CN111963165B - Three-dimensional physical simulation experiment device and method for simulating dense oil reservoir development - Google Patents
Three-dimensional physical simulation experiment device and method for simulating dense oil reservoir development Download PDFInfo
- Publication number
- CN111963165B CN111963165B CN202011040652.XA CN202011040652A CN111963165B CN 111963165 B CN111963165 B CN 111963165B CN 202011040652 A CN202011040652 A CN 202011040652A CN 111963165 B CN111963165 B CN 111963165B
- Authority
- CN
- China
- Prior art keywords
- injection
- pressure
- production
- pipeline
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Abstract
The invention discloses a three-dimensional physical simulation experiment device and a method for simulating compact oil reservoir development, wherein the device comprises a cylinder body, a sealing cover, a rubber cylinder, a pipeline sealing protection device, a measuring electrode, a pressure monitoring device and an injection-production well pattern, wherein the sealing cover comprises a first cylindrical section, a third cylindrical section and a second circular platform section; the upper end of the rubber cylinder is sleeved on the outer surfaces of the second circular table section and the third cylindrical section, a confining pressure cavity is formed between the rubber cylinder and the cylinder body, a porous medium model is arranged in the rubber cylinder, and a sealing gasket is arranged between the porous medium model and the third cylindrical section; the pipeline sealing protection device comprises a first vertical cavity, a third vertical cavity and a second parallel cavity; and one end of the measuring electrode, the pressure monitoring device and one end of the pipeline of the injection and production well pattern are inserted into the porous medium model through the pipeline sealing protection device, and the other end of the pipeline is led out. The method can simulate the high-temperature and high-pressure conditions of the stratum more truly, and the saturation field and the pressure field conditions of the three-dimensional reservoir can be obtained in real time by monitoring the injection and production, pressure and saturation electrode conditions.
Description
Technical Field
The invention relates to the technical field of physical simulation experiments for oil and gas reservoir exploitation, in particular to a three-dimensional physical simulation experiment device and a method for simulating development of a compact reservoir.
Background
In the course of reservoir production, on-site production is often guided by means of physical simulation experiments, which have the advantages of being less expensive, less time consuming and repeatable than field tests. At present, simulation is carried out through a small-size core displacement experiment and a sand filling model displacement experiment, such as a core water flooding and gas production experiment, a flat plate model displacement experiment and the like. The small core experiment can be used for understanding the basic seepage mechanism of fluid in the core, but the small core experiment can only explain the basic oil (gas) development rule from a one-dimensional angle and cannot simulate the actual well pattern injection and production process of a mine field. Therefore, the three-dimensional physical model is receiving more and more attention as a means capable of macroscopically researching oil and gas development rules.
However, the three-dimensional physical models commonly used at present are mostly manufactured by sand-packed models or three-dimensional physical cementing modes. For three-dimensional sand-packed physical models, problems exist including: the sand filling strength is difficult to guarantee, the electrode is easy to extrude and deform in the sand filling process, the sealing performance is poor, the pressure bearing effect is poor, and the like, wherein liquid leakage at the electrode and the injection and production well point is the main reason for poor pressure bearing effect of the three-dimensional sand filling model. For the three-dimensional cemented physical model, the three-dimensional cemented rock core is cured and encapsulated by using the epoxy resin, so that the cemented rock core can more accurately simulate a reservoir, but due to process reasons, the problem of low pressure bearing capacity generally exists in the three-dimensional cemented physical model in the market at present, the connection part of an electrode and a pipeline is still the main reason of pressure leakage, and in addition, the flow channeling condition also exists on the wall surface of the rock core after saturated oil, and the high temperature resistance cannot be realized. At present, in unconventional oil and gas reservoirs such as shale oil reservoirs, tight oil reservoirs and the like, stratum conditions are mostly high-temperature and high-pressure conditions, and the conventional common three-dimensional physical simulation device cannot simulate the experimental conditions for developing the unconventional oil and gas reservoirs.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a three-dimensional physical simulation experiment apparatus and a method for simulating development of a tight reservoir, on one hand, the apparatus can simulate a real reservoir pore seepage situation based on a three-dimensional cemented artificial rock core, effectively solves the problem of low bearing capacity caused by pipeline or electrode deformation by providing a pipeline sealing protection apparatus, and realizes pressure sealing of the rock core whole body and a pipeline outlet by using a rubber cylinder wrapping and confining pressure mode. On the other hand, high-temperature and high-pressure conditions required by the development of unconventional oil and gas reservoirs represented by compact oil reservoirs can be simulated more truly by adopting high-temperature-resistant electrodes, high-temperature-resistant electrode wires, high-temperature and high-pressure-resistant rubber cylinders, glands and the like, so that the development process of the unconventional oil and gas reservoirs can be simulated more truly, a main seepage mechanism is disclosed, and guidance and reference are provided for the development of the unconventional oil and gas reservoirs.
