CN202788823U - Heavy oil reservoir gas injection huff-puff oil production physical simulation experiment device - Google Patents
Heavy oil reservoir gas injection huff-puff oil production physical simulation experiment device Download PDFInfo
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Abstract
The utility model discloses a heavy oil reservoir gas injection huff and puff oil production physical simulation experiment device, which comprises an injection system, a model system, an output control system and a data acquisition and control system, wherein the injection system is connected with the model system so as to inject formation water, crude oil and huff and puff gas into the model system; the outlet end of the model system is connected with an output control system, and the output control system is used for controlling the output of the oil-gas mixture of the model system and measuring the gas flow and the oil production in the output oil-gas mixture; the model system is also connected with a data acquisition and control system, and the data acquisition and control system is used for acquiring pressure, temperature and throughput gas flow data in the model body and monitoring and processing the data in real time. The utility model discloses can be comparatively really at indoor simulation to stratum gas injection, smoldering, recovery process to can monitor from the gas injection well shaft bottom to the pressure and the pressure gradient distribution law of the different positions of stratum distal end in simulation gas injection and recovery process.
Description
Technical field
The utility model belongs to the oil development field, is specifically related to a kind of experimental facilities for simulation heavy crude reservoir gas injection huff and puff oil recovery process.
Background technology
In the oil development field, huff and puff recovers the oil and refers to be no more than under the injection pressure of formation fracture pressure, in oil well, inject the gas (natural gas, carbon dioxide etc.) of handling up, stewing well a period of time of right closing well, allow injecting gas contact with in-place oil as much as possible and dissolve, reach capacity, be referred to as to swallow process; Opening well and making production after soak period finishes because dissolved gas drive effect and crude oil expands, rests on gas in the stratum and confuses the crude oil that is inflated and together flow out well head, finishes the process of shooing out.
At present, Chinese heavy oil development mode mainly comprises steam soak (accounting for 78%), steam flooding (accounting for 10%) and conventional water drive (accounting for 10%).These method techniques are simple, and recovery ratio is higher, are fit to bury the heavy crude reservoir of more shallow (less than 1000m).Yet for the deep-layer heavy crude reservoir that buries dark (generally greater than 1500m), because the steam injection heat loss rate is large, steam injection pressure, ground injecting gas equipment and technological requirement are high, have brought difficulty for the exploitation of such viscous crude.Then there is not the heat waste problem in the huff and puff mining type, and the volume increase that the flexible drive in effect of mass transmitting between glutinous effect, viscous crude and the injected gas contact surface and the nearly pit shaft of injected gas area and rolling action etc. all help heavy crude reservoir falls in the dissolving of the injecting gas such as natural gas, carbon dioxide in viscous crude.Small-scale gas injection (natural gas, carbon dioxide gas etc.) the exploitation field trial of handling up had also been carried out in several oil fields in recent years, and had obtained good effect.But because the restriction of indoor experimental apparatus, it is perfect not enough that huff and puff Related Mechanism and notes are adopted the inadequate system of parameter study, little to mining site reservoir management directive function, is unfavorable for large-scale promotion application.Both at home and abroad carried out a large amount of work at handle up exploitation analogy method and device of reservoir gas injection, below existing reservoir gas injection handled up developed analogy method and device carries out some introductions:
1, external a kind of existing natural gas injection huff and puff oil recovery experimental facilities, this device comprises water injecting device, basket, differential pressure pickup, gasometer, oil-water metering device, valve etc.But it still has the following disadvantages for carrying out the reservoir gas injection mechanism research of handling up: 1) scale of model is less, and particularly one dimension length is inadequate, can not simulate the whole stratum elasticity between (producing well) from the gas injection well to the gas injection well; 2) cycle of handling up that can carry out is few, the cycle recovery percent of reserves is high, is not inconsistent with on-the-spot actual production; 3) model does not arrange pressure-measuring-point along journey, can't study transmission and the metastatic rule of energy in the huff and puff process.
