CN206177773U - Experimental device for imbibition of special hypotonic oil reservoir developments of simulation crack nature - Google Patents
Experimental device for imbibition of special hypotonic oil reservoir developments of simulation crack nature Download PDFInfo
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- CN206177773U CN206177773U CN201621190529.5U CN201621190529U CN206177773U CN 206177773 U CN206177773 U CN 206177773U CN 201621190529 U CN201621190529 U CN 201621190529U CN 206177773 U CN206177773 U CN 206177773U
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Abstract
The utility model relates to an experimental device for imbibition of special hypotonic oil reservoir developments of simulation crack nature. The device is including confining pressure pump, constant flow pump and constant temperature box body, be provided with intermediate receptacle, rock core imbibition room, oily water metering module and heating device in the constant temperature box body, oil water metering module includes water volume measurement device and oil quantity measurement device through fourth intercommunication valve intercommunication, the top end opening and the oily water metering module intercommunication of rock core imbibition room, the bottom openings of rock core imbibition room passes through intermediate receptacle and constant flow pump intercommunication. Are the different rerum naturas of the device measurable quantity hypotonic special hypotonic rock core imbibition petroleum production under uniform temperature and pressure concerns along with time change, and then study the influence to imbibition volume of different crack size, water drive speed and water drive cycle isoparametric.
Description
Technical field
The utility model is related to a kind of experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition, belongs to Fractured special
The technical field of low-permeability oil deposit waterflooding development.
Background technology
Fractured is hypotonic, ultralow permeable reservoir is prevalent in domestic multiple oil field, is the main latent of current oil-gas field development
Power area；Fractured extra-low permeability oil reservoirs have essence compared with conventional pore type oil reservoir in terms of reservoir structure and mechanism of oil displacement
Difference；Waterflooding extraction is the only way which must be passed of such oil reservoir development, fine and close yet with reservoir matrix, and water absorbing capacity is poor, splits
Seam system oil displacement efficiency is higher, and matrix system oil displacement efficiency is relatively low, has arrived the production middle and later periods, and large-scale remaining oil enrichment is in base
In matter.During waterflooding development, the profit imbibition metathesis between matrix-Fracture System is that Fractured extra-low permeability oil reservoirs are opened
The oil recovery mechanism for sending out important, how effectively by the oil extraction in matrix system out, be waterflood development of low-permeability reservoirs into
The key of work(.
For Fractured Low-Permeability Reservoir, conventional waterflooding extraction, easily there is water breakthrough in injection water, cause oil along fractuer direction
Well sudden water flooding, also results in the rising of Fracture System water saturation, and inefficient cycle occurs in injection water, and utilization rate is low, finally, greatly
Amount crude oil cannot be produced in being enriched in matrix, and development effectiveness is poor；Cyclic waterflooding method is that one kind is suitable for Fractured extra-low permeability
The effective ways of reservoir waterflooding, the pressure disturbance that it is produced has encouraged matrix and interstitial oil and water displacement effect, so that
Will be oily mined in matrix, it is sharp its essence is Fracture System is given full play to as the favorable factor supplied water with oil flow channel
With difference between reservoir pre ssure and injection pressure, host rock compressibility and elasticity of fluid expansion, capillary imbibition are acted on, and promote crude oil to flow to crack from matrix
System, then carries out the water drive oil process of Fracture System, so eliminates to a certain extent because of the crack that continuous water filling is produced
Water breakthrough and matrix water seal problem, expand the swept volume of matrix system, so as to improve oil displacement efficiency.
After rock sample is processed into Standard rock sample, the situation of the oil extraction that absorbed water using volumetric method or mass method measurement rock, is mesh
The main method of preceding imbibition experiment, but static spontaneous imbibition experiment, it is impossible to preferably simulation fracture ultralow permeable reservoir water drive
During occur dynamic imbibition phenomena；
Therefore, it is necessary to find a kind of reality of dynamic imbibition that can be during simulation fracture extra-low permeability oil reservoirs water drive
Experiment device, to study the factor fracture extra-low permeability oil reservoirs waterflooding development mistake such as water drive cycle, water drive velocity and fracture parameters
The affecting laws of dynamic imbibition in journey, certain theory support is provided for such oil reservoir improves water flooding effectiveness.