The technical scheme of the invention is as follows:
on one hand, the three-dimensional physical simulation experiment device comprises a cylinder body, a sealing cover matched with the cylinder body, a rubber cylinder, a pipeline sealing protection device, a measuring electrode, a pressure monitoring device and an injection and production well pattern;
the sealing cover comprises a first cylindrical section, a second circular truncated cone section and a third cylindrical section which are coaxial and sequentially connected, the outer diameter of the first cylindrical section is matched with the inner diameter of the barrel, the end with the larger outer diameter of the second circular truncated cone section is connected with the first cylindrical section, the outer diameter of the end with the larger outer diameter of the second circular truncated cone section is smaller than the inner diameter of the barrel, and the outer diameter of the third cylindrical section is the same as the outer diameter of the end with the smaller outer diameter of the second circular truncated cone section; a first sealing ring is arranged between the cylinder body and the first cylindrical section;
the upper end of the rubber cylinder is sleeved on the outer surfaces of the second circular table section and the third cylindrical section, a confining pressure cavity is formed between the rubber cylinder and the cylinder body, a confining pressure pressurizing opening is formed in the side wall of the cylinder body corresponding to the confining pressure cavity, a porous medium model is arranged at the inner bottom of the rubber cylinder, and a rubber sealing gasket is arranged between the porous medium model and the third cylindrical section;
the pipeline sealing protection device comprises a first vertical cavity, a second parallel cavity and a third vertical cavity, wherein axial through channels are arranged on the sealing cover and the rubber sealing gasket, the shape of each channel is matched with that of the first vertical cavity, the first vertical cavity is arranged in each channel, the upper end of each channel is positioned in each channel of the sealing cover, the lower end of each channel is arranged in the porous medium model, the bottom of each channel is sealed, at least one first through hole is formed in the radial direction of the first vertical cavity in the porous medium model, one end of each second parallel cavity is connected with the corresponding first through hole, the other end of each second parallel cavity is sealed, at least one second through hole is formed in the bottom of each second parallel cavity in the axial direction, one end of each third vertical cavity is connected with the corresponding second through hole, and the other end of each third vertical cavity is sealed;
the detection end of the measuring electrode and a pressure monitoring pipeline of the pressure monitoring device penetrate through the third vertical cavity to be inserted into the porous medium model, and the other end of the measuring electrode and the other end of the pressure monitoring pipeline are both led out through the pipeline sealing protection device;
the injection and production well pattern comprises an injection well and a production well, the injection well and the production well are arranged on the porous medium model, and pipelines of the injection well and the production well are led out through the pipeline sealing protection device.
Preferably, the upper surface of the first cylindrical section is provided with a pull ring.
Preferably, a second sealing ring is arranged between the pipeline sealing protection device and the rubber sealing gasket.
Preferably, solid glue is arranged between the measuring electrode and the third vertical cavity, between the pressure monitoring pipeline and the third vertical cavity, and between the pipeline of the injection-production well pattern and the third vertical cavity.
Preferably, the electrode wire of the measuring electrode is made of fluoroplastic wires, the rubber sleeve is made of fluororubber, and the cylinder body and the sealing cover are made of stainless steel materials.
Preferably, the sealing device further comprises a gland for preventing the sealing cover from sliding out of the barrel.
Preferably, the gland comprises a top cover, a side wall and an inward protruding lower edge which are sequentially connected, the side wall is provided with an opening used for sliding into the barrel, the side wall of the barrel is provided with a limiting block, the inward protruding lower edge serves as a clamping tooth of the limiting block, the top cover is provided with a threaded hole penetrating through the top cover, a bolt is arranged in the threaded hole, and the gland is abutted to the sealing cover by rotating the bolt.
Preferably, the upper surface of the sealing cover is provided with a limiting groove matched with the bolt.
Preferably, the bottom of the bolt is in the shape of a segment of a sphere.
On the other hand, a method for simulating the development of the compact oil reservoir is also provided, the three-dimensional physical simulation experiment device is adopted for carrying out experiments, and the physical simulation experiments in three types of mining modes, namely synchronous injection and mining, asynchronous injection and mining and synchronous huff and puff, are carried out by arranging an injection well and a production well of the injection and production well pattern;
when a synchronous injection-production experiment is carried out, the porous medium model initially saturates oil, after confining pressure is added, an injection well injects a medium under a high-pressure condition, a production well is kept open, data of each pressure point and saturation measurement point and liquid production conditions are recorded, and a change diagram of a saturation field and a pressure field along with time is drawn; after the specified pore volume multiple is injected, closing an injection well and a production well, and after waiting for a specified period, repeating the synchronous injection and production process;
when an asynchronous injection and production experiment is carried out, the porous medium model is used for initially saturating oil, after confining pressure is added, a production well is closed, an injection well is injected for a certain time at different pressures and constant pressures according to experiment requirements, then the injection well is closed, after a specified period is waited, the production well is opened, data of each pressure point and saturation measurement point and the production liquid state are recorded, and a change graph of a saturation field and the pressure field along with time is drawn; repeating the above processes, and executing asynchronous injection and production processes of different rounds;
when a synchronous huff and puff experiment is carried out, the porous medium model is used for initially saturating oil, after confining pressure is added, the injection well and the production well are injected for a certain time at a pressure constant pressure set by the experiment, then the injection well and the production well are closed simultaneously, after a specified period is waited, the injection well and the production well are opened simultaneously, the data of each pressure point and saturation measurement point and the liquid production condition are recorded, and a change diagram of a saturation field and the pressure field along with the time is drawn; and repeating the above processes to execute synchronous throughput processes of different rounds.
