CN203929685U - A kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus - Google Patents
A kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus Download PDFInfo
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- CN203929685U CN203929685U CN201420357657.9U CN201420357657U CN203929685U CN 203929685 U CN203929685 U CN 203929685U CN 201420357657 U CN201420357657 U CN 201420357657U CN 203929685 U CN203929685 U CN 203929685U
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Abstract
The utility model discloses a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus, load control device is connected with sample visual inspection device by pipeline, fluid control device is connected with the core holding unit in sample visual inspection device by fluid flow in pipes, axial compression sensor in data acquisition processing device, confined pressure sensor is arranged on respectively load control device axis press pump, confined pressure pump is connected on pipeline with core holding unit, left part hydraulic pressure sensor in data acquisition processing device, right part hydraulic pressure sensor is connected to left part salt water injection pump in fluid control device and is connected on pipeline with core holding unit with right part salt water injection pump, gas injection pressure sensor in data acquisition processing device, flowmeter is connected to CO2 injection pump in fluid control device and is connected on pipeline with core holding unit.The Distortion Disciplinarian of migration rule, reservoir and the cap rock of the CO2 under research different temperatures, different vertical stress and varying level stress condition in reservoir and cap rock.
Description
Technical field
The utility model relates to a kind of model test apparatus, relate in particular to a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus, it is applicable to CO2 geological storage process under Reality simulation environment, also for studying under different temperatures, different primary stress condition CO2 at the migration rule of reservoir and cap rock and the Distortion Disciplinarian of reservoir and cap rock.
Background technology
CO2 geological storage technology is the very effective greenhouse-gas control means of current one.A large amount of CO2 injects stratum can cause the increase of pore pressure, thereby causes the reduction of rock mass effective stress, and meanwhile, the variation of effective stress can affect porosity, permeability and the capillary pressure of rock mass conversely, and then the migration of CO2 is exerted an influence.In the interactional process of this seepage flow-mechanics, likely cause a series of mechanics problems such as unstability, the activation of tomography of cap rock, also may cause the leakage of CO2 simultaneously, therefore, research CO2 has important engineering significance at the Distortion Disciplinarian of storage, migration rule in cap rock and storage, cap rock rock mass.
At present concentrate on numerical simulation aspect for the research great majority of the problems referred to above, and research is very few aspect shop experiment.Nuclear magnetic resonance technique mainly concentrates on the two-phase fluid displacement test of rock core yardstick in the research aspect CO2 geological storage, less for the test of considering mechanics influence, and the test that simulation storage simultaneously, cap rock device deformation failure and seepage flow change there is no.
Summary of the invention
The purpose of this utility model is the deficiency in order to overcome current research means, to be to provide a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus, the utility model is for the interactional mechanism research of CO2 geological storage seepage flow-mechanics, particularly, the Distortion Disciplinarian of migration rule, reservoir and the cap rock of the CO2 under research different temperatures, different vertical stress and varying level stress condition in reservoir and cap rock.By the visual means of nuclear magnetic resonance, can observe the process of deformation and failure of CO2 at storage, migration process in cap rock device and storage, cap rock, simultaneously, can study the variation of rock mass porosity, saturation degree, permeability and capillary pressure etc. in CO2 injection process and the deformation displacement of storage cap rock, research maximum is allowed injection pressure, mechanical stability and the integrality of research storage, cap rock (containing tomography), provide a kind of new research means for the seepage flow-mechanics of heightened awareness CO2 geological storage process interacts.
in order to realize above-mentioned object, the utility model adopts following technical measures:
Its technical conceive:
1, sample is built with analog material, is shaped as rectangular parallelepiped, is divided into upper, middle and lower-ranking, and centre is reservoir, and upper and lower part is divided into cap rock, and keeps symmetrical, sample eccentric bending while preventing from applying xial feed.In process of the test, specimen surface is fastening with heat-shrinkable T bush parcel pyrocondensation, prevents that fluid from forming surface stream.Specimen shape as shown in Figure 1.
2, the confined pressure circulating heater of design temperature and the confined pressure of adjusting sample simultaneously, with reservoir pressure that is virtually reality like reality and temperature; The horizontal charger of design can apply different horizontal loadings to sample, to simulate different horizontal tectonics stress.
3, the salt water injection pump on left and right both sides provides level pressure or constant flow boundary condition to the left and right end of sample, CO2 injection pump injects CO2 toward reservoir, and records integrated flow and injection pressure trend over time in injection process with flow sensor and pressure transducer.
4, with the migration of nuclear magnetic resonance technique observation CO2 and the deformation failure of storage cap rock, and by inverting determine the porosity, permeability, capillary pressure, saturation degree of sample, respectively to the isoparametric variation of displacement.
A kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus, it is made up of sample visual inspection device, load control device, fluid control device and data acquisition processing device, annexation between each device is: load control device is connected with sample visual inspection device by pipeline, and axial compression and the confined pressure that need to be applied on sample are provided to the core holding unit in visual inspection device by pipeline; Fluid control device is connected with the core holding unit in sample visual inspection device by fluid flow in pipes, by core holding unit to the required salt water of sample injection test and CO2; Axial compression sensor in data acquisition processing device, confined pressure sensor are arranged on respectively on the pipeline that load control device axis press pump, confined pressure pump be connected with core holding unit, and the pressure of monitoring axial compression pump, confined pressure pump is also passed to information acquisition card by data line by force value; Left part hydraulic pressure sensor in data acquisition processing device, right part hydraulic pressure sensor are connected on the pipeline that in fluid control device, left part salt water injection pump is connected with core holding unit with right part salt water injection pump, and the pressure of monitoring left part hydraulic pressure sensor, right part hydraulic pressure sensor is also passed to information acquisition card by data line by force value; Gas injection pressure sensor in data acquisition processing device, flowmeter are connected on the pipeline that in fluid control device, CO2 injection pump is connected with core holding unit, and pressure and the flow that monitoring CO2 injection pump injects also passed to information acquisition card by data line by force value; Differential pressure gauge two ends in data acquisition processing device are connected on the pipeline that left part salt water injection pump is connected with core holding unit with right part salt water injection pump, monitor the difference of the hydrodynamic pressure injecting at left and right two ends, and the pressure differential recording is passed to information acquisition card.Nuclear magnetic resonance analyser in sample visual inspection device is by the computer in data line connection data acquisition processing device.
Sample visual inspection device comprises: sample, core holding unit, thermal shrinkable sleeve, cushion block, nuclear magnetic resonance analyser.Annexation is: sample keeps the consistent adjacent docking of center line with cushion block.Thermal shrinkable sleeve is enclosed within sample and the outer pyrocondensation of cushion block is fastening.Thermal shrinkable sleeve, sample and cushion block are inserted in specimen holder.Specimen holder is placed horizontally in the probe coil of nuclear magnetic resonance analyser.Core holding unit by cushion block to test exert pressure axle pressure or injected media.Thermal shrinkable sleeve prevents from forming surface stream.Nuclear magnetic resonance analyser is for observing the migration of fluid at sample.
Load control device comprises: axial compression pump, confined pressure pump, temperature control circulator.Axial compression pump is for applying horizontal applied force to sample, axial compression pump with confined pressure pump without being directly connected, axial compression pump with temperature control circulator without being directly connected.Confined pressure pump is for applying hoop acting force to sample.Temperature control circulator is connected by pipeline with confined pressure pump, by controlling the medium temperature in pipeline, under permanent confined pressure condition, provides different temperature conditions to sample.
Fluid control device comprises: left part salt water injection pump, right part salt water injection pump, CO2 injection pump, fluid attemperating unit, its annexation is: left part salt water injection pump is connected by salt water flow in pipes with core holding unit.Right part salt water injection pump is connected by salt water flow in pipes with core holding unit.CO2 injection pump is connected by CO2 flow in pipes with core holding unit.Fluid attemperating unit is connected with left part salt water injection pump, right part salt water injection pump and CO2 injection pump respectively by water back.Left part salt water injection pump and right part salt water injection pump apply constant voltage or constant flow boundary condition to respectively the left and right two ends of sample, CO2 injection pump injects the process of CO2 with simulation supercritical CO 2 displacement salt water toward the reservoir bottom of sample, fluid attemperating unit is for controlling the temperature of whole ambient fluid pipeline.
Data acquisition processing device comprises: axial compression sensor, confined pressure sensor, left part hydraulic pressure sensor, right part hydraulic pressure sensor, gas injection pressure sensor, flowmeter, differential pressure gauge, information acquisition card, computer, its annexation is: axial compression sensor, confined pressure sensor, left part hydraulic pressure sensor, right part hydraulic pressure sensor, gas injection pressure sensor, flowmeter and differential pressure gauge are connected with information acquisition card by data line respectively, and information acquisition card is connected with computer by data line.Axial compression sensor imposes on the acting force of sample for monitoring axial compression pump, and the pressure recording is passed to information acquisition card.Confined pressure sensor imposes on the acting force of sample for monitoring confined pressure pump, and the pressure recording is passed to information acquisition card.Left part hydraulic pressure sensor and right part hydraulic pressure sensor are respectively used to monitor the hydrodynamic pressure that left part salt water injection pump and right part salt water injection pump inject to the left and right two ends of sample respectively, and the pressure recording is passed to information acquisition card.Gas injection pressure sensor and flowmeter are respectively used to monitor CO2 pressure and the flow that CO2 injection pump injects to sample, and by the pressure recording and pass traffic to information acquisition card.Differential pressure gauge is for the difference of the hydrodynamic pressure of monitoring left part salt water injection pump and right part salt water injection pump and injecting to the left and right two ends of sample respectively, and the pressure differential recording is passed to information acquisition card.Information acquisition card is for concentrating pressure or the flow value of axial compression sensor, confined pressure sensor, left part hydraulic pressure sensor, right part hydraulic pressure sensor, gas injection pressure sensor, flowmeter and differential pressure gauge monitoring, the unified computer that sends to.Computer is for recording and show pressure or the flow value of axial compression sensor, confined pressure sensor, left part hydraulic pressure sensor, right part hydraulic pressure sensor, gas injection pressure sensor, flowmeter and differential pressure gauge monitoring.
The utlity model has following advantage and good effect:
(1) can provide the test condition of approaches engineering reality.Sample design becomes stratiform with simulated field storage, cover rocks; Confined pressure and axial compression device are to simulate initially stress condition; Temperature control circulating device can simulated field formation temperature conditions; Salt water injection pump can simulated field the boundary condition of seepage flow; Gas injection pump can simulated field level pressure inject or constant flow injection mode.
