CN106769752A - Rotatable imbibition experimental provision - Google Patents
Rotatable imbibition experimental provision Download PDFInfo
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- CN106769752A CN106769752A CN201611073623.7A CN201611073623A CN106769752A CN 106769752 A CN106769752 A CN 106769752A CN 201611073623 A CN201611073623 A CN 201611073623A CN 106769752 A CN106769752 A CN 106769752A
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- imbibition
- mounting seat
- container
- rock sample
- rotatable
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- 238000005213 imbibition Methods 0.000 title claims abstract description 80
- 239000011435 rock Substances 0.000 claims abstract description 84
- 239000011521 glass Substances 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 8
- 238000000605 extraction Methods 0.000 abstract description 7
- 230000004069 differentiation Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 33
- 238000000034 method Methods 0.000 description 19
- 238000002474 experimental method Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 16
- 239000010779 crude oil Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000002591 computed tomography Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 210000005239 tubule Anatomy 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 241000009298 Trigla lyra Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
- G01N15/0893—Investigating volume, surface area, size or distribution of pores; Porosimetry by measuring weight or volume of sorbed fluid, e.g. B.E.T. method
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention is a kind of rotatable imbibition experimental provision, including glass container, mounting seat, motor, rotation dish and rock sample clamper.Glass container is sealingly mounted at mounting seat upper end；Liquid and rock sample to be measured are loaded with container, rock sample to be measured is immersed in liquid and by rock sample gripper.The top of container has transparent measurement pipe, and measurement pipe is provided with scale.Motor is arranged in mounting seat, and is connected with rotation dish by rotary shaft, and rock sample clamper is connected in rotation dish, and motor-driven rock sample clamper rotates in liquid.The precision of imbibition oil extraction volume metering is improved, the measurement error of existing imbibition instrument is solved the problems, such as.The present invention drives the rotation of rock sample clamper by motor, the oil droplet for sticking to core surface is set to depart from core surface under the action of the centrifugal force, and under gravitational differentiation being floated to measurement pipe, oil is gathered into measurement pipe, improve the precision of imbibition oil extraction volume metering.
Description
Technical field
The present invention is the evaluating apparatus on rock core infiltration in a kind of petroleum gas engineering field, more particularly to one
Plant rotatable imbibition experimental provision.
Background technology
In the oil and gas reservoirs such as low-permeability oil deposit, compact oil reservoir, Carbonate Reservoir, there is different degrees of crack to send out
Educate, osmotic system can include Fracture System and matrix system.The production mechanism of this oil reservoir is mainly shown as：In Fracture System
Under flowing pressure gradient effect between matrix system, injection water enters sillar oil extraction (gas)；Water in Fracture System leans on hair
Sillar oil extraction (gas) is penetrated into the effect of tubule power；Oil (gas) water inside and outside sillar separates oil extraction.Obviously, hydrophilic fine and close sillar, water
Capillary imbibition effect be main oil recovery mechanism.This oil recovery (gas) mechanism is exactly to be used as arranging repelling crude oil by imbibition
The power of (gas), realizes the effective exploitation of reservoir Crude Oil (gas).Rock core imbibition laboratory experiment is usually used in predicting and evaluating water drive
Development effectiveness.
For above-mentioned low-permeability oil deposit, compact oil reservoir and Carbonate Reservoir, its imbibition effect is generally using room at this stage
Interior rock core carries out imbibition measure of merit as research object to typical core, and the instrument for relating generally among these is exactly imbibition instrument.
By investigation extensively, Physical Experiment and measuring method mainly include volumetric method, mass method and CT scan in existing imbibition room
Method.Because hyposmosis, compact oil reservoir porosity are less compared with low oil content, imbibition discharge oil mass is also little, and during due to imbibition
Between very long, few very few of discharge oil mass in a period of time, while this small amount of oil often adsorb rock surface rather than
Imbibition bottle metering section is floated to, causes error in dipping very big.
The experiment of imbibition volumetric method mainly includes imbibition in the same direction and reverse imbibition method.The main original of imbibition volumetric method experiment in the same direction
Reason is connected with equipped with the container of rock core with capillary with a scale, is surveyed by observing before and after imbibition in capillary level change
Measure the size of rock core imbibition amount.Reverse imbibition volumetric method experiment is that rock core is completely submerged in liquid, because imbibition acts on rock
The mutually wetted phase displacement of intracardiac non-wetted out, is under gravity converged in the tubule of container top, is held by measuring
Liquid or gas volume at the top of device, obtain imbibition recovery ratio.But it is static due to being remained in experimentation, there is part imbibition
Crude oil can due to the adhesion of core surface and blocking for end cannot gravitational differentiation in the tubule of top, and cannot realize effectively
Metering, considerable influence is produced to imbibition measurement result.In addition by taking water-oil phase as an example, when in experiment container due to misoperation
And when there is air inlet phenomenon, existing imbibition instrument can not be carried out effectively eliminating to it and easily processed, for experiment
Fast and effectively had a huge impact, the high-volume that strongly limit experiment repeats.
The general principle of mass method is arm of force torque and lever principle, and connecting rod one end is ined succession the container equipped with rock core, another
End is placed on the counterweight of known quality on electronic balance.One end face of rock core is contacted into (imbibition in the same direction) with fountain solution or by rock core
It is fully immersed in liquid (reverse imbibition), at regular intervals recorded electronic balance reading, untill quality is not further added by,
The percentage E of total pore size volume is accounted for so as to the wetting liquid measure for trying to achieve moment suctiontWith imbibition volume Vwt.The method principle is simple
Easy to operate, precision is higher, but imbibition oil (gas) adhered to for core surface is not measured effectively yet.
CT scan method is linear attenuation coefficient when penetrating object by determining X-ray, so as to obtain the graphics of the total rock heart
Picture.CT scan technology biggest advantage can be to carry out hole into figure, obtain more accurate core porosity and liquid in rock
The regularity of distribution of interior portion, and this is also the aspect that imbibition experiment is most paid close attention to, especially to the unconventional oil such as tight rock and shale
Gas.CT scan technology has lot of advantages in terms of imbibition qualitative analysis, for example, analyze the change rule of rock core inside imbibition leading edge
Rule, the transformation relation of capillary force and gravity leading position in imbibition driving force, solution-air imbibition it is identical with liquid-liquid imbibition rule and
Difference, the regularity of distribution of the internal anisotropism to wetting phase and non-wetted inside rock core.CT scan method mainly stresses
In the qualitative description of experimental result, the Changing Pattern of research rock core inside imbibition leading edge, the measure for imbibition effect can not
It is applicable well, and the CT scan technology spending time is long, somewhat expensive, repeatable poor, complex operation, instrument itself precision pair
Experimental result influence is very big.
Foregoing existing experiment and measuring method not can solve imbibition oil (gas) of core surface adhesion
Influence problem to experimental result accuracy.
Thus, the present inventor relies on the experience and practice for being engaged in relevant industries for many years, proposes a kind of rotatable imbibition experiment
Device, to overcome the defect of prior art.
The content of the invention
It is an object of the invention to provide a kind of rotatable imbibition experimental provision, the essence of imbibition oil extraction volume metering is improved
Degree, solves the problems, such as the measurement error of existing imbibition instrument.
Another object of the present invention is to provide a kind of rotatable imbibition experimental provision, existing imbibition instrument is solved in clamping rock
There is a problem of the lower end effect of blocking during the heart and cause measurement error.
It is still another object of the present invention to provide a kind of rotatable imbibition experimental provision, can easily process rapidly in testing
Air inlet phenomenon, eliminate error in dipping.
The object of the present invention is achieved like this, a kind of rotatable imbibition experimental provision, the rotatable imbibition experiment dress
Put including：
Mounting seat；
Container, it is sealingly mounted at the mounting seat upper end；Liquid and rock sample to be measured are loaded with the container, it is described to treat
Rock sample is surveyed to be immersed in the liquid and by a rock sample gripper；The top of the container has transparent measurement pipe,
The measurement pipe is provided with scale；And
Rotating driving device, it is arranged in the mounting seat, and is connected with the rock sample clamper, drives the rock sample
Clamper rotates in the liquid.
In a better embodiment of the invention, the container is the glass infuser of ladder circle cylindricality, the glass infuser
Bottom is enlarged diameter section, and the top of the glass infuser is elongated tubular, and the elongate tubular is into the measurement pipe.
In a better embodiment of the invention, the rotating driving device includes：
Motor, its lower end for being arranged on the mounting seat, the rotating speed of the motor can be adjusted；And
Rotation dish, it is located in the container, and the rock sample clamper, the motor and institute are installed in the rotation dish
Rotation dish connection is stated, the rotation disc spins are driven.
In a better embodiment of the invention, axial passage is provided with the mounting seat；The motor connection one
Rotary shaft, the rotary shaft is extend into the container through the axial passage, and the rotary shaft is fixedly connected the rotation
Disk；Sealed by sealing device between the rotary shaft and the mounting seat.
In a better embodiment of the invention, the lower end of the mounting seat is fixedly connected a support, the motor
It is fixedly connected on the bracket；The rotary shaft is rotatably connected in the axial passage by bearing.
In a better embodiment of the invention, the mounting seat be provided with the container inside connect enter discharge opeing
Mouthful, it is described enter leakage fluid dram by pipeline connection pump, the pipeline is provided with switch valve.
In a better embodiment of the invention, the top of the measurement pipe is provided with switch valve.
In a better embodiment of the invention, the rock sample clamper includes at least three circles along the rotation dish
The equally distributed supporting rod of circumferential direction, the supporting rod is protruding perpendicular to the card of the rotation dish, the supporting rod
One end can be connected in the rotation dish with radially sliding along the rotation dish.
In a better embodiment of the invention, the rotation dish is provided with slip corresponding with the supporting rod quantity
Groove, the sliding groove to form radial along radially extending for the rotation dish；One end of the supporting rod can be slidably connected
In the sliding groove.
In a better embodiment of the invention, the upper outside of the mounting seat is provided with the annular for extending radially out
Flange, the upper end of the mounting seat is extend into the container, and the port of the container is resisted against in the annular flange；It is described
It is tightly connected using sealing ring between the upper end of mounting seat and the container；Between the port of the container and the annular flange
Sealed by the sealing clamp of annular and be connected together.
From the above mentioned, experimental provision of the invention drives and is located in glass container by setting motor in mounting seat
Rotation dish and rock sample clamper rotate together, rock sample clamper will not block the upper and lower end face of rock sample to be measured, by centrifugation make
With, and the setting of corresponding rotating speed is carried out for various sizes of rock core and crude oil, eliminate core surface adhesion oil (gas) and
Influence of the rock core lower end effect of blocking to measurement result, solves the problems, such as the measurement error of existing imbibition instrument；By entering leakage fluid dram
The cooperation of switch valve, can effectively eliminate the influence of air inlet in experimentation in setting and measurement pipe, can have on air inlet influence
Imitate and quickly eliminate and solve.The experimental provision measurement process is simple, widely applicable, high precision, it is repeatable utilize, drop significantly
Low experimental cost.
Brief description of the drawings
The following drawings is only intended to, in schematic illustration and explanation is done to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1：It is the structural representation of rotatable imbibition experimental provision of the invention.
Fig. 2：It is annexation schematic diagram of the rotatable imbibition experimental provision of the invention in experimentation.
Fig. 3：It is the imbibition process schematic of rotatable imbibition experimental provision of the invention.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now control illustrates this hair
Bright specific embodiment.
As shown in figure 1, as one of specific embodiment of the invention, and non-specific limits the scope of the present invention.One
Rotatable imbibition experimental provision 100 is planted, is mainly used to evaluate rock core infiltration and effect, can be used to predicting and evaluating hypotonic
Thoroughly, compact oil reservoir and fractured reservoir etc. rely primarily on the effect of the oil reservoir of imbibition effect exploitation.Specifically with compact reservoir, carbonic acid
The rock core of the fracture-type reservoirs such as rock salt reservoir, shale reservoir is research object, to rock core under the conditions of oily (gas) water two-phase, by
The imbibition action intensity produced in capillary force and gravity carries out accurate measurement and evaluates, to be acted on for fracture-type reservoir imbibition
Evaluation and Predicting The Recovery Efficiency experiment measurement and analogue means effectively, accurate, easy are provided.The rotatable imbibition experiment dress
Putting 100 has a mounting seat 10, and mounting seat 10 is cylindric, and used as the agent structure of the experimental provision, mounting seat 10 is used for
Container and motor are installed.The experimental provision is to place vertically in experiment, and the upper end of mounting seat 10 is sealed and installed with a glass
Glass container, the container can also be made of other transparent materials.Liquid 8 and rock sample to be measured 1 are loaded with the glass container,
Liquid 8 generally uses water, rock sample to be measured 1 to be contained within oil.The rock sample to be measured 1 is immersed in the liquid 8 and by a rock sample
Clamper 2 is clamped；The top of the container has transparent measurement pipe 31, and the measurement pipe 31 is provided with scale.The glass
Container can be using the glass infuser 30 of ladder circle cylindricality, and the bottom of the glass infuser 30 is enlarged diameter section 32, the glass infuser 30
Top be elongated tubular, the elongate tubular is into the measurement pipe 31.In the present embodiment, the overall length of glass infuser 30 is 500mm, carefully
The length of long tube is 191mm, and the internal diameter of elongated tubular is Φ 10mm, and useful range is 15ml；The internal diameter of enlarged diameter section 32 is Φ
87mm.The top of elongated tubular is provided with switch valve 4, and switch valve 4 can use glass valve, after glass valve is opened, elongated tubular
Top and atmosphere, after glass valve is closed, the closed upper part of elongated tubular.The upper outside of mounting seat 10 is provided with radially
Outwardly directed annular flange 101, the upper end of the mounting seat 10 is extend into inside the lower end of glass infuser 30, the glass infuser 30
Lower end port be resisted against in the annular flange 101.Between the inwall of the upper end of the mounting seat 10 and the glass infuser 30
It is tightly connected using sealing ring.By the sealing of annular between the lower end port of the glass infuser 30 and the annular flange 101
The sealing of clip 5 is connected together.Sealing clamp 5 is made of elaxtic seal, for example silica gel, is enclosed within the He of annular flange 101
The outside of the lower end port junction of glass infuser 30, the lower end port of glass infuser 30 is pressed in annular flange 101, and formed
Sealing, prevents the liquid 8 in glass infuser 30 from spilling.The mounting seat 10 be provided with connect with the inside of the glass infuser 30 enter to arrange
Liquid mouthfuls 102, for the liquid 8 injected in glass infuser 30 in liquid 8 or discharge glass infuser 30, as shown in Fig. 2 in experiment,
It is described enter leakage fluid dram 102 pump 7 is connected by pipeline, the pipeline is provided with switch valve 6, liquid 8 is injected into glass by pump 7
In cylinder 30, by the break-make of the control piper of switch valve 6 on pipeline.After experiment terminates, the liquid 8 in glass infuser 30 is emptied,
Generally with plug by it is described enter leakage fluid dram 102 block.In experimentation, the feed liquor and discharge opeing in glass infuser 30 are outer by pipeline connection
Portion's pressure apparatus, such as constant-flux pump 7, are adjusted by the controlled valve 6 set on pipeline.The switch of constant-flux pump 7 can be to glass
The injection and discharge of liquid 8 are carried out in glass cylinder 30.Especially, for air inlet in experimentation to the measurement pipe of the upper end of glass infuser 30
The influence of 31 readings, can make the upper end of measurement pipe 31 with big gas phase by opening the glass valve 4 in measurement pipe 31 (elongated tubular)
Logical, then using external pressure apparatus (constant-flux pump 7) to further injecting into fluid in glass infuser 30, the air that will enter is from survey
The top of buret 31 is exhausted, and excludes the influence of gas.
Rotating driving device is also equipped with the mounting seat 10, rotating driving device is connected with the rock sample clamper 2,
Drive the rock sample clamper 2 rotation in the liquid 8.Specifically, rotating driving device includes motor 9, rotation dish 11
With rotary shaft 12.The rotating speed of motor 9 can be according to the viscosity difference for testing the tested rock sample property difference and oil that used
It is adjusted, motor 9 is provided with ten grades of different rotating speeds in the present embodiment.The lower end of the mounting seat 10 is fixedly connected one
Frame 13, the motor 9 is fixedly connected on the support 13.The two ends of support 13 are ring flange, and the ring flange of upper end is used
It is bolted on the lower surface of mounting seat 10, motor 9 is bolted on the lower end ring flange of support 13.The installation
The axial passage of up/down perforation is provided with seat 10, the output shaft of motor 9 connects the rotary shaft 12, and rotary shaft 12 is described in
Axial passage is extend into the glass infuser 30, and one end that the rotary shaft 12 is extend into glass infuser 30 is fixedly connected described turning
Moving plate 11.Sealed using sealing device 14 between the rotary shaft 12 and the mounting seat 10, prevented in glass infuser 30
Liquid 8 spills from axial passage.The top and bottom of axial passage are respectively equipped with rolling bearing 15, and rotary shaft 12 passes through the axis of rolling
Hold 15 to be rotatably connected in axial passage, the rotation of motor 9 is passed to the rotation dish 11 in glass infuser 30.Support 13 it is upper
End flanges disk plays a part of bearing cap simultaneously, by the bearing axial restraint of lower end.Spiral shell is used on the upper surface of mounting seat 10
Tether and be connected to upper ball cover 16, by the bearing axial restraint of upper end.Rock sample clamper 2 is installed in the rotation dish 11, is used for
Clamp rock sample to be measured 1, drive rock sample 1 to be measured to be changed the line of production raw centrifugal force in the inward turning of liquid 8 together, will be adsorbed by the effect of centrifugal force
Oil on the surface of rock sample to be measured 1 departs from the surface of rock sample 1 to be measured.The rock sample clamper 2 can be using at least three along described turn
The equally distributed supporting rod of circumferencial direction of Moving plate 11, the supporting rod is protruding perpendicular to the card of the rotation dish 11,
One end of the supporting rod can be connected in the rotation dish 11 with radially sliding along the rotation dish 11.The rotation dish 11
Sliding groove corresponding with the supporting rod quantity is provided with, the sliding groove to form radiation along radially extending for the rotation dish 11
Shape.One end of the supporting rod is slidably connected in the sliding groove, and each supporting rod adjusts clamping by radially sliding
Size, can adapt to various sizes of rock sample to be measured 1.The generally rectangular body of rock sample to be measured 1, using four clampings in the present embodiment
Bar, clamps four sides of rock sample to be measured 1 respectively；Rotation dish 11 is provided with the sliding groove of right-angled intersection, this experimental provision energy
The maximum size of rock sample to be measured 1 of enough clampings is the cuboid of 50mm × 50mm × 150mm.Four supporting rods to be adjusted away from
After rock sample to be measured 1 is clamped, supporting rod can be fixed on to be kept steady with retaining clip in corresponding sliding groove to be determined.Due to rock to be measured
The upper surface and lower surface of sample 1 are not blocked, and the lower end of rock sample to be measured 1 also preferably contacts with the liquid 8 in glass infuser 30,
The imbibition process of complete rock core can more really be reflected, so the rock sample clamper 2 can solve existing imbibition instrument in clamping rock
There is a problem of the lower end effect of blocking during the heart and cause measurement error.
Wherein various sizes of rock core, under identical rotating speed, the centrifugal force of rock core periphery is different, therefore in crude oil adhesion
, it is necessary to adjust the corresponding rotating speed of motor 9 when power is identical.The selected rotary speed of motor 9 is related to centrifugal force, i.e., in order to
Overcome the crude oil that imbibition goes out in the adhesion of core surface, it is necessary to certain power is centrifuged out realizing effectively metering.It is right
In different crude oil, its adhesion is different.The size of centrifugal force (F) depends on the angular speed (ω, r/min) of centrifugal head
With the distance (r, mm) of material grainses and centrifugal shaft, in order to effectively be centrifuged out the crude oil (gas) of core outside surface adhesion, accordingly
, can set different rotating speeds for the crude oil of various sizes of rock core and different viscosities and set；Therefore in the present embodiment, it is electronic
Adjustment of rotational speed switch is set on machine 9, ten grades of rotating speeds can be adjusted out, to adapt to various sizes of rock sample to be measured 1.
In measurement process, rock core (rock sample 1 to be measured) is fixed with rock sample clamper 2, when there is imbibition effect in rock core, rock
Interior portion crude oil is discharged under the effect such as capillary force and gravity from rock core inside, and part oil droplet sticks to core surface, it is impossible to
Metering, because imbibition oil drain quantity is considerably less in itself, sticking to the unmeasurable crude oil in surface will bring very big error.Such as
Shown in Fig. 3, this experimental provision adjusts appropriate rotary speed by motor 9, makes to stick to rock core under the influence of centrifugal force
The oil droplet 17 on surface departs from core surface, and is floated under gravitational differentiation in the measurement pipe 31 on the top of glass infuser 30,
Be gathered into measurement pipe 31 oil 18, so as to greatly improve the precision of imbibition oil extraction volume metering, overcome original imbibition instrument due to
Have ignored part surface adhesion crude oil and rock core lower end is blocked the measurement error for causing, and by entering setting for leakage fluid dram 102
Meter, realizes the liquid measure regulation in glass infuser 30, overcomes the measurement error that air inlet in experimentation is caused.Gravitational differentiation, and
Claim density point different, refer to the different material of the original several density for mixing, density variation is gradually pressed under gravity
Separate phenomenon.The advantage of the experimental provision is original surface adhesion to be eliminated in measuring principle and technology and is blocked
The error in dipping that effect is caused, can realize easily processing rapidly to the error such as air inlet in experiment, drastically increase and ooze
Measuring instrument precision is inhaled, and it is easy to operate, it is easy to repeat and batch operation, for the fracture-type reservoir of high porosity high permeability
Rock sample and the less fine and close rock sample of pore scale are respectively provided with good applicability, are to study hyposmosis, compact reservoir from now on and split
The reservoir static state imbibition development effectiveness research of seam property is supported there is provided effective experimental technique.
Schematical specific embodiment of the invention is the foregoing is only, the scope of the present invention is not limited to.Specifically
All combinations of illustrated feature are not necessarily the solution that the present invention is limited in implementation method, it is possible to understand that these are added
Structural feature and operations improvement can be used alone or be combined with each other.It will therefore be appreciated that the invention is not restricted to
The combination of any specific feature or element, and any desired combinations of features described here can be carried out without departing from
Protection scope of the present invention, any those skilled in the art is made on the premise of design of the invention and principle is not departed from
The equivalent variations for going out and modification, all should belong to the scope of protection of the invention.
Claims (10)
1. a kind of rotatable imbibition experimental provision, it is characterised in that the rotatable imbibition experimental provision includes：
Mounting seat；
Container, it is sealingly mounted at the mounting seat upper end；Liquid and rock sample to be measured, the rock to be measured are loaded with the container
Sample is immersed in the liquid and by a rock sample gripper；The top of the container has transparent measurement pipe, described
Measurement pipe is provided with scale；And
Rotating driving device, it is arranged in the mounting seat, and is connected with the rock sample clamper, drives the rock sample clamping
Device rotates in the liquid.
