Pressure wave communication protocol detection device and method for intelligent water injection well of oil field

Abstract

The invention discloses a pressure wave communication protocol detection device and method for an intelligent water injection well of an oil field. Comprising a water tank; an electric pump; a water outlet header pipe; the starting end of the first water outlet branch pipe is connected with a first water outlet connector of the tee joint, and the tail end of the first water outlet branch pipe extends into the water tank. A pressure release valve is arranged on the first water outlet branch pipe; a ground controller; the starting end of the second water outlet branch pipe is connected with a second water outlet connector of the tee joint, and the tail end of the second water outlet branch pipe is connected with the pressure sensor tool. The pressure sensor is arranged in the pressure sensor tool; the starting end of the third water outlet branch pipe is connected with the front middle part of the second water outlet branch pipe; the executing mechanism is arranged in the water tank and is connected with the tail end of the third water outlet branch pipe; the circuit board is arranged on one side of the water tank; the receiving port is electrically connected with the pressure sensor; and the output port is electrically connected with the execution mechanism. The method has the beneficial effect that various different pressure wave communication protocols can be detected.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent water injection in oil fields, and in particular to a pressure wave communication protocol detection device and method for intelligent water injection wells in oil fields. Background Art

[0002] Water injection is an effective means to improve oil recovery and maintain high and stable oil production in oil field development. At present, underground stratified water injection has gradually shifted from the traditional mechanical casting and bailing stratified water injection method to the pre-set cable stratified water injection method and the cable-free stratified water injection method. However, at present, the pre-set cable stratified water injection method requires running a long cable into the well, which greatly increases the construction cost and operation difficulty. The cable-free stratified water injection method does not require running cables into the well, and transmits signals through pressure waves, electromagnetic waves, sound waves, etc. It is less affected by well inclination and well diameter, and is simple to operate. However, the current cable-free pressure wave stratified water injection tools have problems such as long communication time, poor communication protocol reliability, and lack of pressure wave communication protocol detection means on the ground. The patent of this invention invents a pressure wave water injection tool communication protocol intelligent detection device and method, which can be used to detect various different pressure wave communication protocols. The device is simple and easy to operate, and can provide effective support for the development of pressure wave water injection tools. Summary of the Invention

[0003] The object of the present invention is to provide a pressure wave communication protocol detection device for oilfield intelligent water injection wells, which can detect various pressure wave communication protocols, has a simple device and is easy to operate.

[0004] Another object of the present invention is to provide a pressure wave communication protocol detection method for oil field intelligent water injection wells, which can detect various pressure wave communication protocols and is easy to operate.

[0005] To achieve the above object, the present invention adopts the following technical solutions, including:

[0006] a water tank having a transparent outer side wall;

[0007] an electric pump disposed in the water tank;

[0008] The water outlet main pipe has its starting end connected to the water outlet of the electric pump; the end of the water outlet main pipe is connected to the three-way water inlet interface;

[0009] A first water outlet branch pipe, the starting end of which is connected to the first water outlet interface of the tee and the end of which extends into the water tank; a pressure relief valve is provided on the first water outlet branch pipe;

[0010] a ground controller electrically connected to the electric pump and the pressure relief valve respectively;

[0011] A second water outlet branch pipe, the starting end of which is connected to the second water outlet interface of the tee, and the end of which is connected to the pressure sensor tooling; the pressure sensor is arranged in the pressure sensor tooling, and is used to detect the water pressure in the second water outlet branch pipe;

[0012] a third water outlet branch pipe, the starting end of which is connected to the front middle portion of the second water outlet branch pipe;

[0013] an actuator, which is disposed in the water tank and connected to the end of the third water outlet branch pipe;

[0014] A circuit board is arranged on one side of the water tank; any pressure wave communication protocol to be tested can be written into the circuit board; the receiving port of the circuit board is electrically connected to the pressure sensor; the output port of the circuit board is electrically connected to the actuator; when the water flow pressure change detected by the pressure sensor conforms to the pressure wave communication protocol to be tested, the circuit board sends an instruction to the actuator to adjust the opening and closing degree of the actuator; when the water flow pressure change detected by the pressure sensor does not conform to the pressure wave communication protocol to be tested, the circuit board does not send an instruction to the actuator, and the opening and closing degree of the actuator does not change.

[0015] Preferably, a pressure gauge is provided at the middle and rear portion of the second water outlet branch pipe, and the pressure gauge is electrically connected to the ground controller.

[0016] Preferably, a connecting joint for connecting to the second water outlet branch pipe is provided at the upper part of the pressure sensor tooling; an axial pressure transmission channel is provided in the pressure sensor tooling, and the upper end of the pressure transmission channel is connected to the second water outlet branch pipe; a pressure sensor mounting hole for installing the pressure sensor is provided at the lower part of the pressure transmission channel; the outer periphery of the pressure sensor is adapted to the pressure sensor mounting hole, the upper end face of the pressure sensor is provided with a pressure-bearing surface facing the pressure transmission channel, and the lower end face of the pressure sensor is provided with a signal output line for connecting to the receiving port of the circuit board.

[0017] Preferably, a sealing groove is provided on the outer periphery of the pressure sensor, and an O-ring is provided in the sealing groove.

[0018] Preferably, the actuator includes:

[0019] An upper joint, which is used to connect to the end of the third water outlet branch pipe;

[0020] A faucet short section, the upper end of which is connected to the lower end of the upper joint; a first through hole, a second through hole and a third through hole are coaxially arranged in the faucet short section from top to bottom; a radial faucet is provided above the first through hole;

[0021] A lead screw is axially disposed in the first, second, and third through holes; a movable plug threadedly connected to the lead screw is disposed in the first through hole at the upper portion of the lead screw; the outer circumference of the movable plug is adapted to fit within the first through hole, and the movable plug is used to adjust the opening and closing degree of the water spout; a bearing and a sealing assembly for rolling support of the lead screw and improving sealing performance are disposed in the second through hole;

[0022] an actuator motor, the output shaft of which is connected to the lower end of the lead screw via a coupling; the actuator motor is electrically connected to the output port of the circuit board;

[0023] The motor bracket is covered on the outer periphery of the execution motor and is connected to the lower end of the water nozzle short section.

[0024] A method for detecting a pressure wave communication protocol for an intelligent water injection well in an oil field, using any of the above-mentioned pressure wave communication protocol detection devices for an intelligent water injection well in an oil field, comprises the following steps:

[0025] S1. Place the electric pump in a water tank, connect the water outlet of the electric pump to the main water outlet pipe, and connect the end of the main water outlet pipe to the water inlet port of a tee; connect the first water outlet port of the tee to the starting end of the first water outlet branch pipe; provide a pressure relief valve on the first water outlet branch pipe; extend the end of the first water outlet branch pipe into the water tank; connect the second water outlet port of the tee to the starting end of the second water outlet branch pipe, and connect the end of the second water outlet branch pipe to the pressure sensor tooling; place the actuator in the water tank, and connect the starting end and the end of the third water outlet branch pipe to the front middle portion of the second water outlet branch pipe and the actuator, respectively;

[0026] S2. Electrically connect the ground controller to the electric pump and the pressure relief valve, write an embedded program containing the communication protocol of the pressure wave to be tested into the circuit board, electrically connect the receiving port of the circuit board to the pressure sensor, and electrically connect the output port of the circuit board to the actuator; when the pressure relief valve is closed and the electric pump is turned on, part of the water lifted by the electric pump is sent to the pressure sensor through the water outlet main pipe and the second water outlet branch pipe, and part of the water lifted by the electric pump is sent to the actuator through the water outlet main pipe, the second water outlet branch pipe and the third water outlet branch pipe, and flows back into the water tank through the water nozzle of the actuator; the actuator has a throttling effect, and when the pressure of the pressure sensor is greater than the pressure of the water flowing out of the actuator, high pressure is formed; open the pressure relief valve, and the water lifted by the electric pump is returned to the water tank through the water outlet main pipe, the pressure relief valve and the first water outlet branch pipe, and the pressure of the water in the pressure sensor is reduced, forming low pressure;

[0027] S3. The ground controller regularly opens or closes the pressure relief valve according to the time length specified by the pressure wave communication protocol to be tested, so that a high-pressure and low-pressure alternating pressure wave that conforms to the pressure wave communication protocol to be tested can be formed in the second water outlet branch pipe; when the circuit board determines that the received high-pressure and low-pressure change pattern conforms to the pressure wave communication protocol to be tested, the circuit board sends a command to the actuator to adjust the opening and closing degree of the water nozzle of the actuator; when the circuit board determines that the received high-pressure and low-pressure change pattern does not conform to the pressure wave communication protocol to be tested, the actuator does not move.

[0028] The beneficial effects of the present invention are: being able to detect various pressure wave communication protocols, having a simple device and being easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the pressure wave communication protocol detection device for intelligent water injection wells in oil fields according to the present invention.

[0030] Figure 2 This is a cross-sectional view of the pressure sensor tooling in the present invention.

[0031] Figure 3 It is a three-dimensional diagram of the pressure sensor in the present invention.

[0032] Figure 4 It is a cross-sectional view of the actuator in the present invention. DETAILED DESCRIPTION

[0033] The invention will be described in further detail below with reference to the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0034] 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.

[0035] like Figure 1-4 As shown, the pressure wave communication protocol detection device for an intelligent water injection well in an oil field of the present invention comprises:

[0036] A water tank 1 having a transparent outer wall;

[0037] an electric pump 2, which is arranged in the water tank 1;

[0038] The water outlet main pipe 3, the starting end of which is connected to the water outlet of the electric pump 2; the end of the water outlet main pipe 3 is connected to the water inlet interface of the tee 3-1;

[0039] A first water outlet branch pipe 4, the starting end of which is connected to the first water outlet interface of the tee 3-1 and the end of which extends into the water tank 1; a pressure relief valve 4-1 is provided on the first water outlet branch pipe 4;

[0040] a ground controller 10, which is electrically connected to the electric pump 2 and the pressure relief valve 4-1 respectively;

[0041] A second water outlet branch pipe 5, the starting end of which is connected to the second water outlet interface of the tee 3-1, and the end of the second water outlet branch pipe 5 is connected to the pressure sensor tooling 6;

[0042] A pressure sensor 7 is provided in the pressure sensor fixture 6 and is used to detect the water pressure in the second water outlet branch pipe 5;

[0043] A third water outlet branch pipe 8, the starting end of which is connected to the front middle portion of the second water outlet branch pipe 5;

[0044] an actuator 9, which is disposed in the water tank 1 and connected to the end of the third water outlet branch 8;

[0045] A circuit board 11 is provided on one side of the water tank 1; any pressure wave communication protocol to be tested can be written into the circuit board 11; the receiving port of the circuit board 11 is electrically connected to the pressure sensor 7; the output port of the circuit board 11 is electrically connected to the actuator 9; when the water flow pressure change detected by the pressure sensor 7 conforms to the pressure wave communication protocol to be tested, the circuit board 11 sends an instruction to the actuator 9 to adjust the opening and closing degree of the water nozzle of the actuator 9; when the water flow pressure change detected by the pressure sensor 7 does not conform to the pressure wave communication protocol to be tested, the circuit board 11 does not send an instruction to the actuator 9, and the opening and closing degree of the actuator 9 does not change.

[0046] In another embodiment, a pressure gauge 5 - 1 is provided at the middle and rear portion of the second water outlet branch pipe 5 , and the pressure gauge 5 - 1 is electrically connected to the ground controller 10 .

[0047] In another embodiment, a connecting joint 6-1 for connecting to the second water outlet branch pipe 5 is provided on the upper part of the pressure sensor tooling 6; an axial pressure transmission channel 6-2 is provided in the pressure sensor tooling 6, and the upper end of the pressure transmission channel 6-2 is connected to the second water outlet branch pipe 5; a pressure sensor mounting hole 6-3 for mounting the pressure sensor 7 is provided at the lower part of the pressure transmission channel 6-2; the outer periphery of the pressure sensor 7 is adapted to the pressure sensor mounting hole 6-3, the upper end face of the pressure sensor 7 is provided with a pressure-bearing surface 7-1 facing the pressure transmission channel, and the lower end face of the pressure sensor 7 is provided with a signal output line 7-2 for connecting to the receiving port of the circuit board 11.

[0048] In another embodiment, a sealing groove is provided on the outer periphery of the pressure sensor 7, and an O-ring 7-3 is provided in the sealing groove.

[0049] In another embodiment, the actuator 9 includes:

[0050] Upper connector 9-1, which is used to connect to the end of the third water outlet branch pipe 8;

[0051] The upper end of the faucet short section 9-2 is connected to the lower end of the upper joint 9-1; a first through hole 9-2-1, a second through hole 9-2-2 and a third through hole 9-2-3 are coaxially arranged in the faucet short section 9-2 from top to bottom; a radial faucet 9-3 is provided above the first through hole;

[0052] A lead screw 9-4 is axially arranged in the first through hole 9-2-1, the second through hole 9-2-2 and the third through hole 9-2-3; a movable plug 9-5 threadedly connected to the lead screw 9-4 is provided in the first through hole 9-2-1 at the upper part of the lead screw 9-4; the outer periphery of the movable plug 9-5 is adapted to the first through hole 9-2-1, and the movable plug 9-5 is used to adjust the opening and closing degree of the water nozzle 9-3; a bearing and a sealing assembly 9-6 for rolling support of the lead screw 9-4 and improving sealing performance are provided in the second through hole 9-2-2;

[0053] The output shaft of the actuator motor 9-7 is connected to the lower end of the lead screw 9-4 through a coupling 9-8; the actuator motor 9-7 is electrically connected to the output port of the circuit board 11;

[0054] The motor bracket 9-9 is covered on the outer periphery of the execution motor 9-7 and is connected to the lower end of the water nozzle short section 9-2.

[0055] A method for detecting a pressure wave communication protocol for an intelligent water injection well in an oil field, using any of the above-mentioned pressure wave communication protocol detection devices for an intelligent water injection well in an oil field, comprises the following steps:

[0056] S1. Place the electric pump 2 in the water tank 1, connect the water outlet of the electric pump 2 to the water outlet main pipe 3, and connect the end of the water outlet main pipe 3 to the water inlet interface of the tee 3-1; connect the first water outlet interface of the tee 3-1 to the starting end of the first water outlet branch pipe 4; provide a pressure relief valve 4-1 on the first water outlet branch pipe 4; the end of the first water outlet branch pipe 4 extends into the water tank 1; connect the second water outlet interface of the tee 3-1 to the starting end of the second water outlet branch pipe 5, and the end of the second water outlet branch pipe 5 is connected to the pressure sensor tooling 6; place the actuator 9 in the water tank 1, and connect the starting end and the end of the third water outlet branch pipe 8 to the front middle part of the second water outlet branch pipe 8 and the actuator 9, respectively;

[0057] S2. Electrically connect the ground controller 10 to the electric pump 2 and the pressure relief valve 4-1, write the embedded program containing the pressure wave communication protocol to be tested into the circuit board 11, electrically connect the receiving port of the circuit board 11 to the pressure sensor 7, and electrically connect the output port of the circuit board 11 to the actuator 9; when the pressure relief valve 4-1 is closed and the electric pump 2 is turned on, part of the water lifted by the electric pump 2 is sent to the pressure sensor 7 through the water outlet main pipe 3 and the second water outlet branch pipe 5; part of the water lifted by the electric pump 2 is sent to the actuator 9 through the water outlet main pipe 3, the second water outlet branch pipe 5 and the third water outlet branch pipe 8, and flows back to the water tank through the water nozzle of the actuator 9; the actuator 9 has a throttling effect, and when the pressure of the pressure sensor 7 is greater than the pressure of the water flowing out of the actuator 9, high pressure is formed; open the pressure relief valve 4-1, and the water lifted by the electric pump is returned to the water tank 1 through the water outlet main pipe 3, the pressure relief valve 4-1 and the first water outlet branch pipe 4, and the pressure of the water in the pressure sensor 7 is reduced, forming a low pressure;

[0058] S3. The ground controller 10 regularly opens or closes the pressure relief valve 4-1 according to the time length specified by the pressure wave communication protocol to be tested, thereby forming a high-pressure and low-pressure alternating pressure wave in the second outlet branch pipe 5 that conforms to the pressure wave communication protocol to be tested. When the circuit board 11 determines that the received high-pressure and low-pressure variation patterns conform to the pressure wave communication protocol to be tested, the circuit board 11 issues a command to the actuator 9 to adjust the opening and closing degree of the actuator's water nozzle. When the circuit board 11 determines that the received high-pressure and low-pressure variation patterns do not conform to the pressure wave communication protocol to be tested, the actuator 9 does not operate. By observing the operation of the actuator, the efficiency, reliability, and pressure differential recognition accuracy of the pressure wave communication protocol can be determined, providing support for optimizing and improving the pressure wave communication protocol and improving the efficiency of pressure wave communication.

[0059] In summary, the present invention provides a pressure wave communication protocol detection device for an intelligent water injection well in an oil field, which can detect various pressure wave communication protocols, has a simple device, and is easy to operate.

[0060] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. 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 illustrations shown and described herein.

Claims

1. A pressure wave communication protocol detection device for an intelligent water injection well in an oil field, characterized in that: include: a water tank having a transparent outer side wall; an electric pump disposed in the water tank; The water outlet main pipe has its starting end connected to the water outlet of the electric pump; the end of the water outlet main pipe is connected to the three-way water inlet interface; A first water outlet branch pipe, the starting end of which is connected to the first water outlet interface of the tee and the end of which extends into the water tank; a pressure relief valve is provided on the first water outlet branch pipe; a ground controller electrically connected to the electric pump and the pressure relief valve respectively; A second water outlet branch pipe, the starting end of which is connected to the second water outlet interface of the tee, and the end of which is connected to the pressure sensor tooling; a pressure sensor, which is arranged in the pressure sensor tooling and is used to detect the water flow pressure in the second water outlet branch pipe; a third water outlet branch pipe, the starting end of which is connected to the front middle portion of the second water outlet branch pipe; an actuator, which is disposed in the water tank and connected to the end of the third water outlet branch pipe; A circuit board is arranged on one side of the water tank; any pressure wave communication protocol to be tested can be written into the circuit board; the receiving port of the circuit board is electrically connected to the pressure sensor; the output port of the circuit board is electrically connected to the actuator; when the water flow pressure change detected by the pressure sensor conforms to the pressure wave communication protocol to be tested, the circuit board sends an instruction to the actuator to adjust the opening and closing degree of the actuator; when the water flow pressure change detected by the pressure sensor does not conform to the pressure wave communication protocol to be tested, the circuit board does not send an instruction to the actuator, and the opening and closing degree of the actuator does not change.

2. The pressure wave communication protocol detection device for an intelligent water injection well in an oil field according to claim 1, characterized in that: A pressure gauge is provided at the middle and rear portion of the second water outlet branch pipe, and the pressure gauge is electrically connected to the ground controller.

3. The pressure wave communication protocol detection device for an intelligent water injection well in an oil field according to claim 1 or 2, characterized in that: A connecting joint for connecting to the second water outlet branch pipe is provided on the upper part of the pressure sensor tooling; an axial pressure transmission channel is provided in the pressure sensor tooling, and the upper end of the pressure transmission channel is connected to the second water outlet branch pipe; a pressure sensor mounting hole for installing the pressure sensor is provided at the lower part of the pressure transmission channel; the outer periphery of the pressure sensor is adapted to the pressure sensor mounting hole, the upper end face of the pressure sensor is provided with a pressure-bearing surface facing the pressure transmission channel, and the lower end face of the pressure sensor is provided with a signal output line for connecting to the receiving port of the circuit board.

