CN103927913B - A kind of deep formation environment carbon dioxide geological stores experimental system for simulating - Google Patents
A kind of deep formation environment carbon dioxide geological stores experimental system for simulating Download PDFInfo
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Abstract
The invention provides a kind of deep formation environment carbon dioxide geological and store experimental system for simulating, comprise insulating box, acoustic receiver, be located at the temperature, pressure flow stress coupling rock core device in described insulating box, gas-liquid injection device, gas-liquid discharger, and confined pressure gas-liquid injection device; Temperature, pressure flow stress coupling rock core device comprises the core holding unit of tubular and both ends open, for the seal rubber sleeve of sealed envelope experiment rock core, transmit connector with the upper and lower stress of described core holding unit both ends open adaptation, upper and lower forcing press force-transmitting pole, upper and lower acoustic emission and receiving transducer, the stack shell of described core holding unit is provided with confined pressure gas-liquid grouting socket. The objective flowing experiment of formation core sample in the in situ environment of deep formation that reproduced of the present invention, the migration mode of real simulation carbon dioxide in the subterranean body hole of deep, can the accurate experimental data parameter of Real-time Obtaining.
Description
Technical field
The invention belongs to carbon dioxide geological storing technology research device field, relate in particular to a kind of deep formationEnvironment carbon dioxide geological stores experimental system for simulating.
Background technology
Environment and the energy are the two principal themes that human social is paid close attention to, and are also to affect China its peopleTwo large factors of economic development. In recent years, climate change problem has been listed in the primary environmental problem in the whole world,And day by day become the focus of international concern. On December 7th, 2009 is to December 19, the world 192Individual country holds the United Nations's Climate Conference in Copenhagen, countermeasure and the measure of discussion reply climate change. IGovernment of state pays much attention to climate change problem, promises to undertake the year two thousand twenty China unit GDP titanium dioxideCarbon emission declined 40%～45% than 2005, and the carbon dioxide discharge-reduction pressure that China faces is huge.
At present, new method and the new technology of many reply whole world changes proposed in the world, carbon dioxide geologicalStoring (CGS) and directly, effectively reduce discharging means as one, is the generally acknowledged reply gas of current international communityWait the important countermeasure changing, this technology both can meet the growing energy demand in the world, again can be to the earthWeather threatens. CO2Geology stores (CO2GeologicalSequestration), by fixed point sourcesThe CO that (majority is power plant or similar industrial point source) produces2By collecting, long term storage is in relativelyIn the geological structure of sealing, thereby stop or significantly reduce CO2To the anthropogenic discharge in atmosphere. CO2GeologyStoring technology has caused the great attention of national governments and scientists, European and American developed countries walked beforeFace, has carried out a large amount of feasibility studies, in-house laboratory investigation and the study of computer simulation, and on this basisOn carried out the demonstration of relevant Practical Project, obtained significant effect, some key technologies are ripe gradually.
Early stage research and engineering practice show, carbon dioxide geological store process, relate to a series of heavyLarge economy, social concern, matter of science and technology and environment, safety problem. Realize science, effectively, economical,The carbon dioxide geological of environmental protection stores, and needs multidisciplinary Science and Technology personnel's joint efforts and cooperation.
China is at the early-stage in the research of carbon dioxide geological storage art, and China Geological Survey Bureau is in 2010Implement the planning item that first carbon dioxide geological of China stores year: national carbon dioxide geological stores divesPower is evaluated and demonstration project. The means of the space migration of research carbon dioxide in geologic reservoir comprise Numerical-ModePlan, underground monitoring, surface seismic, laboratory experiment etc. Simulating lab test is that research carbon dioxide is at reservoirMigration is developed and is obtained important method and the technological means of relevant parameter. Because carbon dioxide geological is stored inChina, at present in the starting stage, therefore, needs the experimental provision that exploitation is relevant badly, for scientific research and workJourney experiment.
Summary of the invention
The object of the present invention is to provide a kind of deep formation environment carbon dioxide geological to store simulated experiment systemSystem, be intended to solve existing carbon dioxide geological storing technology research device can not be objective sign experiment rock core of living inIn situ environment condition under temperature, pressure flow stress coupled problem, by research and development device of the present invention, realShow objective simulation and characterize real underground in situ environment condition, making the petrophysical parameter and the fluid that obtainMigration characteristics data are more scientific and reasonable.
