CN110374565A - A kind of device and its experimental method that partial pressure and sub-prime injection can be achieved at the same time - Google Patents
A kind of device and its experimental method that partial pressure and sub-prime injection can be achieved at the same time Download PDFInfo
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- CN110374565A CN110374565A CN201910678438.8A CN201910678438A CN110374565A CN 110374565 A CN110374565 A CN 110374565A CN 201910678438 A CN201910678438 A CN 201910678438A CN 110374565 A CN110374565 A CN 110374565A
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- 238000002347 injection Methods 0.000 title claims abstract description 49
- 239000007924 injection Substances 0.000 title claims abstract description 49
- 238000002474 experimental method Methods 0.000 title claims abstract description 12
- 241000883990 Flabellum Species 0.000 claims abstract description 126
- 229920000642 polymer Polymers 0.000 claims abstract description 53
- 239000000243 solution Substances 0.000 claims description 56
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 3
- 241001075561 Fioria Species 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 13
- 230000008859 change Effects 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000005086 pumping Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009533 lab test Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000011206 ternary composite Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
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- Biochemistry (AREA)
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- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
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- Injection Moulding Of Plastics Or The Like (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of devices and its experimental method that partial pressure and sub-prime injection can be achieved at the same time, the device that partial pressure and sub-prime injection wherein can be achieved at the same time includes outer cylinder, casing, multiple groups flabellum, shaft, pressure sensor, speed display, digital display viscosimeter, DSP control module, outer cylinder, casing, shaft coaxial setting with one heart, multiple groups flabellum is successively equidistantly mounted in shaft by corresponding supporting support, every group of flabellum is made of three flabellums and the rotation connection of flabellum fixing sleeve, three flabellums are evenly distributed on around flabellum fixing sleeve, flabellum fixing sleeve, two equal nestings of bracket fixing sleeve are fixed in shaft, every group of flabellum is connect with two supporting supports, flabellum fixing sleeve is located between two bracket fixing sleeves, the side of each flabellum be rotatablely connected one described in telescopic rod.The present invention is capable of the range of real-time continual adjusting injection pressure and polymer molecular weight, and can be achieved at the same time the function of partial pressure and sub-prime.
Description
Technical field:
The present invention relates to a kind of indoor experimental apparatus used in simulation oil field layering injection process, and in particular to
Be it is a kind of can be achieved at the same time partial pressure and sub-prime injection device and its experimental method.
Background technique:
As the major oil reservoir displacement of current oil field at home terminates, displacement object is increasingly turned to those low-permeabilities, interlayer
The oil reservoir to differ greatly, in conjunction with practical condition, the injection pressure of these oil reservoirs is generally all higher.Due to polymeric system or
Person's three-component compound system and certain oil reservoir matchings are poor, and it is good that the solution of injection has all flowed to high permeability, connectivity substantially
Oil reservoir.Above-mentioned contradiction is not can solve, therefore by original zonal injection technology in order to further improve ternary composite driving
Whole development effect, improve interlayer contradiction, propose three-component compound system single string multi separate mass and separate pressure injection technique.I.e. in list
In the case of pipe list pump injection high molecular weight three-component compound system, use pressure regulator that tri compound solution is existed high permeability formation
Degradation rate can inject when lower；Sub-prime tool is used to low-permeability layer, is reduced in three-component compound system and is polymerize using mechanical shearing
The molecular weight of object, so that tri compound solution be enable to be injected into corresponding low-permeability layer, here it is three-component compound system single tubes
Multilayer separate mass and separate pressure injection technology.
Displacement mode about simulation oil field layering injection at present, the device that laboratory experiment uses is becomes in displacement process
It changes the bleeder mechanism of Different structural parameters and changes the molecular-weight adjusting device of different parameters to realize.Traditional laboratory experiment point
Layer injection device adjusts pressure and molecular weight ranges are limited, and dividing with sub-prime function is to separate, and not can be implemented simultaneously partial pressure
With the function of sub-prime.During the experiment, it needs to carry out termination of pumping operation, convert the bleeder mechanism of Different structural parameters and changes not
The molecular-weight adjusting device of same parameter achievees the purpose that divide sub-prime.Since experiment container space occupied range is big, device connection
Route is cumbersome, and experimental arrangement is complicated, and termination of pumping transformation causes container pressure to decline, and when connecting new container, pipeline needs to arrange again
Sky causes the regular hour to waste, and generation system error, experimental result accuracy declines to a great extent, in short, carrying out indoor simulation point
When layer injection experiments, lacking a kind of under the premise of not termination of pumping while can realize the device that polymer partial pressure and sub-prime are injected.
