CN109342270A - Device and method for determining gelling time of crosslinked polymer solution - Google Patents
Device and method for determining gelling time of crosslinked polymer solution Download PDFInfo
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- CN109342270A CN109342270A CN201811258952.8A CN201811258952A CN109342270A CN 109342270 A CN109342270 A CN 109342270A CN 201811258952 A CN201811258952 A CN 201811258952A CN 109342270 A CN109342270 A CN 109342270A
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- 229920006037 cross link polymer Polymers 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000004576 sand Substances 0.000 claims abstract description 129
- 230000008569 process Effects 0.000 claims abstract description 20
- 238000001879 gelation Methods 0.000 claims description 71
- 239000007788 liquid Substances 0.000 claims description 30
- 238000013480 data collection Methods 0.000 claims description 16
- 238000010008 shearing Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 239000013043 chemical agent Substances 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 129
- 230000015572 biosynthetic process Effects 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 11
- 239000010935 stainless steel Substances 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- 238000004132 cross linking Methods 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 229910001021 Ferroalloy Inorganic materials 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000013501 data transformation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 150000008442 polyphenolic compounds Chemical class 0.000 description 2
- 235000013824 polyphenols Nutrition 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- -1 aluminium Gold Chemical compound 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001596 poly (chlorostyrenes) Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- 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
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device and a method for determining gelling time of a cross-linked polymer solution, and belongs to the technical field of evaluation of oilfield chemical agents. The device comprises a sand filling pipe, a first piston cylinder, a second piston cylinder, a constant flow pump, a first pressure sensor and a second pressure sensor. When the device is used, the cross-linked polymer solution can periodically flow among the first piston cylinder, the sand filling pipe and the second piston cylinder through the driving force of the advection pump, the gelling process of the cross-linked polymer solution under the shearing action of the porous medium is simulated, and when the ratio of the pressure difference between the first pressure sensor and the second pressure sensor in the operation process of the device to the pressure difference at the operation start reaches a first threshold value, the operation time of the device is determined as the gelling time of the cross-linked polymer solution. The gelling time of the cross-linked polymer solution determined by the device can accurately reflect the gelling time of the real cross-linked polymer solution after the cross-linked polymer solution is injected into a stratum.
Description
Technical field
The present invention relates to oilfield chemistry evaluating drug technical field, in particular to when the plastic of a kind of cross-linked polymer solution
Between determining device and determine method.
Background technique
Cross-linked polymer solution is a kind of mixed solution being formulated by high molecular polymer, crosslinking agent and stabilizer,
Its initial viscosity is lower, more liquid, is easy to be injected into stratum from target well.When cross-linked polymer solution is injected into stratum
When, formation temperature can promote to chemically react inside solution, increase the viscosity of solution sharply, and it is solidifying to form cross-linked polymer
Glue.Wherein, cross-linked polymer solution is to need to study at present to the time for forming cross-linked polymer gel after being injected stratum
Cross-linked polymer solution gelation time.
In the related technology, be typically employed in the method tested in laboratory, come determine cross-linked polymer solution at
The glue time specifically includes following two experimental method: first is that by the way that cross-linked polymer solution is rested on environment temperature and stratum
In the identical insulating box of temperature, to determine the gelation time of cross-linked polymer solution；Second is that poly- according to the crosslinking in injection stratum
Polymer solution is the principle of the continuous shear action by porous media in stratum and plastic, by blender constantly to friendship
Linked polymer solution is stirred, and acts on cross-linked polymer solution by mechanical shearing, to determine cross-linked polymer solution
Gelation time.
But experimental method in the related technology, due to can not accurate simulation cross-linked polymer solution in the earth formation true
Real plastic environment, thus determine that cross-linked polymer solution gelation time also cannot in accurate response stratum it is true at
The glue time, so that the gelation time determined in laboratory loses the directive significance to actual field.
Summary of the invention
It the present invention provides a kind of determining device of the gelation time of cross-linked polymer solution and determines method, can solve
In the related technology because laboratory experiment simulated conditions inaccuracy, leads to gelation time and the crosslinking of determining cross-linked polymer solution
The problem of true closing time of polymer solution in the earth formation is not consistent.The technical solution is as follows:
In a first aspect, providing a kind of determining device of the gelation time of cross-linked polymer solution, described device includes: to fill out
Sandpipe, first piston cylinder, second piston cylinder, constant-flux pump, first pressure sensor, second pressure sensor；
The first end of the fill out sand tube is connect with the first end of the first piston cylinder, the second end of the fill out sand tube and institute
The first end connection of second piston cylinder is stated, the fill out sand tube is for filling gravel；
It is provided with first piston in the first piston cylinder, is provided with second piston, and first in the second piston cylinder
Space and second space are used to fill cross-linked polymer solution, and first space refers to that the first piston and described first is lived
The space that the first end of plug cylinder is formed, the second space refer to the first end shape of the second piston Yu the second piston cylinder
At space；
The constant-flux pump is connect with the first piston cylinder and the second piston cylinder respectively, and the constant-flux pump be used for
Liquid is injected in the first piston cylinder and the second piston cylinder；
The first end of the fill out sand tube is arranged in the first pressure sensor, and the second pressure sensor is arranged in institute
State the second end of fill out sand tube.
Optionally, described device further includes the first connecting pipeline, the second connecting pipeline, the first blow-down pipe and the second emptying
Pipeline；
The constant-flux pump is connect by first connecting pipeline with the first piston cylinder, and second connecting tube is passed through
Line is connect with the second piston cylinder；
First blow-down pipe is connected to first connecting pipeline, and second blow-down pipe is connect with described second
Pipeline connection.
Optionally, the first valve and the second valve are provided in first connecting pipeline, in second connecting pipeline
It is provided with third valve and the 4th valve, is provided with the 5th valve on first blow-down pipe, on second blow-down pipe
It is provided with the 6th valve.
Optionally, described device further includes measuring cup and electronic balance；
The measuring cup is arranged on the electronic balance, and first blow-down pipe and second blow-down pipe go out
Mouth end is arranged in the measuring cup.
Optionally, described device further includes the first pressure cap and the second pressure cap；
First pressure cap is set in the second end of the first piston cylinder, and second pressure cap is set in described second
In the second end of piston cylinder.
Optionally, described device further includes the first string joint, the first plug, the second string joint and the second plug；
The first end of the fill out sand tube is by first string joint and first plug, with the first piston cylinder
First end connection, the second end of the fill out sand tube is by second string joint and second plug, with the second piston
The first end of cylinder connects.
Optionally, described device further includes insulating box, and the fill out sand tube, the first piston cylinder and second piston cylinder are located at
In the insulating box.
Optionally, described device further includes at least one auxiliary pressure sensor；
At least one described auxiliary pressure sensor is arranged on the fill out sand tube, at least one aux. pressure sensing
Device is between the first pressure sensor and the second pressure sensor.
Optionally, described device further includes data collection process device；
The data collection process device is connect with the first pressure sensor and the second pressure sensor respectively, is used
In the pressure data for collecting the first pressure sensor and second pressure sensor acquisition.
