CN201778806U - Full-automatic multifunctional isothermal line adsorption and desorption and pollution evaluation experimental instrument - Google Patents
Full-automatic multifunctional isothermal line adsorption and desorption and pollution evaluation experimental instrument Download PDFInfo
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- CN201778806U CN201778806U CN2010202745321U CN201020274532U CN201778806U CN 201778806 U CN201778806 U CN 201778806U CN 2010202745321 U CN2010202745321 U CN 2010202745321U CN 201020274532 U CN201020274532 U CN 201020274532U CN 201778806 U CN201778806 U CN 201778806U
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Abstract
The utility model relates to a full-automatic multifunctional isothermal line adsorption and desorption and pollution evaluation experimental instrument, which belongs to the technical field of coalbed gas drilling, exploring, developing and testing instruments. The instrument comprises an automatic helium gas stop valve, a manually-driven helium gas pressure regulating valve, a booster pump, an automatic electric pressure regulation and pressure release valve, an automatic methane stop valve, a manually-driven methane pressure regulating valve, a two-way check valve, a pressurizing metering pump, a piston container, a sample can, a pneumatic reversing valve, a standard can, a constant temperature oil basin, and the like. The utility model not only can determine the adsorption and desorption isothermal curve of single-component gas, but also can determine multi-component gas, and can obtain the diffusion coefficient of gas in coal, so that the influence of drilling fluid or fracturing fluid to a coal storage layer can be evaluated comprehensively. The problems of simplicity and low degree of automation and accuracy of adsorption and desorption experiment of the conventional coalbed gas are solved. The pressure and the temperature of the experimental instrument are monitored through sensors, and the experimental instrument has the characteristics of reasonable structure, high degree of automation and standardized experiment data, and is convenient to operate.
Description
Technical field:
The utility model relates to a kind of full-automatic multi-functional isotherm adsorption-desorption effect and pollution evaluation experiment instrument, belongs to coal bed gas drilling prospection development and testing Instrument technology field.
Background technology:
Coal petrography is different with conventional reservoir as gas-bearing reservoir, the gas that remaines in the coal seam mainly preserves in the micropore of coal petrography, under the effect of pressure, be adsorbed state rather than compose and deposit with free state, this is the main distinction part that coal bed gas and conventional gas preserve form.Coal petrography has the micropore that has growth, and very big specific area is arranged, so coal petrography has very high gas storage capability.
The coal petrography adsorption isothermal curve has important function in the coalbed methane reservoir Simulation evaluation, on adsorption isotherm, the adsorption-desorption feature that can reflect coal petrography intuitively, can accurately understand the corresponding relation of adsorption-desorption ability and reservoir pressure by adsorption isotherm, combine saturated gassiness degree, the critical desorption pressures of coal bed gas, the reality that to determine coal seam reservoirs with coal seam reservoirs air content, reservoir pressure parameter and can adopt stock number and recovery ratio etc.
At home, the method for testing about the coal petrography desorption isotherm early has research.At present, the adsorption isotherm wire testing method mainly contains two kinds, i.e. volumetric method and gravimetric method.In coal petrography isothermal absorption test, volumetric method is more commonly used, its principle is to ask for the fixed poor gas flow of sample absorption down of level pressure according to Boyle's law, and is converted into the adsorbance of Unit Weight coal under the standard state, asks for the Lan Shi constant and draws isothermal curve according to the Lan Shi equation.
Because present test is not to be used for evaluating reservoir; therefore test condition can not satisfy the technical requirements of reservoir adsorption-desorption test; but coal seam reservoirs protection work runs through each manufacturing process of coal seam reservoirs exploration and development; be one and relate to the multi-disciplinary technology of forming a complete and comprehensive system for collecting real estate fees, above-mentioned apparatus far can not satisfy demand of practical production.Therefore; develop a kind of cbm exploration that is used for and develop the mensuration that the hydrocarbon isothermal curve is separated in needed absorption, estimating composition, drilling fluid or fracturing fluid that coal seam reservoirs is subjected to external condition such as reservoir temperature, coal petrography moisture, adsorbate simultaneously is the task of top priority that the production of coal seam reservoirs protection reality of work needs to the evaluation experimental apparatus of coal seam reservoirs.