The present invention is achieved in that a kind of deep formation environment carbon dioxide geological stores experimental system for simulating,Comprise insulating box, acoustic receiver, is located at the temperature, pressure flow stress coupling rock core dress in described insulating boxPut gas-liquid injection device, gas-liquid discharger, and gas-liquid confined pressure injection device; Wherein, described temperaturePressure current dynamic stress coupling rock core device comprises the core holding unit of tubular and both ends open, for sealed envelopeThe seal rubber sleeve of experiment rock core, is connected with the upper and lower stress transmission of described core holding unit both ends open adaptationHead, upper and lower forcing press force-transmitting pole, upper acoustic emission probe, lower sound wave receiving transducer, center is provided with and instituteState the upper and lower seal plug that upper and lower stress transmits the adaptive through hole of connector, the stack shell of described core holding unitBe provided with confined pressure gas-liquid grouting socket; Wherein,
Described upper and lower seal plug docks respectively closed with core holding unit opening two ends, described rock core clampingThe built-in seal rubber sleeve of device; Described upper stress transmits connector one end and holds through after the through hole of upper seal plugOn the rock core of seal rubber sleeve inside, and the described upper stress transmission connector other end holds in pressurizing machine power transmissionOn post, between described upper stress transmission connector and pressurizing machine force-transmitting pole, be provided with acoustic emission probe; InstituteState lower stress transmission connector one end and hold the rock core in seal rubber sleeve inside through after the through hole of lower seal plugUpper, and described lower stress transmits the connector other end and holds on downforce machine force-transmitting pole, and described lower stress passesPass between connector and downforce machine force-transmitting pole and be provided with lower sound wave receiving transducer;
Described acoustic receiver connects by data wire with upper acoustic emission probe and lower sound wave receiving transducer respectivelyConnect;
Described upper stress transmits in connector and is provided with the gas-liquid of the inner conducting of core holding unit and discharges interface, instituteState lower stress and transmit the gas-liquid grouting socket being provided with in connector with the inner conducting of core holding unit; Described gas-liquidInjection device is connected with described gas-liquid grouting socket by pipeline, and described gas-liquid discharger is by pipeline and instituteState gas-liquid and discharge interface connection;
Between described core holding unit, seal rubber sleeve, upper seal plug and lower seal plug, form an annularAnnular seal space, described annular seal space communicates with confined pressure gas-liquid grouting socket, described confined pressure gas-liquid grouting socket withGas-liquid confined pressure injection device connects by pipeline.
Preferably, described gas-liquid injection device comprises injection pressure sensor, booster pump, air accumulator, pressure regulationValve, intake valve, air outlet valve, for holding the high-pressure gas container A after supercharging, for holding experimentationThe middle container B that needs the liquid injecting, and injection pump; Wherein, described intake valve, booster pump, gas storageTank, pressure regulator valve, air outlet valve and gas-liquid grouting socket connect by pipeline successively;
Described injection pump is connected with the input of container A and container B by pipeline respectively, described container AAnd the output of container B is located at the connecting pipe between described air outlet valve and gas-liquid grouting socket;
Described injection pressure sensor is located in the connecting pipe between air outlet valve and gas-liquid grouting socket, and instituteState injection pressure sensor between air outlet valve and container A.
Preferably, described injection pressure sensor comprises that range specification is respectively 10MPa, 70MPa, 40First, second of MPa and the 3rd pressure sensor, F1 valve and F2 valve; Wherein,
Described the first pressure sensor is connected with the input of F1 valve, described the 3rd pressure sensor and F2 valveInput connect, the output of output, the second pressure sensor and the F2 valve of described F1 valve convergesIn first arm one end, the described first arm other end is connected to the company between air outlet valve and gas-liquid grouting socketTake on road.
Preferably, described deep formation environment carbon dioxide geological storage experimental system for simulating also comprises upper and lowerHold-down ring, upper and lower unwarranted charge; The axle center place of described upper hold-down ring and upper unwarranted charge is equipped with and described upper stressTransmit the through hole of connector adaptation, the axle center place of described lower hold-down ring and lower unwarranted charge is equipped with and described lower answeringPower is transmitted the through hole of connector adaptation; Wherein,
Described upper unwarranted charge screws in core holding unit one end by internal thread, the upper hold-down ring in described upper unwarranted chargeHold out against upper seal plug away from core holding unit direction one end on;
Described lower unwarranted charge screws at the core holding unit other end by internal thread, the lower compression in described lower unwarranted chargeRing hold out against lower seal plug away from core holding unit direction one end on.