Second aspect, provides a kind of determination method of the gelation time of cross-linked polymer solution, and this method is applied to the
On the one hand in the determining device of the gelation time of any cross-linked polymer solution provided, which comprises
It obtains in first cycle of operation of the determining device of the gelation time of the cross-linked polymer solution, described first
The first pressure difference between pressure sensor and the pressure data of second pressure sensor acquisition；
Wherein, each cycle of operation refers to the cross-linked polymer in the first piston cylinder or the second piston cylinder is molten
Liquid all injects the operational process of the fill out sand tube；
It obtains in any cycle of operation after first cycle of operation, the first pressure sensor and described
The second pressure difference between the pressure data of two pressure sensors acquisition；
When the ratio of second pressure difference and first pressure difference is equal to the first preset threshold, second pressure difference is determined
The operation duration of the determining device of the gelation time of the corresponding cross-linked polymer solution；
By the operation duration, it is determined as the gelation time of the cross-linked polymer solution.
The beneficial effect of technical solution provided in an embodiment of the present invention includes at least:
The device of the gelation time of determining cross-linked polymer solution provided in an embodiment of the present invention includes fill out sand tube, the first work
Plug cylinder, second piston cylinder, constant-flux pump, first pressure sensor, second pressure sensor, the first connecting pipeline, the second connecting tube
Line and insulating box, first pressure sensor and second pressure sensor are separately positioned on two ports of fill out sand tube.By this hair
The device that bright embodiment provides, can make cross-linked polymer solution between fill out sand tube, first piston cylinder and second piston cylinder not
Cutout is dynamic, so that cross-linked polymer solution can constantly be cut by porous media during forming cross-linked polymer gel
It cuts, since real simulation cross-linked polymer solution is in the earth formation by the shear environment of porous media, accordingly, it is determined that the crosslinking gone out
Polymer solution gelation time can accurately respond true cross-linked polymer solution of the cross-linked polymer solution after injecting stratum
Gelation time, accuracy is higher, so that the gelation time of identified cross-linked polymer solution has the guidance to actual field
Meaning.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of signal of the determining device of the gelation time of cross-linked polymer solution provided in an embodiment of the present invention
Figure；
Fig. 2 is the signal of the determining device of the gelation time of another cross-linked polymer solution provided in an embodiment of the present invention
Figure；
Fig. 3 is a kind of signal of the determination method of the gelation time of cross-linked polymer solution provided in an embodiment of the present invention
Figure.
Appended drawing reference:
1: fill out sand tube；2: first piston cylinder；3: second piston cylinder；4: constant-flux pump；5: first pressure sensor；6: the second pressures
Force snesor；7: the first connecting pipelines；8: the second connecting pipelines；9: the first blow-down pipes；10: the second blow-down pipes；11: amount
Cup；12: electronic balance；13: the first pressure caps；14: the second pressure caps；15: the first string joints；16: the first plugs；17: the second concatenations
Head；18: the second plugs；19: insulating box；20: auxiliary pressure sensor；21: data collection process device；
011: the first end of fill out sand tube；012: the second end of fill out sand tube；021: the first end of first piston cylinder；022: the first
Piston；023: the first space；024: the second end of first piston cylinder；031: the first end of second piston cylinder；032: second piston；
033: second space；034: the second end of second piston cylinder；071: the first valve；072: third valve；081: the four valve；
082: the six valve；091: the second valve；0101: the five valve.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of signal of the determining device of the gelation time of cross-linked polymer solution provided in an embodiment of the present invention
Figure.Referring to Fig. 1, the determining device of the gelation time of cross-linked polymer solution includes: fill out sand tube 1, the work of first piston cylinder 2, second
Plug cylinder 3, constant-flux pump 4, first pressure sensor 5, second pressure sensor 6.
Wherein, the first end 011 of fill out sand tube 1 is connect with the first end 021 of first piston cylinder 2, the second end of fill out sand tube 1
012 connect with the first end 031 of second piston cylinder 3, and fill out sand tube 1 is for filling gravel；It is living that first is provided in first piston cylinder 2
022 is filled in, second piston 032 is provided in second piston cylinder 3, and the first space 023 and second space 033 are poly- for filling crosslinking
Polymer solution, the first space 023 refer to the space that the first end 021 of first piston 022 and first piston cylinder 2 is formed, and second is empty
Between 033 refer to the space that the first end 031 of second piston 032 and second piston cylinder 3 is formed；Constant-flux pump 4 respectively with first piston
Cylinder 2 and second piston cylinder 3 connect, and constant-flux pump 4 is for injecting liquid into first piston cylinder 2 and second piston cylinder 3；First pressure
The first end 011 of fill out sand tube 1 is arranged in force snesor 5, and the second end 012 of fill out sand tube 1 is arranged in second pressure sensor 6.
It should be noted that the determining device of the gelation time of cross-linked polymer solution can be tested indoors,
It can be tested in outdoor, the embodiment of the present invention is not specifically limited in this embodiment.Fill out sand tube 1 is for loading gravel, to pass through
A kind of device of gravel simulated formation porous media.The outside of fill out sand tube 1 is cylindrical body or polygonal cylinder tubular structure, fill out sand tube
1 inside is hollow body, and the shape of hollow body can be cylindrical body or polygonal cylinder, it is preferable that in order to make fill out sand tube 1 facilitate dress
Back-up sand gravel, the boring body of fill out sand tube 1 can be cylindrical body.The length and internal diameter of fill out sand tube 1 can determine by experiment demand,
When experiment need to simulate the thick-layer oil reservoir of large area when, the length and internal diameter of fill out sand tube 1 can be increased, when experiment need to simulate it is small
When the thin layer reservoir of range, the length and internal diameter of fill out sand tube 1 can reduce, the embodiment of the present invention is to the length of fill out sand tube 1 and interior
Diameter is not specifically limited.
In addition, fill out sand tube 1 can be by ferroalloy, aluminium alloy, stainless steel or PVC (Polyvinyl chloride, polychlorostyrene second
Alkene) it is made, the pipe thickness of fill out sand tube 1 is determined by the material of production fill out sand tube 1, makes the compression strength of the material of fill out sand tube 1
Higher, the pipe thickness of fill out sand tube 1 can be thinner, and the compression strength for making the material of fill out sand tube 1 is lower, the tube wall of fill out sand tube 1
Thickness can be thicker, as long as guaranteeing that damaged, deformation does not occur for fill out sand tube 1 when using, the embodiment of the present invention is to fill out sand tube 1
Pipe thickness is not specifically limited.The inner wall of fill out sand tube 1 can be smooth surface, be also possible to the rough table with twill slot
Face prevents cross-linked polymer solution from the inner wall of fill out sand tube 1 so that it is closer to contact the gravel of filling with 1 inner wall of fill out sand tube
Channelling.
