CN106370579A - Gas permeability determinator - Google Patents

Gas permeability determinator Download PDF

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Publication number
CN106370579A
CN106370579A CN201610780133.4A CN201610780133A CN106370579A CN 106370579 A CN106370579 A CN 106370579A CN 201610780133 A CN201610780133 A CN 201610780133A CN 106370579 A CN106370579 A CN 106370579A
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CN
China
Prior art keywords
confined pressure
pressure
cylinder
unit
core
Prior art date
Application number
CN201610780133.4A
Other languages
Chinese (zh)
Inventor
涂勇
吴进富
马凤鸣
Original Assignee
海安华达石油仪器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 海安华达石油仪器有限公司 filed Critical 海安华达石油仪器有限公司
Priority to CN201610780133.4A priority Critical patent/CN106370579A/en
Publication of CN106370579A publication Critical patent/CN106370579A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082Investigating permeability by forcing a fluid through a sample
    • G01N15/0826Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change

Abstract

The invention relates to a gas permeability determinator. The gas permeability determinator comprises a rack, wherein a rock core clamping unit, a pressure measuring unit and a data processing unit are sequentially arranged on the rack, a vacuum treatment unit is arranged at the lower end of the rack and located on the lower side of the data processing unit, and a pressure gas supply unit is arranged beside the rack and located at the side end of the data processing unit. The gas permeability determinator has the advantages that through the arrangement of the vacuum treatment unit, the whole determinator can be subjected to vacuumizing treatment before determination, it is avoided that gas remaining in the device affects the detection result, and the accuracy of the determination result is guaranteed; besides, through the arrangement of the rock core clamping unit, the pressure measuring unit, the data processing unit and the pressure gas supply unit, the gas permeability of a rock core can be determined automatically, and the automation degree is high.