Preferably, described gas-liquid discharger comprises F3 valve, F4 valve, F5 valve, discharge pressure sensor,Back pressure sensor, back-pressure valve, surge tank, backpressure pump, liquid containing device, gas-liquid separator, and flowMeter; Wherein, described back-pressure valve is provided with first, second and the 3rd back pressure connectivity port, described back-pressure valveThe first and second pipeline connectivity ports be connected by pipeline with described gas-liquid outlet respectively, described gas-liquid is dividedBe provided with first, second and the 3rd gas-liquid separation connectivity port from device; Wherein,
The connecting pipe of described the first back pressure connectivity port and gas-liquid outlet is provided with F3 valve, described dischargePressure sensor is connected on the pipeline between the first pipeline connectivity port and F3 valve by pipeline;
Described the second back pressure connectivity port is connected by pipeline with the first gas-liquid separation connectivity port, and described secondThe liquid output of gas-liquid separation connectivity port is placed in liquid containing device top, and described the 3rd gas-liquid separation connectsPort is connected by pipeline with described gas-liquid outlet, and described the 3rd gas-liquid separation connectivity port and gas-liquid are dischargedOn pipeline between mouthful, be provided with successively F5 valve, flowmeter and F4 valve;
Between described backpressure pump and the 3rd back pressure connectivity port, be connected described backpressure pump and the 3rd time by pipelinePress on the pipeline between connectivity port and connect second arm one end, described surge tank and back pressure sensor are by pipeRoad connects, and the described second arm other end is connected on the pipeline between surge tank and back pressure sensor.
Preferably, described discharge pressure sensor comprise range be respectively 40MPa, 10MPa the 4th,The 5th pressure sensor and F6 valve; Described the 4th pressure sensor is connected with the input of F6 valve, described inThe output of F6 valve and the 5th pressure sensor converge on the 3rd arm, and the other end of described the 3rd arm connectsBe connected in the connecting pipe of the first back pressure connectivity port and gas-liquid outlet.
Preferably, described flowmeter comprises that range is respectively 10SCCM, 100SCCM, 1000SCCMFirst, second and the 3rd flowmeter, and for the corresponding range that automatically switches according to pipeline flow sizeFlowmeter carries out V1 autocontrol valve, V2 autocontrol valve, the V3 autocontrol valve of work; Wherein,Described the 3rd flowmeter is connected with V1 autocontrol valve input, and described the second flowmeter and V2 control automaticallyThe input of valve connects, and described first flow meter is connected with the input of V3 autocontrol valve, described V1～V3Output converge in one end of the 4th arm, and the other end of described the 4th arm is connected to F5 valve and F4In connecting pipe between valve.
Preferably, described gas-liquid confined pressure injection device comprises confined pressure pump and confined pressure sensor, wherein, described inConfined pressure pump is connected by pipeline with core holding unit, and described confined pressure sensor is connected to confined pressure pump and rock core clampingOn pipeline between device.
The present invention overcomes the deficiencies in the prior art, provides a kind of deep formation environment carbon dioxide geological to store mouldDraft experiment system, based on the present situation of association area seepage research, adopt by temperature control, fluid pressure control,Reservoir stress control, flow measurement combine with sound collecting, and the objective formation core sample that reproduced is in deepFlowing experiment in the in situ environment on stratum is the migration of objective simulation carbon dioxide in subterranean body holeProvide feasible technical guarantee, for obtaining the objective experimental data of science and relevant blowhole stream moreBody flow parameter provides appointed condition.
Brief description of the drawings
Fig. 1 is that deep formation environment carbon dioxide geological of the present invention stores experimental system for simulating one embodimentStructural representation;
Fig. 2 is the A-A cross-sectional view of temperature, pressure flow stress coupling rock core device in Fig. 1;
Fig. 3 is the structural representation of gas-liquid injection device in Fig. 1;
Fig. 4 is the structural representation of gas-liquid discharger in Fig. 1;
Fig. 5 is the structural representation of gas-liquid confined pressure injection device in Fig. 1.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and realityExecute example, the present invention is further elaborated. Only should be appreciated that specific embodiment described hereinIn order to explain the present invention, be not intended to limit the present invention.
As shown in Fig. 1 to 5, wherein, Fig. 1 is that deep formation environment carbon dioxide geological of the present invention storesThe structural representation of experimental system for simulating one embodiment; Fig. 2 is temperature, pressure flow stress coupling rock in Fig. 1The A-A cross-sectional view of center device; Fig. 3 is the structural representation of gas-liquid injection device in Fig. 1; FigureThe structural representation of gas-liquid discharger in the 4th, Fig. 1; Fig. 5 is the knot of gas-liquid confined pressure injection device in Fig. 1Structure schematic diagram.
