CN102879306B - Method for detecting gas-liquid diffusion processes by using magnetic resonance imaging (MRI) technique - Google Patents
Method for detecting gas-liquid diffusion processes by using magnetic resonance imaging (MRI) technique Download PDFInfo
- Publication number
- CN102879306B CN102879306B CN201210380112.5A CN201210380112A CN102879306B CN 102879306 B CN102879306 B CN 102879306B CN 201210380112 A CN201210380112 A CN 201210380112A CN 102879306 B CN102879306 B CN 102879306B
- Authority
- CN
- China
- Prior art keywords
- gas
- valve
- needle
- holding unit
- intermediate receptacle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Abstract
The invention relates to a device and a method for detecting gas-liquid diffusion processes by using an MRI technique, and belongs to the technical field of chemical engineering and petroleum engineering. The device comprises a magnetic resonance imaging system and a dual chamber pressure attenuation system. The magnetic resonance imaging system is provided with a rock core clamper in a magnetic resonance imaging instrument which is electrically connected with a data acquisition and processing system. According to the device and the method for detecting gas-liquid diffusion processes by using the MRI technique, proton density images, longitudinal and transverse relaxation and diffusion tensor distribution images of fluids in porous media can be measured in real time, visually and with no damage through the MRI technique. Quantitative analysis can be performed on porous medium porosity, permeability, saturation level and the like; an improved dual chamber pressure attenuation method can reduce the leakage rate, and confirm the initial gas density conveniently and accurately; and a magnetic suspension balance can monitor gas density changes in real time, and accordingly, deficiencies of traditional dual chamber pressure attenuation methods are compensated.
Description
Technical field
The present invention relates to one and utilize the devices and methods therefor of magnetic resonance imaging (MRI) technology for detection gas-liquid diffusion process, belong to chemical engineering and petroleum engineering technical field.
Background technology
Accurately hold gas and in porous medium, compose the diffusion process in the fluid of depositing, to the migration of evaluation of subterranean pollutant, coal seam gas migration, gas injection (carbon dioxide, N
2, lighter hydrocarbons) displacement of reservoir oil aspect such as catalytic and the efficiency research of packed bed reactor that improves recovery ratio, underground natural gas storage divergence loss and chemical field also has great importance.
In recent years, the coefficient of diffusion research about gas in liquid, has proposed many method of testings.Detect at present the upper single chamber decline of pressure methods that adopt of research, its advantage is that device is simple, easy to operate more, but owing to being difficult to determine the gas flow that passes into sample chamber, measuring error is larger.The double chamber pressure damped method of development not only can effectively reduce leakage probability on this basis, and can facilitate definite initial gas density accurately.The shortcoming of the method is that the mensuration of gas dissolution amount needs more complicated operation and calculating, can not realize the real-time monitoring to gas dissolution amount in diffusion mass transfer process.
In addition, due to porous medium inner structure complexity, different diffusion length, pore space yardstick and geometrical properties is of great impact to diffusion process.Rest on the holistic approach stage for the detection research of porous media model at present, can not consider the impact of nonuniformity and each diversity of pore media comprehensively.
Summary of the invention
Object of the present invention, be intended to overcome the problem that above-mentioned prior art exists, develop a kind of devices and methods therefor that utilizes nmr imaging technique to detect gas-liquid diffusion process, in conjunction with the double chamber pressure damped method of magnetic suspension balance and MRI technology, measure and analyze the variation relation that obtains gaseous mass mark and solution density, concentration, volume expansivity, relaxation time etc. and coefficient of diffusion, set up on this basis the mathematics physics model of diffusion process, thereby disclose gas-liquid diffusion process rule in porous medium.
