CN103163059A - Coal rock porosity, permeability and electroacoustic stress-strain combined measuring device under overburden pressure and heating - Google Patents
Coal rock porosity, permeability and electroacoustic stress-strain combined measuring device under overburden pressure and heating Download PDFInfo
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- CN103163059A CN103163059A CN2013101211842A CN201310121184A CN103163059A CN 103163059 A CN103163059 A CN 103163059A CN 2013101211842 A CN2013101211842 A CN 2013101211842A CN 201310121184 A CN201310121184 A CN 201310121184A CN 103163059 A CN103163059 A CN 103163059A
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Abstract
The invention relates to a coal rock porosity, permeability and electroacoustic stress-strain combined measuring device under overburden pressure and heating. The coal rock porosity, permeability and electroacoustic stress-strain combined measuring device is provided with an incubator, wherein a supporting rod, a comprehensive gripper, a pushing platform, a cushion block and a coal sample are arranged in the incubator, the upper part of the comprehensive gripper is provided with an experimental oil pipe, the experimental oil pipe is inserted into the coal sample, the upper part of the experimental oil pipe is sequentially connected with an electromagnetic valve e, a standard chamber, a pressure gauge b, an electromagnetic valve c, a barometric regulator and a gas booster pump, an inlet of the gas booster pump is communicated with a gas cylinder through a lead wire, and the upper part of the experimental oil pipe is sequentially connected with a pressure gauge c, an electromagnetic valve d, a water pressure regulator, a liquid booster pump and a water tank. The coal rock porosity, permeability, and electroacoustic stress-strain combined measuring device can be used for effectively simulating the high temperature and high pressure geological environment under deep complicated formation conditions to obtain the porosity, the gas-water relative permeability, a stress-strain curve, the resistivity and the acoustic velocity of the coal rock sample under the same experimental conditions, thus effectively saving the sample, improving the accuracy and the comparability of experimental data, and bringing the great convenience for scientific research.
Description
Technical field
the present invention relates to a kind of measurement mechanism of coal petrography parameter, especially can be on same experiment condition a kind of covering that once property obtains factor of porosity, Gas And Water Relative Permeability, stress-strain diagram, resistivity and the acoustic velocity of coal petrography sample press the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device.
Background technology
at present, domestic instrument can be seen the QSXS-Ш type Gas And Water Relative Permeability analyzer of Nantong Feiyu Petroleum Science and Technology Development Co., Ltd.'s exploitation, and it can measure the coalbed gas_water relative permeability under the different temperatures confined pressure; In Shandong, the high temperature of stone great Shi instrument Science and Technology Ltd. exploitation covers and presses hole penetration test instrument can simulate the deep formation high-temperature and high-pressure conditions, the coal petrography porosity and permeability under the test corresponding conditions; The full-automatic analyzer of coal petrography electro mechanical parameter of Hai'an, Nantong City oil scientific research Instrument Ltd. exploitation can be measured coal petrography resistivity and compressional wave under formation condition, shear wave velocity.When these several surveying instruments are worked separately, though have his own strong points, complex operation while using, easy break-down, bring very big inconvenience to research work, and can't realize on-line monitoring simultaneously, makes the scientific research data be difficult to coupling analysis.While for same sample test different parameters, at the dress sample with in unloading the sample process, is easily caused the sample infringement at different instruments, causes test result to be difficult to mutually contrast and confirmation.In addition, coal petrography porosity-permeability-ess-strain-sound wave-resistivity translocation device so far there are no report and off-the-shelf equipment sale.
Summary of the invention
can't realize the problem of coal petrography porosity-permeability-ess-strain-sound wave-resistivity translocation in order to solve existing measurement mechanism, the invention provides a kind of covering presses the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device, this device can effectively be simulated the geologic media of High Temperature High Pressure under the complex stratum condition of deep, utilize the standard chamber method, gas meter, liquid flowmeter, stress-strain gage, resistivity meter and acoustic emission instrument, obtain the factor of porosity of coal petrography sample under same experiment condition, Gas And Water Relative Permeability, stress-strain diagram, resistivity and acoustic velocity, effectively saved sample, experimental data precision and contrast property have been increased, improved work efficiency, to research work, bring great convenience.
