CN108801858B - Device and method for evaluating dynamic gelling performance of gel - Google Patents
Device and method for evaluating dynamic gelling performance of gel Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 134
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- 239000011435 rock Substances 0.000 claims abstract description 48
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- 230000000007 visual effect Effects 0.000 claims abstract description 7
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- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 239000000499 gel Substances 0.000 claims description 67
- 238000010008 shearing Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 6
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- 238000011161 development Methods 0.000 claims description 4
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- 241000251468 Actinopterygii Species 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- WYYQVWLEPYFFLP-UHFFFAOYSA-K chromium(3+);triacetate Chemical compound [Cr+3].CC([O-])=O.CC([O-])=O.CC([O-])=O WYYQVWLEPYFFLP-UHFFFAOYSA-K 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 description 1
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- 238000009472 formulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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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
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Abstract
The invention discloses a device and a method for evaluating dynamic gelling performance of gel, and belongs to the field of oilfield exploitation. The device includes: a box body provided with a visual window; a controller disposed outside the case; the motor is arranged outside the box body and is electrically connected with the controller, and the controller is used for controlling the motor to operate; the first belt pulley is connected with the motor through a coupling; the second belt pulley is connected with the first belt pulley through a transmission belt; one end of the first transmission shaft is connected with the second belt pulley, and the other end of the first transmission shaft can rotatably penetrate through the box body and is connected with the clamping piece in the box body; the test tubes are clamped by the clamping pieces, and the tube openings of the test tubes are blocked by the rubber plugs; a test piece movable up and down within each test tube. The test rock is cylinder structure, evenly is provided with a plurality of vertical through-holes on the test rock. The dynamic gelling performance of the polymer gel profile control agent can be automatically, simply, time-saving and labor-saving evaluated at different gelling time through the device.
Description
Technical Field
The invention relates to the field of oilfield exploitation, in particular to a device and a method for evaluating dynamic gelling performance of gel.
Background
Along with the continuous development of oil fields, the heterogeneity of oil reservoirs is more and more serious, so that crude oil stored in a low permeable layer is difficult to recover. The polymer gel profile control agent can be used for plugging a high permeable layer, the swept area of injected water is enlarged, and the exploitation of low permeable layer oil storage is facilitated. The polymer gel profile control agent is viscous liquid in the initial state after being configured, and is crosslinked into gel after being injected into an oil layer for 1 to 7 days, so that the gel forming performance of the polymer gel profile control agent is evaluated, and the judgment of the profile control performance is facilitated. However, in practical applications, the polymer gel profile control agent is always in a flowing state in the oil layer, so it is necessary to provide an apparatus or method for evaluating the dynamic gel forming performance of the gel.
The prior art provides an evaluation device of dynamic gelatinization performance of gel, and the device includes: the artificial rock core comprises an artificial rock core, a pressure sensor arranged on the artificial rock core, a constant flow pump used for injecting water into the artificial rock core, and a storage tank used for containing a polymer gel profile control agent. The artificial core is 5-30 meters long, the sand filling volume is 4000mL, and an injection port and an output port are formed in the artificial core so that water and a polymer gel profile control agent can conveniently circulate through the artificial core. The pressure inside the artificial core can be directly read through the pressure sensor. In the experiment, water is injected into the artificial rock core by using a advection pump, and the reading of the pressure sensor is recorded. After the preset gelling time, the polymer gel profile control agent drives the polymer gel in the storage tank to be injected into the artificial rock core through the constant-flow pump, and the reading of the pressure sensor is recorded. From the ratio between the two readings, the gelling properties of the polymer gel profile control agent in the oil layer after a predetermined gelling time can be deduced. When evaluating the dynamic gelling properties of the polymer gel profile control agent at different gelling times, the above experiment can be performed by setting a plurality of artificial cores.
