CN116556908A - Shale gas well foam discharging and dosing device - Google Patents

Abstract

A shale gas well bubble row dosing device comprising: the foaming agent dosing device and the defoaming agent dosing device are arranged on the seat frame; the foaming agent dosing device is provided with a foaming agent solution box, a first water inlet pipeline, a first drug inlet pipeline and a first conveying pipeline for conveying the foaming agent solution to the annulus of the gas production tree oil sleeve, wherein the first conveying pipeline is communicated with a plurality of shale gas wells; the defoaming agent dosing device is provided with a defoaming agent solution box, a second water inlet pipeline, a second medicine inlet pipeline and a separator for conveying the defoaming agent solution to a production pipeline, wherein the production pipeline is communicated with a plurality of shale gas wells. The functional components of the invention are intensively arranged on the seat frame, are compactly and reasonably combined into an independent dosing unit, reduce the cost of labor and time for arranging the foam row dosing technology, reduce the workload of dosing and dispensing, and integrate the land.

Description

Shale gas well foam discharging and dosing device

Technical Field

The invention relates to the technical field of shale gas exploitation, in particular to a shale gas well foam discharging and dosing device.

Background

At present, shale gas is generally accompanied with the removal of stratum water in the exploitation process, namely the exploited shale gas contains water, but certain gas wells can cause effusion in a shaft due to insufficient stratum energy and excessive stratum water; too high a liquid column can influence the smooth extraction of shale gas, so that the gas well gas yield is reduced; the liquid column in the shaft can even block the shaft completely, so that shale gas is difficult to be extracted smoothly, and the phenomenon that a gas well is flooded and does not give out gas occurs. In order to avoid the occurrence of gas well reduction and flooding sites, a chemical adding foam discharging process is generally adopted to foam accumulated liquid in a shaft so as to keep a shale gas extraction channel smooth.

In general, the process of adding medicine foam of the gas production platform is that one well corresponds to one medicine barrel, so that the occupied area is obviously increased, and each medicine barrel is required to be paved with impermeable geotechnical cloth to prevent medicines from dripping to pollute soil, so that the quantity of the medicine barrels and the installation workload of a medicine foam adding device are increased, and medicines are easy to scatter when the medicines are supplemented and blended each time because the quantity of the medicine barrels is excessive.

The invention of Chinese patent CN11170630A discloses an automatic dosing device under a foam drainage gas production well and a dosing method, and the scheme is to cope with a medicament barrel when dosing each gas well, so that the occupied area is increased, and the medicament is easy to scatter and drop, thereby causing environmental pollution.

The shale gas well foam discharging and dosing device which can reduce the cost of labor and time for installing the foam discharging and dosing process, reduce the workload of medicine supplementing and dosing and can be used for intensification has become one of the technical problems to be solved urgently by the person skilled in the art.

Therefore, aiming at the problems existing in the prior art, the designer actively researches and improves the shale gas well foam discharging and dosing device by virtue of years of experience in the industry.

Disclosure of Invention

The invention provides a shale gas well foam discharging and dosing device aiming at the defects that in the prior art, the traditional dosing foam discharging process of a gas production platform not only increases the number of medicament barrels and the installation workload of a dosing foam discharging device, but also easily causes medicament scattering during each medicament supplementing and preparing because of excessive medicament barrels, and the like.

In order to achieve the purpose of the invention, the invention provides a shale gas well foam discharging and dosing device, which comprises the following components:

the foaming agent dosing device and the defoaming agent dosing device are arranged on the seat frame;

the foaming agent dosing device is provided with a foaming agent solution box, a first water inlet pipeline communicated with the foaming agent solution box through a first electromagnetic flowmeter and a first vertical centrifugal pump, a first medicine inlet pipeline communicated with the foaming agent solution box through a second electromagnetic flowmeter and a first gear pump, and a first conveying pipeline for conveying the foaming agent solution in the foaming agent solution box to a gas production tree oil sleeve annulus after the action of a first stirrer, wherein the first conveying pipeline is communicated with a plurality of shale gas wells;

the defoaming agent dosing device is provided with a defoaming agent solution box, a second water inlet pipeline communicated with the defoaming agent solution box through a third electromagnetic flowmeter and a second vertical centrifugal pump, a second medicine inlet pipeline communicated with the foaming agent solution box through a fourth electromagnetic flowmeter and a second gear pump, and a separator for conveying the defoaming agent solution in the defoaming agent solution box to a production pipeline after the action of a second stirrer, wherein the production pipeline is communicated with a plurality of shale gas wells.

Optionally, the foaming agent solution tank is provided with a first magnetic turning plate liquid level meter, so that on-site display and remote display can be realized, and the foaming agent solution tank has the protection functions of high liquid level alarm, low liquid level alarm and low liquid level pump stop.

Optionally, the defoamer solution tank is provided with a second magnetic flap level gauge, so that on-site display and remote display can be realized, and the defoamer solution tank has the protection functions of high-liquid-level alarm, low-liquid-level alarm and low-liquid-level pump stopping.