Technical scheme of the present invention is: a kind of device that utilizes mr imaging technique to detect gas-liquid diffusion process, it mainly comprises a magnetic resonance imaging system, it also comprises a double chamber pressure attenuation factor, described magnetic resonance imaging system is provided with a core holding unit in magnetic resonance imager, adopt pipeline to connect and compose closed circuit by the exocoel of reciprocating force (forcing) pump, liquid container and core holding unit, a confined pressure pump adopts pipeline to be connected with liquid container; Connect described double chamber pressure attenuation factor at the entrance of core holding unit, outlet connects an electronics Libra and gatherer through a back pressure regulator; Described double chamber pressure attenuation factor comprises a liquid injection system and a gas injection system; Described liquid injection system adopts the intermediate receptacle of the first injection pump in air constant temperature oven to be connected with the entrance of core holding unit, is connected a water tank between the first injection pump and intermediate receptacle; Described gas injection system adopts the second injection pump to be connected with the entrance of core holding unit through magnetic suspension balance, is connected a gas cylinder and the standard titanium tank of weighing between the second injection pump and magnetic suspension balance; The described standard titanium tank of weighing is connected magnetic suspension balance by pipeline with the tenth needle-valve, the 11 needle-valve, and magnetic suspension balance is connected core holding unit by pipeline with the 12 needle-valve, the 13 needle-valve; Described magnetic resonance imager adopts and is electrically connected with data acquisition and processing (DAP) system.
In described liquid container, be provided with electric heater unit and attemperating unit.
Described intermediate receptacle adopts the first intermediate receptacle, the second intermediate receptacle and the 3rd intermediate receptacle to be connected in parallel.
A kind of described method of utilizing mr imaging technique to detect gas-liquid diffusion process comprises the following steps:
(1) rock core is loaded into core holding unit, adopts gas to survey factor of porosity method and survey core porosity;
(2) in weighing titanium tank, standard injects a certain amount of nitrogen, and weigh, open successively the tenth needle-valve, the 11 needle-valve, the 12 needle-valve, the 13 needle-valve, close other valves, the nitrogen that standard is weighed in titanium tank enters in magnetic suspension balance cavity and relevant pipeline, obtains system cavity volume by nitrogen quality total in system divided by density;
(3) pipeline in system is twined with heating tape, adopts electrically heated method to preheat and temperature control, inject fluorocarbon oil to liquid container, core holding unit is preheated to 2 hours, and after detection starts temperature control in real time;
(4) utilize air constant temperature oven to carry out temperature control to the first intermediate receptacle, the second intermediate receptacle, the 3rd intermediate receptacle that filling liquid is housed, and inject in advance rock core and carry out saturatedly, utilize and inject the liquid container of fluorocarbon oil core holding unit is carried out to loop temperature-control;
(5) inject working gas, start to detect, utilize pressure unit to record pressure and time relationship, the proton density, longitudinal relaxation time, T2, apparent diffusion coefficient and the diffusion tensor distributed image that utilize mr imaging technique to obtain not porous medium (rock core) diverse location in the same time to compose the fluid of depositing utilize the variation of magnetic suspension balance real time record gas density simultaneously;
(6) detect data processing, decline of pressure curve is carried out to analyzing and processing, set up gas in porous medium (rock core) compose the liquid of depositing in diffusion model calculate radially or axially and the coefficient of diffusion of one dimension or two dimension, calculate ensemble average coefficient of diffusion, demarcate by the proton density image that MRI is obtained, obtain distributing along dispersal direction solution density gradient, change according to the gas density of magnetic suspension balance record, and calculate gas dissolution amount in conjunction with cavity volume, obtain the relation of gas dissolution amount and coefficient of diffusion.
Technique scheme is utilized magnetic resonance imaging (MRI) technology for detection gas-liquid diffusion process, to realize the visual and quantitative analysis of microcosmic for gas-liquid system diffusion process in porous medium, discloses the impact that pore texture distributes on diffusion process.MRI technology, as a kind of non-intruding measuring technology of brute force, can obtain the time dependent self-diffusion coefficient of fluid in porous medium by pulsed field gradient core magnetic resonance method.This technology can also be to permeability, and the parameters such as saturation degree realize visual and quantitative analysis, sets up the digital cores model of describing accurately porous medium inner structure.Double chamber pressure damped method is improved simultaneously, add magnetic suspension balance device, to realize the real-time monitoring to gas dissolution amount.
