CN113669012A - Control method and system for high-pressure particle conveying and sealing - Google Patents
Control method and system for high-pressure particle conveying and sealing Download PDFInfo
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- CN113669012A CN113669012A CN202110779645.XA CN202110779645A CN113669012A CN 113669012 A CN113669012 A CN 113669012A CN 202110779645 A CN202110779645 A CN 202110779645A CN 113669012 A CN113669012 A CN 113669012A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
- F16K5/0652—Spindles or actuating means for remote operation
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Abstract
The invention provides a control method for high-pressure particle conveying and sealing, which comprises the following steps: s101, enabling a high-pressure particle conveying and sealing system to reach an operation condition; s102, the control unit responds to a pressure working mode and controls the opening and closing sequence of each hydraulic ball valve; s103, the control unit obtains the target discharge capacity of the particles and adjusts the opening of the particle flow channel ball valve; s104, judging whether the actual liquid level height of the material storage device is in a preset target or not by the control unit, and sending an adjusting instruction to the flow channel adjusting equipment by the control unit when the actual liquid level height is not in the preset target; and S105, the flow passage adjusting equipment receives an adjusting instruction and adjusts the opening F of the hydraulic ball valve. The high-efficiency stable operation of the conveying system can be effectively ensured, and the automation degree of the system is improved.
Description
Technical Field
The invention relates to a high-pressure particle drilling technology, in particular to a control method and a control system for high-pressure particle conveying and sealing.
Background
In recent years, the particle impact drilling technique, which is a drilling technique for assisting in breaking a deep hard formation and strongly grinding the formation by injecting spherical steel particles having a diameter of 1 to 3mm into the bottom of a well, has been widely used as a revolutionary acceleration technique.
However, the existing particle drilling technology has low automation, and in a material tank, the mixed liquid is easy to exceed the normal range, so that the mixed liquid is splashed or overflows; before the closing or opening process of the particle drilling well is finished, high-hardness particles or other impurities between the ball body and the valve seat cannot be removed, and the problem that the sealing is invalid and even the sealing surface of the ball body and the valve seat is damaged is caused; when the valve is closed or opened, a channel formed between the valve body and the valve ball often enters a large amount of particles or other impurities form accumulation and agglomeration, so that the valve fails, the safe operation of a system is influenced, and the drilling effect is reduced.
Therefore, how to improve the particle drilling effect is a problem to be solved at present.
Disclosure of Invention
The invention aims to provide a control method and a control system for high-pressure particle conveying and sealing, which improve the particle drilling effect.
The invention provides a control method for high-pressure particle conveying and sealing, which comprises the following steps:
s101, the high-pressure particle conveying and sealing system reaches operation conditions, wherein the operation conditions comprise that the actual liquid level height of the material storage device is not less than 300mm,
and, the well team circulation system is in normal working condition;
s102, the control unit responds to a pressure working mode and controls the opening and closing sequence of each hydraulic ball valve;
s103, the control unit obtains the target discharge capacity of the particles and adjusts the opening of the particle flow channel ball valve;
s104, judging whether the actual liquid level height of the material storage device is in a preset target or not by the control unit, and sending an adjusting instruction to the flow channel adjusting equipment by the control unit when the actual liquid level height is not in the preset target;
and S105, the flow passage adjusting equipment receives an adjusting instruction and adjusts the opening F of the hydraulic ball valve.
Preferably, the step S102 includes:
s1021, the first acquisition module acquires the working pressure of the well team circulation system and sends the working pressure to the control unit;
s1022, the control unit determines the pressure working mode of the high-pressure particle conveying and sealing system according to the working pressure of the well team circulation system;
s1023, the control unit searches a switch sequence instruction of the hydraulic ball valve corresponding to the pressure working mode in a prestored mode comparison table;
and S1024, controlling the opening and closing sequence of each hydraulic ball valve by the control unit according to the opening and closing sequence command.
As a preferred technical solution, the step S103 includes:
the second acquisition module acquires the displacement of the drilling fluid in the drilling team circulation system in unit time and sends the displacement to the control unit, and the control unit multiplies the displacement of the drilling fluid in the drilling team circulation system in unit time by a preset percentage to calculate the target displacement of the particles.
Preferably, the preset percentage can be 3%, and the particles are mixed with the drilling fluid according to the proportion, so that the stratum can be better assisted to be broken in the drilling process.
In a preferred embodiment, the adjustment command is,
the opening F of the hydraulic ball valve is adjusted as follows:
F＝Ft+(S*△h)/(Q*T)
the device comprises a material storage device, a hydraulic ball valve, a material storage device, a regulating device and a control device, wherein T is preset regulating time, Ft is the opening degree of the hydraulic ball valve at the moment T, S is the inner sectional area of the material storage device, Q is the flow rate of drilling fluid entering the material storage device in unit time, delta h is the difference value between a preset target and the actual liquid level height of the material storage device, the positive value of delta h indicates that the actual liquid level height is lower than the preset target, and the negative value indicates that the actual liquid level height is higher than the preset target.
As a preferred solution, the preset target is within 700mm to 1000 mmn.
In summary, the particles required by the drilling fluid can be automatically calculated through the control unit, and when the conveying system works, the control unit can adjust the liquid level height in the material storage device in real time, so that the actual liquid level height in the material storage device is in a preset target, the situation that the mixed liquid in the material storage device splashes and is too high to overflow is avoided, and the efficient and stable operation of the conveying system is ensured.
The invention also provides a high-pressure particle conveying and sealing system, which applies the control method and comprises the following steps:
a control unit;
the material storage device is used for storing mixed liquid of the drilling fluid and the particles;
the hydraulic particle injection device is respectively connected with the control unit and the material storage device;
and the flow control and particle metering device is respectively connected with the control unit and the material storage device and is used for changing the opening of the hydraulic ball valve and adjusting the discharge capacity of the particles.
And the well team circulating system is respectively connected with the control unit and the hydraulic particle injection device.
As a preferred technical scheme, the hydraulic ball valve comprises a valve seat and a rotatable ball body arranged in the valve seat, wherein a channel is formed in the ball body, a first installation position and a second installation position are respectively formed at the head end and the tail end of the channel along the inner wall of the channel, a first scraper is arranged on the first installation position, a second scraper is arranged on the second installation position, the connecting end of the first scraper is connected with the first installation position through a first spring, and the connecting end of the second scraper is connected with the second installation position through a second spring;
when the hydraulic ball valve is in an open state, the first spring and the second spring are in a non-compression state, the first scraper exceeds the head end of the channel by a preset distance, and the second scraper exceeds the tail end of the channel by a preset distance; when the hydraulic ball valve is in a closed state, the first scraper and the second scraper are respectively abutted and contacted with the valve seat.
As a preferred technical scheme, the high-pressure particle conveying and sealing system comprises a liquid level monitor, wherein the liquid level monitor is mounted on the material storage device and used for monitoring the liquid level height of mixed liquid in the material storage device. The mixed liquid level in the material storage device is in a safe and reasonable range, and the system operation is guaranteed.
As a preferred technical scheme, the flow control and particle metering device comprises a flow channel adjusting device and a drilling fluid delivery pump, wherein the flow channel adjusting device is respectively connected with the control unit, the material storage device and the hydraulic ball valve and is used for changing the opening degree of the hydraulic ball valve, and the drilling fluid delivery pump is connected with the material storage device through a pipeline. The flow channel adjusting equipment adjusts the flow in the pipeline flowing to the material storage device by adjusting the opening of the hydraulic ball valve, so that the liquid level height in the material storage device is adjusted, and the mixed liquid level is in a safe and reasonable range.
As a preferred technical scheme, the high-pressure particle conveying and sealing system further comprises a driver and a jet pipeline connected with the driver, wherein the jet pipeline is connected with the material storage device;
the jet pipeline comprises a side jet pipe and/or a bottom jet pipe, the side jet pipe is connected with the side wall of the material storage device, and the bottom jet pipe is connected with the bottom surface of the material storage device. The jet flow at the bottom continuously washes the mixture of the drilling fluid and the particles upwards to drive the mixture to turn upwards, the included angle between the lateral jet pipe and the lateral wall of the material storage device is preferably 45-60 degrees, so that the mixed liquid can rotate and flow in the material storage device, and the mixture is swung and stirred when the reversing device in the material storage device reverses, so that the drilling fluid and the particles are uniformly mixed, and the particles are prevented from precipitating.