Optionally, the total liquid level measuring range is the corresponding range of 4-20 mA of the liquid level meter.

Optionally, the shale gas well foam discharging and dosing device adopts an in-situ manual dosing mode or an automatic dosing mode.

Optionally, the shale gas well foam discharging and dosing device corresponds to 4 wells or more.

Optionally, the foamer dosing device has 14 operation modes of single pump operation, double pump operation, three pump operation and four pump operation.

Optionally, the defoamer dosing device has 14 operation modes of single pump operation, double pump operation, three pump operation and four pump operation.

Optionally, the multifunctional liquid level meter further comprises functional components, wherein the functional components are controlled through an electric control cabinet, and the functional components comprise at least one of a solution tank, a stirrer, a metering pump, a liquid level meter, an electric control cabinet, a pipeline, a valve, a distributor, a safety valve, a pressure stabilizer, a pressure gauge and a check valve.

In summary, the functional components of the shale gas well foam discharging and dosing device are all intensively arranged on one seat frame, are compactly and reasonably combined into an independent dosing unit, greatly reduce the labor and time cost of the foam discharging and dosing process, reduce the workload of medicine supplementing and dosing, and can be intensively used, and all the electric devices and meters are intensively assembled in the electric control cabinet.

Drawings

FIG. 1 is a schematic diagram of a foamer dosing device of the shale gas well foam discharging dosing device of the present invention;

FIGS. 2 (a) -2 (c) are schematic diagrams showing the layout of the foamer dosing device of the shale gas well foam discharging dosing device of the invention;

FIG. 3 is a system diagram of a defoamer dosing device of the shale gas well foam discharging dosing device of the present invention;

FIGS. 4 (a) -4 (c) are schematic diagrams showing the layout of the defoamer dosing device of the shale gas well foam discharging dosing device of the present invention;

FIG. 5 is a general view of the operational interface of the foamer dosing device of the shale gas well foam discharging dosing device of the present invention;

FIG. 6 is a general view of parameters of a foamer dosing device of the shale gas well foam discharging dosing device of the invention;

FIG. 7 shows a high pressure alarm diagram for a #4 well;

FIG. 8 is a diagram showing a wellhead alarm interface corresponding to the chained foaming agent during high-pressure alarm of the foaming agent;

FIG. 9 is a general view of an operation interface of the defoamer dosing device;

FIG. 10 is a chart showing parameters of the defoamer dosing device.

Detailed Description

For a detailed description of the technical content, constructional features, achieved objects and effects of the present invention, the following detailed description will be given with reference to the accompanying drawings.

Referring to fig. 1, 2 (a) to 2 (c), and 3, 4 (a) to 4 (c), fig. 1 is a system diagram of a foaming agent adding device of a shale gas well foam discharging adding device according to the present invention. Fig. 2 (a) to 2 (c) show foaming agent dosing device layout diagrams of the shale gas well foam discharging dosing device. FIG. 3 is a system diagram of a defoamer dosing device of the shale gas well foam discharging dosing device. Fig. 4 (a) to 4 (c) are layout diagrams of the defoamer dosing device of the shale gas well foam discharging dosing device. The shale gas well foam discharging and dosing device 1 comprises:

the foaming agent dosing device comprises a seat frame 10, wherein functional components including a foaming agent dosing device 11 and a defoaming agent dosing device 12 are arranged on the seat frame 10, and the functional components are controlled by an electric control cabinet 13;

a foamer dosing device 11, the foamer dosing device 11 having a foamer solution tank 110, a first water inlet line 113 communicating with the foamer solution tank 110 through a first electromagnetic flow meter 111 and a first vertical centrifugal pump 112, a first drug inlet line 116 communicating with the foamer solution tank 110 through a second electromagnetic flow meter 114 and a first gear pump 115, and a first delivery line 119 for delivering the foamer solution in the foamer solution tank 110 to the annulus of the production tree 118 after the first agitator 117 acts, and the first delivery line 119 communicating with a number of shale gas wells;

the defoamer dosing device 12 is provided with a defoamer solution tank 120, a second water inlet pipeline 123 communicated with the defoamer solution tank 120 through a third electromagnetic flowmeter 121 and a second vertical centrifugal pump 122, a second medicine inlet pipeline 126 communicated with the foamer solution tank 120 through a fourth electromagnetic flowmeter 124 and a second gear pump 125, and a separator 129 for conveying the defoamer solution in the defoamer solution tank 120 to a production pipeline 128 after the second stirrer 127 acts, wherein the production pipeline 128 is communicated with a plurality of shale gas wells.

Preferably, the foamer solution tank 110 is provided with a first magnetic flap level gauge 14, which can realize in-situ display and remote display, and has the functions of high-level alarm, low-level alarm and low-level pump stop protection. The defoaming agent solution tank 120 is provided with a second magnetic flap level meter 15, can realize on-site display and remote display, and has the protection functions of high liquid level alarm, low liquid level alarm and low liquid level pump stop.