Effect of the present invention and benefit are: this device that utilizes mr imaging technique to detect gas-liquid diffusion process mainly comprises magnetic resonance imaging system and double chamber pressure attenuation factor, magnetic resonance imaging system is provided with a core holding unit in magnetic resonance imager, adopt pipeline to connect and compose closed circuit by the exocoel of reciprocating force (forcing) pump, liquid container and core holding unit, adopt confined pressure pump to keep the pressure in closed circuit; Entrance at core holding unit connects double chamber pressure attenuation factor, and outlet connects an electronics Libra and gatherer through a back pressure regulator; Magnetic resonance imager adopts and is electrically connected with data acquisition and processing (DAP) system.Said apparatus can the proton density image of real-time, directly perceived, undamaged measurement fluid in porous medium by MRI technology, vertical and horizontal relaxation time, apparent diffusion coefficient and diffusion tensor distributed image.To porous medium factor of porosity, permeability, the important parameters such as saturation degree can carry out quantitative test; Improved double chamber pressure damped method can reduce the probability of leakage, and can easily and accurately determine initial gas density; Magnetic suspension balance can be monitored in real time gas density and change, thereby makes up the deficiency of traditional double chamber pressure damped method.
brief description of the drawings
Fig. 1 is a kind of plant system drawing that utilizes nmr imaging technique to detect gas-liquid diffusion process.
In figure: 1, magnetic resonance imager, 2, magnetic suspension balance, 3, the standard titanium tank of weighing, 4, gas cylinder, 5a, the first injection pump, 5b, the second injection pump, 6a, the first intermediate receptacle, 6b, the second intermediate receptacle, 6c, the 3rd intermediate receptacle, 7a, 7b, 7q, the first needle-valve, the second needle-valve, the 17 needle-valve, 8a, the first retaining valve, 8b, the second retaining valve, 9, air constant temperature oven, 10, liquid container, 11, reciprocating force (forcing) pump, 12, confined pressure pump, 13a, first row liquid bath, 13b, second row liquid bath, 14, water tank, 15, back pressure regulator, 16, electronics Libra and gatherer, 17, data acquisition and processing (DAP) system, 18a, 18b, 18e, the first pressure unit, the second pressure unit, the 5th pressure unit, 19a, the first thermopair, 19b, the second thermopair, 19c, three thermocouple, 20, core holding unit.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with technical scheme and accompanying drawing.
Fig. 1 shows a kind of plant system drawing that utilizes nmr imaging technique to detect gas-liquid diffusion process.
In figure, this device that utilizes mr imaging technique to detect gas-liquid diffusion process mainly comprises a magnetic resonance imaging system, it also comprises a double chamber pressure attenuation factor, magnetic resonance imaging system is provided with a core holding unit 20 in magnetic resonance imager 1, adopt pipeline to connect and compose closed circuit by the exocoel of reciprocating force (forcing) pump 11, liquid container 10 and core holding unit 20, a confined pressure pump 12 adopts pipeline to be connected with liquid container 10, is provided with electric heater unit and attemperating unit in liquid container 10.Entrance at core holding unit 20 connects double chamber pressure attenuation factor, and outlet connects an electronics Libra and gatherer 16 through a back pressure regulator 15.Double chamber pressure attenuation factor comprises a liquid injection system and a gas injection system.Liquid injection system adopts the intermediate receptacle of the first injection pump 5a in air constant temperature oven 9 to be connected with the entrance of core holding unit 20, is connected a water tank 14 between the first injection pump 5a and intermediate receptacle.Gas injection system adopts the second injection pump 5b to be connected with the entrance of core holding unit 20 through magnetic suspension balance 2, is connected a gas cylinder 4 and the standard titanium tank of weighing between the second injection pump 5b and magnetic suspension balance 2.The standard titanium tank 3 of weighing is connected magnetic suspension balance 2 by pipeline with the tenth needle-valve 7j, the 11 needle-valve 7k, and magnetic suspension balance 2 is connected core holding unit 20 by pipeline with the 12 needle-valve 7l, the 13 needle-valve 7m.Intermediate receptacle in air constant temperature oven 9 adopts the first intermediate receptacle 6a, the second intermediate receptacle 6b and the 3rd intermediate receptacle 6c to be connected in parallel.Magnetic resonance imager 1 adopts and is electrically connected with data acquisition and processing (DAP) system 17.