A kind of deep formation environment carbon dioxide geological stores experimental system for simulating, comprises insulating box 1, sound waveReceiver 2, is located at the temperature, pressure flow stress coupling rock core device 3 in described insulating box 1, and gas-liquid is injectedDevice 4, gas-liquid discharger 5, and confined pressure gas liquid injection device 6; Wherein, described temperature, pressure streamDynamic stress coupling rock core device 3 comprises the core holding unit 31 of tubular and both ends open, real for sealed envelopeTest the seal rubber sleeve 321 of rock core, with the upper and lower stress transmission of described core holding unit 31 both ends open adaptationsConnector 331,332, upper and lower forcing press force-transmitting pole 341,342, upper acoustic emission probe 351, lower soundRipple receiving transducer 352, center is provided with described upper and lower stress and transmits connector 331,332 adaptive through holesUpper 322, lower seal plug 323, the stack shell of described core holding unit 31 is provided with confined pressure gas-liquid grouting socket36; Wherein,
Described upper and lower seal plug 322,323 docks respectively closed with core holding unit 31 opening two ends,The built-in seal rubber sleeve 321 of described core holding unit 31; Described upper stress transmits connector 331 one end through upperAfter the through hole of seal plug 322, hold on the rock core 7 of seal rubber sleeve 321 inside, and described upper stress passesPass connector 331 other ends and hold on pressurizing machine force-transmitting pole 341, described upper stress transmits connector 331And between pressurizing machine force-transmitting pole 341, be provided with acoustic emission probe 351; Described lower stress transmits connector332 one end hold on the rock core 7 of seal rubber sleeve 321 inside through after the through hole of lower seal plug 323,And described lower stress transmits connector 332 other ends and holds on downforce machine force-transmitting pole 342, described lower answeringPower is transmitted between connector 332 and downforce machine force-transmitting pole 342 and is provided with lower sound wave receiving transducer 352;
Described acoustic receiver 2 is logical with upper acoustic emission probe 351 and lower sound wave receiving transducer 352 respectivelyCrossing data wire connects;
Described upper stress transmits in connector 331 and is provided with the gas-liquid of core holding unit 31 inner conductings and discharges and connectMouth 324, described lower stress transmits in connector 332 and is provided with the gas-liquid of core holding unit 31 inner conductings and notesIncoming interface 325; Described gas-liquid injection device 4 is connected with described gas-liquid grouting socket 325 by pipeline, instituteStating gas-liquid discharger 5 is connected by pipeline and described gas-liquid discharge interface 324;
Described core holding unit 31, seal rubber sleeve 321, upper seal plug 322 and lower seal plug 323Between form an annular seal space, described annular seal space communicates with confined pressure gas-liquid grouting socket 36, described in encloseThe liquid grouting socket 36 of calming the anger is connected by pipeline with gas-liquid confined pressure injection device 6.
In embodiments of the present invention, in order to ensure the dismounting side of temperature, pressure flow stress coupling rock core device 3Just and good sealing, described deep formation environment carbon dioxide geological stores experimental system for simulating and also wrapsDraw together upper and lower hold-down ring 326,327, upper and lower unwarranted charge 328,329; Described upper hold-down ring 326 and upper largeThe axle center place of cap 328 is equipped with the through hole that transmits connector 331 adaptations with described upper stress, described lower compressionThe axle center place of ring 327 and lower unwarranted charge 329 is equipped with described lower stress and transmits the logical of connector 332 adaptationsHole; Wherein, described upper unwarranted charge 328 screws in core holding unit 31 one end by internal thread, described upper unwarranted chargeUpper hold-down ring 326 in 328 hold out against upper seal plug 322 away from core holding unit 31 direction one end on;Described lower unwarranted charge 329 screws at core holding unit 32 other ends by internal thread, in described lower unwarranted charge 329Lower hold-down ring 327 hold out against lower seal plug 323 away from core holding unit 31 direction one end on.
