CN103161452B - Two dimension microcosmic visual Simulation experimental facilities and using method thereof - Google Patents
Two dimension microcosmic visual Simulation experimental facilities and using method thereof Download PDFInfo
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- CN103161452B CN103161452B CN201310080236.6A CN201310080236A CN103161452B CN 103161452 B CN103161452 B CN 103161452B CN 201310080236 A CN201310080236 A CN 201310080236A CN 103161452 B CN103161452 B CN 103161452B
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Abstract
The present invention discloses a kind of two-dimentional microcosmic visual Simulation experimental facilities and using method thereof, comprise: imaging system, wherein the first bolt changes microscope inclination angle, microscopy and the flow process of shooting with video-corder the transparent pore model inner fluid of microscopic simulation by sliding up and down in the first groove and fixing microscope crossbeam; Displacement system, the wherein fixing transparent pore model of microscopic simulation of horizontal direction sealing in clamping device for high temperature high pressure microscopic experiment cavity, this model upper-lower seal, diagonally inlet porting and outlet, form seal channel with clamping device for high temperature high pressure microscopic experiment entrance and exit; Model tilt angle control, wherein model semi-circular bracket internal fixtion clamping device for high temperature high pressure microscopic experiment, be fixed on model base by second bolt that can slide along the second groove, fan dial is fixed on model base by the 3rd bolt that can slide along the 3rd groove.The vertical seepage flow of microscopic simulation transparent pore model inner fluid and arbitrary angle plane seepage simulation test can be completed.
Description
Technical field
The present invention relates to oil field development experimental technique field, particularly relate 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 micro-flow characteristics under the different development scheme of accurate Characterization in oil reservoir porous media, discloses the important technical of the micro scale sweep mechanism of different development scheme.Along with injection fluid becomes increasingly complex (as: steam, chemical agent, condensation gas, non-condensation gas etc.), and the oil reservoir object injected becomes increasingly complex, new requirement is proposed for two-dimensional visualization microscopic simulation test, comprising: vertical seepage flow characteristics and the mechanism of oil displacement that microscopic simulation transparent pore model inner fluid 1) can be characterized; 2) plane seepage flow characteristics and the mechanism of oil displacement of the transparent pore model inner fluid of arbitrary angle microscopic simulation can be characterized.
Patent CN201273903 proposes a kind of clamping device for high temperature high pressure microscopic experiment, patent CN200985788 proposes a kind of holder for high-temperature high-pressure glass microscopic model, the advantage of these two patents is all under long period, elevated pressures and higher temperature, to utilize 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 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, only illustrate the structural relation between the model bed body base of clamper and other parts of clamper, whether undeclared clamper possesses arbitrary angle spinfunction and realizes the parts composition of this function.In the technical scheme of above two patents, all unspecified which kind of technological means of employing realizes 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 microscopic simulation transparent pore model inner fluid, and the plane seepage flow characteristics of the transparent pore model inner fluid of arbitrary angle microscopic simulation and mechanism of oil displacement, this device comprises:
Imaging system, displacement system and model tilt angle control; Wherein:
Imaging system comprises: microscope 1, LED intense light source 3, first bolt 7, microscope crossbeam 8, column 9, first groove 10, mobile platform 11 and computer 16; Displacement system comprises: clamping device for high temperature high pressure microscopic experiment 2, back-pressure valve 17, displacement pump 18 and manual pump 19; Model tilt angle control comprises: model semi-circular bracket 4, fan dial 5, model base 6, second bolt 12, the 3rd bolt 13, 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; First bolt 7 by sliding up and down and fixing the inclination angle that microscope crossbeam 8 changes microscope 1 in the first groove 10; Microscope 1 is positioned at the first side of clamping device for high temperature high pressure microscopic experiment 2, for showing and shoot with video-corder the flow process of the transparent pore model inner fluid of microscopic simulation in 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, for providing light source to the transparent pore model of microscopic simulation; Computer 16 for store microscope 1 and photograph image, video and displacement pump 18, the pressure of manual pump 19 and back-pressure valve 17 and data on flows;
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, the fixing transparent pore model of microscopic simulation of horizontal direction sealing in cavity; The transparent pore model of microscopic simulation is up and down with the sealing of high pressure tempering clear glass, and diagonally inlet porting and outlet, forms seal channel with the entrance and exit of clamping device for high temperature high pressure microscopic experiment 2; Displacement pump 18 for injecting displacing agent in the transparent pore model of microscopic simulation; Manual pump 19 is for providing confined pressure for clamping device for high temperature high pressure microscopic experiment 2; Back-pressure valve 17 is 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; Semicircular second groove 14 is established in first side of model semi-circular bracket 4, and semicircular 3rd groove 15 is established in the first side of fan dial 5, and the first side of model semi-circular bracket 4 and the first side of fan dial 5 are homonymy; In second groove 14, the left and right sides is arranged with the left and right sides in two second bolt the 12, three grooves 15 that can slide along the second groove 14 and is arranged with two the 3rd bolts 13 that can slide along the 3rd groove 15; Model semi-circular bracket 4 is fixed in model base 6 by the second bolt 12, and fan dial 5 is fixed in model base 6 by the 3rd bolt 13; Model semi-circular bracket 4 is coaxial semicircle axis body with fan dial 5, passes through ball bearing 20 in the gap contacted and be connected between model semi-circular bracket 4 with fan dial 5.
In an embodiment, during model semi-circular bracket 4 half-twist, the transparent pore model of the 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 zero graduation line, with record and calibrating patterns semi-circular bracket 4 horizontal positioned time position.
In an embodiment, second two ends, left and right, side of fan dial 5 are uniformly distributed the graduation mark between 0 ° ~ 90 °, be used to indicate in model semi-circular bracket 4 rotary course, the scale of the fan dial 5 of the zero graduation line sensing of model semi-circular bracket 4 is the inclination angle that clamping device for high temperature high pressure microscopic experiment 2 rotates.
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 microscopic simulation transparent pore model inner fluid, and the plane seepage flow characteristics of the transparent pore model inner fluid of arbitrary angle microscopic simulation and mechanism of oil displacement, the method comprises:
Unclamp the second bolt 12, be rotated counterclockwise model semi-circular bracket 4 until the zero graduation line in model semi-circular bracket 4 points to the actual inclination angle of oil reservoir behind the graduation mark position of fan dial 5, tighten the second bolt 12 and model semi-circular bracket 4 is fixed in model base 6;
Unclamp the first bolt 7, along the first groove 10 slide downward microscope crossbeam 8, until when the object lens of microscope 1 are parallel with the high-pressure glass form at clamping device for high temperature high pressure microscopic experiment 2 top, tighten the first bolt 7 and microscope crossbeam 8 is fixed on column 9;
Set up the confined pressure of the transparent pore model of microscopic simulation and hyperthermic treatment is carried out to the transparent pore model of microscopic simulation;
Utilize displacement pump 18 that the formation water prepared is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2; Meanwhile, open LED intense light source 3 and regulate its brightness, until observe the fluid flowing 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 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, 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.
In an embodiment, set up the confined pressure of the transparent pore model of microscopic simulation, comprising:
Utilize manual pump 19 in the clamping device for high temperature high pressure microscopic experiment 2 being sealed with the transparent pore model of microscopic simulation, inject the ethylene glycol of the high grade of transparency, injection rate 3ml/min, until pressure reaches 8.5MPa, sets up model confined pressure.
In an embodiment, hyperthermic treatment is carried out to the transparent pore model of microscopic simulation, 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 predetermined temperature 45 DEG C.
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 controls at 7.7MPa.
In an embodiment, when utilizing displacement pump 18 by transparent from the entrance injection microscopic simulation of clamping device for high temperature high pressure microscopic experiment 2 for nitrogen pore model, injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 controls at 7.7MPa, injection rate 0.05ml/min.
In an embodiment, during model semi-circular bracket 4 half-twist, injected by the top entry from the transparent pore model of microscopic simulation, outlet at bottom extraction, the vertical seepage flow characteristics of simulation microscopic simulation transparent pore model inner fluid.
The two-dimentional microcosmic visual Simulation experimental facilities of the embodiment of the present invention can complete the vertical Seepage Experiment of the microscopic simulation transparent pore model inner fluid imitated under 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 the vertical seepage flow characteristics and the mechanism of oil displacement that characterize microscopic simulation transparent pore model inner fluid, and the plane seepage flow characteristics of the transparent pore model inner fluid of arbitrary angle microscopic simulation and mechanism of oil displacement.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.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 the structural representation under 7 ° of conditions.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
Cannot complete the technical problem of the vertical seepage flow of microscopic simulation transparent pore model inner fluid and the plane seepage simulation test of the transparent pore model inner fluid of arbitrary angle microscopic simulation 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(LightEmittingDiode, light emitting diode) intense light source 3, first bolt 7, microscope crossbeam 8, column 9, first groove 10, mobile platform 11 and computer 16; Displacement system comprises: clamping device for high temperature high pressure microscopic experiment 2, back-pressure valve 17, displacement pump 18 and manual pump 19; Model tilt angle control comprises: model semi-circular bracket 4, fan dial 5, model base 6, second bolt 12, the 3rd bolt 13, second groove 14, the 3rd groove 15, ball bearing 20;
Microscope 1 is fixed on microscope crossbeam 8, microscope crossbeam 8 by 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; First bolt 7, can 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, for showing and shoot with video-corder the flow process of the transparent pore model inner fluid of microscopic simulation in 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, for providing light source to the transparent pore model of microscopic simulation; Computer 16 for store microscope 1 and photograph image, video and displacement pump 18, manual pump 19 and back-pressure valve 17 pressure, data on flows;
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 cavity, 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, diagonally inlet porting and the outlet of the transparent pore model of microscopic simulation, and form seal channel with the entrance and exit of clamping device for high temperature high pressure microscopic experiment 2; Displacement pump 18 for injecting displacing agent in the transparent pore model of microscopic simulation; Manual pump 19 is for providing confined pressure for clamping device for high temperature high pressure microscopic experiment; Back-pressure valve 17 is 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; Semicircular second groove 14 is established in first side of model semi-circular bracket 4, and semicircular 3rd groove 15 is established in the first side of fan dial 5, and the first side of model semi-circular bracket 4 and the first side of fan dial 5 are homonymy; Symmetrical two second bolts 12 that can slide along the second groove 14 in the left and right sides in second groove 14 of model semi-circular bracket 4, symmetrical two the 3rd bolts 13 that can slide along the 3rd groove 15 in the left and right sides in the 3rd groove 15 of fan dial 5; Model semi-circular bracket 4 is fixed in model base 6 by the second bolt 12 in the second groove 14, and fan dial 5 is fixed in model base 6 by the 3rd bolt 13 in the 3rd groove 15; Model semi-circular bracket 4 is coaxial semicircle axis body with fan dial 5, passes through ball bearing 20 in the gap contacted and be connected between model semi-circular bracket 4 with fan dial 5.
During concrete enforcement, the second side of model semi-circular bracket 4 can be provided with zero graduation line, with record and calibrating patterns semi-circular bracket 4 horizontal positioned time position.
During concrete enforcement, second two ends, left and right, side of fan dial 5 can be uniformly distributed the graduation mark between 0 ° ~ 90 °, be used to indicate in model semi-circular bracket 4 rotary course, the scale of the fan dial 5 of the zero graduation line sensing of model semi-circular bracket 4 is the inclination angle that clamping device for high temperature high pressure microscopic experiment 2 rotates.
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 side, and the graduation mark between equally distributed 0 ° ~ 90 ° of two ends, fan dial 5 second left and right, side.
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, injected by the top entry from the transparent pore model of microscopic simulation, outlet at bottom extraction, the vertical seepage flow characteristics of microscopic simulation transparent pore model inner fluid can be simulated.
In the embodiment of the present invention, the using method of two-dimentional microcosmic visual Simulation experimental facilities can comprise:
1, model inclination angle is set:
Unclamp the second bolt 12, be rotated counterclockwise model semi-circular bracket 4 until the zero graduation line in model semi-circular bracket 4 points to the actual inclination angle of oil reservoir behind the graduation mark position of fan dial 5, tighten the second bolt 12 and model semi-circular bracket 4 is fixed in model base 6;
2, microscope inclination angle is set:
Unclamp the first bolt 7, along the first groove 10 slide downward microscope crossbeam 8, until when the object lens of microscope 1 are parallel with the high-pressure glass form at clamping device for high temperature high pressure microscopic experiment 2 top, tighten the first bolt 7 and microscope crossbeam 8 is fixed on column 9;
3, Modling model confined pressure and Controlling model heat up:
Set up the confined pressure of the transparent pore model of microscopic simulation and hyperthermic treatment is carried out to the transparent pore model of microscopic simulation; Wherein, set up the confined pressure of the transparent pore model of microscopic simulation, such as can comprise: utilize manual pump 19 in the clamping device for high temperature high pressure microscopic experiment 2 being sealed with the transparent pore model of microscopic simulation, inject the ethylene glycol of the high grade of transparency, injection rate 3ml/min, until pressure reaches 8.5MPa, thus set up model confined pressure; Hyperthermic treatment is carried out to the transparent pore model of microscopic simulation, such as, can comprise: the electric heating cover utilizing clamping device for high temperature high pressure microscopic experiment 2, clamping device for high temperature high pressure microscopic experiment 2 is heated to predetermined temperature 45 DEG C; The injected material related in precedent, injection rate, pressure, predetermined temperature can adjust according to the actual requirements;
4, saturation water process:
Utilize displacement pump 18 that the formation water prepared is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment 2; Meanwhile, open LED intense light source 3 and regulate its brightness, until observe the fluid flowing in the transparent pore model of microscopic simulation in the object lens of microscope 1; Wherein, formation water injection pressure can be 8MPa, and the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 can control at 7.7MPa; This injection pressure, outlet back pressure can adjust according to the actual requirements;
5, saturated oils process:
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; Wherein, formation oil injection pressure can be 8MPa, and the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 can control at 7.7MPa; This injection pressure, outlet back pressure can adjust according to the actual requirements;
6, the nitrogen displacement of reservoir oil:
Utilize 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, 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; Wherein, nitrogen injection pressure can be 8MPa, and the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 can control at 7.7MPa, and injection rate can be 0.05ml/min; This injection pressure, outlet back pressure, injection rate can adjust 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, injected by the top entry from the transparent pore model of microscopic simulation, outlet at bottom extraction, the vertical seepage flow characteristics of microscopic simulation transparent pore model inner fluid can be simulated.
Lift the specific experiment process that an example illustrates the two-dimentional microcosmic visual Simulation experimental facilities using the embodiment of the present invention below.In this example, two-dimentional microcosmic visual Simulation experimental facilities simulated oil inclination layer is 7 °, and can be also other inclination angle number of degrees during concrete enforcement, experimentation be similar.
Fig. 3 is that in this example, two-dimentional microcosmic visual Simulation experimental facilities simulated oil inclination layer is the structural representation under 7 ° of conditions.As shown in Figure 3, specific experiment process can comprise:
1, model inclination angle is set:
It is 7 ° according to the actual inclination angle of oil reservoir, unclamp the second bolt 12, be rotated counterclockwise model semi-circular bracket 4 until after zero graduation line in model semi-circular bracket 4 points to 7 ° of graduation mark positions of fan dial 5, tighten the second bolt 12 and be fixed in model base 6 by model semi-circular bracket 4;
2, microscope inclination angle is set:
Unclamp the first bolt 7, along the first groove 10 slide downward microscope crossbeam 8, until when the object lens of microscope 1 are parallel with the high-pressure glass form at clamping device for high temperature high pressure microscopic experiment 2 top, tighten the first bolt 7 and microscope crossbeam 8 is fixed on column 9;
3, Modling model confined pressure and Controlling model heat up:
Utilize manual pump 19 in the clamping device for high temperature high pressure microscopic experiment 2 being sealed with the transparent pore model of microscopic simulation, inject the ethylene glycol of the high grade of transparency, injection rate 3ml/min, until pressure reaches 8.5MPa, sets up 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 predetermined temperature 45 DEG C;
4, saturation water process:
Utilize displacement pump 18 that the formation water prepared is injected the transparent pore model of microscopic simulation, injection pressure 8MPa from the entrance of clamping device for high temperature high pressure microscopic experiment 2, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment 2 controls at 7.7MPa; Meanwhile, open LED intense light source 3 and regulate its brightness, until the fluid flowing in the transparent pore model of microscopic simulation clearly can be observed in the object lens of microscope 1;
5, saturated oils process:
Utilize displacement pump 18 that the formation oil prepared 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 controls 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 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 controls at 7.7MPa, injection rate 0.05ml/min, 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.
In nitrogen oil displacement process, two-dimentional microscopic simulation test image is photographed by microscope 1 during enforcement, by analyzing the image or video that do not photograph in the same time, the microcosmic oil drive feature of nitrogen under different aperture size condition can be obtained, 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 complete the vertical Seepage Experiment of the microscopic simulation transparent pore model inner fluid imitated under 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 the vertical seepage flow characteristics and the mechanism of oil displacement that characterize microscopic simulation transparent pore model inner fluid, and the plane seepage flow characteristics of the transparent pore model inner fluid of arbitrary angle microscopic simulation and mechanism of oil displacement.Meanwhile, the seepage flow characteristics difference that top is injected and bottom is injected can be contrasted, analyze the affecting laws of different oil reservoir inclination angle to fluid neuron network feature in pore media.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within 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); Displacement system comprises: clamping device for high temperature high pressure microscopic experiment (2), back-pressure valve (17), displacement pump (18) and manual pump (19); 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); First bolt (7) by sliding up and down and fixing the inclination angle that microscope crossbeam (8) changes microscope (1) in the first groove (10); Microscope (1) is positioned at the first side of clamping device for high temperature high pressure microscopic experiment (2), for display and the flow process of shooting with video-corder the transparent pore model inner fluid of clamping device for high temperature high pressure microscopic experiment (2) interior microscopic simulation; LED intense light source (3) is positioned at the second side of clamping device for high temperature high pressure microscopic experiment (2), for providing light source to the transparent pore model of microscopic simulation; Computer (16) for store microscope (1) and photograph image, video and displacement pump (18), the pressure of manual pump (19) and back-pressure valve (17) and data on flows;
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, the fixing transparent pore model of microscopic simulation of horizontal direction sealing in cavity; The transparent pore model of microscopic simulation is up and down with the sealing of high pressure tempering clear glass, and diagonally inlet porting and outlet, forms seal channel with the entrance and exit of clamping device for high temperature high pressure microscopic experiment (2); Displacement pump (18) for injecting displacing agent in the transparent pore model of microscopic simulation; Manual pump (19) is for providing confined pressure for clamping device for high temperature high pressure microscopic experiment (2); Back-pressure valve (17) is 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); Semicircular second groove (14) is established in first side of model semi-circular bracket (4), semicircular 3rd groove (15) is established in first side of fan dial (5), and the first side of model semi-circular bracket (4) and the first side of fan dial (5) are homonymy; In second groove (14), the left and right sides is arranged with two second bolts (12) that can slide along the second groove (14), and in the 3rd groove (15), the left and right sides is arranged with two the 3rd bolts (13) that can slide along the 3rd groove (15); Model semi-circular bracket (4) is fixed in model base (6) by the second bolt (12), and fan dial (5) is fixed in model base (6) by the 3rd bolt 13; Model semi-circular bracket (4) is coaxial semicircle axis body with fan dial (5), passes through ball bearing (20) in the gap contacted and be connected between model semi-circular bracket (4) with 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, it is characterized in that, the second side of model semi-circular bracket (4) is provided with zero graduation line, with record and calibrating patterns semi-circular bracket (4) horizontal positioned time position.
4. two-dimentional microcosmic visual Simulation experimental facilities as claimed in claim 3, it is characterized in that, second two ends, left and right, side of fan dial (5) are uniformly distributed the graduation mark between 0 ° ~ 90 °, be used to indicate in model semi-circular bracket (4) rotary course, the scale of the fan dial (5) of the zero graduation line sensing of model semi-circular bracket (4) is the inclination angle that clamping device for high temperature high pressure microscopic experiment (2) rotates.
5. a using method for two-dimentional microcosmic visual Simulation experimental facilities described in claim 4, is characterized in that, comprising:
Unclamp the second bolt (12), be rotated counterclockwise model semi-circular bracket (4) until the zero graduation line in model semi-circular bracket (4) points to the actual inclination angle of oil reservoir behind the graduation mark position of fan dial (5), tighten the second bolt (12) and model semi-circular bracket (4) is fixed in model base (6);
Unclamp the first bolt (7), along the first groove (10) slide downward microscope crossbeam (8), until when the object lens of microscope (1) are parallel with the high-pressure glass form at clamping device for high temperature high pressure microscopic experiment (2) top, tighten the first bolt (7) and microscope crossbeam (8) is fixed on column (9);
Set up the confined pressure of the transparent pore model of microscopic simulation and hyperthermic treatment is carried out to the transparent pore model of microscopic simulation;
Utilize displacement pump (18) that the formation water prepared is injected the transparent pore model of microscopic simulation from the entrance of clamping device for high temperature high pressure microscopic experiment (2); Meanwhile, open LED intense light source (3) and regulate its brightness, until observe the fluid flowing in the transparent pore model of microscopic simulation in the object lens of microscope (1);
Utilize displacement pump (18) that the formation oil prepared 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) 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), 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, set up the confined pressure of the transparent pore model of microscopic simulation, comprising:
Utilize manual pump (19) to the middle ethylene glycol injecting the high grade of transparency of the clamping device for high temperature high pressure microscopic experiment (2) being sealed with the transparent pore model of microscopic simulation, injection rate 3ml/min, until pressure reaches 8.5MPa, sets up model confined pressure.
7. method as claimed in claim 5, is characterized in that, carry out hyperthermic treatment, comprising the transparent pore model of microscopic simulation:
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 predetermined temperature 45 DEG C.
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) controls at 7.7MPa.
9. method as claimed in claim 5, it is characterized in that, when utilizing displacement pump (18) by transparent from the entrance injection microscopic simulation of clamping device for high temperature high pressure microscopic experiment (2) for nitrogen pore model, injection pressure 8MPa, the outlet back pressure of clamping device for high temperature high pressure microscopic experiment (2) controls 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, injected by the top entry from the transparent pore model of microscopic simulation, outlet at bottom extraction, the vertical seepage flow characteristics of simulation microscopic simulation transparent pore model inner fluid.
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