CN104655522A - On-site shale gas desorption analyzer - Google Patents
On-site shale gas desorption analyzer Download PDFInfo
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- CN104655522A CN104655522A CN201510054451.8A CN201510054451A CN104655522A CN 104655522 A CN104655522 A CN 104655522A CN 201510054451 A CN201510054451 A CN 201510054451A CN 104655522 A CN104655522 A CN 104655522A
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Abstract
The invention discloses an on-site shale gas desorption analyzer. The on-site shale gas desorption analyzer disclosed by the invention is compact in overall structure and low in experimental environment requirements and is applied to convenient on-site testing of a vehicle-mounted room or simple room nearby a well site. The analyzer is low in power, and power of the analyzer can be supplied by a generator or supplied conventionally. According to the set of instrument, the content of gas of a shale gas site can be tested, the content of gas of tight gas reservoir, coal bed gas and other site rock cores also can be tested, and the accuracy is high. According to the well site customer test requirements, the rapid site shale gas desorption analyzer can be connected with an on-line gas analyzer, and gas components and change in the shale gas desorption process can be synchronously analyzed. The components of the shale gas can be rapidly determined, and the degassing rule can be researched. The on-site shale gas desorption analyzer is equipped with a rapid gas sample production joint, and the gas separated from rock core samples can be conveniently collected to be used for subsequent accurate testing and analysis in a lab, such as gas component analysis and gas isotope analysis in the lab.
Description
Technical field:
The invention belongs to shale gas preparing technical field, be specifically related to a kind of shale gas site desorption Fufen analyzer.
Background technology:
Shale gas site desorption Fufen analyzer is a kind of device for shale gas assay, is a kind of instrument parsing gas content at shale gas well on-the-spot directly measurement shale, mainly carries out analysis and calculation to the loss gas in shale gassiness and desorption gas.
The equipment of desorption rate is measured in the shale of current routine or coal petrography well site now, and because it adopts drainage to measure, it can cause following shortcoming:
1, heating water bath, causes overall instrument volume large, and due to the existence of liquid, not easily delivers.
2, need repeatedly observe graduated cylinder or buret meniscus, easily cause personal error.
And the equipment of desorption rate is measured now when data acquisition in the shale of current routine or coal petrography well site, need manually to carry out typing, waste time and energy.
Summary of the invention:
The object of this invention is to provide that the little convenient delivery of a kind of volume, measuring accuracy are high, data acquisition and control automatization, guarantee shale gas desorption gas component be by air impact, programming automation can be realized run, greatly reduce the shale gas site desorption Fufen analyzer of hand labor.
Shale gas site desorption Fufen analyzer of the present invention, comprise solution cucurbitula, it is characterized in that, also comprise reference cell and constant temperature oven, be provided with in constant temperature oven and separate cucurbitula, reference cell, the first air-operated solenoid valve, the second air-operated solenoid valve, the 3rd air-operated solenoid valve, the 4th air-operated solenoid valve and temperature controller, described solution cucurbitula through pipeline respectively with the second air-operated solenoid valve, 4th air-operated solenoid valve is connected, 4th other one end of air-operated solenoid valve is connected with gas outlet, gas outlet passes the vent port on constant temperature oven, pipeline between solution cucurbitula and the 4th air-operated solenoid valve is also connected with air collecting pipe, this air collecting pipe is connected with the portable gas production interface on constant temperature tank wall, gas outlet and air collecting pipe are all also provided with retaining valve, described reference cell through pipeline respectively with the first air-operated solenoid valve, second air-operated solenoid valve is connected with the 3rd air-operated solenoid valve, the first air-operated solenoid valve other end is connected with helium draft tube, retaining valve is provided with in helium draft tube, the other end of the 3rd described air-operated solenoid valve is connected with the pipeline between the retaining valve on gas outlet to the 4th air-operated solenoid valve, the first described air-operated solenoid valve, second air-operated solenoid valve, 3rd air-operated solenoid valve is connected with cylinder manifold with the 4th air-operated solenoid valve via line, controlled by cylinder manifold, cylinder manifold is connected with temperature and pressure control signal again, described reference cell is provided with the first thermopair and the first pressure transducer, described solution cucurbitula is provided with the second thermopair and the second pressure transducer, first thermopair and the second thermopair are all connected with temperature and pressure control signal, also be provided with host computer, described temperature and pressure control is connected with host computer signal, and described solution cucurbitula overcoat has separates cucurbitula heating jacket, and this solution cucurbitula heating jacket is connected with temperature controller,
Described temperature controller conciliates cucurbitula heating jacket to the temperature in constant temperature oven to control.