Chinese patent CN104806214A discloses a kind of imbibition oil production method and laboratory mould suitable for LOW PERMEABILITY RESERVOIR
Plan method.The method elaborates a kind of imbibition oil production method and laboratory test analogy method for LOW PERMEABILITY RESERVOIR.Elaborate imbibition
Oil production method application at the scene, its dynamic is the imbibition oil production method of cycle pressure fluctuation category, in laboratory simulation
Part, will inject imbibition agent, then the process of water drive again after water drive oil to moisture content 98%, repeat multiple cycles, and its essence exists
In it periodically.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of reality of simulation fracture ultralow permeable reservoir dynamic imbibition
Experiment device.
Term explanation：
The saturation simulation oil rock heart：In order to reach experimental simulation result closer to actual, using natural core and preparation and oil
The close simulated formation water and simulated formation crude oil of reservoir property is hidden, saturation simulation stratum water is carried out to rock core sets up irreducible water satisfying
And degree, saturation simulation crude oil sets up initial oil saturation, forms standby rock core, the abbreviation saturation simulation oil rock heart.
The technical solution of the utility model is：
A kind of experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition, including confined pressure pump, constant flow pump and insulating box
Body；
Intermediate receptacle, rock core imbibition room, oil-water metering module and heater are provided with the thermostatic box；
The oil-water metering module includes the flowmeter and oil mass metering device that are connected by the 4th communicating valve；Rock
The top end opening of heart imbibition room is connected with oil-water metering module, and the bottom end opening of rock core imbibition room is connected with the second stress sensing
Device；
The first strain gauge is connected with side wall on the upside of rock core imbibition room, the first strain gauge connects with confined pressure pump
Connect；Second strain gauge is connected by intermediate receptacle with constant flow pump；First strain gauge and the second strain gauge are distinguished
Measure confined pressure and rock core imbibition room upstream pressure；It is for dynamic crack is oozed during simulation water drive that the experimental provision sets confined pressure
Imbibition phenomena during stream.
Be present potential difference in oil mass metering device and flowmeter, and connected with the 4th communicating valve therebetween, by the
Connectedness between both switch controls of four communicating valves.
Preferably, the constant flow pump is connected with constant current oil pump feed bottle.
Preferably, light source and temperature sensor are additionally provided with the thermostatic box, the temperature sensor is fixed on perseverance
Warm casing top, the temperature sensor is connected with temperature indicator；Ventilating opening is provided with the tank wall of thermostatic box.Temperature is passed
Sensor is used to measure thermostatic box temperature.Ventilating opening is set, by cross-ventilation, the temperature in the thermostatic box is kept permanent
It is fixed；Secondly, a confined space will be formed if being not provided with ventilating opening, in the thermostatic box, when air in confined space
During heating, air heating expansion may change the air pressure in thermostatic box, form high pressure hidden danger.
Preferably, the intermediate receptacle, rock core imbibition room and oil-water metering module are fixedly installed on perseverance by fixed support
In incubator body.
Preferably, the first strain gauge and the second strain gauge are connected to signal output part.The stress is passed
The precision of sensor can reach 0.1mg；The signal output part is pressure display instrument.
Preferably, the oil mass metering device is connected with the top end opening of rock core imbibition room by third connecting valve.
Preferably, the oil mass metering device includes the liquid storage bottle and fuel gauging graded tube that connection is set, liquid storage bottle
Volume space is 200mL, and fuel gauging graded tube is highly 350mm, and effective depth is 300mm, and range is 2mL；The water
The volume of metering device is 550mL, is highly 300mm, and effective depth is 250mm；Scale range is 500mL.
Preferably, the heater includes heating wire and radiator valve.Radiator valve is used to control electro-heat equipment
Working condition, regulation and control thermostatic box temperature.
