CN108590614B - Characterization method and device for secondary start displacement pressure of oil reservoirs at different temperatures - Google Patents
Characterization method and device for secondary start displacement pressure of oil reservoirs at different temperatures Download PDFInfo
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Abstract
The application provides a method and a device for representing secondary starting displacement pressure of different temperatures of an oil reservoir, wherein the method comprises the following steps: and distilling the crude oil according to the temperature to obtain oil products in different temperature ranges after distillation. And obtaining the surface tension of the oil products in different temperature ranges according to a first preset rule based on the oil products in different temperature ranges after distillation. And obtaining the wetting angles of the oil products in different temperature intervals according to a second preset rule based on the oil products in different temperature intervals after distillation. And obtaining the capillary force of the oil products in different temperature ranges according to the surface tension and the wetting angle of the oil products in different temperature ranges and a third preset rule. The capillary force of the oil products in the different temperature ranges is characterized as the displacement pressure of the oil deposit at different temperatures for secondary starting. This application can guarantee the better drainage to the producing well of the crude oil in cold district and rich oil district, guarantees the balanced extension in live wire leading edge high temperature oxidation region.
Description
Technical Field
The application belongs to the technical field of oil exploitation, and particularly relates to a method and a device for representing oil reservoir different-temperature secondary start displacement pressure.
Background
Light components in the heavy oil are usually combusted to generate heavy components in the ignition process of the heavy oil reservoir, and the heavy components are difficult to displace in the secondary starting of the fire flooding, so that the displacement pressure of the secondary starting is acquired before the heavy oil reservoir is ignited, and the heavy components are very important for the ignition of the heavy oil reservoir.
However, current research on in-situ combustion is mostly directed to the propulsion of the fire line during the fire flooding process. However, in the ignition process, the temperature field is initially established, and the secondary starting in the fireflood process is different from the fire line propulsion in the fireflood process, so that the fire line propulsion method and parameters cannot be applied to the secondary starting of the heavy oil reservoir.
For this reason, the common practice in the oil exploitation field can use the capillary force of the reservoir to represent the displacement pressure of the heavy oil reservoir, and the field direct testing of the capillary force of the reservoir is difficult and has huge workload.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a method and a device for representing the secondary start displacement pressure of an oil reservoir at different temperatures, which can simply and conveniently represent the displacement pressure of the oil reservoir.
The specific technical scheme of the invention is as follows:
the invention provides a method for representing secondary starting displacement pressure of different temperatures of an oil reservoir, which comprises the following steps of:
distilling the crude oil according to the temperature to obtain oil products in different temperature ranges after distillation;
based on the oil products in different temperature ranges after distillation, obtaining the surface tension of the oil products in different temperature ranges according to a first preset rule;
based on the oil products in different temperature ranges after distillation, obtaining the wetting angles of the oil products in different temperature ranges according to a second preset rule;
according to the surface tension and wetting angle of the oil products in different temperature ranges, obtaining the capillary force of the oil products in different temperature ranges according to a third preset rule;
the capillary force of the oil products in the different temperature ranges is characterized as the displacement pressure of the oil deposit at different temperatures for secondary starting.
In a preferred embodiment, distilling crude oil according to temperature comprises:
according to the temperature of less than 250 ℃;
250℃-300℃；
300-350 ℃; and
and the crude oil is distilled in four temperature intervals at the temperature of more than 350 ℃.
In a preferred embodiment, the first predetermined rule is that the surface tension of the oil in different temperature ranges is calculated according to the following formula:
wherein, sigma is the surface tension of the oil product and has the unit of mN/m; t is expressed as temperature in units of ℃.
In a preferred embodiment, the second predetermined rule is that the wetting angle of the oil in different temperature ranges is calculated according to the following formula:
wherein theta is the wetting angle of the oil product and is unit degree; t is expressed as temperature in units of ℃.
In a preferred embodiment, the third predetermined rule is that the capillary force of the oil in different temperature ranges is calculated according to the following formula:
wherein, PcExpressed as capillary force of the oil in kPa; sigma is expressed as the surface tension of the oil, in mN/m; theta is expressed as the wetting angle of the oil, unit degree; k is expressed as the permeability of the oil layer in μm2；
Expressed as the porosity of the oil layer.
