CN108825221B - Device and method for detecting distribution of residual oil in homogeneous and heterogeneous thick oil layers in layer - Google Patents
Device and method for detecting distribution of residual oil in homogeneous and heterogeneous thick oil layers in layer Download PDFInfo
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 34
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- 239000003292 glue Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
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- 230000005484 gravity Effects 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims description 4
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
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- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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Abstract
The invention relates to a device and a method for detecting the distribution of residual oil in an intrastratal homogeneous and heterogeneous thick oil layer, wherein the device for detecting the distribution of the residual oil in the intrastratal homogeneous and heterogeneous thick oil layer comprises the following components: the layered metering flat plate model comprises a cuboid shell, a single-layer or multi-layer sand body is arranged in the cuboid shell, an injection port is formed in the top end of one side of the cuboid shell, a single or multiple outlets are formed in the side wall of the other side of the cuboid shell, and the outlets are connected with corresponding oil-water separators and measuring cylinders; the homogeneous light source is arranged right behind the layered metering flat plate model, the camera is arranged right in front of the layered metering flat plate model, and the residual oil distribution detection device for the homogeneous and thick oil layer in the layer is integrally arranged in the thermostat. The invention can simulate the reservoir structure of each large oil field actual block by using the similar criterion on the experimental scale, simulate the development measure most suitable for the production of the target oil field by adjusting various measures of the injection mode and the injection time, and provide the related technical support for the future production increase and quality increase development of the oil field.
Description
Technical Field
The invention belongs to the field of physical experimental equipment for oil and gas exploitation, and particularly relates to an intralaminar homogeneous and heterogeneous thick oil layer residual oil distribution detection device and method, which are used for testing the residual oil distribution of heterogeneous large and thick reservoirs such as homogeneity, positive rhythm and negative rhythm.
Background
The offshore oil field is developed in a large-well-spacing multilayer commingled production mode due to the fact that a well mouth accommodated by a small platform area is limited, an oil reservoir developed at present is thick and serious in-layer heterogeneity, and injected water among injection and production wells seriously intrudes along an advantageous channel due to permeability difference and gravity differentiation in the water injection and polymer injection development processes, so that a large amount of residual oil which is not affected by the injected water among the production wells in the high water-cut period is formed in the peripheral layer.
The thick oil layer is divided into the following layers according to the different longitudinal permeability: homogeneous oil layer, positive rhythm (high lower permeability and low upper permeability) oil layer, and reverse rhythm (high upper permeability and low lower permeability) oil layer. The residual oil utilization degree along the longitudinal direction of an oil layer in the water drive development process is different, the mining field is called as a 'existence and secondary primary dominant water flow channel', and the residual oil saturation around the bottom of the well is still very high under the condition that the water production rate of the oil well is very high. In order to research the water driving degree and influence factors of the residual oil in the layer, the residual oil distribution detection device for the homogeneous and intraformational heterogeneous thick oil layer is designed, the existence rule of the residual oil in the layer can be directly observed through a physical experiment means, the further adjustment and development scheme of the oil field is guided, and the device has important significance for improving the crude oil recovery rate.
At present, most indoor physical simulation experiments adopt parallel cores or parallel sand-filled pipe models to research the residual oil distribution rule and influence factors of interlayer heterogeneous reservoirs, and SunzoZhi and the like design experimental devices for detecting the residual oil saturation of each layer by adopting X-rays in separate injection. So far, there is no experimental device for detecting the distribution rule and flow condition of the residual oil at each longitudinal part of the oil layer caused by the gravity differentiation effect in the layer. The experimental device is a two-dimensional visible flat model, and is mainly used for simulating the large-thick layer co-injection co-production condition of the offshore oil field at present, co-injection of an injection well, sectional detection of the liquid outlet and oil outlet conditions of the production well, detection of the use condition of crude oil at each layer through video recording and observation, observation of the use condition of the saturation of crude oil near the longitudinal direction and the oil well and liquid outlet conditions through changing the injection mode, and providing a solid foundation for the understanding and improvement of the development condition of the oil field.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides a device and a method for detecting the distribution of residual oil in an intralaminar homogeneous or non-homogeneous thick oil layer; the device for detecting the distribution of the residual oil in the homogeneous and thick heterogeneous oil layers can visually display the propulsion change of the oil and water in the homogeneous and thick heterogeneous oil layers and the distribution of the residual oil near a production well during water injection (poly/poly-meter binary) layered mining of the homogeneous and thick heterogeneous oil layers in the layer, and can further analyze the displacement condition of each layer through a fluid acquisition system to obtain the extraction degree of each layer.