Above-mentioned magnetic resonance imaging system is also provided with the pressure monitoring system of the first pressure unit 18a, the second pressure unit 18b, the 3rd pressure unit 18c, the 4th pressure unit 18d, the 5th pressure unit 18e.True core or artificial rock core are housed in core holding unit 20.Confined pressure pump 12, for core holding unit 20 provides confined pressure, utilizes the liquid container that fluorocarbon oil is equipped with in electric heating system heating to carry out temperature control, and described reciprocating force (forcing) pump provides the circulation power of fluorocarbon oil, realizes the required high-pressure temperature control environment of rock core.Utilize pressure monitoring system and temperature control system to make detection system reach required back pressure and temperature, and detect in real time rock core internal pressure; Recycling magnetic resonance imager carries out quantitative and qualitative analysis; Finally utilize outlet measuring apparatus to measure by liquids and gases volume or the quality of simulation core.The effect of magnetic suspension balance 2 is mainly carbon dioxide variable density in real-time monitoring system.
Improved double chamber pressure damped method detection system, mainly comprise the standard titanium tank 3 of weighing, electric heating temperature device, be arranged at the first intermediate receptacle 6a, the second intermediate receptacle 6b, the 3rd intermediate receptacle 6c in air constant temperature oven 9, pressure unit, data acquisition system (DAS) 17, gas cylinder 4 and the injected system that comprises the first injection pump 5a, water tank 14, the second injection pump 5b and the first retaining valve 8a, the second retaining valve 8b.The effect of titanium tank is the variation by measuring the nitrogen quality of substituting the bad for the good in advance, measures detection system cavity volume; Diffusion must vacuumize 24 hours by system with vacuum pump before detecting; Utilize electric heater unit and air constant temperature oven control pipeline and intermediate receptacle to reach temperature required; In water tank 14, there is deionized water, utilizes the first injection pump 5a to draw the deionized water in water tank 14, drive the first intermediate receptacle 6a, the second intermediate receptacle 6b, the 3rd intermediate receptacle 6c, to the hydraulic fluid (oil, water) that injects required pressure in rock core; In the second injection pump 5b, be full of desired gas by gas cylinder 4, recycling the second injection pump 5b is to the gas that is filled with required pressure in titanium tank 3, magnetic suspension balance 2 and core holding unit 20; Utilize pressure unit monitoring system pressure until reach equalized pressure; Utilize data acquisition system (DAS) to obtain and process related data.
The above-mentioned method of utilizing mr imaging technique to detect gas-liquid diffusion process comprises the following steps:
The first step, detects preliminary work.
(1) utilize gas to survey the factor of porosity of factor of porosity method mensuration rock core, by core holding unit 20, whether sealed at both endsly select according to detecting the axial or longitudinal coefficient of diffusion of specific requirement survey;
(2) connect detection system pipeline according to diagram, leak detection pressure testing, vacuumize 24 hours subsequently;
(3) calibration system volume.In titanium tank 3, inject a certain amount of nitrogen, and weigh.Open the tenth needle-valve 7j, the 11 needle-valve 7k, the 12 needle-valve 7l, the 13 needle-valve 7m, close other valves, the nitrogen in titanium tank is entered in magnetic suspension balance cavity and relevant pipeline.Can determine system cavity volume.Discharge nitrogen, vacuumize 1 hour;
(4) pipeline in system is twined with heating tape, adopt electrically heated method to preheat and temperature control.Inject fluorocarbon oil to liquid container 10, open reciprocating force (forcing) pump 11, circulating-heating rock core reaches and detects default temperature;
(5) the required solvent of saturated core such as Jiang Shui, oil, salt solution, and drive the required water of these solvents to inject the first intermediate receptacle 6a, the second intermediate receptacle 6b, the 3rd intermediate receptacle 6c, intermediate receptacle is positioned in air constant temperature oven 9 to realize temperature control.Open respectively the second needle-valve 7b, the 5th needle-valve 7e according to detecting the saturated solvent type needing, the 3rd needle-valve 7c, the 6th needle-valve 7f, or the 4th needle-valve 7d, the 7th needle-valve 7g, utilize the first injection pump 5a that water driving force is provided, by saturated the rock core in core holding unit 20.
