CN103161452A - Two-dimensional microscopic visual simulation experiment device and using method thereof - Google Patents
Two-dimensional microscopic visual simulation experiment device and using method thereof Download PDFInfo
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- CN103161452A CN103161452A CN2013100802366A CN201310080236A CN103161452A CN 103161452 A CN103161452 A CN 103161452A CN 2013100802366 A CN2013100802366 A CN 2013100802366A CN 201310080236 A CN201310080236 A CN 201310080236A CN 103161452 A CN103161452 A CN 103161452A
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- 238000004088 simulation Methods 0.000 title claims abstract description 130
- 230000000007 visual effect Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
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- 238000002474 experimental method Methods 0.000 claims abstract description 89
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- 230000008569 process Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 32
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
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- 238000003384 imaging method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 238000000518 rheometry Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 38
- 230000007246 mechanism Effects 0.000 description 11
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- 238000009826 distribution Methods 0.000 description 3
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Abstract
The invention discloses a two-dimensional microscopic visual simulation experiment device and a using method thereof, wherein the two-dimensional microscopic visual simulation experiment device comprises: the first bolt vertically slides in the first groove and fixes the microscope beam to change the inclination angle of the microscope, and the microscope displays and records the flowing process of the fluid in the microscopic simulation transparent pore model; the displacement system is characterized in that a microscopic simulation transparent pore model is fixed in a high-temperature and high-pressure microscopic experiment holder cavity in a sealing mode in the horizontal direction, the model is sealed up and down, an inlet and an outlet are arranged along the diagonal line, and a sealing channel is formed between the inlet and the outlet of the high-temperature and high-pressure microscopic experiment holder; and the model inclination angle control system is characterized in that a high-temperature and high-pressure microscopic experiment holder is fixed in a model semicircular bracket, the model semicircular bracket is fixed on a model base through a second bolt capable of sliding along a second groove, and a semicircular dial disc is fixed on the model base through a third bolt capable of sliding along a third groove. The simulation experiment of the vertical seepage and the plane seepage at any inclination angle of the fluid in the microscopic simulation transparent pore model can be completed.
Description
Technical field
The present invention relates to oil field development experimental technique field, relate in particular to two-dimentional microcosmic visual Simulation experimental facilities and using method thereof.
Background technology
The experiment of two dimension microcosmic visual Simulation is the fluid microscopic seepage feature in the oil reservoir porous media under the different development schemes of accurate Characterization, discloses the important technical of the microcosmic oil drive mechanism of different development schemes.Along with injecting fluid become increasingly complex (as: steam, chemical agent, condensation gas, non-condensation gas etc.), and the oil reservoir object that injects becomes increasingly complex, experiment has proposed Secretary for the two-dimensional visualization microcosmic Simulation, comprising: vertical seepage flow characteristics and the mechanism of oil displacement that 1) can characterize the transparent pore model inner fluid of microscopic simulation; 2) can characterize plane seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of arbitrary angle microscopic simulation.
Patent CN201273903 has proposed a kind of clamping device for high temperature high pressure microscopic experiment, patent CN200985788 has proposed a kind of holder for high-temperature high-pressure glass microscopic model, the advantage of these two patents all is to utilize under long period, elevated pressures and higher temperature the transparent pore model of microscopic simulation to carry out two-dimentional microcosmic visualized experiment, and utilizes microscope, camera, display and CD writer to carry out image/video collection and post-processed analysis to the microscopic seepage process.But the weak point of patent CN201273903 is, because clamping device for high temperature high pressure microscopic experiment is fixed on Microscope base, therefore clamper does not possess the spinfunction by arbitrary angle, can only be used for the plane seepage simulation test in the transparent pore model of horizontal microscopic simulation; And the weak point of patent CN200985788 is, the model bed body base of clamper and the structural relation between other parts of clamper only have been described, whether undeclared clamper possesses the arbitrary angle spinfunction and realize that the parts of this function form.In the technical scheme of above two patents all which kind of technological means of unspecified employing realize the vertical seepage flow of oil reservoir inner fluid and the plane seepage simulation test of arbitrary angle oil reservoir inner fluid.
Summary of the invention
The embodiment of the present invention provides a kind of two-dimentional microcosmic visual Simulation experimental facilities, in order to characterize vertical seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of microscopic simulation, and plane seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of arbitrary angle microscopic simulation, this device comprises:
Imaging system, displacement system and model tilt angle control; Wherein:
Imaging system comprises: microscope 1, LED intense light source 3, the first bolt 7, microscope crossbeam 8, column 9, the first groove 10, mobile platform 11 and computer 16; The displacement system comprises: clamping device for high temperature high pressure microscopic experiment 2, back-pressure valve 17, displacement pump 18 and manual pump 19; The model tilt angle control comprises: model semi-circular bracket 4, fan dial 5, model base 6, the second bolt 12, the 3rd bolt 13, the second groove 14, the 3rd groove 15, ball bearing 20;
Microscope 1 is fixed on microscope crossbeam 8, and microscope crossbeam 8 is fixed on column 9 by first bolt 7 that can slide in the first groove 10; Microscope 1 is connected by data wire with computer 16; Column 9 is vertically fixed on mobile platform 11; The first bolt 7 is by the inclination angle that slides up and down in the first groove 10 and fixedly microscope crossbeam 8 changes microscope 1; Microscope 1 is positioned at the first side of clamping device for high temperature high pressure microscopic experiment 2, is used for showing and shooting with video-corder the flow process of the transparent pore model inner fluid of the interior microscopic simulation of clamping device for high temperature high pressure microscopic experiment 2; LED intense light source 3 is positioned at the second side of clamping device for high temperature high pressure microscopic experiment 2, and being used for provides light source to the transparent pore model of microscopic simulation; Computer 16 is used for pressure and the data on flows of image, video and displacement pump 18, manual pump 19 and back-pressure valve 17 that storage microscope 1 photographs;
Back-pressure valve 17, displacement pump 18 and manual pump 19 are connected to clamping device for high temperature high pressure microscopic experiment 2 by pipeline; Clamping device for high temperature high pressure microscopic experiment 2 adopts electrical heating to keep constant temperature, and in cavity, horizontal direction seals the fixedly transparent pore model of microscopic simulation; The transparent pore model of microscopic simulation is up and down with the sealing of high pressure tempering clear glass, along diagonal inlet porting and outlet, with the entrance and exit formation seal channel of clamping device for high temperature high pressure microscopic experiment 2; Displacement pump 18 is used for injecting displacing agent to the transparent pore model of microscopic simulation; Manual pump 19 is used to clamping device for high temperature high pressure microscopic experiment 2 that confined pressure is provided; Back-pressure valve 17 is used for controlling the back pressure of the transparent pore model of microscopic simulation;
Clamping device for high temperature high pressure microscopic experiment 2 and LED intense light source 3 are fixed in model semi-circular bracket 4; The first side of model semi-circular bracket 4 is established semicircular the second groove 14, and the first side of fan dial 5 is established semicircular the 3rd groove 15, and the first side of model semi-circular bracket 4 and the first side of fan dial 5 are homonymy; In the second groove 14, the left and right bilateral symmetry is provided with left and right bilateral symmetry in two second bolt 12, the three grooves 15 that can slide along the second groove 14 and is provided with two the 3rd bolts 13 that can slide along the 3rd groove 15; Model semi-circular bracket 4 is fixed on model base 6 by the second bolt 12, and fan dial 5 is fixed on model base 6 by the 3rd bolt 13; Model semi-circular bracket 4 and fan dial 5 are coaxial semicircle axis body, are connected by ball bearing 20 in the gap that contacts between model semi-circular bracket 4 and fan dial 5.
In an embodiment, during model semi-circular bracket 4 half-twist, the transparent pore model of microscopic simulation in clamping device for high temperature high pressure microscopic experiment 2 is for standing vertically.
In an embodiment, the second side of model semi-circular bracket 4 is provided with the zero graduation line, the position during with record and calibrating patterns semi-circular bracket 4 horizontal positioned.
In an embodiment, the even graduation mark that distributes between 0 °～90 ° in the second two ends, side left and right of fan dial 5, be used to indicate in model semi-circular bracket 4 rotary courses, the scale of the fan dial 5 that the zero graduation line of model semi-circular bracket 4 points to is the inclination angle of clamping device for high temperature high pressure microscopic experiment 2 rotations.
The embodiment of the present invention also provides a kind of using method of above-mentioned two-dimentional microcosmic visual Simulation experimental facilities, in order to characterize vertical seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of microscopic simulation, and plane seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of arbitrary angle microscopic simulation, the method comprises:
Unclamp the second bolt 12, be rotated counterclockwise model semi-circular bracket 4 until zero graduation line on model semi-circular bracket 4 points to oil reservoir actual inclination angle behind the graduation mark position of fan dial 5, tighten the second bolt 12 model semi-circular bracket 4 is fixed on model base 6;
Unclamp the first bolt 7, along the first groove 10 down sliding microscope crossbeams 8, until the object lens of microscope 1 when parallel with the high-pressure glass form at clamping device for high temperature high pressure microscopic experiment 2 tops, tightened the first bolt 7 microscope crossbeam 8 is fixed on column 9;
Set up the confined pressure of the transparent pore model of microscopic simulation and the transparent pore model of microscopic simulation is carried out hyperthermic treatment;
Utilize displacement pump 18 that the formation water for preparing is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2; Simultaneously, open LED intense light source 3 and regulate its brightness, until observe the Fluid Flow in A in the transparent pore model of microscopic simulation in the object lens of microscope 1;
Utilize displacement pump 18 that the formation oil for preparing is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2, until export moisturely when being 0%, stop injecting, set up the irreducible water saturation of the transparent pore model of microscopic simulation;
Utilize displacement pump 18 with the entrance injection microscopic simulation transparent pore model of nitrogen from clamping device for high temperature high pressure microscopic experiment 2, utilize rheology characteristic and the displacement of reservoir oil feature of nitrogen bubble in the microscope 1 transparent pore model of Continuous Observation microscopic simulation, and with computer 16 continuously recordings.
In an embodiment, set up the confined pressure of the transparent pore model of microscopic simulation, comprising:
Utilize manual pump 19 to inject the ethylene glycol of the high grade of transparency in the clamping device for high temperature high pressure microscopic experiment 2 that is sealed with the transparent pore model of microscopic simulation, injection rate 3ml/min until pressure reaches 8.5MPa, sets up the model confined pressure.
In an embodiment, the transparent pore model of microscopic simulation is carried out hyperthermic treatment, comprising:
Utilize the electric heating cover of clamping device for high temperature high pressure microscopic experiment 2, clamping device for high temperature high pressure microscopic experiment 2 is heated to 45 ℃ of predetermined temperatures.
In an embodiment, when utilizing displacement pump 18 that the formation water for preparing and formation oil are injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2, injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 is controlled at 7.7MPa.
In an embodiment, when utilizing displacement pump 18 that nitrogen is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2, injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 is controlled at 7.7MPa, injection rate 0.05ml/min.
In an embodiment, during model semi-circular bracket 4 half-twist, by top entrance injection, the outlet at bottom extraction from the transparent pore model of microscopic simulation, the vertical seepage flow characteristics of the transparent pore model inner fluid of simulation microscopic simulation.
The two-dimentional microcosmic visual Simulation experimental facilities of the embodiment of the present invention can be completed the vertical Seepage Experiment that imitates the transparent pore model inner fluid of microscopic simulation under the stratum high-temperature condition of high voltage, and the plane Seepage Experiment of the transparent pore model inner fluid of arbitrary angle microscopic simulation; Can be used for characterizing vertical seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of microscopic simulation, and plane seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of arbitrary angle microscopic simulation.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, during the below will describe embodiment, the accompanying drawing of required use is done to introduce simply, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.In the accompanying drawings:
Fig. 1 is the structural representation of two-dimentional microcosmic visual Simulation experimental facilities in the embodiment of the present invention;
Fig. 2 is the structural representation of the instantiation of two-dimentional microcosmic visual Simulation experimental facilities in the embodiment of the present invention;
Fig. 3 is that in the embodiment of the present invention, two-dimentional microcosmic visual Simulation experimental facilities simulated oil inclination layer is 7 ° of structural representations under condition.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention is clearer, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, illustrative examples of the present invention and explanation thereof are used for explanation the present invention, but not as a limitation of the invention.
Can't complete the technical problem of the plane seepage simulation test of the vertical seepage flow of the transparent pore model inner fluid of microscopic simulation and the transparent pore model inner fluid of arbitrary angle microscopic simulation in order to solve existing apparatus, the embodiment of the present invention provides a kind of two-dimentional microcosmic visual Simulation experimental facilities and using method thereof.
Fig. 1 is the structural representation of two-dimentional microcosmic visual Simulation experimental facilities in the embodiment of the present invention.As shown in Figure 1, in the embodiment of the present invention, two-dimentional microcosmic visual Simulation experimental facilities can comprise:
Imaging system, displacement system and model tilt angle control; Wherein:
Imaging system comprises: microscope 1, LED(Light Emitting Diode, light emitting diode) intense light source 3, the first bolt 7, microscope crossbeam 8, column 9, the first groove 10, mobile platform 11 and computer 16; The displacement system comprises: clamping device for high temperature high pressure microscopic experiment 2, back-pressure valve 17, displacement pump 18 and manual pump 19; The model tilt angle control comprises: model semi-circular bracket 4, fan dial 5, model base 6, the second bolt 12, the 3rd bolt 13, the second groove 14, the 3rd groove 15, ball bearing 20;
Microscope 1 is fixed on microscope crossbeam 8, microscope crossbeam 8 by in the first groove 10 slidably the first bolt 7 be fixed on column 9; Microscope 1 is connected by data wire with computer 16; Column 9 is vertically fixed on mobile platform 11; The first bolt 7 can be along the angle of slope of arbitrarily angled change microscope 1 by sliding up and down in the first groove 10 and fixing microscope crossbeam 8; Microscope 1 is positioned at the first side of clamping device for high temperature high pressure microscopic experiment 2, is used for showing and shooting with video-corder the flow process of the transparent pore model inner fluid of the interior microscopic simulation of clamping device for high temperature high pressure microscopic experiment 2; LED intense light source 3 is located at the second side of clamping device for high temperature high pressure microscopic experiment 2, and being used for provides light source to the transparent pore model of microscopic simulation; Computer 16 is used for pressure, the data on flows of image, video and displacement pump 18, manual pump 19 and back-pressure valve 17 that storage microscope 1 photographs;
Back-pressure valve 17, displacement pump 18 and manual pump 19 are connected to clamping device for high temperature high pressure microscopic experiment 2 by pipeline, clamping device for high temperature high pressure microscopic experiment 2 adopts electrical heating to keep constant temperature, in clamping device for high temperature high pressure microscopic experiment 2 cavitys, the horizontal direction sealing is fixed with the transparent pore model of microscopic simulation, the transparent pore model of microscopic simulation is up and down with the sealing of high pressure tempering clear glass, the transparent pore model of microscopic simulation is along diagonal inlet porting and outlet, and forms seal channel with the entrance and exit of clamping device for high temperature high pressure microscopic experiment 2; Displacement pump 18 is used for injecting displacing agent to the transparent pore model of microscopic simulation; Manual pump 19 is used to clamping device for high temperature high pressure microscopic experiment that confined pressure is provided; Back-pressure valve 17 is used for controlling the back pressure of the transparent pore model of microscopic simulation;
Clamping device for high temperature high pressure microscopic experiment 2 and LED intense light source 3 are fixed in model semi-circular bracket 4; The first side of model semi-circular bracket 4 is established semicircular the second groove 14, and the first side of fan dial 5 is established semicircular the 3rd groove 15, and the first side of model semi-circular bracket 4 and the first side of fan dial 5 are homonymy; In the second groove 14 of model semi-circular bracket 4, two of left and right bilateral symmetry distributions can be along the second bolt 12 of the second groove 14 slips, and in the 3rd groove 15 of fan dial 5, two of left and right bilateral symmetry distributions can be along the 3rd bolt 13 of the 3rd groove 15 slips; Model semi-circular bracket 4 is fixed on model base 6 by the second bolt 12 in the second groove 14, and fan dial 5 is fixed on model base 6 by the 3rd bolt 13 in the 3rd groove 15; Model semi-circular bracket 4 and fan dial 5 are coaxial semicircle axis body, are connected by ball bearing 20 in the gap that contacts between model semi-circular bracket 4 and fan dial 5.
During concrete enforcement, the second side of model semi-circular bracket 4 can be provided with the zero graduation line, the position during with record and calibrating patterns semi-circular bracket 4 horizontal positioned.
During concrete enforcement, the second two ends, side left and right of fan dial 5 graduation mark between 0 °～90 ° that can evenly distribute, be used to indicate in model semi-circular bracket 4 rotary courses, the scale of the fan dial 5 that the zero graduation line of model semi-circular bracket 4 points to is the inclination angle of clamping device for high temperature high pressure microscopic experiment 2 rotations.
Fig. 2 is the structural representation of the instantiation of two-dimentional microcosmic visual Simulation experimental facilities in the embodiment of the present invention.Figure 2 illustrates the zero graduation line of model semi-circular bracket 4 second sides, and the graduation mark between equally distributed 0 °～90 ° of fan dial 5 second two ends, side left and right.
During concrete enforcement, during model semi-circular bracket 4 half-twist, the transparent pore model of microscopic simulation in clamping device for high temperature high pressure microscopic experiment 2 is for standing vertically, by top entrance injection, the outlet at bottom extraction from the transparent pore model of microscopic simulation, can simulate the vertical seepage flow characteristics of the transparent pore model inner fluid of microscopic simulation.
In the embodiment of the present invention, the using method of two-dimentional microcosmic visual Simulation experimental facilities can comprise:
1, the model inclination angle is set:
Unclamp the second bolt 12, be rotated counterclockwise model semi-circular bracket 4 until zero graduation line on model semi-circular bracket 4 points to oil reservoir actual inclination angle behind the graduation mark position of fan dial 5, tighten the second bolt 12 model semi-circular bracket 4 is fixed on model base 6;
2, the microscope inclination angle is set:
Unclamp the first bolt 7, along the first groove 10 down sliding microscope crossbeams 8, until the object lens of microscope 1 when parallel with the high-pressure glass form at clamping device for high temperature high pressure microscopic experiment 2 tops, tightened the first bolt 7 microscope crossbeam 8 is fixed on column 9;
3, set up model confined pressure and the intensification of control model:
Set up the confined pressure of the transparent pore model of microscopic simulation and the transparent pore model of microscopic simulation is carried out hyperthermic treatment; Wherein, set up the confined pressure of the transparent pore model of microscopic simulation, for example can comprise: utilize manual pump 19 to inject the ethylene glycol of the high grade of transparency in the clamping device for high temperature high pressure microscopic experiment 2 that is sealed with the transparent pore model of microscopic simulation, injection rate 3ml/min, until pressure reaches 8.5MPa, thereby set up the model confined pressure; The transparent pore model of microscopic simulation is carried out hyperthermic treatment, for example can comprise: utilize the electric heating cover of clamping device for high temperature high pressure microscopic experiment 2, clamping device for high temperature high pressure microscopic experiment 2 is heated to 45 ℃ of predetermined temperatures; The injected material that relates in precedent, injection rate, pressure, predetermined temperature can be adjusted according to the actual requirements;
4, saturation water is processed:
Utilize displacement pump 18 that the formation water for preparing is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2; Simultaneously, open LED intense light source 3 and regulate its brightness, until observe the Fluid Flow in A in the transparent pore model of microscopic simulation in the object lens of microscope 1; Wherein, the formation water injection pressure can be 8MPa, and the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 can be controlled at 7.7MPa; This injection pressure, outlet back pressure can be adjusted according to the actual requirements;
5, saturated oils is processed:
Utilize displacement pump 18 that the formation oil for preparing is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2, until export moisturely when being 0%, stop injecting, set up the irreducible water saturation of the transparent pore model of microscopic simulation; Wherein, the formation oil injection pressure can be 8MPa, and the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 can be controlled at 7.7MPa; This injection pressure, outlet back pressure can be adjusted according to the actual requirements;
6, the nitrogen displacement of reservoir oil:
Utilize displacement pump 18 with the entrance injection microscopic simulation transparent pore model of nitrogen from clamping device for high temperature high pressure microscopic experiment 2, utilize rheology characteristic and the displacement of reservoir oil feature of nitrogen bubble in the microscope 1 transparent pore model of Continuous Observation microscopic simulation, and with computer 16 continuously recordings; Wherein, the nitrogen injection pressure can be 8MPa, and the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 can be controlled at 7.7MPa, and injection rate can be 0.05ml/min; This injection pressure, outlet back pressure, injection rate can be adjusted according to the actual requirements.
During concrete enforcement, in the embodiment of the present invention, the using method of two-dimentional microcosmic visual Simulation experimental facilities can also comprise: during model semi-circular bracket 4 half-twist, by top entrance injection, the outlet at bottom extraction from the transparent pore model of microscopic simulation, can simulate the vertical seepage flow characteristics of the transparent pore model inner fluid of microscopic simulation.
The below lifts the concrete experimentation that the two-dimentional microcosmic visual Simulation experimental facilities of the embodiment of the present invention is used in an example explanation.In this example, two-dimentional microcosmic visual Simulation experimental facilities simulated oil inclination layer is 7 °, also can be other inclination angle number of degrees when specifically implementing, and experimentation similarly.
Fig. 3 is 7 ° of structural representations under condition for two-dimentional microcosmic visual Simulation experimental facilities simulated oil inclination layer in this example.As shown in Figure 3, concrete experimentation can comprise:
1, the model inclination angle is set:
Inclination angle actual in oil reservoir is 7 °, unclamp the second bolt 12, be rotated counterclockwise model semi-circular bracket 4 until after zero graduation line on model semi-circular bracket 4 points to 7 ° of graduation mark positions of fan dial 5, tighten the second bolt 12 model semi-circular bracket 4 is fixed on model base 6;
2, the microscope inclination angle is set:
Unclamp the first bolt 7, along the first groove 10 down sliding microscope crossbeams 8, until the object lens of microscope 1 when parallel with the high-pressure glass form at clamping device for high temperature high pressure microscopic experiment 2 tops, tightened the first bolt 7 microscope crossbeam 8 is fixed on column 9;
3, set up model confined pressure and the intensification of control model:
Utilize manual pump 19 to inject the ethylene glycol of the high grade of transparency in the clamping device for high temperature high pressure microscopic experiment 2 that is sealed with the transparent pore model of microscopic simulation, injection rate 3ml/min until pressure reaches 8.5MPa, sets up the model confined pressure; Utilize the electric heating cover of clamping device for high temperature high pressure microscopic experiment 2, clamping device for high temperature high pressure microscopic experiment 2 is heated to 45 ℃ of predetermined temperatures;
4, saturation water is processed:
Utilize displacement pump 18 that the formation water for preparing is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2, injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 is controlled at 7.7MPa; Simultaneously, open LED intense light source 3 and regulate its brightness, until can the clear Fluid Flow in A that observes in the transparent pore model of microscopic simulation in the object lens of microscope 1;
5, saturated oils is processed:
Utilize displacement pump 18 that the formation oil for preparing is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2, injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 is controlled at 7.7MPa, until export moisture when being 0%, stop injecting, set up the irreducible water saturation of the transparent pore model of microscopic simulation;
6, the nitrogen displacement of reservoir oil:
Utilize displacement pump 18 with the entrance injection microscopic simulation transparent pore model of nitrogen from clamping device for high temperature high pressure microscopic experiment 2, injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 is controlled at 7.7MPa, injection rate 0.05ml/min, utilize rheology characteristic and the displacement of reservoir oil feature of nitrogen bubble in the microscope 1 transparent pore model of Continuous Observation microscopic simulation, and with computer 16 continuously recordings.
Photograph two-dimentional microcosmic Simulation experimental image by microscope 1 during enforcement in the nitrogen oil displacement process, by analyzing image or the video that does not photograph in the same time, can obtain the microcosmic oil drive feature of nitrogen under the different aperture size condition, and the regularity of distribution of remaining oil.
In sum, the two-dimentional microcosmic visual Simulation experimental facilities of the embodiment of the present invention can be completed the vertical Seepage Experiment that imitates the transparent pore model inner fluid of microscopic simulation under the stratum high-temperature condition of high voltage, and the plane Seepage Experiment of the transparent pore model inner fluid of arbitrary angle microscopic simulation; Can be used for characterizing vertical seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of microscopic simulation, and plane seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of arbitrary angle microscopic simulation.Simultaneously, can contrast that the top is injected and the seepage flow characteristics difference of bottom injection, analyze different oil reservoirs inclination angles to the rule that affects of fluid seepage flow characteristics in pore media.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiments of the invention; the protection domain that is not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a two-dimentional microcosmic visual Simulation experimental facilities, is characterized in that, comprising:
Imaging system, displacement system and model tilt angle control; Wherein:
Imaging system comprises: microscope (1), LED intense light source (3), the first bolt (7), microscope crossbeam (8), column (9), the first groove (10), mobile platform (11) and computer (16); The displacement system comprises: clamping device for high temperature high pressure microscopic experiment (2), back-pressure valve (17), displacement pump (18) and manual pump (19); The model tilt angle control comprises: model semi-circular bracket (4), fan dial (5), model base (6), the second bolt (12), the 3rd bolt (13), the second groove (14), the 3rd groove (15), ball bearing (20);
Microscope (1) is fixed on microscope crossbeam (8), and microscope crossbeam (8) is fixed on column (9) by first bolt (7) that can slide in the first groove (10); Microscope (1) is connected by data wire with computer (16); Column (9) is vertically fixed on mobile platform (11); The first bolt (7) is by the inclination angle that slides up and down in the first groove (10) and fixedly microscope crossbeam (8) changes microscope (1); Microscope (1) is positioned at the first side of clamping device for high temperature high pressure microscopic experiment (2), is used for showing and shooting with video-corder the flow process of the transparent pore model inner fluid of the interior microscopic simulation of clamping device for high temperature high pressure microscopic experiment (2); LED intense light source (3) is positioned at the second side of clamping device for high temperature high pressure microscopic experiment (2), and being used for provides light source to the transparent pore model of microscopic simulation; Computer (16) is used for pressure and the data on flows of image, video and displacement pump (18), manual pump (19) and back-pressure valve (17) that storage microscope (1) photographs;
Back-pressure valve (17), displacement pump (18) and manual pump (19) are connected to clamping device for high temperature high pressure microscopic experiment (2) by pipeline; Clamping device for high temperature high pressure microscopic experiment (2) adopts electrical heating to keep constant temperature, and in cavity, horizontal direction seals the fixedly transparent pore model of microscopic simulation; The transparent pore model of microscopic simulation is up and down with the sealing of high pressure tempering clear glass, along diagonal inlet porting and outlet, with the entrance and exit formation seal channel of clamping device for high temperature high pressure microscopic experiment (2); Displacement pump (18) is used for injecting displacing agent to the transparent pore model of microscopic simulation; Manual pump (19) is used to clamping device for high temperature high pressure microscopic experiment (2) that confined pressure is provided; Back-pressure valve (17) is used for controlling the back pressure of the transparent pore model of microscopic simulation;
Clamping device for high temperature high pressure microscopic experiment (2) and LED intense light source (3) are fixed in model semi-circular bracket (4); The first side of model semi-circular bracket (4) is established semicircular the second groove (14), the first side of fan dial (5) is established semicircular the 3rd groove (15), and the first side of the first side of model semi-circular bracket (4) and fan dial (5) is homonymy; The left and right bilateral symmetry is provided with two second bolts (12) that can slide along the second groove (14) in the second groove (14), and in the 3rd groove (15), the left and right bilateral symmetry is provided with two the 3rd bolts (13) that can slide along the 3rd groove (15); Model semi-circular bracket (4) is fixed on model base (6) by the second bolt (12), and fan dial (5) is fixed on model base (6) by the 3rd bolt 13; Model semi-circular bracket (4) and fan dial (5) are coaxial semicircle axis body, are connected by ball bearing (20) in the gap that contacts between model semi-circular bracket (4) and fan dial (5).
2. two-dimentional microcosmic visual Simulation experimental facilities as claimed in claim 1, is characterized in that, during model semi-circular bracket (4) half-twist, the transparent pore model of microscopic simulation in clamping device for high temperature high pressure microscopic experiment (2) is for standing vertically.
3. two-dimentional microcosmic visual Simulation experimental facilities as claimed in claim 1 or 2, is characterized in that, the second side of model semi-circular bracket (4) is provided with the zero graduation line, the position during with record and calibrating patterns semi-circular bracket (4) horizontal positioned.
4. two-dimentional microcosmic visual Simulation experimental facilities as claimed in claim 3, it is characterized in that, the even graduation mark that distributes between 0 °～90 ° in the second two ends, side left and right of fan dial (5), be used to indicate in model semi-circular bracket (4) rotary course, the scale of the fan dial (5) that the zero graduation line of model semi-circular bracket (4) points to is the inclination angle of clamping device for high temperature high pressure microscopic experiment (2) rotation.
5. the using method of the described two-dimentional microcosmic visual Simulation experimental facilities of claim 4, is characterized in that, comprising:
Unclamp the second bolt (12), be rotated counterclockwise model semi-circular bracket (4) until zero graduation line on model semi-circular bracket (4) points to oil reservoir actual inclination angle behind the graduation mark position of fan dial (5), tighten the second bolt (12) model semi-circular bracket (4) is fixed on model base (6);
Unclamp the first bolt (7), along the first groove (10) down sliding microscope crossbeam (8), until the object lens of microscope (1) when parallel with the high-pressure glass form at clamping device for high temperature high pressure microscopic experiment (2) top, tightened the first bolt (7) microscope crossbeam (8) are fixed on column (9);
Set up the confined pressure of the transparent pore model of microscopic simulation and the transparent pore model of microscopic simulation is carried out hyperthermic treatment;
Utilize displacement pump (18) that the formation water for preparing is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment (2); Simultaneously, open LED intense light source (3) and regulate its brightness, until observe the Fluid Flow in A in the transparent pore model of microscopic simulation in the object lens of microscope (1);
Utilize displacement pump (18) that the formation oil for preparing is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment (2), until export moisture when being 0%, stop injecting, set up the irreducible water saturation of the transparent pore model of microscopic simulation;
Utilize displacement pump (18) with the entrance injection microscopic simulation transparent pore model of nitrogen from clamping device for high temperature high pressure microscopic experiment (2), utilize rheology characteristic and the displacement of reservoir oil feature of nitrogen bubble in the transparent pore model of microscope (1) Continuous Observation microscopic simulation, and with computer (16) continuously recording.
6. method as claimed in claim 5, is characterized in that, sets up the confined pressure of the transparent pore model of microscopic simulation, comprising:
Utilize manual pump (19) to the middle ethylene glycol that injects the high grade of transparency of the clamping device for high temperature high pressure microscopic experiment that is sealed with the transparent pore model of microscopic simulation (2), injection rate 3ml/min until pressure reaches 8.5MPa, sets up the model confined pressure.
7. method as claimed in claim 5, is characterized in that, the transparent pore model of microscopic simulation is carried out hyperthermic treatment, comprising:
Utilize the electric heating cover of clamping device for high temperature high pressure microscopic experiment (2), clamping device for high temperature high pressure microscopic experiment (2) is heated to 45 ℃ of predetermined temperatures.
8. method as claimed in claim 5, it is characterized in that, when utilizing displacement pump (18) that the formation water for preparing and formation oil are injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment (2), injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment (2) is controlled at 7.7MPa.
9. method as claimed in claim 5, it is characterized in that, when utilizing displacement pump (18) that nitrogen is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment (2), injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment (2) is controlled at 7.7MPa, injection rate 0.05ml/min.
10. method as claimed in claim 5, it is characterized in that, during model semi-circular bracket (4) half-twist, by top entrance injection, the outlet at bottom extraction from the transparent pore model of microscopic simulation, the vertical seepage flow characteristics of the transparent pore model inner fluid of simulation microscopic simulation.
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