In order to increase the user experience, the shale gas well foam discharging and dosing device 1 can realize on-site manual dosing adjustment or automatic dosing adjustment according to the user requirements.

As a person skilled in the art will readily appreciate, the functional components of the shale gas well bubble column dosing device 1 include, but are not limited to, a seat frame, a solution tank, a stirrer, a metering pump, a level gauge, an electrical control cabinet, a pipeline, a valve, a dispenser, a safety valve, a pressure stabilizer, a pressure gauge, a check valve, etc., and corresponding auxiliary components may be further configured according to the type of the dosing.

Obviously, the functional components of the shale gas well foam discharging and dosing device 1 are all intensively arranged on a seat frame, are compactly and reasonably combined into an independent dosing unit, greatly reduce the labor and time cost of the foam discharging and dosing process, reduce the dosage and dosing workload, and can be used intensively. In addition, each electric instrument is assembled in the electric control cabinet in a centralized way, and the electric control cabinet is compact in structure, safe and convenient to operate and debug.

In order to more intuitively disclose the technical scheme of the invention and highlight the beneficial effects of the invention, the structure, arrangement, working principle and method of the shale gas well foam discharging and dosing device are described with reference to specific embodiments. In the specific embodiments, the functional interfaces, parameter settings, etc. are only listed, and should not be construed as limiting the technical scheme of the present invention.

Referring to fig. 5 and 6, fig. 5 is a general view of an operation interface of a foamer dosing device of the shale gas well foam discharging dosing device of the invention. Fig. 6 is a general view of parameters of a foamer dosing device of the shale gas well foam discharging dosing device of the invention. The operation interface comprises an operation button, a dispensing parameter setting input window and a picture switching button. The operation buttons comprise a medicine preparation interlocking key, an automatic starting key and an automatic stopping key; the dispensing parameter setting input window comprises a dispensing initial position setting window, a total height setting window of liquid medicine and a medicine/water ratio setting window; the picture switching button comprises a manual operation key, a historical data key, a parameter list key and an alarm key.

As specific embodiments, non-limiting examples include:

the dispensing start position setting window is used for automatically opening a water inlet valve, a water inlet pump and a medicine inlet pump to automatically start dispensing when the background color changes red in the process of selecting a dispensing interlocking key when the liquid level is lower than a preset value (default of 0.2 m).

The total height setting window of the liquid medicine means that when the background color changes red in the medicine dispensing interlocking key, and the liquid level configuration of the solution box is higher than (defaults to 1.2 meters) the preset value, the medicine feeding pump, the water inlet valve and the water inlet pump are stopped, and the solution box finishes the medicine dispensing.

The medicine/water ratio setting window is used for setting the ratio of medicine to water, for example, the default setting is 1:14, the initial dispensing liquid level is set, the dispensing liquid level is stopped, and the dispensing ratio is set, and the automatic control system can automatically calculate the filling amount of water and medicine according to the current liquid level.

The medicine dispensing interlocking key is that the background color becomes red after the button is selected, the medicine feeding pump, the water feeding pump and the water feeding valve can automatically dispense medicine according to the change of the liquid level, the medicine dispensing is automatically stopped when the liquid level is lower than 0.2 meter and the medicine dispensing is automatically stopped when the liquid level is higher than 1.2 meter, and when the button is released, the background color is light blue, and the medicine dispensing is automatically stopped according to the liquid level. It should be noted that, in the process of automatic dispensing, if the drug feeding pump or the solution tank in front of the drug feeding pump has no liquid, the drug feeding pump or the drug feeding pump delays for 90 seconds by using the respective electromagnetic flowmeter, and after 90 seconds, the flow rate is still not available, and the procedure is regarded as that the tank is empty in front of the solution tank, and the drug feeding pump is automatically stopped, the water feeding pump closes the water inlet valve, the automatic dispensing is stopped, the button of the linkage key for dispensing is released, and an alarm is output to remind an operator.

The automatic start key is that after the parameter picture is set with the parameter, clicking the button can automatically operate according to the set time and the operation times.

The automatic stop key is used for clicking the button to stop when the automatic start key is needed to stop or when the automatic operation is abnormal, and the button also has an emergency stop function.

The screen switching button is mainly used for switching screens, and is easily known to those skilled in the art, and will not be described herein.

With continued reference to fig. 6, and with reference to fig. 5, the overall parameter diagram of the foamer dosing device includes parameters such as gas well and pump selection buttons, operation setting time, cycle setting time, setting of the number of injections, overpressure alarm display, display of overpressure and faults of the foamer corresponding to the linkage of the gas well, setting of next (the next day) operation interval time, wellhead high pressure setting, upper limit, lower limit setting of liquid level, high and low concentration setting of gas, and the like.

The gas well and pump selection button refers to selecting a wellhead to be filled according to a field filling system, selecting a pump to be started preferentially, and changing the background color into red after selecting and changing into light blue after canceling.

