CN103245597A - Device and method for measuring instantaneous pneumatic pulse permeability of low-permeability rock - Google Patents
Device and method for measuring instantaneous pneumatic pulse permeability of low-permeability rock Download PDFInfo
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- CN103245597A CN103245597A CN201310207056XA CN201310207056A CN103245597A CN 103245597 A CN103245597 A CN 103245597A CN 201310207056X A CN201310207056X A CN 201310207056XA CN 201310207056 A CN201310207056 A CN 201310207056A CN 103245597 A CN103245597 A CN 103245597A
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Abstract
The invention relates to a device and method for measuring instantaneous pneumatic pulse permeability of low-permeability rock. The device comprises a confining pressure servo system, a pneumatic servo system and a data acquisition and processing system, wherein the confining pressure servo system can apply 0 to 60MPa of confining pressure to the lateral side of a low-permeability rock sample; the pneumatic servo system consists of an air injection system and an air permeating system; the air injection system can provide 0.1 to 10MPa of high-purity nitrogen; the air permeating system can conduct air permeation tests of two different ranges on a pipeline loop and a steel cylinder loop; and the data acquisition and processing system can real-timely acquire pressure of the rock sample at an inlet and outlet loops, and can be used for drawing a pressure-time curve of the inlet and outlet loops, automatically calculating the permeability of the rock sample, storing and displaying the result. The measurement device provided by the invention can perform permeability measurement tests of rock materials, especially low-permeability rocks, under different confining pressures, has the advantages of simpleness in operation and reliable result, and can display result visually.
Description
Technical field
The invention belongs to rock mass seepage flow and seepage-stress coupling technique field, particularly be applicable to hypotonic rock transient state pneumatic pressure pulses permeability survey device and measuring method under the different confined pressure conditions.
Background technology
The penetration study of hypotonic rock to low-permeability oil gas field development, the underground energy store, fields such as greenhouse gases are undergroundly sealed up for safekeeping, gassy mine gas drainage, radioactive waste geological disposal all have very important significance.Yet, because permeability test time of hypotonic rock is long, sealing difficulty is big, accuracy requirement is high and easy characteristics such as affected by environment, also fail to satisfy engineering construction and safety assessment demand far away at the experimental study of tight rock both at home and abroad at present.The shop experiment method of rock permeability test can be divided into steady state flow method, transient pressure impulse method and pressure oscillation ripple method.Wherein, the transient pressure impulse method can reach 10 because of its theoretical maturation, measuring accuracy
-22m
2And be widely adopted; Osmotic fluid can be selected water, gas (as nitrogen, helium) or kerosene for use and since gas have glutinousness little, be difficult for and characteristics such as rock sample generation physical-chemical reaction, therefore hypotonic rock permeability test how with gas as osmotic fluid.Yet, the domestic transient pressure impulse method gas permeability apparatus that does not possess hypotonic rock permeability measurement under the different confined pressure conditions of research at present as yet.
Summary of the invention
A kind ofly be applicable to hypotonic rock transient state pneumatic pressure pulses permeability survey device and test method under the different confined pressure conditions, and provided the test method of this device.
Apparatus of the present invention comprise confined pressure servo-drive system, pneumatic servo and data acquisition processing system.Wherein, the confined pressure servo-drive system can apply 0 ~ 60MPa confined pressure in hypotonic rock sample side direction; Pneumatic servo is made up of gas injection system and gas osmosis system, and gas injection system can provide the high pure nitrogen of 0.1 ~ 10MPa, and the gas osmosis system can carry out the gas permeability test of two different ranges of pipeline loop and steel cylinder loop; Data acquisition system (DAS) can be gathered rock sample in real time at the pressure in import and export loop, draws the pressure-time curve in import and export loop and the automatic permeability of computing rock sample simultaneously, stores and shows.Each system is described in detail as follows:
1, confined pressure servo-drive system
The confined pressure servo-drive system adopts triaxial rheometer confined pressure servo-drive system.This system aims at rock and coagulation great soil group material and carries out mechanical property test and design, and is easy to operate, the automaticity height, and test is carried out under computer control fully.The confined pressure servo-drive system can apply side direction 0 ~ 60MPa confined pressure, and control accuracy is 0.01MPa, can keep stable in two months, and error is no more than 1%.