In an embodiment of the present invention, more specifically, described gas-liquid injection device 4 comprises injection pressure sensingDevice 41, booster pump 42, air accumulator 43, pressure regulator valve 44, intake valve 45, air outlet valve 46, for holding increasingHigh-pressure gas container A47 after pressure, needs for holding experimentation the container B 48 of liquid of injecting,And injection pump 49; Wherein, described intake valve 45, booster pump 42, air accumulator 43, pressure regulator valve 44, go outAir valve 46 and gas-liquid grouting socket connect by pipeline successively;
Described injection pump is connected with the input of container A 47 and container B 48 by pipeline respectively, described appearanceThe output of device A47 and container B 48 is located at the tube connector between described air outlet valve 46 and gas-liquid grouting socketRoad;
Described injection pressure sensor 41 is located in the connecting pipe between air outlet valve 46 and gas-liquid grouting socket,And described injection pressure sensor 41 is between air outlet valve 46 and container A 47.
More specifically, described injection pressure sensor 41 comprise range specification be respectively 10MPa, 40MPa,70MPa first, second and the 3rd pressure sensor 411,412,413, F1 valve, and F2 valve;Wherein,
Described the first pressure sensor 411 is connected with the input of F1 valve, described the 3rd pressure sensor 413Be connected output, the second pressure sensor 412 and the F2 valve of described F1 valve with the input of F2 valveOutput converge in first arm 414 one end, described first arm 414 other ends are connected to air outlet valve 46And in connecting pipe between gas-liquid grouting socket.
More specifically, described gas-liquid discharger 5 comprises F3 valve, F4 valve, F5 valve, discharge pressure sensingDevice 51, back pressure sensor 52, back-pressure valve 53, surge tank 54, backpressure pump 55, liquid containing device 56, gasLiquid/gas separator 57, and flowmeter 58; Wherein, described back-pressure valve 53 be provided with first, second andThree back pressure connectivity ports, arrange with described gas-liquid respectively the first and second pipeline connectivity ports of described back-pressure valve 53Outlet connects by pipeline, and described gas-liquid separator 57 is provided with first, second and the 3rd gas-liquid separation connectsConnect port; Wherein,
The connecting pipe of described the first back pressure connectivity port and gas-liquid outlet is provided with F3 valve, described dischargePressure sensor 51 is connected on the pipeline between the first pipeline connectivity port and F3 valve by pipeline;
Described the second back pressure connectivity port is connected by pipeline with the first gas-liquid separation connectivity port, and described secondThe liquid output of gas-liquid separation connectivity port is placed in liquid containing device 56 tops, and described the 3rd gas-liquid separation connectsConnect port and be connected by pipeline with described gas-liquid outlet, described the 3rd gas-liquid separation connectivity port and gas-liquid rowOn pipeline between outlet, be provided with successively F5 valve, flowmeter 58 and F4 valve;
Between described backpressure pump 55 and the 3rd back pressure connectivity port, be connected by pipeline, described backpressure pump 55 withOn pipeline between the 3rd back pressure connectivity port, connect second arm 59 one end, described surge tank 54 and back pressureSensor 52 connects by pipeline, and described second arm 59 other ends are connected to surge tank 54 and back pressure sensingOn pipeline between device 52.
More specifically, described discharge pressure sensor 51 comprises that range is respectively of 40MPa, 10MPaFour, the 5th pressure sensing 511,512 and F6 valve; Described the 4th pressure sensor 511 and F6 valveInput connects, and the output of described F6 valve and the 5th pressure sensor 512 converge in the 3rd arm 513Upper, the other end of described the 3rd arm 513 is connected to being connected of the first back pressure connectivity port and gas-liquid outletOn pipeline.
More specifically, described flowmeter 58 comprises that range is respectively 10SCCM, 100SCCM, 1000SCCMFirst, second and the 3rd flowmeter 581,582,583, and for according to pipeline flow size fromThe flowmeter that moves the corresponding range of switching carries out the V1 autocontrol valve of work, V2 autocontrol valve, V3 certainlyBrake control valve; Wherein, described the 3rd flowmeter 583 is connected with V1 autocontrol valve input, and describedTwo flowmeters 582 are connected with the input of V2 autocontrol valve, and described first flow meter 581 is automatic with V3The input of control valve connects, and the output of described V1～V3 converges in one end of the 4th arm 584, and instituteThe other end of stating the 4th arm 584 is connected in the connecting pipe between F5 valve and F4 valve.