The time setting is that the time of well head filling and the time of dosing pump operation switching are in min, for example, the time of well head operation is all set to 1 minute at present, the time of dosing pump operation is all set to 60 minutes, if 1# and 2# well operation is selected, the 1# well is closed after 1 minute operation, the 1# dosing pump is automatically switched to 2# well operation for 1 minute, the 2# dosing pump operation is stopped after 60 minutes, the 1# dosing pump operation is stopped after 60 minutes, and the 1# dosing pump operation is stopped after 60 minutes, so the reciprocating operation is realized.

Run time refers to the time that the wellhead has been primed and the pump has been running, M is minutes and S is seconds.

The cycle setting refers to the time of filling and stopping of the wellhead dosing, for example, 1# well is selected in fig. 6, the running time is set to be 1 minute, the cycle time is set to be 2 minutes, and then 1 cycle is to fill 1 minute and stop for one minute.

The filling times are set to be the times of filling the selected wellhead every day, for example, 1# well is selected in fig. 6, the running time is set to be 1 minute, the period time is set to be 2 minutes, and then 1 period is to fill 1 minute and stop for one minute. The number of priming is set to 4, which means that it takes 8 minutes to complete 4 priming sessions per day.

The number of times of filling refers to the number of times that the currently selected wellhead is filled, when the number of times of filling is equal to the set number of times of filling, the system starts to count time and wait (the interval time is up) for the next day, automatically resets, continuously and automatically runs according to the set time and the number of times of filling in the previous day, and repeats.

The valve stopping interval is the time of switching and stopping between wellheads, which is automatically calculated by the system after automatic operation according to the set filling time, the set filling period and the set filling times, and the unit is minutes.

And the circulation operation time is the time of filling times of each wellhead period, which is finished before resetting after the set interval time is reached, after all the filling times of each wellhead period are finished, starting timing, and continuously filling again according to the set value. For example, the filling is started at 8 a.m. on the first day, 8 hours are required for completing 4 times of filling, and the filling is completed at 4 pm, which is to set the circulation running time of 16H which is equivalent to the time and the times of filling in the day before 8 a.m. on the next day, and the filling is continued from the new filling time to cycle.

The stirring operation time is that after automatic dispensing is completed, the automatic operation is stopped after a set time, and the stopping is also timed according to the set stopping time.

The stirring stop time is that after automatic dispensing is completed, the automatic operation is stopped after a set time, and the automatic dispensing is started after timing according to the set stop time, for example, 5 minutes are set in a picture, the automatic dispensing is stopped for 5 minutes after the automatic dispensing is completed, then the automatic dispensing is stopped for 5 minutes again, and the automatic dispensing is repeated.

The current liquid level refers to the actual liquid level value of the current solution tank.

The upper limit of the liquid level is the upper limit of the set liquid level, and the limit is not involved in control and only alarms.

The lower limit of the liquid level is the lower limit of the set liquid level, the limit participates in control, when the liquid level is reduced to the lower limit in automatic operation, the equipment is automatically stopped, and when the liquid level is supplemented to be above the lower liquid level, the equipment is automatically started.

The lower limit of the liquid level refers to the lower limit of the set liquid level, the limit participates in control, when the liquid level falls to the lower limit when the equipment is in automatic operation, the equipment is automatically stopped, and when the liquid level is supplemented to be above the lower liquid level, the equipment is automatically started.

The measuring range of the liquid level meter is the measuring range of the current liquid level sensor, the pressure type liquid level sensor with higher precision is adopted in the solution box for dispensing when the factory leaves, the measuring range is 0-2 meters, meanwhile, the solution box is also provided with a magnetic turning plate 4-20 mA remote transmission, the measuring range is 0-1.3 meters, when the pressure type liquid level sensor fails, the wiring of the lower magnetic turning plate 4-20 mA remote transmission can be replaced in the terminal box of the explosion-proof cabinet immediately, and the measuring range is changed into 1.3 meters.

The current pressure refers to the current real-time pressure of the pump outlet.

The highest pressure is the pressure upper limit set by the pump outlet, if the real-time pressure is greater than the set value during the operation of the pump, the pump is automatically stopped, the alarm is output, and the corresponding wellhead pressure alarm background color is red. At this point, the operator is required to confirm and reset on site.

The pressure alarm means that the selected wellhead exceeds the set highest pressure during operation, and when the corresponding wellhead is in high pressure alarm, the corresponding wellhead pressure alarm background is red in color. At the moment, operators need to confirm on site and click for resetting, an electric valve corresponding to a wellhead is opened after clicking for resetting, a pump is started, the background color of an alarm is changed from red to normal gray, and if high-voltage alarm is triggered again, the alarm is output again, and the background color is changed into red

Referring to fig. 7, fig. 7 shows a high pressure alarm diagram for the 4# well. As shown in FIG. 7, after the high-pressure alarm is generated in the 4# well, an operator checks the equipment under the condition that the equipment is not obviously abnormal or the equipment fault point is removed, the red background color is not changed into grey immediately after clicking the 'required reset' button, the corresponding 4# well electric valve is automatically opened after clicking the reset button, the dosing pump is started, the background color of the high-pressure alarm is reset into grey after the dosing pump is started, and the high-pressure alarms of other wellheads are treated in the same way.

