CN105974070B - A kind of underground water influences analogue means and method to coal bed gas - Google Patents

A kind of underground water influences analogue means and method to coal bed gas Download PDF

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Publication number
CN105974070B
CN105974070B CN201610583232.3A CN201610583232A CN105974070B CN 105974070 B CN105974070 B CN 105974070B CN 201610583232 A CN201610583232 A CN 201610583232A CN 105974070 B CN105974070 B CN 105974070B
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pressurized tank
pressure
coal
gas
water
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CN201610583232.3A
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Chinese (zh)
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CN105974070A (en
Inventor
熊集兵
卞正富
雷少刚
杨德军
王涛
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中国矿业大学
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00

Abstract

Influenceing analogue means and method, described device to coal bed gas the invention discloses a kind of underground water includes sample bin and high pressure gas bottle;The sample bin is mainly made up of pressurized tank, and the pressurized tank is integrally cylindrical, is separably combined into by two semicolumns;The pressurized tank is provided with pressure gauge and moisture trap;The pressurized tank is connected with high pressure gas bottle.Apparatus of the present invention and method are easy and effective, applicable large volume coal sample, and without broken.Also accommodate under condition of different temperatures, investigate the influence that different pressures, water quality, ature of coal, coal-water ratio store to coal bed gas.

Description

A kind of underground water influences analogue means and method to coal bed gas
Technical field
The present invention relates to a kind of experimental provision and method to coal bed gas, and in particular to a kind of underground water influences on coal bed gas Analogue means and method.
Background technology
Coal bed gas is mainly that adsorbed state is stored in the double porosity media of coal.In coal bed gas stores migration research, underground Storage of the water on coal bed gas influences the emphasis that research is always coal bed gas storage research.
Chinese patent grant number is CN100487755C, and it discloses a kind of analogue device for coal layer pneumatolytic deposit, simulation dress Put and be made up of gas boosting pump, constant temperature cabinet, control system and computer processing system.
Application publication number is CN1 01799466A, and it discloses a kind of coal bed gas and produces physical simulating device and simulation side Method, the analogue means include sample bin, water bath with thermostatic control system, gas water metering system and pressure monitor system, sample bin and passed through Gas water configuration production flow line is interconnected to form simulation system, and water bath with thermostatic control system is set around simulation system, simulation system Sample bin access confined pressure simulation pipeline, the gas water configuration of sample bin end, which produces, sets pressure monitor system on pipeline, simulation system The connection simulation well head united on the gas water configuration production pipeline of end, simulation well head connection gas water metering system.
Above analogue means structure is complex, can not meet the simulation of bulk coal sample, control temperature is up to 100 DEG C of In addition it can not confirm that different solid compares the influence of coal bed gas storage.
The content of the invention
In view of the shortcomings of the prior art, the present invention is intended to provide a kind of underground water influences analogue means and side to coal bed gas Method, apparatus structure is simple, applicable large volume coal sample, and without broken.Also accommodating different temperatures, (maximum temperature is up to 400 DEG C) under the conditions of, investigate the influence that different pressures, water quality, ature of coal, coal-water ratio store to coal bed gas.
To achieve these goals, the present invention adopts the following technical scheme that:
A kind of underground water influences analogue means, including sample bin and high pressure gas bottle on coal bed gas;The sample bin is main It is made up of pressurized tank, the pressurized tank is integrally cylindrical, is separably combined into by two semicolumns;On the pressurized tank Provided with pressure gauge and moisture trap;The pressurized tank is connected with high pressure gas bottle.
It should be noted that it is additionally provided with safety valve on the pressurized tank.What the safety valve can be used with adherence pressure tank Security.
It should be noted that the high pressure gas bottle is communicated with pressure-reducing valve, the pressurized tank is provided with air inlet connection valve, institute Pressure-reducing valve is stated with the air inlet connection valve to be connected.
It should be noted that two semicolumns are combined by screw, and the joint of two semicolumns is provided with sealing gasket. Arbitrarily it can be opened or combined with reference to two semicolumns by screw, the setting of sealing gasket then causes two semicolumns to combine There is higher sealing property afterwards.
It should be noted that the outer surface of the pressurized tank is wound with load coil, the load coil master To be made up of induction coil and thermostat, the induction coil is electrically connected at the thermostat.By setting sensing heating line Circle, can also be controlled to the temperature of pressurized tank, so as to influence of the realization temperature to coal bed gas.
The application method that above-mentioned underground water influences analogue means on coal bed gas comprises the following steps:
S1 determine then to set as influence factor to be studied in pressure, coal-water ratio, water quality and ature of coal other three because The fixation value of element, and set the different values of several influence factors to be studied;
S2 proceeds as follows to each value of influence factor to be studied;
Two semicolumns of the pressurized tank are separated, coal sample and water are put into by the coal-water ratio of setting, water quality and ature of coal are equal Need the requirement for meeting setting;Pressurized tank is closed, the induction coil of load coil is wrapped in the pressurized tank surface;
Pressure-reducing valve and air inlet connection valve are opened, gas is discharged to pressurized tank by certain flow rate by high pressure gas bottle, passed through Pressure gauge investigates the pressure of pressurized tank, until reaching the pressure value of setting;Pressurized tank is heated by the induction coil, And be controlled by operation of the thermostat to induction coil, until pressurized tank to be heated to the temperature of setting;
Pressure-reducing valve is closed when reaching and needing pressure, a small amount of gas is then released from pressurized tank and by the air water point It is acquired from device, sample analysis is carried out to gaseous sample therein and water sample, determines gas componant and concentration in pressurized tank;
After S3 carries out step S2 operation to all setting values of influence factor to be studied, under different setting values Gas componant and concentration in the pressurized tank of gained are contrasted, you can know influence of the factor to coal bed gas.
The beneficial effects of the present invention are:
1st, the present invention can be achieved with investigating different pressures, water quality, ature of coal, coal-water ratio by simple and effective apparatus and method Influence to coal bed gas storage, and applicable large volume coal sample, and without broken.
2nd, it is suitable under condition of different temperatures, investigates the shadow that different pressures, water quality, ature of coal, coal-water ratio store to coal bed gas Ring.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of apparatus of the present invention.
Embodiment
Below with reference to accompanying drawing, the invention will be further described, it is necessary to which explanation, the present embodiment is with this technology side Premised on case, detailed embodiment and specific operating process are given, but protection scope of the present invention is not limited to this reality Apply example.
As shown in figure 1, a kind of underground water influences analogue means, including sample bin and high pressure gas bottle 2 on coal bed gas;It is described Sample bin is mainly made up of pressurized tank 1, and the pressurized tank 1 is overall cylindrical, is separably tied by two semicolumns 11 and 12 Conjunction forms;The pressurized tank 1 is provided with pressure gauge 3 and moisture trap 4;The pressurized tank 1 is connected with high pressure gas bottle 2.
As a kind of preferred scheme, safety valve 5 is additionally provided with the pressurized tank 1.
As a kind of preferred scheme, 2 bottles of the high pressure gas is communicated with pressure-reducing valve 6, and the pressurized tank 1 connects provided with air inlet Valve 7 is connect, the pressure-reducing valve 6 is connected with the air inlet connection valve 7.
As a kind of preferred scheme, two semicolumns 11 and 12 are combined by screw, and the joint of two semicolumns Provided with sealing gasket 8.
It should be noted that the outer surface of the pressurized tank is wound with load coil, the load coil master To be made up of induction coil 9 and thermostat, the induction coil is electrically connected at the thermostat.
The application method that above-mentioned underground water influences analogue means on coal bed gas comprises the following steps:
S1 determine then to set as influence factor to be studied in pressure, coal-water ratio, water quality and ature of coal other three because The fixation value of element, and set the different values of several influence factors to be studied;
S2 proceeds as follows to each value of influence factor to be studied;
Two semicolumns of the pressurized tank are separated, coal sample and water are put into by the coal-water ratio of setting, water quality and ature of coal are equal Need the requirement for meeting setting;Pressurized tank is closed, the induction coil of load coil is wrapped in the pressurized tank surface;
Pressure-reducing valve and air inlet connection valve are opened, gas is discharged to pressurized tank by certain flow rate by high pressure gas bottle, passed through Pressure gauge investigates the pressure of pressurized tank, until reaching the pressure value of setting;Pressurized tank is heated by the induction coil, And be controlled by operation of the thermostat to induction coil, until pressurized tank to be heated to the temperature of setting;
Pressure-reducing valve is closed when reaching and needing pressure, a small amount of gas is then released from pressurized tank and by the air water point It is acquired from device, sample analysis is carried out to gaseous sample therein and water sample, determines gas componant and concentration in pressurized tank;
After S3 carries out step S2 operation to all setting values of influence factor to be studied, under different setting values Gas componant and concentration in the pressurized tank of gained are contrasted, you can know influence of the factor to coal bed gas.
Embodiment one
S1 determines influence of the research pressure to coal bed gas, then set coal water quality ratio, water quality and ature of coal be respectively 20: 1, Total salinity 0.5g/L, lignite, and the different values of pressure are set as 1MPa, 5MPa, 10MPa, 15MPa.
S2 proceeds as follows to each value of pressure;
Two semicolumns of the pressurized tank are separated, coal sample and water are put into the ratio 20: 1 of setting, the water of its reclaimed water Matter needs the condition for meeting total salinity 0.5g/L, closes pressurized tank;And the induction coil of load coil is wrapped in pressure Tank surface;
Pressure-reducing valve and air inlet connection valve are opened, gas is discharged to pressurized tank by certain flow rate by high pressure gas bottle, passed through Pressure gauge investigates the pressure of pressurized tank, until reaching the pressure value (1MPa, 5MPa, 10MPa, 15MPa) of setting;Pass through the sense Answer coil to heat pressurized tank, and be controlled by operation of the thermostat to induction coil, until pressurized tank is heated to The temperature (setting as needed) of setting;
Pressure-reducing valve is closed when reaching and needing pressure, a small amount of gas is then released from pressurized tank and by the air water point It is acquired from device, sample analysis is carried out to gaseous sample therein and water sample, determines gas componant and concentration in pressurized tank;
After S3 carries out step S2 operation to all setting values of pressure, to different setting value (1MPa, 5MPa, 10MPa, 15MPa) under gained pressurized tank in gas componant and concentration contrasted, you can know shadow of the pressure to coal bed gas Ring.
Embodiment two
S1 determines that Study on Coal water quality compares the influence of coal bed gas, then set pressure, water quality and ature of coal be respectively 1MPa, Total salinity 0.5g/L, lignite, and set coal water quality than different values as 20: 1,10: 1,5: 1,1: 1,1: 10,1: 20;
S2 to coal water quality than each value proceed as follows;
Two semicolumns of the pressurized tank are separated, by coal sample and water in the ratio (20: 1,10: 1,5: 1,1: 1,1 set : 10,1: 20) be put into, the water quality of its reclaimed water needs the condition for meeting total salinity 0.5g/L, closes pressurized tank;And sensing heating The induction coil of coil is wrapped in pressurized tank surface;
Pressure-reducing valve and air inlet connection valve are opened, gas is discharged to pressurized tank by certain flow rate by high pressure gas bottle, passed through Pressure gauge investigates the pressure of pressurized tank, until reaching the pressure value 1MPa of setting;Pressurized tank is carried out by the induction coil Heating, and be controlled by operation of the thermostat to induction coil, until pressurized tank is heated into the temperature of setting (as needed Setting);
Pressure-reducing valve is closed when reaching and needing pressure, a small amount of gas is then released from pressurized tank and by the air water point It is acquired from device, sample analysis is carried out to gaseous sample therein and water sample, determines gas componant and concentration in pressurized tank;
S3 to coal water quality than all setting values carry out step S2 operation after, to different setting values (20: 1,10 : 1,5: 1,1: 1,1: 10,1: gas componant and concentration under 20) in the pressurized tank of gained are contrasted, you can know coal water quality Amount compares the influence of coal bed gas.
Embodiment three
S1 determines influence of the research water quality to coal bed gas, then set pressure, coal water quality ratio and ature of coal be respectively 1MPa, 20: 1, lignite, and the different values of water quality are set as total salinity 0.5g/L, total salinity 2g/L, total salinity 8g/L, Zong Kuang Change degree 25g/L, total salinity 60g/L;
S2 proceeds as follows to each value of water quality;
Two semicolumns of the pressurized tank are separated, coal sample and water are put into the ratio 20: 1 of setting, the water of its reclaimed water Matter value meets that the condition of setting is (total salinity 0.5g/L, total salinity 2g/L, total salinity 8g/L, total salinity 25g/L, total Salinity 60g/L), close pressurized tank;And the induction coil of load coil is wrapped in pressurized tank surface;
Pressure-reducing valve and air inlet connection valve are opened, gas is discharged to pressurized tank by certain flow rate by high pressure gas bottle, passed through Pressure gauge investigates the pressure of pressurized tank, until reaching the pressure value 1MPa of setting;Pressurized tank is carried out by the induction coil Heating, and be controlled by operation of the thermostat to induction coil, until pressurized tank is heated into the temperature of setting (as needed Setting);
Pressure-reducing valve is closed when reaching and needing pressure, a small amount of gas is then released from pressurized tank and by the air water point It is acquired from device, sample analysis is carried out to gaseous sample therein and water sample, determines gas componant and concentration in pressurized tank;
After S3 carries out step S2 operation to all setting values of water quality, to different setting value (total salinity 0.5g/ L, total salinity 2g/L, total salinity 8g/L, total salinity 25g/L, total salinity 60g/L) under gained pressurized tank in gas Body composition and concentration are contrasted, you can know influence of the water quality to coal bed gas.
Example IV
S1 determines the influence of Study on Coal confrontation coal bed gas, then set pressure, coal water quality ratio and water quality be respectively 1MPa, 20: 1, total salinity 0.5g/L, and set ature of coal and be taken as lignite, bituminous coal, anthracite respectively;
S2 proceeds as follows to every kind of ature of coal;
Two semicolumns of the pressurized tank are separated, coal sample and water are put into the ratio 20: 1 of setting, wherein ature of coal expires Sufficient preparatory condition (lignite, bituminous coal, anthracite), water quality value meets total salinity 0.5g/L, closes pressurized tank;And sensing heating line The induction coil of circle is wrapped in pressurized tank surface;
Pressure-reducing valve and air inlet connection valve are opened, gas is discharged to pressurized tank by certain flow rate by high pressure gas bottle, passed through Pressure gauge investigates the pressure of pressurized tank, until reaching the pressure value 1MPa of setting;Pressurized tank is carried out by the induction coil Heating, and be controlled by operation of the thermostat to induction coil, until pressurized tank is heated into the temperature of setting (as needed Setting);
Pressure-reducing valve is closed when reaching and needing pressure, a small amount of gas is then released from pressurized tank and by the air water point It is acquired from device, sample analysis is carried out to gaseous sample therein and water sample, determines gas componant and concentration in pressurized tank;
After S3 carries out step S2 operation to the ature of coal of all kinds, to different atures of coal (lignite, bituminous coal, anthracite) Gas componant and concentration in the pressurized tank of lower gained are contrasted, you can know influence of the ature of coal to coal bed gas.
In embodiment one to four, a level is maintained at using three factors of control, investigates the 4th factor difference water The flat influence to coal bed gas storage, so as to simulate the shadow that different pressures, water quality, ature of coal, coal water quality compare coal bed gas storage Ring.
For those skilled in the art, technical scheme that can be more than and design, make various corresponding Change and deform, and all these change and deformation should be construed as being included within the protection domain of the claims in the present invention.