Preferably, confined pressure pump is connected by confined pressure regulating valve with the first strain gauge；Constant flow pump passes through the first communicating valve
Connected with intermediate receptacle；Intermediate receptacle is connected by the second communicating valve with the second strain gauge；Flowmeter bottom sets
It is equipped with the first tapping valve.
The system instrument is equipped with and uses pressure line.
Preferably, the rock core imbibition room includes, cylinder, built-in packing element, top plug and bottom plug；Built-in packing element with
Barrel jacket connects in succession, and built-in packing element constitutes body annular space with cylinder；Top plug and bottom plug are separately positioned on rock core imbibition
The top and bottom of room；Built-in packing element, top plug and bottom plug surround core chamber jointly.Body annular space encloses for loading
Pressure.
A kind of experimental technique using above-mentioned experimental provision simulation fracture ultralow permeable reservoir water drive imbibition, including step is such as
Under：
1) simulated formation water is filled in intermediate receptacle, opening constant flow pump carries out constant speed displacement, the gas in vent line is closed
Close constant flow pump；
2) the saturation simulation oil rock heart is put into core chamber, confined pressure is added to the saturation simulation oil rock heart, in regulating thermostatic casing
Temperature, opening constant flow pump carries out constant speed displacement, records displacement flow and displacement pressure；
3) oil-water metering is carried out：Oil mass metering device is introduced into by the fluid of rock core imbibition room, when oil-water interfaces are in oil
More than gauge amount graded tube zero graduation line, read record oil mass volume；Then the 4th communicating valve is opened, fluid enters water consumption measurement
Device, when fluid level drops to fluid level markings graduation mark in oil mass metering device, closes the 4th communicating valve, reads record water
Measure the volume of metering device reclaimed water；The first tapping valve is finally opened, the fluid in flowmeter is completely exhausted out, first is closed
Tapping valve；
4) comprehensive analysis is carried out to the experimental data for recording, summarizes imbibition rule during Fractured extra-low permeability oil reservoirs water drive
Rule, Lab-evaluation is carried out with reference to correlation theory.
Preferably, the step 2) in confined pressure size be 0-0.4 times of displacement pressure.Due to simulation fracture seepage flow, drive
For the general very little of pressure.
Preferably, step 1) before also include infrastest the step of；Specific method is that the saturation simulation oil rock heart is carried out
Cleaning, drying and processing, measure saturation simulation oil core parameters, carry out vacuumizing saturated oils experiment；Simulation oil core parameters include,
Porosity, permeability, rock sample length and rock sample diameter.
Preferably, the step 3) in, when the amount of liquid collected is larger, repeat to open and close the 4th communicating valve and keying first
The step of tapping valve, until the liquid being completely exhausted out in oil-water metering module.
Preferably, the temperature range in the thermostatic box is 20 DEG C~80 DEG C.
The beneficial effects of the utility model are：
1. the experimental provision of simulation fracture ultralow permeable reservoir described in the utility model dynamic imbibition, measurable different physical property
Hypotonic-special low permeability cores imbibition oil production under uniform temperature and pressure changes with time relation；And then study different cracks
The influence of the parameter to imbibition amount such as size, water drive speed and water drive cycle, summarizes its affecting laws, is that this Domain Theory grinds
Offer experiment basis are provided；
2. the experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition described in the utility model, can be enclosed by regulation
The magnitude relationship of pressure and displacement pressure, realizes simulation of the dynamic crack with displacement imbibition process under reservoir condition, is preferably to solve
Release Fractured extra-low permeability oil reservoirs water-flooding pressure gradient theory and experiment basis are provided；Oil-water metering module and rock core imbibition room point
Open, the pressurization of rock core imbibition room does not interfere with the metering to fluid, realizes that profit is separately measured, can realize that long-time, big flow are driven
For the metering of process medium fluid；
3. the experimental provision of simulation fracture ultralow permeable reservoir described in the utility model dynamic imbibition, the utility model device
Two processes of crack displacement and matrix imbibition, this device rock during Fractured extra-low permeability oil reservoirs waterflooding development are considered
Heart imbibition room can realize the experimental simulation to the two processes；Compared to conventional imbibition equipment, certain pressure can be carried, made
Experimentation is closer to the real process under reservoir condition.