In addition, being provided with first pressure sensor 5 in the first end of fill out sand tube 1, set in the second end of fill out sand tube 1
It is equipped with second pressure sensor 6, is flowed through so that when in use cross-linked polymer solution can be monitored by first pressure sensor 5
The flowing pressure when first end 011 of fill out sand tube 1 monitors cross-linked polymer solution by second pressure sensor 6 and flows through back-up sand
The flowing pressure when second end 012 of pipe 1.Optionally, first pressure sensor 5 and second pressure sensor 6 are with real
When show the pressure sensor of pressure functional and data-transformation facility.Moreover, first pressure sensor 5 and second pressure sensor
6 range can be identical, for example, pressure range is 0-10Mpa, operating ambient temperature is 0-80 DEG C.
It should be noted that first piston cylinder 2 be for containing cross-linked polymer solution, and first piston cylinder 2 with
When fill out sand tube 1 connects, the device that is injected into cross-linked polymer solution by external force in fill out sand tube 1.The inside of first piston cylinder 2
It can be cylindrical body or polygonal cylinder, the volume of the inside of first piston cylinder 2 can be determined by experiment demand, when experiment needs one
When secondary property is using large dosage of cross-linked polymer solution, the volume of the inside of first piston cylinder 2 can be increased, namely be increased
The cross-sectional area of the inside of first piston cylinder 2 and the length of first piston cylinder 2, the embodiment of the present invention is to first piston cylinder 2
Inside dimension be not specifically limited.First piston 022 is provided in first piston cylinder 2, it is living by first by first piston 022
The inside of plug cylinder 2 is separated into two spaces, and the shape of first piston 022 is identical with the interior shape of first piston cylinder 2, and first is living
Plug 022 can move in first piston cylinder 2, and first piston 022 has Packed effect, so that in first piston cylinder 2
Two spaces in solution it is relatively independent, be unable to channelling to another space.First piston cylinder 2 can be closed by ferroalloy, aluminium
Gold, stainless steel are made, and the wall thickness of first piston cylinder 2 is determined by the material of production first piston cylinder 2, as long as first when guaranteeing to use
Piston cylinder 2 can bear experimental pressure without deformation or destruction, and the embodiment of the present invention is not specifically limited in this embodiment.The
One piston 022 of ferroalloy, aluminium alloy, stainless steel or PVC to be made, and the thickness of first piston 022 is by production first piston 022
Material determine, as long as guarantee use when first piston 022 can bear experimental pressure without part pierce through or destroy i.e.
Can, the embodiment of the present invention is not specifically limited in this embodiment.
It should be noted that second piston cylinder 3 and first piston cylinder 2 are identical, it is for containing cross-linked polymer solution
, and when second piston cylinder 3 is connect with fill out sand tube 1, the dress that is injected into cross-linked polymer solution by external force in fill out sand tube 1
It sets.Second piston cylinder 3 is identical with making material with the structure of first piston cylinder 2.For example, first piston cylinder 2 and second piston cylinder 3
Making material be stainless steel, length is 40cm, and the inside of first piston cylinder 2 and second piston cylinder 3 is cylindrical body, internal diameter
For 5cm, the wall thickness of first piston cylinder 2 and second piston cylinder 3 is 2mm, and first piston cylinder 2 and second piston cylinder 3 can be with pressure-bearings
16MPa, first piston 022 and 032 thickness of second piston are 5mm.The embodiment of the present invention is only with first piston cylinder 2, second
The structural parameters of piston cylinder 3, first piston 022 and second piston 032 are illustrated, but above structure parameter not structure
The specific restriction of pairs of first piston cylinder 2, second piston cylinder 3, first piston and second piston 032.
It should be noted that the first end 021 and fill out sand tube 1 of the first end 011 of fill out sand tube 1 and first piston cylinder 2
The connection type of second end 012 and the first end 031 of second piston cylinder 3 can be to be attached by connecting pipeline, can also be with
It is attached by string joint and plug.When being attached by string joint and plug, which can also include the first pressure
Cap 13 and the second pressure cap 14, the embodiment of the present invention to the first end 011 of fill out sand tube 1 and the first end 021 of first piston cylinder 2 and
The specific connection type of the first end 031 of the second end 012 and second piston cylinder 3 of fill out sand tube 1 is not specifically limited.
Optionally, when the first end 011 of fill out sand tube 1 and first piston cylinder 2 first end 021 and fill out sand tube 1 second
End 012 and the first end 031 of second piston cylinder 3 be when being attached by connecting pipeline, fill out sand tube 1, first piston cylinder 2 and the
Two piston cylinders 3 are three independent components.It should be noted that connecting pipeline can appointing for stainless steel, PVC and rubber hose
The inside diameter ranges of a kind of pipeline, connecting pipeline can be 3mm-5mm, and the both ends of connecting pipeline are provided with general connector, general
The outside of connector is provided with external screw thread.
In one embodiment, the first end 011 and second end 012 of fill out sand tube 1 be provided with fill out sand tube 1 can be carried out it is close
Fluted, the cross-sectional area of groove is arranged in the first end of the first pipe lid and the second pipe lid of envelope, the first pipe lid and the second pipe lid
Identical as the cross-sectional area of the inside of fill out sand tube 1, the first end 011 of fill out sand tube 1 and the outside of second end 012 are provided with outer spiral shell
The groove surfaces of line, the first pipe lid and the second pipe lid are provided with and the external setting of the first end 011 of fill out sand tube 1 and second end
The second of the first end 011 of the internal screw thread that external screw thread matches, the first pipe lid and fill out sand tube 1 and the second pipe lid and fill out sand tube 1
End 012 can be attached by screw thread respectively, and the second end of the first pipe lid and the second pipe lid is provided with connector, connector
For hollow cylinder, the internal diameter of connector and the outer diameter of general connector of connecting pipeline are identical, the hollow cylinder of connector
It being connected to groove, connector inner wall is provided with the internal screw thread that the external screw thread on the general connector with connecting pipeline matches, the
One pipe lid and the second pipe lid are threadedly coupled by the general connector of connector and connecting pipeline with connecting pipeline.
The first end 021 and second end 024 of first piston cylinder 2 are provided with can be sealed to first piston cylinder 2
Fluted, the cross-sectional area of groove and first is arranged in the first end of three pipe lids and the 4th pipe lid, third pipe lid and the 4th pipe lid
The cross-sectional area of the inside of piston cylinder 2 is identical, and the first end 021 of first piston cylinder 2 and the outside of second end 204 are provided with outside
The groove surfaces of screw thread, third pipe lid and the 4th pipe lid are provided with and the first end 021 of first piston cylinder 2 and second end 204
The internal screw thread that matches of external screw thread of outside setting, the first end 021 and the 4th pipe lid of third pipe lid and first piston cylinder 2 and
The second end 024 of first piston cylinder 2 can be attached by screw thread respectively, and the second end of third pipe lid and the 4th pipe lid is all provided with
It is equipped with connector, connector is hollow cylinder, and the internal diameter of connector and the outer diameter of general connector of connecting pipeline are identical, even
The hollow cylinder of connector is connected to groove, and connector inner wall is provided with the external screw thread phase on the general connector with connecting pipeline
The general connector and connecting pipeline screw thread that matched internal screw thread, third pipe lid and the 4th pipe lid pass through connector and connecting pipeline
Connection.