The invention has the beneficial effects that:
according to the invention, the porous medium model with the pore permeability parameters meeting the experimental requirements can be selected according to the requirements, so that the errors of artificial factors such as sand filling and the like can be reduced, and the repeatability of the experiment is improved; by arranging the confining pressure cavity, confining pressure can be applied to the side surface and the bottom of the porous medium model, and the formation pressure condition is simulated; by arranging the pipeline sealing protection device, the electrode wire can be prevented from bearing pressure, and the test precision and the test accuracy are improved; by arranging the pipeline sealing protection device, the sealing gasket and the sealing ring, on one hand, the sealing performance can be improved, liquid leakage is prevented, and the pressure resistance of the pipeline sealing protection device is improved; on the other hand, the sealing gasket can prevent the surface of the porous medium model from channeling.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a three-dimensional physical simulation experiment apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of a three-dimensional physical simulation experiment apparatus according to the present invention;
FIG. 3 is a schematic view of the sealing cap of the embodiment of FIG. 2;
FIG. 4 is a schematic view of the pressurized three-dimensional physical simulation experiment apparatus according to the present invention;
FIG. 5 is a schematic perspective view of a pipeline sealing protector of the three-dimensional physical simulation experiment apparatus according to the present invention;
FIG. 6 is a schematic view of a partial structure of the pipeline sealing protection device of the three-dimensional physical simulation experiment device according to the present invention;
FIG. 7 is a schematic view of a partial structure of another embodiment of the pipeline sealing protection device of the three-dimensional physical simulation experiment apparatus according to the present invention;
FIG. 8 is a schematic structural diagram of a first vertical cavity of the three-dimensional physical simulation experiment apparatus according to the present invention;
FIG. 9 is a schematic top view of a porous medium model of the three-dimensional physical simulation experiment apparatus according to the present invention.
Reference numbers in the figures:
1-cylinder body, 2-sealing cover, 201-first cylinder section, 202-second circular table section, 203-third cylinder section, 204-fourth cylinder section, 3-rubber cylinder, 4-pipeline sealing protection device, 401-first vertical cavity 402-second parallel cavity 403-third vertical cavity, 404-through hole I, 405-through hole II, 406-shell I, 407-cavity I, 408-cavity II, 5-measuring electrode, 6-pressure monitoring pipeline, 7-injection-production well network, 8-sealing ring I, 9-confining pressure cavity, 10-confining pressure pressurizing port, 11-porous medium model, 12-sealing gasket, 13-sealing ring II, 14-channel, 15-injection-production well network pipeline, 16-pull ring, 17-solid rubber, 18-gland, 181-top cover, 182-side wall, 183-lower edge, 184-threaded hole, 185-bolt, 19-limiting block, 20-limiting groove and 21-rubber ring.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
It should be noted that, in the present application, the embodiments and the technical features of the embodiments may be combined with each other without conflict.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, the terms "first", "second", and the like are used for distinguishing similar objects, but not for describing a particular order or sequence order, unless otherwise specified. It is to be understood that the terms so used; the terms "upper", "lower", "left", "right", and the like are used generally with respect to the orientation shown in the drawings, or with respect to the component itself in a vertical, or gravitational orientation; likewise, "inner", "outer", and the like refer to the inner and outer relative to the contours of the components themselves for ease of understanding and description. The above directional terms are not intended to limit the present invention.
On one hand, as shown in fig. 1-9, the invention provides a three-dimensional physical simulation experiment device, which comprises a cylinder body 1, a sealing cover 2 matched with the cylinder body 1, a rubber cylinder 3, a pipeline sealing protection device 4, a measuring electrode 5, a pressure monitoring device and an injection-production well pattern 7.
The sealing cover 2 comprises a first cylindrical section 201, a second circular platform section 202 and a third cylindrical section 203 which are coaxial and connected in sequence, the outer diameter of the first cylindrical section 201 is matched with the inner diameter of the cylinder body 1, the end with the larger outer diameter of the second circular platform section 202 is connected with the first cylindrical section 201, the outer diameter of the end with the larger outer diameter is smaller than the inner diameter of the cylinder body 1, and the outer diameter of the third cylindrical section 203 is the same as the outer diameter of the end with the smaller outer diameter of the second circular platform section 202; a first sealing ring 8 is arranged between the cylinder body 1 and the first cylindrical section 201.