Summary of the invention:
It is an object of the present invention to provide a kind of device that partial pressure and sub-prime injection can be achieved at the same time, it is this can be real simultaneously
Now partial pressure and the device of sub-prime injection are used to solve traditional indoor layering injection experiments needs by bleeder mechanism and sub-prime device
It is common to complete, the problem of experimentation needs termination of pumping switching device, it is a further object to provide it is this can be real simultaneously
Now divide the experimental method with the device of sub-prime injection.
The technical solution adopted by the present invention to solve the technical problems is: this that partial pressure and sub-prime injection can be achieved at the same time
Device includes outer cylinder, casing, multiple groups flabellum, shaft, pressure sensor, speed display, digital display viscosimeter, DSP control module,
The coaxial setting with one heart of outer cylinder, casing, shaft, multiple groups flabellum are successively equidistantly mounted in shaft by corresponding supporting support,
Every group of flabellum is made of three flabellums and the rotation connection of flabellum fixing sleeve, and three flabellums are evenly distributed on around flabellum fixing sleeve,
Each supporting support is made of bracket fixing sleeve and three telescopic rods being rotatablely connected with it, flabellum fixing sleeve, two brackets
The equal nesting of fixing sleeve is fixed in shaft, and every group of flabellum is connect with two supporting supports, and it is solid that flabellum fixing sleeve is located at two brackets
Between fixed set, the side of each flabellum be rotatablely connected one described in telescopic rod, multiple groups flabellum sets close to outer cylinder outlet end
It sets, casing is from outer cylinder outlet end sleeve outside multiple groups flabellum；Outer cylinder outlet end is equipped with pressure sensor and digital display viscosimeter, pressure
Sensor and digital display viscosimeter are connect by transmission line with tablet, and micro process converter is arranged on tablet and receives transmitting
Device, tablet are connected with DSP control module below.
Flabellum has five groups in above scheme.
Shaft is connected with motor in above scheme, and numerical value of the motor by governor according to speed display is turned
The adjusting of speed.
Scalable quarter butt is slidably connected by three section retracting cylinders and is constituted in above scheme, and respectively first segment is flexible from top to bottom
Cylinder, the second section retracting cylinder, third section retracting cylinder, spring are set in third section retracting cylinder, and first segment retracting cylinder has evagination
The barrel of ball, the second section retracting cylinder is fluted.
The experimental method of the above-mentioned device that partial pressure and sub-prime injection can be achieved at the same time:
Step 1: before injection solution, needed for being determined according to the chock pressure difference of expected outer cylinder outlet end and outer cylinder arrival end
The group number for the flabellum to be unfolded, and it is respectively positioned on all groups of flabellums in casing；
Step 2: solution is injected into outer cylinder；
Step 3: changing flabellum group number in casing, and control becomes the flabellum group of unfolded state in the flabellum of closed state
Number gradually increases, and when the flabellum group number in unfolded state changes, the solution of injection passes through where unfolded state flabellum
The area of passage in section changes, and the flabellum group number in unfolded state is more, outer cylinder outlet end and outer cylinder arrival end
Chock pressure difference is bigger；
Step 4: the revolving speed of the flabellum of expansion is determined according to the molecular weight for the polymer finally to be obtained；
Step 5: being adjusted motor by governor, adjusts the speed of shaft rotation, and the range of speeds is 0-
2000rpm, until the revolving speed shown on speed display is consistent with expection；When the flabellum revolving speed in unfolded state becomes
When change, by being acted on when section by mechanical shearing where unfolded state flabellum, the molecular weight of polymer occurs the solution of injection
Change, and the flabellum group number in unfolded state is more, revolving speed is faster, the polymer molecular weight finally flowed out from outer cylinder outlet end
It is smaller；
Step 6: the relationship between polymer solution intrinsic viscosity and polymer solution viscosity is established；
Intrinsic viscosity value [η] its be defined as viscosity numberOr logarithm viscosity numberExtrapolated value in infinite dilution,Polymer solution intrinsic viscosity is calculated to obtain using " one point method ", measurement increases ratio under a concentration
Viscosities ilsp, directly calculate intrinsic viscosity value；" one point method " seeks the equation of [η]:C is poly-
The concentration of polymer solution；Wherein ηrFor viscosity ratio, η0For the viscosity of pure solvent, η is same
At a temperature of polymer solution viscosity；
Step 7: establishing the relationship of polymer molecular weight Yu polymer solution intrinsic viscosity, finally in real time on computers
Show the size of polymer molecular weight.