Referring to fig. 8, fig. 8 shows a wellhead alarm interface diagram corresponding to the chained foaming agent during high-pressure alarm of the defoaming agent. The high-pressure alarm of the defoaming agent means that the wellhead selected by the defoaming agent dosing has high-pressure alarm or pump out fault, so that the wellhead stops filling, and the wellhead corresponding to the foaming agent is also stopped filling at the moment. The high-pressure alarm of the defoaming agent occurs or the filling wellhead stopped due to the pump out fault can give an alarm, and meanwhile, an alarm signal can be transmitted to the foaming agent automatic control system, and the corresponding wellhead can give an alarm with red background color.

When the defoaming agent alarm shown in fig. 8 occurs, even though the foaming agent in the running 2# well is automatically stopped, the foaming agent dosing pump closes the valve of the 2# well to stop filling, but the running time is continuously accumulated, so that the filling of the lower well is not affected, after the defoaming agent fault is relieved, the fault on the foaming agent side is automatically relieved, and the foaming agent is continuously filled according to the set time.

The water inflow is the real-time water inflow during dispensing.

The medicine feeding flow is the real-time medicine feeding flow when medicine is assigned.

The combustible gas concentration refers to the concentration in real time at present.

The high concentration of the gas means that the concentration content of the combustible gas around the combustible gas concentration meter in the room exceeds the upper limit of combustibility and explosiveness, at the moment, all the equipment is stopped in a chain mode, and a fan is opened in a chain mode to ventilate, so that the concentration of the combustible gas is reduced. Meanwhile, the fan can be opened to ventilate and cool when the temperature in the explosion-proof cabinet is high.

The low concentration of the gas means that the concentration content of the combustible gas around the combustible gas concentration meter in the room is lower than the lower limit of combustibility and explosiveness, and at the moment, the equipment is started in a linkage mode, and the fan is stopped in a linkage mode.

The automatic start means that after the parameter picture is set with the parameter, clicking the button can automatically operate according to the set time and the operation times.

The automatic stop means that when the automatic start is needed to be stopped or when the automatic operation is abnormal, the button is clicked to stop, and the button also has an emergency stop function, but the automatic dispensing is not controlled by the button, the automatic dispensing and the automatic dispensing are separated and independent, the automatic dispensing can be controlled by the dispensing interlocking button, and the automatic filling can be controlled by the automatic stopping button.

Referring to fig. 9, fig. 9 is a general view of an operation interface of the defoamer dosing device. The operation interface is provided with an operation button, a dispensing parameter setting input window and a picture switching button. The operation button comprises a medicine preparation interlocking key, an automatic starting key and an automatic stopping key; the dispensing parameter setting input window comprises a dispensing initial position setting window, a total height setting window of liquid medicine and a medicine/water ratio setting window; the picture switching button comprises a manual operation key, a historical data key, a parameter list key and an alarm key.

The dispensing start position setting window is used for automatically opening a water inlet valve, a water inlet pump and a medicine inlet pump to automatically start dispensing when the background color changes red in the process of selecting a dispensing interlocking key when the liquid level is lower than a preset value (default of 0.2 m).

The total height setting window of the liquid medicine means that when the background color changes red in the medicine dispensing interlocking key, and the liquid level configuration of the solution box is higher than (defaults to 1.2 meters) the preset value, the medicine feeding pump, the water inlet valve and the water inlet pump are stopped, and the solution box finishes the medicine dispensing.

The medicine/water ratio setting window is used for setting the ratio of medicine to water, for example, the default setting is 1:14, the initial dispensing liquid level is set, the dispensing liquid level is stopped, and the dispensing ratio is set, and the automatic control system can automatically calculate the filling amount of water and medicine according to the current liquid level.

The medicine dispensing interlocking key is that the background color becomes red after the button is selected, the medicine feeding pump, the water feeding pump and the water feeding valve can automatically dispense medicine according to the change of the liquid level, the medicine dispensing is automatically stopped when the liquid level is lower than 0.2 meter and the medicine dispensing is automatically stopped when the liquid level is higher than 1.2 meter, and the background color is light blue when the button is released, so that the medicine dispensing is not automatically performed according to the liquid level. It should be noted that, in the process of automatic dispensing, if the drug feeding pump or the solution tank in front of the drug feeding pump has no liquid, the drug feeding pump or the drug feeding pump delays for 90 seconds by using the respective electromagnetic flowmeter, and after 90 seconds, the flow rate is still not available, and the procedure is regarded as that the tank is empty in front of the solution tank, and the drug feeding pump is automatically stopped, the water feeding pump closes the water inlet valve, the automatic dispensing is stopped, the button of the linkage key for dispensing is released, and an alarm is output to remind an operator.

