CN114607329A - Gas injection auxiliary thermal recovery simulation experiment device and method - Google Patents
Gas injection auxiliary thermal recovery simulation experiment device and method Download PDFInfo
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- CN114607329A CN114607329A CN202011394282.XA CN202011394282A CN114607329A CN 114607329 A CN114607329 A CN 114607329A CN 202011394282 A CN202011394282 A CN 202011394282A CN 114607329 A CN114607329 A CN 114607329A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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Abstract
The invention provides a gas injection auxiliary thermal recovery simulation experiment device and a gas injection auxiliary thermal recovery simulation experiment method.A gas injection module is arranged, wet steam with adjustable injection speed, pressure and dryness is injected into a long pipe physical model, and gas with adjustable injection speed is injected into the long pipe physical model so as to simulate the injection of steam and gas in the gas injection auxiliary thermal recovery process; by arranging the long pipe physical model, an oil reservoir stratum during actual gas injection auxiliary thermal recovery can be simulated; the long-tube physical model comprises a model cylinder and a simulated oil layer, and the simulated oil layer is arranged to simulate an oil reservoir by arranging a simulated plane and a longitudinal non-homogeneity of the model cylinder; through setting up output measurement module, gather the fluid of long tube physical model output, measure the fluid of long tube physical model output, simulate actual oil gas exploitation, accomplish the supplementary thermal recovery simulation experiment of gas injection. In conclusion, the method can effectively simulate the gas injection auxiliary thermal recovery process, further explore the oil displacement mechanism of the gas injection auxiliary thermal recovery and improve the recovery ratio.
Description
Technical Field
The invention relates to the technical field of thermal oil recovery, in particular to a gas injection auxiliary thermal recovery simulation experiment device and method.
Background
Through years of development, most of main force blocks enter the middle and later stages at present, the problems of low formation pressure, finger-entering channeling, low sweep efficiency, low oil-gas ratio, gradual decrease and acceleration of yield and the like are faced, the conventional steam injection thermal oil recovery technology cannot meet the requirement of efficient economic development of oil fields, and the key problem to be solved at present is how to improve the steam injection thermal oil recovery development effect.
The gas injection auxiliary thermal recovery is a new technology for improving the development effect of the steam injection thermal recovery, has the advantages of wide gas source, no pollution, low cost and the like, and in the process of steam injection, the action mechanism is more complicated due to the addition of gas, so that an indoor physical simulation experiment device is used for deeply researching the gas injection auxiliary thermal recovery mechanism. However, the prior art can only carry out steam injection thermal recovery ratio physical simulation, but cannot carry out a gas injection auxiliary thermal recovery physical simulation experiment.
Disclosure of Invention
The embodiment of the invention provides a gas injection auxiliary thermal recovery simulation experiment device, which is used for effectively simulating gas injection auxiliary thermal recovery and comprises:
the gas injection module is used for injecting wet steam with adjustable injection speed, pressure and dryness into the long pipe physical model and injecting gas with adjustable injection speed into the long pipe physical model;
the long-tube physical model is used for simulating an oil reservoir stratum during actual gas injection assisted thermal recovery; the long-tube physical model comprises a model cylinder and a simulated oil layer, wherein the model cylinder is used for simulating plane and longitudinal heterogeneity, and the simulated oil layer is used for simulating an oil reservoir;
and the output metering module is used for collecting the fluid output by the long pipe physical model and metering the fluid output by the long pipe physical model.
The embodiment of the invention also provides a simulation experiment method for gas injection assisted thermal recovery, which is used for effectively simulating gas injection assisted thermal recovery and comprises the following steps:
injecting wet steam with preset injection speed, pressure and dryness and gas with preset injection speed into the long pipe physical model by using a gas injection module;
collecting the fluid produced by the long-tube physical model by using a production metering module, and metering the fluid produced by the long-tube physical model;
and analyzing to obtain the production dynamic characteristics of the gas injection auxiliary thermal recovery simulation experiment process according to the fluid metering result of the output metering module.
In the embodiment of the invention, by arranging the gas injection module, wet steam with adjustable injection speed, pressure and dryness is injected into the long pipe physical model, and gas with adjustable injection speed is injected into the long pipe physical model so as to simulate the injection of steam and gas in the gas injection auxiliary thermal recovery process; by arranging the long pipe physical model, an oil reservoir stratum during actual gas injection auxiliary thermal recovery can be simulated; the long-tube physical model comprises a model cylinder and a simulated oil layer, and the simulated oil layer is arranged to simulate an oil reservoir by arranging a simulated plane and a longitudinal non-homogeneity of the model cylinder; through setting up output measurement module, gather the fluid of long tube physical model output, measure the fluid of long tube physical model output, simulate actual oil gas exploitation, accomplish the supplementary thermal recovery simulation experiment of gas injection. In conclusion, the method can effectively simulate the gas injection auxiliary thermal recovery process, further explore the oil displacement mechanism of the gas injection auxiliary thermal recovery and improve the recovery ratio.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a gas injection assisted thermal recovery simulation experiment apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the gas injection module 101 according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the long pipe physical model 102 in an embodiment of the present invention.
FIG. 4 is a schematic diagram of the structure of the yield metering module 103 according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a data acquisition and image processing module according to an embodiment of the present invention.
FIG. 6 is a schematic structural diagram of a physical model thermal module according to an embodiment of the present invention.
FIG. 7 is a schematic illustration of the position of the mold support in an embodiment of the present invention.
FIG. 8 is a schematic diagram of a gas injection assisted thermal recovery simulation experiment in an embodiment of the present invention.
FIG. 9 is a schematic diagram of a gas injection assisted thermal recovery simulation experiment in accordance with an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a gas injection auxiliary thermal recovery simulation experiment device, which is used for effectively simulating gas injection auxiliary thermal recovery and comprises the following components in percentage by weight as shown in figure 1:
the gas injection module 101 is used for injecting wet steam with adjustable injection speed, pressure and dryness into the long pipe physical model 102 and injecting gas with adjustable injection speed into the long pipe physical model 102;
the long-tube physical model 102 is used for simulating an oil reservoir stratum during actual gas injection assisted thermal recovery; the long-tube physical model 102 comprises a model cylinder and a simulated oil layer, wherein the model cylinder is used for simulating plane and longitudinal heterogeneity, and the simulated oil layer is used for simulating an oil reservoir;
and the yield metering module 103 is used for collecting the fluid produced by the long pipe physical model 102 and metering the fluid produced by the long pipe physical model 102.
In the embodiment of the invention, by arranging the gas injection module, wet steam with adjustable injection speed, pressure and dryness is injected into the long-tube physical model, and gas with adjustable injection speed is injected into the long-tube physical model so as to simulate the injection of steam and gas in the gas injection auxiliary thermal recovery process; by arranging the long pipe physical model, an oil reservoir stratum during actual gas injection auxiliary thermal recovery can be simulated; the long-tube physical model comprises a model cylinder and a simulated oil layer, and the simulated oil layer is arranged to simulate an oil reservoir by arranging a simulated plane and a longitudinal non-homogeneity of the model cylinder; through setting up output measurement module, gather the fluid of long tube physical model output, measure the fluid of long tube physical model output, simulate actual oil gas exploitation, accomplish the supplementary thermal recovery simulation experiment of gas injection. In conclusion, the method can effectively simulate the gas injection auxiliary thermal recovery process, further explore the oil displacement mechanism of the gas injection auxiliary thermal recovery and improve the recovery ratio.
In specific implementation, the structure of the gas injection module 101 is shown in fig. 2, and includes:
a steam generator 201, a gas source 202, a regulator 203, a gas flow meter 204, and a controller 205;
a steam generator 201 for generating wet steam with adjustable injection speed, pressure and dryness; in an embodiment, the gas injection module 101 further comprises a high precision flow pump connected to the steam generator 201 for supplying the steam generator 201 with water required for producing steam.
A gas source 202 for providing a gas to aid production;
a regulator 203 for regulating the pressure of the gas provided by the gas source 202;
the gas flowmeter 204 is used for adjusting the flow rate of the gas of which the pressure is adjusted by the regulator 203 and controlling the amount of the gas injected into the long pipe physical model 102;
a controller 205 for mixing the wet steam and the gas;
after the gas source 202, the regulator 203 and the gas flowmeter 204 are connected in sequence through pipelines, the gas source, the regulator 203 and the gas flowmeter 204 are connected with the steam generator 201 together to be connected with the controller 205, and the controller 205 is connected with the injection end cover of the long-tube physical model 102 through a pipeline.
Specifically, the injection speed of the steam is in the range of 20cm3/min～400cm3Min, temperature range120-350 ℃, the dryness range is 20-80 percent, and the injection speed range of the auxiliary mining gas is 20cm3/min～100cm3/min。
In a specific embodiment, as shown in fig. 3, the specific structure of the long pipe physical model 102 further includes, on the basis of the model cylinder 301 and the simulated oil layer:
an upper end cover 302 and a lower end cover 303 for covering the model cylinder 301; in one embodiment, the geometry of the model cylinder 301 is: 10cm (diameter of the bottom surface of the cylinder) multiplied by 150cm (height of the cylinder), and the highest working pressure is 50 MPa.
The heat insulation layer 304 is lined on the inner wall of the model cylinder 301 and used for preventing heat inside the model cylinder 301 from being dissipated outwards; in a specific embodiment, the heat insulation layer 304 is 60mm thick, can resist 1000 ℃, has low thermal conductivity, and can prevent oil and corrosion.
The graphite cushion is used for sealing the upper end cover 302, the lower end cover 303 and the model cylinder 301;
and the fastening bolt is used for pressing the graphite pads among the upper end cover 302, the lower end cover 303 and the model cylinder 301 to achieve the sealing effect.
Specifically, the oil reservoir is simulated by adopting a mode of mixing sand with crude oil for filling or filling quartz sand and then injecting saturated crude oil into the simulated oil layer. The upper end cover 302 is provided with a plug for sand filling and sand discharging, and is used for compacting the sand filling. In order to facilitate the loading and unloading of sand and the manual sampling function, the model cylinder 301, the upper end cap 302 and the lower end cap 303 are provided with openings 305 for the crude oil inlet and outlet.
In an embodiment, the output metering module 103 is specifically configured to cool the output fluid, perform gas-liquid separation, collect the output fluid, and meter the output oil, gas, and water, thereby analyzing the dynamic characteristics of the production. The structure of the yield metering module 103 is shown in fig. 4, and includes:
a return pressure control valve 401, a gas-liquid separator 402, a liquid collector 403, and a gas flow meter 404;
one end of the back pressure control valve 401 is connected with a fluid outlet of the long-tube physical model 102, and the other end of the back pressure control valve is connected with the gas-liquid separator 402 through a pipeline and then respectively connected with the liquid collector 403 and the gas flowmeter 404 through pipelines;
the backpressure control valve 401 is used for controlling the fluid outlet pressure of the long pipe physical model 102, and controlling the fluid outlet pressure of the long pipe physical model 102 within a certain range to ensure the output of gas and liquid;
the gas-liquid separator 402 is used for separating gas and liquid produced by the long pipe physical model 102;
the liquid collector 403 is used for collecting the liquid separated by the gas-liquid separator 402;
the gas flow meter 404 is used for measuring the gas separated by the gas-liquid separator 402 in real time and monitoring the tail gas, so as to perform real-time online monitoring on the produced gas.
In order to master the gas injection assisted thermal recovery simulation experiment process in real time, the embodiment of the invention further provides a gas injection assisted thermal recovery simulation experiment device, which further comprises the following components on the basis of fig. 1: and the data acquisition and image processing module is used for measuring and acquiring temperature and pressure signals of a simulated oil layer of the long pipe physical model 102 in the gas injection auxiliary thermal recovery simulation experiment process, and processing the acquired temperature and pressure signals to generate a field diagram.
In specific implementation, the simple structure of the data acquisition and image processing module is shown in fig. 5, and includes:
a plurality of temperature sensors 501 installed in the simulated oil layer for measuring the temperature of the simulated oil layer; in the specific embodiment, a K-type armored thermocouple is selected, the specification is phi 2.0mm, the temperature resistance is 1000 ℃, and the precision is 0.2 grade.
A plurality of pressure sensors 502 installed in the simulated oil layer for measuring a pressure of the simulated oil layer; in a specific embodiment, a phi 8 multiplied by 1mm high-temperature heat-resistant steel pipe is selected and connected with a 1000psi sensor (1-5 v), and the precision is 0.11% FS.
The data acquisition unit 503 is used for collecting temperature signals measured by the plurality of temperature sensors 501 and pressure signals measured by the plurality of pressure sensors 502 and transmitting the temperature signals and the pressure signals to the image processing unit;
and an image processing unit 504, configured to process the received temperature signal and pressure signal to generate a real-time field map.
In a specific embodiment, 8 pressure measuring points and sampling ports in the long pipe physical model 102 are arranged at intervals of 20cm, 29 × 3 to 87 thermocouples are distributed in the temperature sensor, and 3 thermocouples are uniformly distributed on the cross section of each thermocouple distribution point.
In order to simulate the initial temperature condition of the oil reservoir, that is, the temperature before the oil reservoir is exploited, the gas injection assisted thermal recovery simulation experiment apparatus provided in the embodiment of the present invention further includes: and the physical model heat preservation module is used for controlling the temperature of the long pipe physical model 102 so as to simulate the initial temperature condition of the oil reservoir.
The specific structure of the physical model heat-insulating module is shown in fig. 6, and comprises:
a plurality of temperature sensors 601 for measuring the temperature of the insulating jacket 603;
the temperature controller 602 is used for adjusting the heating temperature of the heat insulating sleeve 603 by the heater 604 according to the outside temperature of the long pipe physical model 102 measured by the plurality of temperature sensors 601 so as to control the temperature of the heat insulating sleeve 603 within a preset range;
the heat insulation sleeve 603 is wrapped on the outer side of the long pipe physical model 102 and used for insulating the long pipe physical model 102;
and a heater 604 for heating the insulating sheath 603.
In order to realize radial 360 ° turning of the long pipe physical model 102 and simulate any angle of dip, the gas injection assisted thermal recovery simulation experiment apparatus in the specific embodiment is shown in fig. 7, and further includes: the model support 701 is used for supporting and driving the long pipe physical model 12 to radially turn over, so that the long pipe physical model 102 and the horizontal plane form a preset included angle, and stratum inclination angles at any angles are simulated.
The gas injection auxiliary thermal recovery simulation experiment device provided by the embodiment of the invention can be used for developing gas injection auxiliary steam huff and puff, steam drive and SAGD physical simulation experiment researches, recognizing a gas injection auxiliary thermal recovery mechanism, optimizing parameters such as gas injection type, gas-steam ratio, injection mode and the like, and providing technical support for oil reservoir engineering design.
Based on the same inventive concept, an embodiment of the present invention further provides a gas injection-assisted thermal recovery simulation experiment method, wherein the principle of the problem solved by the gas injection-assisted thermal recovery simulation experiment method is similar to that of the gas injection-assisted thermal recovery simulation experiment apparatus, so that the implementation of the gas injection-assisted thermal recovery simulation experiment method can be referred to the implementation of the gas injection-assisted thermal recovery simulation experiment apparatus, and repeated details are not repeated, as shown in fig. 8, the method includes:
step 801: injecting wet steam with preset injection speed, pressure and dryness and gas with preset injection speed into the long pipe physical model 102 by using the gas injection module 101;
step 802: collecting the fluid produced by the long pipe physical model 102 by using a production metering module 103, and metering the fluid produced by the long pipe physical model 102;
step 803: and analyzing to obtain the production dynamic characteristics of the gas injection auxiliary thermal recovery simulation experiment process according to the fluid metering result of the output metering module 103.
The experimental method for simulating gas injection assisted thermal recovery in the specific embodiment, as shown in fig. 9, further includes, on the basis of fig. 8:
step 901: in the process of the gas injection assisted thermal recovery simulation experiment, a data acquisition and image processing module is used for measuring and acquiring temperature and pressure signals of a simulated oil layer in the long pipe physical model 102, and the acquired temperature and pressure signals are processed to generate a field diagram.
In a specific embodiment, a gas injection assisted thermal recovery simulation experiment method is further provided, and on the basis of fig. 8, the method further includes: and (3) utilizing the physical model heat preservation module to control the temperature of the long-pipe physical model 102 and simulate the initial temperature condition of the oil reservoir.
In a specific embodiment, the gas injection assisted thermal recovery simulation experiment method further comprises: the long pipe physical model 102 is rotated to simulate the dip angles of the strata at different angles.
In the specific embodiment, the experiment process of the gas injection assisted thermal recovery simulation comprises the following steps:
the method comprises the steps of firstly, establishing a long pipe physical model 102 for gas injection auxiliary thermal recovery, installing a model rear end cover, temperature measuring points and pressure measuring points, tightening bolts for sealing, determining the grain size and proportion of sand for the model according to the model permeability, uniformly mixing and filling the model, tightly filling the model sand, installing a model front end cover, and tightening bolts for sealing.
Secondly, connecting the components: the gas injection module 101 is connected with the injection end of the long pipe physical model 102, the output metering module 103 is connected with the output end of the long pipe physical model 102, and the pressure sensor, the temperature sensor and the data acquisition and image processing module are sequentially connected with the microcomputer.
And thirdly, establishing an initial temperature condition of the oil reservoir. And starting the model heat-insulating unit, heating the model body, controlling the model body at constant temperature, and simulating the initial temperature condition of the oil reservoir.
And fourthly, simulating saturated water of an oil layer, connecting a vacuumizing system, sucking experimental water into the long pipe physical model 102 under negative pressure after the vacuum degree reaches 133.3Pa and continuously vacuumizing for 2h, recording the volume of the saturated water, and calculating the porosity of the model.
And fifthly, simulating oil layer saturated oil, injecting experimental oil from the saturated oil well into the long pipe physical model 102 at a low speed (not more than 0.3ml/min) to obtain the initial oil saturation and initial pressure conditions of the simulated oil layer.
And sixthly, injecting gas and steam for oil extraction, wherein the gas and the steam are mixed and injected into the oil extraction according to the scheme design proportion, and the output metering module 103 collects output fluid.
And seventhly, separating the produced fluid, measuring the produced oil quantity, the produced water quantity, the produced gas quantity, the water content and the extraction degree, and analyzing the dynamic production characteristics, namely the relation curve rule of the oil quantity, the liquid quantity, the water content and the extraction degree with time.
Through the steps, physical simulation of gas injection assisted thermal recovery is realized, so that a gas injection assisted thermal recovery oil displacement mechanism is explored, and the influence of auxiliary gas on the recovery effect is known. The gas parameter is accurately controlled and measured by adopting the combination of a flowmeter, a controller, a regulator and the like; the simulation of any stratigraphic dip angle is realized by turning over the long pipe physical model at any radial angle; and the special lining type heat insulation and injection-production well heat insulation structure in the long-pipe physical model can ensure that the temperature condition in the experimental process is consistent with that in the actual oil reservoir exploitation process as far as possible. The on-line sampling can be realized by opening a hole in the long-pipe physical model main body to serve as a sample outlet; the device adopting automatic separation and metering of the output liquid can realize the automatic separation and metering of the output liquid under the conditions of high temperature and high pressure.
In summary, the gas injection assisted thermal recovery simulation experiment apparatus and method provided by the embodiment of the invention have the following advantages:
by arranging the gas injection module, injecting wet steam with adjustable injection speed, pressure and dryness into the long pipe physical model, and injecting gas with adjustable injection speed into the long pipe physical model to simulate the injection of steam and gas in the gas injection auxiliary thermal recovery process; by arranging the long pipe physical model, an oil reservoir stratum during actual gas injection auxiliary thermal recovery can be simulated; the long-tube physical model comprises a model cylinder and a simulated oil layer, and the simulated oil layer is arranged to simulate an oil reservoir by arranging a simulated plane and a longitudinal non-homogeneity of the model cylinder; through setting up output measurement module, gather the fluid of long tube physical model output, measure the fluid of long tube physical model output, simulate actual oil gas exploitation, accomplish the supplementary thermal recovery simulation experiment of gas injection. In conclusion, the method can effectively simulate the gas injection auxiliary thermal recovery process, further explore the oil displacement mechanism of the gas injection auxiliary thermal recovery and improve the recovery ratio.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. The utility model provides a supplementary thermal recovery simulation experiment device of gas injection which characterized in that includes:
the gas injection module is used for injecting wet steam with adjustable injection speed, pressure and dryness into the long pipe physical model and injecting gas with adjustable injection speed into the long pipe physical model;
the long-tube physical model is used for simulating an oil reservoir stratum during actual gas injection assisted thermal recovery; the long-tube physical model comprises a model cylinder and a simulated oil layer, wherein the model cylinder is used for simulating plane and longitudinal heterogeneity, and the simulated oil layer is used for simulating an oil reservoir;
and the output metering module is used for collecting the fluid output by the long pipe physical model and metering the fluid output by the long pipe physical model.
2. The apparatus of claim 1, wherein the gas injection module comprises:
the device comprises a steam generator, a gas source, a regulator, a gas flowmeter and a controller;
the steam generator is used for generating wet steam with adjustable injection speed, pressure and dryness;
the gas source is used for providing gas for assisting in production;
the regulator is used for regulating the pressure of the gas provided by the gas source;
the gas flowmeter is used for adjusting the flow of the gas after the pressure is adjusted by the regulator;
the controller for mixing the wet steam and the gas;
the gas source, the regulator and the gas flowmeter are sequentially connected through pipelines and then are connected with the steam generator together to be connected with the controller, and the controller is connected with the long pipe physical model through a pipeline.
3. The apparatus of claim 1, wherein the long tube physical model further comprises:
the upper end cover and the lower end cover are used for covering the model cylinder;
the heat insulation layer is lined on the inner wall of the model cylinder and used for preventing heat inside the model cylinder from being dissipated outwards;
the graphite pad is used for sealing the upper end cover, the lower end cover and the model cylinder;
and the fastening bolt is used for pressing the graphite pads among the upper end cover, the lower end cover and the model cylinder.
4. The apparatus of claim 3, wherein the simulated oil layer simulates a reservoir by means of a sand-in-crude loading or quartz sand loading followed by saturated crude oil injection.
5. The apparatus of claim 4, wherein the upper end cap is provided with a sand-pack and sand-removal plug for compacting the sand-pack; and the model cylinder, the upper end cover and the lower end cover are provided with openings which are used as a crude oil injection port and a crude oil discharge port.
6. The apparatus of claim 1, wherein the yield metering module comprises:
the device comprises a return pressure control valve, a gas-liquid separator, a liquid collector and a gas flowmeter;
one end of the back pressure control valve is connected with the fluid outlet of the long pipe physical model, and the other end of the back pressure control valve is connected with the gas-liquid separator through a pipeline and then respectively connected with the liquid collector and the gas flowmeter through pipelines;
wherein the back pressure control valve is used for controlling the fluid outlet pressure of the long pipe physical model;
the gas-liquid separator is used for separating gas and liquid produced by the long pipe physical model;
the liquid collector is used for collecting the liquid separated by the gas-liquid separator;
the gas flowmeter is used for metering the gas separated by the gas-liquid separator in real time.
7. The apparatus of claim 1, further comprising: and the data acquisition and image processing module is used for measuring and acquiring temperature and pressure signals of a simulated oil layer of the long pipe physical model in the gas injection assisted thermal recovery simulation experiment process, and processing the acquired temperature and pressure signals to generate a field diagram.