(2) non-destructive monitoring.Nuclear magnetic resonance analyser can utilize the nmr phenomena of hydrogen atom in hydrone to observe the migration phenomenon of water in sample, thereby can observe the process of deformation and failure of migration, reservoir and the cap rock of CO2; In addition by utilizing relaxation time spectrum and the nuclear magnetic signal intensity of hydrogen atom, can inverting two phase saturations, permeability, capillary pressure etc.Above-mentioned observation process, without destroying sample, can complete under normal test condition.
(3) can simulate seepage flow-Coupling with Mechanics process.The injection of CO2 causes the variation of storage, effective seal rock stress, and then causes that it deforms, and meanwhile, the ess-strain of storage, cap rock also can exert an influence to the migration of CO2.The utility model had both comprised load control device, comprised again fluid control device, can simulate the interactional process of seepage flow-mechanics simultaneously.
(4) can consider the geologic body such as tomography, crack.Sample, by manually building and form, therefore, can comprise the geologic body such as tomography, crack in storage, cap rock.
(5) there is several functions.Research CO2 migration rule and storage overburden deformation failure law; The control of research gas injection pressure; Research storage, cap rock and tomography stability; Research CO2 geological storage capacity etc.
In a word, the utility model has very strong applicability aspect the research of CO2 geological storage mechanism, meanwhile, due to can real simulation on-the-spot physical condition, therefore, also has engineering using value.
Brief description of the drawings
Fig. 1 is a kind of structural representation of sample.
Fig. 2 is a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus schematic diagram.
Fig. 3 is a kind of core holding unit skiagraph schematic diagram.
Fig. 4 is that a kind of one-piece construction master of core holding unit looks schematic diagram.
Fig. 5 is a kind of structural representation of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus.
Fig. 6 is the concrete structure schematic diagram of Fig. 5.
In figure:
1000-sample visual inspection device:
1100-sample, 1101-sample cap rock, 1102-sample reservoir 1103-sample cap rock 1200-core holding unit, 1300-thermal shrinkable sleeve, 1500-nuclear magnetic resonance analyser (MacroMR12-150H)
2000-load control device:
2100-axial compression pump (ISCO-65D volume pump), 2200-confined pressure pump (ISCO-E500 volume pump), 2300-temperature control circulator (thermostatic oil bath FC94Y)
3000-fluid control device:
3100-left part salt water injection pump (ISCO-E500 volume pump), 3200-right part salt water injection pump (ISCO-E500 volume pump), 3300-CO2 injection pump (ISCO-260D volume pump), 3400-fluid attemperating unit (FC300A Water Tank with Temp.-controlled)
4000-data acquisition processing device:
4100-axial compression sensor, (SETRA-C20450cpgg311e2s00) 4200-confined pressure sensor, (SETRA-C20450cpgg311e2s00) 4300-left part hydraulic pressure sensor, (SETRA-C20450cpgg311e2s00) 4400-right part hydraulic pressure sensor, (SETRA-C20450cpgg311e2s00) 4500-gas injection pressure sensor, (SETRA-C20450cpgg311e2s00) 4600-flowmeter, (Bronkhorst-M13-IP65) 4700-differential pressure gauge, 4800-information acquisition card, 4900-computer.
Embodiment
Embodiment 1:
A kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus, formed by sample visual inspection device 1000, load control device 2000, fluid control device 3000 and data acquisition processing device 4000, its annexation is: load control device 2000 is connected with sample visual inspection device 1000 by pipeline, and axial compression and the confined pressure that need to be applied on sample 1100 are provided to the core holding unit 1200 in visual inspection device 1000 by pipeline.Fluid control device 3000 is connected with sample downstream water injection hole 1203, sample downstream water injection hole 1205 and the CO2 filling orifice 1220 of the core holding unit 1200 in sample visual inspection device 1000 by fluid flow in pipes, by core holding unit 1200 to sample 1100 injection tests required salt water and CO2.Axial compression sensor 4100 in data acquisition processing device 4000, confined pressure sensor 4200 are arranged on respectively on the pipeline that load control device 2000 axis press pumps (2100), confined pressure pump 2200 are connected with core holding unit 1200, and the pressure of monitoring axial compression pump 2100, confined pressure pump 2200 is also passed to information acquisition card 4800 by data line by force value.Left part hydraulic pressure sensor 4300 in data acquisition processing device 4000, right part hydraulic pressure sensor 4400 are connected on the pipeline that in fluid control device 3000, left part salt water injection pump 3100 is connected with core holding unit 1200 with right part salt water injection pump 3200, and the pressure of monitoring left part hydraulic pressure sensor 4300, right part hydraulic pressure sensor 4400 is also passed to information acquisition card 4800 by data line by force value.Gas injection pressure sensor 4500 in data acquisition processing device 4000, flowmeter 4600 are connected on the pipeline that in fluid control device 3000, CO2 injection pump 3300 is connected with core holding unit 1200, and pressure (pressure limit 0-25MPa) and the flow that monitoring CO2 injection pump 3300 injects also passed to information acquisition card 4800 by data line by force value.Differential pressure gauge 4700 in data acquisition processing device 4000, two ends are connected on the pipeline that left part salt water injection pump 3100 is connected with core holding unit 1200 with right part salt water injection pump 3200, monitor the difference of the hydrodynamic pressure injecting at left and right two ends, and the pressure differential recording is passed to information acquisition card 4800.Nuclear magnetic resonance analyser 1500 in sample visual inspection device 1000 is by the computer 4900 in data line connection data acquisition processing device 4000.