the technical solution adopted for the present invention to solve the technical problems is: this covers presses the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device to be provided with a constant temperature oven, the bottom of constant temperature oven is provided with passive base, the constant temperature oven bottom is provided with two support bars straight up, the top of support bar is provided with comprehensive clamper, be provided with the propelling platform in comprehensive clamper, advance the top of platform to be provided with cushion block and coal sample, the center of coal sample has embedded the ess-strain sheet, wrap the pressure-bearing wall with gum cover around coal sample, the two ends up and down of comprehensive clamper are connecting resistivity meter and sonic apparatus by the circuit line, comprehensive clamper bottom connects the axial compression auto-loading system, the side of comprehensive clamper is connecting the confined pressure auto-loading system, the top of comprehensive clamper is provided with the experiment oil pipe, insert in coal sample the bottom of experiment oil pipe, the top of experiment oil pipe is connecting solenoid valve e successively by the wire I, standard chamber, tensimeter b, solenoid valve c, barostat and gas boosting pump, the import that described gas increases pump is connected with gas cylinder by wire, wire is provided with tensimeter a and solenoid valve b, the wire that connects gas cylinder is also connecting the gas humidification device by solenoid valve a, the top of experiment oil pipe is connecting tensimeter c, solenoid valve d, hydrostate, liquid booster pump and water tank successively by the wire II, the bottom of described comprehensive clamper is connecting solenoid valve f and gas-liquid separator successively, gas-liquid separator is connected with gas meter and liquid flowmeter, associated line between gas-liquid separator and gas meter is provided with tensimeter d, and the associated line between gas-liquid separator and liquid flowmeter is provided with tensimeter e, the bottom of described comprehensive clamper is connected with stress-strain gage, the bottom of described constant temperature oven is connected with computing machine, and computing machine is concentrated acquisition and processing to the data of measuring.
this covers, and to press the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation measurement device using method as follows:
1. sample preparation and installation
cylindrical coal sample is made
specification, comprehensive clamper is adjusted to upper and lower upright position, put cushion block on the propelling platform of axial compression auto-loading system, coal sample is placed on above cushion block, the ess-strain sheet is attached to respectively the vertical and horizontal both direction of coal sample, start the axial compression auto-loading system coal sample and cushion block are sent in comprehensive clamper and held out against, gum cover clamps coal sample under the driving effect of confined pressure auto-loading system, and the process that coal sample is installed has just completed.
the test of coal petrography factor of porosity
this device is to utilize gas isothermal transformation theory, the size of test coal sample factor of porosity under certain temperature and confined pressure condition, and test gas is used
gas; Concrete operation step is as follows:
1) at first utilize specific pore degree calibrated bolck to carry out porosity correction, measure the volume of standard chamber to the pipeline of comprehensive this section of clamper
;
2) temperature of regulating constant incubator, utilize axial compression auto-loading system and confined pressure auto-loading system to load corresponding axial compression and confined pressure as required;
3) open gas cylinder, solenoid valve b, solenoid valve c, shut electromagnetic valve a, solenoid valve d, solenoid valve e, solenoid valve f, gas flows into standard chamber, the now value of computer recording tensimeter b through gas boosting pump, barostat
;
4) shut electromagnetic valve c, open solenoid valve e and make gas enter the rock core of comprehensive clamper, after the value stabilization of tensimeter b, and the computer recording force value
;
5) the computing machine utilization collects
with
value utilize the gas boyle law to calculate the size of factor of porosity under this temperature, pressure condition; Computing Principle is as follows:
following equation of equilibrium is arranged in this measuring process:
factor of porosity just can be expressed as:
the Gas And Water Relative Permeability test
this device is to utilize the oil and gas industry standard SY/T 5345-1999 of People's Republic of China (PRC) steady state method test Gas And Water Relative Permeability, learning coal sample turnover implication, water pressure, work off one's feeling vent one's spleen, calculate under the condition of the length of discharge, coal sample and sectional area the size of the air water two-phase relative permeability of coal sample under certain temperature and pressure condition; Test gas is used
gas, liquid is used simulated formation water, and concrete operations are as follows:
according to darcy straight line seepage flow law, the single-phase permeability of gas and liquid can mean with following formula,
wherein
for perm-plug method, the mD of unit;
for atmospheric pressure, units MPa;
for gas flow under atmospheric pressure, Unit/mL/s;
for the viscosity measuring gas at temperature, the mPas of unit;
for sample length, the cm of unit;
for sample in cross section is amassed, unit
;
for sample inlet pressure, units MPa;
for the single-phase permeability of water, the mD of unit;
for discharge under atmospheric pressure, Unit/mL/s;
for the viscosity measuring water at temperature, the mPas of unit;
wherein
relative permeability for water;
for the effective permeability of water, the mD of unit;
for absolute permeability, the mD of unit;
relative permeability for gas;
for the effective permeability of gas, the mD of unit;
for the sample water saturation, the % of unit;
for the aqueous specimen quality in arbitrary moment, the g of unit;
for the dry-eye disease quality, the g of unit;
for the density measuring the simulated formation water of saturated sample at temperature, unit
;
for the quality after sample saturation simulation local water, the g of unit;
for the sample gas saturation, the % of unit; Absolute permeability wherein
pass into
single-phase permeability during gas.