The invention has the following advantages:
1, the present invention, can be uninterrupted in real time compared with traditional laboratory experiment layering injection bleeder mechanism and sub-prime device
Adjusting injection pressure and polymer molecular weight range, and can be achieved at the same time the function of partial pressure and sub-prime.It was testing
Cheng Zhong does not need to carry out termination of pumping operation, so that it may by changing the unfolded state of different groups of number flabellum blades and adjusting motor
Different rotating speeds change the molecular weight of polymer in solution to adjust the pressure of outlet end outflow solution, reach partial pressure sub-prime
Purpose.The plenty of time required for replacement Different structural parameters partial pressure tool is saved, partial pressure tool and sub-prime tool are avoided
Great amount of cost required for handling respectively, reduces systematic error, improves the accuracy of experimental result.
2. the real-time measurement of layering injection parameter may be implemented in the present invention, it is embodied in and solution at outlet end may be implemented
The real-time measurement of pressure and polymer molecular weight:
(1) real-time measurement to solution pressure at outlet end may be implemented in the present invention.Traditional dispenser is merely able to drop
The pressure of low solution, but the specific value of the pressure without measurement solution in a device, the invention is then by the outer of outlet end
The pressure sensor installed at tube inner surface, transmits pressure information, realizes the real-time measurement of pressure data.
(2) present invention may be implemented at outlet end in solution polymer molecular weight real-time measurement.Pass through digital display viscosity
The viscosity number of meter measurement solution, has the features such as measurement sensitivity is high, reliable test result.By establishing polymer solution characteristic
Relationship between viscosity number and polymer solution viscosity and the relationship for establishing polymer molecular weight Yu polymer solution intrinsic viscosity, can
Go out to pass through the molecular weight of sub-prime process post-consumer polymer with real-time measurement.
3. of the invention is easy to operate, controllability is strong, high degree of automation, can acquire in real time to information progress and anti-
Feedback, strong innovation can be to flowing through solution therein while realizing the function of partial pressure and sub-prime.
Four, Detailed description of the invention:
Fig. 1 is schematic structural view of the invention；
Fig. 2 is three-dimensional structure schematic diagram when flabellum blade is fully deployed in the present invention；
Fig. 3 is three-dimensional structure schematic diagram when flabellum blade is closed completely in the present invention；
Fig. 4 is the entry end struc-ture schematic diagram of solution currency structure in the present invention；
Fig. 5 is the flexible quarter butt schematic diagram of three sections of supporting support in the present invention；
Fig. 6 is that the three sections quarter butt that stretches of supporting support in the present invention is connected the three-dimensional structure schematic diagram of part with fixing sleeve；
Fig. 7 be supporting support structure in the present invention three sections stretch quarter butt be connected with flabellum part three-dimensional structure it is simple
Figure；
Fig. 8 is pressure sensor operation schematic diagram of the invention；
Fig. 9 is pressure measurement and molecular weight measurement work flow diagram of the invention.
In figure: 1 outer cylinder；2 casings；3 flabellums；4 shafts；5 supporting supports；6 pressure sensors；7 speed displays；8 is electronic
Machine；9 governors；10 digital display viscosimeters；11DSP control module；12 tablets；13 transmission lines；14 bracket fixing sleeves；15 first segments
Retracting cylinder；16 second section retracting cylinders；17 third section retracting cylinders；18 springs.