Sample visual inspection device 1000 comprises: sample 1100, core holding unit 1200, thermal shrinkable sleeve 1300, nuclear magnetic resonance analyser 1500, its annexation is: sample 1100 is placed in core holding unit 1200, keeps the consistent adjacent docking of center line with sample upstream cushion block 1215, sample downstream cushion block 1217.It is fastening that thermal shrinkable sleeve 1300 is enclosed within sample upstream cushion block 1215, sample 1100 and the 1217 outer pyrocondensations of sample downstream cushion block.Thermal shrinkable sleeve 1300, sample 1100 and sample upstream cushion block 1215, sample downstream cushion block 1217 are inserted in specimen holder 1200.Specimen holder 1200 is placed horizontally in the probe coil of nuclear magnetic resonance analyser 1500.Core holding unit 1200 by sample upstream cushion block 1215, sample downstream cushion block 1217 to exert pressure axle pressure or inject salt water of sample 1100.Thermal shrinkable sleeve 1300 prevents from forming surface stream.Nuclear magnetic resonance analyser 1500 is for observing the migration of fluid at sample 1100.
Core holding unit 1200 comprises: clamper end cap 1201, fixing stifled 1202, sample downstream water injection hole 1203, stack shell 1204, sample upstream water injection hole 1205, oil cylinder downstream oil hole 1206, oil cylinder upstream oil hole 1207, cylinder cover 1208, displacement transducer pillar 1209, WYDC-10L type pressure lever type displacement transducer 1210(range 10mm, precision ± 0.1%F.S, size ф 20 × 205mm), O-ring seal 1211, oil cylinder 1212, piston 1213, circulation fluid force feed import 1214, sample upstream cushion block 1215, sample downstream cushion block 1217, circulation fluid force feed outlet 1218, bolt 1219, CO2 filling orifice 1220.
The concrete connected mode of core holding unit 1200 is as follows:
1. clamper end cap 1201 is connected with fixing stifled 1202 use bolts 1219.Circulation fluid force feed outlet 1218 perforates for fixing stifled 1202 inside, fixing stifled 1202 are threaded with stack shell 1204 use.Stack shell 1204 is threaded with oil cylinder 1212 use.Oil cylinder downstream oil hole 1206, oil cylinder upstream oil hole 1207 and circulation fluid force feed import 1214 are the perforate of oil cylinder 1212 inside, oil cylinder 1212 is threaded with cylinder cover 1208 use, and sealed by O-ring seal 1211, sample upstream water injection hole 1205 is the perforate of cushion block 1215 inside, sample upstream.Sample upstream cushion block 1215 directly inserts piston 1213 and connects, and sample downstream water injection hole 1203 is the perforate of cushion block 1217 inside, sample downstream.Sample downstream cushion block 1217 directly inserts clamper end cap 1201 and connects.Core sample 1100 is placed between sample upstream cushion block 1215 and sample downstream cushion block 1217, and upstream cushion block 1215, core sample 1100 and downstream cushion block 1217 center lines are consistent, and then put outside heat-shrink tube, and it is fastening to make it pyrocondensation with heat gun.Displacement transducer pillar 1209 is threaded with piston 1213 use.Displacement transducer pillar 1209 clamps and is connected with pressure lever type displacement transducer 1210 use.
2. stack shell 1204, sample upstream cushion block 1215 and sample downstream cushion block 1217 all adopt without the high-strength PEEK materials processing of nuclear magnetic signal and form, can transmit enough loads, nuclear magnetic signal in again can interference experiment process, other parts are stainless steel material and process.Sample downstream cushion block 1217 and sample upstream cushion block 1215 are positioned at the left and right two ends of sample 1100, and centre is processed with sample downstream water injection hole 1203 and sample upstream water injection hole 1205, and are carved with circumferential groove on it presses close to the transverse plane of sample 1100.Downstream water injection hole 1203 is connected with right part salt water injection pump 3200 with left part salt water injection pump 3100 with sample upstream water injection hole 1205 use pipelines.Therefore, downstream water injection hole 1203 and sample upstream water injection hole 1205 can be used to transmit xial feed and apply hole, border pressure to sample 1100.
3. circulation fluid force feed import 1214 is connected with external heating, pressurized circulation device with circulation fluid force feed outlet 1218, applies confined pressure can to sample 1100 and control temperature.Oil cylinder upstream oil hole 1207 is connected with external pump, inject oil body toward oil cylinder 1212, when promotion piston 1213 advances, apply xial feed to core sample 1100 by sample upstream cushion block 1215, simultaneous displacement sensor strut 1209 and pressure lever type displacement transducer 1210 are followed piston 1213 and are moved, and measure the axial deformation of core sample 1100.; Oil cylinder downstream oil hole 1206 is connected with external pump, can be used for promoting piston 1213 backhauls, in addition, advances while applying axial compression to core sample 1100 at piston 1213, and oil cylinder downstream oil hole 1206 also can be used to get rid of oil body.Sample downstream water injection hole 1203, sample upstream water injection hole 1205 are connected with external pump, press boundary condition for injecting fluid to core sample 1100 or applying hole, sample upstream water injection hole 1205 use of oil cylinder 1212 and cushion block 1215 the insides, sample upstream are connected without the PEEK pipe of nuclear magnetic signal; CO2 filling orifice 1220 is with sample upstream water injection hole 1205, the import 1214 of circulation fluid force feed in identical section, and three's shape is identical.