Second step, starts to detect, and utilizes MRI technology to carry out dynamic and visual detection to solution-air diffusion process in porous medium.Open nine kinds of needles valve 7i, utilize the second injection pump 5b to inject a certain amount of working gas in titanium tank.Close nine kinds of needles valve 7i, open the tenth needle-valve 7j, the 11 needle-valve 7k, the 12 needle-valve 7l, start coefficient of diffusion test and detect, utilize back pressure regulator 5 to control back pressure.Inject situation gather proton images with magnetic resonance imager 1 gas-monitoring, record system pressure variation after gas inject with the first pressure unit 18a.Thus, not in the same time, porous medium diverse location is composed and is deposited proton density, longitudinal relaxation time, T2, the apparent diffusion coefficient distributed image of fluid and calculate required system pressure and the time changing curve etc. of coefficient of diffusion and will be obtained by data acquisition and processing (DAP) system 17.Detection of end in the time that system reaches balance, preserves and detects data, release, and removal of core, cleans clamper, repeats (1)-(4) in the first step, prepares for next group detects;
The 3rd step, testing result processing.Arrange and detect data, decline of pressure curve is carried out to analyzing and processing, set up that gas composes in porous medium that diffusion model in the liquid of depositing can calculate radially or axially and the coefficient of diffusion of one dimension or two dimension, calculate ensemble average coefficient of diffusion, gained coefficient of diffusion with gas the coefficient of diffusion in neat liquid compare, can obtain affecting the porous medium tortuosity coefficient that diffusion process is transmitted, thereby analyze the impact of porous medium tortuosity on coefficient of diffusion.Demarcate by the proton density image that MRI is obtained, obtain distributing along dispersal direction solution density gradient.The gas density recording according to magnetic suspension balance 2 changes, and calculates gas dissolution amount in conjunction with cavity volume, obtains the relation of gas dissolution amount and coefficient of diffusion.
Claims (1)
1. a method of utilizing mr imaging technique to detect gas-liquid diffusion process, the device that the method adopts mainly comprises a magnetic resonance imaging system and a double chamber pressure attenuation factor, described magnetic resonance imaging system is provided with a core holding unit (20) in magnetic resonance imager (1), adopt pipeline to connect and compose closed circuit by the exocoel of reciprocating force (forcing) pump (11), liquid container (10) and core holding unit (20), a confined pressure pump (12) adopts pipeline to be connected with liquid container (10); Connect described double chamber pressure attenuation factor at the entrance of core holding unit (20), outlet connects an electronics Libra and gatherer (16) through a back pressure regulator (15); Described double chamber pressure attenuation factor comprises a liquid injection system and a gas injection system; Described liquid injection system adopts the intermediate receptacle of the first injection pump (5a) in air constant temperature oven (9) to be connected with the entrance of core holding unit (20), is connected a water tank (14) between the first injection pump (5a) and intermediate receptacle; Described gas injection system adopts the second injection pump (5b) to be connected with the entrance of core holding unit (20) through magnetic suspension balance (2), is connected a gas cylinder (4) and the standard titanium tank (3) of weighing between the second injection pump (5b) and magnetic suspension balance (2); The described standard titanium tank (3) of weighing is connected magnetic suspension balance (2) by pipeline with the tenth needle-valve (7j), the 11 needle-valve (7k), and magnetic suspension balance (2) is connected core holding unit (20) by pipeline with the 12 needle-valve (7l), the 13 needle-valve (7m); Described magnetic resonance imager (1) adopts and is electrically connected with data acquisition and processing (DAP) system (17); Described liquid container is provided with electric heater unit and attemperating unit in (10); Described intermediate receptacle adopts the first intermediate receptacle (6a), the second intermediate receptacle (6b) and the 3rd intermediate receptacle (6c) to be connected in parallel; It is characterized in that: the method comprises the following steps:
(1) rock core is loaded into core holding unit (20), adopts gas to survey factor of porosity method and survey core porosity;