Specific embodiment:
Following further describes the present invention with reference to the drawings:
This device that partial pressure and sub-prime injection can be achieved at the same time, fills in traditional partial pressure implantation tool and molecular-weight adjusting
On the basis of setting function, the function of the two is combined.This novel partial pressure and sub-prime indoor experimental apparatus being capable of bases
Actual demand changes corresponding mechanical structure, can realize polymer partial pressure and sub-prime injection simultaneously under the premise of not termination of pumping,
Meet different injection pressure conditions and different molecular weight situation demand.
In conjunction with shown in Fig. 1-Fig. 9, this partial pressure and the device of sub-prime injection of can be achieved at the same time includes outer cylinder 1, casing 2, five
Group flabellum 3, shaft 4, pressure sensor 6, speed display 7, digital display viscosimeter 10, DSP control module 11, outer cylinder 1, casing 2,
The coaxial setting with one heart of shaft 4, multiple groups flabellum 3 is successively equidistantly mounted in shaft 4 by corresponding supporting support 5, shaft 4 and
Motor 8 is connected, and motor 8 carries out the adjusting of revolving speed by governor 9 according to the numerical value of speed display 7.Every group of flabellum 3 by
Three flabellums and the rotation connection of flabellum fixing sleeve are constituted, and three flabellums 3 are evenly distributed on around flabellum fixing sleeve, and flabellum is fixed
Set, two equal nestings of bracket fixing sleeve 14 are fixed in shaft 4, and every group of flabellum 3 is connect with two supporting supports 5, and flabellum is fixed
Set is located between two bracket fixing sleeves 14, the side of each flabellum be rotatablely connected one described in telescopic rod, five groups of fans
Leaf 3 goes out 1 mouthful of end close to outer cylinder and is arranged, and from 1 outlet end sleeve of outer cylinder outside five groups of flabellums 3,1 arrival end of outer cylinder is provided with casing 2
With porose access panel；1 outlet end of outer cylinder is equipped with pressure sensor 6 and digital display viscosimeter 10, pressure sensor 6 and digital display viscosity
Meter 10 is connect by transmission line 13 with tablet 12, and micro process converter is arranged on tablet 12 and receives transmitter, tablet
12 are connected with DSP control module 11 below, and when solution is flowed out from 1 outlet end of outer cylinder, pressure sensor 6 is solution stream
Dynamic pressure signal is transferred on tablet 12, and is summarized in the enterprising row information of DSP control module 11, is then controlled by DSP
Signal projector in module 11, which is transported to electronic signal in computer terminal, obtains relevant pressure information, can monitor note in real time
The pressure and viscosity entered, pressure sensor 6 are set to 1 inner wall of outer cylinder.
The rotor that digital display viscosimeter 10 is placed at 1 outlet end of outer cylinder, when rotor rotates in the liquid that outlet end is flowed out
When, liquid can generate the viscosity torque acted on rotor, and the viscosity of liquid is bigger, and the viscosity torque is bigger；Conversely, liquid
Viscosity is smaller, and the viscosity torque is also smaller.By micro-computer technology, this acts on the sticky torque on rotor by digital display viscosimeter
Sensor inside 10 detected, and carry out digital processing to the data that sensor detects through computer, can be on a display screen
Clearly show that the contents such as the viscosity number of fluid to be measured.Point of polymer can be obtained further according to viscosity and the relational expression of molecular weight
Son amount.
The operating procedure of digital display viscosimeter work:
Step 1: the rotor of selection is screwed in into connecting screw.
Step 2: opening digital display viscosimeter 10 and switch, and rotor number is selected in input, is selected revolving speed, is pressed TAB key for flashing digit
It is respectively set.
Step 3: turn crane knob declines viscosimeter slowly, and rotor is gradually immersed into fluid to be measured, until liquid
Face is just at the level indicia of rotor.
Step 4: measurement key is pressed, the viscosity number of the solution under current rotor, revolving speed can be measured after appropriate time.