Described temperature and pressure control is the signal that reception cylinder manifold transmits, and first thermopair and the second thermopair signal and be transferred to host computer, and receive the next control signal of host computer transmission, send signal again to cylinder manifold, to control the first air-operated solenoid valve, the second air-operated solenoid valve, the 3rd air-operated solenoid valve and the 4th air-operated solenoid valve;
The data that described host computer comes for receiving the transmission of temperature and pressure control, show data, store and analyze, and under signal to and with temperature and pressure control, it controlled, by host computer display measurement process and result intuitively.
Preferably, the first described pressure transducer, the second pressure transducer are all connected with temperature and pressure control signal, first pressure transducer and the second pressure transducer transfer data to temperature and pressure control, temperature and pressure control transfers signals to host computer again and shows, temperature controller is connected with host computer, and control signal is transferred to temperature controller by host computer, controls temperature controller, make temperature controller heat constant temperature oven or cool, thus control the temperature of constant temperature oven.
Described temperature controller comprises the electric heater unit be located in constant temperature oven, controls the temperature in constant temperature oven by controlling this electric heater unit.
The present invention is compared to prior art, and its beneficial effect is as follows:
The technological innovation of the many aspects such as novelty pipe design, automatic data collection, automation data analysis, Optimization analyses flow process has been merged in the present invention, and be in a leading position level in the Chinese same industry, also belongs to more advanced level in the world.
Its major advantage is as follows:
1) optimize circuit design, volume reduces greatly, convenient delivery
The equipment of desorption rate is measured in conventional shale or coal petrography well site now, is mostly to adopt drainage to measure, and heating water bath, causes overall instrument volume large, and due to the existence of liquid, not easily delivers.The present invention, by optimizing circuit design, adopts the test amount of gas evolveds such as pressure transducer, and adopts electrical heating method to maintain constant temperature, greatly reduces instrument volume, and convenient migration.Be applicable to the mensuration of shale gas, the on-the-spot desorption gas of coal-seam gas.If match with portable tumbling mill (Mill Roller), can residual volume be tested, calculate total air content of shale and the gas diffusivity of shale core further.
2) improve measuring accuracy
The equipment of desorption rate is measured in conventional shale or coal petrography well site now, is mostly to adopt drainage to measure, and need repeatedly observe graduated cylinder or buret meniscus, easily cause personal error.And shale gas site desorption Fufen analyzer of the present invention is by optimizing circuit design, and the pressure transducer of combined high precision carrys out the desorption rate of working sample, makes test result degree of accuracy high.
3) data acquisition and control automatization
The equipment of desorption rate is measured in conventional shale or coal petrography well site now, when data acquisition, manually need carry out typing, waste time and energy.Shale gas site desorption Fufen analyzer of the present invention achieves the robotization of data acquisition.
4) ensure that shale gas desorption gas component is not by air impact
In the present invention, novelty uses He as protection gas, and got rid of by the air separated in cucurbitula, this can avoid the composition of air to sample desorption gas and have an impact.The process of general solution absorption is long, this also avoids the impact of microbial action on desorption gas component.Avoid air simultaneously and chemical reaction is produced to core.And protect under gas at He, be desorption at ambient pressure equally, data can be carried out with the desorption testing apparatus of routine and compare.
5) programming automation collection can be realized
Shale gas site desorption Fufen analyzer of the present invention adopts air-operated solenoid valve, and application program, controls the opening and closing of air-operated solenoid valve, and the robotization that can realize multiple flow process is carried out, and greatly reduces hand labor.
Shale gas site desorption analyser compact overall structure of the present invention, less demanding to experimental situation, be applicable to vehicle-mounted or be close to well site simple building and facilitate on-the-spot test.Its power is less, available generator powered, also can conventional electron.This cover instrument not only can test the air content at shale gas scene, also can test the air content of the on-the-spot core such as tight gas, coal-seam gas, and degree of accuracy is higher.According to the requirement of well site client test, the on-the-spot fast desorption analyser of shale gas can be connected with on-line gas analysis instrument, Synchronization Analysis shale desorption process gas ingredients and change.This can determine the composition of shale gas fast, and studies degassed rule.Shale gas site desorption analyser is equipped with gaseous sample fast-type gas production interface, and the isolated gas of convenient acquisition core sample, for the accurate test analysis in follow-up laboratory, as gas composition analysis, gas isotope analysis etc. in laboratory.Coordinate the technical support in later stage, for enterprise late time data process explanation is provided, gas-bearing property comprehensively analyzes, range of profitability is preferred, the comprehensive technical service that well location demonstration and even the production monitoring of shale gas development phase and fracturing effect analysis etc. are relevant with shale gas exploratory development.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of shale gas site desorption analyser of the present invention;
Fig. 2 is actual measurement gas data and time subduplicate correlationship figure
Wherein: 1, insulation can; 2, helium draft tube; 3, N2 gas piping; 4, retaining valve; 5, the first air-operated solenoid valve; 6, reference cell; 7, the first pressure transducer; 8, the first thermopair; 9, the second air-operated solenoid valve; 10, the 3rd air-operated solenoid valve; 11, cucurbitula is separated; 12, the second pressure transducer; 13, the second thermopair; 14, the 4th air-operated solenoid valve; 15, cylinder manifold; 16, temperature and pressure control; 17,19, retaining valve; 18, vent port; 20, portable gas production interface; 21, temperature controller; 22, host computer; 23, gas outlet; 24, air collecting pipe; 25, cucurbitula heating jacket is separated.
Embodiment:
Following examples further illustrate of the present invention, instead of limitation of the present invention.
Embodiment 1:
As shown in Figure 1, the shale gas site desorption Fufen analyzer of the present embodiment, comprise and separate cucurbitula 11, also comprise reference cell 6 and constant temperature oven 1, be provided with in constant temperature oven 1 and separate cucurbitula 11, reference cell 6, first air-operated solenoid valve 5, second air-operated solenoid valve 9, the 3rd air-operated solenoid valve 10, the 4th air-operated solenoid valve 14 and temperature controller 21, described solution cucurbitula 11 through pipeline respectively with the second air-operated solenoid valve 9, 4th air-operated solenoid valve 14 is connected, 4th other one end of air-operated solenoid valve is connected with gas outlet 23, gas outlet passes the vent port 18 on constant temperature oven, pipeline between solution cucurbitula and the 4th air-operated solenoid valve is also connected with air collecting pipe 24, this air collecting pipe is connected with the portable gas production interface 20 on constant temperature tank wall, gas outlet and air collecting pipe are all also provided with retaining valve 17, 19, described reference cell 6 through pipeline respectively with the first air-operated solenoid valve 5, second air-operated solenoid valve 9 is connected with the 3rd air-operated solenoid valve 10, the first air-operated solenoid valve other end is connected with helium draft tube 2, retaining valve 4 is provided with in helium draft tube, pipeline between the described other end of the 3rd air-operated solenoid valve 10 with the retaining valve 17 on gas outlet to the 4th air-operated solenoid valve 14 is connected, the first described air-operated solenoid valve, second air-operated solenoid valve, 3rd air-operated solenoid valve is connected with cylinder manifold 15 with the 4th air-operated solenoid valve via line, controlled by cylinder manifold, the tracheae of cylinder manifold is connected with N2 gas piping 3, cylinder manifold is connected with temperature and pressure control 16 signal again, described reference cell is provided with the first thermopair 8 and the first pressure transducer 7, described solution cucurbitula is provided with the second thermopair 13 and the second pressure transducer 12, first thermopair 8 is all connected with temperature and pressure control 16 signal with the second thermopair 13, also be provided with host computer 22, described temperature and pressure control 16 is connected with host computer 22 signal, and described solution cucurbitula 11 overcoat has separates cucurbitula heating jacket 25, and this solution cucurbitula heating jacket is connected with temperature controller 21,
Described temperature controller 21 conciliates cucurbitula heating jacket 25 to the temperature in constant temperature oven to control, and it comprises the electric heater unit be located in constant temperature oven, controls the temperature in constant temperature oven by controlling this electric heater unit.
Described temperature and pressure control is the signal that reception cylinder manifold transmits, and first thermopair and the second thermopair signal and be transferred to host computer, and receive the next control signal of host computer transmission, send signal again to cylinder manifold, to control the first air-operated solenoid valve, the second air-operated solenoid valve, the 3rd air-operated solenoid valve and the 4th air-operated solenoid valve;
The data that described host computer comes for receiving the transmission of temperature and pressure control, show data, store and analyze, and under signal to and with temperature and pressure control, it controlled, by host computer display measurement process and result intuitively.
The first described pressure transducer, the second pressure transducer are all connected with temperature and pressure control signal, first pressure transducer and the second pressure transducer transfer data to temperature and pressure control, temperature and pressure control transfers signals to host computer again and shows, temperature controller is connected with host computer, control signal is transferred to temperature controller by host computer, temperature controller is controlled, makes temperature controller heat constant temperature oven or cool, thus control the temperature of constant temperature oven.
Shale gas site desorption Fufen analyzer of the present invention, its workflow is as follows:
1) core is got
When starting to get core, core time T is got in typing
1, after core reaches earth's surface, remove surface mud and residue rapidly, photo, record, with hammer to suitable dimension, is placed into sealing after separating cucurbitula (from shaft bottom to being sealed to the time of separating cucurbitula, shorten, the loss gas calculated like this is more accurate as far as possible), typing Sealing period T
2.
2) helium protection
Separate in cucurbitula except core sample, also have portion of residual air, the gas composition of shale solution sucking-off can be affected.Reason has be this part air itself can to the gas composition of shale solution sucking-off have an impact at three: one; Two is the existence due to oxygen, is conducive to the existence of aerobic microorganisms, may generating portion biogenic gas; Three be composition in air also may with shale core generation chemical reaction, affect the desorption of shale and the composition of gas.
The desorption of conventional shale is arranged, and strengthens sample size, reduces this part residual air amount.But inevitable, always there is partial air to remain in and separate in cucurbitula, the gas composition separating sucking-off is had an impact.
Shale gas site desorption Fufen analyzer of the present invention adopts helium as protection gas; helium is a kind of inert gas, and chemical property torpescence can not produce chemical reaction with shale; and shale is extremely low to the adsorbability of helium itself, the pressure in adsorption tanks will be caused to change because of adsorbability.Shale is under an atmospheric helium atmosphere, and the gas freely separating sucking-off more can the gas composition of accurate representation shale gas.
Select the programs menu of host computer, select " helium protection ".Host computer just sends a signal to and gives temperature and pressure control, control connecting cylinder manifold air-operated solenoid valve, idiographic flow is as follows: after core adds sealable tank sealing, close the 4th air-operated solenoid valve 4, open first, second air-operated solenoid valve 1,2, be filled with the helium of 3 ~ 5bar in sealable tank after, close, open the 4th air-operated solenoid valve 4 again, combination gas of draining, to normal pressure, then closes the 4th air-operated solenoid valve 4.Such circulation 3 ~ 5 times, substantially separates air in cucurbitula and substantially drain, and automatic input now separates the pressure P of cucurbitula
0, temperature T
0.
According to the demand of client, the temperature of above-mentioned two desorption processes can select well liquid temp, reservoir temperature to carry out desorption.
3) well liquid/reservoir temperature desorption
By thermostat, calorstat temperature will be adjusted to well liquid temp, and select data acquisition program, start to gather desorption pressure P
iwith temperature T
idata, this process may be several little of several days.When separating the pressure amplification in cucurbitula and being less than definite value (can arrange voluntarily) of a setting, program stopped, instrument records the temperature P of parsing tank now automatically
1with pressure T
1.
4) desorption gas is gathered
Shale gas site desorption Fufen analyzer be provided with the outlet of gas production easily, the experimental gas that user can be facilitated manually to gather desorption go out.If collection capacity is less, when not affecting desorption rate, can gather, to study the gas sample component change in desorption process.
If gas production is large, advise carrying out gas production after desorption process terminates.With off-the-shelf gas production bag or other gas sample gathering-devices, docking gas production outlet, opens gas production valve, carries out gas production.This process should collection desorption gas sample as much as possible, is used by later stage check analysis, because down-stream can be drained the gas of desorption.
5) solution cucurbitula dead volume is measured
After treating that desorption gas gathers, separate with He test the dead volume V that in cucurbitula, gas occupies.Select instrumentation program menu, select " measure and separate cucurbitula dead volume ".Instrument automatically can carry out measurement and separate cucurbitula dead volume flow process.After EOP (end of program), computer can self registering 3 V values (pendulous frequency of V value can be arranged voluntarily), and automatically obtain mean value V.
Program automatic flow is as follows: the step of first carrying out the protection of above-mentioned (2) helium, makes the desorption gas of solution cucurbitula drain, and be in helium atmosphere, after in the end an evacuation procedure terminates, and record desorb pressure tank P
j1, temperature T
j1.
Open the first air-operated solenoid valve 1, to reference cell pressurization, then close the first air-operated solenoid valve 1, stablize t
1minute, record now reference cell pressure P
c1(helium pressure is between 3.5 ~ 4.5bar), temperature T
c1, t
1can arrange by actual conditions.
Open the second air-operated solenoid valve 2, gas is diffused into solution cucurbitula, after diffusive equilibrium, stablizes t
2minute, close the second air-operated solenoid valve 2, record reference cell pressure P
c1', reference cell temperature T
c1', desorb pressure tank P
j1', separate cucurbitula temperature T
j1'.
By the equation of gas state and amount of substance law of conservation, known
P
c1× V
ginseng/ T
c1+ P
j1× V/T
j1=P
c1' × V
ginseng/ T
c1'+P
j1' × V/T
j1' ... (1)
Be wherein P
c1pressure before reference cell balance, P
c1' be pressure after reference cell balance, P
j1for separating the front pressure of cucurbitula balance, P
j1' for separating the rear pressure of cucurbitula balance, V ginseng is reference cell volume, and V is the volume after sample cell filling sample, T
c1, T
c1' be the temperature that reference cell balances front and back respectively, T
j1, T
j1' be separate the temperature before and after cucurbitula balance respectively.
Open the 4th air-operated solenoid valve 4, be down to normal pressure, close the 4th air-operated solenoid valve 4.Helium reduction valve end pressure is constant, maintain 3.5 ~ 4.5bar, open first, second air-operated solenoid valve 1,2 successively, stabilization time t
3after minute, close first, second air-operated solenoid valve 1,2.After stable, the pressure sensor reading P of cucurbitula separated in record
j2, separate cucurbitula temperature T
j2.
Open the 3rd air-operated solenoid valve 3, reference cell helium is discharged to outside instrument, normal pressure to be down to, and closes the 3rd air-operated solenoid valve 3, record reference cell pressure P
c2, reference cell temperature T
c2.
Open the second air-operated solenoid valve 2, after diffusive equilibrium, close the second air-operated solenoid valve 2, record reference cell pressure P
c2', reference cell temperature T
c2', desorb pressure tank P
j2', separate cucurbitula temperature T
j2'.
In like manner, known
P
c2× V
ginseng/ T
c2+ P
j2× V/T
j2=P
c2' × V
ginseng/ T
c2'+P
j2' × V/T
j2' ... (2)
Be wherein P
c2pressure before reference cell balance, P
c2' be pressure after reference cell balance, P
j2for separating the front pressure of cucurbitula balance, P
j2' for separating the rear pressure of cucurbitula balance, V ginseng is reference cell volume, and V is the volume after sample cell filling sample, T
c2, T
c2' be the temperature that reference cell balances front and back respectively, T
j2, T
j2' be separate the temperature before and after cucurbitula balance respectively.
(1) and (2), simultaneous, can seek knowledge the dead volume V separated in cucurbitula.
Above process repeats 2 times, average 3 of gained V values, namely obtains the dead volume V of confidence level and the high solution cucurbitula of accuracy.
The advantage of the method is, the unnecessary volume demarcating reference cell in advance of instrument, and avoids probe temperature and affect calculating dead volume to reference cell volume change.
6) calculating of desorption tolerance and loss gas
By the temperature and pressure data that process (3) obtains, with correlation parameter, logging data analysis software, even if desorption tolerance data can be obtained, desorption amount with
relevant collection of illustrative plates, and loss tolerance.
The principle that desorption tolerance and loss gas calculate is as follows:
The calculating of desorption tolerance, is calculated by the equation of gas state
Wherein n
i desorptiontime t
itime, shale is separating the desorbed gases amount in cucurbitula
P
ibe desorption process, separate the pressure of cucurbitula;
V separates the dead volume in cucurbitula shared by gas fraction;
P
0and T
ogaseous tension when starting desorption in solution cucurbitula and temperature respectively;
R is gas constant;
Z
iin pressure P
iwith temperature T
itime compressibility factor, z
0be start desorption time helium at P
owith the compressibility factor under To, because the air content of shale is general not high, P
iand P
0differ not obvious, maximum in several barometric pressure range, therefore hypothesis z
i=z
0, can obtain
The last solution absorption tolerance of shale is
Under well liquid temp
Under reservoir temperature
Can be calculated by formula 4, time t
itime sample desorption amount.
The calculating of loss gas
This instrument uses direct method, direct counting loss tolerance, the precision of the method, and from shaft bottom, be sampled to the time being sealed to desorption tank relevant with sample, and the time is shorter, more accurately.
In the ideal case, desorption stage n is started
i desorptionwith
linear, as Fig. 2, we can obtain thus
N
i desorptionfor time t
itime desorption amount;
B is n
i desorptionwith
the slope of linear equation
-n
damagefor n
i desorptionwith
the intercept of linear equation, thus the n asked
damage, namely sample is from being sampled to the gas being sealed to the loss during this period of time of desorption tank from shaft bottom.
Shale air content comprises loss gas, desorption gas and residual gas.When actual well site shale content measurement, except above-mentioned loss gas conciliate adsorbed gas mensuration or except calculating, also need by other a set of equipment----portable tumbling mill, can obtain residual gas data.