The automatic start key is that after the parameter picture is set with the parameter, clicking the button can automatically operate according to the set time and the operation times.

The automatic stop key is used for clicking the button to stop after automatic start or when automatic operation is abnormal, and the button also has an emergency stop function, but the automatic dispensing is not controlled by the button, the automatic dispensing and the automatic dispensing are separated and independent, the automatic dispensing can be controlled by a dispensing interlocking button, and the automatic filling can be controlled by the automatic stopping button.

The screen switching button is mainly used for switching screens, and is easily known to those skilled in the art, and will not be described herein.

Referring to fig. 10, fig. 10 is a chart showing parameters of the defoamer dosing device. The parameter table picture comprises various parameters such as a gas well selection button, wellhead high-pressure setting, overpressure alarm display, fault display, upper limit, lower limit and lower limit setting of liquid level, high-low concentration setting of gas and the like.

The gas well selection button is used for selecting a wellhead to be filled according to a field filling system, and after the wellhead to be filled is selected, the background color becomes red, and after the wellhead to be filled is canceled, the background color becomes light blue.

The current pressure refers to the actual pressure at the outlet of each pump.

The high pressure setting means that the pump pumps out the pressure high limit that the pump sets up, if this set value is greater than to the real-time pressure during the pump operation, the pump automatic stop to alarm output, the corresponding well head pressure alarm background colour is red. At this point, the operator is required to confirm and reset on site.

The high-pressure alarm means that when the real-time pressure is greater than a set value during the operation of the pump, the pump automatically stops and outputs an alarm, and the corresponding wellhead pressure alarm background is red. At the moment, the operator needs to confirm and reset on site, the high-pressure alarm can interlock the wellhead corresponding to the foaming agent to stop adding medicine, and when the standby pump also generates the high-pressure alarm, the reset button for the high-pressure maintenance of the standby pump needs to be clicked independently to reset.

The fault reset means that when the pump operates, the thermal relay in the explosion-proof cabinet detects overload to trigger overload protection, operation personnel are needed to confirm whether the pump or the motor has a problem, after the problem is solved, the explosion-proof cabinet is opened, the thermal relay is reset, the fault can trigger the standby pump to start after the fault is generated, and if the standby pump is started, the fault alarm can chain the wellhead corresponding to the foaming agent to stop adding medicine.

The stirring operation time is that after automatic dispensing is completed, the automatic operation is stopped after a set time, and the stopping is also timed according to the set stopping time.

The stirring stop time is that after automatic dispensing is completed, the automatic operation is stopped after a set time, and the automatic dispensing is started after timing according to the set stop time, for example, 5 minutes are set in a picture, the automatic dispensing is stopped for 5 minutes after the automatic dispensing is completed, then the automatic dispensing is stopped for 5 minutes again, and the automatic dispensing is repeated.

The current liquid level refers to the actual liquid level value of the current solution tank.

The upper limit of the liquid level is the upper limit of the set liquid level, and the limit is not involved in control and only alarms.

The lower limit of the liquid level is the lower limit of the set liquid level, the limit participates in control, when the liquid level is reduced to the lower limit in automatic operation, the equipment is automatically stopped, and when the liquid level is supplemented to be above the lower liquid level, the equipment is automatically started.

The lower limit of the liquid level refers to the lower limit of the set liquid level, the limit participates in control, when the liquid level falls to the lower limit when the equipment is in automatic operation, the equipment is automatically stopped, and when the liquid level is supplemented to be above the lower liquid level, the equipment is automatically started.

The measuring range of the liquid level meter is the measuring range of the current liquid level sensor, the pressure type liquid level sensor with higher precision is adopted in the solution box for dispensing when the factory leaves, the measuring range is 0-2 meters, meanwhile, the solution box is also provided with a magnetic turning plate 4-20 mA remote transmission, the measuring range is 0-1.3 meters, when the pressure type liquid level sensor fails, the wiring of the lower magnetic turning plate 4-20 mA remote transmission can be replaced in the terminal box of the explosion-proof cabinet immediately, and the measuring range is changed into 1.3 meters.

As will be readily appreciated by those skilled in the art, there are 14 modes of operation of the defoamer dosing device, including in particular,

the single pump operation (1 # well, 2# well, 3# well and 4# well) is optional, and 4 operation modes are taken as a total;

the double pump operation (1#2 #, 1#3#, 1#4#, 2#3#, 2#4#, 3#4#) is optional for 6 operation modes in total;

three pumps (1#2#3#, 1#2#4#, 2#3#4#) are optionally operated in total of 3 modes of operation;

four pumps (1#2#3#4#) operate in a total of 1 mode of operation.

Before the equipment is selected, chain operation parameters are set on the inner surface of a parameter table according to actual requirements, then the equipment is selected, an automatic start button is clicked, the equipment can automatically operate according to the set parameters, if the problem of high pressure of a gas well occurs during operation, the dosing of a corresponding well can be automatically stopped, if the pump fails to give an alarm, the equipment is automatically switched to a standby pump to operate, and an electric valve of the corresponding gas well is started to continue dosing.