4. sample upstream cushion block 1215 is all processed into barrel band form with the afterbody of sample downstream cushion block 1217, inserts respectively in the groove of clamper end cap 1201 and piston 1213, can freely dismantle and install; Sample upstream cushion block 1215 can be processed into circular or square with the main part of sample downstream cushion block 1217, variable-length is moving, for the sample of difformity and size, in addition, the xsect of main part is larger than afterbody xsect, is used for the xial feed that loading piston 1213 applies.
Load control device 2000 comprises: axial compression pump 2100, confined pressure pump 2200, temperature control circulator 2300, its annexation is: axial compression pump 2100 is for applying the axle pressure of 0 ~ 330kN to sample 1100, axial compression pump 2100 is with confined pressure pump 2200 without being directly connected, and axial compression pump 2100 is directly connected with temperature control circulator 2300 nothings.Confined pressure pump 2200 is for applying hoop acting force to sample 1100.Temperature control circulator 2300 is connected by pipeline with confined pressure pump 2200, by controlling the medium temperature in pipeline, different temperature conditions is provided under permanent confined pressure condition, to sample 1100.
Fluid control device 3000 comprises: left part salt water injection pump 3100, right part salt water injection pump 3200, CO2 injection pump 3300, fluid attemperating unit 3400, its annexation is: left part salt water injection pump 3100, right part salt water injection pump 3200, CO2 injection pump 3300, fluid attemperating unit 3400, annexation is: the sample downstream water injection hole 1203 of left part salt water injection pump 3100 and core holding unit 1200 is connected by salt water flow in pipes.The sample upstream water injection hole 1205 of right part salt water injection pump 3200 and core holding unit 1200 is connected by salt water flow in pipes.The CO2 filling orifice 1220 of CO2 injection pump 3300 and core holding unit 1200 is connected by CO2 flow in pipes.Fluid attemperating unit 3400 is connected with left part salt water injection pump 3100, right part salt water injection pump 3200 and CO2 injection pump 3300 respectively by water back.Left part salt water injection pump 3100 and right part salt water injection pump 3200 apply constant voltage or constant flow boundary condition to respectively the left and right two ends of sample 1100, CO2 injection pump 3300 injects the process of CO2 with simulation supercritical CO 2 displacement salt water toward the reservoir bottom of sample 1100, fluid attemperating unit 3400 is for controlling the temperature of whole ambient fluid pipeline.
Data acquisition processing device 4000 comprises: axial compression sensor 4100, confined pressure sensor 4200, left part hydraulic pressure sensor 4300, right part hydraulic pressure sensor 4400, gas injection pressure sensor 4500, flowmeter 4600, differential pressure gauge 4700, information acquisition card 48, computer 49, its annexation is: axial compression sensor 4100, confined pressure sensor 4200, left part hydraulic pressure sensor 4300, right part hydraulic pressure sensor 4400, gas injection pressure sensor 4500, flowmeter 4600 is connected with information acquisition card 4800 by data line respectively with differential pressure gauge 4700, information acquisition card 4800 is connected with computer 4900 by data line.Axial compression sensor 4100 imposes on the acting force of sample 1100 for monitoring axial compression pump 2100, and the pressure recording is passed to information acquisition card 4800.Confined pressure sensor 4200 imposes on the acting force of sample 1100 for monitoring confined pressure pump 2200, and the pressure recording is passed to information acquisition card 4800.Left part hydraulic pressure sensor 4300 and right part hydraulic pressure sensor 4400 are respectively used to monitor the hydrodynamic pressure that left part salt water injection pump 3100 and right part salt water injection pump 3200 inject to the left and right two ends of sample 1100 respectively, and the pressure recording is passed to information acquisition card 4800.Gas injection pressure sensor 4500 and flowmeter 4600 are respectively used to monitor CO2 pressure and the flow that CO2 injection pump 3300 injects to sample 1100, and by the pressure recording and pass traffic to information acquisition card 4800.Differential pressure gauge 4700 is for the difference of the hydrodynamic pressure of monitoring left part salt water injection pump 3100 and right part salt water injection pump 3200 and injecting to the left and right two ends of sample 1100 respectively, and the pressure differential recording is passed to information acquisition card 4800.Pressure or the flow value of information acquisition card 4800 for concentrating axial compression sensor 4100, confined pressure sensor 4200, left part hydraulic pressure sensor 4300, right part hydraulic pressure sensor 4400, gas injection pressure sensor 4500, flowmeter 4600 and differential pressure gauge 4700 to monitor, the unified computer 4900 that sends to.Computer 4900 is for recording and showing pressure or the flow value that axial compression sensor 4100, confined pressure sensor 4200, left part hydraulic pressure sensor 4300, right part hydraulic pressure sensor 4400, gas injection pressure sensor 4500, flowmeter 4600 and differential pressure gauge 4700 are monitored.