More specifically, described gas-liquid confined pressure injection device 6 comprises confined pressure pump 61 and confined pressure sensor 62,Wherein, described confined pressure pump 61 is connected by pipeline with core holding unit 31, and described confined pressure sensor 62 connectsOn the pipeline between confined pressure pump 61 and core holding unit 31
In the actual application of the embodiment of the present invention, shown in concrete using method following steps:
(1) ready rock core is put into seal rubber sleeve 321, will the seal rubber sleeve 321 of rock core be housedPut into core holding unit 31;
(2) protruding end of upper and lower seal plug 322,323 is filled in respectively to the two ends of seal rubber sleeve 321;
(3) upper and lower hold-down ring 326,327 is overlapped respectively and be pressed in the far away of upper and lower seal plug 322,323From gum cover one end;
(4) will be with female upper and lower unwarranted charge 328,329 to be arranged on two ends respectively with the outer spiral shell of adaptationOn the core holding unit 31 of line. Upper and lower unwarranted charge 328,329 screw pressure by upper and lower hold-down ring 326,327 are delivered on upper and lower seal plug 322,323, realize upper and lower seal plug 322,323 and rockHeart clamp holder 31 sealing contacts. Now, at seal plug 322,323, seal rubber sleeve 321 and rock core folderHold between 31 3 parts of device and formed an annular cavity. This cavity is by being located at core holding unitThe confined pressure gas-liquid grouting socket 36 of 31 sidewalls is connected with gas-liquid confined pressure injection device 6. In experiment, logicalCross the pressure of controlling gas-liquid confined pressure injection device 6, control the pressure in this cavity, the pressure of cavity passes throughSeal rubber sleeve 321 is delivered on rock core, and then has realized the loading of rock core level to stress;
(5) upper and lower stress is transmitted to the centre of connector 331,332 through upper and lower unwarranted charge 328,329Opening, and the middle opening of upper and lower seal plug 322,323, hold the rock core in seal rubber sleeve 321Upper/lower terminal; Upper and lower stress transmits connector 331,332 by upper and lower force-transmitting pole 341,342,The setting pressure of test pressing machine (universal testing machine) is delivered on experiment rock core, realizes the axial of rock coreStress loading;
(6) start insulating box 1, control the temperature of core chamber, start gas-liquid injection device 4, gas-liquid dischargeDevice 5 and gas-liquid confined pressure injection device 6, start to carry out related experiment.
The present invention is based on the present situation of association area seepage research, adopt by temperature control, fluid pressure control,Reservoir stress control, flow measurement combine with sound collecting, and the objective formation core sample that reproduced is in deepFlowing experiment in the in situ environment on stratum is the migration of real simulation carbon dioxide in subterranean body holeImplementation is provided, and in embodiments of the present invention, concrete function is as follows:
(1) realize under specified high-temperature and high-pressure conditions the accurate control in blowhole fluid displacement processAnd metering.
(2) in can convection cell displacement process, the parameters,acoustic of sample be accurately measured.
(3) can carry out the serial mechanics parameter test such as deformation of rock core.
(4) can realize rock core under different temperatures, pressure condition porosity and permeability change test.
(5) gas-liquid discharger is made up of pressure sensor, a day gentle measuring pump, completes rock core Liquid PenetrantThe measurement of rate, water saturation.
(6) can be under the temperature setting, pressure condition long-time (30 days) continuous firing of equipment and propertyCan be stable.
(7) sample adds unloading and adopts top to add unloading manner, vertical and oily, gas, water to inject from lower end.
(8) computer automatically complete the related axial compression of pilot system, confined pressure, osmotic pressure, displacement pressure,The Real-time Collection of temperature, flow, saturation degree and parameters,acoustic, and be stored in data file, show in real time realTest process curve, make experimenter can grasp in time experiment process and effect.
(9) related axial compression, confined pressure, osmotic pressure, displacement pressure, temperature and the acoustics of pilot system is adoptedCollection control instrument instrument is incorporated on a console, and each process control is by computer controlled automatic and processing.Control pressurer system can be realized triaxial pressure and independently control, and pressure control unit is incorporated in a panel.
Compare and the shortcoming and defect of prior art, the present invention has following beneficial effect:
(1) the present invention adopt temperature control, fluid pressure control, reservoir stress control, flow measurement andSound collecting combines, objective temperature, stress, the stream that reproduces the residing deep formation of formation core sampleThe environmental condition of body coupling pressure, for more objectively simulating the migration of carbon dioxide in subterranean body holeImplementation is provided.
(2) the present invention transmits joint by acoustic emission receiving transducer being built in to upper and lower stressInside, has realized the real-time prison of experiment rock core at the different phase rock core parameters,acoustic of experimentationSurveying, by the decipher of acoustic signals, can be fluid displacement experiment and rock core CO 2 fluidMigration important information and data are provided.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, not all at thisAny amendment of doing within bright spirit and principle, be equal to and replace and improvement etc., all should be included in the present inventionProtection domain within.