The first end 031 and second end 034 of second piston cylinder 3 are provided with can be sealed to second piston cylinder 3
Fluted, the cross-sectional area of groove and second is arranged in the first end of five pipe lids and the 6th pipe lid, the 5th pipe lid and the 6th pipe lid
The cross-sectional area of the inside of piston cylinder 3 is identical, and the first end 031 of second piston cylinder 3 and the outside of second end 034 are provided with outside
The groove surfaces of screw thread, the 5th pipe lid and the 6th pipe lid are provided with and the first end 031 of second piston cylinder 3 and second end 034
The internal screw thread that matches of external screw thread of outside setting, the first end 031 and the 6th pipe lid of the 5th pipe lid and second piston cylinder 3 and
The second end 034 of second piston cylinder 3 can be attached by screw thread respectively, and the second end of the 5th pipe lid and the 6th pipe lid is all provided with
It is equipped with connector, connector is hollow cylinder, and the internal diameter of connector and the outer diameter of general connector of connecting pipeline are identical, even
The hollow cylinder of connector is connected to groove, and connector inner wall is provided with the external screw thread phase on the general connector with connecting pipeline
The general connector and connecting pipeline screw thread that matched internal screw thread, the 5th pipe lid and the 6th pipe lid pass through connector and connecting pipeline
Connection.
For example, when connecting pipeline be 4mm steel pipeline when, the first pipe lid, the second pipe lid, third pipe lid, the 4th pipe lid,
The internal diameter for the connector that 5th pipe lid and the 6th pipe cover can be 4mm, and the embodiment of the present invention is not specifically limited in this embodiment.
Optionally, when the first end 011 of fill out sand tube 1 and first piston cylinder 2 first end 021 and fill out sand tube 1 second
End 012 and the first end 031 of second piston cylinder 3 are fill out sand tube 1, first piston cylinder 2 when being attached by string joint and plug
It is a complete device with second piston cylinder 3.
It should be noted that can be by the first plug 16 by the of the first end 011 of fill out sand tube 1 and first piston cylinder 2
One end 021 connects, and is connect the second end 012 of fill out sand tube 1 with the first end 031 of second piston cylinder 3 by the second plug 18.It is stifled
The shape and the interior shape and first piston cylinder 2 of fill out sand tube 1 and the interior shape of second piston cylinder 3 of head are all the same, when filling out
When the inside of sandpipe 1 and the inside of first piston cylinder 2 and second piston cylinder 3 are cylindrical body, plug is cylindrical body, works as back-up sand
When the inside of pipe 1 is polygonal cylinder for the inside of cylindrical body first piston cylinder 2 and second piston cylinder 3, plug and fill out sand tube 1 connect
The part connect can be cylindrical body, and the part connecting with first piston cylinder 2 and second piston cylinder 3 can be polygonal cylinder, this hair
Bright embodiment is not specifically limited the shape of plug.
In addition, passing through plug to fill out sand tube to reduce cross-linked polymer solution from first piston cylinder 2 and second piston cylinder 3
The shearing force being subject to when 1 flowing, can also be arranged at least three flow channels in plug.Optionally, each flow channel
Internal diameter is greater than connecting pipeline internal diameter.It should be noted that the internal diameter of flow channel is bigger, cross-linked polymer solution is from first piston
The shearing force that cylinder 2 and second piston cylinder 3 are subject to when being flowed by plug to fill out sand tube 1 is smaller, so as to ensure cross-linked polymeric
Only the shear action by porous media, the determination for improving the gelation time of cross-linked polymer solution fill object solution in flowing
Set the simulation degree to stratum.
In addition, the first end 011 when fill out sand tube 1 is connect with the first end 021 of first piston cylinder 2 by the first plug 16,
When the second end 012 of fill out sand tube 1 is connect with the first end 031 of second piston cylinder 3 by the second plug 18, since plug does not have
Fixed function, and hence it is also possible to pass through the first string joint 15 for the first end of the first end 011 of fill out sand tube 1 and first piston cylinder 2
021 is fixedly connected, by the second string joint 17 that the second end 012 of fill out sand tube 1 and the first end 031 of second piston cylinder 3 is fixed
Connection.First string joint 15 is identical with the structure snd size of the second string joint 17, the first string joint 15 can be lock ring ring, first
String joint 15 is set in the outer wall of the first end 021 of first piston cylinder 2 and the first end 011 of fill out sand tube 1, is gone here and there by lock ring first
Connector 15 keeps the first string joint 15 that the first end 021 of first piston cylinder 2 and the first end 011 of fill out sand tube 1 is fixed.Production the
The material of one string joint 15 can be aluminium alloy, ferroalloy or stainless steel, as long as guaranteeing that the first string joint 15 makes the when in use
The first end 021 of one piston cylinder 2 and the first end 011 of fill out sand tube 1 fasten, and the embodiment of the present invention does not do specific limit to this
It is fixed.
In addition, when the first end 011 and the first end 021 of first piston cylinder 2 and the second end of fill out sand tube 1 of fill out sand tube 1
012 with the first end 031 of second piston cylinder 3 is when being attached by string joint and plug, which can also include first
Pressure cap 13 and the second pressure cap 14.One end setting of first pressure cap 13 is fluted, and the internal diameter of the groove of the first pressure cap 13 and first is lived
The outer diameter of plug cylinder 2 is identical, and the second end 024 of first piston cylinder 2 can be directly installed in the groove of the first pressure cap 13, can also be with
Internal screw thread is set in the groove of the first pressure cap 13, outer wall setting and the first pressure cap 13 in the second end 024 of first piston cylinder 2
Groove the external screw thread that matches of internal screw thread, be threadedly coupled the first pressure cap 13 and first piston cylinder 2.First pressure cap 13 it is another
The center of one end is provided with through-hole, and the internal diameter of through-hole is greater than the outer diameter of the connector of connecting pipeline, and the internal diameter of through-hole is small
In the internal diameter of the groove of the first pressure cap.The two sides outer wall of the other end of first pressure cap 13 is respectively arranged with reinforcing hole.First pressure cap
13 can be made of aluminium alloy, ferroalloy or stainless steel, if guarantee the first pressure cap 13 do not deform during the experiment or
Damage, the embodiment of the present invention are not specifically limited the external dimensions of the first pressure cap 13.It should be noted that due to first piston
Cylinder 2 is identical with the structure snd size of second piston cylinder 3, therefore, the structure snd size of the second pressure cap 14 and the first pressure cap 13 also phase
Together, the structure and size of the second pressure cap 14 and making material can refer to the structure and size and making material of the first pressure cap 13.
In addition, the device further includes third plug and the 4th plug, the structure snd size phase of third plug and the 4th plug
Together.The outer diameter of the first part of third plug is identical as the internal diameter of through-hole of the first pressure cap 13, and the length of first part can be big
In or equal to the first pressure cap 13 through-hole length, the outer diameter phase of the outer diameter and first piston cylinder 2 of the second part of third plug
Together, the outer diameter of the Part III of third plug is identical as the internal diameter of piston cylinder, and the center of third plug is provided with logical
Slot, the internal diameter of through slot and the internal diameter of connecting pipeline are identical.The setting of third plug is when the first pressure cap 13 and first piston cylinder 2 connect
Connection gap, for sealing the connection gap of the first pressure cap 13 and first piston cylinder 2.4th plug is arranged in the second pressure cap
14 and second piston cylinder 3 connect when connection gap, for sealing the connection gap of the second pressure cap 14 and second piston cylinder 3.