The confined pressure servo-drive system comprises pressure-oil tank, first hydraulic valve, the first high-precision hydraulic pump, first safety disc, second hydraulic valve and confined pressure sensor; The described first high-precision hydraulic pump, first safety disc, second hydraulic valve connect the confined pressure sensor after connecting successively; First hydraulic valve, one end is connected with pressure-oil tank, the other end respectively with second hydraulic valve with connect the confined pressure sensor and be connected; The described first high-precision hydraulic pump also is connected with gas injection system; Described confined pressure sensor also is connected with the gas osmosis system.
2, pneumatic servo
The gas osmosis system is made up of gas injection system and gas osmosis system, and its key is the sealing of gas osmosis system.
(1) gas injection system comprises high pressure nitrogen, air valve, gas pressure reducer and connecting pipe.High pressure nitrogen full admission pressure is 20MPa, and gas pressure reducer can provide the atmospheric pressure that goes out of 0.1 ~ 10MPa.
Gas injection system comprises high pressure nitrogen and the air valve that is attached thereto, and described air valve also connects gas pressure reducer, the 3rd hydraulic valve successively; Connect on described the 3rd hydraulic valve to connect respectively with second safety disc behind the gas sampling container and be connected with the 4th hydraulic valve; Be connected with the above-mentioned first high-precision hydraulic pump before described second safety disc with after the second high-precision hydraulic pump links to each other, the back links to each other with the gas osmosis system after linking to each other with the 4th hydraulic valve.
(2) the gas osmosis system can carry out the gas permeability test of two different ranges of pipeline loop and steel cylinder loop.Pipeline loop can carry out 10
-16~ 10
-22m
2The gas permeability test of range is made up of inlet pipeline, sample, outlet conduit, and inlet pipeline is connected by air valve with outlet conduit; The steel cylinder loop can carry out 10
-12~ 10
-18m
2The gas permeability test of range is made up of inlet pipeline, import steel cylinder, sample, outlet steel cylinder, outlet conduit.There is the common factor of two magnitudes in two loops at range, can verify test findings.
The gas osmosis system comprises entrance point, sample and sample sealing system, pressure chamber and bracing or strutting arrangement and endpiece; Wherein entrance point comprises entrance point pressure transducer, the 5th hydraulic valve, the 3rd safety disc, entrance point steel cylinder, the 6th hydraulic valve; Link to each other with the 5th hydraulic valve before described the 3rd safety disc, the back links to each other according to this with entrance point steel cylinder, the 6th hydraulic valve; Sample and sample sealing system comprise sample, envelope gas hoop, rubber case, infiltration piston; Pillar, the thermometer that links to each other with the pressure chamber that pressure chamber and bracing or strutting arrangement comprise the support of pressure chamber, fixation pressure chamber, be connected and fixed by fastening nut with support, place lower-left, pressure chamber end be communicated with pressure-oil tank the 7th hydraulic valve, place pressure chamber's upper right side to be communicated with the 8th hydraulic valve of atmosphere and the 9th hydraulic valve that is communicated with pressure-oil tank; Endpiece comprises endpiece pressure transducer, the tenth hydraulic valve that links to each other with the endpiece pressure transducer respectively and the 11 hydraulic valve, the 4th safety disc, endpiece steel cylinder, the 12 hydraulic valve; Be connected with the 11 hydraulic valve before the 4th safety disc, the back links to each other according to this with endpiece steel cylinder, the 12 hydraulic valve; Entrance point is connected by the 13 hydraulic valve with endpiece; Second hydraulic valve of described confined pressure servo-drive system links to each other with the pressure chamber of gas osmosis system; Second hydraulic valve of described confined pressure servo-drive system links to each other with the pressure chamber of gas osmosis system; The 4th hydraulic valve of gas injection system links to each other with the entrance point pressure transducer of gas osmosis system; The first high-precision hydraulic pump of confined pressure servo-drive system is linked to each other by computing machine with collection, treating apparatus, and the gas injection system second high-precision hydraulic pump is linked to each other by computing machine with collection, treating apparatus.