Claims (8)
1. deep formation environment carbon dioxide geological stores an experimental system for simulating, it is characterized in that, comprisesInsulating box, acoustic receiver, is located at the temperature, pressure flow stress coupling rock core device in described insulating box,Gas-liquid injection device, gas-liquid discharger, and gas-liquid confined pressure injection device; Wherein, described temperature, pressureFlow stress coupling rock core device comprises the core holding unit of tubular and both ends open, tests for sealed envelopeThe seal rubber sleeve of rock core, transmits connector with the upper and lower stress of described core holding unit both ends open adaptation,Upper and lower forcing press force-transmitting pole, upper acoustic emission probe, lower sound wave receiving transducer, center be provided with described upper,Lower stress transmits the upper and lower seal plug of the adaptive through hole of connector, and the stack shell of described core holding unit is provided withConfined pressure gas-liquid grouting socket; Wherein,
Described upper and lower seal plug docks respectively closed with core holding unit opening two ends, described rock core clampingThe built-in seal rubber sleeve of device; Described upper stress transmits connector one end and holds through after the through hole of upper seal plugOn the rock core of seal rubber sleeve inside, and the described upper stress transmission connector other end holds in pressurizing machine power transmissionOn post, between described upper stress transmission connector and pressurizing machine force-transmitting pole, be provided with acoustic emission probe; InstituteState lower stress transmission connector one end and hold the rock core in seal rubber sleeve inside through after the through hole of lower seal plugUpper, and described lower stress transmits the connector other end and holds on downforce machine force-transmitting pole, and described lower stress passesPass between connector and downforce machine force-transmitting pole and be provided with lower sound wave receiving transducer;
Described acoustic receiver connects by data wire with upper acoustic emission probe and lower sound wave receiving transducer respectivelyConnect;
Described upper stress transmits the gas-liquid outlet being provided with in connector with the inner conducting of core holding unit, described inIn lower stress transmission connector, be provided with the gas-liquid grouting socket with the inner conducting of core holding unit; Described gas-liquid noteEnter device and be connected with described gas-liquid grouting socket by pipeline, described gas-liquid discharger by pipeline with described inGas-liquid outlet connects;
Between described core holding unit, seal rubber sleeve, upper seal plug and lower seal plug, form an annularAnnular seal space, described annular seal space communicates with confined pressure gas-liquid grouting socket, described confined pressure gas-liquid grouting socket withGas-liquid confined pressure injection device connects by pipeline.
2. deep formation environment carbon dioxide geological as claimed in claim 1 stores experimental system for simulating, itsBe characterised in that, described deep formation environment carbon dioxide geological stores experimental system for simulating and also comprises upper and lower pressureTight ring, upper and lower unwarranted charge; The axle center place of described upper hold-down ring and upper unwarranted charge is equipped with described upper stress and passesPass the through hole of connector adaptation, the axle center place of described lower hold-down ring and lower unwarranted charge is equipped with and described lower stressTransmit the through hole of connector adaptation; Wherein,
Described upper unwarranted charge screws in core holding unit one end by internal thread, the upper hold-down ring in described upper unwarranted chargeHold out against upper seal plug away from core holding unit direction one end on;
Described lower unwarranted charge screws at the core holding unit other end by internal thread, the lower compression in described lower unwarranted chargeRing hold out against lower seal plug away from core holding unit direction one end on.
3. deep formation environment carbon dioxide geological as claimed in claim 2 stores experimental system for simulating, itsBe characterised in that, described gas-liquid injection device comprises injection pressure sensor, booster pump, and air accumulator, pressure regulator valve,Intake valve, air outlet valve, for holding the high-pressure gas container A after supercharging, needs for holding experimentationThe container B of the liquid injecting, and injection pump; Wherein, described intake valve, booster pump, air accumulator,Pressure regulator valve, air outlet valve and gas-liquid grouting socket connect by pipeline successively;
Described injection pump is connected with the input of container A and container B by pipeline respectively, described container AAnd the output of container B is located at the connecting pipe between described air outlet valve and gas-liquid grouting socket;
Described injection pressure sensor is located in the connecting pipe between air outlet valve and gas-liquid grouting socket, and instituteState injection pressure sensor between air outlet valve and container A.
4. deep formation environment carbon dioxide geological as claimed in claim 3 stores experimental system for simulating, itsBe characterised in that, described injection pressure sensor comprises that range specification is respectively 10MPa, 70MPa, 40MPaFirst, second and the 3rd pressure sensor, F1 valve and F2 valve; Wherein,
Described the first pressure sensor is connected with the input of F1 valve, described the 3rd pressure sensor and F2 valveInput connect, the output of output, the second pressure sensor and the F2 valve of described F1 valve convergesIn first arm one end, the described first arm other end is connected to the company between air outlet valve and gas-liquid grouting socketTake on road.
5. deep formation environment carbon dioxide geological as claimed in claim 4 stores experimental system for simulating, itsBe characterised in that, described gas-liquid discharger comprises F3 valve, F4 valve, F5 valve, and discharge pressure sensor returnsPressure sensor, back-pressure valve, surge tank, backpressure pump, liquid containing device, gas-liquid separator, and flowmeter;Wherein, described back-pressure valve is provided with first, second and the 3rd back pressure connectivity port, of described back-pressure valveOne is connected by pipeline with described gas-liquid outlet respectively with second pipe connectivity port, described gas-liquid separatorBe provided with first, second and the 3rd gas-liquid separation connectivity port; Wherein,
The connecting pipe of described the first back pressure connectivity port and gas-liquid outlet is provided with F3 valve, described dischargePressure sensor is connected on the pipeline between the first pipeline connectivity port and F3 valve by pipeline;
Described the second back pressure connectivity port is connected by pipeline with the first gas-liquid separation connectivity port, and described secondThe liquid output of gas-liquid separation connectivity port is placed in liquid containing device top, and described the 3rd gas-liquid separation connectsPort is connected by pipeline with described gas-liquid outlet, and described the 3rd gas-liquid separation connectivity port and gas-liquid are dischargedOn pipeline between mouthful, be provided with successively F5 valve, flowmeter and F4 valve;
Between described backpressure pump and the 3rd back pressure connectivity port, be connected described backpressure pump and the 3rd time by pipelinePress on the pipeline between connectivity port and connect second arm one end, described surge tank and back pressure sensor are by pipeRoad connects, and the described second arm other end is connected on the pipeline between surge tank and back pressure sensor.
6. deep formation environment carbon dioxide geological as claimed in claim 5 stores experimental system for simulating, itsBe characterised in that, described discharge pressure sensor comprises that range is respectively the 4th, of 40MPa, 10MPaFive pressure sensors and F6 valve; Described the 4th pressure sensor is connected with the input of F6 valve, described F6The output of valve and the 5th pressure sensor converge on the 3rd arm, and the other end of described the 3rd arm connectsIn the connecting pipe of the first back pressure connectivity port and gas-liquid outlet.
7. deep formation environment carbon dioxide geological as claimed in claim 6 stores experimental system for simulating, itsBe characterised in that, described flowmeter comprises that range is respectively of 10SCCM, 100SCCM, 1000SCCMOne, second and the 3rd flowmeter, and for the stream of the corresponding range that automatically switches according to pipeline flow sizeV1 autocontrol valve, V2 autocontrol valve, V3 autocontrol valve that amount meter carries out work; Wherein, instituteState the 3rd flowmeter and be connected with V1 autocontrol valve input, described the second flowmeter and V2 autocontrol valveInput connect, described first flow meter is connected with the input of V3 autocontrol valve, described V1～V3Output converge in one end of the 4th arm, and the other end of described the 4th arm is connected to F5 valve and F4In connecting pipe between valve.
8. deep formation environment carbon dioxide geological as claimed in claim 7 stores experimental system for simulating, itsBe characterised in that, described gas-liquid confined pressure injection device comprises confined pressure pump and confined pressure sensor, wherein, described in enclosePress pump is connected by pipeline with core holding unit, and described confined pressure sensor is connected to confined pressure pump and core holding unitBetween pipeline on.
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| CN109991143B (en) * | 2017-12-31 | 2022-05-17 | 中国人民解放军63653部队 | Rock-soil medium horizontal seepage simulation device with adjustable sample pool size |
| CN108708716B (en) * | 2018-05-18 | 2022-08-23 | 西南石油大学 | Multifunctional three-dimensional flow simulation closing device |
| CN110208385B (en) * | 2019-05-28 | 2021-08-03 | 中国海洋石油集团有限公司 | Fluid channel and lead device of acoustic wave sensor under high-pressure environment |
| CN110132789A (en) * | 2019-05-31 | 2019-08-16 | 重庆大学 | Coal petrography adsorption swelling measuring system and method under a kind of triaxial stress, hot conditions |
| CN115656440B (en) * | 2022-11-05 | 2023-08-18 | 西南石油大学 | Deep brine layer carbon dioxide buries and deposits analogue means |
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