) by comprehensive clamper 90-degree rotation to both ends horizontal, other link pipelines also rotate thereupon;
2) open gas cylinder, solenoid valve b, gas boosting pump, liquid booster pump, solenoid valve c, solenoid valve d, solenoid valve e, solenoid valve f, inject sample according to a certain percentage by air water;
3) temperature of regulating constant incubator, utilize axial compression auto-loading system and confined pressure auto-loading system to load corresponding axial compression and confined pressure as required;
4) flow while stablize until temperature, axial compression confined pressure and the fluid of constant temperature oven, measure and pass in and out that implication, water pressure are gentle, discharge and aqueous specimen quality;
5) computing machine calculates and is processed according to the formula formula, obtains the value of gas, water phase permeability.
the coal petrography stress-strain test
test condition according to above factor of porosity and Gas And Water Relative Permeability, coal sample can produce corresponding ess-strain under axial compression auto-loading system and confined pressure auto-loading system institute's on-load pressure and constant temperature oven heating degree, and the data of observation stress-strain gage show also record in time.
the coal petrography resistivity measurement
1) open resistivity meter, test lead is arranged on to the two ends of comprehensive clamper, click computing machine resistivity monitoring software;
2) pass into gas to comprehensive clamper, now open gas cylinder, gas boosting pump, solenoid valve b, solenoid valve c, solenoid valve e, shut electromagnetic valve a, solenoid valve d, solenoid valve f;
3) temperature of regulating constant incubator, utilize axial compression auto-loading system and confined pressure auto-loading system to load corresponding axial compression and confined pressure as required;
4) until temperature, the axial compression confined pressure of constant temperature oven and pass into the tensimeter b of gas stable after, the variation of monitoring resistor rate, record after the value stabilization of resistivity.
the coal petrography sonic test
sonic test mainly utilizes the ultrasonic pulse transmission beam method, and the compressional wave under measurement different temperatures pressure condition and shear wave, along the time of coal sample propagation, finally calculate velocity of longitudinal wave and the shear wave velocity of coal sample, and testing procedure is as follows:
1) open sonic apparatus, test lead is arranged on to the two ends of comprehensive clamper, click the computing machine acoustic emission and receive control software;
2) close gas cylinder, gas boosting pump, liquid booster pump, solenoid valve a, solenoid valve b, solenoid valve c, solenoid valve d, solenoid valve e and solenoid valve f;
3) temperature of regulating constant incubator, utilize axial compression auto-loading system and confined pressure auto-loading system to load corresponding axial compression and confined pressure as required;
4), after the temperature of constant temperature oven, axial compression confined pressure steady, click sound wave controlled software on computing machine and launch and receive compressional wave and shear wave;
5) the compressional wave shear wave mistiming that the computing machine basis transmits and receives, and the length of coal sample, calculate velocity of longitudinal wave and the shear wave velocity of this coal sample under this temperature, pressure condition, and then calculate when elastic modulus of Poisson according to the mechanics formula.
the invention has the beneficial effects as follows, this device can effectively be simulated the geologic media of High Temperature High Pressure under the complex stratum condition of deep, utilize standard chamber method, gas meter, liquid flowmeter, stress-strain gage, resistivity meter and acoustic emission instrument, obtain factor of porosity, Gas And Water Relative Permeability, stress-strain diagram, resistivity and the acoustic velocity of coal petrography sample under same experiment condition, effectively save sample, increased experimental data precision and contrast property, be conducive to the data coupling analysis, improved work efficiency, brought great convenience to research work.
The accompanying drawing explanation
below in conjunction with accompanying drawing and example, the invention will be further described.
fig. 1 is structural principle schematic diagram of the present invention.
in Fig. 1, 1. gas cylinder, 2. tensimeter a, 3. solenoid valve a, 4. solenoid valve b, 5. barostat, 6. hydrostate, 7. solenoid valve c, 8. solenoid valve d, 9. tensimeter b, 10. tensimeter c, 11. standard chamber, 12. solenoid valve e, 13. gum cover, 14. coal sample, 15. experiment oil pipe, 16. comprehensive clamper, 17. constant temperature oven, 18. resistivity meter, 19. sonic apparatus, 20. tensimeter d, 21. tensimeter e, 22. gas meter, 23. liquid flowmeter, 24. computing machine, 25. stress-strain gage, 26. gas-liquid separator, 27. solenoid valve f, 28. base, 29. clamper support bar, 30. axial compression auto-loading system, 31. confined pressure auto-loading system, 32. propelling platform, 33. cushion block, 34. ess-strain sheet, 35. gas boosting pump, 36. liquid booster pump, 37. gas humidification device, 38. water tank.
Embodiment
in Fig. 1, this covers presses the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device to be provided with a constant temperature oven 17, the bottom of constant temperature oven 17 is provided with passive base 28, constant temperature oven 17 bottoms are provided with two support bars 29 straight up, the top of support bar 29 is provided with comprehensive clamper 16, be provided with and advance platform 32 in comprehensive clamper 16, advance the top of platform 32 to be provided with cushion block 33 and coal sample 14, coal sample 14 center has embedded ess-strain sheet 34, wrap the pressure-bearing wall with gum cover 13 around coal sample 14, the two ends up and down of comprehensive clamper 16 are connecting resistivity meter 18 and sonic apparatus 19 by the circuit line, comprehensive clamper 16 bottoms connect axial compression auto-loading system 30, the side of comprehensive clamper 16 is connecting confined pressure auto-loading system 31, the top of comprehensive clamper 16 is provided with experiment oil pipe 15, insert in coal sample 14 bottom of experiment oil pipe 15, the top of experiment oil pipe 15 is connecting solenoid valve e12 successively by the wire I, standard chamber 11, tensimeter b9, solenoid valve c7, barostat 5 and gas boosting pump 35, the import that described gas increases pump 35 is connected with gas cylinder 1 by wire, wire is provided with tensimeter a2 and solenoid valve b4, the wire that connects gas cylinder 1 is also connecting gas humidification device 37 by solenoid valve a3, the top of experiment oil pipe 15 is connecting tensimeter c10, solenoid valve d8, hydrostate 6, liquid booster pump 36 and water tank 38 successively by the wire II, the bottom of described comprehensive clamper 16 is connecting solenoid valve f27 and gas-liquid separator 26 successively, gas-liquid separator 26 is connected with gas meter 22 and liquid flowmeter 23, associated line between gas-liquid separator 26 and gas meter 22 is provided with tensimeter d20, and the associated line between gas-liquid separator 26 and liquid flowmeter 23 is provided with tensimeter e21, the bottom of described comprehensive clamper 16 is connected with stress-strain gage 25, the bottom of described constant temperature oven 17 is connected with computing machine 24, and the data of 24 pairs of measurements of computing machine are concentrated acquisition and processing.
this covers, and to press the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation measurement device using method as follows:
1. sample preparation and installation
the test of coal petrography factor of porosity
this device is to utilize gas isothermal transformation theory, the size of test coal sample 14 factor of porosity under certain temperature and confined pressure condition, and test gas is used
gas; Concrete operation step is as follows:
at first utilize specific pore degree calibrated bolck to carry out porosity correction, measure the volume of standard chamber 11 to the pipeline of comprehensive clamper 16 these sections
;
the temperature of regulating constant incubator 17, utilize axial compression auto-loading system 30 and confined pressure auto-loading system 31 to load corresponding axial compression and confined pressure as required;
open gas cylinder 1, solenoid valve b4, solenoid valve c7, shut electromagnetic valve a3, solenoid valve d8, solenoid valve e12, solenoid valve f27, gas flows into standard chamber 11, the value of this computer-chronograph 24 recording manometer b9 through gas boosting pump 35, barostat 5
;
shut electromagnetic valve c7, open solenoid valve e12 and make gas enter the rock core of comprehensive clamper 16, and after the value stabilization of tensimeter b9, computing machine 24 records force value
;
the computing machine utilization collects
with
value utilize the gas boyle law to calculate the size of factor of porosity under this temperature, pressure condition; Computing Principle is as follows:
following equation of equilibrium is arranged in this measuring process:
factor of porosity just can be expressed as:
the Gas And Water Relative Permeability test
this device is to utilize the oil and gas industry standard SY/T 5345-1999 of People's Republic of China (PRC) steady state method test Gas And Water Relative Permeability, learning coal sample 14 turnover implication, water pressures, work off one's feeling vent one's spleen, calculate under the condition of the length of discharge, coal sample 14 and sectional area the size of the air water two-phase relative permeability of coal sample 14 under certain temperature and pressure condition; Test gas is used
gas, liquid is used simulated formation water, and concrete operations are as follows:
according to darcy straight line seepage flow law, the single-phase permeability of gas and liquid can mean with following formula,
wherein
for perm-plug method, the mD of unit;
for atmospheric pressure, units MPa;
for gas flow under atmospheric pressure, Unit/mL/s;
for the viscosity measuring gas at temperature, the mPas of unit;
for sample length, the cm of unit;
for sample in cross section is amassed, unit
;
for sample inlet pressure, units MPa;
for the single-phase permeability of water, the mD of unit;
for discharge under atmospheric pressure, Unit/mL/s;
for the viscosity measuring water at temperature, the mPas of unit;
wherein
relative permeability for water;
for the effective permeability of water, the mD of unit;
for absolute permeability, the mD of unit;
relative permeability for gas;
for the effective permeability of gas, the mD of unit;
for the sample water saturation, the % of unit;
for the aqueous specimen quality in arbitrary moment, the g of unit;
for the dry-eye disease quality, the g of unit;
for the density measuring the simulated formation water of saturated sample at temperature, unit
;
for the quality after sample saturation simulation local water, the g of unit;
for the sample gas saturation, the % of unit; Absolute permeability wherein
pass into
single-phase permeability during gas.
) by comprehensive clamper 16 90-degree rotations to both ends horizontal, other link pipelines also rotate thereupon;
2) open gas cylinder 1, solenoid valve b4, gas boosting pump 35, liquid booster pump 36, solenoid valve c7, solenoid valve d8, solenoid valve e12, solenoid valve f27, inject sample according to a certain percentage by air water;
3) temperature of regulating constant incubator 17, utilize axial compression auto-loading system 30 and confined pressure auto-loading system 31 to load corresponding axial compression and confined pressure as required;
4) flow while stablize until temperature, axial compression confined pressure and the fluid of constant temperature oven 17, measure and pass in and out that implication, water pressure are gentle, discharge and aqueous specimen quality;
5) computing machine calculates and is processed according to the formula formula, obtains the value of gas, water phase permeability.
the coal petrography stress-strain test
test condition according to above factor of porosity and Gas And Water Relative Permeability, coal sample 14 can produce corresponding ess-strain under axial compression auto- loading system 30 and 31 on-load pressures of confined pressure auto-loading system and constant temperature oven 17 heating degrees, and the data of observation stress-strain gage 25 show also record in time.
the coal petrography resistivity measurement
1) open resistivity meter 18, test lead is arranged on to the two ends of comprehensive clamper 16, click computing machine 24 resistivity monitoring softwares;
2) pass into gas to comprehensive clamper 16, now open gas cylinder 1, gas boosting pump 35, solenoid valve b4, solenoid valve c7, solenoid valve e12, shut electromagnetic valve a3, solenoid valve d8, solenoid valve f27;
3) temperature of regulating constant incubator 17, utilize axial compression auto-loading system 30 and confined pressure auto-loading system 31 to load corresponding axial compression and confined pressure as required;
4) until temperature, the axial compression confined pressure of constant temperature oven 17 and pass into the tensimeter b9 of gas stable after, the variation of monitoring resistor rate, record after the value stabilization of resistivity.
the coal petrography sonic test
sonic test mainly utilizes the ultrasonic pulse transmission beam method, and the compressional wave under measurement different temperatures pressure condition and shear wave, along the time of coal sample 14 propagation, finally calculate velocity of longitudinal wave and the shear wave velocity of coal sample 14, and testing procedure is as follows:
1) open sonic apparatus 19, test lead is arranged on to the two ends of comprehensive clamper 16, click computing machine 24 acoustic emissions and receive control software;
2) close gas cylinder 1, gas boosting pump 35, liquid booster pump 36, solenoid valve a3, solenoid valve b4, solenoid valve c7, solenoid valve d8, solenoid valve e12 and solenoid valve f27;
3) temperature of regulating constant incubator 17, utilize axial compression auto-loading system 30 and confined pressure auto-loading system 31 to load corresponding axial compression and confined pressure as required;
4), after the temperature of constant temperature oven 17, axial compression confined pressure steady, click sound wave controlled software on computing machine 24 and launch and receive compressional wave and shear wave;
5) the compressional wave shear wave mistiming that computing machine 24 bases transmit and receive, and the length of coal sample 14, calculate velocity of longitudinal wave and the shear wave velocity of this coal sample 14 under this temperature, pressure condition, and then calculate when elastic modulus of Poisson according to the mechanics formula.
Claims (4)
1. one kind covers and presses the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device, this covers presses the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device to be provided with a constant temperature oven (17), the bottom of constant temperature oven (17) is provided with passive base (28), it is characterized in that, constant temperature oven (17) bottom is provided with two support bars (29) straight up, the top of support bar (29) is provided with comprehensive clamper (16), be provided with and advance platform (32) in comprehensive clamper (16), advance the top of platform (32) to be provided with cushion block (33) and coal sample (14), the two ends up and down of comprehensive clamper (16) are connecting resistivity meter (18) and sonic apparatus (19) by the circuit line, comprehensive clamper (16) bottom connects axial compression auto-loading system (30), the side of comprehensive clamper (16) is connecting confined pressure auto-loading system (31), the top of comprehensive clamper (16) is provided with experiment oil pipe (15), insert in coal sample (14) bottom of experiment oil pipe (15), the top of experiment oil pipe (15) is connecting solenoid valve e(12 successively by the wire I), standard chamber (11), tensimeter b(9), solenoid valve c(7), barostat (5) and gas boosting pump (35), the import that described gas increases pump (35) is connected with gas cylinder (1) by wire, wire is provided with tensimeter a(2) and solenoid valve b(4), connect the wire of gas cylinder (1) also by solenoid valve a(3) connecting gas humidification device (37), the top of experiment oil pipe (15) is connecting tensimeter c(10 successively by the wire II), solenoid valve d(8), hydrostate (6), liquid booster pump (36) and water tank (38), the bottom of described comprehensive clamper (16) is connecting solenoid valve f(27 successively) and gas-liquid separator (26), the bottom of described constant temperature oven (17) is connected with computing machine (24), and computing machine (24) is concentrated acquisition and processing to the data of measuring.
2. a kind of covering according to claim 1 presses the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device, it is characterized in that, the center of described coal sample (14) has embedded ess-strain sheet (34), wraps the pressure-bearing wall with gum cover (13) around coal sample (14).
3. a kind of covering according to claim 1 presses the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device, it is characterized in that, described gas-liquid separator (26) is connected with gas meter (22) and liquid flowmeter (23), associated line between gas-liquid separator (26) and gas meter (22) is provided with tensimeter d(20), the associated line between gas-liquid separator (26) and liquid flowmeter (23) is provided with tensimeter e(21).
4. a kind of covering according to claim 1 presses the lower coal petrography hole of heating to ooze electroacoustic ess-strain translocation device, it is characterized in that, the bottom of described comprehensive clamper (16) is connected with stress-strain gage (25).
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|---|---|---|---|
| CN2013101211842A CN103163059A (en) | 2013-04-09 | 2013-04-09 | Coal rock porosity, permeability and electroacoustic stress-strain combined measuring device under overburden pressure and heating |
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| CN104316448A (en) * | 2014-11-03 | 2015-01-28 | 中国石油大学(华东) | Prediction method for dynamic change of high-rank coal rock gas-phase permeability |
| CN104594885A (en) * | 2014-10-16 | 2015-05-06 | 北京科技大学 | Measuring test device and method for seepage law of shale gas in microfractures |
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| CN109752256A (en) * | 2019-02-20 | 2019-05-14 | 中国地质大学（武汉） | Measure the Dynamic triaxial test device and method of natural gas hydrate deposits object dynamic strain |
| CN111350539A (en) * | 2018-12-05 | 2020-06-30 | 重庆大学 | Multifunctional experimental device and experimental method |
| CN114965579A (en) * | 2021-02-24 | 2022-08-30 | 中国石油化工股份有限公司 | Oil, gas and water three-phase fluid saturation calibration test device and method |
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| CN114965579A (en) * | 2021-02-24 | 2022-08-30 | 中国石油化工股份有限公司 | Oil, gas and water three-phase fluid saturation calibration test device and method |
| CN115266514A (en) * | 2022-05-11 | 2022-11-01 | 中国石油大学(华东) | Dynamic evaluation device and method for rock mechanical parameters in high-pressure fluid injection process |
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