(3) sealing of gas osmosis system mainly is made up of the sealing of pipeline hydraulic valve and the sealing of sample.Hydraulic valve adopts the hydraulic pressure screw-in cartridge valve, and this valve impermeability is very good; Sample is placed in the high-performance rubber cover and is importing and exporting section placement metallic gasket, in pad and the envelope gas hoop sealing of sample interface portion.
3, data acquisition processing system
(1) data acquisition processing system comprises compositions such as importing and exporting gas pressure data acquisition processing system, confined pressure data acquisition processing system, axial LVDT and hoop strain meter, high-performance data collection plate.
(2) data acquisition control system can be gathered rock sample in real time at the pressure in import and export loop, draw pressure-time curve and the computing rock sample permeability in import and export loop simultaneously, store and show, can control automatically process of the test according to the computing machine result displayed.
Therefore, the present invention has following advantage: the present invention can finish the particularly permeability testing experiment of hypotonic rock under different confined pressures of rock material, and measuring process is simple to operate, reliable results, and can intuitively show the result.
Description of drawings
Accompanying drawing 1 is hypotonic rock transient state pneumatic pressure pulses permeability survey device synoptic diagram.
Accompanying drawing 2 is hypotonic rock sample dress sample and sealing synoptic diagram.
Accompanying drawing 3 is gas infiltration pipeline loop synoptic diagram.
Accompanying drawing 4 is gas infiltration steel cylinder loop synoptic diagram.
Embodiment
For more well-known explanation purpose of the present invention, technical scheme and advantage, below in conjunction with drawings and Examples the present invention is further detailed, among the figure: pressure-oil tank 1, first hydraulic valve 2, the first high-precision hydraulic pump 3, first safety disc 4, second hydraulic valve 5, confined pressure sensor 6, high pressure nitrogen 7, air valve 8, gas pressure reducer 9, the 3rd hydraulic valve 10, gas sampling container 11, the second high-precision hydraulic pump 12, second safety disc 13, the 4th hydraulic valve 14, entrance point pressure transducer 15, envelope gas hoop 16, rubber case 17, sample 18, infiltration piston 19, pressure chamber 20, support 21, pillar 22, fastening nut 23, the 7th hydraulic valve 24, thermometer 25, the 8th hydraulic valve 26, the 9th hydraulic valve 27, the 13 hydraulic valve 28, the 5th hydraulic valve 29, the tenth hydraulic valve 30, endpiece pressure transducer 31, the 3rd safety disc 32, the 4th safety disc 33, entrance point steel cylinder 34, endpiece steel cylinder 35, the 11 hydraulic valve 36, the 12 hydraulic valve 37, the 6th hydraulic valve 38, computing machine 39.
The specific embodiment of the present invention is as follows:
Step 2 applies confined pressure.After the dress sample is finished, close second hydraulic valve 5, the 7th hydraulic valve 24, the 8th hydraulic valve 26 successively, open first hydraulic valve 2, the 9th hydraulic valve 27 then successively, fill hydraulic oil for pressure chamber 39, to drive the air of 39 the insides, pressure chamber.Hydraulic oil is got back to pressure-oil tank 1 by pipeline loop, illustrates that pressure chamber 39 has been full of, and closes the 9th hydraulic valve 27, first hydraulic valve 2 this moment according to this.Open the first high-precision hydraulic pump 3, open second hydraulic valve 5, apply confined pressure to predetermined value, the confined pressure value is gathered in real time by confined pressure sensor 6.