Refering to Fig. 2-Fig. 7, each supporting support 5 can by bracket fixing sleeve 14 and be rotatablely connected with it three in the present invention
Telescopic rod is constituted, and every scalable quarter butt is slidably connected by three section retracting cylinders and is constituted, and spring 18 is set in retracting cylinder, fixing sleeve
Nesting is fixed in shaft 4, and one end of three scalable quarter butts of three sections is concentrated to be connected with fixing sleeve, the other end respectively connection respectively
A piece of flabellum, every group of flabellum 3 are connected with two supporting supports 5, i.e. every flabellum is scalable each side with three sections
Quarter butt is connected.When a certain group of flabellum 3 is fully deployed, the length of the scalable quarter butt of three sections of the three pieces flabellum two sides of the group at this time
Degree is two sections, is in equilibrium state；When a certain group of flabellum 3 is in undeployed configuration, the three pieces flabellum two sides of the group
The length side of the scalable quarter butt of three sections at this time is three sections, and the other side is a section, wherein the scalable quarter butt in flabellum lodging direction
Length be a section, be in compressive state, the length of the scalable quarter butt of the other side is three sections, is in tensional state, does not exist
Equilibrium state.Angle degree between every two quarter butts of the same side is identical, when the blade of each group flabellum 3 is fully deployed,
Direction is flowed through along fluid in fixed flabellum blade between each group and each group to be consistent.Outer cylinder 1, casing 2 and shaft 4 are total with one heart
Axis installation.
Scalable quarter butt is slidably connected by three section retracting cylinders and is constituted, from top to bottom respectively first segment retracting cylinder 15, second
Retracting cylinder 16, third section retracting cylinder 17 are saved, spring 18 is set in third section retracting cylinder 17, and first segment retracting cylinder 15 has evagination
Ball, the barrel of the second section retracting cylinder 16 is fluted.
The quantity of every group of flabellum 3 is three, is considered for amechanical angle, the triangular structure stability that three pieces flabellum is constituted
By force, electric power and energy can be saved, while reducing cost of manufacture.The material of flabellum 3 uses aluminum blade, made of this kind of material
Flabellum quality is harder, and toughness is high, and shear effect is good, in addition, aluminum blade is unlikely to deform, the performance of resist fluids impact is strong, compares
It is durable.
Every group of flabellum 3 is connected with two supporting supports 5, and in the initial state, casing 2 is nested in whole 5 groups of flabellums
Around, 2 inner wall of casing is mutually attached with flabellum edge, and flabellum is in undeployed state, can lead under the action of 2 pressure of casing
Be overlapped degree of the adjusting sleeve pipe 2 with 5 groups of flabellums fixed in shaft 4 is crossed, control each group flabellum 3 is in closed state or place
In unfolded state, change area of passage of the solution of injection by 3 place section of each group flabellum when, to change the solution of injection
Pressure.In addition, the rotation of 3 blade of each group flabellum in shaft 4 can be driven by opening motor 8, and adjusted by governor 9
The revolving speed of flabellum 3 carries out mechanical shearing to the polymer solution for flowing through 3 place section of each group flabellum, to change injection solution
The molecular weight of middle polymer.
When a certain group of flabellum 3 is fully deployed, the length of the scalable quarter butt of three sections of the three pieces flabellum two sides of the group is equal
For two sections, at this point, stretching in quarter butt structure in three sections, the first segment of flexible quarter butt enters the inside of the second section, and first segment is convex
The ball for playing part is stuck in the groove of the second section, and flabellum 3 is stretched quarter butt power equal in magnitude, contrary by the left and right sides
Effect, flabellum 3 is in equilibrium state, and flabellum is in fully unfolded position at this time；When a certain group of flabellum 3 is in closed state
When, the length side of the scalable quarter butt of three sections of the three pieces flabellum two sides of the group at this time is three sections, and the other side is a section, wherein
The length of the scalable quarter butt of the glide direction of flabellum lodging direction, that is, casing 2 is a section, at this point, in the flexible quarter butt structure of three sections
In, the first segment and the second section of flexible quarter butt enter the inside of third section, the bullet of the bottom squeeze third section bottom of the second section
Spring 18, flexible quarter butt are in compressive state, and the length of the scalable quarter butt of the other side is three sections, at this point, in the flexible quarter butt of three sections
In structure, the part that first segment, the second section and third section are not overlapped is in straight configuration, and flabellum is stretched by the left and right sides
Shorten the unequal power of bar size, flabellum is not in equilibrium state.Therefore, when sliding sleeve connects 2 inner wall of casing not with flabellum
When touching, flabellum 3 has the trend developed from trend fully unfolded position.