In addition, this application still provides a different temperature secondary start displacement pressure's of oil reservoir characterization device, includes:
the distillation module is configured to distill the crude oil according to the temperature to obtain oil products in different temperature intervals after distillation;
the surface tension module is configured to obtain the surface tension of the oil products in different temperature intervals according to a first preset rule based on the oil products in different temperature intervals after distillation;
the wetting angle module is configured to obtain wetting angles of the oil products in different temperature intervals according to a second preset rule based on the oil products in different temperature intervals after distillation;
the acquisition module is configured to obtain capillary forces of the oil products in different temperature intervals according to a third preset rule according to the surface tension and the wetting angle of the oil products in different temperature intervals;
and the characterization module is configured to characterize the capillary force of the oil products in the different temperature intervals as the displacement pressure of the oil deposit in the second start at different temperatures.
In a preferred embodiment, the distillation module configured to distill crude oil according to temperature comprises:
according to the temperature of less than 250 ℃;
250℃-300℃；
300-350 ℃; and
and the crude oil is distilled in four temperature intervals at the temperature of more than 350 ℃.
In a preferred embodiment, the surface tension module is specifically configured to calculate the surface tension of the oil in different temperature ranges according to the following formula:
wherein, sigma is the surface tension of the oil product and has the unit of mN/m; t is expressed as temperature in units of ℃.
In a preferred embodiment, the wetting angle module is specifically configured to calculate the wetting angle of the oil in different temperature intervals according to the following formula:
wherein theta is the wetting angle of the oil product and is unit degree; t is expressed as temperature in units of ℃.
In a preferred embodiment, the obtaining module is specifically configured to calculate capillary forces of oil products in different temperature intervals according to the following formula:
wherein, PcExpressed as capillary force of the oil in kPa; sigma is expressed as the surface tension of the oil, in mN/m; theta is expressed as the wetting angle of the oil, unit degree; k is expressed as the permeability of the oil layer in μm2；
Expressed as the porosity of the oil layer.
Meanwhile, the present application also provides a device for characterizing the secondary start-up displacement pressure of the oil reservoir at different temperatures, which comprises a memory and a processor, wherein the memory stores a computer program, and the computer program realizes the following steps when being executed by the processor: the characterization method for the secondary starting displacement pressure of the oil reservoir at different temperatures is described above.
Borrow by above technical scheme, the beneficial effect of this application lies in: the characterization method and the device for the secondary start displacement pressure of the oil reservoir at different temperatures can successfully start the oil reservoir for the second time, characterize the secondary start displacement pressure of the oil reservoir, ensure that crude oil in a cold area and an oil-rich area is better drained to a production well, quickly expand a temperature field, ensure the balanced expansion of a high-temperature oxidation area at the front edge of a fire wire, and ensure the quick effect improvement of fire flooding.
Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for assisting the understanding of the present application, and are not particularly limited to the shapes, the proportional sizes, and the like of the respective members in the present application. Those skilled in the art, having the benefit of the teachings of this application, may select various possible shapes and proportional sizes to implement the present application, depending on the particular situation. In the drawings:
FIG. 1 is a flow chart of a method for characterizing secondary start-up displacement pressures at different temperatures of an oil reservoir according to an embodiment of the present disclosure;
FIG. 2 is a block diagram of a device for characterizing secondary start-up displacement pressures of oil reservoirs at different temperatures according to an embodiment of the present disclosure.
Detailed Description
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 obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, 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. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the present application provides a method for characterizing the secondary start-up displacement pressure of an oil reservoir at different temperatures, which includes the following steps:
s1: and distilling the crude oil according to the temperature to obtain oil products in different temperature ranges after distillation.
S2: and obtaining the surface tension of the oil products in different temperature ranges according to a first preset rule based on the oil products in different temperature ranges after distillation.
S3: and obtaining the wetting angles of the oil products in different temperature intervals according to a second preset rule based on the oil products in different temperature intervals after distillation.
S4: and obtaining the capillary force of the oil products in different temperature ranges according to the surface tension and the wetting angle of the oil products in different temperature ranges and a third preset rule.
S5: the capillary force of the oil products in the different temperature ranges is characterized as the displacement pressure of the oil deposit at different temperatures for secondary starting.
In the above embodiment, to characterize the second start-up displacement pressure at different temperatures of the reservoir, crude oil is first distilled according to temperature using a distillation range test. Specifically, the crude oil can be cut by using a distillation range test, and the crude oil is divided into four temperature sections which are less than 250 ℃, 250-300 ℃, 300-350 ℃ and more than 350 ℃, so as to obtain oil products in the four temperature sections.
Based on the oil products in the four temperature sections, the surface tension of the oil products in different temperature sections can be obtained according to a first preset rule. The first preset rule is that the surface tension of the oil product in different temperature ranges is calculated according to the following formula:
wherein, sigma is the surface tension of the oil product and has the unit of mN/m; t is expressed as temperature in units of ℃.
Then, based on the oil products in the four temperature intervals, the wetting angles of the oil products in different temperature intervals can be calculated according to a second preset rule:
wherein theta is the wetting angle of the oil product and is unit degree; t is expressed as temperature in units of ℃.
It should be noted that the wetting angles of the oils in different temperature ranges can be obtained based on the surface tension of the oils in different temperature ranges. Specifically, the Wilhelmy hanging piece method can be used for measuring the surface tension of the oil product in different temperature ranges, and the test condition is standard atmospheric pressure.
Before testing, the oil sample can be placed in a cylindrical sample cell which can be lifted, and a quartz plate is hung on a microbalance (with the precision of 10 mu g). The sample cell is measured at 3 mm/min-1The speed slowly rises until the liquid level just contacts the lower surface of the quartz plate, the liquid level is always parallel to the lower surface of the suspended quartz plate in the rising process, and the experiment table surface keeps vibration-free. When the liquid level just contacts the lower surface of the quartz plate, due to the wetting action of the liquid on the quartz plate, the liquid can form a meniscus on the surface of the lower end of the quartz plate to cause the liquid level of the liquid in the sample cell to drop, and when the surface tension of the sample plate is tested by the plate hanging method, the sample plate can be subjected to gravity,The gravity (w) and buoyancy (Fb) of the meniscus. Because the instrument automatically clears the gravity before testing, the total acting force F can be simplified as follows:
F＝w+Fb；
the wetting angle θ of the oil in different temperature ranges can then be calculated by using the following formula:
wherein F is expressed as total force (test can be directly measured), unit N (cattle); σ is expressed as the surface tension of the oil, in mN/m (milli-newtons per meter); theta is expressed as the wetting angle of the oil, unit degree; l is expressed as the length of the quartz piece in mm; t is expressed as the thickness of the quartz plate in mm; r is expressed as the radius of the bottom surface of the cylindrical sample cell in mm.
According to the test situation, the values r of the test can be 32.70mm, l of the test can be 24mm, and t of the test can be 0.18mm, which is taken into the formula.
And finally, obtaining the capillary force of the oil products in different temperature ranges according to the surface tension and the wetting angle of the oil products in different temperature ranges and a third preset rule. The third preset rule is that the capillary force of the oil products in different temperature ranges is calculated according to the following formula:
wherein, PcExpressed as capillary force of the oil in kPa; sigma is expressed as the surface tension of the oil, in mN/m; theta is expressed as the wetting angle of the oil, unit degree; k is expressed as the permeability of the oil layer in μm2(square microns);
expressed as the porosity of the oil layer.
Therefore, the capillary force of the oil products in different temperature ranges can be represented as the displacement pressure of the oil deposit in the secondary starting at different temperatures. Because capillary force is the resistance in the air flooding process (air is the non-wetting phase, and the non-wetting phase is the resistance), a larger capillary force represents a greater displacement pressure required to push.
Therefore, by the method for representing the secondary start displacement pressure of the oil reservoir at different temperatures, the surface tension and the wetting angle of the oil in different temperature intervals can be determined by a simple distillation range test, and then the capillary force of the oil in different temperature intervals can be calculated by a formula and can be represented as the secondary start displacement pressure of the oil reservoir at different temperatures. The method has higher accuracy, can be implemented on the site of crude oil fireflood ignition by calculating the displacement pressure for representing the secondary start.
Based on the same inventive concept, the embodiment of the invention also provides a device for representing the secondary starting displacement pressure of the oil reservoir at different temperatures, which is described in the following embodiment. The principle of solving the problems of the device for representing the secondary start displacement pressure at different temperatures of the oil reservoir is similar to the method for representing the secondary start displacement pressure at different temperatures of the oil reservoir, so the implementation of the device for representing the secondary start displacement pressure at different temperatures of the oil reservoir can refer to the implementation of the method for representing the secondary start displacement pressure at different temperatures of the oil reservoir, and repeated parts are not repeated. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
As shown in fig. 2, the present invention further provides a device for characterizing the secondary start-up displacement pressure of the oil reservoir at different temperatures, which includes:
the distillation module 101 is configured to distill the crude oil according to the temperature, so as to obtain oil products in different temperature ranges after distillation.
The surface tension module 102 is configured to obtain the surface tension of the oil product in different temperature ranges according to a first predetermined rule based on the oil product in different temperature ranges after distillation.