2. rotatable imbibition experimental provision as claimed in claim 1, it is characterised in that the container is the glass of ladder circle cylindricality
Glass cylinder, the bottom of the glass infuser is enlarged diameter section, and the top of the glass infuser is elongated tubular, and the elongate tubular is into the survey
Buret.
3. rotatable imbibition experimental provision as claimed in claim 1, it is characterised in that the rotating driving device includes：
Motor, its lower end for being arranged on the mounting seat, the rotating speed of the motor can be adjusted；And
Rotation dish, it is located in the container, installs the rock sample clamper in the rotation dish, the motor with described turn
Moving plate is connected, and drives the rotation disc spins.
4. rotatable imbibition experimental provision as claimed in claim 3, it is characterised in that be provided with axially logical in the mounting seat
Road；The motor connects a rotary shaft, and the rotary shaft is extend into the container through the axial passage, the rotation
Axle is fixedly connected the rotation dish；Sealed by sealing device between the rotary shaft and the mounting seat.
5. rotatable imbibition experimental provision as claimed in claim 4, it is characterised in that the lower end of the mounting seat is fixedly connected
One support, the motor is fixedly connected on the bracket；The rotary shaft is rotatably connected on the axial direction and leads to by bearing
In road.
6. rotatable imbibition experimental provision as claimed in claim 1, it is characterised in that the mounting seat is provided with and the appearance
Leakage fluid dram is entered in the connection of device inside, it is described enter leakage fluid dram by pipeline connection pump, the pipeline is provided with switch valve.
7. rotatable imbibition experimental provision as claimed in claim 1, it is characterised in that the top of the measurement pipe is provided with switch
Valve.
8. rotatable imbibition experimental provision as claimed in claim 3, it is characterised in that the rock sample clamper includes at least three
Root along the rotation dish the equally distributed supporting rod of circumferencial direction, the supporting rod is outside perpendicular to the card of the rotation dish
Stretch out, one end of the supporting rod can be connected in the rotation dish with radially sliding along the rotation dish.
9. rotatable imbibition experimental provision as claimed in claim 8, it is characterised in that the rotation dish is provided with and the folder
The corresponding sliding groove of bar quantity is held, the sliding groove to form radial along radially extending for the rotation dish；The supporting rod
One end can be slidably connected in the sliding groove.
10. rotatable imbibition experimental provision as claimed in claim 1, it is characterised in that the upper outside of the mounting seat sets
The upper end for having the annular flange for extending radially out, the mounting seat is extend into the container, the port of the container against
In the annular flange；It is tightly connected using sealing ring between the upper end of the mounting seat and the container；The container
Sealed by the sealing clamp of annular between port and the annular flange and be connected together.
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| CN201611073623.7A CN106769752A (en) | 2016-11-29 | 2016-11-29 | Rotatable imbibition experimental provision |
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Family
ID=58900517
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| CN107144515A (en) * | 2017-07-05 | 2017-09-08 | 西安石油大学 | Imbibition experimental provision and its method |
| CN107727554A (en) * | 2017-10-31 | 2018-02-23 | 中国石油大学(北京) | Strengthen the imbibition system of carbonization water under high-temperature and high-pressure conditions |
| CN109100280A (en) * | 2018-09-04 | 2018-12-28 | 东华理工大学 | A kind of multi-functional soil nature test macro |
| CN109374490A (en) * | 2018-08-27 | 2019-02-22 | 中国石油大学(北京) | Imbibition extraction equipment and imbibition extraction experiments method |
| CN112611686A (en) * | 2021-01-11 | 2021-04-06 | 东北石油大学 | Dynamic imbibition experimental device and experimental method thereof |
| CN113155681A (en) * | 2021-05-13 | 2021-07-23 | 西安石油大学 | Device for simulating action of seepage force on rock by using centrifugal force and experimental method |
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| CN113155681A (en) * | 2021-05-13 | 2021-07-23 | 西安石油大学 | Device for simulating action of seepage force on rock by using centrifugal force and experimental method |
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