2, domestic a kind of carbon dioxide injection huff and puff oil recovery experimental facilities.This device comprises water injecting device, basket, pressure meter, valve, gas flowmeter, six-way valve, eliminator, back pressure regulator etc.But it still has the following disadvantages for carrying out the reservoir gas injection existing experimental facilities of mechanism research of handling up: 1) model one dimension length is inadequate, can not simulate the whole stratum elasticity between (producing well) from the gas injection well to the gas injection well; 2) can not change by monitoring model different parts pressure, can't study transmission and the metastatic rule of energy in the huff and puff process.
3, other domestic a kind of natural gas injection huff and puff oil recovery experimental facilities.This device comprises injection pump, basket, pressure meter, source of the gas, output system etc.But it still has the following disadvantages for carrying out the reservoir gas injection existing experimental facilities of mechanism research of handling up: 1) model does not possess pressure monitor system along journey, can't truly reflect transmission and the metastatic rule of energy in reservoir pressure change of gradient situation in gas injection and the exploitation process and the huff and puff process; 2) cycle of handling up that can carry out of single tube model is few, the cycle recovery percent of reserves is high, is not inconsistent with on-the-spot actual production; 3) use the tubule line to carry out UNICOM between many basket models, be not inconsistent with actual formation seepage flow situation.
Because the above-mentioned problems of prior art, the design people is based on being engaged in association area rich experiences and professional knowledge for many years, actual in conjunction with using, positive research and innovation in addition, in the hope of overcoming the above-mentioned shortcoming of prior art, provide a kind of can be comparatively truly at lab simulation to the stratum gas injection, stewing well, exploitation process, and can monitor the heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device of simulating pressure (barometric gradient) regularity of distribution from gas injection well (producing well) shaft bottom to stratum far-end diverse location in gas injection and the exploitation process, thereby find the optimum dynamic duty system in the process of handling up, for the handle up mechanism and use research of exploitation of heavy crude reservoir gas injection provides a reliable research platform.
The utility model content
The purpose of this utility model provide a kind of can be comparatively truly at lab simulation to stratum gas injection, stewing well, exploitation process, and can monitor the heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device from gas injection well (producing well) shaft bottom to the axial pressure gradient profile rule of stratum far-end diverse location in simulation gas injection and the exploitation process.
For achieving the above object, the utility model proposes a kind of heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, described experimental facilities comprises: injected system, model system, output control system and data collection and control system, wherein:
Model system, comprise model ontology, several pressure-measuring-point interface and constant temperature sleeves, described model ontology is connected in series successively by many baskets and forms, and is laid with vertically a plurality of described pressure-measuring-point interfaces on every described basket, is enclosed with described constant temperature sleeve on the tube wall of every described basket;
Injected system, comprise that the formation water that is arranged in parallel injects the unit, crude oil injects unit, gases at high pressure injection unit, and the driver element that is connected in formation water injection unit, crude oil injection unit, the outside, gases at high pressure injection unit, described formation water injects the unit and is connected with the entrance point of described model ontology by infusion pipeline respectively with described crude oil injection unit, and described gases at high pressure inject the unit and are connected with the port of export of described model ontology by air delivering pipeline;
The output control system is connected with the port of export of described model ontology, is used for the output of the gas mixture of control model ontology, and gas flow and oil production in the gas mixture of metering output;
The data collection and control system comprises data acquisition unit and data processing unit, and described data acquisition unit and described model ontology join, and is used for gathering pressure, temperature and the gas flow data of handling up in the described model ontology; Described data acquisition unit is connected with described data processing unit by data wire, and described data processing unit is used for real time monitoring and deal with data.
Aforesaid heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, wherein, described formation water injects the first control valve group that the unit comprises formation water piston container and is arranged on described formation water piston container both sides; Described crude oil injects the second control valve group that the unit comprises crude oil piston container and is arranged on described crude oil piston container both sides; Described gases at high pressure inject the 3rd control valve group that the unit comprises injected gas piston container and is arranged on described injected gas piston container both sides; Described driver element comprises measuring pump and vacuum pump, and described measuring pump is connected with described formation water piston container, crude oil piston container, injected gas piston container respectively by described the first control valve group, the second control valve group, the 3rd control valve group; Described vacuum pump is arranged on the described infusion pipeline of entrance point one side of described model ontology.