When in use, fill out sand tube 1, first piston cylinder 2 and second piston cylinder 3 can be directly placed at normal temperature laboratory, pass through
Injection temperature cross-linked polymer solution identical with reservoir temperature simulates the cross-linked polymer solution in the earth formation by porous media
Shearing.In another embodiment, which can also include insulating box 19, and fill out sand tube 1, first piston cylinder 2 and second is living
Plug cylinder 3 is placed in insulating box 19, by the way that the temperature of insulating box 19 is arranged, makes fill out sand tube 1, first piston cylinder 2 and second piston
Cylinder 3 is in the experimental situation of formation temperature, to simulate the cross-linked polymer solution in the earth formation by the shearing of porous media.
It should be noted that insulating box 19 also known as air dry oven, are realized by the cooperation of temp probe and air-heater
A kind of experiment instrument that the intracorporal temperature of case is kept constant.In one possible implementation, the temperature tune of insulating box 19
Adjusting range is 10~200 DEG C, and it is 380V using power supply, the inside dimension of the insulating box 19 can be length that temperature-controlled precision, which is 2 DEG C,
150cm, height 80cm, width 80cm, the top tape air hole of insulating box 19, the side wall of insulating box 19 be respectively set internal diameter with
The identical through-hole of first pipeline outer diameter, the inside setting of insulating box 19 by there is bracket, as long as guarantee bracket can by fill out sand tube 1,
First piston cylinder 2 and second piston cylinder 3 are fixed in insulating box 19 without toppling over, and the embodiment of the present invention is to bracket
Type is not specifically limited.
It should be noted that constant-flux pump 4 is that one kind can make fluid by certain flow velocity or certain pressure constant flow
Hydraulic power supply.The kind of liquid that constant-flux pump 4 can drive can be kerosene or distilled water.It is alternatively possible to be constant-flux pump 4
Maximum working pressure (MWP) is set, so that constant-flux pump 4 can be automatically stopped work when the operating pressure of constant-flux pump 4 reaches maximum pressure
Make, to protect constant-flux pump 4 not by the destruction of high pressure.Optionally, constant-flux pump 4 can choose the constant-flux pump of model ISCO 260D
The flow set of the constant-flux pump 4 may range from 0.001-107mL/min, and pressure setting may range from 0.06895-
51.7MPa, the temperature of working environment are 5-40 DEG C, the embodiment of the present invention not the concrete model to constant-flux pump 4 and running parameter into
Row limits.
Furthermore it is possible to first outlet and second outlet be arranged on constant-flux pump 4, by first outlet and first piston cylinder 2
Second end 024 connects, and second outlet is connect with the second end 034 of second piston cylinder 3, can also be arranged one on constant-flux pump 4
Constant-flux pump 4 is connect by a outlet by the first connecting pipeline 7 drawn from the outlet with the second end 024 of first piston cylinder 2,
Constant-flux pump 4 is connect with the second end 034 of second piston cylinder 3 by the second connecting pipeline 8 drawn from the outlet.The present invention is real
Example is applied to be not specifically limited constant-flux pump 4 and the connection type of first piston cylinder 2 and second piston cylinder 3.
It, can be with before the gelation time that cross-linked polymer solution is determined using device shown in fig. 1 in the embodiment of the present invention
First to fill out sand tube 1 fill gravel, and after having filled gravel measure fill out sand tube 1 physical parameter, as pore volume, porosity,
Permeability, water survey pressure difference etc..After the physical parameter that fill out sand tube 1 has been determined, certain volume is prepared according to the pore volume of fill out sand tube 1
Cross-linked polymer solution, prepared cross-linked polymer solution is fitted into the first space 023 of first piston cylinder 2, will
Displacement liquid fills up in another space in second piston cylinder 3 in addition to second space 033, and the spatial volume of second space 033
It is zero.After experiment starts, constant-flux pump 4 inhales the displacement liquid in another space in second piston cylinder 3 in addition to second space 033
Out and driving is in another space into first piston cylinder 2 in addition to the first space 023, and the first space 023 is removed in first piston cylinder 2
Displacement liquid in outer another space, which increases, pushes first piston 022 mobile to fill out sand tube direction, and will be in the first space 023
Cross-linked polymer solution flow in second space 033 by fill out sand tube 1, when the spatial volume in the first space 022 is zero,
Displacement liquid in another space in first piston cylinder 2 in addition to the first space 023 is sucked out 4 switch operating process of constant-flux pump
And drive in another space into second piston cylinder 3 in addition to second space 033, in second piston cylinder 3 in addition to second space 033
Another space in displacement liquid increase and push second piston 032 mobile to fill out sand tube direction, and will be in second space 033
Cross-linked polymer solution flows in the first space 023 by fill out sand tube 1, thus runs repeatedly, makes cross-linked polymer solution not
It is open close to cross fill out sand tube 1, simulate plastic process when cross-linked polymer solution is constantly sheared by porous media at the formation temperature.
Since real simulation cross-linked polymer solution is in the earth formation by the shear environment of porous media, accordingly, it is determined that the crosslinking gone out is poly-
Polymer solution gelation time can accurately respond true cross-linked polymer solution of the cross-linked polymer solution after injecting stratum at
The glue time instructs cross-linked polymer solution in reality so that the gelation time of the cross-linked polymer solution determined in laboratory has
The meaning of the application at scene.
Fig. 2 is the signal of the determining device of the gelation time of another cross-linked polymer solution provided in an embodiment of the present invention
Figure.Referring to fig. 2, pressure at 1 different location of fill out sand tube is flowed through in order to accurately monitor cross-linked polymer solution, with poly- according to crosslinking
The pressure that polymer solution flows through at 1 different location of fill out sand tube determines that cross-linked polymer solution flows through the barometric gradient of fill out sand tube 1, should
The determining device of the gelation time of cross-linked polymer solution can also include at least one auxiliary pressure sensor 20, at least one
Auxiliary pressure sensor 20 is arranged on fill out sand tube 1, between first pressure sensor 5 and second pressure sensor 6.It is optional
Ground, auxiliary pressure sensor 20 and first pressure sensor 5 are identical as the type of second pressure sensor 6, it may have aobvious in real time
Show pressure functional and data-transformation facility.
In addition, referring to fig. 2, when one outlet is arranged on constant-flux pump 4, which further includes the first connecting pipeline 7, second
Connecting pipeline 8, the first blow-down pipe 9 and the second blow-down pipe 10；Constant-flux pump 4 passes through the first connecting pipeline 7 and first piston cylinder 2
Connection, is connect by the second connecting pipeline 8 with second piston cylinder 3；First blow-down pipe 9 is connected to the first connecting pipeline 7, and second
Blow-down pipe 10 is connected to the second connecting pipeline 8.Blow-down pipe refers to pipeline of the exit without sealing and connecting pin, flows into emptying
The liquid of pipeline can directly be flowed out from outlet.
It should be noted that the first connecting pipeline 7 can for stainless steel, PVC and rubber hose any pipeline, first
The inside diameter ranges of connecting pipeline 7 can be 3mm-5mm, and the both ends of the first connecting pipeline 7 are provided with general connector, general connection
The outside of head is provided with external screw thread, and general connector can be with the second end 024 or the second of the outlet of constant-flux pump 4, first piston cylinder 2
The second end 034 of piston cylinder 3 is threadedly coupled.In addition, the first connecting pipeline 7, the second connecting pipeline 8, the first blow-down pipe 9 and
The material and specification of two blow-down pipes 10 are all the same.
Optionally, the first connecting pipeline 7 and the second connecting pipeline 8 are connected in parallel with constant-flux pump 4, the first connecting pipeline 7
It is connect by threeway connection valve with constant-flux pump 4 with the second connecting pipeline 8.First blow-down pipe 9 passes through threeway connection valve and first
Connecting pipeline 7 is connected to, and the second blow-down pipe 10 is connected to by threeway connection valve with the second connecting pipeline 8.Threeway connection valve can be with
For the connection valve of stainless steel, to improve the compression strength of pipeline junction.
Referring to fig. 2, it in order to collect the emptying liquid flowed out from the first blow-down pipe 9 and the second blow-down pipe 10, and determines
It is vented the liquid measure of liquid, which can also include measuring cup 11 and electronic balance 12, and measuring cup 11 is arranged on electronic balance 12, and
The outlet end of first blow-down pipe 9 and the second blow-down pipe 10 is arranged in measuring cup 11.
It should be noted that measuring cup 11 can be the normal glass measuring cup 11 of any capacity, if guarantee when in use from
The liquid measure of first blow-down pipe 9 and the emptying liquid of the second blow-down pipe 10 outflow is no more than the maximum range of measuring cup 11,
The embodiment of the present invention is not specifically limited in this embodiment.The range of electronic balance 12 can be according to the first blow-down pipe 9 and the second emptying
The liquid measure for the emptying liquid that pipeline 10 flows out determines, as long as guaranteeing that electronic balance 12 can be with precise measurement from the first blow-down pipe 9
With the quality of the emptying liquid of the second blow-down pipe 10 outflow, the embodiment of the present invention is not specifically limited in this embodiment.In use,
What electronic balance 12 measured is the quality and measuring cup of the emptying liquid flowed out from the first blow-down pipe 9 and the second blow-down pipe 10
The sum of 11 quality, therefore, in the quality for determining the emptying liquid flowed out from the first blow-down pipe 9 and the second blow-down pipe 10
When, the quality of measuring cup 11 can be subtracted from the gross mass that electronic balance 12 determines, or placing measuring cup 11 and opening electronics day
When flat 12, the quality of measuring cup 11 is subjected to return-to-zero using the peeling function of electronic balance 12.Electronic balance 12 can be for only
There are measurement module, display module, measurement module, display module, data recordin module and data transmission can also be possessed simultaneously
Module.
Optionally, in order to make constant-flux pump 4 cut off in not termination of pumping or not the shape of the first connecting pipeline 7 and the second connecting pipeline 8
The open and close of the first connecting pipeline 7 and the second connecting pipeline 8 are controlled under state respectively, it can also be in the first connecting pipeline 7
First valve 071 and third valve 072 are set, the 4th valve 081 and the 6th valve 082 are provided in the second connecting pipeline 8, the
It is provided with the second valve 091 on one blow-down pipe 9, is provided with the 5th valve 0101 on the second blow-down pipe 10.
It should be noted that the first valve 071, third valve 072, the 4th valve 081, the 6th valve 082, the second valve
091 is identical with the valve types of the 5th valve 0101, and valve can be needle valve door, ball valve or solenoid valve, as long as guaranteeing
Valve can fast and accurately realize the unlatching and disconnection to pipeline, the embodiment of the present invention to the concrete type of valve not
It limits.
Referring to fig. 2, in order to realize cross-linked polymer solution gelation time determining device automatic operating, the device
It can also include data collection process device 21, data collection process device 21 is passed with first pressure sensor 5 and second pressure respectively
Sensor 6 connects, for collecting the pressure data of first pressure sensor 5 and the acquisition of second pressure sensor 6.
It should be noted that data collection process device 21 can be a kind of calculating for being mounted with data collection and processing routine
Machine, mobile phone or plate, the data collection process device 21 with first pressure sensor 5 and second pressure sensor 6 by connecting respectively
It connects, collects the pressure data of first pressure sensor 5 and the acquisition of second pressure sensor 6 when in use, and according to the number pressure
According to the gelation time for determining cross-linked polymer solution.
In one implementation, which can be computer, and the computer and first pressure pass
Sensor 5 and second pressure sensor 6 connect, and the first pressure is obtained when first pressure sensor 5 and second pressure sensor 6 work
The pressure data that force snesor 5 and second pressure sensor 6 acquire, and data processing is carried out to the pressure data.For example, the meter
The data collection process software worked out with Visual Basic programming tool is mounted on calculation machine, by the way that software is carried out data
It collects and handles.It should be noted that in this implementation, also needing the amount claimed by technical staff according to electronic balance 12
Liquid quality in cup 11 is to the first valve 071, third valve 072, the 4th valve 081, the 6th valve 082, the second valve 091
Operation that is manually opened and closing is carried out with the 5th valve 0101.
In another implementation, which can be computer, the computer and first pressure
Sensor 5, second pressure sensor 6, at least one auxiliary pressure sensor 20, electronic balance 12, the first valve 071, third
Valve 072, the 4th valve 081, the 6th valve 082, the second valve 091 and the 5th valve 0101 are separately connected.At data collection
Managing device 21 can be determining living from first in cross-linked polymer solution according to the liquid quality in the measuring cup 11 that electronic balance 12 claims
Plug cylinder 2 flow to second piston cylinder 3 or from second piston cylinder 3 flow to first piston cylinder 2 during piston movement position, and root
The first valve 071, third valve 072, the 4th valve 081, the are controlled by intended valve open mode according to the movement position of piston
Six valves 082, the second valve 091 and the 5th valve 0101 open and close automatically.It is living from first in cross-linked polymer solution
During plug cylinder 2 flows to second piston cylinder 3 or flows to first piston cylinder 2 from second piston cylinder 3, the data collection process device 21
The pressure of first pressure sensor 5, second pressure sensor 6 and the acquisition of at least one auxiliary pressure sensor 20 can also be obtained
Data, the pressure acquired according to first pressure sensor 5, second pressure sensor 6 and at least one auxiliary pressure sensor 20
Data determine the barometric gradient of fill out sand tube 1 when cross-linked polymer solution flows in fill out sand tube 1, according to first pressure sensor 5
It is determined with the pressure data that second pressure sensor 6 acquires and data processing is carried out to the pressure data, and according to data processing knot
The gelation time of fruit cross-linked polymer solution.Optionally, it is mounted with to be worked out with Visual Basic programming tool on the computer
Data collection process software, by by software carry out data collection and processing.
Before determining the gelation time of cross-linked polymer solution using the device, gravel first can be filled to fill out sand tube 1,
And the physical parameter of fill out sand tube 1 is measured after having filled gravel, such as pore volume, porosity, permeability, water survey pressure difference.Really
After the physical parameter for having determined fill out sand tube 1, the cross-linked polymer solution of certain volume is prepared according to the pore volume of fill out sand tube 1,
Prepared cross-linked polymer solution is packed into the first space 023 of first piston cylinder 2, displacement liquid is filled up into second piston cylinder
The space opposite with second space 033 in 3, at this point, the spatial volume of second space 033 is zero.By fill out sand tube 1 and first piston
Cylinder 2 and second piston cylinder 3 are connected and are placed in insulating box 19, and constant-flux pump 4 is connected by the first connecting pipeline 7, second
Pipeline 8, the second blow-down pipe 10, the second blow-down pipe 10 are connect with first piston cylinder 2 and second piston cylinder 3, by data collection
Processor 21 and first pressure sensor 5, second pressure sensor 6, at least one auxiliary pressure sensor 20, the first valve
071, third valve 072, the 4th valve 081, the 6th valve 082, the second valve 091 and the electrical connection of the 5th valve 0101.Start
When experiment, the first valve 071, the 4th valve 081, the 6th valve 082 and the second valve 091 are opened, closes 072 He of third valve
5th valve 0101, make constant-flux pump 4 flow out liquid by the first connecting pipeline 7 enter first piston cylinder 2 with the first space
023 opposite space, and push first piston 022 to transport to the connection direction of first piston cylinder 2 and fill out sand tube 1 using displacement pressure
It is dynamic, so that the cross-linked polymer solution in the first space 023 be made to flow into second piston cylinder 3, second piston cylinder 3 by fill out sand tube 1
In displacement liquid in the space opposite with second space 033 flowed into measuring cup 11 by the second blow-down pipe 10.In constant-flux pump 4
Displacement pressure be higher than service pressure when, determine cross-linked polymer solution all from first piston cylinder 2 inflow second piston
Cylinder 3 opens third valve 072 and the 5th valve 0101 at this point, keeping the 4th valve 081 and 082 state of the 6th valve constant,
The the firstth valve 071 and the second valve 091 are closed, the liquid for flowing out constant-flux pump 4 enters second by the second connecting pipeline 8 and lives
The space opposite with second space 033 of plug cylinder 3, and using displacement pressure push second piston 032 to second piston cylinder 3 with fill out
The connection direction of sandpipe 1 moves, and lives so that the cross-linked polymer solution in second space 033 be made to flow into first by fill out sand tube 1
Plug cylinder 2, the displacement liquid in first piston cylinder 2 in the space opposite with the first space 023 pass through 9 influx of the first blow-down pipe
In cup 11, thus runs repeatedly, cross-linked polymer solution is made constantly to pass through fill out sand tube 1, simulate cross-linked polymer solution on ground
Plastic process when constantly being sheared by porous media at a temperature of layer.Due to real simulation cross-linked polymer solution in the earth formation by
The shear environment of porous media, accordingly, it is determined that the cross-linked polymer solution gelation time gone out can accurately respond cross-linked polymer
True cross-linked polymer solution gelation time of the solution after injecting stratum, so that the cross-linked polymer solution determined in laboratory
Gelation time have instruct cross-linked polymer solution in the meaning of the application of actual field.
Fig. 3 is a kind of signal of the determination method of the gelation time of cross-linked polymer solution provided in an embodiment of the present invention
Figure.Referring to Fig. 3, this method is applied in the determining device of the gelation time of cross-linked polymer solution, and method includes:
Step 301: obtaining in first cycle of operation of the determining device of the gelation time of cross-linked polymer solution, first
The first pressure difference between pressure sensor and the pressure data of second pressure sensor acquisition.
Step 302: in any cycle of operation after first cycle of operation of acquisition, first pressure sensor and the second pressure
The second pressure difference between the pressure data of force snesor acquisition.
Step 303: when the ratio of the second pressure difference and the first pressure difference is equal to the first preset threshold, determining that the second pressure difference is corresponding
Cross-linked polymer solution gelation time determining device operation duration.
Step 304: by operation duration, being determined as the gelation time of cross-linked polymer solution.
Wherein, the ratio of the second pressure difference and the first pressure difference when the first preset threshold is cross-linked polymer solution plastic.In reality
In the application of border, the first preset threshold can be inputted to obtain by user, can also send to obtain by other equipment, the embodiment of the present invention
It is not specifically limited in this embodiment.It should be noted that the formula due to different cross-linked polymer solutions is different, cross-linked polymer is molten
The gelation time and gelling strength of liquid are different, and therefore, it is pre- that different cross-linked polymer solutions can be corresponding with different first
If threshold value.For example, 0., experimental temperature of the cross-linked polymer solution of the oligomeric polyphenol crosslinking agent of 5% polymer+0.5% at 60 DEG C
Under the first preset threshold can be 30, the embodiment of the present invention is not specifically limited the first preset threshold.
It should be noted that each cycle of operation refers to, dress is determined in the gelation time using cross-linked polymer solution
When setting, the cross-linked polymer solution in first piston cylinder or second piston cylinder is all injected to the operational process of fill out sand tube.First
Pressure difference by cross-linked polymer solution gelation time determining device when bringing into operation, first pressure in first cycle of operation
Sensor and the pressure data of second pressure sensor acquisition determine that the first pressure difference is equal to the first of first pressure sensor acquisition
The absolute value of the difference of pressure data and the second pressure data of second pressure sensor acquisition.
In addition, the flow resistance of cross-linked polymer solution becomes larger since cross-linked polymer solution is with the growth of time,
The flowing pressure generated in fill out sand tube also becomes larger, therefore, the first pressure in any cycle of operation after first cycle of operation
Force snesor and second pressure sensor acquisition pressure data between the second pressure difference be greater than a big pressure difference, when the second pressure difference with
When the ratio of first pressure difference is equal to the first preset threshold, it can determine cross-linked polymer solution corresponding to this cycle of operation
Reach plastic standard in time, at this point, the operation duration of the determining device of the gelation time of cross-linked polymer solution can be true
It is set to the gelation time of cross-linked polymer solution.
In a possible embodiment, the cross-linked polymeric of the oligomeric polyphenol type crosslinking agent of 0.5% polymer+0.5% is determined
Gelation time of the object solution when formation temperature is 60 DEG C, after starting experiment, the first pressure difference when recording for first cycle of operation is
0.005MPa, and when the second pressure difference reaches 30 times of the first pressure difference, it that is to say that experimental period when the second pressure difference is 0.15MPa is
148 hours, hence, it can be determined that gelation time of the cross-linked polymer solution under the shear action persistently by porous media is
148 hours.
It should be noted that above-mentioned cross-linked polymer solution, formation temperature, the first pressure difference, the second pressure difference, experimental period and
Gelation time is only example data provided in an embodiment of the present invention, can also be other data in practical application, the present invention is real
Example is applied to be not specifically limited in this embodiment.
The embodiment of the present invention it is poly- can to obtain crosslinking when the determining device of the gelation time of cross-linked polymer solution is run
In first cycle of operation of the determining device of the gelation time of polymer solution, first pressure sensor and second pressure sensor
The first pressure difference between the pressure data of acquisition obtains in any cycle of operation after first cycle of operation, first pressure
The second pressure difference between sensor and the pressure data of second pressure sensor acquisition, when the ratio of the second pressure difference and the first pressure difference
When equal to the first preset threshold, the operation of the determining device of the gelation time of the corresponding cross-linked polymer solution of the second pressure difference is determined
Operation duration is determined as the gelation time of cross-linked polymer solution by duration.The cross-linked polymer solution gelation time determined
It can accurately respond true cross-linked polymer solution gelation time of the cross-linked polymer solution after injecting stratum, so that laboratory
The gelation time of the cross-linked polymer solution of interior determination, which has, instructs cross-linked polymer solution in the meaning of the application of actual field.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of determining device of the gelation time of cross-linked polymer solution, which is characterized in that described device includes fill out sand tube
(1), first piston cylinder (2), second piston cylinder (3), constant-flux pump (4), first pressure sensor (5), second pressure sensor
(6)；
The first end (011) of the fill out sand tube (1) is connect with the first end (021) of the first piston cylinder (2), the fill out sand tube
(1) second end (012) is connect with the first end (031) of the second piston cylinder (3), and the fill out sand tube (1) is for filling sand
Gravel；
It is provided with first piston (022) in the first piston cylinder (2), is provided with second piston in the second piston cylinder (3)
(032), and the first space (023) and second space (033) are for filling cross-linked polymer solution, first space (023)
Refer to the space that the first end (021) of the first piston (022) and the first piston cylinder (2) is formed, the second space
(033) refer to the space that the first end (031) of the second piston (032) and the second piston cylinder (3) is formed；
The constant-flux pump (4) connect with the first piston cylinder (2) and the second piston cylinder (3) respectively, and the constant-flux pump
(4) for injecting liquid into the first piston cylinder (2) and the second piston cylinder (3)；
First end (011) of first pressure sensor (5) setting in the fill out sand tube (1), the second pressure sensor
(6) second end (012) in the fill out sand tube (1) is set.
2. the determining device of the gelation time of cross-linked polymer solution according to claim 1, which is characterized in that the dress
Set further includes the first connecting pipeline (7), the second connecting pipeline (8), the first blow-down pipe (9) and the second blow-down pipe (10)；
The constant-flux pump (4) is connect by first connecting pipeline (7) with the first piston cylinder (2), passes through described second
Connecting pipeline (8) is connect with the second piston cylinder (3)；
First blow-down pipe (9) is connected to first connecting pipeline (7), second blow-down pipe (10) and described the
Two connecting pipelines (8) connection.
3. the determining device of the gelation time of cross-linked polymer solution according to claim 2, which is characterized in that described
It is provided with the first valve (071) and the second valve (072) in one connecting pipeline (7), is provided on second connecting pipeline (8)
Third valve (081) and the 4th valve (082), are provided with the 5th valve (091) on first blow-down pipe (9), and described
The 6th valve (0101) is provided on two blow-down pipes (10).
4. the determining device of the gelation time of cross-linked polymer solution according to claim 2, which is characterized in that the dress
Set further includes measuring cup (11) and electronic balance (12)；
The measuring cup (11) is arranged on the electronic balance (12), and first blow-down pipe (9) and second emptying
The outlet end setting of pipeline (10) is in the measuring cup (11).
5. the determining device of the gelation time of cross-linked polymer solution according to claim 1, which is characterized in that the dress
Set further includes the first pressure cap (13) and the second pressure cap (14)；
First pressure cap (13) is set in the second end (024) of the first piston cylinder (2), the second pressure cap (14) set
It is located in the second end (034) of the second piston cylinder (3).
6. the determining device of the gelation time of cross-linked polymer solution according to claim 1, which is characterized in that the dress
Set further includes the first string joint (15), the first plug (16), the second string joint (17) and the second plug (18)；
The first end (011) of the fill out sand tube (1) is and described by first string joint (15) and first plug (16)
The first end (021) of first piston cylinder (2) connects, and the second end (012) of the fill out sand tube (1) passes through second string joint
(17) and second plug (18) it, is connect with the first end (031) of the second piston cylinder (3).
7. the determining device of the gelation time of -6 any cross-linked polymer solutions according to claim 1, which is characterized in that
Described device further includes insulating box (19), and the fill out sand tube (1), the first piston cylinder (2) and second piston cylinder (3) are located at institute
It states in insulating box (19).
8. the determining device of the gelation time of -6 any cross-linked polymer solutions according to claim 1, which is characterized in that
Described device further includes at least one auxiliary pressure sensor (20)；
At least one described auxiliary pressure sensor (20) is arranged on the fill out sand tube (1), at least one described aux. pressure
Sensor (20) is between the first pressure sensor (5) and the second pressure sensor (6).
9. the determining device of the gelation time of -6 any cross-linked polymer solutions according to claim 1, which is characterized in that
Described device further includes data collection process device (21)；
The data collection process device (21) respectively with the first pressure sensor (5) and the second pressure sensor (6)
Connection, for collecting the pressure data of the first pressure sensor (5) and the second pressure sensor (6) acquisition.
10. a kind of determination method of the gelation time of cross-linked polymer solution, which is characterized in that be applied to the claims 1-
The determining device of the gelation time of cross-linked polymer solution described in any one of 9, which comprises
It obtains in first cycle of operation of the determining device of the gelation time of the cross-linked polymer solution, the first pressure
The first pressure difference between sensor and the pressure data of second pressure sensor acquisition；
Wherein, each cycle of operation refers to the cross-linked polymer solution in the first piston cylinder or the second piston cylinder is complete
The operational process of the fill out sand tube is injected in portion；
It obtains in any cycle of operation after first cycle of operation, the first pressure sensor and second pressure
The second pressure difference between the pressure data of force snesor acquisition；
When the ratio of second pressure difference and first pressure difference is equal to the first preset threshold, determine that second pressure difference is corresponding
The cross-linked polymer solution gelation time determining device operation duration；
By the operation duration, it is determined as the gelation time of the cross-linked polymer solution.
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| CN203148935U (en) * | 2013-04-01 | 2013-08-21 | 中国石油化工股份有限公司 | Evaluation device of dynamic gelling mold of profile modification blocking agent |
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| CN203148935U (en) * | 2013-04-01 | 2013-08-21 | 中国石油化工股份有限公司 | Evaluation device of dynamic gelling mold of profile modification blocking agent |
| CN106501127A (en) * | 2016-10-17 | 2017-03-15 | 大港油田集团有限责任公司 | Profile control gel evaluation of dynamic method and device |
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