The inventor finds that the prior art has at least the following problems:
when the evaluation device provided by the prior art is used for evaluating the dynamic gelling performance of the polymer gel profile control agent at different gelling times, a plurality of artificial cores need to be arranged, but each artificial core has a large volume and a complex experimental process, and the gelling state of the polymer gel profile control agent at different gelling times is difficult to accurately evaluate.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a device and a method for accurately evaluating the dynamic gelling performance of polymer gel at different gelling times. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a device for evaluating a dynamic gelling performance of a gel, where the device includes: a box body provided with a visual window; a controller disposed outside the housing; the motor is arranged outside the box body and is electrically connected with the controller, and the controller is used for controlling the motor to operate; the first belt pulley is connected with the motor through a coupling; the second belt pulley is connected with the first belt pulley through a transmission belt; the first transmission shaft is connected with the second belt pulley at one end, and can rotatably penetrate through the box body at the other end and is connected with the clamping piece in the box body; a plurality of test tubes clamped by the clamping pieces, wherein the tube orifice of each test tube is blocked by a rubber plug; a test block movable up and down within each of the test tubes; the test rock is of a cylinder structure, and a plurality of longitudinal through holes are uniformly formed in the test rock.
Specifically, preferably, the longitudinal through hole has a cylindrical structure, a square structure, or a hexagonal prism structure.
Specifically, preferably, the clamp includes: the device comprises an upper clamping plate, a lower clamping plate, two screws and nuts matched with the screws; the lower ends of the two screw rods are vertically connected with the lower clamping plate, and the upper ends of the two screw rods respectively penetrate through threaded holes formed in the upper clamping plate and are locked and fixed through the nuts; the lower ends of the test tubes and the upper ends of the rubber plugs are respectively abutted against the plate surfaces of the lower clamping plate and the upper clamping plate; the first transmission shaft is vertically connected with one of the screw rods.
Specifically, preferably, a first groove matched with the lower end of the test tube is formed in the lower clamping plate, and the lower end of the test tube is clamped into the first groove; the upper clamping plate is provided with a second groove matched with the upper end of the rubber plug, and the upper end of the rubber plug is clamped into the second groove.
Particularly, the device preferably further comprises a fixed bracket placed in the box body, and the clamping piece is rotatably arranged in the fixed bracket.
Specifically, preferably, the apparatus further comprises: the second transmission shaft is arranged opposite to the first transmission shaft; one end of the second transmission shaft is connected with the clamping piece, and the other end of the second transmission shaft can rotatably penetrate through the side wall of the fixed support.
Specifically, preferably, the box body is an incubator.
Specifically, preferably, the temperature adjustment range of the oven is: 30-200 ℃.
In a second aspect, an embodiment of the present invention further provides a method for evaluating dynamic gelling performance of a gel by using the above apparatus, where the method includes:
make the motor operation through the controller, the motor is with power transmission to first belt pulley, first belt pulley rotates to pass through driving belt with power and transmit to the second belt pulley, the second belt pulley rotates to drive the holder through first transmission shaft and rotate, and then drive and be in test tube in the holder rotates, tests the rock mass along the test tube reciprocates to the shearing environment in simulation oil reservoir.
And when the gelling time is preset, the motor is stopped by the controller, the test tube is in a vertical state, at the moment, the test rock slides downwards under the action of gravity, and the falling time of the test rock sliding to the bottom end of the test tube is recorded.
And evaluating the dynamic gelling performance of the polymer gel according to the falling time.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the device for evaluating the dynamic gelling performance of the gel, provided by the embodiment of the invention, the test tube is arranged, and the test rock is arranged in the test tube, so that an oil layer with a shearing environment is simulated. Through setting up the test rock into the cylinder structure to avoid the inner wall of fish tail test tube when sliding from top to bottom, evenly be provided with a plurality of vertical through-holes on the test rock, increased the shearing action to polymer gel profile control agent, so that the shearing environment of oil reservoir is simulated accurately, when sliding from top to bottom at the test rock in addition, polymer gel profile control agent evenly flows in or flows by vertical through-hole, can prevent that the test rock from taking place the eccentric wear. Through setting up box, controller, motor, first belt pulley, second belt pulley, holder and with the test tube setting in the holder, be convenient for automatically, simply, labour saving and time saving ground, visual control holder drive the test tube and rotate different time, and then be convenient for evaluate when different gluey time, the developments of polymer gel profile control agent become gluey performance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an apparatus for evaluating dynamic gelling performance of a gel provided in an embodiment of the present invention;
figure 2 is a top view of a test rock block provided by an embodiment of the present invention.
Wherein the reference numerals denote:
1, a box body is arranged in the box body,
2, a controller is used for controlling the operation of the device,
3, a motor is arranged on the base plate,
4 a first belt pulley is arranged on the first belt pulley,
5 a transmission belt is arranged on the upper surface of the frame,
6 a second belt pulley for the second belt pulley,
7 a clamping part is arranged on the base plate,
701, an upper clamping plate is arranged on the upper part of the device,
702 a lower clamping plate is arranged on the lower part of the frame,
the screw rod (703) is provided with a screw rod,
704 a nut is set in the nut, and,
8 a first transmission shaft is arranged on the first transmission shaft,
9 a test tube, wherein the test tube is provided with a test tube,
10 of the rubber plug is arranged on the upper surface of the rubber plug,
11 testing the piece of rock to be tested,
1101 a longitudinal through-hole, the longitudinal through-hole,
12 a support is fixed on the base plate,
13 second drive shaft.
Detailed Description
Unless defined otherwise, all technical terms used in the examples of the present invention have the same meaning as commonly understood by one of ordinary skill in the art. In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In a first aspect, an embodiment of the present invention provides an apparatus for evaluating dynamic gelling performance of a gel, as shown in fig. 1, the apparatus includes: a box body 1 provided with a visual window; a controller 2 arranged outside the box body 1; the motor 3 is arranged outside the box body 1 and is electrically connected with the controller 2, and the controller 2 is used for controlling the motor 3 to operate; a first belt pulley 4 connected with the motor 3 through a coupling; a second belt pulley 6 coupled to the first belt pulley 4 via a drive belt 5; a first transmission shaft 8, one end of which is connected with the second belt pulley 6, and the other end of which can rotatably penetrate through the box body 1 and is connected with a clamping piece 7 in the box body 1; a plurality of test tubes 9 clamped by the clamping pieces 7, wherein the tube orifice of each test tube 9 is sealed by a rubber plug 10; a test block 11 movable up and down within each test tube 9.
It should be noted that the test tube 9 contains the polymer gel profile control agent, and the test rock 11 can sink to the bottom end of the test tube 9 in the test tube 9, so that the polymer gel profile control agent is subjected to a shearing action, and the polymer gel profile control agent subjected to a shearing force in an oil layer is simulated.
The following description is given of the working principle of the apparatus provided by the embodiment of the present invention:
first, a polymer gel profile control agent for experiments is prepared, a plurality of test tubes 9 are filled with the gel profile control agent, and the tube openings of the test tubes 9 are sealed with rubber plugs 10. The test tube 9 is then mounted in the holder 7 and the entire device is assembled. When the motor 3 is operated by controlling the controller 2, the motor 3 transmits power to the first pulley 4, the first pulley 4 rotates, and the power is transmitted to the second pulley 6 through the transmission belt 5. Second belt pulley 6 rotates to give holder 7 through first transmission shaft 8 with power transmission, holder 7 drives a plurality of test tubes 9 and rotates. The test rock 11 in the test tube 9 will move up and down in the test tube 9 in order to simulate the shearing environment of the oil reservoir.
After the motor 3 runs for a preset time, the motor 3 is stopped by the controller 2, and the test tube 9 is in a vertical state. At this point, the test block 11 slides downward under gravity, recording the time for the plurality of test blocks 11 to slide to the bottom end of the test tube 9, and taking the average to obtain the average time of fall of the test block 11.
The dynamic gelling performance of the polymer gel can be evaluated according to the average falling time of the test rock 11, and the larger the average falling time is, the better the dynamic gelling performance of the polymer gel is.
The controller 2 controls the motor 3 to operate, so that a plurality of groups of experimental data can be easily obtained, and the dynamic gelling performance of the polymer gel at different gelling times can be conveniently evaluated.
The gel dynamic gelling performance evaluation device provided by the embodiment of the invention simulates an oil layer with a shearing environment by arranging the test tube 9 and arranging the test rock 11 in the test tube 9. Through setting up test rock 11 to the cylinder structure to avoid fish tail test tube 9's inner wall when sliding from top to bottom, evenly be provided with a plurality of vertical through-holes 1101 on test rock 11, increased the shearing action to polymer gel profile control agent, so that the shearing environment of oil reservoir is simulated accurately, when sliding from top to bottom at test rock 11 in addition, polymer gel profile control agent evenly flows in or by vertical through-hole outflow, can prevent that test rock 11 from taking place the eccentric wear. Through setting up box 1, controller 2, motor 3, first belt pulley 4, second belt pulley 6, holder 7 and set up test tube 9 in holder 7, be convenient for automatically, simply, labour saving and time saving ground, visual control holder 7 drive test tube 9 and rotate different time, and then be convenient for evaluate when different gelling time, the developments of polymer gel profile control agent become the gluey performance.
Specifically, the material of the test block 11 is preferably a rock mass material close to the material of the oil reservoir, and the test block 11 may be immersed in water and oil before use so as to accurately simulate the oil reservoir.
The structure of the longitudinal through hole 1101 is various, for example, the longitudinal through hole 1101 is a cylinder structure, a square structure, or a hexagonal prism structure.
Preferably, as shown in fig. 2, the longitudinal through hole 1101 is a cylindrical structure. The structure of the longitudinal through hole 1011 is arranged in this way, so that the stress on the inner wall of the longitudinal through hole 1101 is balanced, and the service life of the test rock 11 is prolonged.
The clamping piece 7 is mainly used for fixing a plurality of test tubes 9 and a rubber plug 10 for plugging the upper ends of the test tubes 9 so as to drive the test tubes 9 to rotate when the test tubes rotate. The structure of holder 7 has the multiple, is based on simple structure, under the prerequisite of easy dismouting, gives following embodiment:
as shown in fig. 1, the holder 7 includes: an upper clamping plate 701, a lower clamping plate 702, two screws 703 and nuts 704 matched with the screws 703; the lower ends of the two screws 703 are vertically connected with the lower clamp plate 702, and the upper ends of the two screws are respectively penetrated out of threaded holes formed in the upper clamp plate 701 and are locked and fixed through nuts 704; the lower ends of the test tubes 9 and the upper ends of the rubber plugs 10 are respectively abutted against the plate surfaces of the lower clamping plate 702 and the upper clamping plate 701; the first drive shaft 8 is vertically connected to one of the threaded rods 703.
Wherein, the fixed mode that sets up in holder 7 of test tube 9 and plug 10 has the multiple, for example test tube 9 and plug 10 can be fixed between punch holder 701 and lower plate 702 through the mode that bonds, and the mode that bonds is simple, and the joining force is strong. It can also be set by:
a first groove matched with the lower end of the test tube 9 is formed in the lower clamping plate 702, and the lower end of the test tube 9 is clamped into the first groove; the upper clamping plate 701 is provided with a second groove matched with the upper end of the rubber plug 10, and the upper end of the rubber plug 10 is clamped in the second groove.
Set up first recess and second recess and avoid rotating the in-process at holder 7, test tube 9 and plug 10 drop, the dismouting of the test tube 9 of being convenient for, plug 10 and lower plate 702, punch holder 701.
As shown in fig. 1, the apparatus according to the embodiment of the present invention further includes a fixing bracket 12 disposed in the housing 1, and the holder 7 is rotatably disposed in the fixing bracket 12.
Set up fixed bolster 12 and all play the guard action to holder 7 and box 1, further carry on spacingly to first transmission shaft 8, avoid first transmission shaft 8 to rock from top to bottom.
The fixing bracket 12 has various structures, and the fixing bracket 12 having the following structure is preferable:
the fixing bracket 12 includes: four square plates; the four square plates are sequentially connected end to form a square frame structure; the first transmission shaft 8 passes through one side plate of the fixed bracket 12 and is connected with the clamping member 7.
The fixing bracket 12 having the above structure is easily installed and can be stably placed in the case 1.
Further, in order to facilitate the rotatable arrangement of the clamping member 7 in the fixing bracket 12, as shown in fig. 1, the apparatus provided by the embodiment of the present invention further includes: a second transmission shaft 13 disposed opposite to the first transmission shaft 8; one end of the second transmission shaft 13 is connected with the clamping piece 7, and the other end thereof rotatably penetrates through the side wall of the fixed bracket 12.
Specifically, the first transmission shaft 8 and the clamping piece 7 can be in key connection with the second belt pulley 6, and the second transmission shaft 13 and the clamping piece 7 can be in key connection with each other, so that the disassembly and assembly can be realized.
A key lug is arranged on the first transmission shaft 8, and key grooves matched with the key lug are arranged on the hole wall of the shaft hole of the second belt pulley 6 and the hole wall of the connecting hole on the side wall of the clamping piece 7. Similarly, the second transmission shaft 13 is also provided with a key protrusion, and the hole wall of the side wall connecting hole of the clamping piece 7 is provided with a key groove matched with the key protrusion.
Through holes for enabling the first transmission shaft 8 to pass through are formed in the box body 1 and the fixing support 12, and through holes for enabling the second transmission shaft 13 to pass through are formed in the fixing support 12. Because the motor 3 can be placed on the top wall of the box body 1, the first belt pulley 4 connected with the motor 3 through the coupler suspends the second belt pulley 6 outside the box body 1 through the transmission belt 5. Therefore, the second pulley 6 inevitably vibrates during rotation, which causes rolling friction between the first transmission shaft 8 and the through hole through which it passes, and between the second transmission shaft 13 and the through hole provided in the fixed bracket 12. In order to reduce the friction resistance and prolong the service life of the box body 1 and the fixed bracket 12, wear-resistant coatings are arranged on the hole walls of the through holes through which the first transmission shaft 8 and the second transmission shaft 13 penetrate.
Specifically, the wear resistant coating comprises: vanadium (V) carbide2C) Ceramic, heptavanadium carbide (V)8C7) The coating and the through hole are metallurgically bonded, the bonding force is strong, ceramic particles are prevented from falling off, and the friction coefficient of the inner wall of the through hole is reduced.
The wear-resistant coating can also have a density of 5.0-6.0g/cm3The Vanadium Nitride (VN) wear-resistant coating has high hardness, low wear rate and low friction coefficient.
Further, in order to avoid the first transmission shaft 8 and the second pulley 6 from shaking, the apparatus provided in the embodiment of the present invention further includes: the support is used for limiting the second belt pulley 6, the second belt pulley 6 is rotatably arranged on the support, and the lower end of the support is placed on the ground.
Specifically, the box body 1 is a thermostat so as to control the temperature environment where the test tube 9 is located, and further facilitate simulation of the temperature environment of the oil layer.
The temperature adjusting range of the constant temperature box is as follows: the temperature may be, for example, 30 ℃ to 200 ℃, 50 ℃, 70 ℃, 90 ℃, 110 ℃, 130 ℃, 150 ℃, 170 ℃, 200 ℃ or the like. The temperature adjusting range of the thermostat is set so as to facilitate the simulation of an environment having the same temperature as the temperature of the oil layer (the temperature of the oil layer is generally 40-150 ℃).
Specifically, the motor 3 is provided with a signal receiving module and a control module; the controller 2 is a computer, and the controller 2, the signal receiving module and the control module are electrically connected in sequence.
The computer is provided with software for controlling the motor 3 for easy control by the operator. The motor 3 can be given control instructions of starting, stopping and different rotating speeds through a computer, a signal receiving module on the motor 3 receives and processes the corresponding control instructions, then the control signals are transmitted to the control module, and the control module sends the corresponding control instructions to a driving part of the motor 3 according to the control signals, so that the motor 3 can make corresponding actions.
In a second aspect, an embodiment of the present invention further provides a method for evaluating dynamic gelling performance of a gel by using the apparatus, where the method includes:
make motor 3 operation through controller 2, motor 3 is with power transmission to first belt pulley 4, and first belt pulley 4 rotates to transmit power to second belt pulley 6 through driving belt 5, and second belt pulley 6 rotates, and drives holder 7 through first transmission shaft 8 and rotates, and then drives the test tube 9 rotation in holder 7, and test rock 11 reciprocates along test tube 9, with the shearing environment of simulation oil reservoir.
When the gelling time is preset, the motor 3 is stopped by the controller 2, the test tube 9 is in a vertical state, at the moment, the test rock 11 slides downwards under the action of gravity, and the falling time of the test rock 11 sliding to the bottom end of the test tube 9 is recorded.
The dynamic gelling properties of the polymer gel were evaluated according to the drop time.
The method can automatically, simply, time-saving, labor-saving and visually control the clamping piece 7 to drive the test tube 9 to rotate for different preset gelling times, and further facilitates evaluation of dynamic gelling performance of the simulated polymer gel profile control agent in an oil layer during different preset gelling times.
The present invention will be further described below by way of specific examples.
In the following examples, those whose operations are not subject to the conditions indicated, are carried out according to the conventional conditions or conditions recommended by the manufacturer. The raw materials are conventional products which can be obtained commercially by manufacturers and specifications.
Example 1
The embodiment provides a device for evaluating dynamic gelling performance of gel: as shown in fig. 1, the apparatus comprises: the device comprises a box body 1 (a thermostat), a controller 2, a motor 3, a first belt pulley 4, a transmission belt 5, a second belt pulley 6, a clamping piece 7, a first transmission shaft 8, a plurality of test tubes 9, a plurality of rubber plugs 10, a plurality of test rock blocks 11, a fixed support 12 and a second transmission shaft 13. Wherein, be provided with the visual window on the thermostated container, controller 2 is located the thermostated container outside, and motor 3 places on the roof of thermostated container to be connected with controller 2 electricity, first belt pulley 4 and motor 3's coupling joint, through drive belt 5 hookup between first belt pulley 4 and the second belt pulley 6. One end of the first transmission shaft 8 is connected with the second belt pulley 6, and the other end of the first transmission shaft rotatably penetrates through the constant temperature box and the fixed support 12 in sequence and is connected with the side wall of the clamping piece 7. The second transmission shaft 13 is disposed opposite to the first transmission shaft 8, and has one end connected to a sidewall of the clamping member 7 and the other end rotatably penetrating through a sidewall of the fixing bracket 12. A plurality of test tubes 9 are held in holders 7, the mouth of each test tube 9 being closed off by a plug 10. The test rock 11 is located up and down in the test tube 9.
The temperature adjusting range of the constant temperature box is as follows: 30-200 ℃, and the volume of the inner cavity is as follows: 1000mm is 800mm is 500mm, and the side wall of the constant temperature box is provided with a through hole with the diameter of 10.5 mm. The outer diameter of the first transmission shaft 8 is 10 mm. The rotation speed range of the motor 1 is as follows: 0-100 r/min. The outer diameter of the first belt pulley 4 is 50mm, and the outer diameter of the second belt pulley 6 is 200 mm. The diameter of the through holes on the two side walls of the fixing support 12 is 10.5mm, the specifications of the upper clamping plate 701 and the lower clamping plate 702 are 400mm multiplied by 50mm, the height of the screw rod 703 is 300mm, and the outer diameter is 20 mm. The test tube 9 has a volume of 150mL and an outer diameter of 30mm, and 8 test tubes 9 are fixed in the holder 7. The outer diameter of the test block 11 is 25 mm.
Example 2
The device provided in example 1 was used to evaluate the dynamic gelling properties of the gel, the evaluation method specifically being as follows:
firstly, 800mL of a mixed gel solution of 0.4 mass percent polyacrylamide (molecular weight 2000 ten thousand and hydrolysis degree 18%) and chromium acetate is prepared, the mixed gel solution is respectively placed in 8 test tubes filled with test rock blocks 11, the tube openings are plugged by rubber 10, and the whole device is installed.
Then the power is switched on, the temperature of the thermostat is set to 50 ℃, and the rotation speed and the running time of the motor 3 are set. The rotating speed of the motor 3 is deduced according to the experimental result of the static gelling time and the gelling strength, and the relationship between the rotating speed of the motor 3 and the experimental operation time can be set according to the formula (1):
S＝-0.0047D+Vfirst stage(1)
Wherein S is the rotating speed of the motor 3 and the unit is r/min; d is the running time of the computer after the experiment begins, and the unit is min; vFirst stageIs the initial speed of the motor 3, r/min.
The rotation speed of the motor 3 is specifically set to be 15r/min (the time taken for each rotation of the default motor 3 is just the falling time of the test rock 11 in the initially prepared gel solution, namely 4s), and the rotation speed of the motor 3 is gradually reduced along with the increase of the experimental running time D. At 3 operation in-process of motor, motor 3 transmits power to first belt pulley 4, and first belt pulley 4 rotates to pass through driving belt 5 with power and transmit to second belt pulley 6, and second belt pulley 6 rotates, and drives holder 7 through first transmission shaft 8 and rotate, and then drives the test tube 9 rotation in holder 7, and test rock 11 reciprocates along test tube 9, with the shearing environment of simulation oil reservoir. After running of the motor 3 for 2127min, the polymer gel profile control agent is dynamically gelatinized, the motor 3 is stopped by the controller 2, the test tube 9 is in a vertical state, at the moment, the test rock 11 slides downwards under the action of gravity, and the falling time of the test rock 11 sliding to the bottom end of the test tube 9 is recorded as 12 s.
From the above falling time relationship, equation (2) can be derived:
Tgelatinizing＝3TFirst stage(2)
TGelatinizingWhen the polymer gel is dynamically gelled, testing the falling time of the rock block 11, wherein the unit is s; t isFirst stageThe dropping time of the rock mass 11 in s is tested for the initial state of the gel solution formulation.
Namely, the present embodiment can provide: the polymer gel profile control agent gels dynamically when the drop time of test block 11 in test tube 9 is more than 3 times its drop time in the initially formulated gel solution.
Example 3
The dynamic gelling performance of the gel was evaluated using the apparatus provided in example 1, which differs from example 2 in that:
polymer gel solution: 800mL of a mixed gel solution of 0.3 mass percent of polyacrylamide (molecular weight of 2500 ten thousand and hydrolysis degree of 18%) and 0.4 mass percent of chromium acetate is prepared.
Specifically, the rotation speed of the motor 3 is set to 20r/min (T)First stage3s) to give a polymer gel having a dynamic gelling time of 3126min, at which point the test piece 11 falls in the test tube 9 for a time of 9s (T)Gelatinizing)。
The present embodiment also shows that: the polymer gel profile control agent gels dynamically when the drop time of test block 11 in test tube 9 is more than 3 times its drop time in the initially formulated gel solution.
As can be seen from example 1 and example 2, the device provided in the embodiment of the present invention can be used for evaluating the dynamic gelling performance of gels, and can facilitate the estimation of the dynamic gelling time of different polymer gel profile control agents.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a gel developments gelatinization performance evaluation device which characterized in that, the device includes: a box body (1) provided with a visual window;
the controller (2) is arranged outside the box body (1);
the motor (3) is arranged outside the box body (1) and is electrically connected with the controller (2), and the controller (2) is used for controlling the motor (3) to operate;
the first belt pulley (4) is connected with the motor (3) through a coupling;
a second belt pulley (6) coupled to the first belt pulley (4) via a drive belt (5);
a first transmission shaft (8) with one end connected with the second belt pulley (6) and the other end rotatably penetrating through the box body (1) and connected with a clamping piece (7) in the box body (1);
a plurality of test tubes (9) clamped by the clamping pieces (7), wherein the tube orifice of each test tube (9) is blocked by a rubber plug (10);
a test block (11) movable up and down within each test tube (9);
the test rock block (11) is of a cylinder structure, and a plurality of longitudinal through holes (1101) are uniformly formed in the test rock block (11).
2. The device according to claim 1, characterized in that the longitudinal through hole (1101) is of cylindrical structure.
3. Device according to claim 1, characterized in that said clamp (7) comprises: the device comprises an upper clamping plate (701), a lower clamping plate (702), two screw rods (703) and nuts (704) matched with the screw rods (703);
the lower ends of the two screws (703) are vertically connected with the lower clamping plate (702), and the upper ends of the two screws respectively penetrate through threaded holes formed in the upper clamping plate (701) and are locked and fixed through the nuts (704);
the lower ends of the test tubes (9) and the upper ends of the rubber plugs (10) are respectively abutted against the plate surfaces of the lower clamping plate (702) and the upper clamping plate (701);
the first transmission shaft (8) is vertically connected with one of the screw rods (703).
4. The device according to claim 3, characterized in that the lower clamping plate (702) is provided with a first groove matched with the lower end of the test tube (9), and the lower end of the test tube (9) is clamped in the first groove;
the upper clamping plate (701) is provided with a second groove matched with the upper end of the rubber plug (10), and the upper end of the rubber plug (10) is clamped into the second groove.
5. The device according to claim 1, characterized in that it further comprises a fixed support (12) placed inside the tank (1), the clamp (7) being rotatably arranged inside the fixed support (12).
6. The apparatus of claim 5, further comprising: a second transmission shaft (13) arranged opposite to the first transmission shaft (8);
one end of the second transmission shaft (13) is connected with the clamping piece (7), and the other end of the second transmission shaft can rotatably penetrate through the side wall of the fixed support (12).
7. Device according to claim 1, characterized in that the cabinet (1) is an incubator.
8. The apparatus according to claim 7, wherein the temperature adjustment range of said oven is: 30-200 ℃.
9. Method for evaluating the dynamic gelling properties of gels using the device according to any one of claims 1 to 8, characterized in that it comprises:
the test device comprises a motor (3) and a controller (2), wherein the motor (3) transmits power to a first belt pulley (4), the first belt pulley (4) rotates and transmits the power to a second belt pulley (6) through a transmission belt (5), the second belt pulley (6) rotates and drives a clamping piece (7) to rotate through a first transmission shaft (8), so that a test tube (9) in the clamping piece (7) is driven to rotate, and a test rock block (11) moves up and down along the test tube (9) to simulate the shearing environment of an oil layer;
when the gelling time is preset, the motor (3) is stopped by the controller (2), the test tube (9) is in a vertical state, at the moment, the test rock block (11) slides downwards under the action of gravity, and the falling time of the test rock block (11) sliding to the bottom end of the test tube (9) is recorded;
and evaluating the dynamic gelling performance of the polymer gel according to the falling time.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5315864A (en) * | 1993-04-06 | 1994-05-31 | Halliburton Company | Start/stop method to determine static gel strength |
| CN101660991A (en) * | 2009-07-31 | 2010-03-03 | 肇庆理士电源技术有限公司 | Method and device for testing gelation time of electrolyte colloid |
| CN202433279U (en) * | 2011-12-27 | 2012-09-12 | 河南三丽电源股份有限公司 | Detection device for gel time of colloid electrolyte |
| CN104314514A (en) * | 2014-10-10 | 2015-01-28 | 中国石油大学(华东) | Visualization experiment device and method for profile control performance evaluation of weak gel of fractured reservoir |
| CN204461943U (en) * | 2015-01-30 | 2015-07-08 | 中国石油天然气股份有限公司 | Gel strength testing device |
| CN205670108U (en) * | 2016-06-12 | 2016-11-02 | 西南石油大学 | A kind of HTHP gravity sensing formula falling ball method liquid viscosity tester |
| 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 |
-
2017
- 2017-04-28 CN CN201710293281.8A patent/CN108801858B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5315864A (en) * | 1993-04-06 | 1994-05-31 | Halliburton Company | Start/stop method to determine static gel strength |
| CN101660991A (en) * | 2009-07-31 | 2010-03-03 | 肇庆理士电源技术有限公司 | Method and device for testing gelation time of electrolyte colloid |
| CN202433279U (en) * | 2011-12-27 | 2012-09-12 | 河南三丽电源股份有限公司 | Detection device for gel time of colloid electrolyte |
| CN104314514A (en) * | 2014-10-10 | 2015-01-28 | 中国石油大学(华东) | Visualization experiment device and method for profile control performance evaluation of weak gel of fractured reservoir |
| CN204461943U (en) * | 2015-01-30 | 2015-07-08 | 中国石油天然气股份有限公司 | Gel strength testing device |
| CN205670108U (en) * | 2016-06-12 | 2016-11-02 | 西南石油大学 | A kind of HTHP gravity sensing formula falling ball method liquid viscosity tester |
| 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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