4. The pressure wave communication protocol detection device for an intelligent water injection well in an oil field according to claim 3, characterized in that: A sealing groove is provided on the outer periphery of the pressure sensor, and an O-ring is provided in the sealing groove.

5. The pressure wave communication protocol detection device for oilfield intelligent water injection wells according to claim 3, characterized in that: The executive mechanism comprises: An upper joint, which is used to connect to the end of the third water outlet branch pipe; A faucet short section, the upper end of which is connected to the lower end of the upper joint; a first through hole, a second through hole and a third through hole are coaxially arranged in the faucet short section from top to bottom; a radial faucet is provided above the first through hole; A lead screw is axially disposed in the first, second, and third through holes; a movable plug threadedly connected to the lead screw is disposed in the first through hole at the upper portion of the lead screw; the outer circumference of the movable plug is adapted to fit within the first through hole, and the movable plug is used to adjust the opening and closing degree of the water spout; a bearing and a sealing assembly for rolling support of the lead screw and improving sealing performance are disposed in the second through hole; an actuator motor, the output shaft of which is connected to the lower end of the lead screw via a coupling; the actuator motor is electrically connected to the output port of the circuit board; The motor bracket is covered on the outer periphery of the execution motor and is connected to the lower end of the water nozzle short section.

6. A method for detecting a pressure wave communication protocol for an intelligent water injection well in an oil field, using the pressure wave communication protocol detection device for an intelligent water injection well in an oil field according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Place the electric pump in a water tank, connect the water outlet of the electric pump to the main water outlet pipe, and connect the end of the main water outlet pipe to the water inlet port of a tee; connect the first water outlet port of the tee to the starting end of the first water outlet branch pipe; provide a pressure relief valve on the first water outlet branch pipe; extend the end of the first water outlet branch pipe into the water tank; connect the second water outlet port of the tee to the starting end of the second water outlet branch pipe, and connect the end of the second water outlet branch pipe to the pressure sensor tooling; place the actuator in the water tank, and connect the starting end and the end of the third water outlet branch pipe to the front middle portion of the second water outlet branch pipe and the actuator, respectively; S2. Electrically connect the ground controller to the electric pump and the pressure relief valve, write an embedded program containing the communication protocol of the pressure wave to be tested into the circuit board, electrically connect the receiving port of the circuit board to the pressure sensor, and electrically connect the output port of the circuit board to the actuator; when the pressure relief valve is closed and the electric pump is turned on, part of the water lifted by the electric pump is sent to the pressure sensor through the water outlet main pipe and the second water outlet branch pipe, and part of the water lifted by the electric pump is sent to the actuator through the water outlet main pipe, the second water outlet branch pipe and the third water outlet branch pipe, and flows back into the water tank through the water nozzle of the actuator; the actuator has a throttling effect, and when the pressure of the pressure sensor is greater than the pressure of the water flowing out of the actuator, high pressure is formed; open the pressure relief valve, and the water lifted by the electric pump is returned to the water tank through the water outlet main pipe, the pressure relief valve and the first water outlet branch pipe, and the pressure of the water in the pressure sensor is reduced, forming low pressure; S3. The ground controller regularly opens or closes the pressure relief valve according to the time length specified by the pressure wave communication protocol to be tested, so that a high-pressure and low-pressure alternating pressure wave that conforms to the pressure wave communication protocol to be tested can be formed in the second water outlet branch pipe; when the circuit board determines that the received high-pressure and low-pressure change pattern conforms to the pressure wave communication protocol to be tested, the circuit board sends a command to the actuator to adjust the opening and closing degree of the water nozzle of the actuator; when the circuit board determines that the received high-pressure and low-pressure change pattern does not conform to the pressure wave communication protocol to be tested, the actuator does not move.

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