Description

A kind of gas permeability detector
Technical field
The present invention relates to a kind of geology measures field, particularly to a kind of gas permeability detector.
Background technology
Rock during pressure differential is had to allow the property that gas passes through to be referred to as the permeability of rock, permeability is rock permeability Quantity represents, it characterizes the ability that oil gas flows to shaft bottom by formation rock, and unit is square metre.And permeability automatically determines Instrument is then a kind of rock core Physical Property Analysis instrument, can provide reliable rock core for the R&D institution of the industries such as oil, geology, colliery Permeability analyzes foundation, can determine 0.001~8000 × 10-3 μm 2 of rock core air permeability exactly.
For example, refer to a kind of shale gas permeability detector in patent cn103226089a, including passing sequentially through Gas cylinder, pressure-regulating valve, pneumatic operated valve, pressure transducer, pneumatic operated valve, pressure transducer and emptying that sealing pipeline connects Valve, also includes hand-operated valve, model cup, temperature sensor, specimen cup and thermostat;Further relate to a kind of shale gas permeability to survey Determining method, by rock core being broken into the granule of a certain shape, being then placed in the hermetic container of a constant temperature, plus certain After pressure, its pressure of real time record over time, calculates the permeability of shale substrate.Make the test of shale permeability not Affected by fracture permeabgility again, can accurately be recorded the matrix permeability of shale.
But, the analyzer in said structure remains certain defect: above-mentioned together before measurements, entirely Device can deposit a small amount of for the air draining, thus can affect to lead to final measurement result inaccurate.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of gas permeability detector, carries out evacuation before seeing mensure Process it is ensured that the accuracy of measurement result.
For solving above-mentioned technical problem, the technical scheme is that a kind of gas permeability detector, its innovative point exists In: include
One frame, is disposed with rock core grip unit, pressure measurement cell, data processing unit, in frame in frame The downside that lower end is located at data processing unit is additionally provided with a vacuum treatment unit, is located at data processing unit in the side of frame Side be additionally provided with a forced air supply unit.
Further, described rock core grip unit includes the clamp bracket being arranged on frame upper end, has in clamp bracket There is the through hole that several and column distribution appearance core chamber passes through, core chamber is bolted in clamp bracket, described core chamber Inside there is a confined pressure chamber being formed by upper rank portion and lower rank portion, confined pressure intracavity places sample cell, wherein, the lower rank of core chamber bottom There is screw thread in portion, matches with the screw thread of fixing plug, there is screw thread in the upper rank portion on core chamber top, with end sealing lid and adjustable stifled Head cooperates, and the outer wall of described sample cell has helicla flute, after fitting with the inwall of core chamber, has formation to be used in confined pressure intracavity The helical duct that displacement fluid passes through, there are displacement fluid passage and use for displacement fluid circulation in the inside of described fixing plug The confined pressure fluid passage passed through in confined pressure fluid, wherein, one end of displacement fluid passage is that displacement pressure is imported and exported, and the other end exists In sample cell, one end of confined pressure fluid passage is that confined pressure is imported and exported, the other end in confined pressure intracavity, end sealing lid center annular space, Closely be connected with core chamber by outside screw, be stuck in the prominence in rank portion, by the inside thread in center ring vacancy with can Plug is adjusted closely to connect, by core chamber's end sealing, adjustable plug passes through end sealing lid center annular space, by screw thread and top The inside thread of closure is combined closely, and has displacement fluid passage and use for displacement fluid circulation in the inside of adjustable plug The confined pressure fluid passage passed through in confined pressure fluid, wherein, one end of displacement fluid passage is that displacement pressure is imported and exported, and the other end exists In sample cell, one end of confined pressure fluid passage is that confined pressure is imported and exported, and, in confined pressure intracavity, described adjustable plug can be by installing for the other end Upper hold-down cylinder in core chamber upper end drives and carries out up-down adjustment, is also set with a rubber tube in the outer end of core chamber, and rubber Gap is left, the lower end of described core chamber is additionally provided with takes blame for others, also in the lower end of core chamber simultaneously between cylinder and core chamber It is provided with one-to-one mass flowmenter.
Further, described pressure measurement cell includes a twin-tub confined pressure pump, and this twin-tub confined pressure pump includes two pacifies side by side Be contained in the confined pressure pump in frame, described confined pressure pump includes the upper cylinder body of a upper and lower setting, lower cylinder body, upper cylinder body and lower cylinder body it Between by one gear-box connect, this gear-box is arranged in frame by bolt, has a pair and cooperate in described gear-box Turbine, worm screw, simultaneously the one end in gear-box be connected with one driving worm screw rotate motor, be provided with turbine center One screw mandrel extending to upper and lower cylinder body, is set with matched screw mandrel cap in the outer end of screw mandrel, and this screw mandrel cap is arranged on gear In case and be located at the upper end of turbine, it is additionally provided with sealing ring between the upper end of described screw mandrel and upper cylinder body, also includes a pressure biography Sensor, rock core grip unit is accessed in one end of this pressure transducer, and the other end accesses twin-tub confined pressure pump.
Further, described data processing unit includes a computer being arranged on frame upper end, is provided with described computer Capture card and data processing software, also include a printer being connected with computer.
Further, described forced air supply unit includes an air compressor machine being arranged on frame side, the giving vent to anger of this air compressor machine Mouth terminates into pressure measurement cell.
Further, described vacuum treatment unit includes a vacuum pump being arranged on frame bottom, and this vacuum pump can be by pacifying The Motor drive being contained in vacuum pump side is operated, and one end of described vacuum pump is connected with gas cylinder, and the other end accesses rock core folder Hold unit.