If the equipment has high pressure or faults of the gas well, manual maintenance is needed, and after the maintenance is finished, a reset button of the gas well is clicked, and the normal pump operation is switched.

If the standby pump has high pressure or faults during operation, the standby pump is automatically stopped, the corresponding electric valve is closed, and the maintenance is waited for.

Similarly, the foamer dosing device has 14 modes of operation, including in particular,

the single pump operation (1 # well, 2# well, 3# well and 4# well) is optional, and 4 operation modes are taken as a total;

the double pump operation (1#2 #, 1#3#, 1#4#, 2#3#, 2#4#, 3#4#) is optional for 6 operation modes in total;

three pumps (1#2#3#, 1#2#4#, 2#3#4#) are optionally operated in total of 3 modes of operation;

four pumps (1#2#3#4#) operate in a total of 1 mode of operation.

Before the equipment is selected, chain operation parameters are set on the inner surface of a parameter table according to actual requirements, then the equipment is selected, an automatic start button is clicked, the equipment can automatically operate according to the set parameters, if a high-pressure problem of a gas well occurs during operation, the dosing of a corresponding well can be stopped, but the operation steps are continued, if a fault alarm occurs to the pump, the equipment is automatically switched to another pump for operation, and then the dosing is continued.

If the equipment has high pressure or faults of the gas well, manual maintenance is needed, and after the maintenance of the high pressure is completed, a high-pressure maintenance reset button is clicked, and the normal pump operation is switched. And after the fault maintenance is completed, the fault pump is reset and then used as a standby pump.

More specifically, the defoamer dosing device operating parameter settings are described below,

1. setting high pressure, namely setting the highest pressure corresponding to the operation of each well, when the operation pressure is greater than the set pressure, turning red the high pressure alarm button, stopping filling the well, simultaneously alarming and outputting, manually overhauling, cleaning blockage, clicking the alarm reset button of the corresponding well after cleaning, and recovering normal operation.

2. When the gas well runs, the corresponding metering pump fails, the fault alarm reset icon turns yellow, the corresponding gas well stops filling, manual overhaul is completed, the fault is reset manually, and normal operation is restored.

3. If the operation of the standby pump has high pressure or faults, the filling of the corresponding gas well is stopped, and the standby pump needs to be manually overhauled and reset.

4. Setting a liquid level measuring range, wherein the total liquid level measuring range is a measuring range of 4-20 mA of a corresponding liquid level meter, when the liquid level is at the lower limit, the liquid level meter controls the measurement to stop, and the liquid level is in alarm output, and the lower limit of the liquid level is in alarm output, and meanwhile, dispensing is started, so that the normal liquid level of a medicine box is ensured, and the normal operation of a gas well is met.

5. The stirring operation time is set, namely the equipment is stirred and operated for a period of time, stopped and operated circularly when dispensing.

6. When the concentration of the combustible gas is high, the equipment is completely stopped, the exhaust fan is started, the gas is exhausted, the concentration of the space is reduced, when the concentration is reduced to low concentration, the exhaust fan is closed, and the equipment is started to normally operate.

7. If the flow of the water inlet flow and the medicine inlet flow are low, the medicine dispensing and the alarm are stopped, and the pump is possibly problematic, or the liquid level of the incoming materials is low, and manual inspection is needed.

8. And if the clicking time is more than 1 second during operation, the misoperation is prevented.

9. The automatic start button is red when no device is selected, the unselected device is displayed, and the automatic start button can be displayed only after the device is selected, and the operation can be performed at the moment.

The operating parameter settings of the foamer dosing device are described below,

1. the highest pressure is set, corresponds the highest pressure in the operation of every well, and when operating pressure is greater than the settlement pressure, high pressure warning can turn red, and this well just stops the filling, and alarm output simultaneously needs the manual maintenance, clears up the jam, clicks high pressure maintenance reset button after the clearance is accomplished, resumes normal operating.

2. When the gas well runs, if the metering pump breaks down, the fault alarm reset icon turns yellow and can be immediately switched to the operation of the standby pump, and meanwhile, the fault can send out an alarm signal and needs manual overhaul treatment.

3. The foaming agent dosing is that 2 pumps correspond to 4 wells, one pump is required to be selected as a main operation pump before normal operation, if the main pump fails, the operation is switched to a second pump for operation, the operation time of the pumps is set, and in normal operation, the metering pump can automatically switch and circulate according to the set time of each pump.

4. Setting a liquid level measuring range, wherein the total liquid level measuring range is a measuring range of 4-20 mA of a corresponding liquid level meter, when the liquid level is at the lower limit, the liquid level meter controls the measurement to stop, and the liquid level is in alarm output, and the lower limit of the liquid level is in alarm output, and meanwhile, dispensing is started, so that the normal liquid level of a medicine box is ensured, and the normal operation of a gas well is met.

5. The stirring operation time is set, namely the equipment is stirred and operated for a period of time, stopped and operated circularly when dispensing.

6. When the concentration of the combustible gas is high, the equipment is completely stopped, the exhaust fan is started, the gas is exhausted, the concentration of the space is reduced, when the concentration is reduced to low concentration, the exhaust fan is closed, and the equipment is started to normally operate.

7. If the flow of the water inlet flow and the medicine inlet flow are low, the medicine dispensing and the alarm are stopped, and the pump is possibly problematic, or the liquid level of the incoming materials is low, and manual inspection is needed.

8. The time setting is corresponding to the time of each well needing to be filled, the filling times are the times of each well needing to be filled, the period setting is the time of filling a plurality of wells for one day, and the circulating operation time is the time from the completion of the operation at present to the restarting of the next day.

9. And if the clicking time is more than 1 second during operation, the misoperation is prevented.

10. The automatic start button is red when no device is selected, the unselected device is displayed, and the automatic start button can be displayed only after the device is selected, and the operation can be performed at the moment.

11. The foaming agent device is in communication connection with the defoaming agent device, if one of the gas wells of the defoaming agent is at high pressure or fails, the gas well dosing of the corresponding foaming agent is stopped, the foaming agent is operated normally, and if the foaming agent is overhauled and reset, the gas well corresponding to the foaming agent is reset correspondingly, and the foaming agent is operated normally.

In summary, the functional components of the shale gas well foam discharging and dosing device are all intensively arranged on one seat frame, are compactly and reasonably combined into an independent dosing unit, greatly reduce the labor and time cost of the foam discharging and dosing process, reduce the workload of medicine supplementing and dosing, and can be intensively used, and all the electric devices and meters are intensively assembled in the electric control cabinet.

It will be appreciated by those skilled in the art that various modifications and variations can be made to the invention without departing from the spirit or scope of the invention. Accordingly, the present invention is deemed to cover any modifications and variations, if they fall within the scope of the appended claims and their equivalents.

Claims (9)

1. Shale gas well bubble row dosing device, characterized in that, shale gas well bubble row dosing device includes:

the foaming agent dosing device and the defoaming agent dosing device are arranged on the seat frame;

the foaming agent dosing device is provided with a foaming agent solution box, a first water inlet pipeline communicated with the foaming agent solution box through a first electromagnetic flowmeter and a first vertical centrifugal pump, a first medicine inlet pipeline communicated with the foaming agent solution box through a second electromagnetic flowmeter and a first gear pump, and a first conveying pipeline for conveying the foaming agent solution in the foaming agent solution box to a gas production tree oil sleeve annulus after the action of a first stirrer, wherein the first conveying pipeline is communicated with a plurality of shale gas wells;

the defoaming agent dosing device is provided with a defoaming agent solution box, a second water inlet pipeline communicated with the defoaming agent solution box through a third electromagnetic flowmeter and a second vertical centrifugal pump, a second medicine inlet pipeline communicated with the foaming agent solution box through a fourth electromagnetic flowmeter and a second gear pump, and a separator for conveying the defoaming agent solution in the defoaming agent solution box to a production pipeline after the action of a second stirrer, wherein the production pipeline is communicated with a plurality of shale gas wells.

2. The shale gas well foam-exhaust dosing device of claim 1, wherein the foamer solution tank is provided with a first magnetic flap level gauge, can realize in-situ display and remote display, and has high liquid level alarm, low liquid level alarm and low liquid level pump stop protection functions.

3. The shale gas well foam-exhaust dosing device of claim 1, wherein the defoamer solution tank is provided with a second magnetic flap level gauge, can realize in-situ display and remote display, and has the functions of high liquid level alarm, low liquid level alarm and low liquid level pump stop protection.

4. A shale gas well foam-exhaust dosing device as claimed in claim 2 or claim 3, wherein the total range of liquid levels is the range of 4-20 mA of the corresponding level gauge.

5. The shale gas well bubble row dosing apparatus of claim 1, wherein the shale gas well bubble row dosing apparatus is in situ manually adjusted dosing or automatically adjusted dosing.

6. The shale gas well bubble row dosing device of claim 1, wherein the shale gas well bubble row dosing device corresponds to 4 wells and above.

7. The shale gas well foam-exhaust dosing apparatus of claim 6, wherein the foamer dosing apparatus has 14 modes of operation, single pump operation, dual pump operation, three pump operation, four pump operation.

8. The shale gas well bubble row dosing apparatus of claim 6, wherein the defoamer dosing apparatus has 14 modes of operation, single pump operation, dual pump operation, three pump operation, four pump operation.

9. The shale gas well bubble row dosing apparatus of claim 1, further comprising functional components, wherein the functional components are all controlled by an electronic control cabinet, the functional components comprising at least one of a solution tank, a stirrer, a metering pump, a level gauge, an electrical control cabinet, a pipeline, a valve, a dispenser, a safety valve, a pressure stabilizer, a pressure gauge, a check valve.