The wetting angle module 103 is configured to obtain wetting angles of the oil products in different temperature intervals according to a second predetermined rule based on the oil products in different temperature intervals after distillation.
And the obtaining module 104 is configured to obtain capillary forces of the oil products in different temperature intervals according to a third predetermined rule according to the surface tension and the wetting angle of the oil products in different temperature intervals.
And the characterization module 105 is configured to characterize the capillary force of the oil products in the different temperature intervals as the displacement pressure of the oil reservoir at the different temperature for secondary starting.
The distillation module 101 is configured to distill crude oil according to temperature comprising:
according to the temperature of less than 250 ℃;
250℃-300℃；
300-350 ℃; and
and the crude oil is distilled in four temperature intervals at the temperature of more than 350 ℃.
The surface tension module 102 is specifically configured to calculate the surface tension of the oil in different temperature ranges according to the following formula:
wherein, sigma is the surface tension of the oil product and has the unit of mN/m; t is expressed as temperature in units of ℃.
The wetting angle module 103 is specifically configured to calculate the wetting angles of the oil products in different temperature ranges according to the following formula:
wherein theta is the wetting angle of the oil product and is unit degree; t is expressed as temperature in units of ℃.
The obtaining module 104 is specifically configured to calculate capillary forces of oil products in different temperature ranges according to the following formula:
wherein, PcExpressed as capillary force of the oil in kPa; σ is expressed as the surface tension of the oilForce, in mN/m; theta is expressed as the wetting angle of the oil, unit degree; k is expressed as the permeability of the oil layer in μm2；
Expressed as the porosity of the oil layer.
In addition, the invention also provides a device for characterizing the secondary start-up displacement pressure of the oil reservoir at different temperatures, which comprises a memory and a processor, wherein the memory stores a computer program, and the computer program realizes the steps of the method for characterizing the secondary start-up displacement pressure of the oil reservoir at different temperatures when being executed by the processor.
In this embodiment, the memory may include a physical device for storing information, and typically, the information is digitized and then stored in a medium using an electrical, magnetic, or optical method. The memory according to this embodiment may further include: devices that store information using electrical energy, such as RAM, ROM, etc.; devices that store information using magnetic energy, such as hard disks, floppy disks, tapes, core memories, bubble memories, usb disks; devices for storing information optically, such as CDs or DVDs. Of course, there are other ways of memory, such as quantum memory, graphene memory, and so forth.
In this embodiment, the processor may be implemented in any suitable manner. For example, the processor may take the form of, for example, a microprocessor or processor and a computer-readable medium that stores computer-readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an Application Specific Integrated Circuit (ASIC), a programmable logic controller, an embedded microcontroller, and so forth.
The specific functions of the server, the processor and the memory thereof implemented by the embodiments of the present specification can be explained in comparison with the foregoing embodiments of the present specification.
In another embodiment, a software for implementing the technical solutions described in the above embodiments and preferred embodiments is also provided.
In another embodiment, a storage medium is provided, in which the software is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: the characterization method and the device for the secondary start displacement pressure of the oil reservoir at different temperatures can successfully start the oil reservoir for the second time, characterize the secondary start displacement pressure of the oil reservoir, ensure that crude oil in a cold area and an oil-rich area is better drained to a production well, quickly expand a temperature field, ensure the balanced expansion of a high-temperature oxidation area at the front edge of a fire wire, and ensure the quick effect improvement of fire flooding.
It will be apparent to those skilled in the art that the modules or steps of the embodiments of the invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
All articles and references disclosed herein, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.
Claims (11)
1. A characterization method for secondary start displacement pressure of different temperatures of an oil reservoir is characterized by comprising the following steps:
distilling the crude oil according to the temperature to obtain oil products in different temperature ranges after distillation;
based on the oil products in different temperature ranges after distillation, obtaining the surface tension of the oil products in different temperature ranges according to a first preset rule;
based on the oil products in different temperature ranges after distillation, obtaining the wetting angles of the oil products in different temperature ranges according to a second preset rule;
according to the surface tension and wetting angle of the oil products in different temperature ranges, obtaining the capillary force of the oil products in different temperature ranges according to a third preset rule;
the capillary force of the oil products in the different temperature ranges is characterized as the displacement pressure of the oil deposit at different temperatures for secondary starting.
2. The method for characterizing the secondary start-up displacement pressure of different temperatures of a reservoir according to claim 1, wherein distilling crude oil according to temperature comprises:
according to the temperature of less than 250 ℃;
250℃-300℃；
300-350 ℃; and
and the crude oil is distilled in four temperature intervals at the temperature of more than 350 ℃.