Refering to Fig. 9, the experimental method of this device that partial pressure and sub-prime injection can be achieved at the same time:
Step 1: before injection solution, institute is determined according to the chock pressure difference of expected 1 outlet end of outer cylinder and 1 arrival end of outer cylinder
The group number for the flabellum for needing to be unfolded, and it is respectively positioned on all groups of flabellums in casing 2；
Step 2: solution is injected into outer cylinder 1；
Step 3: changing flabellum group number in casing 2, and control becomes the flabellum group of unfolded state in the flabellum of closed state
Number gradually increases, and when the flabellum group number in unfolded state changes, the solution of injection passes through where unfolded state flabellum
The area of passage in section changes, and the flabellum group number in unfolded state is more, 1 outlet end of outer cylinder and 1 arrival end of outer cylinder
Chock pressure difference it is bigger；
Step 4: the revolving speed of the flabellum of expansion is determined according to the molecular weight for the polymer finally to be obtained；
Step 5: being adjusted motor 8 by governor 9, adjusts the speed that shaft 4 rotates, and the range of speeds is 0-
2000rpm, until the revolving speed shown on speed display 7 is consistent with expection；When the flabellum revolving speed in unfolded state occurs
When variation, the solution of injection when section where unfolded state flabellum by mechanical shearing by being acted on, the molecular weight hair of polymer
It is raw to change, and the flabellum group number for being in unfolded state is more, revolving speed is faster, the polymer point finally flowed out from 1 outlet end of outer cylinder
Son amount is smaller；
Step 6: the relationship between polymer solution intrinsic viscosity and polymer solution viscosity is established；
Intrinsic viscosity value [η] its be defined as viscosity numberOr logarithm viscosity numberExtrapolated value in infinite dilution,Polymer solution intrinsic viscosity is calculated to obtain using " one point method ", measurement increases ratio under a concentration
Viscosities ilsp, directly calculate intrinsic viscosity value；" one point method " seeks the equation of [η]:C is poly-
The concentration of polymer solution；Wherein ηrFor viscosity ratio, η0For the viscosity of pure solvent, η is same
At a temperature of polymer solution viscosity；
Step 7: establishing the relationship of polymer molecular weight Yu polymer solution intrinsic viscosity, finally in real time on computers
Show the size of polymer molecular weight.
It is previous a large amount of it is demonstrated experimentally that for give polymer given solvent and at a temperature of, the number of intrinsic viscosity
Value only by give polymer molecular weight determined, the viscosity average molecular weigh M of [η] and polymerηRelationship can be by Mark-
Houwink equation indicates:Wherein α is broadening factor, related with the form of polymer molecular chain in solution；K is
Proportionality constant.
The present invention can be realized the double control to solution injection pressure and polymer molecular weight, can guarantee not reduce
The oil displacement efficiency of high permeability formation, and make the polymer build-up in low-permeability layer hole, so that block whole development effect obtains
To promotion.