(2) in weighing titanium tank (3), standard injects a certain amount of nitrogen, and weigh, open successively the tenth needle-valve (7j), the 11 needle-valve (7k), the 12 needle-valve (7l), the 13 needle-valve (7m), close other valves, the nitrogen that standard is weighed in titanium tank (3) enters in magnetic suspension balance cavity and relevant pipeline, obtains system cavity volume by nitrogen quality total in system divided by density;
(3) pipeline in system is twined with heating tape, adopts electrically heated method to preheat and temperature control, inject fluorocarbon oil to liquid container (10), core holding unit (20) is preheated to 2 hours, and after detection starts temperature control in real time;
(4) utilize air constant temperature oven (9) to carry out temperature control to the first intermediate receptacle (6a), the second intermediate receptacle (6b), the 3rd intermediate receptacle (6c) that filling liquid is housed, and inject in advance rock core and carry out saturatedly, utilize and inject the liquid container (10) of fluorocarbon oil core holding unit (20) is carried out to loop temperature-control;
(5) inject working gas, start to detect, utilize pressure unit to record pressure and time relationship, the proton density, longitudinal relaxation time, T2, apparent diffusion coefficient and the diffusion tensor distributed image that utilize mr imaging technique to obtain not rock core diverse location in the same time to compose the fluid of depositing utilize the variation of magnetic suspension balance real time record gas density simultaneously;
(6) detect data processing, decline of pressure curve is carried out to analyzing and processing, set up that gas composes in rock core that diffusion model in the liquid of depositing calculates radially or axially and the coefficient of diffusion of one dimension or two dimension, calculate ensemble average coefficient of diffusion, demarcate by the proton density image that MRI is obtained, obtain distributing along dispersal direction solution density gradient, change according to the gas density of magnetic suspension balance record, and calculate gas dissolution amount in conjunction with cavity volume, obtain the relation of gas dissolution amount and coefficient of diffusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380112.5A CN102879306B (en) | 2012-10-10 | 2012-10-10 | Method for detecting gas-liquid diffusion processes by using magnetic resonance imaging (MRI) technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210380112.5A CN102879306B (en) | 2012-10-10 | 2012-10-10 | Method for detecting gas-liquid diffusion processes by using magnetic resonance imaging (MRI) technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102879306A CN102879306A (en) | 2013-01-16 |
| CN102879306B true CN102879306B (en) | 2014-12-10 |
Family
ID=47480714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210380112.5A Active CN102879306B (en) | 2012-10-10 | 2012-10-10 | Method for detecting gas-liquid diffusion processes by using magnetic resonance imaging (MRI) technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102879306B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344354B (en) * | 2013-07-01 | 2015-10-28 | 大连理工大学 | A kind of In-porous-medium fluid temperature visualization measurement mechanism |
| CN104390886B (en) * | 2014-11-20 | 2017-01-04 | 大连理工大学 | A kind of method utilizing mr imaging technique quickly to measure solution-air diffusion coefficient |
| CN104677806A (en) * | 2015-03-24 | 2015-06-03 | 苏州纽迈电子科技有限公司 | Nuclear magnetic resonance low-temperature pore analysis system |
| CN105021499B (en) * | 2015-07-08 | 2017-11-10 | 上海大学 | Utilize the method for visualizing of fluid diffusion in nuclear magnetic resonance evaluation porous media |
| CN105136603A (en) * | 2015-09-18 | 2015-12-09 | 武汉理工大学 | Method for detecting diffusion coefficient of water vapor in bituminous mixture |
| CN106124798A (en) * | 2016-06-14 | 2016-11-16 | 大连理工大学 | A kind of based on the method for convection current mixed process velocity field in NMR (Nuclear Magnetic Resonance)-imaging measurement porous media |
| CN106501286B (en) * | 2016-10-19 | 2019-04-09 | 大连理工大学 | A kind of device and method using sherwood number between gas-liquid in CT measurement porous media |
| CN107703029B (en) * | 2017-11-07 | 2019-05-10 | 大连理工大学 | A kind of combination CT and PVT calculating CO2The method of salt water dispersion coefficient |
| CN113075093B (en) * | 2021-03-29 | 2022-09-23 | 青岛科技大学 | Measuring method of gas-phase component mutual diffusion coefficient measuring device under very-temperature non-normal-pressure condition |
| CN113588704B (en) * | 2021-08-01 | 2023-10-27 | 西南石油大学 | Nuclear magnetic resonance signal separation method for immiscible fluid in core |