Claims (1)

1. a kind of underground water influences the application method of analogue means on coal bed gas, it is characterised in that
The underground water influences analogue means, including sample bin and high pressure gas bottle on coal bed gas;The sample bin is mainly by pressing Power tank forms, and the pressurized tank is integrally cylindrical, is separably combined into by two semicolumns;The pressurized tank is provided with Pressure gauge and moisture trap;The pressurized tank is connected with high pressure gas bottle;The high pressure gas bottle is communicated with pressure-reducing valve, institute State pressurized tank and be provided with air inlet connection valve, the pressure-reducing valve is connected with the air inlet connection valve;The outer surface of the pressurized tank Load coil is wound with, the load coil is mainly made up of induction coil and thermostat, the induction coil electricity Property is connected to the thermostat;
The application method comprises the following steps:
S1 determines then to set other three factors as influence factor to be studied in pressure, coal-water ratio, water quality and ature of coal Fixed value, and set the different values of several influence factors to be studied;
S2 proceeds as follows to each value of influence factor to be studied;
Two semicolumns of the pressurized tank are separated, coal sample and water are put into by the coal-water ratio of setting, water quality and ature of coal are required to Meet the requirement of setting;Pressurized tank is closed, the induction coil of load coil is wrapped in the pressurized tank surface;
Pressure-reducing valve and air inlet connection valve are opened, gas is discharged to pressurized tank by certain flow rate by high pressure gas bottle, passes through pressure Table investigates the pressure of pressurized tank, until reaching the pressure value of setting;Pressurized tank is heated by the induction coil, and by Operation of the thermostat to induction coil is controlled, until pressurized tank to be heated to the temperature of setting;
Pressure-reducing valve is closed when reaching and needing pressure, a small amount of gas is then released from pressurized tank and by the moisture trap It is acquired, sample analysis is carried out to gaseous sample therein and water sample, determines gas componant and concentration in pressurized tank;
After S3 carries out step S2 operation to all setting values of influence factor to be studied, to gained under different setting values Pressurized tank in gas componant and concentration contrasted, you can know influence of the factor to coal bed gas.
CN201610583232.3A 2016-07-22 2016-07-22 A kind of underground water influences analogue means and method to coal bed gas CN105974070B (en)

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