Step 3, sample is saturated.Close the 4th hydraulic valve 14, the 13 hydraulic valve 28, the 5th hydraulic valve 29, the tenth hydraulic valve 30 successively, open the air valve 8 of high pressure nitrogen 7 then, make gas pressure reducer go out atmospheric pressure 9 and reach setting value, open the 4th hydraulic valve 14, open the second high-precision hydraulic pump 3, reach setting value up to pressure for the inflation of import pipeline.Close the 4th hydraulic valve 14, saturated to the sample inflation by loop shown in the accompanying drawing 3, the force value of entrance end is gathered in real time by entrance end pressure transducer 15,31 in saturation history.Wait to import and export the section force value equate and keep constant after, open the 13 hydraulic valve 28.
Step 4, the infiltration of pipeline loop gas.Pipeline loop gas infiltration synoptic diagram as shown in Figure 3, close the 13 hydraulic valve 28, open the 4th hydraulic valve 14, open the second high-precision hydraulic pump 12, moment is improved the inducer force value to predetermined value, pressure increment does not surpass 10% of datum pressure value, closes then and opens the first high-precision hydraulic pump 3, carries out pipeline loop gas permeability test.The force value of entrance end is gathered in real time by entrance end pressure transducer 15,31, and computer real-time is stored data and shown, and the permeability of computing rock sample.Wait to import and export the section force value equate and keep constant after, open the 13 hydraulic valve 28.
Step 5, the infiltration of steel cylinder loop gas.Pipeline loop gas infiltration synoptic diagram as shown in Figure 4, close hydraulic valve the 13 hydraulic valve 28, the 11 hydraulic valve 36, the 12 hydraulic valve 37, the 6th hydraulic valve 38 successively, open the 5th hydraulic valve 29, the tenth hydraulic valve 30, the 4th hydraulic valve 14 successively, moment is improved the inducer force value to predetermined value, close the 4th hydraulic valve 14 then, carry out steel cylinder loop gas permeability test.Import and export steel cylinder circuit pressure time-histories change curve and gathered in real time by entrance end pressure transducer 15,31, computer real-time is stored data and is shown, and the permeability of computing rock sample.Wait to import and export the section force value equate and keep constant after, open the 13 hydraulic valve 28.
Step 6, sample is torn in release open.Close gas check valve 8, the 13 hydraulic valves 28, the 11 hydraulic valve 36, the 12 hydraulic valve 37, the 6th hydraulic valve 38, gas is discharged be shown as the pipeline residual value up to pressure; To the pipeline residual value, close first hydraulic valve 2 by control software removal confined pressure, open the 7th hydraulic valve 24, the 9th hydraulic valve 27, the hydraulic oil of discharge pressure chamber 20, close hydraulic valve the 7th hydraulic valve 24, the 9th hydraulic valve 27 after the oil emptying, open sample and remove, test finishes.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (6)
1. a hypotonic rock transient state pneumatic pressure pulses permeability survey device is characterized in that, comprises confined pressure servo-drive system, gas injection system, gas osmosis system; And data acquisition, treating apparatus; Described gas osmosis system links to each other with confined pressure servo-drive system, gas injection system respectively; Described data acquisition, treating apparatus are connected with confined pressure servo-drive system, gas injection system, gas osmosis system respectively.
2. hypotonic rock transient state pneumatic pressure pulses permeability survey device according to claim 1, it is characterized in that, described confined pressure servo-drive system comprises pressure-oil tank (1), first hydraulic valve (2), the first high-precision hydraulic pump (3), first safety disc (4), second hydraulic valve (5) and confined pressure sensor (6); The described first high-precision hydraulic pump (3), first safety disc (4), second hydraulic valve (5) connect confined pressure sensor (6) after connecting successively; First hydraulic valve (2) one ends are connected with pressure-oil tank (1), the other end respectively with second hydraulic valve (5) with connect confined pressure sensor (6) and be connected; The described first high-precision hydraulic pump (3) also is connected with gas injection system; Described confined pressure sensor (6) also is connected with the gas osmosis system.