Brief description of the drawings
Fig. 1 is the structural representation of the experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition described in the utility model
Figure；
Fig. 2 is the structural representation of oil-water metering module described in the utility model；
Fig. 3 is the structural representation of rock core imbibition room；
Wherein, 1, confined pressure pump；2nd, confined pressure regulating valve；3rd, constant flow pump；4th, constant current oil pump feed bottle；5th, the first communicating valve；6th, it is permanent
Incubator body；7th, heater；8th, ventilating opening；9th, light source；10th, temperature sensor；11st, temperature indicator；12nd, fixed support；13、
Intermediate receptacle；14th, rock core imbibition room；15th, oil-water metering module；16th, flowmeter；17th, oil mass metering device；18th,
Two communicating valves；19th, third connecting valve；20th, the 4th communicating valve；21st, the first tapping valve；22nd, the second strain gauge；23rd, first
Strain gauge；24th, first pressure display instrument；25th, second pressure display instrument；26th, fuel gauging graded tube；27th, fluid level markings
Groove.28th, cylinder；29th, core chamber；30th, built-in packing element；31st, plug；32nd, body annular space；33rd, bottom plug.
Specific embodiment
The utility model is described further with reference to embodiment and Figure of description, but not limited to this.
Embodiment 1
As shown in Figure 1.
A kind of experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition, including confined pressure pump 1, constant flow pump 3 and constant temperature
Casing 6；
Intermediate receptacle 13, rock core imbibition room 14, oil-water metering module 15 and heater are provided with the thermostatic box 6
7；
The oil-water metering module 15 includes the flowmeter 16 and the fuel gauging that are connected by the 4th communicating valve 20
Device 17；The top end opening of rock core imbibition room 14 is connected with oil-water metering module 15, and the bottom end opening of rock core imbibition room is connected with
Second strain gauge 22；
The first strain gauge 23, the first strain gauge 23 and confined pressure pump are connected with side wall on the upside of rock core imbibition room
1 connection；Second strain gauge 22 is connected by intermediate receptacle 13 with constant flow pump 3；First strain gauge 23 and the second stress
Sensor 22 measures confined pressure and rock core imbibition room upstream pressure respectively；It is simulation water drive process that the experimental provision set confined pressure to be
Imbibition phenomena in middle dynamic crack flow event.
Be present potential difference in oil mass metering device 17 and flowmeter 16, and connected with the 4th communicating valve 20 therebetween,
By the connectedness between both the switch controls of the 4th communicating valve 20.
Embodiment 2
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, it is described
Constant flow pump is connected with constant current oil pump feed bottle 4.
Embodiment 3
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, it is described
Light source 9 and temperature sensor 10 are additionally provided with thermostatic box 6, the temperature sensor 10 is fixed on the top of thermostatic box 6, institute
State temperature sensor 10 and be connected with temperature indicator 11；Ventilating opening 8 is provided with the tank wall of thermostatic box 6.Temperature sensor 10
Temperature for measuring thermostatic box 6.Ventilating opening 8 is set, by cross-ventilation, temperature in the thermostatic box 6 is kept permanent
It is fixed；Secondly, if being not provided with ventilating opening 8, a confined space will be formed in the thermostatic box 6, when empty in confined space
When gas is heated, air heating expansion may change the air pressure in thermostatic box 6, form high pressure hidden danger.
Embodiment 4
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, it is described
Intermediate receptacle 13, rock core imbibition room 14 and oil-water metering module 15 are fixedly installed in thermostatic box 6 by fixed support 12.
Embodiment 5
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, first
The strain gauge 22 of strain gauge 23 and second is connected to first pressure display instrument 24 and second pressure display instrument 25.The
The precision of one strain gauge 23 and the second strain gauge 22 can reach 0.1mg.
Embodiment 6
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, it is described
Oil mass metering device 17 is connected with the top end opening of rock core imbibition room 14 by third connecting valve 19.