In order to achieve the purpose, the invention adopts the following scheme:
in situ homogeneity and thick oil reservoir surplus oil distribution detection device of non-homogeneity include: a layered metrology plate model, wherein: the layered metering flat plate model comprises a cuboid shell, a single-layer or multi-layer sand body is arranged in the cuboid shell, an injection port is formed in the top end of one side of the cuboid shell, a single or multiple outlets are formed in the side wall of the other side of the cuboid shell, the number of the outlets is the same as the number of the layers of the sand body, each outlet corresponds to one oil-water separator and one measuring cylinder, each outlet is connected with the corresponding oil-water separator, and each oil-water separator is connected with the corresponding measuring cylinder; the homogeneous light source is arranged right behind the layered metering flat plate model, the camera is arranged right in front of the layered metering flat plate model, and the residual oil distribution detection device for the homogeneous and heterogeneous thick oil layers in the layers is integrally arranged in the thermostat.
Preferably, the cuboid casing is formed by acrylic organic glass board through the gluey connection of organic glass, includes: the device comprises a front-end glass plate of a layered metering flat model, a rear-end glass plate of the layered metering flat model, an upper-end glass strip of the layered metering flat model, a lower-end glass strip of the layered metering flat model, a left-end glass strip of the layered metering flat model and a right-end glass strip of the layered metering flat model; a left porous glass strip is vertically embedded in the position, 2-4 mm away from the left glass strip, in the cuboid shell, the length and the thickness of the left porous glass strip are the same as those of the left glass strip, the thickness of the left porous glass strip is 2-3 mm, and a layer of left end gauze with equal length is tightly attached to the right side of the left porous glass strip; a right porous glass strip is vertically embedded in the position, 2-4 mm away from the right glass strip, of the cuboid shell, the length and the thickness of the right porous glass strip are the same as those of the right glass strip, the thickness of the right porous glass strip is 2-4 mm, and the left side of the right porous glass strip is tightly attached to a right gauze with the same length; and a single or a plurality of outlet end partition plates are transversely arranged between the right end glass strip and the right end porous glass strip, and each outlet end partition plate is positioned between adjacent layers of the sand body.
Preferably, a single-layer or multi-layer sand body is arranged between the left porous glass strip and the right porous glass strip, the sand body is formed by mixing and curing quartz sand and epoxy resin glue, all layers of the heterogeneous reservoir stratum are mutually communicated, and different reservoir stratum structures are simulated by the quartz sand with different meshes, the epoxy resin glue with different proportions and the quartz sand.
Preferably, the layered metering flat plate model injection port is positioned at the top end of the cuboid shell between the left-end porous glass strip and the left-end glass strip, and fluid in the middle container is displaced to the layered metering flat plate model injection port at a constant flow rate by using a plunger pump; each outlet is arranged at the right end of the layered metering flat plate model in the horizontal direction, each outlet is flush with the corresponding outlet end partition plate, the outlet at the bottommost end is flush with the bottom end of the cavity in the cuboid shell, and each layer of outlet collects fluid flowing out of the sand body in a layered mode; each outlet is connected with a corresponding oil-water separator, each oil-water separator is connected to a corresponding measuring cylinder, the oil-water separator determines the oil output of each layer by recording the liquid level scale of oil, and the liquid level scale of each measuring cylinder represents the liquid output of each layer.
Preferably, the camera is erected right in front of the layered metering flat plate model through the tripod, collects images of oil-water distribution conditions in real time and transmits the images to the computer for subsequent processing.
