CN104931660A - Equipment for dynamically measuring intake profile and operating method and application thereof - Google Patents
Equipment for dynamically measuring intake profile and operating method and application thereof Download PDFInfo
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Abstract
The invention relates to equipment for dynamically measuring an intake profile and an operating method and application thereof. The equipment comprises a liquid container part, a visual vertical flat-plate sand-packed model, a back-pressure valve and a produced fluid collector. A microscopic camera unit is provided outside the visual vertical flat-plate sand-packed model. The equipment and a method for dynamically measuring the intake profile are established by means of visual physical simulation with image processing; actual qualitative operability is high, the equipment and the method are objective, and technical support is provided for better understanding of the dynamic changes in the intake profile and adjustment of following development measures.
Description
Technical field
The present invention relates to a kind of device of kinetic measurement intake profile and method of work and application, belong to the technical field of petrochemical complex.
Background technology
In waterflooding reservoir process, often because oil reservoir contains comparatively multiple zone, and each physical property skewness in the vertical, cause each oil reservoir water-intake capacity different, thus each layer waterflooding development effect is different.Profile-log of water injection can reflect the water-intake capacity on stratum, can be understood the genesis analysis injecting water by the intake profile data obtained, and Forecast and control waterline advances, and the water-intake capacity of monitoring oil reservoir, carries out remaining oil distribution analysis etc.Therefore obtain the water swelling elastomer that dynamic intake profile is conducive to holding in real time oil reservoir in oil reservoir development process, thus take corresponding measure to improve flood effectiveness.
Current intake profile mainly adopts high cost, low visual mining site trace method (isotope injection profile well logging) to obtain, namely under water filling condition, isotope is injected into well, along with the inflow of injecting water, isotope filter is amassed on water filling layer surface, tracer curve is measured with gamma instrument, gamma ray curve before surveyed gamma curve and release nucleic is contrasted, obtains the intake profile figure of this stratum water swelling elastomer of reflection.But, still not based on the laboratory experiment method of intake profile curve being carried out to duplicate measurements and Real Time Observation that visual virtual design is set up, limit the visual understanding of oil worker to each layer water-intake capacity to a certain extent, therefore being necessary the device and method setting up a kind of kinetic measurement intake profile, providing technical support for being familiar with oilfield exploitation procedure better.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of device of kinetic measurement intake profile.
The present invention also provides a kind of method of work utilizing said apparatus kinetic measurement intake profile.
The present invention also provides a kind of device of above-mentioned kinetic measurement intake profile to draw the application process of dynamic intake profile curve.
Terminological interpretation:
Intake profile: when referring to that exploitation is injected in oil field, well each layer of position is for the allocation proportion injecting water.Intake profile can be used to the complicacy reflecting oil reservoir, can not only provide foundation, also can be applied to profile control and water plugging, prevent the oil reservoir development Adjusted Option such as water breakthrough for multi-zone flow regulating, therefore has great importance for raising oil reservoir oil displacement efficiency.
Technical scheme of the present invention is as follows:
A device for kinetic measurement intake profile, comprises the carrying liquid portion be connected successively, visual vertical flat plate sand-packed model, check valve and production fluid gatherer, is outside equipped with micro-photographing apparatus at described visual vertical flat plate sand-packed model.Described micro-photographing apparatus is arranged on the position parallel with visual vertical flat plate sand-packed model, oil-water interface position in the visual vertical flat plate sand-packed model of real-time monitoring, then micro-photographing apparatus is by being connected with outer computer with the image of Real-time Obtaining water-oil interface.
Preferred according to the present invention, described carrying liquid portion comprises the intermediate receptacle holding in-place oil be connected in parallel, the intermediate receptacle holding local water, holds the intermediate receptacle of the first local water, holds the intermediate receptacle of the second local water, and described intermediate receptacle holding the first local water, the color holding the local water in the intermediate receptacle of the second local water are different; Described carrying liquid portion also comprises the constant-flux pump driving crude oil or local water to flow out.
Preferred according to the present invention, described visual vertical flat plate sand-packed model comprises at least simultaneously transparent dull and stereotyped back-up sand chamber, in described dull and stereotyped back-up sand chamber, both sides are respectively arranged with simulation feed tube and simulation drain pipe, are vertically installed with multiple through hole on the surface of described simulation feed tube and simulation drain pipe; Described simulation feed tube is connected with described carrying liquid portion, and described simulation drain pipe is connected with production fluid gatherer by check valve.
Preferred according to the present invention, the device of described kinetic measurement intake profile also comprises the measurement support for fixing described visual vertical flat plate sand-packed model and micro-photographing apparatus.
Preferred according to the present invention, described measurement support comprises vertical component effect and horizontal part, described vertical component effect is provided with visual vertical flat plate sand-packed model, the end of described horizontal part is provided with micro-photographing apparatus adjustment rack.
Preferred according to the present invention, the device of described kinetic measurement intake profile also comprises the wobble pump be connected with described check valve.Described check valve is by wobble pump controlled pressure.
Preferred according to the present invention, the back side in described dull and stereotyped back-up sand chamber is provided with light source.The advantage herein designed is, arranges bias light to oil-water interface position, is beneficial to collection image more clearly.
Preferred according to the present invention, the color of described first local water is color that is red, described second local water is blueness.
Utilize a method for said apparatus kinetic measurement intake profile, comprise step as follows:
1) install the device of described kinetic measurement intake profile, be connected by described micro-photographing apparatus with outer computer, the bottom of described production fluid gatherer is provided with electronic weigher, and described electronic weigher is connected with outer computer; Described outer computer is for gathering the described visual crude oil of vertical flat plate sand-packed model or the diffusion image of local water; Described outer computer is also for gathering solution weight in production fluid gatherer;
2) according to the stratigraphic distribution of working-yard, in described dull and stereotyped back-up sand chamber, successively fill and present different layers of sand, close described dull and stereotyped back-up sand chamber; The present invention utilizes the true stratum of true core particle simulation of different-grain diameter;
3) open light source, open micro-photographing apparatus;
4) is found time in the dull and stereotyped back-up sand chamber after back-up sand; Keep 4 ~ 5 hours;
5) to the saturated local water of visual vertical flat plate sand-packed model: utilize the layer of sand of local water displacement to dull and stereotyped back-up sand chamber that constant-flux pump will hold in the intermediate receptacle of local water;
6) to visual vertical flat plate sand-packed model displace crude oil: the layer of sand of mother oil displacement to dull and stereotyped back-up sand chamber utilizing constant-flux pump to hold in the intermediate receptacle of crude oil, until when no longer collecting water in production fluid gatherer, constant-flux pump is closed;
7) force value of check valve is regulated, with simulated formation pressure P h; Wobble pump is utilized to regulate the force value of check valve;
8) inject local water to visual vertical flat plate sand-packed model, and will now be designated as 0 moment; Open constant-flux pump, the speed of local water being pressed 0.6ml/min injects simulation feed tube; And utilize production fluid gatherer to collect the production fluid of visual vertical flat plate sand-packed model;
9) micro-photographing apparatus is utilized to observe water-oil interface distribution situation in visual vertical flat plate sand-packed model;
10) when step 9) distalmost end of water-oil interface that produces is not when arriving visual vertical flat plate sand-packed model outlet side, and measure the intake profile of a certain moment t1, record t1 and t1-△ t respectively with micro-photographing apparatus, moment water-oil interface distributed image; Described △ t=60s;
11) when step 9) the water-oil interface distalmost end that produces has been when having arrived visual vertical flat plate sand-packed model outlet side, measure the intake profile of a certain moment t2, use six-way valve using the red rock bed water in the intermediate receptacle holding the first local water as displacing fluid, inject in t2-△ t, and record t2 and t2-△ t water-oil interface distributed image respectively with micro-photographing apparatus;
12) when measuring the intake profile of subsequent time t3, use six-way valve using the blue local water in the intermediate receptacle holding the second local water as displacing fluid, inject in t3-△ t, and record t3 and t3-△ t water-oil interface distributed image respectively with micro-photographing apparatus;
13) for obtaining not water-oil interface distributed image in the same time, alter least-squares red rock bed water and blue local water after, namely step 11 is repeated)-12).
The device of above-mentioned kinetic measurement intake profile draws an application process for dynamic intake profile curve, comprises step as follows:
14) outer computer is utilized to process not water-oil interface image in the same time respectively, adopt indicator Kriging method to step 10)-13) the water-oil interface distributed image that obtains carries out binary conversion treatment: for by ripples and part and not made a distinction by ripples and part, being wherein 1 by the gray-scale value of ripples and the corresponding voxel of part, is not 0 by the gray-scale value of ripples and the corresponding voxel of part; Wherein said indicator Kriging method is existing method, specifically can see list of references: Watson G S.Smoothing and interpolation by krigingand with splines.Journal of the International Association forMathematical Geology, 1984,16 (6): 601-615;
15) ti (i=1,2,3 are in the same time calculated not ... n, n are natural number) to the volume ratio of the injection water of each layer of sand in visual vertical flat plate sand-packed model:
Ground floor (ti-△ t) ~ ti moment injects water volume and is:
V1＝(S1(t＝ti)—S2(t＝ti-△t))×h×φ1(I)；
The second layer (ti-△ t) ~ ti moment injects water volume and is:
V2＝(S′1(t＝ti)—S′2(t＝ti-△t))×h×φ2(I I)；
Third layer (ti-△ t) ~ ti moment injects water volume and is:
V3＝(S″1(t＝ti)—S″2(t＝ti-△t))×h×φ3(III)；
Then, the volume ratio that above-mentioned three layers of layer of sand inject water is respectively:
The volume ratio that ground floor layer of sand injects water is
The volume ratio that second layer layer of sand injects water is
The volume ratio that third layer layer of sand injects water is
In formula (I)-(VI), V1, V2, V3 are respectively the injection water volume of first, second and third layer of layer of sand; K1, K2, K3 are respectively the water suction ratio value of first, second and third layer of layer of sand; H is the thickness in dull and stereotyped back-up sand chamber, cm; " 1 is respectively first, second and third layer of layer of sand injects fluid sweep area in the ti moment, cm for S1, S ' 1, S
2; " 2 is that one, two, three layer of ti-△ t injects fluid sweep area, cm for S2, S ' 2, S
2; φ 1, φ 2, φ 3 are respectively the factor of porosity of first, second and third layer of layer of sand;
16) volume ratio of water is injected using each layer layer of sand as the standard evaluating each layer layer of sand water-intake capacity, draw dynamic intake profile curve, the horizontal ordinate of its coordinate system residing for dynamic intake profile curve is the volume ratio that layer of sand injects water, and ordinate is first, second and third layer of layer of sand.
Preferred according to the present invention, in step 2) in, utilize single tube back-up sand rock core to measure the factor of porosity of three layers of layer of sand respectively, measure the permeability of three layers of layer of sand simultaneously.
The invention has the advantages that:
The present invention adopts the method for visual virtual design, combining image treatment technology, establish a kind of device and method of kinetic measurement intake profile, its qualitative actual operation is strong, there is objectivity, for the adjustment of the dynamic change and subsequent development measure of being familiar with intake profile better provides technical support.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device of kinetic measurement intake profile of the present invention;
Wherein, 1, constant-flux pump; 2, the intermediate receptacle of in-place oil is held; 3, the intermediate receptacle of local water is held; 4, the intermediate receptacle of the first local water is held; 5, the intermediate receptacle of the second local water is held; 6, six-way valve; 7, light source; 8, visual vertical flat plate sand-packed model; 9, micro-photographing apparatus; 10, support is measured; 11, wobble pump; 12, check valve; 13, production fluid gatherer; 14, electronic weigher; 15, LOAD CELLS; 16, outer computer.
Fig. 2 is the cut-open view of visual vertical flat plate sand-packed model of the present invention;
Wherein, 17, dull and stereotyped back-up sand chamber; 18, feed tube is simulated; 19, drain pipe is simulated; 20, multiple through hole is vertically installed with on the surface of described simulation feed tube and simulation drain pipe; 21, adhesive; 22, true core particle.
Fig. 3 is in the embodiment of the present invention, when injecting local water 70 seconds, image in the visual vertical flat plate sand-packed model obtain micro-photographing apparatus carries out the image after binaryzation, wherein dark parts represents the scope that displacing fluid involved in 70 seconds, and light-colored part represents the scope that driven liquid not yet involves;
Fig. 4 is in the embodiment of the present invention, when injecting local water 100 seconds, image in the visual vertical flat plate sand-packed model obtain micro-photographing apparatus carries out the image after binaryzation, wherein dark parts represents the scope that displacing fluid involved in 70 seconds, and light-colored part represents the scope that driven liquid not yet involves;
Fig. 5 is in the embodiment of the present invention, the intake profile figure of visual vertical flat plate sand-packed model described in 100 second moment, is the bianry image obtained according to Fig. 3 and Fig. 4, and its experimental result data carrying out processing acquisition is drawn.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited thereto.
Dull and stereotyped back-up sand chamber of the present invention is of a size of 140.0mm × 110.0mm × 4.0mm, its simulating oil deposit is of a size of 120.0mm × 90.0mm × 2.0mm, be the adhesive of wide 2.0mm around it, the well spacing between described simulation feed tube and simulation drain pipe is 115mm.
Embodiment 1,
As shown in Figure 1.
A device for kinetic measurement intake profile, comprises the carrying liquid portion be connected successively, visual vertical flat plate sand-packed model 8, check valve 12 and production fluid gatherer 13, is outside equipped with micro-photographing apparatus 9 at described visual vertical flat plate sand-packed model 8.
Described carrying liquid portion comprises the intermediate receptacle 2 holding in-place oil be connected in parallel, the intermediate receptacle 3 holding local water, the intermediate receptacle 4 holding the first local water, the intermediate receptacle 5 that holds the second local water, and described intermediate receptacle 4 holding the first local water, the color holding the local water in the intermediate receptacle 5 of the second local water are different; Described carrying liquid portion also comprises the constant-flux pump 1 driving crude oil or local water to flow out.
Described visual vertical flat plate sand-packed model 8 comprises at least simultaneously transparent dull and stereotyped back-up sand chamber 17, in described dull and stereotyped back-up sand chamber 17, both sides are respectively arranged with simulation feed tube 18 and simulation drain pipe 19, are vertically installed with multiple through hole 20 on the surface of described simulation feed tube 18 and simulation drain pipe 19; Described simulation feed tube 18 is connected with described carrying liquid portion, and described simulation drain pipe 19 is connected with production fluid gatherer 13 by check valve 12.
The color of described first local water is color that is red, described second local water is blueness.
The device of described kinetic measurement intake profile also comprises the wobble pump 11 be connected with described check valve 12.
Embodiment 2,
The device of a kind of kinetic measurement intake profile as described in Example 1, its difference is, the device of described kinetic measurement intake profile also comprises the measurement support 10 for fixing described visual vertical flat plate sand-packed model 18 and micro-photographing apparatus 9.
Described measurement support 10 comprises vertical component effect and horizontal part, described vertical component effect is provided with visual vertical flat plate sand-packed model, the end of described horizontal part is provided with micro-photographing apparatus adjustment rack.
Embodiment 3,
The device of a kind of kinetic measurement intake profile as described in Example 1, its difference is, the back side in described dull and stereotyped back-up sand chamber 17 is provided with light source 7.
Embodiment 4,
Utilize a method for device kinetic measurement intake profile as described in embodiment 1-3, comprise step as follows:
1) install the device of described kinetic measurement intake profile, be connected by described micro-photographing apparatus 9 with outer computer 16, the bottom of described production fluid gatherer 13 is provided with electronic weigher 14, described electronic weigher 14 is connected with outer computer 16; Described outer computer is for gathering the described visual crude oil of vertical flat plate sand-packed model or the diffusion image of local water; Described outer computer is also for gathering solution weight in production fluid gatherer;
2) according to the stratigraphic distribution of working-yard, in described dull and stereotyped back-up sand chamber 17, successively fill and present different layers of sand, close described dull and stereotyped back-up sand chamber 17; The present invention utilizes the true stratum of true core particle simulation of different-grain diameter; 45 ~ 50 object silica sands are used to fill at described dull and stereotyped back-up sand chamber orlop, filling thickness is 3cm, middle layer uses 70 ~ 75 object silica sands to fill, filling thickness is 3cm, the superiors also use 45 ~ 50 object silica sands to fill, filling thickness is similarly 3cm, so just fills whole dull and stereotyped back-up sand chamber completely;
Single tube back-up sand rock core is utilized to measure the factor of porosity of three layers of layer of sand respectively: φ
1=0.32, φ
2=0.31, φ
3=0.30, measure the permeability of three layers of layer of sand: be respectively 750mD, 2200mD, 820mD simultaneously.
3) open light source 7, open micro-photographing apparatus 9;
4) is found time in the dull and stereotyped back-up sand chamber 17 after back-up sand; Keep 4 ~ 5 hours;
5) to the saturated local water of visual vertical flat plate sand-packed model 8: utilize the layer of sand of local water displacement to dull and stereotyped back-up sand chamber that constant-flux pump will hold in the intermediate receptacle of local water;
6) to visual vertical flat plate sand-packed model 8 displace crude oil: the layer of sand of mother oil displacement to dull and stereotyped back-up sand chamber utilizing constant-flux pump to hold in the intermediate receptacle of crude oil, until when no longer collecting water in production fluid gatherer, constant-flux pump is closed;
7) force value of check valve 12 is regulated, with simulated formation pressure P h; Ph=3Mpa, utilizes wobble pump to regulate the force value of check valve;
8) inject local water to visual vertical flat plate sand-packed model 8, and will now be designated as 0 moment; Open constant-flux pump, the speed of local water being pressed 0.6ml/min injects simulation feed tube; And utilize production fluid gatherer 13 to collect the production fluid of visual vertical flat plate sand-packed model 8;
9) micro-photographing apparatus 9 is utilized to observe water-oil interface distribution situation in visual vertical flat plate sand-packed model 8;
10) when step 9) distalmost end of water-oil interface that produces is not when arriving visual vertical flat plate sand-packed model 8 outlet side, and measure the intake profile of a certain moment t1, record t1 and t1-△ t respectively with micro-photographing apparatus, moment water-oil interface distributed image; Described △ t=60s;
11) when step 9) the water-oil interface distalmost end that produces has been when having arrived visual vertical flat plate sand-packed model outlet side, measure the intake profile of a certain moment t2, use six-way valve using the red rock bed water in the intermediate receptacle holding the first local water as displacing fluid, inject in t2-△ t, and record t2 and t2-△ t water-oil interface distributed image respectively with micro-photographing apparatus;
12) when measuring the intake profile of subsequent time t3, use six-way valve using the blue local water in the intermediate receptacle holding the second local water as displacing fluid, inject in t3-△ t, and record t3 and t3-△ t water-oil interface distributed image respectively with micro-photographing apparatus;
13) for obtaining not water-oil interface distributed image in the same time, alter least-squares red rock bed water and blue local water after, namely step 11 is repeated)-12).
Embodiment 5,
As described in embodiment 1-3, the device of kinetic measurement intake profile draws an application process for dynamic intake profile curve, comprises step as follows:
14) outer computer 16 is utilized to process not water-oil interface image in the same time respectively, adopt indicator Kriging method to step 10)-13) the water-oil interface distributed image that obtains carries out binary conversion treatment: for by ripples and part and not made a distinction by ripples and part, being wherein 1 by the gray-scale value of ripples and the corresponding voxel of part, is not 0 by the gray-scale value of ripples and the corresponding voxel of part; Fig. 3, Fig. 4 are the image obtained after Binary Sketch of Grey Scale Image.Wherein said indicator Kriging method is existing method, specifically can see list of references: Watson G S.Smoothing and interpolation by kriging and with splines.Journal of the International Association for Mathematical Geology, 1984,16 (6): 601-615;
15) ti (i=1,2,3 are in the same time calculated not ... n, n are natural number) to the volume ratio of the injection water of each layer of sand in visual vertical flat plate sand-packed model:
Ground floor (ti-△ t) ~ ti moment injects water volume and is:
V1＝(S1(t＝ti)—S2(t＝ti-△t))×h×φ1(I)；
The second layer (ti-△ t) ~ ti moment injects water volume and is:
V2＝(S′1(t＝ti)—S′2(t＝ti-△t))×h×φ2(I I)；
Third layer (ti-△ t) ~ ti moment injects water volume and is:
V3＝(S″1(t＝ti)—S″2(t＝ti-△t))×h×φ3(III)；
Then, the volume ratio that above-mentioned three layers of layer of sand inject water is respectively:
The volume ratio that ground floor layer of sand injects water is
The volume ratio that second layer layer of sand injects water is
The volume ratio that third layer layer of sand injects water is
In formula (I)-(VI), V1, V2, V3 are respectively the injection water volume of first, second and third layer of layer of sand; K1, K2, K3 are respectively the water suction ratio value of first, second and third layer of layer of sand; H is the thickness in dull and stereotyped back-up sand chamber, cm; " 1 is respectively first, second and third layer of layer of sand injects fluid sweep area in the ti moment, cm for S1, S ' 1, S
2; " 2 is that one, two, three layer of ti-△ t injects fluid sweep area, cm for S2, S ' 2, S
2; φ 1, φ 2, φ 3 are respectively the factor of porosity of first, second and third layer of layer of sand;
16) volume ratio of water is injected using each layer layer of sand as the standard evaluating each layer layer of sand water-intake capacity, draw dynamic intake profile curve, the horizontal ordinate of its coordinate system residing for dynamic intake profile curve is the volume ratio that layer of sand injects water, and ordinate is first, second and third layer of layer of sand.
Visual vertical flat plate sand-packed model basic parameter, as shown in table 1:
Table 1: dull and stereotyped sand-packed model data
Outer computer when obtaining 120 seconds and 180 seconds gathers experiment binary image, as shown in Figure 3, Figure 4:
Image is processed, and records experimental result data, as shown in table 2.
Table 2: experimental result data
Experimentally result data, depict intake profile, as shown in Figure 5, as can be seen from Figure 5 the water suction ratio of most permeable zone is up to 58.9%, and the water-intake capacity of low permeability layer is poor, the low permeability layer water suction ratio of the superiors is only 16.6%, has had a strong impact on development effectiveness, has therefore been necessary to take the modification scenario measures such as zonal injection.
Claims (10)
1. the device of a kinetic measurement intake profile, it is characterized in that, this device comprises the carrying liquid portion be connected successively, visual vertical flat plate sand-packed model, check valve and production fluid gatherer, is outside equipped with micro-photographing apparatus at described visual vertical flat plate sand-packed model.
2. the device of a kind of kinetic measurement intake profile according to claim 1, it is characterized in that, described carrying liquid portion comprises the intermediate receptacle holding in-place oil be connected in parallel, the intermediate receptacle holding local water, holds the intermediate receptacle of the first local water, holds the intermediate receptacle of the second local water, and described intermediate receptacle holding the first local water, the color holding the local water in the intermediate receptacle of the second local water are different; Described carrying liquid portion also comprises the constant-flux pump driving crude oil or local water to flow out.
3. the device of a kind of kinetic measurement intake profile according to claim 1, it is characterized in that, described visual vertical flat plate sand-packed model comprises at least simultaneously transparent dull and stereotyped back-up sand chamber, in described dull and stereotyped back-up sand chamber, both sides are respectively arranged with simulation feed tube and simulation drain pipe, are vertically installed with multiple through hole on the surface of described simulation feed tube and simulation drain pipe; Described simulation feed tube is connected with described carrying liquid portion, and described simulation drain pipe is connected with production fluid gatherer by check valve.
4. the device of a kind of kinetic measurement intake profile according to claim 1, is characterized in that, the device of described kinetic measurement intake profile also comprises the measurement support for fixing described visual vertical flat plate sand-packed model and micro-photographing apparatus.
5. the device of a kind of kinetic measurement intake profile according to claim 4, it is characterized in that, described measurement support comprises vertical component effect and horizontal part, described vertical component effect is provided with visual vertical flat plate sand-packed model, the end of described horizontal part is provided with micro-photographing apparatus adjustment rack.
6. the device of a kind of kinetic measurement intake profile according to claim 3, is characterized in that, the device of described kinetic measurement intake profile also comprises the wobble pump be connected with described check valve; The back side in described dull and stereotyped back-up sand chamber is provided with light source.
7. the device of a kind of kinetic measurement intake profile according to claim 2, is characterized in that, the color of described first local water is color that is red, described second local water is blueness.
8. utilize a method for device kinetic measurement intake profile as described in claim 1-7 any one, it is characterized in that, it is as follows that the method comprising the steps of:
1) install the device of described kinetic measurement intake profile, be connected by described micro-photographing apparatus with outer computer, the bottom of described production fluid gatherer is provided with electronic weigher, and described electronic weigher is connected with outer computer;
2) according to the stratigraphic distribution of working-yard, in described dull and stereotyped back-up sand chamber, successively fill and present different layers of sand, close described dull and stereotyped back-up sand chamber;
3) open light source, open micro-photographing apparatus;
4) is found time in the dull and stereotyped back-up sand chamber after back-up sand;
5) to the saturated local water of visual vertical flat plate sand-packed model;
6) to visual vertical flat plate sand-packed model displace crude oil;
7) force value of check valve is regulated, with simulated formation pressure;
8) inject local water to visual vertical flat plate sand-packed model, and will now be designated as 0 moment; And utilize production fluid gatherer to collect the production fluid of visual vertical flat plate sand-packed model;
9) micro-photographing apparatus is utilized to observe water-oil interface distribution situation in visual vertical flat plate sand-packed model;
10) when step 9) distalmost end of water-oil interface that produces is not when arriving visual vertical flat plate sand-packed model outlet side, and measure the intake profile of a certain moment t1, record t1 and t1-△ t respectively with micro-photographing apparatus, moment water-oil interface distributed image;
11) when step 9) the water-oil interface distalmost end that produces has been when having arrived visual vertical flat plate sand-packed model outlet side, measure the intake profile of a certain moment t2, using the red rock bed water in the intermediate receptacle holding the first local water as displacing fluid, inject in t2-△ t, and record t2 and t2-△ t water-oil interface distributed image respectively with micro-photographing apparatus;
12) when measuring the intake profile of subsequent time t3, using the blue local water in the intermediate receptacle holding the second local water as displacing fluid, injecting in t3-△ t, and recording t3 and t3-△ t water-oil interface distributed image respectively with micro-photographing apparatus;
13) for obtaining not water-oil interface distributed image in the same time, alter least-squares red rock bed water and blue local water after, namely step 11 is repeated)-12).
9. as described in claim 1-7 any one, the device of kinetic measurement intake profile draws an application process for dynamic intake profile curve, it is characterized in that, it is as follows that described application process comprises step:
14) outer computer is utilized to process not water-oil interface image in the same time respectively, adopt indicator Kriging method to step 10)-13) the water-oil interface distributed image that obtains carries out binary conversion treatment: for by ripples and part and not made a distinction by ripples and part, being wherein 1 by the gray-scale value of ripples and the corresponding voxel of part, is not 0 by the gray-scale value of ripples and the corresponding voxel of part;
15) ti (i=1,2,3 are in the same time calculated not ... n, n are natural number) to the volume ratio of the injection water of each layer of sand in visual vertical flat plate sand-packed model:
Ground floor (ti-△ t) ~ ti moment injects water volume and is:
V1＝(S1(t＝ti)—S2(t＝ti-△t))×h×φ1(I)；
The second layer (ti-△ t) ~ ti moment injects water volume and is:
V2＝(S′1(t＝ti)—S′2(t＝ti-△t))×h×φ2(II)；
Third layer (ti-△ t) ~ ti moment injects water volume and is:
V3＝(S″1(t＝ti)—S″2(t＝ti-△t))×h×φ3(III)；
Then, the volume ratio that above-mentioned three layers of layer of sand inject water is respectively:
The volume ratio that ground floor layer of sand injects water is
The volume ratio that second layer layer of sand injects water is
(V)；
The volume ratio that third layer layer of sand injects water is
In formula (I)-(VI), V1, V2, V3 are respectively the injection water volume of first, second and third layer of layer of sand; K1, K2, K3 are respectively the water suction ratio value of first, second and third layer of layer of sand; H is the thickness in dull and stereotyped back-up sand chamber, cm; " 1 is respectively first, second and third layer of layer of sand injects fluid sweep area in the ti moment, cm for S1, S ' 1, S
2; " 2 is that one, two, three layer of ti-△ t injects fluid sweep area, cm for S2, S ' 2, S
2; φ 1, φ 2, φ 3 are respectively the factor of porosity of first, second and third layer of layer of sand;
16) volume ratio of water is injected using each layer layer of sand as the standard evaluating each layer layer of sand water-intake capacity, draw dynamic intake profile curve, the horizontal ordinate of its coordinate system residing for dynamic intake profile curve is the volume ratio that layer of sand injects water, and ordinate is first, second and third layer of layer of sand.
10. the device of kinetic measurement intake profile draws the application process of dynamic intake profile curve as claimed in claim 9, it is characterized in that, in step 2) in, utilize single tube back-up sand rock core to measure the factor of porosity of three layers of layer of sand respectively, measure the permeability of three layers of layer of sand simultaneously.
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| CN108691533A (en) * | 2018-05-07 | 2018-10-23 | 西南石油大学 | A kind of profile-log of water injection test device and method based on temperature monitoring |
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| CN108691533A (en) * | 2018-05-07 | 2018-10-23 | 西南石油大学 | A kind of profile-log of water injection test device and method based on temperature monitoring |
| CN108691533B (en) * | 2018-05-07 | 2021-07-30 | 西南石油大学 | Water injection well water absorption profile testing device and method based on temperature monitoring |
| CN110863807A (en) * | 2019-11-06 | 2020-03-06 | 中国石油天然气股份有限公司 | Method for judging water absorption condition of oil-water well |
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