CN108222908B - Method and device for determining combustion data in fireflood process - Google Patents
Method and device for determining combustion data in fireflood process Download PDFInfo
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- CN108222908B CN108222908B CN201711429189.6A CN201711429189A CN108222908B CN 108222908 B CN108222908 B CN 108222908B CN 201711429189 A CN201711429189 A CN 201711429189A CN 108222908 B CN108222908 B CN 108222908B
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- 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
- 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
- E21B43/243—Combustion in situ
Abstract
The embodiment of the application provides a method and a device for determining combustion data in a fireflood process. The method comprises the following steps: performing a fireflood experiment in a fireflood experiment model filled with oil sand, and recording the air injection amount in the fireflood process; injecting a consolidation material into a burnt area of the fire flooding experimental model after the fire flooding experiment to obtain the consolidated material after solidification; calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material; and determining the three-dimensional shape of the solidified consolidated material, and taking the unit volume air consumption and the three-dimensional shape as combustion data in a fire flooding process. By using the technical scheme provided by the embodiment of the application, the combustion data in the fire flooding process can be accurately determined, data support is provided for oil exploitation of an in-situ combustion layer, and the oil recovery ratio of the in-situ combustion layer is improved.
Description
Technical Field
The invention relates to the technical field of oil and gas exploration, in particular to a method and a device for determining combustion data in a fireflood process.
Background
In the process of oil exploration and exploitation, the reserve of thickened oil accounts for about 25-30% of the total oil reserve in China, and is one of the main sources of oil exploitation. However, the thick oil has large density, high viscosity and poor fluidity, and the conventional water-drive exploitation method has poor development effect. In-situ combustion (fire flooding) is a mining mode which is generally adopted for high-viscosity heavy oil or asphalt and is used for increasing the temperature of an oil layer, reducing the viscosity of crude oil, enhancing the mobility of the crude oil and enhancing the formation energy. Therefore, fireflooding has become one of the major methods for increasing the recovery of heavy oil.
At present, in order to improve the oil recovery ratio of in-situ combustion, the spreading rule of a combustion front in the in-situ combustion process and the influence of different injection and production parameters on the combustion process are usually observed through an indoor three-dimensional fire flooding experiment, so that the feasibility of the fire flooding technology is judged, and a regulation and control method of the combustion process is searched and checked. However, the prior art is only a general observation, and there is no combustion data which can guide the development of the field fire flooding of the oil field and reflect the propulsion condition of the combustion front, such as the unit volume air consumption, the three-dimensional shape of the burnt area and the like. The influence of injection-production parameters on the combustion process can be judged by comparing the shapes of the burnt areas under different injection-production parameter conditions. Therefore, a method for accurately determining combustion data in a fire flooding process is urgently needed in the prior art, so that data support is provided for oil exploitation of in-situ combustion, and the oil recovery ratio of in-situ combustion is improved.
Disclosure of Invention
The application aims to provide a method and a device for determining combustion data in a fire flooding process, which can accurately determine the combustion data in the fire flooding process, provide data support for oil exploitation of an in-situ combustion layer and improve the oil recovery ratio of the in-situ combustion layer.
The method and the device for determining the combustion data in the fireflood process are realized as follows:
a method of determining combustion data in a fireflood process, the method comprising:
performing a fireflood experiment in a fireflood experiment model filled with the oil sand, and recording the air injection amount in the fireflood process;
injecting a consolidation material into a burnt area of the fire flooding experimental model after the fire flooding experiment to obtain the consolidated material after solidification;
calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material;
and determining the three-dimensional shape of the solidified consolidated material, and taking the unit volume air consumption and the three-dimensional shape as combustion data in a fire flooding process.
In a preferred embodiment, the determining the three-dimensional shape of the solidified consolidated material comprises:
slicing the solidified consolidation material according to a preset thickness to obtain a sliced consolidation material;
recording the section contour coordinate data of the slice consolidation material;
drawing a three-dimensional shape based on the cross-sectional profile coordinate data of the sliced consolidated material;
and taking the drawn three-dimensional shape as the three-dimensional shape of the solidified consolidation material.
In a preferred embodiment, the calculating the air consumption per unit volume in the fireflood process based on the injected air amount in the fireflood process and the volume of the solidified consolidation material comprises:
immersing the solidified consolidation material into a container filled with water, measuring the total volume of overflowing water, and taking the total volume of the overflowing water as the volume of the solidified consolidation material;
and dividing the air injection amount in the fire flooding process by the volume of the solidified consolidation material to obtain the unit volume air consumption in the fire flooding process.
In a preferred embodiment, the consolidation material comprises one of:
cement paste, a mixture of plaster of paris and water, a mixture of clay and water.
In a preferred embodiment, the method further comprises:
after the fire flooding experiment is finished, removing gravels in a burnt area in the fire flooding experiment model;
correspondingly, the burned area of the fire flooding experimental model after the fire flooding experiment comprises a burned area after sand is removed.
An apparatus for determining combustion data during a fireflood, the apparatus comprising:
the fireflood experiment module is used for carrying out a fireflood experiment in a fireflood experiment model filled with oil sand and recording the air injection amount in the fireflood process;
the consolidation material injection module is used for injecting consolidation materials into a burnt area of the fire flooding experiment model after the fire flooding experiment;
a consolidation entity determining module for obtaining a consolidated material after solidification;
the calculation module is used for calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material;
a three-dimensional shape determination module for determining a three-dimensional shape of the solidified consolidated material;
and the combustion data determining module is used for taking the unit volume air consumption and the three-dimensional shape as combustion data in a fireflood process.
In a preferred embodiment, the three-dimensional shape determination module comprises:
the slicing processing unit is used for slicing the solidified consolidation material according to a preset thickness to obtain a sliced consolidation material;
the section contour coordinate data recording unit is used for recording the section contour coordinate data of the slice consolidation material;
a three-dimensional shape drawing unit for drawing a three-dimensional shape based on the cross-sectional profile coordinate data of the slice consolidation material;
a three-dimensional shape determining unit for taking the drawn three-dimensional shape as the three-dimensional shape of the solidified consolidation material.
In a preferred embodiment, the calculation module comprises:
the volume calculation unit is used for immersing the solidified consolidation material into a container filled with water, measuring the total volume of overflowed water, and taking the total volume of the overflowed water as the volume of the solidified consolidation material;
and the unit volume air consumption calculating unit is used for dividing the air injection amount in the fire flooding process by the volume of the solidified consolidation material to obtain the unit volume air consumption in the fire flooding process.
In a preferred embodiment, the consolidation material comprises one of:
cement paste, a mixture of plaster of paris and water, a mixture of clay and water.
In a preferred embodiment, the apparatus further comprises:
the sandstone removing unit is used for removing sandstone in a burnt area in the fireflood experimental model after the fireflood experiment is finished;
correspondingly, the burned area of the fire flooding experimental model after the fire flooding experiment comprises a burned area after sand is removed.
According to the technical scheme, the fireflood experiment can be performed in the fireflood experiment model filled with the oil sand, and the air injection amount in the fireflood process is recorded; injecting a consolidation material into a burnt area of the fire flooding experimental model after the fire flooding experiment to obtain the consolidated material after solidification; calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material; and determining the three-dimensional shape of the solidified consolidated material, and taking the unit volume air consumption and the three-dimensional shape as combustion data in a fire flooding process. Compared with the prior art, the technical scheme provided by the application can be used for accurately determining combustion data in the fire flooding process, providing data support for oil exploitation of in-situ combustion, and improving the oil recovery ratio of in-situ combustion.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a flow chart of an embodiment of a method of determining combustion data during a fireflood process as provided herein;
FIG. 2 is a schematic diagram of one embodiment of a fireflood experimental model provided herein;
FIG. 3 is a schematic illustration of an embodiment of a fireflood experiment as provided by embodiments of the present application;
FIG. 4 is a schematic flow chart diagram illustrating one embodiment of determining a three-dimensional shape of a solidified material provided herein;
FIG. 5 is a schematic diagram of an embodiment of an apparatus for determining combustion data during a fireflood process as provided herein.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
The following describes specific implementations of embodiments of the present application in detail with reference to several specific examples.
One embodiment of a method of determining combustion data during a fireflood process according to the present application is first described below. FIG. 1 is a flow chart of one embodiment of a method of determining combustion data in a fireflood process as provided herein, with the method operating steps as described in the embodiments or the flow chart, but may include more or less operating steps based on routine or non-inventive labor. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. In actual implementation, the system or client product may execute sequentially or in parallel (e.g., in the context of parallel processors or multi-threaded processing) according to the embodiments or methods shown in the figures. Specifically, as shown in fig. 1, the method may include:
s110: and performing a fireflood experiment in the fireflood experiment model filled with the oil sand, and recording the air injection amount in the fireflood process.
In the embodiment of the application, the oil sand can be a mixture of original sand and sand, and particularly, the sand can be quartz sand. Specifically, in the fire flooding experiment process, in order to ensure that the initial temperature of the fire flooding experiment model is constant and uniform, the fire flooding experiment model can be placed in a constant temperature environment for a certain time. Then, high-temperature ignition is carried out at certain temperature and pressure. And continuously injecting air, stopping injecting the air according to the experimental purpose after the air is combusted to a certain degree, and changing the injection into nitrogen injection. The combustion process will stop and the fireflood experiment will end due to the absence of oxygen supply.
In a specific embodiment, as shown in fig. 2, fig. 2 is a schematic diagram of an embodiment of the experimental model for fireflooding provided herein. As can be seen from fig. 2, the fire flooding experimental model is a cuboid model with the length, width and height of 500mm, 500mm and 50mm at a time, ignition/gas injection wells 210, diagonal production wells 220 and 2 side production wells 230 are arranged at four corners of the fire flooding experimental model, and the distance between 4 wells and the boundary of the fire flooding experimental model is negligible. The 4 wells can be made of stainless steel pipe slots to prevent sand in the fire flooding experimental model from entering the shaft to block the pipeline. In addition, the fireflood experimental model was filled with oil sands having an oil saturation of 80% (here, the oil sands may be a mixture of crude oil and quartz sand), the model permeability may be set to 3000mD, the porosity is 30%, and the viscosity of crude oil under the initial experimental conditions is 2000mPa · s. When the fireflood experiment is carried out, the fireflood experiment model can be sealed and placed in a thermostat at 40 ℃ for standing for 4 hours. Then, air was heated to 500 ℃ by a heating furnace and injected into the ignition/gas injection well 210 at a flow rate of 2L/min. And (3) closing the heating furnace after continuously injecting gas for 30min, injecting normal-temperature air, increasing the gas injection speed to 4L/min, and continuously performing the experiment for 2 hours. And then stopping injecting air, closing the heating function of the constant temperature box, changing the nitrogen injection into nitrogen injection, and continuously injecting until the highest temperature in the fire flooding experimental model does not exceed 50 ℃.
S120: and (3) injecting a consolidation material into a burnt area of the fire flooding experimental model after the fire flooding experiment to obtain the consolidated material after solidification.
As shown in fig. 3, fig. 3 is a schematic diagram of an embodiment of the present application after a fireflood experiment. Visible in FIG. 3 are firing/gas injection wells 210, diagonal production wells 220, 2 lateral production wells 230, a live zone 240, and an unburned zone 250.
In the embodiment of the application, after the fireflood experiment is finished, the consolidation material can be injected into the burnt area of the fireflood experimental model after the fireflood experiment, and the consolidated material after solidification is obtained. Specifically, in the present embodiment, the consolidation material may include a material with certain fluidity, but may be solidified into a solid after a certain time, and the solidified solid has a firm structure, and may be preferably a water-insoluble consolidation material. In a particular embodiment, the consolidation material may comprise one of:
cement paste, a mixture of plaster of paris and water, a mixture of clay and water.
In addition, since the combustion zone is only the combustion of the crude oil after the combustion, the embodiments of the present application may further include:
after the fire flooding experiment is finished, removing gravels in a burnt area in the fire flooding experiment model;
correspondingly, the burned area of the fire flooding experimental model after the fire flooding experiment comprises a burned area after sand is removed.
Specifically, the sand and stone in the burnt area can be completely removed by using a dust collector, and can also be cleaned by using other manual tools such as a small brush and the like. Care was taken during the cleaning process not to break the char zone, nor to touch other areas, to ensure that the burned areas were not damaged.
Specifically, the end cover of the fire flooding experimental model can be opened, an obvious burnt area can be observed, consolidation materials are injected into the burnt area, the top surface of the consolidation materials is kept to be level with the top surface of the oil sand in other areas in the model, after the consolidation materials are solidified, the oil sand in the rest areas in the fire flooding experimental model can be cleaned, and only consolidation solids (namely, solidified consolidation materials) in the burnt area are reserved.
S130: calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material.
In an embodiment of the present application, the calculating an air consumption per unit volume in the fireflooding process based on the air injection amount in the fireflooding process and the volume of the solidified consolidation material may include:
immersing the solidified consolidation material into a container filled with water, measuring the total volume of overflowing water, and taking the total volume of the overflowing water as the volume of the solidified consolidation material;
and dividing the air injection amount in the fire flooding process by the volume of the solidified consolidation material to obtain the unit volume air consumption in the fire flooding process.
Specifically, when the consolidation material is a mixture of clay and water, the volume of the consolidated material after solidification can be determined by using other solutions because the mixture of clay and water is soluble in water.
S140: and determining the three-dimensional shape of the solidified consolidated material, and taking the unit volume air consumption and the three-dimensional shape as combustion data in a fire flooding process.
In the embodiment of the present application, the three-dimensional shape of the solidified consolidated material can be determined after obtaining the solidified consolidated material. As shown in fig. 4, fig. 4 is a schematic flow chart of an embodiment of determining a three-dimensional shape of a solidified consolidated material provided by the present application, which may specifically include:
s141: and slicing the solidified consolidation material according to a preset thickness to obtain a sliced consolidation material.
Specifically, the preset thickness can be set according to the application requirements, for example, 1 cm.
S143: and recording the section contour coordinate data of the slice consolidation material.
In embodiments using dimers, the hole may be drilled in the very center of the solidified consolidation material, with the direction of the perforation being the long axis, and the perforation drilled through the solidified consolidation material, and the perforated vertical well may be set to a size much smaller than the solidified consolidation material in conjunction with the arrival correction of the solidified consolidation material, for example, to 0.2 cm. Then, slicing the gypsum model in a direction perpendicular to the long axis by the thickness of 1cm, flatly placing the slice consolidation materials on coordinate paper one by one to ensure that the holes are positioned at the origin of coordinates, and drawing the outline of the slice consolidation materials on the coordinate paper to obtain the section outline coordinate data of the slice consolidation materials.
S145: drawing a three-dimensional shape based on the cross-sectional profile coordinate data of the sliced consolidated material.
Specifically, in the embodiment of the present application, the cross-section profile coordinate data may be read by using a digitizing software Getdata. And combining the section contour coordinate data in sequence, thereby determining the three-dimensional shape of the solidified consolidation material.
S147: and taking the drawn three-dimensional shape as the three-dimensional shape of the solidified consolidation material.
According to the embodiment of the method for determining the combustion data in the fireflood process, the fireflood experiment is carried out in the fireflood experiment model filled with the oil sand, and the air injection amount in the fireflood process is recorded; injecting a consolidation material into a burnt area of the fire flooding experimental model after the fire flooding experiment to obtain the consolidated material after solidification; calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material; and determining the three-dimensional shape of the solidified consolidated material, and taking the unit volume air consumption and the three-dimensional shape as combustion data in a fire flooding process. Compared with the prior art, the technical scheme provided by the application can be used for accurately determining combustion data in the fire flooding process, providing data support for oil exploitation of in-situ combustion, and improving the oil recovery ratio of in-situ combustion.
In another aspect, the present application further provides an apparatus for determining combustion data in a fireflood process, and fig. 5 is a schematic structural diagram of an embodiment of the apparatus for determining combustion data in a fireflood process provided herein; as shown in fig. 5, the apparatus 500 may include:
the fireflood experiment module 510 can be used for performing a fireflood experiment in a fireflood experiment model filled with oil sand and recording the air injection amount in the fireflood process;
a consolidating material injection module 520 that may be used to inject consolidating material in the burned area of the fireflood experimental model after the fireflood experiment;
a consolidation entity determination module 530, which may be configured to obtain a consolidated material after solidification;
a calculation module 540, which can be used for calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material;
a three-dimensional shape determination module 550 operable to determine a three-dimensional shape of the solidified consolidated material;
a combustion data determination module 560, which may be configured to use the air consumption per unit volume and the three-dimensional shape as combustion data during fireflooding.
In a preferred embodiment, the three-dimensional shape determining module 550 may include:
the slicing processing unit can be used for slicing the solidified consolidation material according to a preset thickness to obtain a sliced consolidation material;
the section contour coordinate data recording unit can be used for recording the section contour coordinate data of the slice consolidation material;
a three-dimensional shape drawing unit operable to draw a three-dimensional shape based on cross-sectional profile coordinate data of the sliced consolidated material;
a three-dimensional shape determining unit operable to take the drawn three-dimensional shape as a three-dimensional shape of the solidified consolidation material.
In a preferred embodiment, the calculation module 540 may include:
the volume calculation unit can be used for immersing the solidified consolidation material into a container filled with water, measuring the total volume of overflowed water, and taking the total volume of the overflowed water as the volume of the solidified consolidation material;
and the unit volume air consumption calculating unit can be used for dividing the air injection amount in the fire flooding process by the volume of the solidified consolidation material to obtain the unit volume air consumption in the fire flooding process.
In a preferred embodiment, the consolidation material may comprise one of:
cement paste, a mixture of plaster of paris and water, a mixture of clay and water.
In a preferred embodiment, the apparatus 500 may further include:
the sandstone removing unit can be used for removing sandstone in a burnt area in the fireflood experimental model after the fireflood experiment is finished;
correspondingly, the burned area of the fire flooding experimental model after the fire flooding experiment comprises a burned area after sand is removed.
According to the embodiment of the method or the device for determining the combustion data in the fireflood process, the fireflood experiment is carried out in the fireflood experiment model filled with the oil sand, and the air injection amount in the fireflood process is recorded; injecting a consolidation material into a burnt area of the fire flooding experimental model after the fire flooding experiment to obtain the consolidated material after solidification; calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material; and determining the three-dimensional shape of the solidified consolidated material, and taking the unit volume air consumption and the three-dimensional shape as combustion data in a fire flooding process. Compared with the prior art, the technical scheme provided by the application can be used for accurately determining combustion data in the fire flooding process, providing data support for oil exploitation of in-situ combustion, and improving the oil recovery ratio of in-situ combustion.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
While the present application has been described with examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application without departing from the spirit of the application, and it is intended that the appended claims encompass such variations and permutations without departing from the spirit of the application.
Claims (8)
1. A method of determining combustion data in a fireflood process, the method comprising:
performing a fireflood experiment in a fireflood experiment model filled with the oil sand, and recording the air injection amount in the fireflood process;
injecting a consolidation material into a burnt area of the fire flooding experimental model after the fire flooding experiment to obtain the consolidated material after solidification;
calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material;
determining the three-dimensional shape of the solidified consolidated material, and taking the air consumption per unit volume and the three-dimensional shape as combustion data in a fire flooding process, wherein the method comprises the following steps: slicing the solidified consolidation material according to a preset thickness to obtain a sliced consolidation material; recording the section contour coordinate data of the slice consolidation material; drawing a three-dimensional shape based on the cross-sectional profile coordinate data of the sliced consolidated material; and taking the drawn three-dimensional shape as the three-dimensional shape of the solidified consolidation material.
2. The method of claim 1, wherein calculating the air consumption per volume during the fireflood based on the injected amount of air during the fireflood and the volume of the solidified consolidated material comprises:
immersing the solidified consolidation material into a container filled with water, measuring the total volume of overflowing water, and taking the total volume of the overflowing water as the volume of the solidified consolidation material;
and dividing the air injection amount in the fire flooding process by the volume of the solidified consolidation material to obtain the unit volume air consumption in the fire flooding process.
3. The method of claim 1, wherein the consolidating material comprises one of:
cement paste, a mixture of plaster of paris and water, a mixture of clay and water.
4. The method of any of claims 1 to 3, further comprising:
after the fire flooding experiment is finished, removing gravels in a burnt area in the fire flooding experiment model;
correspondingly, the burned area of the fire flooding experimental model after the fire flooding experiment comprises a burned area after sand is removed.
5. An apparatus for determining combustion data during a fireflood, the apparatus comprising:
the fireflood experiment module is used for carrying out a fireflood experiment in a fireflood experiment model filled with oil sand and recording the air injection amount in the fireflood process;
the consolidation material injection module is used for injecting consolidation materials into a burnt area of the fire flooding experiment model after the fire flooding experiment;
a consolidation entity determining module for obtaining a consolidated material after solidification;
the calculation module is used for calculating the air consumption per unit volume in the fire flooding process based on the air injection amount in the fire flooding process and the volume of the solidified consolidation material;
a three-dimensional shape determination module for determining a three-dimensional shape of the solidified consolidated material, comprising: slicing the solidified consolidation material according to a preset thickness to obtain a sliced consolidation material; recording the section contour coordinate data of the slice consolidation material; drawing a three-dimensional shape based on the cross-sectional profile coordinate data of the sliced consolidated material; taking the drawn three-dimensional shape as the three-dimensional shape of the solidified consolidated material;
and the combustion data determining module is used for taking the unit volume air consumption and the three-dimensional shape as combustion data in a fireflood process.
6. The apparatus of claim 5, wherein the computing module comprises:
the volume calculation unit is used for immersing the solidified consolidation material into a container filled with water, measuring the total volume of overflowed water, and taking the total volume of the overflowed water as the volume of the solidified consolidation material;
and the unit volume air consumption calculating unit is used for dividing the air injection amount in the fire flooding process by the volume of the solidified consolidation material to obtain the unit volume air consumption in the fire flooding process.
7. The apparatus of claim 5, wherein the consolidating material comprises one of:
cement paste, a mixture of plaster of paris and water, a mixture of clay and water.
8. The apparatus of any of claims 5 to 7, further comprising:
the sandstone removing unit is used for removing sandstone in a burnt area in the fireflood experimental model after the fireflood experiment is finished;
correspondingly, the burned area of the fire flooding experimental model after the fire flooding experiment comprises a burned area after sand is removed.
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| CN112505072B (en) * | 2020-10-29 | 2022-07-05 | 中国石油天然气股份有限公司 | Method for determining fire flooding combustion temperature of heavy oil reservoir by using clay minerals |
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| CN2833763Y (en) * | 2005-09-27 | 2006-11-01 | 中国石化胜利油田有限公司采油工艺研究院 | Linear physical simulation apparatus for combustion drive |
| US20090242196A1 (en) * | 2007-09-28 | 2009-10-01 | Hsueh-Yuan Pao | System and method for extraction of hydrocarbons by in-situ radio frequency heating of carbon bearing geological formations |
| CN101271642B (en) * | 2007-10-01 | 2010-07-21 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Combustion driven three-dimensional physical analogue device |
| CN202659220U (en) * | 2012-07-19 | 2013-01-09 | 海安县石油科研仪器有限公司 | Oil sand burning fuel scavenging device |
| CN105239982B (en) * | 2015-09-22 | 2017-10-17 | 中国石油天然气股份有限公司 | The method and apparatus of air requirements amount during a kind of determination combustion in situ |
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