CN113585974A - Control method and system for high-pressure particle conveying - Google Patents
Control method and system for high-pressure particle conveying Download PDFInfo
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- CN113585974A CN113585974A CN202110779794.6A CN202110779794A CN113585974A CN 113585974 A CN113585974 A CN 113585974A CN 202110779794 A CN202110779794 A CN 202110779794A CN 113585974 A CN113585974 A CN 113585974A
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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
- 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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Abstract
The invention provides a control method for high-pressure particle conveying, which comprises the following steps: s101, the control unit responds to a pressure working mode and controls the opening and closing sequence of each hydraulic valve block; s102, the control unit obtains the target discharge capacity of the particles and adjusts the opening of the particle flow channel valve block; s103, the control unit judges whether the actual liquid level height of the material storage device is in a preset target or not, and when the actual liquid level height is not in the preset target, the control unit sends an adjusting instruction to the flow channel adjusting equipment to change the opening F of the flow channel adjusting equipment. The method can effectively ensure the efficient and stable operation of the conveying system and improve the automation degree of the system.
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.
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 is low in automation degree, and in a material tank, mixed liquid easily exceeds a normal range, so that the mixed liquid is splashed or overflows, 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, which can improve the particle drilling effect.
The invention provides a control method for high-pressure particle conveying, which comprises the following steps:
s101, the control unit responds to a pressure working mode and controls the opening and closing sequence of each hydraulic valve block;
s102, the control unit obtains the target discharge capacity of the particles and adjusts the opening of the particle flow channel valve block;
s103, the control unit judges whether the actual liquid level height of the material storage device is in a preset target or not, and when the actual liquid level height is not in the preset target, the control unit sends an adjusting instruction to the flow channel adjusting equipment to change the opening F of the flow channel adjusting equipment.
As a preferred technical solution, the step S101 includes:
s1011, the first acquisition module acquires the working pressure of the well team circulation system and sends the working pressure to the control unit;
s1012, the control unit determines a pressure working mode of the particle conveying system according to the working pressure of the well team circulation system;
s1013, the control unit searches a prestored mode comparison table for a switching sequence instruction of the hydraulic valve block corresponding to the pressure working mode;
and S1014, the control unit controls the opening and closing sequence of each hydraulic valve block according to the opening and closing sequence command.
As a preferred technical solution, the step S102 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,
adjusting the opening F of the flow passage adjusting equipment to be as follows:
F＝Ft+(S*△h)/(Q*T)
the device comprises a material storage device, a flow channel adjusting device, a material storage device, a flow channel adjusting device and a flow channel adjusting device, wherein T is preset adjusting time, Ft is the opening degree of the flow channel adjusting device 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 delta h is positive and indicates that the actual liquid level height is lower than the preset target, and negative and indicates that the actual liquid level height is higher than the preset target.
As a preferred technical solution, the preset target is within 700mm to 1000 mm.
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 system, which comprises 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 flow of the drilling fluid in the pipeline.
And the well team circulating system is respectively connected with the control unit and the hydraulic particle injection device.
As a preferred technical solution, the conveying system comprises a liquid level monitor, and the liquid level monitor is installed on the material storage device and is used for monitoring the liquid level height of the mixed liquid in the material storage device. The liquid level of the mixed liquid in the material storage device is in a safe and reasonable range, and the system operation is guaranteed.
According to a preferable technical scheme, the flow control and particle metering device comprises a flow channel adjusting device and a drilling fluid delivery pump, the flow channel adjusting device is respectively connected with the control unit and the material storage device, the flow rate of the drilling fluid in a pipeline is changed by changing the opening degree of the flow channel adjusting device, and the drilling fluid delivery pump is connected with the material storage device through a pipeline. Because the flow channel adjusting equipment can adjust the flow of the drilling fluid flowing into the pipeline of the material storage device, the liquid level height in the material storage device is adjusted, and the liquid level of the mixed liquid is ensured to be in a safe and reasonable range.
As a preferred technical scheme, the conveying 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 bottom jet flow continuously washes the mixture of the drilling fluid and the particles upwards to drive the mixture to turn upwards, the preferred angle between the side jet pipe and the side wall of the material storage device is 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 settling.
In summary, the system can change the flow rate of the drilling fluid in the pipeline by adding the flow control and particle metering device, thereby changing the flow rate of the drilling fluid conveyed into 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, 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 particles and 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 of a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating a control method according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of a high pressure particle delivery system according to a second embodiment of the present invention
Icon: icon: 1-control unit, 2-hydraulic particle injection device, 3-material storage device, 4-liquid level monitor, 5-jet pipeline, 6-flow control and particle metering device, 7-drilling team circulation system and 8-drilling fluid tank.
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 control method for high-pressure particle transportation, which can effectively improve a drilling effect, and specifically includes the following steps:
s101, the control unit responds to a pressure working mode and controls the opening and closing sequence of each hydraulic valve block;
s102, the control unit obtains the target discharge capacity of the particles and adjusts the opening of the particle flow channel valve block;
s103, the control unit judges whether the actual liquid level height of the material storage device is in a preset target or not, and when the actual liquid level height is not in the preset target, the control unit sends an adjusting instruction to the flow channel adjusting equipment to change the opening F of the flow channel adjusting equipment.
Above-mentioned scheme passes through the control unit, can the required particle of drilling fluid by automatic calculation, and, at conveying system during operation, the liquid level height in the material storage device can be adjusted in real time to the control unit, guarantee that the high real-time target that is in of liquid level in the material storage device, can not hang down excessively, cause the interior mixed liquid of material storage device to splash, also can not be too high, cause the mixed liquid in the material storage device to spill over, guarantee conveying system's high-efficient steady operation, the degree of automation of improvement system.
In order to better implement the above solution and achieve a more optimal effect, before step S101, the method may further include: the high pressure particle conveying system reaches an operating condition, wherein the operating condition comprises that the liquid level height of the material storage device is not less than 300mm, and the well team circulation system is in a normal working condition.
In the material storage device, if the liquid level of the mixed liquid is too low, the mixed liquid can be easily splashed when the system runs. Specifically, when the soft starter is started, the control unit starts the soft starter, the high-power motor is started, the high-power motor provides power for the hydraulic particle injection device, the hydraulic particle injection device injects particles into the material storage device, drilling fluid is stored in the drilling fluid tank, the drilling fluid is conveyed into the material storage device through the drilling fluid conveying pump, when the mixed liquid in the material storage device reaches a certain liquid level height, the height is preferably 300mm, and at the moment, one of the operation conditions of the conveying system is met; whether the circulation system of the well team is in a normal working condition or not is also considered, namely whether equipment faults exist in the circulation system of the well team or not, whether pipelines are broken or not is checked, and the like, if the equipment faults do not exist, the circulation system of the well team is in the normal working condition, and at the moment, another condition for running the conveying system is met. When both conditions are met, subsequent steps of S101 and the like are executed, so that the conveying system can run more safely and stably, and liquid splashing in the material storage device due to too low liquid level of mixed liquid in the material storage device is avoided.
In addition, as shown in fig. 2, in one embodiment, the step S101 includes:
s1011, the first acquisition module acquires the working pressure of the well team circulation system and sends the working pressure to the control unit; specifically, 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 is 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.
S1012, the control unit determines a pressure working mode of the particle conveying 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.
S1013, the control unit searches a prestored mode comparison table for a switching sequence instruction of the hydraulic valve block corresponding to the pressure working mode;
and S1014, the control unit controls the opening and closing sequence of each hydraulic valve block according to the opening and closing sequence command. The different switching sequences of the hydraulic valve blocks can change the pressure of the particle conveying system, so that the pressure working mode of the particle conveying system is matched with the working pressure of the well team circulating system.
In one embodiment, step S102 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%, the dosage of the particles is obtained according to the proportion, and then the particles are mixed with the drilling fluid, so that the stratum can be better assisted to be crushed in the drilling process.
It is worth mentioning that the adjustment instruction is,
adjusting the opening F of the flow passage adjusting equipment to be as follows:
F＝Ft+(S*△h)/(Q*T)
the device comprises a material storage device, a flow channel adjusting device, a material storage device, a flow channel adjusting device and a flow channel adjusting device, wherein T is preset adjusting time, Ft is the opening degree of the flow channel adjusting device 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 delta h is positive and indicates that the actual liquid level height is lower than the preset target, and negative and indicates that the actual liquid level height is higher than the preset target. Preferably, the preset target is within 700mm to 1000 mm. Through dynamic adjustment runner adjusting equipment, change its aperture to realize the dynamic balance of liquid level in the material storage device, make the actual liquid level height of mixed liquid in the material storage device be in all the time predetermineeing the target, can not hang down excessively, cause mixed liquid to splash in the material storage device, also can not be too high, cause the mixed liquid in the material storage device to spill over, guarantee conveying system's high-efficient steady operation.
In summary, the particles required by the drilling fluid are obtained through automatic calculation by 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.
Example two
As shown in fig. 3, the present embodiment further provides a high-pressure particle transporting system, including the control method according to the first embodiment, where the transporting system includes: 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 and the material storage device 3 and is used for changing the flow of the drilling fluid in the pipeline; the well team circulation system 7 is connected with the control unit 1 and the hydraulic particle injection device 2 respectively.
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, the flow channel adjusting device is respectively connected with the control unit 1 and the material storage device 3, the flow rate of the drilling fluid in the pipeline is changed by changing the opening degree of the flow channel adjusting device, and the drilling fluid delivery pump is connected with the material storage device 3 through a pipeline. The flow channel adjusting equipment can adjust the flow of the drilling fluid flowing into the pipeline of the material storage device 3, so that the liquid level height in the material storage device 3 is adjusted, and the mixed liquid level is ensured to be in a safe and reasonable range.
As a preferred technical solution, the conveying 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;
in one implementation, the jet line 5 includes a side jet pipe connected to a side wall of the material storage device 33. The side jet pipe and the side wall of the material storage device form an included angle of 45-60 degrees preferably, so that the mixed liquid can rotate and flow in the material storage device 3, and the mixed liquid can swing and stir the mixture when being combined with a reversing device in the material storage device 3 to uniformly mix drilling fluid and particles and prevent the particles from settling.
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 33. 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 flows in the tank in a rotating manner, and the mixture is stirred in a swinging manner 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 comprises a PLC controller, an acquisition module connected with the PLC controller, and hydraulic ball valves connected with 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 is provided with the flow control and particle metering device 6 for changing the flow of the drilling fluid in the pipeline, so that the flow of the drilling fluid conveyed to the material storage device 3 is changed. 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 of controlling high pressure particle transport, comprising:
s101, the control unit responds to a pressure working mode and controls the opening and closing sequence of each hydraulic valve block;
s102, the control unit obtains the target discharge capacity of the particles and adjusts the opening of the particle flow channel valve block;
s103, the control unit judges whether the actual liquid level height of the material storage device is in a preset target or not, and when the actual liquid level height is not in the preset target, the control unit sends an adjusting instruction to the flow channel adjusting equipment to change the opening F of the flow channel adjusting equipment.
2. The method for controlling high pressure particle transport according to claim 1, wherein the step S101 comprises:
s1011, the first acquisition module acquires the working pressure of the well team circulation system and sends the working pressure to the control unit;
s1012, the control unit determines a pressure working mode of the particle conveying system according to the working pressure of the well team circulation system;
s1013, the control unit searches a prestored mode comparison table for a switching sequence instruction of the hydraulic valve block corresponding to the pressure working mode;
and S1014, the control unit controls the opening and closing sequence of each hydraulic valve block according to the opening and closing sequence command.
3. The method for controlling high pressure particle transportation according to claim 1, wherein the step S102 comprises:
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,
adjusting the opening F of the flow passage adjusting equipment to be as follows:
F＝Ft+(S*△h)/(Q*T)
the device comprises a material storage device, a flow channel adjusting device, a material storage device, a flow channel adjusting device and a flow channel adjusting device, wherein T is preset adjusting time, Ft is the opening degree of the flow channel adjusting device 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 delta h is positive and indicates that the actual liquid level height is lower than the preset target, and negative and 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 700mm to 1000 mm.
6. A high pressure particle transport system, using the control method of any of claims 1 to 5, the transport system 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 flow of the drilling fluid in the pipeline;
and the well team circulating system is respectively connected with the control unit and the hydraulic particle injection device.
7. The high pressure particle delivery system of claim 6, comprising a level monitor mounted on the material storage device for monitoring a level of mixed liquid within the material storage device.
8. The high-pressure particle conveying system of claim 6, wherein the flow control and particle metering device comprises a flow channel adjusting device and a drilling fluid conveying pump, the flow channel adjusting device is respectively connected with the control unit and the material storage device, and the flow rate of the drilling fluid in the pipeline is changed by changing the opening degree of the flow channel adjusting device; the drilling fluid delivery pump is connected with the material storage device through a pipeline.
9. The high pressure particle delivery system of claim 6, further comprising an actuator, a fluidic conduit connected to the actuator, the fluidic conduit connected to 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.
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Application publication date: 20211102 |