3. hypotonic rock transient state pneumatic pressure pulses permeability survey device according to claim 2, it is characterized in that, the air valve (8) that described gas injection system comprises high pressure nitrogen (7) and is attached thereto, described air valve (8) also connect gas pressure reducer (9), the 3rd hydraulic valve (10) successively; Connect on described the 3rd hydraulic valve (10) to connect respectively with second safety disc (13) behind the gas sampling container (11) and be connected with the 4th hydraulic valve (14); The preceding back that links to each other with the second high-precision hydraulic pump (12) of described second safety disc (13) is connected with the above-mentioned first high-precision hydraulic pump (3), and the back links to each other with the gas osmosis system after linking to each other with the 4th hydraulic valve (14).
4. hypotonic rock transient state pneumatic pressure pulses permeability survey device according to claim 3 is characterized in that described gas osmosis system comprises entrance point, sample and sample sealing system, pressure chamber and bracing or strutting arrangement and endpiece; Wherein entrance point comprises entrance point pressure transducer (15), the 5th hydraulic valve (29), the 3rd safety disc (32), entrance point steel cylinder (34), the 6th hydraulic valve (38); Described the 3rd safety disc (32) is preceding to link to each other with the 5th hydraulic valve (29), and the back links to each other according to this with entrance point steel cylinder (34), the 6th hydraulic valve (38); Sample and sample sealing system comprise sample (18), envelope gas hoop (16), rubber case (17), infiltration piston (19); Pillar (22), the thermometer (25) that links to each other with the pressure chamber that pressure chamber and bracing or strutting arrangement comprise the support (21) of pressure chamber (20), fixation pressure chamber (20), be connected and fixed by fastening nut (23) with support (21), place pressure chamber (20) lower-left end be communicated with pressure-oil tank (1) the 7th hydraulic valve (24), place pressure chamber (20) upper right side to be communicated with the 8th hydraulic valve (26) of atmosphere and the 9th hydraulic valve (27) that is communicated with pressure-oil tank (1); Endpiece comprises endpiece pressure transducer (31), the tenth hydraulic valve (30) that links to each other with endpiece pressure transducer (31) respectively and the 11 hydraulic valve (36), the 4th safety disc (33), endpiece steel cylinder (35), the 12 hydraulic valve (37); The 4th safety disc (33) is preceding to be connected with the 11 hydraulic valve (36), and the back links to each other according to this with endpiece steel cylinder (35), the 12 hydraulic valve (37); Entrance point is connected by the 13 hydraulic valve (28) with endpiece; Second hydraulic valve (5) of described confined pressure servo-drive system links to each other with the pressure chamber (20) of gas osmosis system; Second hydraulic valve (5) of described confined pressure servo-drive system links to each other with the pressure chamber (20) of gas osmosis system; The 4th hydraulic valve (14) of gas injection system links to each other with the entrance point pressure transducer (15) of gas osmosis system; The first high-precision hydraulic pump (3) of confined pressure servo-drive system is linked to each other by computing machine (39) with collection, treating apparatus, and the gas injection system second high-precision hydraulic pump (12) is linked to each other by computing machine (39) with collection, treating apparatus.
5. hypotonic rock transient state pneumatic pressure pulses permeability survey device according to claim 4 is characterized in that described data acquisition, treating apparatus comprise a computing machine (39).
6. a hypotonic rock transient state pneumatic pressure pulses permeability survey device experiment method is characterized in that, may further comprise the steps:
Step 1, sampling dress sample: drill through 50mm * 100mm standard rock sample, toasted 24 hours continuously in 105 ° of baking ovens, cold putting 24 hours in the vacuum cooled tower can be put into rubber sleeve (17) dress sample, afterwards in order to guarantee to adorn the sealing of sample then;
Step 2, apply confined pressure: after the dress sample is finished, close second hydraulic valve (5), the 7th hydraulic valve (24), the 8th hydraulic valve (26) successively, open first hydraulic valve (2), the 9th hydraulic valve (27) then successively, fill hydraulic oil for pressure chamber (39), to drive the air of the inside, pressure chamber (39); Hydraulic oil is got back to pressure-oil tank (1) by pipeline loop, illustrate that pressure chamber (39) is full of, close the 9th hydraulic valve (27), first hydraulic valve (2) this moment according to this, open the first high-precision hydraulic pump (3), open second hydraulic valve (5), apply confined pressure to predetermined value, the confined pressure value is gathered in real time by confined pressure sensor (6);
Step 3, sample is saturated: close the 4th hydraulic valve (14) successively, the 13 hydraulic valve (28), the 5th hydraulic valve (29), the tenth hydraulic valve (30), open the air valve (8) of high pressure nitrogen (7) then, make gas pressure reducer go out atmospheric pressure (9) and reach setting value, open the 4th hydraulic valve (14), open the second high-precision hydraulic pump (3), reach setting value up to pressure for the inflation of import pipeline, close the 4th hydraulic valve (14), saturated to the sample inflation, the force value of entrance end is by entrance end pressure transducer (15) in saturation history, (31) gather in real time, wait to import and export the section force value equate and keep constant after, open the 13 hydraulic valve (28);
Step 4, pipeline loop gas infiltration: close the 13 hydraulic valve (28), open the 4th hydraulic valve (14), open the second high-precision hydraulic pump (12), moment is improved the inducer force value to predetermined value, pressure increment does not surpass 10% of datum pressure value, close then and open the first high-precision hydraulic pump (3), carry out pipeline loop gas permeability test, the force value of entrance end is by entrance end pressure transducer (15), (31) gather in real time, computer real-time is stored data and is shown, and the permeability of computing rock sample, wait to import and export the section force value equate and keep constant after, open the 13 hydraulic valve (28):
Step 5, steel cylinder loop gas infiltration: close hydraulic valve the 13 hydraulic valve (28) successively, the 11 hydraulic valve (36), the 12 hydraulic valve (37), the 6th hydraulic valve (38), open the 5th hydraulic valve (29) successively, the tenth hydraulic valve (30), the 4th hydraulic valve (14), moment is improved the inducer force value to predetermined value, close the 4th hydraulic valve (14) then, carry out steel cylinder loop gas permeability test, import and export steel cylinder circuit pressure time-histories change curve by entrance end pressure transducer (15), (31) gather in real time, computer real-time is stored data and is shown, and the permeability of computing rock sample, wait to import and export the section force value equate and keep constant after, open the 13 hydraulic valve (28);
Step 6, sample is torn in release open: close gas check valve (8), the 13 hydraulic valve (28), the 11 hydraulic valve (36), the 12 hydraulic valve (37), the 6th hydraulic valve (38) are shown as the pipeline residual value with the gas discharge up to pressure; The removal confined pressure is closed first hydraulic valve (2) to the pipeline residual value, open the 7th hydraulic valve (24), the 9th hydraulic valve (27), the hydraulic oil of discharge pressure chamber (20), close hydraulic valve the 7th hydraulic valve (24), the 9th hydraulic valve (27) after the oil emptying, open sample and remove, test finishes.
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| CN103616322A (en) * | 2013-11-25 | 2014-03-05 | 中国石油天然气股份有限公司 | Non-steady state detection device and non-steady state detection method for permeability of low-permeability rock |
| CN103645129A (en) * | 2013-12-30 | 2014-03-19 | 中国科学院武汉岩土力学研究所 | High-temperature ultralow permeability measuring instrument |
| CN104535724A (en) * | 2014-12-29 | 2015-04-22 | 中国石油大学(华东) | Device and method for measuring leakoff coefficient of supercritical carbon dioxide fracturing fluid |
| CN106198342A (en) * | 2016-06-28 | 2016-12-07 | 武汉理工大学 | Quickly measure the hydraulic pressure succusion pilot system of hypotonic rock permeability parameter |
| CN106323841A (en) * | 2016-10-26 | 2017-01-11 | 中国科学院武汉岩土力学研究所 | Device for measuring permeability of ultra-low permeability rocks under action of triaxial stress |
| CN107655805A (en) * | 2017-08-30 | 2018-02-02 | 苏州开洛泰克科学仪器科技有限公司 | A kind of permeability measurement systems and method of hypotonic rock ore deposit particle |
| CN109030318A (en) * | 2018-09-11 | 2018-12-18 | 中国科学院地质与地球物理研究所 | A kind of pressure chamber structure and permeability test macro |
| CN109060609A (en) * | 2018-08-20 | 2018-12-21 | 中国地质大学（武汉） | A kind of natural gas hydrate permeability measurement device |
| CN109765161A (en) * | 2019-01-25 | 2019-05-17 | 中国矿业大学 | It is a kind of to utilize permeability test method and device that bucket offer osmotic pressure and confining pressure are provided |
| CN107631973B (en) * | 2017-08-18 | 2019-12-31 | 中国科学院力学研究所 | Multi-method same-machine testing device for permeability measurement of ultra-low permeability rock sample |
| CN114279936A (en) * | 2021-12-29 | 2022-04-05 | 西南石油大学 | Dynamic permeability testing device and method in oil and gas well cement slurry solidification process |
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| CN103616322A (en) * | 2013-11-25 | 2014-03-05 | 中国石油天然气股份有限公司 | Non-steady state detection device and non-steady state detection method for permeability of low-permeability rock |
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| CN104535724A (en) * | 2014-12-29 | 2015-04-22 | 中国石油大学(华东) | Device and method for measuring leakoff coefficient of supercritical carbon dioxide fracturing fluid |
| CN104535724B (en) * | 2014-12-29 | 2016-02-24 | 中国石油大学(华东) | Measure the device and method of supercritical carbon dioxide fracturing fluid leak coefficient |
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| CN106323841A (en) * | 2016-10-26 | 2017-01-11 | 中国科学院武汉岩土力学研究所 | Device for measuring permeability of ultra-low permeability rocks under action of triaxial stress |
| CN107631973B (en) * | 2017-08-18 | 2019-12-31 | 中国科学院力学研究所 | Multi-method same-machine testing device for permeability measurement of ultra-low permeability rock sample |
| CN107655805A (en) * | 2017-08-30 | 2018-02-02 | 苏州开洛泰克科学仪器科技有限公司 | A kind of permeability measurement systems and method of hypotonic rock ore deposit particle |
| CN107655805B (en) * | 2017-08-30 | 2020-02-14 | 苏州开洛泰克科学仪器科技有限公司 | System and method for measuring permeability of low-permeability rock ore particles |
| CN109060609A (en) * | 2018-08-20 | 2018-12-21 | 中国地质大学（武汉） | A kind of natural gas hydrate permeability measurement device |
| CN109030318A (en) * | 2018-09-11 | 2018-12-18 | 中国科学院地质与地球物理研究所 | A kind of pressure chamber structure and permeability test macro |
| CN109030318B (en) * | 2018-09-11 | 2024-04-02 | 中国科学院地质与地球物理研究所 | Pressure chamber structure and permeability testing system |
| CN109765161A (en) * | 2019-01-25 | 2019-05-17 | 中国矿业大学 | It is a kind of to utilize permeability test method and device that bucket offer osmotic pressure and confining pressure are provided |
| CN114279936A (en) * | 2021-12-29 | 2022-04-05 | 西南石油大学 | Dynamic permeability testing device and method in oil and gas well cement slurry solidification process |
| CN114279936B (en) * | 2021-12-29 | 2023-09-15 | 西南石油大学 | Device and method for testing dynamic permeability in solidification process of cement slurry of oil and gas well |
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| CN103245597B (en) | 2015-07-29 |
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