Embodiment 7
As shown in Figure 2.
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, it is described
Oil mass metering device 17 includes the liquid storage bottle and fuel gauging graded tube 26 that connection is set, and the volume space of liquid storage bottle is 200mL,
The height of fuel gauging graded tube 26 is 350mm, and effective depth is 300mm, and range is 2mL；The appearance of the flowmeter 16
Product is 550mL, is highly 300mm, and effective depth is 250mm；Scale range is 500mL.
Embodiment 8
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, it is described
Heater includes heating wire and radiator valve.Radiator valve is used to control the working condition of electro-heat equipment, regulation and control
Thermostatic box temperature processed.
Embodiment 9
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, confined pressure
Pump 1 is connected by confined pressure regulating valve 2 with the first strain gauge 23；Constant flow pump 3 is connected by the first communicating valve 5 with intermediate receptacle 13
It is logical；Intermediate receptacle 13 is connected by the second communicating valve 18 with the second strain gauge 22；The bottom of flowmeter 16 is provided with
First tapping valve 21.
Embodiment 10
As shown in Figure 3.
The experimental provision of simulation fracture ultralow permeable reservoir dynamic imbibition as described in Example 1, except that, it is described
Rock core imbibition room 14 includes, cylinder 28, built-in packing element 30, top plug 31 and bottom plug 33；Built-in packing element 30 and cylinder 28
Socket connection, built-in packing element 30 constitutes body annular space 32 with cylinder 28；Top plug 31 and bottom plug 33 are separately positioned on rock
The top and bottom of heart imbibition room 14；Built-in packing element 30, top plug 31 and bottom plug 33 surround core chamber jointly.Body ring
Empty 32 are used to load confined pressure.
Claims (6)
1. the experimental provision of a kind of simulation fracture ultralow permeable reservoir dynamic imbibition, it is characterised in that including confined pressure pump, constant flow pump
And thermostatic box；Intermediate receptacle, rock core imbibition room, oil-water metering module and heater are provided with the thermostatic box；Institute
Stating oil-water metering module includes the flowmeter and oil mass metering device that are connected by the 4th communicating valve；Rock core imbibition room
Top end opening is connected with oil-water metering module, and the bottom end opening of rock core imbibition room is connected with the second strain gauge；Rock core imbibition
The first strain gauge is connected with side wall on the upside of room, the first strain gauge is connected with confined pressure pump；Second strain gauge
Connected with constant flow pump by intermediate receptacle.
2. the experimental provision of simulation fracture ultralow permeable reservoir according to claim 1 dynamic imbibition, it is characterised in that institute
State and be additionally provided with thermostatic box light source and temperature sensor, the temperature sensor is fixed on thermostatic box top, the temperature
Degree sensor is connected with temperature indicator；Ventilating opening is provided with the tank wall of thermostatic box.
3. the experimental provision of simulation fracture ultralow permeable reservoir according to claim 1 dynamic imbibition, it is characterised in that institute
Oil mass metering device is stated to be connected by third connecting valve with the top end opening of rock core imbibition room.
4. the experimental provision of simulation fracture ultralow permeable reservoir according to claim 1 dynamic imbibition, it is characterised in that institute
Stating oil mass metering device includes liquid storage bottle and fuel gauging graded tube that connection is set, and the volume space of liquid storage bottle is 200mL, oil
Gauge amount graded tube is highly 350mm, and effective depth is 300mm, and range is 2mL；The volume of the flowmeter is
550mL, is highly 300mm, and effective depth is 250mm；Scale range is 500mL.
5. the experimental provision of simulation fracture ultralow permeable reservoir according to claim 1 dynamic imbibition, it is characterised in that enclose
Press pump is connected by confined pressure regulating valve with the first strain gauge；Constant flow pump is connected by the first communicating valve with intermediate receptacle；In
Between container be connected with the second strain gauge by the second communicating valve；Flowmeter bottom is provided with the first tapping valve.