The upper end cover of packing element 3 is established second round platform section 202 with the surface of third cylinder section 203, packing element 3 with form between the barrel 1 and enclose and press the chamber 9, enclose and press the chamber 9 and correspond barrel 1 lateral wall and be equipped with and enclose pressure port 10, the interior bottom of packing element 3 is equipped with porous medium model 11, porous medium model 11 with be equipped with rubber seal 12 between the third cylinder section 203, sealed 12 except that can adopting rubber materials to make, can also adopt other sealing materials to make. Optionally, a second sealing ring 13 is arranged between the rubber sealing gasket 12 and the pipeline sealing protection device 4. In this embodiment, the rubber tube 3 is expanded with the sealing cover 2 by using the elasticity of the rubber tube 3. Optionally, a rubber ring 21 is arranged between the rubber cylinder 3 and the sealing cover 2 to enhance friction force and prevent the rubber cylinder from sliding off; optionally, a hoop (not shown in the figure) may be further provided on the outer surface of the rubber tube 3 corresponding to the second circular truncated cone section 202 and/or the third cylindrical section 203 to prevent the rubber tube 3 from slipping off. When the method is used, the pore-permeability parameters of the porous medium model 11 are selected according to a reservoir to be researched, such as low-permeability oil reservoirs, and the pore-permeability parameters of the porous medium model 11 need to meet the permeability of the low-permeability oil reservoirs so as to research the fluid seepage mechanism of the low-permeability oil reservoirs; by pumping liquid into the confining pressure cavity 9, confining pressure is applied to the side surface and the bottom of the porous medium model 11, so that the porous medium model is closer to the real formation pressure condition; the confining pressure applied by pumping liquid can be more stable, and the unstable confining pressure caused by the compressibility of gas in the adopted gas is avoided. When confining pressure is applied, the sealing gasket 12 is deformed under the influence of the confining pressure, and as shown in fig. 4, the pipeline sealing protection device is tightly wrapped, so that the displacement fluid is prevented from leaking and the pressure is prevented from leaking.
The pipeline sealing protection device 4 comprises a first vertical cavity 401, a second parallel cavity 402 and a third vertical cavity 403, wherein the sealing cover 2 and the rubber sealing gasket 12 are respectively provided with a passage 14 penetrating through the axial direction, the shape of the passage 14 is matched with that of the first vertical cavity 401, the first vertical cavity 401 is arranged in the passage 14, the upper end of the first vertical cavity is positioned in the passage 14 of the sealing cover 2, the lower end of the first vertical cavity is arranged in the porous medium model 11, the bottom of the first vertical cavity 401 in the porous medium model 11 is sealed, at least one first through hole 404 is radially arranged, one end of the second parallel cavity 402 is connected with the first through hole 404, the other end of the second parallel cavity 402 is sealed, the bottom of the second parallel cavity 402 in the axial direction is provided with at least one second through hole 405, one end of the third vertical cavity 403 is connected with the second through hole 405, the other end of the third vertical cavity 403 is sealed.
In a specific embodiment, the first vertical cavity 401, the second parallel cavity 402, and the third vertical cavity 403 of the pipeline seal protection device 4 are all cylindrical, and in this embodiment, optionally, the second parallel cavity 402 and the third vertical cavity 403 are respectively in threaded connection with the first through hole 404 and the second through hole 405, so that the assembly and disassembly are facilitated. In another specific embodiment, the cavity may also be a cavity in other shapes, such as a rectangular prism shape, a triangular prism shape, and the like.
The detection end of the measuring electrode 5 and the pressure monitoring pipeline 6 of the pressure monitoring device penetrate through the third vertical cavity 403 to be inserted into the porous medium model, and the other end of the measuring electrode 5 and the other end of the pressure monitoring pipeline 6 are both led out through the pipeline sealing protection device. Optionally, a plurality of measuring electrodes 5 and pressure monitoring lines 6 are arranged in each third vertical cavity 403, the detecting end of each detecting electrode 5 and the pressure monitoring line 6 of the pressure monitoring device extend into the porous medium model 11 at different depths, the resistances at different depths are obtained through the test of the detecting electrode 5, and the saturation of the porous medium model 11 is obtained through resistance calculation; the pressure at different depths is measured through the pressure monitoring line 6. It should be noted that, the number of the measuring electrodes 5 and the pressure monitoring pipelines 6 is set according to the experiment requirement, and the number of the electrode monitoring points is greater than the number of the pressure monitoring points under the general condition, the positions of the electrode monitoring points and the positions of the pressure monitoring points can be different (namely, the measuring electrodes 5 and the pressure monitoring pipelines 6 are set in different third vertical cavities or in the same third vertical cavity but at different levels), and the specific positions are set according to the experiment requirement. The measuring electrode and the pressure monitoring device are both in the prior art, and the specific structure is not described herein again.
The injection and production well pattern 7 comprises an injection well and a production well which are arranged on the porous medium model 11, and pipelines 15 of the injection and production well pattern are led out through the pipeline sealing protection device 4. The injection and production well pattern 7 is arranged by adopting a five-point method, a seven-point method, a nine-point method and other well patterns.
To facilitate the pulling out of the sealing cap 2, optionally the upper surface of the first cylindrical section 201 is provided with a pull ring 16. In another specific embodiment, optionally, a fourth cylindrical section 204 is disposed on the top of the first cylindrical section 201, and the outer diameter of the fourth cylindrical section 204 is larger than the outer diameter of the cylinder body 1, it should be noted that, in this structure, it needs to be ensured that the horizontal line of the top of the first cylindrical section 201 of the sealing cover 2 inserted after the porous medium model 11 is disposed is higher than the horizontal line of the top of the cylinder body 1, so as to ensure that the sealing cover 2, the sealing gasket 12, and the porous medium model 11 are tightly connected to each other, and avoid liquid leakage.