Aforesaid heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, wherein, the output control system comprises back pressure control module and Oil-gas Separation unit, described back pressure control module is connected in series successively by pipeline by plunger displacement pump, piston container, back-pressure valve and forms, the input of described back-pressure valve is connected with the port of export of described model ontology via the back-pressure valve by-pass valve control, and described plunger displacement pump is connected by data wire with described data acquisition unit; Described Oil-gas Separation unit is formed by eliminator and gas flowmeter serial connection, and described eliminator is connected with the output of described back-pressure valve by pipeline.
Aforesaid heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, wherein, described eliminator is the eliminator with device for measuring volumetric flow of fluid.
Aforesaid heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, wherein, described data acquisition unit comprises a plurality of pressure sensors of being arranged on each described pressure-measuring-point interface, is arranged on the temperature pick up in the described constant temperature sleeve and is arranged on mass-flow gas meter on the described air delivering pipeline; Described pressure sensor is connected with described data processing unit by data acquisition board, described temperature pick up is connected with described data processing unit with control module by the temperature demonstration, described mass-flow gas meter is connected with described data processing unit by data wire, and described mass-flow gas meter is connected with the port of export of described model ontology via valve.
Aforesaid heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, wherein, the length of described model ontology is 1.5m, and five isometric baskets that described model ontology is respectively 2.54cm, 9cm, 16cm, 9cm, 2.54cm by internal diameter are connected in series successively by sealing flange and form.
Aforesaid heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, wherein, equally spaced 15 described pressure-measuring-point interfaces and the pressure sensor of being provided with vertically on every described basket.
Compared with prior art, the utlity model has following characteristics and advantage:
1, the utility model passes through injected system, model system, the output control system cooperatively interacts, can be comparatively truly at lab simulation to the stratum gas injection, stewing well, exploitation process, and can monitor the axial pressure gradient profile rule from gas injection well (producing well) shaft bottom to stratum far-end diverse location in simulation gas injection and the exploitation process by output control system and data collection and control system, thereby find the optimum dynamic duty system in the process of handling up, for the handle up mechanism and use research of exploitation of heavy crude reservoir gas injection provides reliable data and research platform.
2, the highest reservoir pressure 45MPa of the utility model simulation simulates 150 ℃ of the highest reservoir temperatures, realistic work condition environment requirement.
3, the utility model adopts long 1.5m, 5 baskets that internal diameter is respectively 2.54cm, 9cm, 16cm, 9cm, 2.54cm adopt the flange seal mode to be composed in series successively plan one-dimensional model body, it is that 100m, internal diameter are the basket elastic energy of 2.54cm that its elastic energy is equivalent to length, can simulate the stratum elasticity of 100 meters well spacings, experimental result is more true and reliable.
4, the utility model arranges 75 pressure sensors at the one-dimensional model body along journey, the distribution characteristics of pressure in Real-Time Monitoring gas injection and the exploitation process.
5, the utility model adopts accurate injection and output control system, and automaticity is high.
Description of drawings
Accompanying drawing described here only is used for task of explanation, and is not intended to limit by any way the utility model scope of disclosure.In addition, the shape of each parts among the figure and proportional sizes etc. only are schematically, be used for helping understanding of the present utility model, and be not shape and the proportional sizes that specifically limits each parts of the utility model.Those skilled in the art can select various possible shapes and proportional sizes to implement the utility model under instruction of the present utility model as the case may be.
Fig. 1 is the structural representation of the utility model heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device;
Fig. 2 is the structured flowchart of the utility model heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device.
Description of reference numerals:
The 100-model ontology; The 1-vacuum pump; The 2-valve; 3-ISCO high-precision measuring pump; The 4-valve; 5-formation water piston container; The 6-valve; The 7-valve; 8-crude oil piston container; The 9-valve; The 10-valve; 11-injected gas piston container; The 12-valve; The 13-mass-flow gas meter; The 14-valve; 15-basket (internal diameter 2.54cm); 16-basket (internal diameter 9cm); 17-basket (internal diameter 16cm); 18-basket (internal diameter 9cm); 19-basket (internal diameter 2.54cm); 20-pressure-measuring-point interface; The 21-constant temperature sleeve; The 22-temperature shows and control module; The 23-pressure sensor; The 24-data acquisition board; The 25-PC monitoring modular; The 26-plunger displacement pump; 27-piston container; The 28-back-pressure valve; The 29-valve; 30-has the eliminator of liquid metering device; The 31-gas flowmeter; The 32-infusion pipeline; The 33-air delivering pipeline; The 34-pipeline; The 35-pipeline;
The specific embodiment
With the description of the utility model specific embodiment, can more be well understood to details of the present utility model by reference to the accompanying drawings.But the specific embodiment of the present utility model described here only is used for explaining the purpose of this utility model, is to restriction of the present utility model and can not be understood as by any way.Under instruction of the present utility model, the technician can conceive based on arbitrarily possible distortion of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
Please refer to Fig. 1, Fig. 2, be respectively structural representation and the structured flowchart of the utility model heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device.As shown in the figure, the heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device that the utility model proposes, comprise injected system, model system, output control system and data collection and control system, injected system is connected in model system, to inject formation water, crude oil and the gas of handling up in model system; The port of export of model system connects the output control system, and the output control system is used for the output of the gas mixture of control model system, and gas flow and oil production in the gas mixture of metering output; Model system also is connected by data wire with the data collection and control system, the data collection and control system is used for gathering pressure, temperature and handle up gas flow data and real time monitoring and the deal with data in the described model ontology, thereby obtains more true and reliable experimental data parameter.As shown in Figure 1, wherein:
Model system comprises model ontology 100, several pressure-measuring-point interfaces 20 and constant temperature sleeve 21, and model ontology 100 is connected in series successively by many baskets 15,16,17,18,19 and forms, and is used for the simulation well sub-surface; On every basket, be laid with vertically a plurality of pressure-measuring-point interfaces 20, be used for being installed in pressure sensor, so that the pressure of each measuring point in the detection model body 100; Be enclosed with constant temperature sleeve 21 on the tube wall of every basket, be used for the temperature of control model ontology 100.
Injected system comprises that the formation water injection unit, the crude oil that are arranged in parallel inject the unit, gases at high pressure inject the unit, and is connected in the driver element that formation water injects unit, crude oil injection unit, the outside, gases at high pressure injection unit.In the present embodiment, formation water injection unit comprises formation water piston container 5 and is arranged on the first control valve group that formation water piston container 5 both sides are used for control formation water piston container 5, i.e. valve 4 and valve 6; Crude oil injects the unit and comprises crude oil piston container 8 and be arranged on the second control valve group that crude oil piston container 8 both sides are used for control crude oil piston container 8, i.e. valve 7 and valve 9; Gases at high pressure inject the unit and comprise injected gas piston container 11 and be arranged on the 3rd control valve group that injected gas piston container 11 both sides are used for control injected gas piston container 11, i.e. valve 10 and valve 12; Driver element comprises measuring pump 3 and vacuum pump 1, in the utility model, measuring pump 3 adopts ISCO high-precision measuring pump, can certainly adopt other existing measuring pump, as long as satisfy precision and working condition requirement, measuring pump 3 is connected with formation water piston container 5, crude oil piston container 8, injected gas piston container 11 respectively by the valve 4 of the first control valve group, the valve 7 of the second control valve group, the valve 10 of the 3rd control valve group, comes Driver injection liquid (underground water and crude oil) by measuring pump 3; Injected gas piston container 11 is connected by the port of export of air delivering pipeline 33 with model ontology 100, comes the Driver injection gas of handling up by measuring pump 3.Formation water piston container 5 is connected by the entrance point of infusion pipeline 32 with model ontology 100 respectively with crude oil piston container 8, vacuum pump 1 is arranged on the infusion pipeline 32 of entrance point one side of model ontology 100, vacuum pump 1 is connected with formation water piston container 5, crude oil piston container 8 respectively by the valve 6 of the first control valve group, the valve 9 of the second control valve group, vacuum pump 1 is used for model system is vacuumized by valve 2 controls.
The output control system is connected with the port of export of model ontology 100, is used for the output oil and gas content of control model ontology 100 and gas flow and the oil production of measuring the output oil and gas content.As shown in Figure 1, this output control system comprises back pressure control module and Oil-gas Separation unit, wherein: the back pressure control module is connected in series successively by pipeline 34 by plunger displacement pump 26, piston container 27, back-pressure valve 28 and forms, the input of back-pressure valve 28 is connected via the port of export of back-pressure valve by-pass valve control 29 with model ontology 100, control the pressure decay rate of back-pressure valve 28 by the action of plunger displacement pump 26 driven plunger containers 27, realize the crude oil back production function in the model ontology 100.Plunger displacement pump 26 is connected by data wire with the data acquisition unit of data collection and control system, plays plunger displacement pump 26 is carried out the monitoring and controlling effect.The Oil-gas Separation unit is formed by eliminator 30 and gas flowmeter 31 serial connections, and eliminator 30 is connected by the output of pipeline 35 with back-pressure valve 28.Eliminator 30 is used for the output gas mixture of model ontology 100 is separated into G﹠O two parts, gas flowmeter 31 is used for the metering gas production, in this enforcement, eliminator 30 is for having the eliminator of device for measuring volumetric flow of fluid, and device for measuring volumetric flow of fluid can be used for measuring oil and gas content.
The data collection and control system, comprise data acquisition unit and data processing unit, data acquisition unit and model ontology 100 join, by pressure and temperature sensor and the intrinsic pressure of mass-flow gas meter collection model, temperature and the gas flow data of handling up; Data acquisition unit is connected with data processing unit by data wire, and data processing unit is used for real time monitoring and deal with data.As shown in Figure 1, data acquisition unit comprises a plurality of pressure sensors 23 of being arranged on each pressure-measuring-point interface 20 places, is arranged on the temperature pick up (not shown) in the constant temperature sleeve 21 and is arranged on mass-flow gas meter 13 on the air delivering pipeline 33.Pressure sensor 23 is used for the force value at each measuring point place on the measurement model body 100, pressure sensor 23 is connected with data processing unit by data acquisition board 24, in the utility model, data processing unit is the PC monitoring system that computer, control software and data processing software form, so that the transfer of data that each pressure sensor 23 detections obtain will be collected Real-time Collection, supervision and the processing that real-time data transmission to data processing unit carries out each measuring point force value by data acquisition board 24 again to data acquisition board 24.Temperature pick up shows by temperature and is connected with data processing unit with control module 22, so that to temperature demonstration and control module 22, being shown with control module 22 by temperature again, the transfer of data that the temperature pick up detection obtains to collect Real-time Collection, supervision and the processing that real-time data transmission to data processing unit carries out temperature value.Mass-flow gas meter 13 is connected with the port of export of described model ontology with valve 14 via air delivering pipeline 33, be used for metering injected gas piston container 11 to the gas flow of handling up of model ontology 100 inputs, mass-flow gas meter 13 is connected with data processing unit by data wire, and gas flow transfer of data to data processing unit carries out Real-time Collection, supervision and processing so that metering is handled up.
Like this, can simulate to stratum gas injection, stewing well, exploitation process by the utility model heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, monitor simultaneously and be presented at pressure distribution curve and the barometric gradient distribution curve of the diverse location of model ontology in gas injection and the exploitation process.Thereby find the optimum dynamic duty system in the process of handling up, for the handle up mechanism and use research of exploitation of heavy crude reservoir gas injection provides reliable data and research platform.
Further, as shown in Figure 1, five isometric baskets that model ontology 100 is respectively 2.54cm, 9cm, 16cm, 9cm, 2.54cm by internal diameter are connected in series successively by sealing flange and form, the length of model ontology 100 is 1.5m, form the one-dimensional model body, the operating pressure of model ontology 100 is 0～40MPa, maximum operating temperature is 150 ℃, it is that 100m, internal diameter are the basket elastic energy of 2.54cm that its elastic energy is equivalent to length, can simulate the stratum elasticity of 100 meters well spacings, experimental result is more true and reliable.
Further, (along journey) equally spaced 15 pressure-measuring-point interfaces 20 and pressure sensor 23 (each pressure sensor 23 is separately positioned on corresponding pressure-measuring-point interface 20 places) of being provided with vertically on every basket, detect and gather in real time the force value of model ontology 100 inner diverse locations in gas injection and the exploitation process by pressure sensor 23, and with the force value transfer of data to the data collection and control system, data processing unit uses control software can show in real time pressure distribution curve and barometric gradient distribution curve along model ontology.
When reality was used, heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment method adopted aforesaid heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device, and this experimental technique may further comprise the steps:
Step S100: injected system with saturated being injected in the model ontology 100 of formation water that formation water injects the unit, is adjusted into the reservoir pressure of setting by driver element by back-pressure valve 28;
Step S110: injected system is injected crude oil by driver element saturated being injected in the model ontology 100 of crude oil of unit;
Step S120: injected system is handled up gas pressurized after the model ontology 100 inner average pressure value by driver element with what gases at high pressure injected the unit, inject the gas of handling up to model ontology 100, mass-flow gas meter 13 measures injected gas volumes at this moment, adjust back pressures by back-pressure valve 28 simultaneously and make it the port of export (the gas inject end of namely handling up) pressure balance with model ontology 100, stewing well certain hour;
Step S130: data processing unit is by the pressure decay rate of plunger displacement pump 26 and piston container 27 control back-pressure valves 28 back pressures, until dropping to, model ontology 100 inner average pressures stop step-down when setting value, so that gas mixture displaced gradually by the port of export of model ontology 100, thereby realize back production;
Step S140: the gas mixture of output enters the Oil-gas Separation unit, respectively eliminator 30 and oily, the gas output of gas flowmeter 31 meterings by having device for measuring volumetric flow of fluid; Pressure, temperature and the gas flow data of handling up in the data collection and control system acquisition model ontology 100 are finished the first round simulated experiment of handling up.
Step S150: finish the first round and handle up after the simulated experiment, repeating step S120～S140 finishes second and takes turns the simulated experiment of handling up;
Step S160: repeat above-mentioned second and take turns the simulated experiment step of handling up, carry out the simulation process of handling up of next one, finish until reach the predetermined round of always handling up of the round of always handling up.
As shown in Figure 1, of the present utility model when concrete the use,
At first, valve-off 6, valve 9, valve 10, valve 14, valve 29 are opened valve 2, utilize 1 pair of model system of vacuum pump to vacuumize;
Secondly, valve-off 2 is opened valve 4, valve 6, utilizes ISCO high-precision measuring pump 3 with entrance point saturated be injected into model ontology 100 in of formation water in the formation water piston container 5 from model ontology 100.
Again, valve-off 7, valve 9, counterbalance valve 28 is adjusted into reservoir pressure, opens valve 29, valve 7,9, by ISCO high-precision measuring pump 3 with entrance point 15 saturated are injected into model ontology 100 in of the in-place oil in the crude oil piston container from model ontology 100.
Then, valve-off 7, valve 9, valve 29, open valve 10, utilize ISCO high-precision measuring pump 3 that the gas pressurized of handling up in the injected gas piston container 11 is opened valve 14 behind model ontology 100 internal pressure values and inject the gas of handling up, mass-flow gas meter 13 metering injected gas volumes.
Valve-off 14, utilize plunger displacement pump 26 that back pressure is increased to model ontology 100 internal pressure values, open valve 29, utilize the pressure release speed back production crude oil (being gas mixture) of plunger displacement pump 26 control back pressure, output oil gas enters eliminator 30 separation oil and gas of carrying liqs metering device and measures oil production, gas after the separation is by gas flowmeter 31 meterings, PC monitoring system Real-time Collection pressure and data on flows, when the inner average pressure of model ontology drops to setting value, valve-off 29, the first round simulated experiment of handling up finishes.
Utilize ISCO high-precision measuring pump 3 that the gas in the injected gas piston container 11 is adjusted to model ontology 100 inner average pressure value, open valve 14 and inject the gas of handling up, mass-flow gas meter 13 metering injected gas volumes.
Valve-off 14, utilize plunger displacement pump 26 that back pressure is increased to the model internal pressure value, open valve 29, utilize the pressure release speed back production crude oil of plunger displacement pump 26 control back pressure, output oil gas enters eliminator 30 separation oil and gas of carrying liqs function of measuring and measures oil production, and the gas after the separation is by gas flowmeter 31 meterings, PC monitoring system Real-time Collection pressure and data on flows, when the inner average pressure of model ontology dropped to setting value, the simulated experiment of handling up of valve-off 29, the second rounds finished.
Carry out successively the simulation process of handling up of next one according to the second round experimental procedure of handling up, until the round of always handling up of experimental design finishes experiment.