6. the experimental provision of simulation fracture ultralow permeable reservoir according to claim 1 dynamic imbibition, it is characterised in that institute
Stating rock core imbibition room includes, cylinder, built-in packing element, top plug and bottom plug；Built-in packing element connects in succession with barrel jacket, built-in
Packing element constitutes body annular space with cylinder；Top plug and bottom plug are separately positioned on the top and bottom of rock core imbibition room；It is interior
Put packing element, top plug and bottom plug and surround core chamber jointly.
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| CN201621190529.5U CN206177773U (en) | 2016-10-28 | 2016-10-28 | Experimental device for imbibition of special hypotonic oil reservoir developments of simulation crack nature |
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| CN201621190529.5U CN206177773U (en) | 2016-10-28 | 2016-10-28 | Experimental device for imbibition of special hypotonic oil reservoir developments of simulation crack nature |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109459556A (en) * | 2018-12-05 | 2019-03-12 | 中国石油大学(北京) | Dynamic imbibition device and the experimental method tested for dynamic imbibition |
| CN109696388A (en) * | 2018-12-29 | 2019-04-30 | 浙江海洋大学 | The experimental provision of cracking rock core imbibition in a kind of simulated formation environment |
| CN109709266A (en) * | 2018-12-03 | 2019-05-03 | 中国石油集团川庆钻探工程有限公司 | A kind of straight well stratified reservoir flowing simulated experiment device and method |
| CN109856030A (en) * | 2019-02-15 | 2019-06-07 | 中国石油大学(北京) | The determination method of imbibition experimental provision and imbibition recovery percent of reserves |
| CN112611686A (en) * | 2021-01-11 | 2021-04-06 | 东北石油大学 | Dynamic imbibition experimental device and experimental method thereof |
| CN113250662A (en) * | 2021-06-17 | 2021-08-13 | 长江大学 | Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method |
| CN113670793A (en) * | 2021-08-27 | 2021-11-19 | 中国石油大学(华东) | Hydraulic fracture permeability real-time monitoring device and method considering formation creep and stress interference between fractures |
| CN114062217A (en) * | 2020-08-07 | 2022-02-18 | 中国石油化工股份有限公司 | Saturated rock core under-pressure imbibition experimental device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109709266A (en) * | 2018-12-03 | 2019-05-03 | 中国石油集团川庆钻探工程有限公司 | A kind of straight well stratified reservoir flowing simulated experiment device and method |
| CN109459556A (en) * | 2018-12-05 | 2019-03-12 | 中国石油大学(北京) | Dynamic imbibition device and the experimental method tested for dynamic imbibition |
| CN109459556B (en) * | 2018-12-05 | 2022-07-08 | 中国石油大学(北京) | Dynamic imbibition device and experimental method for dynamic imbibition experiment |
| CN109696388A (en) * | 2018-12-29 | 2019-04-30 | 浙江海洋大学 | The experimental provision of cracking rock core imbibition in a kind of simulated formation environment |
| CN109856030A (en) * | 2019-02-15 | 2019-06-07 | 中国石油大学(北京) | The determination method of imbibition experimental provision and imbibition recovery percent of reserves |
| CN114062217A (en) * | 2020-08-07 | 2022-02-18 | 中国石油化工股份有限公司 | Saturated rock core under-pressure imbibition experimental device and method |
| CN112611686A (en) * | 2021-01-11 | 2021-04-06 | 东北石油大学 | Dynamic imbibition experimental device and experimental method thereof |
| CN112611686B (en) * | 2021-01-11 | 2023-10-13 | 东北石油大学 | Dynamic imbibition experimental device and experimental method thereof |
| CN113250662A (en) * | 2021-06-17 | 2021-08-13 | 长江大学 | Imbibition oil production method suitable for low-permeability reservoir and laboratory simulation method |
| CN113670793A (en) * | 2021-08-27 | 2021-11-19 | 中国石油大学(华东) | Hydraulic fracture permeability real-time monitoring device and method considering formation creep and stress interference between fractures |
| CN113670793B (en) * | 2021-08-27 | 2023-05-16 | 中国石油大学(华东) | Hydraulic fracture permeability real-time monitoring device and method |
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