In order to prevent liquid in the porous medium model 11 from entering the pipeline sealing protection device 4 during injection and production and other experiments, optionally, solid glue 17 is disposed between the measuring electrode 5 and the third vertical cavity 403, between the pressure monitoring pipeline 6 and the third vertical cavity 403, and between the pipeline 15 of the injection and production well pattern and the third vertical cavity 403.
In a specific embodiment, as shown in fig. 6, the pipeline sealing protection device 4 includes a housing and a cavity, the cavity has a large volume, the measuring electrode 5, the pressure monitoring pipeline 6 and the pipeline 15 of the injection and production well pattern are all disposed in the cavity, and the cavity still has a margin, and the solid glue is only disposed at the connection of the housing and the measuring electrode 5, the pressure monitoring pipeline 6 and the pipeline 15 of the injection and production well pattern. In this embodiment, the cavity for accommodating the components is set to be large, which can facilitate the assembly of the components. In order to improve the strength of the pipeline sealing protection device, the shell can be made of materials with higher strength, such as titanium alloy.
In another specific embodiment, as shown in fig. 7, the second parallel cavity 402 and the third vertical cavity 403 of the pipeline seal protection device 4 are integrally formed into a sub-component located in the porous medium model 11 and are in threaded connection with the first vertical cavity 401, the sub-component includes a first housing 406, a first cavity 407 and a second cavity 408, the first cavity 407 is used for collecting the components such as the measuring electrode 5, the pressure monitoring pipeline 6 and the pipeline 15 of the injection and production well network, and the size of the first cavity 407 is matched with the size of the collected components or is slightly larger than the size of the collected components, and the solid glue 17 is arranged in the first cavity 407 after the collected components are accommodated; the second cavity 408 is provided with a plurality of parts, the number and the size of the parts are respectively matched with those of the parts, the measuring electrodes 5, the pressure monitoring pipelines 6 and the pipelines 15 of the injection and production well pattern are respectively accommodated, and the solid glue 17 is arranged in the second cavity 408 after the parts are accommodated. In this embodiment, the volumes of the first cavity 407 and the second cavity 408 of the accommodating component are set to be small, and the accommodating component is sealed by the solid glue 17, so that the strength of the pipeline sealing protection device 4 can be improved while the sealing is ensured.
In order to improve the pressure resistance and high temperature resistance of the present invention, optionally, the electrode wire of the measuring electrode 5 is a high temperature resistant electrode wire such as a fluoroplastic wire, the rubber sleeve 3 is made of a high temperature resistant material such as fluororubber, and the cylinder body 1 and the sealing cover 2 are made of a high temperature resistant material such as stainless steel. Therefore, higher formation temperature can be simulated, and the application range of the invention is expanded.
In a specific embodiment, the three-dimensional physical simulation experiment apparatus further comprises a pressing cover 18 for preventing the sealing cover 2 from sliding out of the cylinder 1.
In a specific embodiment, the gland 18 includes a top cap 181, a side wall 182, and an inwardly protruding lower edge 183, which are connected in sequence, the side wall 182 is provided with an opening for sliding into the cylinder 1, the side wall of the cylinder 1 is provided with a stopper 19, the inwardly protruding lower edge 183 serves as a latch of the stopper 19, a threaded hole 184 penetrating through the top cap 181 is provided at the center of the top cap 181, a bolt 185 is provided in the threaded hole 184, and the gland 18 abuts against the sealing cap 2 by rotating the bolt 185.
Optionally, the upper surface of the sealing cover 2 is provided with a limiting groove 20 matched with the bolt 185, and the bottom of the bolt 185 is in a segment shape.
Optionally, the limiting block 19 is arranged at the middle-lower position of the side wall of the barrel 1, so that the condition of heavy head and light foot can be effectively avoided, and the stability of the invention is enhanced.
On the other hand, the invention also provides a method for simulating the development of the compact oil reservoir, which adopts any one of the three-dimensional physical simulation experiment device to carry out experiments, and carries out any one of three exploitation modes of synchronous injection exploitation, asynchronous injection exploitation and synchronous huff and puff through setting an injection well and an extraction well of the injection and exploitation well pattern.
When a synchronous injection-production experiment is carried out, the porous medium model initially saturates oil, after confining pressure is added, an injection well injects a medium under a high-pressure condition, a production well is kept open, data of each pressure point and saturation measurement point and liquid production conditions are recorded, and a change diagram of a saturation field and a pressure field along with time is drawn; after the specified pore volume multiple is injected, the injection well and the production well are closed, and after the specified period is waited, the synchronous injection and production process is repeated.
When an asynchronous injection and production experiment is carried out, the porous medium model is used for initially saturating oil, after confining pressure is added, a production well is closed, an injection well is injected for a certain time at different pressures and constant pressures according to experiment requirements, then the injection well is closed, after a specified period is waited, the production well is opened, data of each pressure point and saturation measurement point and the production liquid state are recorded, and a change graph of a saturation field and the pressure field along with time is drawn; repeating the above processes, and executing asynchronous injection and production processes of different rounds.
When a synchronous huff and puff experiment is carried out, the porous medium model is used for initially saturating oil, after confining pressure is added, the injection well and the production well are injected for a certain time at a pressure constant pressure set by the experiment, then the injection well and the production well are closed simultaneously, after a specified period is waited, the injection well and the production well are opened simultaneously, the data of each pressure point and saturation measurement point and the liquid production condition are recorded, and a change diagram of a saturation field and the pressure field along with the time is drawn; and repeating the above processes to execute synchronous throughput processes of different rounds.
And during the three different injection-mining experiments, the number of times of repetition is the number of times of handling of the simulated actual mine field, the number of times of handling is set according to the experiment requirements, and the recovery condition of the simulated actual mine field is finally obtained after the repetition is completed.
In addition, when the experiment for simulating the development of the unconventional oil and gas reservoir is carried out, a porous medium model with the permeability required by the experiment is selected according to the experiment requirement. The porous medium model can simulate the multilayer condition, and the number of the measuring electrodes is correspondingly increased or decreased according to the number of the layers, for example, if the production layer position in the longitudinal direction has 3 layers, 3 pairs of saturation measuring electrodes need to be placed at one saturation measuring point. Correspondingly, the injection-production well can perform injection-production according to the layer position according to the arrangement of the layer position, the injection-production shaft in the third vertical section has the length which determines the depth according to the experimental design, and the shaft is perforated at the layer position needing to be produced. For example, when there are 3 production levels in the longitudinal direction, if three levels are injected simultaneously, the length of the shaft is the depth of the middle of the third level, the shaft is perforated at all three levels, and if only one layer is produced, only the corresponding level is perforated. The number of the pressure monitoring pipelines is also selected according to the requirement, and it is to be noted that, in general, the number of the injection and production well patterns and the number of the pressure monitoring points are less than that of the electrode monitoring points.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A three-dimensional physical simulation experiment device is characterized by comprising a cylinder body, a sealing cover matched with the cylinder body, a rubber cylinder, a pipeline sealing protection device, a measuring electrode, a pressure monitoring device and an injection and production well pattern;
the sealing cover comprises a first cylindrical section, a second circular truncated cone section and a third cylindrical section which are coaxial and sequentially connected, the outer diameter of the first cylindrical section is matched with the inner diameter of the barrel, the end with the larger outer diameter of the second circular truncated cone section is connected with the first cylindrical section, the outer diameter of the end with the larger outer diameter of the second circular truncated cone section is smaller than the inner diameter of the barrel, and the outer diameter of the third cylindrical section is the same as the outer diameter of the end with the smaller outer diameter of the second circular truncated cone section; a first sealing ring is arranged between the cylinder body and the first cylindrical section;
the upper end of the rubber cylinder is sleeved on the outer surfaces of the second circular table section and the third cylindrical section, a confining pressure cavity is formed between the rubber cylinder and the cylinder body, a confining pressure pressurizing opening is formed in the side wall of the cylinder body corresponding to the confining pressure cavity, a porous medium model is arranged at the inner bottom of the rubber cylinder, and a rubber sealing gasket is arranged between the porous medium model and the third cylindrical section;
the pipeline sealing protection device comprises a first vertical cavity, a second parallel cavity and a third vertical cavity, wherein axial through channels are arranged on the sealing cover and the rubber sealing gasket, the shape of each channel is matched with that of the first vertical cavity, the first vertical cavity is arranged in each channel, the upper end of each channel is positioned in each channel of the sealing cover, the lower end of each channel is arranged in the porous medium model, the bottom of each channel is sealed, at least one first through hole is formed in the radial direction of the first vertical cavity in the porous medium model, one end of each second parallel cavity is connected with the corresponding first through hole, the other end of each second parallel cavity is sealed, at least one second through hole is formed in the bottom of each second parallel cavity in the axial direction, one end of each third vertical cavity is connected with the corresponding second through hole, and the other end of each third vertical cavity is sealed;
the detection end of the measuring electrode and a pressure monitoring pipeline of the pressure monitoring device penetrate through the third vertical cavity to be inserted into the porous medium model, and the other end of the measuring electrode and the other end of the pressure monitoring pipeline are both led out through the pipeline sealing protection device;
the injection and production well pattern comprises an injection well and a production well, the injection well and the production well are arranged on the porous medium model, and pipelines of the injection well and the production well are led out through the pipeline sealing protection device.
2. The three-dimensional physical simulation experiment device of claim 1, wherein the upper surface of the first cylindrical section is provided with a pull ring.
3. The three-dimensional physical simulation experiment device according to claim 1, wherein a second sealing ring is arranged between the pipeline sealing protection device and the rubber sealing gasket.
4. The three-dimensional physical simulation experiment device according to claim 1, wherein solid glue is arranged between the measuring electrode and the third vertical cavity, between the pressure monitoring pipeline and the third vertical cavity, and between the pipeline of the injection-production well pattern and the third vertical cavity.
5. The three-dimensional physical simulation experiment device according to claim 1, wherein the electrode wire of the measuring electrode is made of fluoroplastic wire, the rubber cylinder is made of fluororubber, and the cylinder body and the sealing cover are made of stainless steel.
6. The three-dimensional physical simulation experiment device according to any one of claims 1 to 5, further comprising a gland for preventing the sealing cover from sliding out of the cylinder.
7. The three-dimensional physical simulation experiment device according to claim 6, wherein the gland comprises a top cover, a side wall and an inwardly protruding lower edge which are connected in sequence, the side wall is provided with an opening for sliding into the barrel, the side wall of the barrel is provided with a limiting block, the inwardly protruding lower edge is used as a latch of the limiting block, the top cover is provided with a threaded hole penetrating through the top cover, a bolt is arranged in the threaded hole, and the gland is abutted to the sealing cover by rotating the bolt.
8. The three-dimensional physical simulation experiment device according to claim 7, wherein the upper surface of the sealing cover is provided with a limiting groove matched with the bolt.
9. The three-dimensional physical simulation experiment device of claim 8, wherein the bottom of the bolt is in the shape of a segment of a sphere.
10. A method for simulating the development of a tight oil reservoir, which is characterized in that the three-dimensional physical simulation experiment device of any one of claims 1 to 9 is used for carrying out experiments, and the physical simulation experiment in three types of mining modes, namely synchronous injection and mining, asynchronous injection and mining and synchronous throughput is carried out by arranging an injection well and a production well of the injection and production well pattern;
when a synchronous injection-production experiment is carried out, the porous medium model initially saturates oil, after confining pressure is added, an injection well injects a medium under a high-pressure condition, a production well is kept open, data of each pressure point and saturation measurement point and liquid production conditions are recorded, and a change diagram of a saturation field and a pressure field along with time is drawn; after the specified pore volume multiple is injected, closing an injection well and a production well, and after waiting for a specified period, repeating the synchronous injection and production process;
when an asynchronous injection and production experiment is carried out, the porous medium model is used for initially saturating oil, after confining pressure is added, a production well is closed, an injection well is injected for a certain time at different pressures and constant pressures according to experiment requirements, then the injection well is closed, after a specified period is waited, the production well is opened, data of each pressure point and saturation measurement point and the production liquid state are recorded, and a change graph of a saturation field and the pressure field along with time is drawn; repeating the above processes, and executing asynchronous injection and production processes of different rounds;
when a synchronous huff and puff experiment is carried out, the porous medium model is used for initially saturating oil, after confining pressure is added, the injection well and the production well are injected for a certain time at a pressure constant pressure set by the experiment, then the injection well and the production well are closed simultaneously, after a specified period is waited, the injection well and the production well are opened simultaneously, the data of each pressure point and saturation measurement point and the liquid production condition are recorded, and a change diagram of a saturation field and the pressure field along with the time is drawn; and repeating the above processes to execute synchronous throughput processes of different rounds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040652.XA CN111963165B (en) | 2020-09-28 | 2020-09-28 | Three-dimensional physical simulation experiment device and method for simulating dense oil reservoir development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040652.XA CN111963165B (en) | 2020-09-28 | 2020-09-28 | Three-dimensional physical simulation experiment device and method for simulating dense oil reservoir development |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111963165A CN111963165A (en) | 2020-11-20 |
| CN111963165B true CN111963165B (en) | 2022-02-01 |
Family
ID=73387027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011040652.XA Active CN111963165B (en) | 2020-09-28 | 2020-09-28 | Three-dimensional physical simulation experiment device and method for simulating dense oil reservoir development |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111963165B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2480947A1 (en) * | 1980-04-21 | 1981-10-23 | Elf Aquitaine | EROSION PROBE WITH QUICK RELEASE |
| CN201437724U (en) * | 2009-06-22 | 2010-04-14 | 中国石油天然气股份有限公司 | Three-dimensional high-temperature high-pressure oil-gas migration physical simulation device |
| WO2013158120A1 (en) * | 2012-04-20 | 2013-10-24 | Halliburton Energy Services, Inc. | High pressure rock core testing |
| CN203742583U (en) * | 2014-04-03 | 2014-07-30 | 中国地质大学（北京） | Three dimensional horizontal well water controlling physics simulation experiment device |
| CN104500013A (en) * | 2014-12-17 | 2015-04-08 | 中国石油大学(北京) | Multifunctional three-dimensional physical simulation experimental apparatus for thermal recovery by steam injection |
| CN206863745U (en) * | 2017-05-08 | 2018-01-09 | 西安石油大学 | A kind of intelligent spring-backed quill protective case |
| CN109372499A (en) * | 2018-11-02 | 2019-02-22 | 广州海洋地质调查局 | A kind of geologic reservoir radial flow simulation system |
| CN209761405U (en) * | 2019-01-31 | 2019-12-10 | 中国石油天然气股份有限公司 | Mechanical sand-proof pipe column |
| CN111022010A (en) * | 2020-01-02 | 2020-04-17 | 西南石油大学 | Three-dimensional heterogeneous oil reservoir multi-well-grid mode water-drive physical simulation experiment device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO325203B1 (en) * | 2005-01-06 | 2008-02-25 | Reslink As | Cable protective rudder section, method for arranging at least ± n cable protective outer rudder section and use of a device for protecting the cable |
-
2020
- 2020-09-28 CN CN202011040652.XA patent/CN111963165B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2480947A1 (en) * | 1980-04-21 | 1981-10-23 | Elf Aquitaine | EROSION PROBE WITH QUICK RELEASE |
| CN201437724U (en) * | 2009-06-22 | 2010-04-14 | 中国石油天然气股份有限公司 | Three-dimensional high-temperature high-pressure oil-gas migration physical simulation device |
| WO2013158120A1 (en) * | 2012-04-20 | 2013-10-24 | Halliburton Energy Services, Inc. | High pressure rock core testing |
| CN203742583U (en) * | 2014-04-03 | 2014-07-30 | 中国地质大学（北京） | Three dimensional horizontal well water controlling physics simulation experiment device |
| CN104500013A (en) * | 2014-12-17 | 2015-04-08 | 中国石油大学(北京) | Multifunctional three-dimensional physical simulation experimental apparatus for thermal recovery by steam injection |
| CN206863745U (en) * | 2017-05-08 | 2018-01-09 | 西安石油大学 | A kind of intelligent spring-backed quill protective case |
| CN109372499A (en) * | 2018-11-02 | 2019-02-22 | 广州海洋地质调查局 | A kind of geologic reservoir radial flow simulation system |
| CN209761405U (en) * | 2019-01-31 | 2019-12-10 | 中国石油天然气股份有限公司 | Mechanical sand-proof pipe column |
| CN111022010A (en) * | 2020-01-02 | 2020-04-17 | 西南石油大学 | Three-dimensional heterogeneous oil reservoir multi-well-grid mode water-drive physical simulation experiment device |
Non-Patent Citations (6)
| Title |
|---|
| An Experimental Approach of Influences of Perforated Length and Fractures on Horizontal Well Productivity;S.A.SHEDID,etc;《Jounrnal of Canadian Petroleum Technology》;20060531;第45卷(第5期);第43-48页 * |
| Experimental and Numerical Studies of Gas/Oil Multicontact Miscible Displacements in Homogeneous and Crossbedded Porous Media;Y.M.Al-Wahaibi,etc;《the 2005 SPE Reservoir Simulation Symposium》;20050202;第62-76页 * |
| Permeability Characterization on Tight Gas Samples Using Pore Pressure Oscillation Method;R.J. Knabe，etc;《Petrophysics》;20111201;第52卷(第6期);第437-443页 * |
| 基于虚拟仪器技术的油藏物理模拟试验装置测控系统开发;华陈权等;《化工自动化及仪表》;20120630;第39卷(第6期);第750-753页 * |
| 断块油藏注采耦合物理模拟实验;孙志刚等;《石油地质与工程》;20190525;第33卷(第3期);第68-70页 * |
| 纵向非均质油藏水驱油实验研究;于春生等;《西南石油大学学报（自然科学版）》;20090228;第31卷(第1期);第84-86页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111963165A (en) | 2020-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103556993B (en) | Low permeability oil field plane Five-point method pattern carbon dioxide flooding emulation experiment analogy method | |
| CN102094642B (en) | Intraformationally heterogeneous model oil-water displacement efficiency evaluation system | |
| CN106840977A (en) | Slurry filling imitation device | |
| CN102720476B (en) | O-shaped well physical simulation experiment device | |
| CN102797458B (en) | For the three-dimensional simulation device of bottom and edge water | |
| CN201273190Y (en) | Triaxial-stress multi-pressure test point rock core reservoir simulation device | |
| CN201803962U (en) | Heterogeneous model computed tomography (CT) scan simulation device | |
| CN106814016A (en) | The analogy method of slurry filling imitation device | |
| CN112627783B (en) | Experimental device for low-frequency pressure transformation improves gas injection recovery ratio | |
| CN105178927B (en) | A kind of displacement simulation experimental provision and system | |
| CN105527379B (en) | Three hole rock core kettles, Oil in Super-low Permeability Reservoirs liquid damage evaluation experimental provision and method | |
| CN203614095U (en) | Cement sheath cementing strength evaluation device | |
| CN107725046A (en) | The apparatus and method of capillary force during a kind of evaluation reservoir water | |
| CN109211753A (en) | More of rock, multiphase porous flow experimental provision under a kind of perturbation action | |
| CN105334142A (en) | Experiment device for simulating shield mud membrane formation | |
| CN105842425A (en) | Core holding unit and dynamic filtrate loss test unit | |
| CN110924907B (en) | Multi-section pressure measurement water-gas alternating oil extraction experimental device and method for CT scanning | |
| CN107014980B (en) | A kind of semi-open type core holding unit | |
| US9939419B2 (en) | Modular sensed annular well apparatus for cement testing | |
| CN109236269A (en) | A kind of water breakthrough influences the test device and method of cementing quality | |
| CN110714756A (en) | High-temperature high-pressure X-CT scanning fracture-cave physical model | |
| CA3048262C (en) | Measurement cell and associated measurement method | |
| CN113029910B (en) | Rock core holder matched with rock seepage real-time imaging system and method thereof | |
| CN111963165B (en) | Three-dimensional physical simulation experiment device and method for simulating dense oil reservoir development | |
| CN110905496B (en) | Gas drive overlap simulation device and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |