section. At this time, pull the deployable wave code communication short section 2, the positioning cam assembly 213 in the deployable wave code communication short section 2 is reversed, the positioning arm 214 pops up and opens, and the deployable wave code communication short section 2 is continued to be lowered until the positioning deployable wave code communication short section 21 is positioned at the positioning joint 11. At this time, the launcher is disconnected from the deployable wave code communication short section 2, and the deployment of the deployable wave code communication short section 2 is completed.

[0078] Under normal water injection state, the flow meter nipple 23 is used to monitor the water injection flow and pressure fluctuation in the oil pipe nipple 12, and to receive command information. The flow meter nipple 23 transmits the monitored and received information to the circuit control nipple 24; the wireless communication pressure gauge nipple 15 obtains the external pressure data of the drag drum water distributor 10, and sends the obtained data to the circuit control nipple 24; the circuit control nipple 24 controls the rotation of the measuring and adjusting nipple 25 according to the received information, so that the measuring and adjusting nipple 25 controls the water nozzle assembly 18 to adjust the flow through the transmission sleeve 17;

[0079] Under normal water injection conditions, when the salable wave code communication subsection 2 works normally underground, the surface equipment exchanges signals with the salable wave code communication subsection 2 through water injection pressure or flow waves. After receiving the command, the pressure measurement sensor 232 or the flow meter subsection 23 of the salable wave code communication subsection 2 transmits the signal to the circuit control subsection 24; the circuit control subsection 24 parses the command and performs the next operation according to the command content; if a command needs to be sent to the wellhead, the circuit control subsection 24 and the measuring and adjusting subsection 25 switch the 92 permanent water nozzles, which generates a pressure and flow fluctuation. The wellhead monitors the water injection situation, and after detecting the flow and pressure fluctuations, the command is parsed to obtain relevant data.

[0080] When it is necessary to obtain the external pressure of the drum water distributor 10 or to perform a seal inspection operation, the wireless module connector 242 communicates with the wireless communication module 152. After the wireless communication pressure gauge short section 15 obtains data, it transmits it to the measuring and adjusting short section 25 through the wireless module connector 242, and finally stores it in the circuit control short section 24.

[0081] After use, the salvageable wave code communication short section 2 is salvaged from the permanent downhole tool 1.

[0082] When salvaging the salvageable wave code communication short section 2, the salvage device descends at a certain speed in the oil pipe by gravity. The salvage device hits the salvageable wave code communication short section 2 under the action of acceleration, and then the salvage device slips grab the rope cap of the salvageable wave code communication short section 2, and continues to pull, the limit cam 212 and the positioning arm 214 are retracted, and the instrument is lifted out from the well.

[0083] The process method of the water nozzle permanent downhole throwable wave code injection device of the present invention is that the throwable wave code communication short section 2 and the wellhead use the wave code communication principle for wireless data transmission, and the throwable wave code communication short section 2 and the permanent downhole tool 1 use the wireless communication module for data transmission; the throwable wave code communication short section is placed inside the permanent downhole tool 1, and can independently realize the salvage and delivery operation through the throwing and salvaging tool without using the pipe column according to the work requirements, and the instrument is taken out from the inside of the downhole oil pipe for replacement or data reading; the external pressure detection and water nozzle adjustment part are separated from the throwable wave code communication short section 2, so that the throwable wave code communication short section 2 and the permanent downhole tool 1 have no sealing relationship, and the gap between the two can be increased, while ensuring the function of the instrument, the resistance rate of the instrument is greatly reduced, and after the throwable wave code communication short section 2 is fished out, the downhole water absorption characteristics are guaranteed, which provides a guarantee for the water absorption profile test. It can reduce the resistance rate of the communication short section, extend the service life of the instrument, and improve the utilization rate and applicability of the wave code water distributor. At the same time, the working frequency of the wave code water distributor is increased to improve the real-time performance of the formation data.

[0084] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front", "inside", "right", etc. is based on the orientation or positional relationship shown in the drawings, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention.

[0085] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A water nozzle permanently placed in the well and capable of being cast and retrieved, characterized in that: The invention comprises a permanent downhole tool (1) and a castable wave code communication short section (2); the permanent downhole tool (1) comprises a positioning joint (11), a tubing short section (12) and a tow tube water distributor (10); the tow tube water distributor (10) comprises an upper joint (13), a connecting tube (14), a wireless communication pressure gauge short section (15), an anti-rotation joint (16), a transmission sleeve (17), a water nozzle assembly (18) and a body joint (19); the castable wave code communication short section (2) comprises a positioning casting short section (21), a battery short section (22), a flow meter short section (23), a circuit control short section (24) and a measuring and adjusting short section (25); the positioning joint (11), the tubing short section (12), the upper joint (13), the connecting tube (14) and the body joint (19) are connected in sequence from left to right; the positioning casting short section (21), the battery short section (22), the flow meter short section (23) and the body joint (19) are connected in sequence from left to right; The circuit control short section (23), the circuit control short section (24) and the measuring and adjusting short section (25) are connected in sequence from left to right, and the positioning and salvaging short section (21) is connected to the positioning joint (11), the battery short section (22) and the flow meter short section (23) are located in the oil pipe short section (12), the circuit control short section (24) and the measuring and adjusting short section (25) are located in the towing drum water distributor (10), the wireless communication pressure gauge short section (15) is connected between the circuit control short section (24), the measuring and adjusting short section (25) and the connecting tube (14), the outer side of the right end of the measuring and adjusting short section (25) is connected to the anti-rotation joint (16) and the transmission sleeve (17) in sequence from left to right, and the transmission sleeve (17) is connected to the body joint (19) through the water nozzle assembly (18); the circuit control short section (24) is electrically connected to the battery short section (22), the flow meter short section (23), the measuring and adjusting short section (25) and the wireless communication pressure gauge short section (15) respectively.

2. The wave code injection device for permanently placing a water nozzle in a well and capable of being cast and retrieved as claimed in claim 1 is characterized in that: The positioning joint (11) is provided with an oil pipe thread (111), a limiting inclined surface (112) and a positioning step (113) in sequence from left to right on the horizontal central axis.

3. The wave code injection device for a water nozzle permanently placed in a well and capable of being cast and salvaged as claimed in claim 1 is characterized in that: The wireless communication pressure gauge short section (15) comprises a battery short section (151), a wireless communication module (152) and a pressure sensor (153), and the battery short section (151), the wireless communication module (152) and the pressure sensor (153) are electrically connected in sequence from left to right.

4. The wave code injection device for a water nozzle permanently placed in a well and capable of being cast and salvaged as claimed in claim 1 is characterized in that: An anti-rotation groove (161) is provided on the inner side of the anti-rotation joint (16).

5. The wave code injection device for a water nozzle permanently placed in a well and capable of being cast and retrieved as claimed in claim 1 is characterized in that: The faucet assembly (18) comprises a transmission gear (181), a transmission screw (182) and a faucet valve core (183), wherein the transmission gear (181), the transmission screw (182) and the faucet valve core (183) are connected in sequence from left to right.

6. The wave code injection device for permanently placing a water nozzle in a well and capable of being cast and retrieved as claimed in claim 5 is characterized in that: The body joint (19) comprises a gear transmission pair (191), the transmission sleeve (17) is connected to the transmission gear (181) via the gear transmission pair (191), the body joint (19) is provided with an external pressure conducting hole (192), a water outlet (193), a water inlet (194) and a second oil pipe thread (195) in sequence from left to right, and the pressure sensor (153) is communicated with the external pressure conducting hole (192).

7. The wave code injection device for permanently placing a water nozzle in a well and capable of being cast and retrieved as claimed in claim 2 is characterized in that: The positioning and salvaging short section (21) comprises a salvaging rod (211), a limiting cam (212), a positioning cam assembly (213), a positioning arm (214) and a positioning body (215); the left end of the positioning body (215) is connected to the salvaging rod (211); the positioning body (215) is connected to the positioning cam assembly (213); the side surface of the positioning body (215) is connected to the limiting cam (212) and the positioning arm (214) in sequence from left to right; the left end of the positioning arm (214) is connected to the positioning cam assembly (213); the limiting cam (212) and the positioning arm (214) are both located in the positioning step (113); and the limiting cam (212) is connected to the limiting inclined surface (112) on the left.

8. The wave code injection device for a water nozzle permanently placed in a well and capable of being cast and retrieved as claimed in claim 3 is characterized in that: The flow meter nipple (23) comprises a flow measurement sensor (231), a pressure measurement sensor (232) and a temperature measurement sensor (233), and the flow measurement sensor (231), the pressure measurement sensor (232) and the temperature measurement sensor (233) are connected in sequence from left to right.

9. The wave code injection device for a water nozzle permanently placed in a well and capable of being cast and retrieved as claimed in claim 8, characterized in that: The circuit control short section (24) comprises a control circuit board (241) and a wireless module connector (242); the control circuit board (241) is electrically connected to a flow measurement sensor (231), a pressure measurement sensor (232), a temperature measurement sensor (233) and the wireless module connector (242), respectively; and the wireless module connector (242) is wirelessly connected to a wireless communication module (152).

10. A process method based on the water nozzle permanently placed underground and salvageable wave code injection device according to claim 1, characterized in that: The steps include: A downhole tool (1) is placed at a target location downhole; When in use, the retrievable wave code communication short section (2) is placed into the permanent downhole tool (1); Under normal water injection conditions, the flow meter nipple (23) is used to monitor the water injection flow and pressure fluctuations in the oil pipe nipple (12), and to receive command information. The flow meter nipple (23) transmits the monitored and received information to the circuit control nipple (24); the wireless communication pressure gauge nipple (15) obtains the external pressure data of the drag drum water distributor (10), and sends the obtained data to the circuit control nipple (24); the circuit control nipple (24) controls the rotation of the measuring and adjusting nipple (25) according to the received information, thereby causing the measuring and adjusting nipple (25) to control the water nozzle assembly (18) through the transmission sleeve (17) to adjust the flow; After use, the retrievable wave code communication short section (2) is salvaged from the permanent downhole tool (1).

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