Detailed explanation for the respective embodiments described above, its purpose only is the utility model is made an explanation, so that can understand better the utility model, but, it is to restriction of the present utility model that these descriptions can not be construed to any reason, particularly, each feature of describing in different embodiments is mutual any combination also, thereby form other embodiments, except clear and definite opposite description is arranged, these features should be understood to can be applied in any one embodiment, and also not only are confined to described embodiment.
Claims (7)
1. heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device is characterized in that described experimental facilities comprises: injected system, model system, output control system and data collection and control system, wherein:
Model system, comprise model ontology, several pressure-measuring-point interface and constant temperature sleeves, described model ontology is connected in series successively by many baskets and forms, and is laid with vertically a plurality of described pressure-measuring-point interfaces on every described basket, is enclosed with described constant temperature sleeve on the tube wall of every described basket;
Injected system, comprise that the formation water that is arranged in parallel injects the unit, crude oil injects unit, gases at high pressure injection unit, and the driver element that is connected in formation water injection unit, crude oil injection unit, the outside, gases at high pressure injection unit, described formation water injects the unit and is connected with the entrance point of described model ontology by infusion pipeline respectively with described crude oil injection unit, and described gases at high pressure inject the unit and are connected with the port of export of described model ontology by air delivering pipeline;
The output control system is connected with the port of export of described model ontology, the output of the gas mixture by described output control system control model body, and gas flow and oil production in the gas mixture of metering output;
The data collection and control system comprises data acquisition unit and data processing unit, and described data acquisition unit and described model ontology join, and gathers pressure, the temperature in the described model ontology and the gas flow data of handling up by described data acquisition unit; Described data acquisition unit is connected with described data processing unit by data wire, by described data processing unit real time monitoring and deal with data.
2. heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device as claimed in claim 1 is characterized in that, described formation water injects the first control valve group that the unit comprises formation water piston container and is arranged on described formation water piston container both sides; Described crude oil injects the second control valve group that the unit comprises crude oil piston container and is arranged on described crude oil piston container both sides; Described gases at high pressure inject the 3rd control valve group that the unit comprises injected gas piston container and is arranged on described injected gas piston container both sides; Described driver element comprises measuring pump and vacuum pump, and described measuring pump is connected with described formation water piston container, crude oil piston container, injected gas piston container respectively by described the first control valve group, the second control valve group, the 3rd control valve group; Described vacuum pump is arranged on the described infusion pipeline of entrance point one side of described model ontology.
3. heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device as claimed in claim 1, it is characterized in that, the output control system comprises back pressure control module and Oil-gas Separation unit, described back pressure control module is connected in series successively by pipeline by plunger displacement pump, piston container, back-pressure valve and forms, the input of described back-pressure valve is connected with the port of export of described model ontology via the back-pressure valve by-pass valve control, and described plunger displacement pump is connected by data wire with described data acquisition unit; Described Oil-gas Separation unit is formed by eliminator and gas flowmeter serial connection, and described eliminator is connected with the output of described back-pressure valve by pipeline.
4. heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device as claimed in claim 3 is characterized in that described eliminator is the eliminator with device for measuring volumetric flow of fluid.
5. heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device as claimed in claim 1, it is characterized in that described data acquisition unit comprises a plurality of pressure sensors of being arranged on each described pressure-measuring-point interface, be arranged on the temperature pick up in the described constant temperature sleeve and be arranged on mass-flow gas meter on the described air delivering pipeline; Described pressure sensor is connected with described data processing unit by data acquisition board, described temperature pick up is connected with described data processing unit with control module by the temperature demonstration, described mass-flow gas meter is connected with described data processing unit by data wire, and described mass-flow gas meter is connected with the port of export of described model ontology via valve.
6. heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device as claimed in claim 1, it is characterized in that, the length of described model ontology is 1.5m, and five isometric baskets that described model ontology is respectively 2.54cm, 9cm, 16cm, 9cm, 2.54cm by internal diameter are connected in series successively by sealing flange and form.
7. heavy crude reservoir gas injection huff and puff oil recovery physical simulation experiment device as claimed in claim 6 is characterized in that, equally spaced 15 described pressure-measuring-point interfaces and the pressure sensor of being provided with vertically on every described basket.
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