Summary of the invention:
The purpose of this utility model is: provide a kind of and be used for the cbm exploration development evaluation and test the mensuration that the hydrocarbon isothermal curve is separated in needed absorption, estimate adsorption-desorption effect of full-automatic multi-functional isotherm and pollution evaluation experiment instrument that composition, drilling fluid or fracturing fluid that coal seam reservoirs is subjected to reservoir temperature, coal petrography moisture, adsorbate influence the external condition of coal seam reservoirs simultaneously.
The utility model is to realize above-mentioned purpose by following technical solution:
This full-automatic multi-functional isotherm adsorption-desorption effect and pollution evaluation experiment instrument are by the helium automatic stop valve, the helium manual pressure regulating valve, the booster pump manual pressure regulating valve, the electronics automatic pressure regulator, booster pump, electronics automatic Regulation relief valve, the main line pressure sensor, the methane automatic stop valve, the methane manual pressure regulating valve, double check valve, pressurised metered pump, the piston container, sample jar, air operated reversing valve, the sample jar pressure sensor, standard can, standard can pressure sensor and constant temperature oil sump are formed, and it is characterized in that: the helium automatic stop valve links to each other with the helium manual pressure regulating valve, methane automatic stop valve and methane manual pressure regulating valve are connected with double check valve respectively after linking to each other; Double check valve connects the left air inlet port that increases pump, and the right gas outlet of booster pump is connected with electronics automatic Regulation relief valve, and electronics automatic Regulation relief valve is connected with the main line pressure sensor by the air feed trunk line; Electronics automatic pressure regulator and booster pump manual pressure regulating valve are housed on the booster pump; Be manufactured with the gas outlet on the described air feed trunk line, the gas outlet is connected with test cell.
Described test cell is made up of sample jar, air operated reversing valve, sample jar pressure sensor, standard can, standard can pressure sensor; The air inlet port of air operated reversing valve is connected with the air feed trunk line, and the intermediary interface of air operated reversing valve connects standard can, and standard can is connected with the standard can pressure sensor by pipeline; The gas outlet of air operated reversing valve is connected with sample jar, and sample jar is connected with the sample jar pressure sensor by pipeline.
Described sample jar is connected with the drilling fluid contamination unit of being made up of pressurised metered pump and piston container by an aciculiform stop valve, and pressurised metered pump is connected by the bottom of snap joint with the piston container.
The utility model beneficial effect compared with prior art is:
This full-automatic multi-functional isotherm adsorption-desorption effect and pollution evaluation experiment instrument are rational in infrastructure, advanced in performance, the automaticity height, and pressure and temperature is monitored by high-precision sensor.This experiment instrument not only can be measured the adsorption-desorption isothermal curve of single-component gas, can also measure the adsorption isothermal curve of multicomponent gas, and can ask for the diffusion coefficient of gas in the coal.Coal seam reservoirs desorption ability recovery value was tested before and after this experiment instrument can carry out drilling fluid contamination simultaneously, and overall merit drilling fluid or fracturing fluid are to the influence of coal seam reservoirs.Solved the not high shortcoming of unicity, automaticity and the degree of accuracy of present coal bed gas adsorption-desorption experiment, had clear process, characteristics such as easy to operate, experiment software modularization, experimental data standardization.
Description of drawings
Accompanying drawing is full-automatic multi-functional isotherm absorption desorption and pollution evaluation experiment instrument.
Among the figure: 1, helium automatic stop valve, 2, helium manual pressure regulating valve, 3, the booster pump manual pressure regulating valve, 4, the electronics automatic pressure regulator, 5, booster pump, 6, electronics automatic Regulation relief valve, 7, the main line pressure sensor, 8, the methane automatic stop valve, 9, methane manual pressure regulating valve, 10, double check valve, 11, pressurised metered pump, 12, the piston container, 13, sample jar, 14, air operated reversing valve, 15, the sample jar pressure sensor, 16, standard can, 17, standard can pressure sensor, 18, constant temperature oil sump, 19, the air feed trunk line, 20, the aciculiform stop valve.