In summary, the system is provided with a flow control and particle metering device for changing the opening of the hydraulic ball valve, so as to change the flow of the drilling fluid conveyed to the material storage device. And the jet pipeline effectively prevents the particles from precipitating, so that the particles and the drilling fluid are uniformly mixed. The liquid level height of the mixed liquid in the material storage device can be monitored through the liquid level monitor, and overflow of the mixed liquid is avoided. The invention introduces a remote automatic control concept, automatically controls the liquid level of the material tank storage device, reduces the environmental protection risk, prolongs the service life of equipment, and has the advantages of high automation degree of the equipment, uniform mixing of particle drilling fluid and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flowchart of a control method according to a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating specific steps of a first embodiment of the present invention;
FIG. 3 is a schematic view of a high pressure particle transport and sealing system according to a second embodiment of the present invention;
fig. 4 is a schematic view of a hydraulic ball valve according to a second embodiment of the present invention.
Icon: 1-a control unit, 2-a hydraulic particle injection device, 3-a material storage device, 4-a liquid level monitor, 5-a jet pipeline, 6-a flow control and particle metering device, 7-a drilling team circulation system, 8-a drilling fluid tank, 9-a first scraper, 10-a second scraper, 11-a first spring, 12-a second spring, 13-a ball, 14-a valve seat, 15-a valve seat sleeve and 16-a channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, the present embodiment provides a method for controlling high-pressure particle transportation and sealing, which can effectively improve a drilling effect, and specifically includes the following steps:
s101, the high-pressure particle conveying system reaches an operation condition, wherein the operation condition comprises that the actual liquid level height of the material storage device is not lower than 300mm, and a well team circulation system is in a normal working condition;
s102, the control unit responds to a pressure working mode and controls the opening and closing sequence of each hydraulic ball valve;
s103, the control unit obtains the target discharge capacity of the particles and adjusts the opening of the particle flow channel ball valve;
s104, judging whether the actual liquid level height of the material storage device is in a preset target or not by the control unit, and sending an adjusting instruction to the flow channel adjusting equipment by the control unit when the actual liquid level height is not in the preset target;
and S105, the flow passage adjusting equipment receives an adjusting instruction and adjusts the opening F of the hydraulic ball valve.
According to the scheme, the control unit is passed through, the particles required by the drilling fluid can be obtained through automatic calculation, in addition, when the conveying system works, the control unit can adjust the liquid level height in the material storage device in real time, the actual liquid level height in the material storage device is in a preset target, the excessively low liquid level can be avoided, the splashing of the mixed liquid in the material storage device can be avoided, the overhigh liquid level can be avoided, the overflow of the mixed liquid in the material storage device can be avoided, the efficient stable operation of the conveying system is ensured, and the automation degree of the system is improved.
It should be explained that in the material storage device, if the liquid level of the mixed liquid is too low, the mixed liquid is easy to splash when the system is in operation. In the specific starting process, firstly, a control unit starts a soft starter, a high-power motor is started, the high-power motor provides power for a hydraulic particle injection device, the hydraulic particle injection device injects particles into a material storage device, drilling fluid is stored in a drilling fluid tank, the drilling fluid is conveyed into the material storage device through a drilling fluid conveying pump, when mixed liquid in the material storage device reaches a certain liquid level height, the height is preferably 300mm, and at the moment, one of system operation conditions is met; whether the well team circulation system is in a normal working condition or not is also considered, namely whether equipment faults exist in the well team circulation system or not is checked, whether a pipeline leaks or not is checked, and if not, the well team circulation system is in a normal working condition, and another condition for running the system is met. When both the two conditions are met, the subsequent steps of S102 and the like are executed, so that the conveying system can run more safely and stably, and the phenomenon that liquid of the material storage device splashes due to the fact that the liquid level of mixed liquid in the material storage device is too low is avoided.
In one embodiment, as shown in fig. 2, the step S102 includes:
s1021, the first acquisition module acquires the working pressure of the well team circulation system and sends the working pressure to the control unit; the pressure in the circulation system of the drilling crew is a certain pressure, which is generally 25 mpa or 28 mpa, and this embodiment is not limited to this, and it is important that, if particles are to be injected into the circulation system of the drilling crew, the pressure of the particle delivery system needs to be matched with the working pressure of the circulation system of the drilling crew, that is, the pressure of the particle delivery system is not less than the working pressure of the circulation system of the drilling crew.
S1022, the control unit determines the pressure working mode of the high-pressure particle conveying and sealing system according to the working pressure of the well team circulation system; the pressure of the particle delivery system is required to be no less than the working pressure of the drilling crew circulation system.
S1023, the control unit searches a switch sequence instruction of the hydraulic ball valve corresponding to the pressure working mode in a prestored mode comparison table;
and S1024, controlling the opening and closing sequence of each hydraulic ball valve by the control unit according to the opening and closing sequence command. The hydraulic ball valves with different switching sequences can change the pressure of the particle conveying and sealing system, so that the pressure working mode of the particle conveying and sealing system is matched with the working pressure of the well team circulation system.
In one embodiment, step S103 includes:
the second acquisition module acquires the displacement of the drilling fluid in the drilling team circulation system in unit time and sends the displacement to the control unit, and the control unit multiplies the displacement of the drilling fluid in the drilling team circulation system in unit time by a preset percentage to calculate the target displacement of the particles. Preferably, the preset percentage can be 3%, and the particles are mixed with the drilling fluid according to the proportion, so that the stratum can be better assisted to be broken in the drilling process.
It is worth mentioning that the adjustment instruction is,
the opening F of the hydraulic ball valve is adjusted as follows:
F＝Ft+(S*△h)/(Q*T)
the device comprises a material storage device, a hydraulic ball valve, a material storage device, a regulating device and a control device, wherein T is preset regulating time, Ft is the opening degree of the hydraulic ball valve at the moment T, S is the inner sectional area of the material storage device, Q is the flow rate of drilling fluid entering the material storage device in unit time, delta h is the difference value between a preset target and the actual liquid level height of the material storage device, the positive value of delta h indicates that the actual liquid level height is lower than the preset target, and the negative value indicates that the actual liquid level height is higher than the preset target. Preferably, the preset target is within 700mm to 1000 mmn. The hydraulic ball valve changes the opening degree thereof through dynamic adjustment, thereby realizing the dynamic balance of the liquid level in the material storage device, enabling the actual liquid level height of the mixed liquid in the material storage device to be always in a preset target, being not too low, causing the mixed liquid in the material storage device to splash, being not too high, causing the mixed liquid in the material storage device to overflow, and ensuring the efficient and stable operation of the conveying system.
In conclusion, the particles required by the drilling fluid are automatically calculated through the control unit, and when the system works, the control unit can adjust the liquid level height in the material storage device in real time by adjusting the opening degree of the hydraulic ball valve, so that the actual liquid level height in the material storage device is in a preset target, the mixed liquid in the material storage device cannot be splashed due to over-low height, the mixed liquid in the material storage device cannot overflow, and the efficient and stable operation of the conveying system is ensured.
Example two
As shown in fig. 3, the present embodiment further provides a high pressure particle transporting and sealing system, to which the control method of the first embodiment is applied, the system including: a control unit 1, a material storage device 3, a hydraulic particle injection device 2, a flow control and particle metering device 6 and a well team circulation system 7.
The material storage device 3 is used for storing mixed liquid of drilling fluid and particles, and the drilling fluid is stored in a drilling fluid tank 8; the hydraulic particle injection device 2 is respectively connected with the control unit 1 and the material storage device 3; the flow control and particle metering device 6 is respectively connected with the control unit 1, the material storage device 3 and the hydraulic ball valve, and is used for changing the opening degree of the hydraulic ball valve, so that the flow of the drilling fluid flowing through the hydraulic ball valve or the flow of a mixture of particles and the drilling fluid can be adjusted by changing the opening degree of the hydraulic ball valve. The well team circulation system 7 is connected with the control unit 1 and the hydraulic particle injection device 2 respectively.
In some embodiments, as shown in fig. 4, the hydraulic ball valve includes a valve seat 14, a valve seat sleeve 15 connected to the valve seat 14, and a rotatable ball 13 disposed in the valve seat 14, wherein a channel 16 is formed on the ball 13, a first installation location and a second installation location are respectively formed along an inner wall of the channel 16 at a head end and a tail end of the channel 16, a first scraper 9 is disposed on the first installation location, a second scraper 10 is disposed on the second installation location, a connection end of the first scraper 9 is connected to the first installation location through a first spring 11, and a connection end of the second scraper 10 is connected to the second installation location through a second spring 12;
when the hydraulic ball valve is in an open state, the first spring 11 and the second spring 12 are in a non-compression state, the first scraper 9 exceeds the head end of the channel 16 by a preset distance, and the second scraper 10 exceeds the tail end of the channel 16 by a preset distance; when the hydraulic ball valve is in a closed state, the first scraper 9 and the second scraper 10 are respectively abutted against and contacted with the valve seat 14. Preferably, the first scraper 9 and the second scraper 10 may be made of nylon material, and the preset distance may be 0.5 mm. When the ball valve is opened or closed, the first scraper 9 and the second scraper 10 firstly contact the valve seat 14 to scrape out particles or other high-hardness impurities existing between the valve seat 14 and the ball body 13, and the hydraulic ball valve has a cleaning function and avoids the particles from being clamped between the valve seat 14 and the ball body 13 to cause sealing failure or damage to a sealing surface.
In some embodiments, the conveying system further comprises a liquid level monitor 4, the liquid level monitor 4 being mounted on the material storage means 3 for monitoring a liquid level of the mixed liquid within the material storage means 3. The mixed liquid level in the material storage device 3 is in a safe and reasonable range, and the system operation is guaranteed.
Specifically speaking, the flow control and particle metering device 6 comprises a flow channel adjusting device and a drilling fluid delivery pump, wherein the flow channel adjusting device is respectively connected with the control unit 1 and the material storage device 3 and is used for changing the opening degree of the hydraulic ball valve, and the drilling fluid delivery pump is connected with the material storage device 3 through a pipeline. The flow in the pipeline of the material storage device 3 can be adjusted by changing the opening degree of the hydraulic ball valve, the flow can be drilling fluid flow, and the flow can also be the flow of mixed liquid with particles and the drilling fluid, so that the liquid level height in the material storage device 3 is adjusted, and the mixed liquid level is in a safe and reasonable range.
As a preferred technical solution, the system further comprises a driver and a jet pipeline 5 connected with the driver, wherein the jet pipeline 5 is connected with the material storage device 3;
one way of achieving this is that the jet line 5 comprises a side jet pipe, which is connected to the side wall of the material storage device 3. The lateral jet flow and the material tank wall are preferably in an angle of 45-60 degrees, so that the mixed liquid can rotationally flow in the material storage device 3, and the mixed liquid can be swung and stirred when the reversing device in the material storage device 3 reverses, so that the drilling liquid and the particles can be uniformly mixed, and the particles can be prevented from being precipitated.
In another implementation, the jet pipeline 5 includes a bottom jet pipe, and the bottom jet pipe is connected to the bottom surface of the material storage device 3. The jet flow at the bottom continuously washes the mixture of the drilling fluid and the particles upwards to drive the mixture to turn upwards, so that the mixed liquid rotates and flows in the material storage device, and the mixture is swung and stirred when the reversing device in the material storage device 3 reverses, so that the drilling fluid and the particles are uniformly mixed, and the particles are prevented from precipitating.
It should be noted that the bottom surface jet pipe and the side surface jet pipe may be arranged simultaneously or separately.
The control unit 1 mentioned above includes a PLC controller, and an acquisition module connected to the PLC controller. Wherein the acquisition module at least comprises a first acquisition module and a second acquisition module, the first acquisition module is used for acquiring the working pressure of the drilling team circulation system 7 and sending the working pressure to the control unit 1, the second acquisition module is used for acquiring the displacement of the drilling fluid in the drilling team circulation system 7 in unit time and sending the displacement to the control unit 1,
in some embodiments, the control unit 1 further comprises a soft starter, and the control unit 1 starts the high-power motor by starting the soft starter.
In summary, the system can be used to change the opening degree of the hydraulic ball valve by adding the flow control and particle metering device 6, so as to change the flow of the drilling fluid or the mixed fluid of the drilling fluid and the particles which are conveyed to the material storage device 3. And, the jet pipe 5 effectively prevents the particles from settling, so that the particles and the drilling fluid are uniformly mixed. The liquid level height of the mixed liquid in the material storage device 3 can be monitored through the liquid level monitor 4, and the overflow of the mixed liquid is avoided. The invention introduces a remote automatic control concept, so that the liquid level of the material storage device can be automatically controlled, the environmental protection risk is reduced, the service life of the equipment is prolonged, and the invention has the advantages of high automation degree of the equipment, uniform mixing of particle drilling fluid and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for controlling high pressure particle transport and sealing, comprising:
s101, enabling the high-pressure particle conveying and sealing system to reach an operating condition, wherein the operating condition comprises that the actual liquid level height of the material storage device is not lower than 300mm, and the well team circulation system is in a normal working condition;
s102, the control unit responds to a pressure working mode and controls the opening and closing sequence of each hydraulic ball valve;
s103, the control unit obtains the target discharge capacity of the particles and adjusts the opening of the particle flow channel ball valve;
s104, judging whether the actual liquid level height of the material storage device is in a preset target or not by the control unit, and sending an adjusting instruction to the flow channel adjusting equipment by the control unit when the actual liquid level height is not in the preset target;
and S105, the flow passage adjusting equipment receives an adjusting instruction and adjusts the opening F of the hydraulic ball valve.
2. The method as claimed in claim 1, wherein the step S102 comprises:
s1021, the first acquisition module acquires the working pressure of the well team circulation system and sends the working pressure to the control unit;
s1022, the control unit determines the pressure working mode of the high-pressure particle conveying and sealing system according to the working pressure of the well team circulation system;
s1023, the control unit searches a prestored mode comparison table for switching sequence instructions of the hydraulic ball valves corresponding to the pressure working modes;
and S1024, controlling the opening and closing sequence of each hydraulic ball valve by the control unit according to the opening and closing sequence command.
3. The method as claimed in claim 1, wherein the step S103 includes:
the second acquisition module acquires the displacement of the drilling fluid in the drilling team circulation system in unit time and sends the displacement to the control unit, and the control unit multiplies the displacement of the drilling fluid in the drilling team circulation system in unit time by a preset percentage to calculate the target displacement of the particles.
4. The method of claim 1, wherein the adjustment command is,
the opening F of the hydraulic ball valve is adjusted as follows:
F＝Ft+(S*△h)/(Q*T)
the device comprises a material storage device, a hydraulic ball valve, a material storage device, a regulating device and a control device, wherein T is preset regulating time, Ft is the opening degree of the hydraulic ball valve at the moment T, S is the inner sectional area of the material storage device, Q is the flow rate of drilling fluid entering the material storage device in unit time, delta h is the difference value between a preset target and the actual liquid level height of the material storage device, the positive value of delta h indicates that the actual liquid level height is lower than the preset target, and the negative value indicates that the actual liquid level height is higher than the preset target.
5. The method of claim 1, wherein the predetermined target is within a range of 700mm to 1000 mmn.
6. A high pressure particle transport and sealing system, using the control method of any one of claims 1 to 5, comprising:
a control unit;
the material storage device is used for storing mixed liquid of the drilling fluid and the particles;
the hydraulic particle injection device is respectively connected with the control unit and the material storage device;
the flow control and particle metering device is respectively connected with the control unit and the material storage device and is used for changing the opening of the hydraulic ball valve and adjusting the discharge capacity of the particles;
and the well team circulating system is respectively connected with the control unit and the hydraulic particle injection device.
7. The high pressure particle transport and sealing system of claim 6, wherein the hydraulic ball valve comprises a valve seat, a valve seat sleeve connected to the valve seat, and a rotatable ball disposed in the valve seat, wherein a channel is formed in the ball, a first mounting location and a second mounting location are respectively formed along an inner wall of the channel at a head end and a tail end of the channel, a first scraper is disposed on the first mounting location, a second scraper is disposed on the second mounting location, a connection end of the first scraper is connected to the first mounting location through a first spring, and a connection end of the second scraper is connected to the second mounting location through a second spring;
when the hydraulic ball valve is in an open state, the first spring and the second spring are in a non-compression state, the first scraper exceeds the head end of the channel by a preset distance, and the second scraper exceeds the tail end of the channel by a preset distance; when the hydraulic ball valve is in a closed state, the first scraper and the second scraper are respectively abutted and contacted with the valve seat.
8. The high pressure particle delivery and sealing system of claim 6, wherein the flow control and particle metering device comprises a flow channel regulating device and a drilling fluid delivery pump, the flow channel regulating device is connected with the control unit, the material storage device and the hydraulic ball valve respectively for changing the opening degree of the hydraulic ball valve, and the drilling fluid delivery pump is connected with the material storage device through a pipeline.
9. The high pressure particle transport and sealing system of claim 6, further comprising a driver, a fluidic line connected to said driver, said fluidic line connected to said material storage device;
the jet pipeline comprises a side jet pipe and/or a bottom jet pipe, the side jet pipe is connected with the side wall of the material storage device, and the bottom jet pipe is connected with the bottom surface of the material storage device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110779645.XA CN113669012A (en) | 2021-07-09 | 2021-07-09 | Control method and system for high-pressure particle conveying and sealing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110779645.XA CN113669012A (en) | 2021-07-09 | 2021-07-09 | Control method and system for high-pressure particle conveying and sealing |
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| CN113669012A true CN113669012A (en) | 2021-11-19 |
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Application publication date: 20211119 |