Claims (3)
1. a shale gas site desorption Fufen analyzer, comprise solution cucurbitula, it is characterized in that, also comprise reference cell and constant temperature oven, be provided with in constant temperature oven and separate cucurbitula, reference cell, the first air-operated solenoid valve, the second air-operated solenoid valve, the 3rd air-operated solenoid valve, the 4th air-operated solenoid valve and temperature controller, described solution cucurbitula through pipeline respectively with the second air-operated solenoid valve, 4th air-operated solenoid valve is connected, 4th other one end of air-operated solenoid valve is connected with gas outlet, gas outlet passes the vent port on constant temperature oven, pipeline between solution cucurbitula and the 4th air-operated solenoid valve is also connected with air collecting pipe, this air collecting pipe is connected with the portable gas production interface on constant temperature tank wall, gas outlet and air collecting pipe are all also provided with retaining valve, described reference cell through pipeline respectively with the first air-operated solenoid valve, second air-operated solenoid valve is connected with the 3rd air-operated solenoid valve, the first air-operated solenoid valve other end is connected with helium draft tube, retaining valve is provided with in helium draft tube, the other end of the 3rd described air-operated solenoid valve is connected with the pipeline between the retaining valve on gas outlet to the 4th air-operated solenoid valve, the first described air-operated solenoid valve, second air-operated solenoid valve, 3rd air-operated solenoid valve is connected with cylinder manifold with the 4th air-operated solenoid valve via line, controlled by cylinder manifold, cylinder manifold is connected with temperature and pressure control signal again, described reference cell is provided with the first thermopair and the first pressure transducer, described solution cucurbitula is provided with the second thermopair and the second pressure transducer, first thermopair and the second thermopair are all connected with temperature and pressure control signal, also be provided with host computer, described temperature and pressure control is connected with host computer signal, and described solution cucurbitula overcoat has separates cucurbitula heating jacket, and this solution cucurbitula heating jacket is connected with temperature controller,
Described temperature controller conciliates cucurbitula heating jacket to the temperature in constant temperature oven to control;
Described temperature and pressure control is the signal that reception cylinder manifold transmits, and first thermopair and the second thermopair signal and be transferred to host computer, and receive the next control signal of host computer transmission, send signal again to cylinder manifold, to control the first air-operated solenoid valve, the second air-operated solenoid valve, the 3rd air-operated solenoid valve and the 4th air-operated solenoid valve;
The data that described host computer comes for receiving the transmission of temperature and pressure control, show data, store and analyze, and under signal to and with temperature and pressure control, it controlled, by host computer display measurement process and result intuitively.
2. shale gas site desorption Fufen analyzer according to claim 1, it is characterized in that, the first described pressure transducer, the second pressure transducer are all connected with temperature and pressure control signal, first pressure transducer and the second pressure transducer transfer data to temperature and pressure control, temperature and pressure control transfers signals to host computer again and shows, temperature controller is connected with host computer, and control signal is transferred to temperature controller by host computer, controls temperature controller.
3. shale gas site desorption Fufen analyzer according to claim 1, it is characterized in that, described temperature controller comprises the electric heater unit be located in constant temperature oven, controls the temperature in constant temperature oven by controlling this electric heater unit.
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| CN105203428A (en) * | 2015-11-04 | 2015-12-30 | 中国地质科学院地质力学研究所 | Method for determining lost gas content in gas content of shale |
| CN107144625A (en) * | 2017-06-23 | 2017-09-08 | 国家地质实验测试中心 | Gas hydrates drill core light hydrocarbon gas content parses test system and method |
| CN108287095A (en) * | 2018-03-27 | 2018-07-17 | 贵州省煤田地质局实验室 | A kind of portable gas desorption apparatus |
| CN108663498A (en) * | 2017-03-27 | 2018-10-16 | 中国石油化工股份有限公司 | The shale gas site desorption experimental provision and method of high temperature decompression and pressure break |
| CN108761033A (en) * | 2018-05-03 | 2018-11-06 | 中国石油天然气股份有限公司 | The determination method, apparatus and storage medium of the lost gas total content of shale |
| CN109100259A (en) * | 2018-08-29 | 2018-12-28 | 中国科学院广州地球化学研究所 | A kind of shale gas generation resolver |
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| CN112378812A (en) * | 2020-11-06 | 2021-02-19 | 西南石油大学 | Experimental device and method for determining desorption rate of adsorption type shale gas |
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| CN112378812A (en) * | 2020-11-06 | 2021-02-19 | 西南石油大学 | Experimental device and method for determining desorption rate of adsorption type shale gas |
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