Claims (5)
1. a kind of device that partial pressure and sub-prime injection can be achieved at the same time, it is characterised in that: this that partial pressure and sub-prime can be achieved at the same time
The device of injection includes outer cylinder (1), casing (2), multiple groups flabellum (3), shaft (4), pressure sensor (6), speed display
(7), digital display viscosimeter (10), DSP control module (11), the coaxial setting with one heart of outer cylinder (1), casing (2), shaft (4), multiple groups fan
Leaf (3) is successively equidistantly mounted on shaft (4) by corresponding supporting support (5), and every group of flabellum (3) is by three flabellums and fan
The rotation connection of leaf fixing sleeve is constituted, and three flabellums are evenly distributed on around flabellum fixing sleeve, and each supporting support (5) is consolidated by bracket
Fixed set (14) and three telescopic rods being rotatablely connected with it are constituted, and flabellum fixing sleeve, two bracket fixing sleeves (14) are nested
It is fixed on shaft (4), every group of flabellum is connect with two supporting supports (5), and flabellum fixing sleeve is located at two bracket fixing sleeves
(14) between, the side of each flabellum be rotatablely connected one described in telescopic rod, multiple groups flabellum (3) close to outer cylinder (1) go out
The setting of mouth end, casing (2) is from outer cylinder (1) outlet end sleeve outside multiple groups flabellum；Outer cylinder (1) outlet end is equipped with pressure sensor
(6) connected with digital display viscosimeter (10), pressure sensor (6) and digital display viscosimeter (10) by transmission line (13) and tablet (12)
It connects, micro process converter is set on tablet (12) and receives transmitter, tablet (12) and DSP control module below
(11) it is connected.
2. the device according to claim 1 that partial pressure and sub-prime injection can be achieved at the same time, it is characterised in that: described stretches
Shorten bar to be slidably connected and constitutes by three section retracting cylinders, from top to bottom respectively first segment retracting cylinder (15), the second section retracting cylinder
(16), third section retracting cylinder (17), spring (18) are set in third section retracting cylinder (17), and first segment retracting cylinder (15) has outer
The barrel of convex ball, the second section retracting cylinder (16) is fluted.
3. the device according to claim 2 that partial pressure and sub-prime injection can be achieved at the same time, it is characterised in that: the shaft
(4) it is connected with motor (8), motor (8) carries out the tune of revolving speed by governor (9) according to the numerical value of speed display (7)
Section.
4. the device according to claim 3 that partial pressure and sub-prime injection can be achieved at the same time, it is characterised in that: the flabellum
(3) there are five groups.
5. a kind of experimental method of the device as claimed in claim 4 that partial pressure and sub-prime injection can be achieved at the same time, it is characterised in that:
Step 1: before injection solution, institute is determined according to the chock pressure difference of expected outer cylinder (1) outlet end and outer cylinder (1) arrival end
The group number for the flabellum for needing to be unfolded, and it is respectively positioned on all groups of flabellums in casing (2)；
Step 2: solution is injected into outer cylinder (1)；
Step 3: changing casing (2) interior flabellum group number, and control becomes the flabellum group number of unfolded state in the flabellum of closed state
Gradually increase, when the flabellum group number in unfolded state changes, the solution of injection where unfolded state flabellum by cutting
The area of passage in face changes, and the flabellum group number in unfolded state is more, the section of outer cylinder outlet end and outer cylinder arrival end
Drift angle is bigger；
Step 4: the revolving speed of the flabellum of expansion is determined according to the molecular weight for the polymer finally to be obtained；
Step 5: being adjusted motor (8) by governor (9), adjusts the speed of shaft (4) rotation, and the range of speeds is
0-2000rpm, until the revolving speed shown on speed display (7) is consistent with expection；When the flabellum revolving speed for being in unfolded state
When changing, the solution of injection when section where unfolded state flabellum by mechanical shearing by being acted on, the molecule of polymer
Amount changes, and the flabellum group number in unfolded state is more, revolving speed is faster, the polymer finally flowed out from outer cylinder outlet end
Molecular weight is smaller；
Step 6: the relationship between polymer solution intrinsic viscosity and polymer solution viscosity is established；
Intrinsic viscosity value [η] its be defined as viscosity numberOr logarithm viscosity numberExtrapolated value in infinite dilution,Polymer solution intrinsic viscosity is calculated to obtain using " one point method ", measures and increases under a concentration
Specific viscosity ηsp, directly calculate intrinsic viscosity value；" one point method " seeks the equation of [η]:C is
The concentration of polymer solution；Wherein ηrFor viscosity ratio, η0For the viscosity of pure solvent, η is
The viscosity of synthermal lower polymer solution；
Step 7: establishing the relationship of polymer molecular weight Yu polymer solution intrinsic viscosity, finally real-time display on computers
The size of polymer molecular weight.
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