3. The characterization method of the secondary start-up displacement pressure of the oil reservoir according to claim 1, wherein the first predetermined rule is that the surface tension of the oil product in different temperature ranges is calculated according to the following formula:
wherein, sigma is the surface tension of the oil product and has the unit of mN/m; t is expressed as temperature in units of ℃.
4. The characterization method of the secondary start-up displacement pressure of the oil reservoir according to claim 1, wherein the second predetermined rule is that the wetting angle of the oil product in different temperature intervals is calculated according to the following formula:
wherein theta is the wetting angle of the oil product and is unit degree; t is expressed as temperature in units of ℃.
5. The characterization method of the secondary start-up displacement pressure of the oil reservoir according to claim 1, wherein the third predetermined rule is that capillary forces of oil products in different temperature ranges are calculated according to the following formula:
wherein, PcExpressed as capillary force of the oil in kPa; sigma is expressed as the surface tension of the oil, in mN/m; theta is expressed as the wetting angle of the oil, unit degree; k is expressed as the permeability of the oil layer in μm2；
Expressed as the porosity of the oil layer.
6. A characterization device for oil reservoir different-temperature secondary start displacement pressure is characterized by comprising:
the distillation module is configured to distill the crude oil according to the temperature to obtain oil products in different temperature intervals after distillation;
the surface tension module is configured to obtain the surface tension of the oil products in different temperature intervals according to a first preset rule based on the oil products in different temperature intervals after distillation;
the wetting angle module is configured to obtain wetting angles of the oil products in different temperature intervals according to a second preset rule based on the oil products in different temperature intervals after distillation;
the acquisition module is configured to obtain capillary forces of the oil products in different temperature intervals according to a third preset rule according to the surface tension and the wetting angle of the oil products in different temperature intervals;
and the characterization module is configured to characterize the capillary force of the oil products in the different temperature intervals as the displacement pressure of the oil deposit in the second start at different temperatures.
7. The apparatus for characterizing reservoir differential temperature double start displacement pressures of claim 6, wherein the distillation module configured to distill crude oil by temperature comprises:
according to the temperature of less than 250 ℃;
250℃-300℃；
300-350 ℃; and
and the crude oil is distilled in four temperature intervals at the temperature of more than 350 ℃.
8. The device for characterizing the secondary start-up displacement pressure of the oil reservoir according to claim 6, wherein the surface tension module is specifically configured to calculate the surface tension of the oil product in different temperature intervals according to the following formula:
wherein, sigma is the surface tension of the oil product and has the unit of mN/m; t is expressed as temperature in units of ℃.
9. The device for characterizing reservoir differential temperature double start displacement pressures of claim 6, wherein the wetting angle module is specifically configured to calculate the wetting angle of oil products in different temperature intervals according to the following formula:
wherein theta is the wetting angle of the oil product and is unit degree; t is expressed as temperature in units of ℃.
10. The device for characterizing the secondary start-up displacement pressure of the oil reservoir according to claim 6, wherein the obtaining module is specifically configured to calculate capillary forces of oil products in different temperature intervals according to the following formula:
wherein, PcExpressed as capillary force of the oil in kPa; sigma is expressed as the surface tension of the oil, in mN/m; theta is expressed as the wetting angle of the oil, unit degree; k is expressed as the permeability of the oil layer in μm2；Expressed as the porosity of the oil layer.
11. A device for characterizing the secondary start-up displacement pressure of a reservoir at different temperatures, comprising a memory and a processor, the memory having stored therein a computer program which, when executed by the processor, carries out the steps of: the method for characterizing the secondary start-up displacement pressure of the oil reservoir at different temperatures according to any one of claims 1 to 5.
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| CN105239982A (en) * | 2015-09-22 | 2016-01-13 | 中国石油天然气股份有限公司 | Method and device for determining air demand in in-situ oil combustion process |
| CN105243200A (en) * | 2015-09-22 | 2016-01-13 | 中国石油天然气股份有限公司 | Method and apparatus for determining fuel consumption of in-situ combustion process |
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| CN1430698A (en) * | 2000-04-24 | 2003-07-16 | 国际壳牌研究有限公司 | Method for treating hydrocarbon-containing formation |
| CN104392092A (en) * | 2014-10-10 | 2015-03-04 | 中国石油天然气股份有限公司 | Temperature calculation and control method and device for mixed liquor of gravity fire flooding production well |
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