The specific embodiment:
This full-automatic multi-functional isotherm adsorption-desorption effect and pollution evaluation experiment instrument are by helium automatic stop valve 1, helium manual pressure regulating valve 2, booster pump manual pressure regulating valve 3, electronics automatic pressure regulator 4, booster pump 5, electronics automatic Regulation relief valve 6, main line pressure sensor 7, methane automatic stop valve 8, methane manual pressure regulating valve 9, double check valve 10, pressurised metered pump 11, piston container 12, sample jar 13, air operated reversing valve 14, sample jar pressure sensor 15, standard can 16, standard can pressure sensor 17, constant temperature oil sump 18, air feed trunk line 19, aciculiform stop valve 20 is formed.Helium links to each other with helium manual pressure regulating valve 2 by helium automatic stop valve 1, and helium manual pressure regulating valve 2 links to each other with the import of double check valve 10.Methane automatic stop valve 8 links to each other with methane manual pressure regulating valve 9, and methane manual pressure regulating valve 9 links to each other with the import of double check valve 10.The outlet of double check valve 10 is connected to the left air inlet port of booster pump 5, the right gas outlet of booster pump 5 links to each other with the import of electronics automatic Regulation relief valve 6, the logical atmosphere of an outlet of electronics automatic Regulation relief valve 6, another outlet is connected with air feed trunk line 19, and a main line pressure sensor 7 is housed on the air feed trunk line 19.The operation of booster pump 5 is by 4 controls of electronics automatic pressure regulator, and electronics automatic pressure regulator 4 is connected with the outlet of booster pump manual pressure regulating valve 3, and the import of booster pump manual pressure regulating valve 3 is connected with compressed air source or source nitrogen.Air feed trunk line 19 has four gas outlets, can be connected with four test cells, four test cells can be tested simultaneously, also can test separately, four test cells are placed on the constant temperature of heating in the constant temperature oil sump 18 simultaneously, the temperature of constant temperature oil sump 18 can be controlled in the scope of room temperature to 100 ℃ ± 0.2 ℃, and the temperature of constant temperature oil sump 18 is by function software and computer control (referring to accompanying drawing).
Above-mentioned test cell is made up of sample jar 13, air operated reversing valve 14, sample jar pressure sensor 15, standard can 16, standard can pressure sensor 17, the air inlet port of air operated reversing valve 14 is connected with air feed trunk line 19, the intermediary interface of air operated reversing valve 14 is connected with standard can 16, standard can 16 is connected with standard can pressure sensor 17 by pipeline, the gas outlet of air operated reversing valve 14 is connected with sample jar 13, and sample jar 13 is connected with sample strain sensor 15 by pipeline.
Sample jar 13 is connected with the drilling fluid contamination unit of being made up of pressurised metered pump 11 and piston container 12 by an aciculiform stop valve 20, pressurised metered pump 11 is connected by the bottom of snap joint with piston container 12, floating piston is equipped with in the centre of piston container 12, the top splendid attire drilling fluid of piston container 12, pressurised metered pump 11 can be under sample jar 13 conditions with pressure be injected into drilling fluid in the sample jar 13 coal sample are polluted.
Described double check valve 10 is double one way valves that reset certainly, there are two air inlet ports to be connected with the manual pressure regulating valve of two groups of sources of the gas respectively on it, the gas outlet is connected with the air inlet port of booster pump 5, and the two-phase source of the gas can not ganged up mutually during work, can only flow out from the gas outlet and the unidirectional pressurize of energy.Described air operated reversing valve 14 is connected by flexible pipe with electromagnetic flow valve, by computer and software control, air operated reversing valve 14 adopts the design of bivalve needle construction, control by the electromagnetic flow valve air feed, can finish successively air feed trunk line 19 to standard can 16 inflation, standard can 16 to sample jar 13 inflations, sample jar 13 to standard can 16 lose heart, the gas recycle processes of standard can 16 in the whole adsorption-desorption process that air feed trunk line 19 loses heart, and the free volume of the volumetric calibration of standard can 16 and sample jar 13 is demarcated overall process.
Described helium automatic stop valve 1, methane automatic stop valve 8, electronics automatic pressure regulator 4, electronics automatic Regulation relief valve 6, standard can pressure sensor 17, sample jar pressure sensor 15 are connected with data acquisition board (not drawing among the figure) by electric wire, described air operated reversing valve 14 is connected with electromagnetic flow valve by pipeline, electromagnetic flow valve is connected with data acquisition board by electric wire, and data acquisition board is connected with computer (not drawing among the figure) by the R232 interface.
Before the experiment, earlier the known steel billet of volume is put in the sample jar 13, afterwards according to Boyle's law, with the settle the standard total measurement (volume) of jar 16 and sample jar 13 of helium.Triplicate is done initial calibration under laboratory temperature, so that experimental error is reduced to minimum.The precision that total measurement (volume) is measured generally is scholar 0.03cm.
Instrument leak detection and free volume are demarcated.Coal sample through Industrial Analysis is sealed in the sample jar 13, at first start helium manual pressure regulating valve 2 and fill helium, open on the booster pump 5 control pipelines booster pump manual pressure regulating valve 3, regulate electronics automatic pressure regulator 4, make the operating pressure of booster pump 5 add to more than the high test pressures 2MPa, inspection has the leakproof phenomenon, emits gas behind the leakproof.Clean tank body with helium, the process of demarcating with helium will repeat four times, and with the free volume of determining sample jar 13 and the density of coal, the free volume measure error is generally in ± 0.03cm.
The isothermal adsorption experiment: at first clean standard can 16 with high-purity methane in the experimentation, the electronics automatic pressure regulator 4 of regulating booster pump 5 fills methane gas, makes the steady pressure of the pressure of standard can 16 greater than this stage estimation.Open two air operated reversing valves 14 between the jar, its pressure is equated.Software writes down the pressure of different time in all stage automatically.Till the 30min internal pressure changes less than 0.7kPa.Pressurize gradually until final pressure, be pressed onto greater than the adsorption isotherm in the reservoir pressure scope from an atmosphere with definite.
Drilling fluid contamination experiment: pressurised metered pump 11 is filled displacing fluid, and to make plunger fall back on pointer be 0 position, floating piston in the middle of the piston container 12 is pressed onto the bottom, the drilling fluid piston container 12 of packing into preparation, cover enclosing cover and connect snap joint, clockwise rotate the handle pressurization of pressurised metered pump 11, equal the pressure of sample jar 13 when the pressure meter show value after, open aciculiform stop valve 20, continue the volume that pressurization and record are injected into the drilling fluid of sample jar 13 this moment, after being injected into certain volume, close aciculiform stop valve 20, allow drilling fluid contamination coal sample 12 hours.
The isothermal desorption experiment: by the desorption experiment pressure of setting, software starts electronics automatic Regulation relief valve 6 and air operated reversing valve 14 pressure releases automatically, and writes down temperature, time and the pressure parameter of isothermal desorption under each pressure spot equilibrium state.When pressure is let out (absolute pressure is 1 atmospheric pressure) when being 0, the isothermal desorption experiment is finished.
The result calculates and estimates.Software was according to the experiment parameter of record after experiment was finished, automatically variation, Lang Gemiuer absorption constant and the pressure constant of gas adsorption capacity under the density of coal, the stage pressure in the gas volume coefficient of methane, the experiment cylinder under the experiment with computing temperature condition are drawn the relation curve of adsorbance and pressure under the isothermy automatically; Automatically draw that this stage gas body burden changes and change the diagnosis curve map of derivative, the effective diffusion cofficient in a pressure stage of estimation with respect to the gas content of duration; Coal sample of the same race is subjected to the adsorbance of drilling fluid contamination front and back and the Changing Pattern and the coal seam reservoirs desorption ability recovery value of pressure dependence curve under the comparative evaluation same experimental conditions, and overall merit drilling fluid or fracturing fluid are to the influence of coal seam reservoirs.
Claims (3)
1. full-automatic multi-functional isotherm adsorption-desorption effect and pollution evaluation experiment instrument, it is by helium automatic stop valve (1), helium manual pressure regulating valve (2), booster pump manual pressure regulating valve (3), electronics automatic pressure regulator (4), booster pump (5), electronics automatic Regulation relief valve (6), main line pressure sensor (7), methane automatic stop valve (8), methane manual pressure regulating valve (9), double check valve (10), pressurised metered pump (11), piston container (12), sample jar (13), air operated reversing valve (14), sample jar pressure sensor (15), standard can (16), standard can pressure sensor (17) and constant temperature oil sump (18) are formed, and it is characterized in that: helium automatic stop valve (1) links to each other with helium manual pressure regulating valve (2), methane automatic stop valve (8) and methane manual pressure regulating valve (9) are connected with double check valve (10) respectively after linking to each other; Double check valve (10) connects the left air inlet port that increases pump (5), and the right gas outlet of booster pump (5) is connected with electronics automatic Regulation relief valve (6), and electronics automatic Regulation relief valve (6) is connected with main line pressure sensor (7) by air feed trunk line (19); Electronics automatic pressure regulator (4) and booster pump manual pressure regulating valve (3) are housed on the booster pump (5); Be manufactured with the gas outlet on the described air feed trunk line (19), the gas outlet is connected with test cell.
2. full-automatic multi-functional isotherm adsorption-desorption effect according to claim 1 and pollution evaluation experiment instrument is characterized in that: described test cell is made up of sample jar (13), air operated reversing valve (14), sample jar pressure sensor (15), standard can (16), standard can pressure sensor (17); The air inlet port of air operated reversing valve (14) is connected with air feed trunk line (19), and the intermediary interface of air operated reversing valve (14) connects standard can (16), and standard can (16) is connected with standard can pressure sensor (17) by pipeline; The gas outlet of air operated reversing valve (14) is connected with sample jar (13), and sample jar (13) is connected with sample jar pressure sensor (15) by pipeline.
3. full-automatic multi-functional isotherm adsorption-desorption effect according to claim 2 and pollution evaluation experiment instrument, it is characterized in that: described sample jar (13) is connected with the drilling fluid contamination unit of being made up of pressurised metered pump (11) and piston container (12) by an aciculiform stop valve (20), and pressurised metered pump (11) is connected by the bottom of snap joint with piston container (12).
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| CN2010202745321U CN201778806U (en) | 2010-07-26 | 2010-07-26 | Full-automatic multifunctional isothermal line adsorption and desorption and pollution evaluation experimental instrument |
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| CN2010202745321U CN201778806U (en) | 2010-07-26 | 2010-07-26 | Full-automatic multifunctional isothermal line adsorption and desorption and pollution evaluation experimental instrument |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536222A (en) * | 2012-01-09 | 2012-07-04 | 中国石油天然气集团公司 | Analog evaluation device for evaluating damage of coalbed methane reservoir polluted by external fluid |
| CN103018132A (en) * | 2012-12-21 | 2013-04-03 | 中煤科工集团重庆研究院 | Dynamic deformation characteristic testing method in coal absorption and desorption process |
| CN103063544A (en) * | 2012-11-11 | 2013-04-24 | 中国石油大学(华东) | Device and method for evaluating adsorption and desorption properties of modularized coal rock |
| CN103115844A (en) * | 2013-01-28 | 2013-05-22 | 中国石油大学(华东) | Measuring method for isothermal adsorption/desorption curve of coaly shale |
| CN103149118A (en) * | 2013-01-28 | 2013-06-12 | 中国石油大学(华东) | Carbonaceous shale isothermal adsorption/desorption experimental device |
| CN113834707A (en) * | 2021-09-15 | 2021-12-24 | 广州海洋地质调查局 | Experimental preparation device for methane stock solution for measuring Henry constant standard |
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2010
- 2010-07-26 CN CN2010202745321U patent/CN201778806U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536222A (en) * | 2012-01-09 | 2012-07-04 | 中国石油天然气集团公司 | Analog evaluation device for evaluating damage of coalbed methane reservoir polluted by external fluid |
| CN102536222B (en) * | 2012-01-09 | 2015-12-09 | 中国石油天然气集团公司 | The simulating-estimating device of damage of coalbed methane reservoir polluted by external fluid |
| CN103063544A (en) * | 2012-11-11 | 2013-04-24 | 中国石油大学(华东) | Device and method for evaluating adsorption and desorption properties of modularized coal rock |
| CN103018132A (en) * | 2012-12-21 | 2013-04-03 | 中煤科工集团重庆研究院 | Dynamic deformation characteristic testing method in coal absorption and desorption process |
| CN103115844A (en) * | 2013-01-28 | 2013-05-22 | 中国石油大学(华东) | Measuring method for isothermal adsorption/desorption curve of coaly shale |
| CN103149118A (en) * | 2013-01-28 | 2013-06-12 | 中国石油大学(华东) | Carbonaceous shale isothermal adsorption/desorption experimental device |
| CN113834707A (en) * | 2021-09-15 | 2021-12-24 | 广州海洋地质调查局 | Experimental preparation device for methane stock solution for measuring Henry constant standard |
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Granted publication date: 20110330 Termination date: 20110726 |