The method for detecting the distribution of residual oil in an in-situ homogeneous and non-homogeneous thick oil layer comprises the following steps:
(1) Weighing the dry weight of the layered metering flat plate model, vacuumizing the layered metering flat plate model to saturate simulation oil, weighing the wet weight of the layered metering flat plate model after aging after saturation is finished, and calculating to obtain the pore volume of the layered metering flat plate model 1;
(2) The temperature of the thermostat is adjusted to an experimental temperature, when the temperature in the thermostat reaches the experimental temperature, formation water in the middle container is displaced at a constant flow rate through a plunger pump, air in the pipeline equipment is exhausted for the first time before the formation water is displaced to an injection port of the layered metering flat plate model, then the formation water enters the sand body of the layered metering flat plate model through the injection port of the layered metering flat plate model, the formation water displaces simulated oil in three layers due to the driving force and the gravity differentiation effect, the displaced oil and water respectively flow into corresponding oil-water separators from each outlet of the layered metering flat plate model, and the camera shoots in real time and records oil page scales and scales of a measuring cylinder in the oil-water separators at intervals; recording the time when the outlet end is exposed to water, closing a valve switch of an intermediate container loaded with formation water after the water content of the outlet end exceeds 30%, opening the valve switch of the intermediate container loaded with the polymer, and continuing to displace until the total water yield of the outlet reaches 98%;
(3) Processing the data collected at each moment according to each oil-water separator and each measuring cylinder to obtain the extraction degree and the water content of each layer of the layered metering flat plate model at different moments, calculating the oil production speed and the liquid production speed of each layer at different moments, and drawing a relation curve of the extraction degree and the injected PV number of each layer and a relation curve of the water content and the injected PV number according to the calculated data; analyzing and describing the water-breakthrough time and the oil-water distribution condition in the layered metering flat plate model after the polymer is injected according to the data acquisition time corresponding to the image shot by the camera, and analyzing and summarizing the residual oil distribution rule of the homogeneous and heterogeneous thick oil layers by combining the drawn relation curve graph.
Compared with the prior art, the invention has the following beneficial effects:
1. the permeability of each layer of the heterogeneous thick oil layer in the layer can be adjusted by adjusting the mesh number of the quartz sand and the proportion of the epoxy resin glue, the reservoir structure of each large oil field actual block can be simulated by utilizing a similar criterion on the experimental scale, and the development measure most suitable for the production of the target oil field can be simulated by adjusting various measures of an injection mode and an injection opportunity, so that the related technical support is provided for the future production increase and quality increase development of the oil field;
2. the oil output and the liquid output of each layer of the thick heterogeneous oil layer in the layer can be quantitatively collected in a layering way, and the method is suitable for quantitative research on the distribution of the small residual oil layer of the heterogeneous reservoir;
3. the method can visually display the propulsion change of oil and water of each layer and the distribution of residual oil near a production well during homogeneous and in-layer heterogeneous thick oil layer water injection (poly/poly-meter binary) layered production.
Drawings
FIG. 1 is a schematic diagram of a device for detecting the distribution of residual oil in homogeneous and heterogeneous thick oil layers;
FIG. 2 is a schematic view of a layered metrology plate model;
FIG. 3 is a schematic top view cross-section of a layered metrology plate model;
FIG. 4 is a schematic left view of a layered metrology plate model;
FIG. 5 is a schematic right view of a layered metrology plate model;
in the figure: 1. measuring a flat plate model in a layering way; 2. filling ports of the layered metering flat model; 3a, a first outlet; 3b, a second outlet; 3c, a third outlet; 4a, a first oil-water separator; 4b, a second oil-water separator; 4c, a third oil-water separator; 5a, a first measuring cylinder; 5b, a second measuring cylinder; 5c, a third measuring cylinder; 6. measuring a front-end glass plate of the flat model in a layered manner; 7. measuring a rear-end glass plate of the flat plate model in a layering manner; 8. measuring a glass strip at the upper end of the flat model in a layered manner; 9. measuring a glass strip at the lower end of the flat plate model in a layered manner; 10. measuring a glass strip at the left end of the flat plate model in a layering manner; 11. measuring a glass strip at the right end of the flat plate model in a layered manner; 12a, a left porous glass strip; 12b, a right porous glass strip; 13a, a left end filter screen; 13b, a right filter screen; 14a, a first outlet end separator; 14b, a second outlet end separator.
Detailed Description
The following three-layered sand body is taken as an example for schematically explaining, as shown in fig. 1, the remaining oil distribution detection device for homogeneous and heterogeneous thick oil layers in the layer comprises: the layered metering flat plate model 1 comprises a cuboid shell, a single-layer (homogeneous) or multi-layer (heterogeneous) sand body is arranged in the cuboid shell, an injection port is formed in the top end of one side of the cuboid shell, three outlets are formed in the side wall of the other side of the cuboid shell, the three outlets are respectively connected with an oil-water separator, and the oil-water separator is connected with a measuring cylinder; the right back of the layered metering flat plate model is provided with an even light source, the right front of the layered metering flat plate model is provided with a camera, the rest oil distribution detection device of the in-layer homogeneous and heterogeneous thick oil layer is integrally arranged in a thermostat, the thermostat ensures that the whole set of device is in a constant temperature environment and provides a corresponding experiment temperature, the even light source ensures that the camera collects images with better effect, and the oil-water separator and the measuring cylinder are used as a metering tool for oil-water extraction conditions.
The cuboid casing is formed by acrylic organic glass board through the organic glass adhesive bonding, include: the device comprises a front-end glass plate 6 of a layered metering flat model, a rear-end glass plate 7 of the layered metering flat model, an upper-end glass strip 8 of the layered metering flat model, a lower-end glass strip 9 of the layered metering flat model, a left-end glass strip 10 of the layered metering flat model and a right-end glass strip 11 of the layered metering flat model; a left-end porous glass strip 12a is vertically embedded in the position, 2 mm-4 mm away from the left-end glass strip, in the cuboid shell, the length and the thickness of the left-end porous glass strip 12a are the same as those of the left-end glass strip 10, the thickness is 2 mm-3 mm, and the right side of the left-end porous glass strip 12a is tightly attached to a layer of left-end gauze 13a with the same length; a right porous glass strip 12b is vertically embedded in the position, 2-4 mm away from the right glass strip, of the cuboid shell, the length and the thickness of the right porous glass strip 12b are the same as those of the right glass strip 11, the thickness is 2-4 mm, and a layer of right gauze 13b with the same length is tightly attached to the left side of the right porous glass strip 12 b; a first outlet end partition plate 14a and a second outlet end partition plate 14b are transversely arranged between the right end glass strip 11 and the right end porous glass strip 12b, the first outlet end partition plate 14a is located at two vertical thirds of the right end porous glass strip 12b, and the second outlet end partition plate 14b is located at one vertical third of the right end porous glass strip 12 b.
A single-layer (homogeneous) or multi-layer (heterogeneous) sand body is arranged between the left porous glass strip 12a and the right porous glass strip 12b, the sand body is formed by mixing and curing quartz sand and epoxy resin glue, and different reservoir structures are simulated by the quartz sand with different meshes and the epoxy resin glue and the quartz sand with different proportions.
The layered metering flat plate model injection port 2 is positioned at the top end of the cuboid shell between the left porous glass strip 12a and the left glass strip 10, and fluid in the middle container is displaced to the layered metering flat plate model injection port 2 at a constant flow rate by a plunger pump; a first outlet 3a, a second outlet 3b and a third outlet 3c are arranged at the right end of the layered metering flat plate model 2 in the horizontal direction, the first outlet 3a is flush with a first outlet end partition plate 14a, the second outlet 3b is flush with a second outlet end partition plate 14b, the third outlet 3c is flush with the bottom end of the cavity in the cuboid shell, and the first outlet 3a, the second outlet 3b and the third outlet 3c collect fluid flowing out of the interior of the sand body in a layered mode; the first outlet 3a is connected with a first oil-water separator 4a, the second outlet 3b is connected with a second oil-water separator 4b, and the third outlet 3c is connected with a third oil-water separator 4 c; the first oil-water separator 4a is connected into the first measuring cylinder 5a, the second oil-water separator 4b is connected into the second measuring cylinder 5b, the third oil-water separator 4c is connected into the third measuring cylinder 5c, the first oil-water separator 4a, the second oil-water separator 4b and the third oil-water separator 4c determine the three-layer oil yield by recording the liquid level scales of the oil, and the liquid level scales of the first measuring cylinder 5a, the second measuring cylinder 5b and the third measuring cylinder 5c represent the three-layer oil yield.
A uniform light source arranged right behind the layered metering flat plate model 1 provides better illumination conditions for shooting, and the camera stands right in front of the layered metering flat plate model 2 through a tripod, collects images of oil-water distribution conditions in real time and transmits the images to a computer for subsequent processing.
The method for detecting the distribution of residual oil in an intrastratal homogeneous and non-homogeneous thick oil layer comprises the following steps:
(1) Weighing the dry weight of the layered metering flat plate model 1, vacuumizing the layered metering flat plate model 1 to saturate simulation oil, weighing the wet weight of the layered metering flat plate model 1 after aging after saturation is finished, and calculating to obtain the pore volume of the layered metering flat plate model 1;
(2) The temperature of the thermostat is adjusted to an experimental temperature, after the temperature in the thermostat reaches the experimental temperature, formation water in a middle container is displaced at a constant flow rate through a plunger pump, air in the pipe line equipment is exhausted before the formation water is displaced to an injection port 2 of a layered metering flat plate model, then the formation water enters a sand body of the layered metering flat plate model 1 through the injection port 2 of the layered metering flat plate model, the formation water displaces simulated oil in three layers due to the differential action of driving force and gravity, displaced oil and water respectively flow into a first oil-water separator 4a, a second oil-water separator 4b and a third oil-water separator 4c from a first outlet 3a, a second outlet 3b and a third outlet 3c of the layered metering flat plate model, and a camera shoots in real time and records oil page scales and scales of a measuring cylinder in the oil-water separator at intervals; and recording the time of the moment when the water is seen at the outlet end, closing a valve switch of the intermediate container for loading the formation water after the water content at the outlet end exceeds 30%, opening the valve switch of the intermediate container for loading the polymer, and continuing to displace until the total water yield at the outlet reaches 98%.
(3) Processing the data collected at each moment according to the three oil-water separators and the measuring cylinder to obtain the extraction degree and the water content of each layer of the layered metering flat plate model 1 at different moments, calculating the oil production speed and the liquid production speed of each layer at different moments, and drawing a relation curve of the extraction degree and the injected PV number and a relation curve of the water content and the injected PV number of each layer according to the calculated data; analyzing and describing the water-breakthrough time and the oil-water distribution condition in the layered metering flat plate model 1 after the polymer is injected according to the corresponding data acquisition time of the image shot by the camera, and analyzing and summarizing the distribution rule of the residual oil in the homogeneous and heterogeneous thick oil layers by combining the drawn relation curve graph.
Claims (1)
1. A method for detecting the distribution of residual oil in an intrastratal homogeneous and heterogeneous thick oil layer adopts a device for detecting the distribution of residual oil in the intrastratal homogeneous and heterogeneous thick oil layers, wherein the device for detecting the distribution of residual oil in the intrastratal homogeneous and heterogeneous thick oil layers comprises a layered metering flat plate model which comprises a rectangular shell, single-layer or multilayer sand bodies are arranged in the rectangular shell, the top end of one side of the rectangular shell is provided with an injection port, the side wall of the other side of the rectangular shell is provided with one or more outlets, the outlets are respectively connected with an oil-water separator, and the oil-water separator is connected with a measuring cylinder; a uniform light source is arranged right behind the layered metering flat plate model, a camera is arranged right in front of the layered metering flat plate model, and the remaining oil distribution detection device of the homogeneous and heterogeneous thick oil layers in the layers is integrally arranged in a thermostat; the cuboid casing is formed by acrylic organic glass board through the organic glass adhesive bonding, include: the device comprises a front-end glass plate of a layered metering flat model, a rear-end glass plate of the layered metering flat model, an upper-end glass strip of the layered metering flat model, a lower-end glass strip of the layered metering flat model, a left-end glass strip of the layered metering flat model and a right-end glass strip of the layered metering flat model; a left porous glass strip is vertically embedded in the position, 2-4 mm away from the left glass strip, in the cuboid shell, the length and the thickness of the left porous glass strip are the same as those of the left glass strip, the width of the left porous glass strip is 2-3 mm, and a layer of left gauze with equal length is tightly attached to the right side of the left porous glass strip; a right porous glass strip is vertically embedded in the position, 2-4 mm away from the right glass strip, of the cuboid shell, the length and the thickness of the right porous glass strip are the same as those of the right glass strip, the width of the right porous glass strip is 2-4 mm, and the left side of the right porous glass strip is tightly attached to a right gauze with the same length; a single or a plurality of outlet end partition plates are transversely arranged between the right-end glass strip and the right-end porous glass strip, and each outlet end partition plate is positioned between adjacent layers of the sand body; a single-layer or multi-layer sand body is arranged between the left porous glass strip and the right porous glass strip, and the sand body is formed by mixing and curing quartz sand and epoxy resin glue; simulating a homogeneous reservoir through a single-layer sand body, wherein the homogeneous reservoir is made of quartz sand with a fixed mesh and a fixed mass ratio of the quartz sand to epoxy resin glue, simulating a heterogeneous reservoir through a plurality of layers of sand bodies, all layers of the heterogeneous reservoir are mutually communicated, and different reservoir structures are simulated in different layers through different meshes of quartz sand and different mass ratios of the quartz sand to the epoxy resin glue; the layered metering flat plate model injection port is positioned at the top end of the cuboid shell between the left porous glass strip and the left glass strip, and fluid in the middle container is displaced to the layered metering flat plate model injection port at a fixed flow rate by using a plunger pump; each outlet is arranged at the right end of the layered metering flat plate model in the horizontal direction, each outlet is flush with the corresponding outlet end partition plate, the outlet at the bottommost end is flush with the bottom end of the cavity in the cuboid shell, and each layer of outlet collects fluid flowing out of the sand body in a layered mode; each outlet is connected with a corresponding oil-water separator, each oil-water separator is connected to a corresponding measuring cylinder, each oil-water separator determines the oil yield of each layer by recording the liquid level scale of the oil, and the liquid level scale of each measuring cylinder represents the liquid yield of each layer; the camera is erected right in front of the layered metering flat plate model through the tripod, and images of oil-water distribution conditions are collected in real time and transmitted to the computer for subsequent processing; the method for detecting the distribution of residual oil in an in-situ homogeneous thick oil layer and an in-situ heterogeneous thick oil layer comprises the following steps:
(1) Weighing the dry weight of the layered metering flat plate model, vacuumizing the layered metering flat plate model to saturate simulation oil, weighing the wet weight of the layered metering flat plate model after aging after saturation is finished, and calculating to obtain the pore volume of the layered metering flat plate model;
(2) Adjusting the temperature of the thermostat to an experimental temperature, displacing formation water in a middle container at a constant flow rate through a plunger pump after the temperature in the thermostat reaches the experimental temperature, and performing primary air evacuation inside the pipeline equipment before the formation water is displaced to an injection port of a layered metering flat plate model, then allowing the formation water to enter a sand body of the layered metering flat plate model through the injection port of the layered metering flat plate model, displacing simulated oil in three layers due to the differential action of driving force and gravity, allowing the displaced oil water to flow into corresponding oil-water separators from outlets of the layered metering flat plate model respectively, and performing real-time shooting by a camera while recording liquid level scales of the oil in the oil-water separators and scales of a measuring cylinder at intervals; recording the time when the outlet end is exposed to water, closing a valve switch of an intermediate container loaded with formation water after the water content of the outlet end exceeds 30%, opening the valve switch of the intermediate container loaded with the polymer, and continuing to displace until the total water yield of the outlet reaches 98%;
(3) Processing the data collected at each moment according to each oil-water separator and each measuring cylinder to obtain the extraction degree and the water content of each layer of the layered metering flat plate model at different moments, calculating the oil production speed and the liquid production speed of each layer at different moments, and drawing a relation curve of the extraction degree and the injected PV number of each layer and a relation curve of the water content and the injected PV number according to the calculated data; respectively describing the water-breakthrough time and the oil-water distribution condition in the layered metering flat plate model after polymer injection according to the data acquisition time corresponding to the image shot by the camera, and analyzing and summarizing the residual oil distribution rule of the homogeneous and heterogeneous thick oil layers by combining the drawn relation curve graph;
the device and the method for detecting the distribution of residual oil in homogeneous and heterogeneous thick oil layers in the layers are used for adjusting the injection mode and the injection time, can simulate the development measures most suitable for oil field production, and provide related technical support for future production increase and quality increase development of oil fields.
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| CN111173498B (en) * | 2020-02-25 | 2022-09-09 | 东北石油大学 | Visual oil displacement device for experiment |
| CN114459841B (en) * | 2020-11-09 | 2023-09-26 | 中国石油天然气股份有限公司 | Heterogeneous core model and preparation method thereof |
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