It is an advantage of the current invention that: in the present invention, by the setting of vacuum treatment unit, can be first right before the assay Whole analyzer carries out evacuation process, it is to avoid in device, the gas of residual impacts it is ensured that measurement result to testing result Accuracy;In addition, passing through rock core grip unit, pressure measurement cell, data processing unit, the setting of forced air supply unit, The gas permeability of rock core can be automatically determined, high degree of automation.
By being designed to the structure of rock core grip unit, it is to avoid the temperature of core holding unit under conventional high pressure conditions The bottleneck to nmr probe coil generation severe jamming for the change, ingenious utilization heat insulation structure, to core holding unit originally The conduction of fever of the body amount is effectively intercepted, thus preventing the temperature change interference that even whole magnet produces to probe coil, more It is applied to the low-field nuclear magnetic resonance Image analysis system based on permanent magnet.
Structure for pressure measurement cell is designed, right using the cooperation between twin-tub confined pressure pump and pressure transducer The pressure of core chamber is measured, and this twin cylinder pump can make displacement fluid pass through rock core, stops displacement fluid along the seepage flow of wall, follows the tracks of Rock core inlet pressure, keeps net confined pressure constant, can continuously no pulse circulate, energy constant speed, constant voltage work, accurate measurement, precision Height, has suction, discharge opeing, pre- function of increasing pressure, pressure protection and the protection of position bound, and pump chamber is little, and time of repose is short.
In the present invention, the design to data processing unit, carries out data in conjunction with other parameters by data processing software Process, calculate the permeability of rock core, analysis numeral is accurately and reliably.
By being designed to the structure of vacuum treatment unit, using the cooperation between vacuum pump and gas cylinder, survey to whole Determine instrument and carry out evacuation process, the gas simultaneously extracted out is collected and can be recycled by gas cylinder, it is to avoid waste.
Brief description
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the schematic diagram of the gas permeability detector of the present invention.
Fig. 2 is the schematic diagram of core chamber in the present invention.
Fig. 3 is the schematic diagram of confined pressure pump in the present invention.
Fig. 4 is the workflow diagram of gas permeability detector in the present invention.
Specific embodiment
The following examples can make professional and technical personnel that the present invention is more fully understood, but not therefore by this Bright it is limited among described scope of embodiments.
A kind of gas permeability detector as Figure 1-Figure 4, including
One frame 21, is disposed with rock core grip unit, pressure measurement cell, data processing unit, in machine in frame 21 The downside that the lower end of frame 21 is located at data processing unit is additionally provided with a vacuum treatment unit, is located at data in the side of frame 21 The side of processing unit is additionally provided with a forced air supply unit.
Rock core grip unit includes being arranged on the clamp bracket 22 of frame 1 upper end, clamp bracket 22 has several simultaneously The through hole that the appearance core chamber 23 of column distribution passes through, core chamber 23 is bolted in clamp bracket 22.
Schematic diagram as shown in Figure 2 understands, is provided with sample cell 7, fixing plug 14, adjustable plug 3, protects in core chamber 23 Warm sleeve 8, end sealing lid 4, have in core chamber 23 one by the confined pressure chamber 10 that formed of rank portion 15 and lower rank portion 16, enclosing Sample cell 7 is placed, wherein, there are screw thread, and the screw thread with fixing plug 14 in the lower rank portion 16 of the bottom of core chamber 23 in pressure chamber 10 Match, and using o type sealing ring 503 by core chamber 23 bottom end seal, in an experiment the bottom of core chamber 23 be always maintained at close Envelope state, the resistance to pressure energy of core chamber 23 reaches 22mpa.
Sample cell 7 is made up of FFKM or perfluoroplastic, for placing laboratory sample 13, is placed in the confined pressure of core chamber 23 In chamber 10, the outer wall of sample cell 7 has helicla flute, after fitting with the inwall of core chamber 23, has formation to be used for driving in confined pressure chamber 10 The helical duct passing through for fluid, after described helical duct is used for injection confined pressure fluid in confined pressure chamber 10, confined pressure fluid is permissible Spiral by confined pressure chamber 10, the laboratory sample being placed in sample cell 7 is heated such that it is able to more sufficiently effective or Person's cooling down operation.Described sample cell 7 can be 25mm between accommodating, and length is the rock core of 60mm size, coal sample or natural heavy Lamination sample carries out NMR system image checking.
Fixing plug 14 is made up of engineering plastics, is closely connected by the screw thread of screw thread and the lower rank portion 16 of core chamber 23 bottom Connect, by the sealed bottom of core chamber 23;Have inside fixing plug 14 for the displacement fluid passage of displacement fluid circulation and be used for The confined pressure fluid passage that confined pressure fluid passes through;Wherein, one end of displacement fluid passage is that displacement pressure imports and exports 102, the other end In sample cell;One end of confined pressure fluid passage is that confined pressure imports and exports 202, and the other end is in confined pressure intracavity;Wherein, the present invention's In a kind of embodiment, described displacement pressure imports and exports 102 centers being located at fixing plug 14 top surface, and described confined pressure is imported and exported The side of the fixing plug 14 of 202 confined pressures, described displacement fluid passage, confined pressure fluid passage do not interfere with each other.
End sealing lid 4 center annular space, is closely connected with core chamber 23 by outside screw, is stuck in the projection in rank portion 15 Place, and sealed using o type sealing ring 501.Adjustable plug 3, through the center annular space of end sealing lid 4, in end sealing In the case that lid 4 is fixing, adjustable plug 3 can slide in the center ring vacancy of end sealing lid 4, and adjustment is adjustable, and plug enters sample The depth of pipe 7, the adjusting range of described adjustable plug is in 2cm~6cm in an embodiment of the present invention.If in experiment sample When product 13 volume ratio is less, beyond the adjusting range of adjustable plug 3, then on the end face of fixing plug and adjustable plug Place the plug pad 11 of respective thickness, there is the central passage overlapping with displacement fluid passage at described plug pad 11 center, block up Have, on two end faces of head gasket 11, the annular cutting communicating with described central passage.On the premise of ensureing sealing effectiveness, Ensure fixing plug 14 or the end face of adjustable plug 3 and the close contact of core sample, thus localizing sample, be conducive to confined pressure Apply.
Adjustable plug 3 is combined closely by the inside thread of screw thread and end sealing lid 4, so that cylinder top is sealed;Internal There is the confined pressure fluid passage pass through for the displacement fluid passage of displacement fluid circulation and for confined pressure fluid;Displacement fluid passage One end be displacement pressure import and export 101, the other end is in sample cell;One end of confined pressure fluid passage is that confined pressure imports and exports 201, The other end is in confined pressure chamber 10;Wherein, in an embodiment of the present invention, described displacement pressure imports and exports 101 positioned at adjustable The center of plug 3 top surface, described confined pressure imports and exports 201 sides being located at adjustable plug 3, described displacement fluid passage, confined pressure Fluid passage does not interfere with each other, and adjustable plug 3 can be driven by the upper hold-down cylinder 24 being arranged on core chamber 23 upper end and carry out up-down adjustment.
Also it is set with a rubber tube 8 in the outer end of core chamber 23, and leave gap between rubber tube 8 and core chamber 23, The lower end of core chamber 3 is additionally provided with takes blame for others 25, and the lower end in core chamber is additionally provided with one-to-one mass flow simultaneously Meter 39.By being designed to the structure of core chamber, it is to avoid under conventional high pressure conditions, the temperature change of core holding unit is to core Magnetic resonance probe coil produces the bottleneck of severe jamming, ingenious utilization heat insulation structure, and core holding unit heat itself is passed Leading and effectively intercepted, thus preventing the temperature change interference that even whole magnet produces to probe coil, being more applicable for base Low-field nuclear magnetic resonance Image analysis system in permanent magnet.
Schematic diagram as shown in Figure 3 understands, pressure measurement cell includes a twin-tub confined pressure pump 26, and this twin-tub confined pressure pump 26 wraps Include two rack-mounted confined pressure pumps side by side, confined pressure pump includes the upper cylinder body 30 of a upper and lower setting, lower cylinder body 31, upper cylinder half It is connected by a gear-box 32 between body 30 and lower cylinder body 31, this gear-box 32 is arranged in frame 1 by bolt, in gear-box There is in 32 a pair the turbine 33 cooperating, worm screw 34, the one end in gear-box 32 is connected with 34 turns of a driving worm screw simultaneously Dynamic motor 35, is provided with a screw mandrel 36 extending to upper cylinder body 30, lower cylinder body 31 at turbine 33 center, in screw mandrel 36 Outer end is set with matched screw mandrel cap 37, and this screw mandrel cap 37 is arranged in gear-box 32 and is located at the upper end of turbine 33, It is additionally provided with sealing ring 37 between the upper end of screw mandrel 36 and upper cylinder body 30, be additionally provided with an air chamber 27 in the upper end of upper cylinder body 30, Several QI KOU 28 being connected with core chamber 23 are had on air chamber 27.
Also include a pressure transducer 38, rock core grip unit is accessed in one end of this pressure transducer 38, and the other end accesses Twin-tub confined pressure pump.Using the cooperation between twin-tub confined pressure pump and pressure transducer, the pressure of core chamber is measured, this twin-tub Pump can make displacement fluid pass through rock core, stop displacement fluid along the seepage flow of wall, follow the tracks of rock core inlet pressure, keeps net confined pressure permanent Fixed, continuously no pulse can circulate, energy constant speed, constant voltage work, accurate measurement, high precision, there is suction, discharge opeing, be pressurized work(in advance Can, pressure is protected and the protection of position bound, and pump chamber is little, and time of repose is short.
Data processing unit includes a computer 40 being arranged on frame 1 upper end, and computer mounting bracket 41 installed by this computer 40, Computer mounting bracket 41 is fixed on the upper end of frame 1, is provided with capture card and data processing software in computer 40, also includes one The printer being connected with computer 40.Design to data processing unit, carries out data in conjunction with other parameters by data processing software Process, calculate rock core permeability, analysis numeral accurately and reliably.
Forced air supply unit includes an air compressor machine 42 being arranged on frame 1 side, and the outlet port of this air compressor machine 42 accesses Pressure measurement cell.
Vacuum treatment unit includes a vacuum pump 43 being arranged on frame bottom, and this vacuum pump 43 can be by being arranged on vacuum pump The motor 44 of 43 sides drives and is operated, and one end of vacuum pump 43 is connected with gas cylinder 45, and the other end accesses rock core grip unit. By being designed to the structure of vacuum treatment unit, using the cooperation between vacuum pump and gas cylinder, whole analyzer is carried out Evacuation is processed, and the gas simultaneously extracted out is collected and can be recycled by gas cylinder, it is to avoid waste.
Operation principle: when being measured, first core sample 13 to be detected is put into the sample cell 7 in core chamber 23 Interior, and adjustable plug 3 is adjusted according to the length of core sample 13, make rock core plug hold out against rock core, and add ring means of press seals, carrying out Before mensure, motor 44 works first, opens vacuum pump 43, carries out evacuation process to whole analyzer, the gas simultaneously extracted out Stored by gas cylinder 45, when the pressure that pressure gauge 50 detects reaches 0.02mpa, stop vacuum pump 43, reach examination criteria, Then it is passed through the gas of certain pressure in from air compressor machine 42 to core chamber 23, gas is through the required measurement pressure of pressure regulator valve output Power, and it is worth the test pressure as rock core front end successively, detected by pressure transducer, be reflected directly on digital wash, and Got off by automatic data collection, gas, through the flow of core sample 13, is measured by mass flowmenter 39, simultaneously in flow indication Its flow value is shown on instrument, rear emptying ring pressure after terminating after tested, then loosen plunger removal of core sample by adjusting adjustable plug 3 Product 13.
It should be understood by those skilled in the art that, the present invention is not restricted to the described embodiments, above-described embodiment and explanation Merely illustrating the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has Various changes and modifications, these changes and improvements both fall within scope of the claimed invention.Claimed scope By appending claims and its equivalent thereof.

Claims (6)

1. a kind of gas permeability detector it is characterised in that: include
One frame, is disposed with rock core grip unit, pressure measurement cell, data processing unit, in frame in frame The downside that lower end is located at data processing unit is additionally provided with a vacuum treatment unit, is located at data processing unit in the side of frame Side be additionally provided with a forced air supply unit.
2. gas permeability detector according to claim 1 it is characterised in that: described rock core grip unit include install In the clamp bracket of frame upper end, the through hole that several and column distribution appearance core chamber passes through, core chamber are had on clamp bracket It is bolted in clamp bracket, described rock core interior has a confined pressure chamber being formed by upper rank portion and lower rank portion, confined pressure Intracavity places sample cell, and wherein, there is screw thread in the lower rank portion of core chamber bottom, matches with the screw thread of fixing plug, rock core ceiling There is screw thread in the upper rank portion at end, cooperates with end sealing lid and adjustable plug, the outer wall of described sample cell has helicla flute, with rock After the inwall laminating of ventricle, have in confined pressure intracavity and form the helical duct that passes through for displacement fluid, described fixing plug interior There are the confined pressure fluid passage pass through for the displacement fluid passage of displacement fluid circulation and for confined pressure fluid, wherein, displacement in portion One end of fluid passage is that displacement pressure is imported and exported, and in sample cell, one end of confined pressure fluid passage is confined pressure turnover to the other end Mouthful, the other end, in confined pressure intracavity, end sealing lid center annular space, is closely connected with core chamber by outside screw, is stuck in rank The prominence in portion, is closely connected with adjustable plug by the inside thread in center ring vacancy, by core chamber's end sealing, adjustable stifled Head passes through end sealing lid center annular space, is combined closely by the inside thread of screw thread and end sealing lid, in adjustable plug There is the confined pressure fluid passage pass through for the displacement fluid passage of displacement fluid circulation and for confined pressure fluid inside, wherein, drives One end for fluid passage is that displacement pressure is imported and exported, and in sample cell, one end of confined pressure fluid passage is that confined pressure is entered to the other end Outlet, in confined pressure intracavity, described adjustable plug can be driven by the upper hold-down cylinder being arranged on core chamber upper end and carry out up and down the other end Adjust, be also set with a rubber tube in the outer end of core chamber, and between rubber tube and core chamber, leave gap, described core chamber Lower end is additionally provided with takes blame for others, and the lower end in core chamber is additionally provided with one-to-one mass flowmenter simultaneously.
3. gas permeability detector according to claim 1 it is characterised in that: described pressure measurement cell includes a pair of Cylinder confined pressure pump, this twin-tub confined pressure pump includes two rack-mounted confined pressure pumps side by side, and described confined pressure pump includes one and upper and lower sets The upper cylinder body put, lower cylinder body, are connected by a gear-box between upper cylinder body and lower cylinder body, this gear-box is arranged on machine by bolt On frame, there is in described gear-box a pair the turbine cooperating, worm screw, the one end in gear-box is connected with a driving snail simultaneously Bar rotate motor, at turbine center, one screw mandrel extending to upper and lower cylinder body is installed, the outer end of screw mandrel be set with Cooperation screw mandrel cap, this screw mandrel cap is arranged in gear-box and upper end, the upper end of described screw mandrel and upper cylinder body positioned at turbine Between be additionally provided with sealing ring, also include a pressure transducer, rock core grip unit is accessed in one end of this pressure transducer, another Terminate into twin-tub confined pressure pump.
4. gas permeability detector according to claim 1 it is characterised in that: described data processing unit includes a peace It is contained in the computer of frame upper end, capture card and data processing software are installed in described computer, also include one and be connected with computer Printer.
5. gas permeability detector according to claim 1 it is characterised in that: described forced air supply unit includes a peace It is contained in the air compressor machine of frame side, the outlet port cut-in pressure measuring unit of this air compressor machine.
6. gas permeability detector according to claim 1 it is characterised in that: described vacuum treatment unit includes a peace It is contained in the vacuum pump of frame bottom, this vacuum pump can be operated by the Motor drive being arranged on vacuum pump side, described vacuum One end of pump is connected with gas cylinder, and the other end accesses rock core grip unit.
CN201610780133.4A 2016-08-30 2016-08-30 Gas permeability determinator CN106370579A (en)