The utility model, for the mechanism research of seepage flow-mechanics interaction process of CO2 geological storage, is elaborated to concrete operations flow process in conjunction with Fig. 5, Fig. 6:
1. configure analog material, and build into rectangular parallelepiped sample 1100, vapor cure sample reaches after the intensity of regulation, sample is put into vacuum drying chamber and vacuumize dry.
2. connect the ascending pipe joint of sample 1100 each positions, coat fluid sealant on four water chestnut limits of sample, then put heat-shrink tube 1300 to sample, and with hair dryer make heat-shrink tube pyrocondensation be shaped, be close to sample.
3. sample 1100 is packed into specimen holder 1200, be placed between sample upstream cushion block 1215 and sample downstream cushion block 1217, open F2 and F3, sample is applied to a less axial compression with axial compression pump 2100, ensure that sample can closely be connected with the sample upstream cushion block 1215 of core holding unit 1200 the insides, sample downstream cushion block 1217 in the time keeping flat.
4. open F4 and F7, close F5 and F6, in specimen holder 1200, inject fluorocarbon oil by the circulation fluid force feed import 1214 of clamper 1200 with confined pressure pump 2200, and to control confined pressure be certain fixed value.
5. open F5 and F6, ON cycle temperature controller 2300, constantly circulating-heating, until the temperature of circulating device reaches certain fixed value.
6. regulating shaft press pump 2100, increases axle pressure and also remains certain fixed value, and by the initial displacement value of displacement transducer recording and analyses.
7. regulate fluid attemperating unit 3400, left part salt water injection pump 3100, right part salt water injection pump 3200, CO2 injection pump 3300 and fluid pipe device are heated to certain value and keep constant.
8. open F12, F14, F17 and F20, close F15, F18 and F19, slowly inject NaCl solution from one end of sample 1100 with left part salt water injection pump (3100), and open nuclear magnetic resonance analyser 1500 simultaneously and monitor the variation of nuclear magnetic signal intensity, after the nuclear magnetic signal Strength retention of whole sample is constant, after being the saturated NaCl solution of sample, open F15, regulate left part salt water injection pump 3100 and right part salt water injection pump 3200 pressure to a certain fixed value, and keep both the pressure of trying one's best to equate.Open F18 and F19, close F15, measure two ends pressure reduction with differential pressure gauge 4700, constantly regulate two ends salt water injection pump, the reading that makes differential pressure gauge is zero.
9. inject CO2 with constant voltage mode or constant flow pattern toward reservoir with CO2 injection pump 3300, record injection process integrated flux with gas injection pressure sensor 4500 and flowmeter 4600 and press change procedure with injecting; With the displacement of displacement transducer recording and analyses.
10. record CO2 migration process and the storage overburden deformation destructive process of whole injection process by nuclear magnetic resonance analyser 1500.
Below in conjunction with accompanying drawing, relevant functional part is elaborated:
One, sample visual inspection device 1000:
Sample visual inspection device 1000 comprises: sample 1100, specimen holder 1200, thermal shrinkable sleeve 1300, nuclear magnetic resonance analyser 1500.
1, sample 1100:
As shown in Figure 1, sample is rectangular structure, is divided into upper, middle and lower-ranking with storage, cap rock device in simulation Practical Project, and sample is built and formed with analog material, can in sample, build tomography, crack.
2, specimen holder 1200:
As Fig. 3, Fig. 4, core holding unit 1200 comprises: hold device end cap 1201, fixing stifled 1202, sample downstream water injection hole 1203, stack shell 1204, sample upstream water injection hole 1205, oil cylinder downstream oil hole 1206, oil cylinder upstream oil hole 1207, cylinder cover 1208, displacement transducer pillar 1209, WYDC-10L type pressure lever type displacement transducer 1210(range 10mm, precision ± 0.1%F.S, size ф 20 × 205mm), O-ring seal 1211, oil cylinder 1212, piston 1213, circulation fluid force feed import 1214, sample upstream cushion block 1215, sample downstream cushion block 1217, circulation fluid force feed outlet 1218, bolt 1219, CO2 filling orifice 1220.Clamper stack shell 1204 and sample upstream cushion block 1215, sample downstream cushion block 1217 are all formed by the PEEK materials processing without nuclear magnetic signal, and other parts are all stainless steel material; Clamper stack shell 1204 with fixing stifled 1202 and piston oil-cylinder 1212 between adopts and is threaded, fixing stifled 1202 and left part end cap 1201 with bolts; Gap between clamper stack shell 1204 and sample upstream cushion block 1215, sample downstream cushion block 1217 is full of the fluorocarbon oil without nuclear magnetic signal, is used for applying confined pressure and heating to sample 1100; Piston 1213 can left and right movement apply xial feed to sample 1100; Displacement transducer 1210 is connected with piston 1213 use one elongate rod, can measure the displacement of piston 1205 in CO2 injection process; In addition, fixing stifled 1202 and piston oil-cylinder 1212 the insides be processed with pore, be used for injecting CO 2, note salt water and note fluorocarbon oil.
3, thermal shrinkable sleeve 1300:
As shown in Figure 5, thermal shrinkable sleeve 1300 is enclosed within sample 1100 and sample upstream cushion block 1215, cushion block 1217 surfaces, sample downstream, makes thermal shrinkable sleeve 1300 pyrocondensations fastening with heat gun, prevents that the fluorocarbon oil for applying confined pressure from mixing with the fluid of sample 1100.
5, nuclear magnetic resonance analyser 1500:
As shown in Figure 4, nuclear magnetic resonance analyser 1500 probes are the penetrating cylindrical drum in left and right, and specimen holder 1200 is filled in the middle of cylinder.Utilize nuclear magnetic resonance analyser 1500 to test relaxation time and the nuclear magnetic signal intensity of hydrogen atom, according to the correlativity of characteristic nmr and factor of porosity, saturation degree, permeability, flow velocity, capillary pressure etc., measure the variation of parameters in CO2 injection process, utilize nmr imaging technique, the deformation failure of the migration of visual inspection CO2 and storage, cap rock simultaneously.
Two, load control device 2000:
Load control device 2000 comprises: axial compression pump 2100, confined pressure pump 2200, temperature control circulator 2300.
As shown in Figure 4, temperature control circulator 2300 is connected with confined pressure pump 2200, and the former has circulating fluid (fluorocarbon oil) and convection cell (fluorocarbon oil) concurrently and carry out the function of temperature control heating, and latter is the device that applies confined pressure.Confined pressure pump 2200 and axial compression pump 2100 are all precision metering pump, can realize constant flow loading and constant voltage and load.
Three, fluid control device 3000:
Fluid control device 3000 comprises: left part salt water injection pump 3100, right part salt water injection pump 3200, CO2 injection pump 3300, fluid attemperating unit 3400.
As shown in Figure 4, left part salt water injection pump 3100, right part salt water injection pump 3200 and CO2 injection pump 3300 are all precision metering pump, adopt level pressure or constant flow mode to inject fluid, the temperature of three volume pumps and whole pipe valve device is regulated by fluid attemperating unit 3400, and this device adopts the mode of heating water bath.
Four, data acquisition processing device 4000:
Data acquisition processing device 4000 comprises: axial compression pressure transducer 4100, confined pressure sensor 4200, left part hydraulic pressure sensor 4300, right part hydraulic pressure sensor 4400, gas injection pressure sensor 4500, flowmeter 4600, differential pressure gauge 4700, information acquisition card 4800, computer 4900.
As shown in Figure 4, all sensors all adopt standardized element, and wherein axial compression sensor 4100 is for accurately measuring the suffered xial feed of sample, i.e. horizontal tectonics stress; Confined pressure sensor 4200 is for accurately measuring the confined pressure of sample, i.e. reservoir pressure; Left part hydraulic pressure sensor 4300 is pressed boundary condition with right part hydraulic pressure sensor 4400 for the hole of accurately measuring sample; , gas injection pressure sensor 4500 and flowmeter 4600 change and integrated flow for accurately measuring CO2 injection process pressure; , information acquisition card 4800 and computer 4900 be for gathering above-mentioned signal and analyzing and processing data.
Claims (6)
1. a high pressure nuclear magnetic resonance CO2 geological storage model test apparatus, by sample visual inspection device (1000), load control device (2000), fluid control device (3000) and data acquisition processing device (4000) composition, it is characterized in that: load control device (2000) is connected with sample visual inspection device (1000) by pipeline, fluid control device (3000) is connected with the core holding unit (1200) in sample visual inspection device (1000) by fluid flow in pipes, axial compression sensor (4100) in data acquisition processing device (4000), confined pressure sensor (4200) is arranged on respectively load control device (2000) axis press pump (2100), on the pipeline that confined pressure pump (2200) is connected with core holding unit (1200), left part hydraulic pressure sensor (4300) in data acquisition processing device (4000), right part hydraulic pressure sensor (4400) is connected on the pipeline that in fluid control device (3000), left part salt water injection pump (3100) is connected with core holding unit (1200) with right part salt water injection pump (3200), gas injection pressure sensor (4500) in data acquisition processing device (4000), flowmeter (4600) is connected on the pipeline that in fluid control device (3000), CO2 injection pump (3300) is connected with core holding unit (1200), differential pressure gauge (4700) two ends in data acquisition processing device (4000) are connected on the pipeline that left part salt water injection pump (3100) is connected with core holding unit (1200) with right part salt water injection pump (3200), nuclear magnetic resonance analyser (1500) in sample visual inspection device (1000) is by the computer (4900) in data line connection data acquisition processing device (4000).
2. by a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus claimed in claim 1, it is characterized in that: described sample visual inspection device (1000) comprising: sample (1100), core holding unit (1200), thermal shrinkable sleeve (1300), nuclear magnetic resonance analyser (1500), sample upstream cushion block (1215) in sample (1100) and core holding unit (1200), sample downstream cushion block (1217) center line unanimously docks, thermal shrinkable sleeve (1300) is enclosed within sample upstream cushion block (1215), sample (1100) and the outer pyrocondensation of sample downstream cushion block (1217) are fastening, thermal shrinkable sleeve (1300), sample (1100) and sample upstream cushion block (1215), sample downstream cushion block (1217) is inserted in specimen holder (1200), specimen holder (1200) is placed horizontally in the probe coil of nuclear magnetic resonance analyser (1500), core holding unit (1200) is by sample upstream cushion block 1215, sample downstream cushion block 1217 is to test (1100) exert pressure axle pressure or injected media.
3. by a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus claimed in claim 1, it is characterized in that: described load control device (2000) comprising: axial compression pump (2100), confined pressure pump (2200), temperature control circulator (2300), axial compression pump (2100) is directly connected with confined pressure pump (2200) nothing, axial compression pump (2100) is with temperature control circulator (2300) without being directly connected, and temperature control circulator (2300) is connected by pipeline with confined pressure pump (2200).
4. by a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus claimed in claim 1, it is characterized in that: described fluid control device (3000) comprising: left part salt water injection pump (3100), right part salt water injection pump (3200), CO2 injection pump (3300), fluid attemperating unit (3400), left part salt water injection pump (3100) is connected by the sample downstream water injection hole (1203) of salt water flow in pipes and core holding unit (1200), right part salt water injection pump (3200) is connected by the sample upstream water injection hole (1205) of salt water flow in pipes and core holding unit (1200), CO2 injection pump (3300) is connected by the CO2 filling orifice (1220) of CO2 flow in pipes and core holding unit (1200), fluid attemperating unit (3400) by water back respectively with left part salt water injection pump (3100), right part salt water injection pump (3200) is connected with CO2 injection pump (3300).
5. by a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus claimed in claim 1, it is characterized in that: described data acquisition processing device (4000) comprising: axial compression sensor (4100), confined pressure sensor (4200), left part hydraulic pressure sensor (4300), right part hydraulic pressure sensor (4400), gas injection pressure sensor (4500), flowmeter (4600), differential pressure gauge (4700), information acquisition card (4800), computer (4900), axial compression sensor (4100), confined pressure sensor (4200), left part hydraulic pressure sensor (4300), right part hydraulic pressure sensor (4400), gas injection pressure sensor (4500), flowmeter (4600) is connected with information acquisition card (4800) by data line respectively with differential pressure gauge (4700), information acquisition card (4800) is connected with computer (4900) by data line.
6. by a kind of high pressure nuclear magnetic resonance CO2 geological storage model test apparatus claimed in claim 1, it is characterized in that: described core holding unit (1200) comprises clamper end cap (1201), fixing stifled (1202), stack shell (1204), displacement transducer pillar (1209), oil cylinder (1212), sample upstream cushion block (1215), clamper end cap (1201) is connected with bolt (1219) with fixing stifled (1202), circulation fluid force feed outlet (1218) is fixing stifled (1202) inner perforate, fixing stifled (1202) are connected with stack shell (1204), stack shell (1204) is connected with oil cylinder (1212), oil cylinder downstream oil hole (1206), oil cylinder upstream oil hole (1207) and circulation fluid force feed import (1214) are the perforate of oil cylinder (1212), oil cylinder (1212) is connected with cylinder cover (1208), and sealed by O-ring seal (1211), sample upstream water injection hole (1205) is the perforate of sample upstream cushion block (1215), sample upstream cushion block (1215) directly inserts piston (1213) and connects, sample downstream water injection hole (1203) is the perforate of sample downstream cushion block (1217), sample downstream cushion block (1217) directly inserts clamper end cap (1201) and connects, core sample (1100) is placed between sample upstream cushion block (1215) and sample downstream cushion block (1217), displacement transducer pillar (1209) is connected with piston (1213), displacement transducer pillar (1209) is connected with pressure lever type displacement transducer (1210).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104034745A (en) * | 2014-06-30 | 2014-09-10 | 中国科学院武汉岩土力学研究所 | High-pressure nuclear magnetic resonance CO2 geological storage model test system |
| CN106525889A (en) * | 2016-11-03 | 2017-03-22 | 中国科学院力学研究所 | Experiment device and method for simulating hole diameter variations in tight oil depletion development process |
| CN106645218A (en) * | 2016-12-29 | 2017-05-10 | 东北石油大学 | Device and method for studying influence on integrity of shaft in carbon dioxide geological storage process |
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| CN114544461A (en) * | 2022-02-15 | 2022-05-27 | 中国矿业大学 | Supercritical CO2Sealing and damage monitoring test system and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104034745A (en) * | 2014-06-30 | 2014-09-10 | 中国科学院武汉岩土力学研究所 | High-pressure nuclear magnetic resonance CO2 geological storage model test system |
| CN104034745B (en) * | 2014-06-30 | 2016-09-07 | 中国科学院武汉岩土力学研究所 | A kind of high pressure nuclear magnetic resonance CO2geological storage model assay systems |
| CN106525889A (en) * | 2016-11-03 | 2017-03-22 | 中国科学院力学研究所 | Experiment device and method for simulating hole diameter variations in tight oil depletion development process |
| CN106645218A (en) * | 2016-12-29 | 2017-05-10 | 东北石油大学 | Device and method for studying influence on integrity of shaft in carbon dioxide geological storage process |
| CN107632136A (en) * | 2017-08-23 | 2018-01-26 | 中国科学院力学研究所 | The device and experimental method of carbon dioxide diffusion oil extraction in a kind of oily reservoir of densification |
| CN110865014A (en) * | 2019-11-26 | 2020-03-06 | 河海大学 | Rock pore seepage model testing device and method under coupling action based on nuclear magnetic resonance |
| CN114544461A (en) * | 2022-02-15 | 2022-05-27 | 中国矿业大学 | Supercritical CO2Sealing and damage monitoring test system and method |
| CN114544461B (en) * | 2022-02-15 | 2023-11-21 | 中国矿业大学 | Supercritical CO 2 Sealing and damage monitoring test system and method |
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