8. The apparatus of claim 7, wherein the data acquisition and image processing module comprises:
a plurality of temperature sensors installed in the simulated oil layer for measuring the temperature of the simulated oil layer;
a plurality of pressure sensors installed in the simulated oil layer for measuring a pressure of the simulated oil layer;
the data acquisition unit is used for collecting temperature signals measured by a plurality of temperature sensors and pressure signals measured by a plurality of pressure sensors and transmitting the temperature signals and the pressure signals to the image processing unit;
and the image processing unit is used for processing the received temperature signal and the pressure signal to generate a real-time field map.
9. The apparatus of claim 1, further comprising: and the physical model heat-insulating module is used for carrying out temperature control on the long-pipe physical model so as to simulate the initial temperature condition of the oil reservoir.
10. The apparatus of claim 9, wherein the physical model incubation module comprises:
a plurality of temperature sensors for measuring the temperature of the insulating jacket;
the temperature controller is used for adjusting the heating temperature of the heater to the heat insulation sleeve according to the outside temperature of the long pipe physical model measured by the temperature sensors so as to control the temperature of the heat insulation sleeve within a preset range;
the heat insulation sleeve is wrapped on the outer side of the long pipe physical model and used for insulating the long pipe physical model;
and the heater is used for heating the heat preservation sleeve.
11. The apparatus of claim 1, further comprising: and the model support is used for supporting and driving the long pipe physical model to radially overturn so that the long pipe physical model and a horizontal plane form a preset included angle to simulate a stratigraphic dip angle at any angle.
12. A gas injection assisted thermal recovery simulation experiment method, using the gas injection assisted thermal recovery simulation experiment apparatus according to any one of claims 1 to 11, the gas injection assisted thermal recovery simulation experiment method comprising:
injecting wet steam with preset injection speed, pressure and dryness and gas with preset injection speed into the long pipe physical model by using a gas injection module;
collecting the fluid produced by the long-tube physical model by using a production metering module, and metering the fluid produced by the long-tube physical model;
and analyzing to obtain the production dynamic characteristics of the gas injection auxiliary thermal recovery simulation experiment process according to the fluid metering result of the output metering module.
13. The method of claim 12, further comprising:
in the process of a gas injection auxiliary thermal recovery simulation experiment, a data acquisition and image processing module is used for measuring and acquiring temperature and pressure signals of a simulated oil layer in the long pipe physical model, and the acquired temperature and pressure signals are processed to generate a field diagram.
14. The method of claim 12, further comprising: and (3) utilizing a physical model heat-insulating module to control the temperature of the long-pipe physical model and simulate the initial temperature condition of the oil reservoir.
15. The method of claim 12, further comprising: and rotating the long pipe physical model to simulate the stratigraphic dip angles at different angles.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110288778A1 (en) * | 2008-11-28 | 2011-11-24 | Schlumberger Technology Corporation | Method for estimation of sagd process characteristics |
| CN103452540A (en) * | 2013-09-18 | 2013-12-18 | 张方礼 | Edge water heavy oil reservoir steam-drive two-dimensional proportion physical simulation device and application method thereof |
| CN109653737A (en) * | 2017-10-11 | 2019-04-19 | 中国石油化工股份有限公司 | Simulate viscous crude heat dissipation law experimental provision |
-
2020
- 2020-12-03 CN CN202011394282.XA patent/CN114607329A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110288778A1 (en) * | 2008-11-28 | 2011-11-24 | Schlumberger Technology Corporation | Method for estimation of sagd process characteristics |
| CN103452540A (en) * | 2013-09-18 | 2013-12-18 | 张方礼 | Edge water heavy oil reservoir steam-drive two-dimensional proportion physical simulation device and application method thereof |
| CN109653737A (en) * | 2017-10-11 | 2019-04-19 | 中国石油化工股份有限公司 | Simulate viscous crude heat dissipation law experimental provision |
Non-Patent Citations (2)
| Title |
|---|
| 张洪宝 等: "超稠油油藏烟道气辅助SAGD物理模拟实验", 断块油气田, vol. 27, no. 2, 25 March 2020 (2020-03-25), pages 244 * |
| 李恭元: "优化注入方式提高辅助措施有效率", 中国科技博览, no. 10, 31 December 2015 (2015-12-31), pages 392 * |
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