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Application Number Priority Date Filing Date Title
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651557A (en) * 1984-12-19 1987-03-24 Societe Nationale D'exploitation Industrielle Des Tabacs Et Allumettes Apparatus for measuring the flow-pressure characteristics of the gas passing through a product sample having two faces
CN201425008Y (en) * 2008-11-06 2010-03-17 钱如树 Constant-speed and constant-pressure metering pump
CN102062742A (en) * 2010-12-15 2011-05-18 大连理工大学 Sand-filling type clamp fastener for nuclear magnetic resonance imaging
CN102288629A (en) * 2011-07-01 2011-12-21 中联煤层气国家工程研究中心有限责任公司 Core holder
CN102353584A (en) * 2011-05-19 2012-02-15 山东中石大石仪科技有限公司 Cylindrical rock core true triaxial gripper
CN103776744A (en) * 2012-10-19 2014-05-07 中国石油化工股份有限公司 Detection method and detection system for rock sample three-direction permeability
CN104819914A (en) * 2015-04-22 2015-08-05 中国矿业大学 Experimental device for promoting gas flowing with ultrasonic waves
CN105675469A (en) * 2016-01-25 2016-06-15 中国矿业大学 Full-automatic test system and measurement method for gas permeability of rock

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651557A (en) * 1984-12-19 1987-03-24 Societe Nationale D'exploitation Industrielle Des Tabacs Et Allumettes Apparatus for measuring the flow-pressure characteristics of the gas passing through a product sample having two faces
CN201425008Y (en) * 2008-11-06 2010-03-17 钱如树 Constant-speed and constant-pressure metering pump
CN102062742A (en) * 2010-12-15 2011-05-18 大连理工大学 Sand-filling type clamp fastener for nuclear magnetic resonance imaging
CN102353584A (en) * 2011-05-19 2012-02-15 山东中石大石仪科技有限公司 Cylindrical rock core true triaxial gripper
CN102288629A (en) * 2011-07-01 2011-12-21 中联煤层气国家工程研究中心有限责任公司 Core holder
CN103776744A (en) * 2012-10-19 2014-05-07 中国石油化工股份有限公司 Detection method and detection system for rock sample three-direction permeability
CN104819914A (en) * 2015-04-22 2015-08-05 中国矿业大学 Experimental device for promoting gas flowing with ultrasonic waves
CN105675469A (en) * 2016-01-25 2016-06-15 中国矿业大学 Full-automatic test system and measurement method for gas permeability of rock

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