| CN113791101B (en) * | 2021-09-01 | 2023-03-24 | 大连理工大学 | Method for in-situ measurement of gas-liquid diffusion parameters in porous medium by nuclear magnetic resonance |
| CN113984587B (en) * | 2021-10-29 | 2022-10-11 | 大连理工大学 | In-situ measurement of CO in porous medium 2 Method of water diffusion coefficient |
| CN113984589B (en) * | 2021-11-01 | 2023-05-12 | 大连理工大学 | Method for calculating rock tortuosity and gas diffusion coefficient |
| CN114414438B (en) * | 2022-01-24 | 2024-01-26 | 中国矿业大学 | Identification method for detecting grouting diffusion range based on proton magnetometer |
| CN115165952B (en) * | 2022-07-11 | 2023-06-16 | 中国石油大学(华东) | Gas-water two-phase saturated rock core high-temperature high-pressure nuclear magnetic resonance experimental measurement method and device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE270431T1 (en) * | 1997-10-17 | 2004-07-15 | Univ California | SYSTEM AND METHOD FOR CHARACTERIZING GAS TRANSPORT PROPERTIES |
| US7107864B2 (en) * | 2003-01-15 | 2006-09-19 | General Motors Corporation | Quality control methods for gas diffusion media |
| SG131861A1 (en) * | 2005-10-11 | 2007-05-28 | Millipore Corp | Methods and systems for integrity testing of porous materials |
| CN101446189B (en) * | 2008-12-28 | 2011-08-10 | 大连理工大学 | Supercritical carbon dioxide drive physical analogue device |
| CN101458218B (en) * | 2008-12-28 | 2011-02-02 | 大连理工大学 | Carbon dioxide oil-displacing nmr imaging detection device |
-
2012
- 2012-10-10 CN CN201210380112.5A patent/CN102879306B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102879306A (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102879306B (en) | Method for detecting gas-liquid diffusion processes by using magnetic resonance imaging (MRI) technique | |
| CN103940722B (en) | The proving installation of a kind of gas bearing shale factor of porosity and absorption parameter and method | |
| CN106522934B (en) | Physical simulation experiment device and method for development of complex fractured reservoir horizontal well | |
| CN101458218B (en) | Carbon dioxide oil-displacing nmr imaging detection device | |
| CN108414560A (en) | A kind of method of the fine and close oily filling process of nuclear-magnetism-displacement combined apparatus evaluation | |
| CN103018153B (en) | Evaluation method for end part effects of seepage flow field | |
| CN108627533A (en) | Fluid employs the nuclear magnetic resonance experiment method and device of feature in a kind of measurement porous media | |
| CN107807143A (en) | The special low-field nuclear magnetic resonance Multi probe quantitative testing system of hydrate and method | |
| CN104749652B (en) | Real-time online Quantitative Physical Simulation oil migration path device and method | |
| CN107314950B (en) | A method of measurement carbon dioxide diffusion coefficient in porous media | |
| CN111537549B (en) | Carbon dioxide flooding, storing and fracturing device with continuously-changed phase state and experimental method | |
| CN104237099A (en) | Device and method for determining radial permeability of compact rock core | |
| CN210264648U (en) | Multifunctional rock core displacement device | |
| CN109187615A (en) | Rock nano aperture apparatus for measuring distribution and method under a kind of condition of formation pressure | |
| CN203929557U (en) | A kind of gas bearing shale crack develops and seepage flow characteristics proving installation | |
| CN105784567B (en) | A kind of device and method of testing rock core relative permeability | |
| CN107703037A (en) | For HTHP Natural Gas Migration And Accumulation visual detection device and method | |
| CN103018134A (en) | Device and method for determination of oil gas minimum miscibility pressure through magnetic resonance imaging technology | |
| CN103900755A (en) | Device and method for measuring minimum miscibility pressure of oil and gas through CT | |
| CN209821099U (en) | Multifunctional compact gas reservoir dynamic parameter joint measurement device based on nuclear magnetic resonance | |
| CN203929583U (en) | The proving installation of a kind of gas bearing shale factor of porosity and absorption parameter | |
| US20230131487A1 (en) | High-temperature and high-pressure drilling fluid inhibition evaluation device and usage method thereof | |
| CN105548465B (en) | A kind of on-line measuring device of displacement of reservoir oil foaming properties | |
| CN110082388A (en) | The Triaxial tester and its method of thermal coefficient and infiltration coefficient can be measured | |
| CN104914017B (en) | One kind utilizes CO in CT technology for detection porous medias2The method of disperse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |