CN109709131A - Compact oil core huff-puff experimental method, device and system - Google Patents
Compact oil core huff-puff experimental method, device and system Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A90/30—Assessment of water resources
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Abstract
The specification discloses a tight oil core huff and puff experimental method, a device and a system, wherein the tight oil core huff and puff experimental method comprises the following steps: obtaining first nuclear magnetic T by a compact rock core subjected to simulated formation water saturation treatment through nuclear magnetic resonance equipment2A spectral signal; generating a first control signal, providing manganese water to a compact oil core subjected to simulated formation water saturation treatment through a displacement pump under the action of the first control signal, and saturating the compact oil core by using the manganese water; generating a second control signal, providing crude oil to the compact oil core through a displacement pump under the action of the second control signal, saturating the compact oil core with the crude oil, and obtaining second nuclear magnetic T through nuclear magnetic resonance equipment2A spectral signal; generating a third control signal, providing a huff-and-puff injection medium for the dense oil core through a displacement pump under the action of the third control signal to perform a huff-and-puff experiment, and acquiring corresponding nuclear magnetic T in each huff-and-puff period through nuclear magnetic resonance equipment2A spectral signal.
Description
Technical Field
The specification relates to the technical field of core huff and puff experiments, in particular to a tight oil core huff and puff experiment method, device and system.
Background
Compact oil has become a new hotspot for global unconventional oil and gas development following shale gas. Because the permeability of the compact oil reservoir is extremely low and the non-Darcy seepage is obvious, the problems of high injection difficulty, quick yield decrease and the like caused by the starting pressure gradient exist in the water injection development, and the development technologies such as water injection huff and puff need to be used.
Waterflooding huff and puff development is an effective development mode for tight oil reservoirs. The water injection stimulation technology is that water is injected into the stratum firstly, and the injected water preferentially enters beneficial parts such as large pores, cracks and the like while supplementing the energy of the stratum. After the well is shut in, under the action of capillary pressure, the injected water is displaced with oil gas in the medium-small pore throat or matrix, and oil-water displacement is realized under the action of gravity differentiation, so that oil-water in the reservoir is redistributed. After a certain time, the well is opened and the pressure is reduced, so that the oil gas displaced into the macropores and the cracks is produced along with the injected water.
In a laboratory, in a conventional core water injection throughput experiment, a core is placed in a common holder, a displacement pump is used for providing injection pressure and measuring injection amount, the opening and closing of a wellhead are simulated by closing or opening an outlet end, and the produced liquid amount is measured by a test tube at the outlet end to calculate data such as recovery rate. This approach has several significant drawbacks: 1. the error of the flow measured by the pump outlet end flow system and the outlet end test tube is large, and the influence of the temperature and other external factors is large. The internal pore volume of the compact rock core is more micro-nano pores, the total porosity is smaller, the total amount of produced fluid is less, and the measurement error is increased; 2. the distribution change of the fluid inside the rock core can not be obtained in time in the handling process; 3. if the oil saturation of different pores in the core is to be detected, the experiment must be stopped, the core is taken out for nuclear magnetic resonance detection, and the fluid in the core is redistributed after the core leaves the high-temperature and high-pressure environment, so that the measurement error is larger.
Disclosure of Invention
In order to solve the technical problem that measurement errors are large due to the fact that a conventional tight oil reservoir core huff-puff experiment is influenced by external environment, the specification provides a tight oil core huff-puff experiment method, a tight oil core huff-puff experiment device and a tight oil core huff-puff experiment system.
In order to achieve the above object, an embodiment of the present specification provides a tight oil core huff and puff experimental system, including: the device comprises a displacement pump, an intermediate container, a rock core holder and an upper computer control system;
further comprising: a nuclear magnetic resonance device; wherein,
the middle container is used for respectively providing required crude oil, manganese water and huff-puff injection media for the rock core clamped by the rock core holder;
the core holder is arranged in the nuclear magnetic resonance equipment, and a heating tank and a confining pressure circulating pump are arranged in the nuclear magnetic resonance equipment;
the input end of the displacement pump is connected with the upper computer control system, the output end of the displacement pump is connected with one end of the intermediate container through a control switch, and the other end of the intermediate container is connected with the first input end of the rock core holder;
the second input end of the rock core holder is connected with one end of the heating tank, the other end of the heating tank is connected with one end of the confining pressure circulating pump, and the other end of the confining pressure circulating pump is connected with the input end of the rock core holder.
In order to achieve the above object, an embodiment of the present specification provides a tight oil core huff and puff experimental method, which utilizes the tight oil core huff and puff experimental system of claim 1 to develop a tight oil core huff and puff experiment; the method comprises the following steps:
obtaining first nuclear magnetic T by a compact rock core subjected to simulated formation water saturation treatment through nuclear magnetic resonance equipment2A spectral signal;
generating a first control signal, providing manganese water to a compact oil core subjected to simulated formation water saturation treatment through a displacement pump under the action of the first control signal, and saturating the compact oil core by using the manganese water;
generating a second control signal, providing crude oil to the compact oil core through a displacement pump under the action of the second control signal, saturating the compact oil core with the crude oil, and obtaining second nuclear magnetic T through nuclear magnetic resonance equipment2A spectral signal;
generating a third control signal, providing a huff-and-puff injection medium for the dense oil core through a displacement pump under the action of the third control signal to perform a huff-and-puff experiment, and acquiring corresponding nuclear magnetic T in each huff-and-puff period through nuclear magnetic resonance equipment2A spectral signal.
Preferably, the stimulation injection medium is simulated formation water, activated water or carbon dioxide.
Preferably, the method further comprises:
obtaining the weight and the air permeability of the compact oil core;
and carrying out simulated formation water saturation treatment on the compact oil core, and testing the compact oil core subjected to the simulated formation water saturation treatment to obtain the porosity.
In order to achieve the above object, an embodiment of the present specification provides a tight oil core huff and puff experimental apparatus, which utilizes the tight oil core huff and puff experimental system of claim 1 to perform a tight oil core huff and puff experiment; wherein, the device includes:
first nuclear magnetic field T2A spectrum signal acquisition unit for acquiring a first nuclear magnetic T from the compact oil core subjected to simulated formation water saturation treatment by a nuclear magnetic resonance device2A spectral signal;
the manganese water saturation processing unit is used for generating a first control signal, supplying manganese water to a compact oil core subjected to simulated formation water saturation processing through a displacement pump under the action of the first control signal, and saturating the compact oil core by using the manganese water;
second nuclear magnetic field T2The spectrum signal acquisition unit is used for generating a second control signal, providing crude oil to the compact oil core through the displacement pump under the action of the second control signal, saturating the compact oil core with the crude oil, and acquiring second nuclear magnetism T through the nuclear magnetic resonance equipment2A spectral signal;
nuclear magnetic T in throughput cycle2The spectrum signal acquisition unit is used for generating a third control signal, providing a huff-and-puff injection medium for the dense oil core through the displacement pump under the action of the third control signal to perform a huff-and-puff experiment, and acquiring corresponding nuclear magnetic T in each huff-and-puff period through the nuclear magnetic resonance equipment2A spectral signal.
Preferably, the apparatus further comprises:
the initial processing unit is used for acquiring the weight and the air permeability of the compact oil core;
and the porosity acquisition unit is used for carrying out simulated formation water saturation treatment on the compact oil core and testing the compact oil core subjected to the simulated formation water saturation treatment to obtain the porosity.
In order to achieve the above object, an electronic device according to an embodiment of the present disclosure includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the tight oil core throughput experiment method when executing the computer program.
To achieve the above object, the present specification provides a readable storage medium, on which a computer program is stored, the computer program implementing the steps of the tight oil core huff and puff test method described above when executed.
From top to bottom, compare with prior art, this technical scheme combines together nuclear magnetic resonance's advantage and throughput experiment, need not to take out the rock core in the experimentation and can test the nuclear-magnetism, has effectively avoided the change of the inside fluid distribution that leads to because of the change of pressure and temperature, and the data of surveying is not only truer accurate, and is more high-efficient moreover.
Drawings
In order to more clearly illustrate the embodiments of the present specification 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 specification, and other drawings can be obtained by those skilled in the art without inventive labor.
FIG. 1 is a schematic diagram of a tight oil core huff and puff experimental system provided in the present specification;
fig. 2 is a flow chart of a tight oil core huff and puff experimental method provided in the present description;
FIG. 3 is a nuclear magnetic resonance T of a tight oil core huff and puff experiment provided in the present specification2A spectral schematic;
FIG. 4 is a functional block diagram of a tight oil core huff and puff experimental apparatus proposed in this specification;
fig. 5 is a schematic diagram of an electronic device provided in the present specification.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be described more fully hereinafter with reference to the non-limiting exemplary embodiments shown in the accompanying drawings and detailed in the following description, taken in conjunction with the accompanying drawings, which illustrate, more fully, the exemplary embodiments of the present disclosure and their various features and advantageous details. It should be noted that the features illustrated in the drawings are not necessarily drawn to scale. The present disclosure omits descriptions of well-known materials, components, and process techniques so as not to obscure the example embodiments of the present disclosure. The examples given are intended merely to facilitate an understanding of ways in which the example embodiments of the disclosure may be practiced and to further enable those of skill in the art to practice the example embodiments. Thus, these examples should not be construed as limiting the scope of the embodiments of the disclosure.
Unless otherwise specifically defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Further, in the various embodiments of the present disclosure, the same or similar reference numerals denote the same or similar components.
The working principle of the technical scheme is as follows: the nuclear magnetic resonance technology combines a low-field nuclear magnetic resonance testing technology with a core high-temperature high-pressure displacement physical simulation experiment technology, and can continuously perform nuclear magnetic resonance testing on the core in the displacement huff and puff experiment process. The advantage of nuclear magnetic resonance is combined with the displacement huff and puff experiment by the nuclear magnetic resonance technology, the nuclear magnetic resonance can be tested without taking out a rock core in the experiment process, the change of internal fluid distribution caused by the change of pressure and temperature is effectively avoided, and the measured data is more real and accurate and more efficient.
Based on the reasons, the technical scheme provides a method for a tight oil core huff and puff experiment by using a nuclear magnetic resonance technology, so that the recovery ratio, the fluid distribution change of different internal pores and the residual oil saturation of different pores in the huff and puff process can be accurately measured.
As shown in fig. 1, a schematic diagram of a tight oil core huff and puff experimental system provided in this specification. The method comprises the following steps: the device comprises a displacement pump 1, an intermediate container 2, a rock core holder 3, an upper computer control system 4 and a nuclear magnetic resonance device 5; wherein,
the middle container 2 is used for respectively providing required crude oil, manganese water and huff-puff injection media for the rock core clamped by the rock core clamp 3;
the core holder 3 is arranged in the nuclear magnetic resonance equipment 5, and a heating tank 6 and a confining pressure circulating pump 7 are arranged in the nuclear magnetic resonance equipment 5;
the input end of the displacement pump 1 is connected with the upper computer control system 4, the output end of the displacement pump 1 is connected with one end of the middle container 2 through a control switch, and the other end of the middle container 2 is connected with the first input end of the rock core holder 3;
the second input end of the rock core holder 3 is connected with one end of the heating tank 6, the other end of the heating tank 6 is connected with one end of the confining pressure circulating pump 7, and the other end of the confining pressure circulating pump 7 is connected with the input end of the rock core holder 3.
The pretreated tight oil core was treated using the experimental system shown in FIG. 1 and tested for nuclear magnetic T of saturated simulated formation water2Spectral signal and nuclear magnetic T of saturated oil after elimination of aqueous phase signal2A spectral signal. Setting the temperature and injection pressure, starting throughput experiment, and measuring nuclear magnetism in each throughput period to obtain corresponding nuclear magnetism T2A spectral signal.
As shown in fig. 2, a flow chart of a tight oil core throughput experiment method provided in this specification is provided. The tight oil core huff and puff experiment system shown in fig. 1 is used for carrying out the tight oil core huff and puff experiment. The method comprises the following steps:
step 201): obtaining first nuclear magnetic T by a compact rock core subjected to simulated formation water saturation treatment through nuclear magnetic resonance equipment2A spectral signal.
In this embodiment, the first nuclear magnetic T is acquired2Before spectrum signals, two ends of a compact oil core are cut flat, a core column with the length of 5cm and the diameter of 2.5cm is cut, and after oil washing treatment is carried out on the obtained core column, the weight and the air permeability of the oil-washed core are measured.
And then, preparing proper simulated formation water according to the water salinity of the reservoir formation, performing saturation treatment on the core by using the simulated formation water, and testing the porosity of the compact oil core subjected to the saturation treatment on the simulated formation water.
On the basis, a compact rock core subjected to simulated formation water saturation treatment is arranged on a rock core holder in a nuclear magnetic resonance device, and a first nuclear magnetic T under the state that the rock core is saturated and simulated formation water is recorded by the nuclear magnetic resonance device2A spectral signal.
Step 202): generating a first control signal, providing manganese water to the compact oil core subjected to simulated formation water saturation treatment through a displacement pump under the action of the first control signal, and saturating the compact oil core by using the manganese water.
In this embodiment, the upper computer control system generates a first control signal to drive the displacement pump to supply manganese water to the rock core clamped by the rock core holder through the intermediate container, and the manganese water is used to saturate the compact rock core subjected to simulated formation water saturation treatment. The displacement was 10 Pore Volumes (PV) to remove the water phase nuclear magnetic signal from the dense core.
Step 203): generating a second control signal, providing crude oil to the compact oil core through a displacement pump under the action of the second control signal, saturating the compact oil core with the crude oil, and obtaining second nuclear magnetic T through nuclear magnetic resonance equipment2A spectral signal.
In this embodiment, the upper computer control system generates a second control signal to drive the displacement pump to provide crude oil to the core held by the core holder through the intermediate container, the dense oil core is saturated with the crude oil, the displacement amount is 10 times of the Pore Volume (PV), and the second nuclear magnetic T in the state that the core is saturated with the crude oil is recorded by the nuclear magnetic resonance device2A spectral signal.
Step 204): generating a third control signal, providing a huff-and-puff injection medium for the dense oil core through a displacement pump under the action of the third control signal to perform a huff-and-puff experiment, and acquiring corresponding nuclear magnetic T in each huff-and-puff period through nuclear magnetic resonance equipment2A spectral signal.
In this embodiment, the upper computer control system generates a third control signal to drive the displacement pump to provide a throughput injection medium for the core clamped by the core holder to perform a throughput experiment. And (3) starting a huff and puff experiment, taking a huff and puff injection medium as a displacement fluid, closing the outlet of the core holder, pressurizing to 10MPa, and stewing for 12 hours. Recording nuclear magnetic T once every 2h in the soaking process by a nuclear magnetic resonance device2Spectrum, six nuclear magnetic T recordings throughout the process2Spectra.
Opening a pressure release valve at the injection end after 12 hours to simulate well-opening production, and recording once nuclear magnetic T through nuclear magnetic resonance equipment during opening2Spectra were recorded for 2 hours and then recorded for one nuclear magnetic T2Spectrum, the first throughput period ends.
Based on the above described procedure, the same two throughput cycles are repeated. T of tight oil core huff and puff experiment through online nuclear magnetic equipment2The spectra are shown in FIG. 3.
When nuclear magnetic resonance relaxation time T2<When 10ms, the corresponding pores are clay micropores; relaxation time T2Medium pores are formed when the time is 10-100 ms; when relaxation time T2>At 100ms, this corresponds to large pores.
After the rock core is saturated with crude oil, performing nuclear magnetic resonance detection on the rock core, wherein the calculation formula of the initial oil saturation Soi of the rock core is as follows:
in the formula, Soi-initial oil saturation of core,%; and Mi, an amplitude value corresponding to a certain T2 time point on an oil-saturated oil nuclear magnetic spectrum curve.
The calculation formula of the core recovery rate and the core residual oil saturation is as follows:
r in the formula is core recovery percent; sor-core residual oil saturation,%.
The calculation formula of the movable fluid saturation Som of the core is as follows:
som-saturation of movable fluid in core,%; mi, amplitude value corresponding to a certain T2 time point on a nuclear magnetic spectrum curve after oil displacement.
And (3) evaluating the fluid distribution change inside the core according to the measured T2 spectrum, and calculating the recovery factor, the residual oil saturation and the mobile fluid saturation in different pores of the core by combining formulas 1 to 4, as shown in tables 1 to 3.
TABLE 1 recovery of different porosity during core huff and puff
TABLE 2 residual oil saturation changes at different pore spaces during core huff and puff
TABLE 3 mobile fluid saturations for different pore spaces during core huff and puff
Through the calculation result, various data of the rock core which cannot be obtained originally in the handling experiment process can be obtained, and the test effect of the handling experiment is effectively improved.
As shown in fig. 4, a functional block diagram of a tight oil core huff and puff experimental apparatus provided in this specification is shown. Carrying out tight oil core huff and puff experiments by using the tight oil core huff and puff experiment system of claim 1; wherein, the device includes:
first nuclear magnetic field T2Spectral signal acquisition unit 401 for simulated formation water saturationAnd the processed compact oil core obtains a first nuclear magnetic T through nuclear magnetic resonance equipment2A spectral signal;
the manganese water saturation processing unit 402 is configured to generate a first control signal, provide manganese water to a compact oil core subjected to simulated formation water saturation processing through a displacement pump under the action of the first control signal, and saturate the compact oil core with the manganese water;
second nuclear magnetic field T2A spectrum signal obtaining unit 403, configured to generate a second control signal, provide crude oil to the tight oil core through the displacement pump under the action of the second control signal, saturate the tight oil core with crude oil, and obtain a second nuclear magnetic T through the nuclear magnetic resonance device2A spectral signal;
nuclear magnetic T in throughput cycle2A spectrum signal obtaining unit 404, configured to generate a third control signal, provide a throughput injection medium to the tight oil core through the displacement pump under the action of the third control signal to perform a throughput experiment, and obtain, through the nuclear magnetic resonance device, a corresponding nuclear magnetic T in each throughput period2A spectral signal.
In this embodiment, the apparatus further includes:
the initial processing unit is used for acquiring the weight and the air permeability of the compact oil core;
and the porosity acquisition unit is used for carrying out simulated formation water saturation treatment on the compact oil core and testing the compact oil core subjected to the simulated formation water saturation treatment to obtain the porosity.
As shown in fig. 5, a schematic diagram of an electronic device is provided for the present specification. The experimental method for tight oil core throughput comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the computer program to realize the tight oil core throughput experimental method shown in the figure 2.
The specific functions implemented by the memory and the processor of the compact oil core huff and puff experimental method provided by the embodiment of the present specification can be explained in comparison with the foregoing embodiment in the present specification, and can achieve the technical effects of the foregoing embodiment, and will not be described herein again.
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.
In this embodiment, the present specification further provides a readable storage medium, on which a computer program is stored, where the computer program is executed to implement the steps of the tight oil core throughput experimental method described above.
Compared with the prior art, the advantage of nuclear magnetic resonance is combined with the huff and puff experiment by the technical scheme, the nuclear magnetic resonance can be tested without taking out the rock core in the experiment process, the change of the distribution of the internal fluid caused by the change of pressure and temperature is effectively avoided, and the measured data is more real and accurate and more efficient. Based on the method, the recovery rate of the compact oil core in each period in the huff and puff experiment process, the fluid distribution change of different pores in the core and the condition of residual oil are tested, so that the dissipation of oil and gas is effectively avoided, data which cannot be obtained in the traditional experiment is obtained, and the test accuracy and the test efficiency of the huff and puff experiment of the compact oil core are effectively improved.
Those skilled in the art will also appreciate that, in addition to implementing clients and servers as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the clients and servers implement logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such clients and servers may thus be considered a hardware component, and the means included therein for performing the various functions may also be considered as structures within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
From the above description of the embodiments, it is clear to those skilled in the art that the present specification can be implemented by software plus a necessary general hardware platform. Based on such understanding, the technical solutions of the present specification may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present specification.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, both for the embodiments of the client and the server, reference may be made to the introduction of embodiments of the method described above.
This description may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
In the 90 s of the 20 th century, improvements in a technology could clearly distinguish between improvements in hardware (e.g., improvements in circuit structures such as diodes, transistors, switches, etc.) and improvements in software (improvements in process flow). However, as technology advances, many of today's process flow improvements have been seen as direct improvements in hardware circuit architecture. Designers almost always obtain the corresponding hardware circuit structure by programming an improved method flow into the hardware circuit. Thus, it cannot be said that an improvement in the process flow cannot be realized by hardware physical modules. For example, a Programmable Logic Device (PLD), such as a Field Programmable Gate Array (FPGA), is an integrated circuit whose Logic functions are determined by programming the Device by a user. A digital system is "integrated" on a PLD by the designer's own programming without requiring the chip manufacturer to design and fabricate application-specific integrated circuit chips. Furthermore, nowadays, instead of manually making an integrated Circuit chip, such Programming is often implemented by "logic compiler" software, which is similar to a software compiler used in program development and writing, but the original code before compiling is also written by a specific Programming Language, which is called Hardware Description Language (HDL), and HDL is not only one but many, such as abel (advanced Boolean Expression Language), ahdl (alternate Language Description Language), traffic, pl (core unified Programming Language), HDCal, JHDL (Java Hardware Description Language), langue, Lola, HDL, laspam, hardsradware (Hardware Description Language), vhjhd (Hardware Description Language), and vhigh-Language, which are currently used in most common. It will also be apparent to those skilled in the art that hardware circuitry that implements the logical method flows can be readily obtained by merely slightly programming the method flows into an integrated circuit using the hardware description languages described above.
The controller may be implemented in any suitable manner, for example, the controller may take the form of, for example, a microprocessor or processor and a computer-readable medium storing 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, and an embedded microcontroller, examples of which include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicone Labs C8051F320, the memory controller may also be implemented as part of the control logic for the memory. Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may thus be considered a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a vehicle-mounted human-computer interaction device, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
Although embodiments of the present description provide method steps as described in embodiments or flowcharts, more or fewer steps may be included based on conventional or non-inventive means. 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. When an actual apparatus or end product executes, it may execute sequentially or in parallel (e.g., parallel processors or multi-threaded environments, or even distributed data processing environments) according to the method shown in the embodiment or the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the embodiments of the present description, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of multiple sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), 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.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present description 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 so forth) having computer-usable program code embodied therein.
The embodiments of this specification may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The described embodiments may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. 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. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.
While the specification has been described with respect to the embodiments, those skilled in the art will appreciate that there are numerous variations and permutations of the specification that fall within the spirit and scope of the specification, and it is intended that the appended claims include such variations and modifications as fall within the spirit and scope of the specification.
Claims (8)
1. A tight oil core huff and puff experimental system comprises: the device comprises a displacement pump, an intermediate container, a rock core holder and an upper computer control system; it is characterized in that the preparation method is characterized in that,
further comprising: a nuclear magnetic resonance device; wherein,
the middle container is used for respectively providing required crude oil, manganese water and huff-puff injection media for the rock core clamped by the rock core holder;
the core holder is arranged in the nuclear magnetic resonance equipment, and a heating tank and a confining pressure circulating pump are arranged in the nuclear magnetic resonance equipment;
the input end of the displacement pump is connected with the upper computer control system, the output end of the displacement pump is connected with one end of the intermediate container through a control switch, and the other end of the intermediate container is connected with the first input end of the rock core holder;
the second input end of the rock core holder is connected with one end of the heating tank, the other end of the heating tank is connected with one end of the confining pressure circulating pump, and the other end of the confining pressure circulating pump is connected with the input end of the rock core holder.
2. A tight oil core huff and puff experimental method is characterized in that the tight oil core huff and puff experimental system of claim 1 is used for carrying out a tight oil core huff and puff experiment; the method comprises the following steps:
obtaining first nuclear magnetic T by a compact rock core subjected to simulated formation water saturation treatment through nuclear magnetic resonance equipment2A spectral signal;
generating a first control signal, providing manganese water to a compact oil core subjected to simulated formation water saturation treatment through a displacement pump under the action of the first control signal, and saturating the compact oil core by using the manganese water;
generating a second control signal, providing crude oil to the compact oil core through a displacement pump under the action of the second control signal, saturating the compact oil core with the crude oil, and obtaining second nuclear magnetic T through nuclear magnetic resonance equipment2A spectral signal;
generating a third control signal, providing a huff-and-puff injection medium for the dense oil core through a displacement pump under the action of the third control signal to perform a huff-and-puff experiment, and acquiring corresponding nuclear magnetic T in each huff-and-puff period through nuclear magnetic resonance equipment2A spectral signal.
3. The method of claim 2, wherein the huff-and-puff injection medium is simulated formation water, activated water, or carbon dioxide.
4. The method of claim 2, wherein the method further comprises:
obtaining the weight and the air permeability of the compact oil core;
and carrying out simulated formation water saturation treatment on the compact oil core, and testing the compact oil core subjected to the simulated formation water saturation treatment to obtain the porosity.
5. A tight oil core huff and puff experimental device is characterized in that the tight oil core huff and puff experimental system of claim 1 is used for carrying out tight oil core huff and puff experiments; wherein, the device includes:
first nuclear magnetic field T2A spectrum signal acquisition unit for acquiring a first nuclear magnetic T from the compact oil core subjected to simulated formation water saturation treatment by a nuclear magnetic resonance device2A spectral signal;
the manganese water saturation processing unit is used for generating a first control signal, supplying manganese water to a compact oil core subjected to simulated formation water saturation processing through a displacement pump under the action of the first control signal, and saturating the compact oil core by using the manganese water;
second nuclear magnetic field T2The spectrum signal acquisition unit is used for generating a second control signal, providing crude oil to the compact oil core through the displacement pump under the action of the second control signal, saturating the compact oil core with the crude oil, and acquiring second nuclear magnetism T through the nuclear magnetic resonance equipment2A spectral signal;
nuclear magnetic T in throughput cycle2The spectrum signal acquisition unit is used for generating a third control signal, providing a huff-and-puff injection medium for the dense oil core through the displacement pump under the action of the third control signal to perform a huff-and-puff experiment, and acquiring corresponding nuclear magnetic T in each huff-and-puff period through the nuclear magnetic resonance equipment2A spectral signal.
6. The apparatus of claim 5, wherein the apparatus further comprises:
the initial processing unit is used for acquiring the weight and the air permeability of the compact oil core;
and the porosity acquisition unit is used for carrying out simulated formation water saturation treatment on the compact oil core and testing the compact oil core subjected to the simulated formation water saturation treatment to obtain the porosity.
7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the tight oil core throughout experiment method of any one of claims 2 to 4 when executing the computer program.
8. A readable storage medium having stored thereon a computer program, wherein the computer program when executed performs the steps of the tight oil core throughput experimentation method of any one of claims 2 to 4.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261280A (en) * | 2019-07-19 | 2019-09-20 | 西南石油大学 | A kind of reverse imbibition on-line monitoring experimental provision of high temperature and pressure rock core and experimental method |
| CN110456022A (en) * | 2019-08-13 | 2019-11-15 | 安徽理工大学 | A kind of dynamic monitoring coal seam reservoirs sensibility and mining control simulation experiment system |
| CN112782477A (en) * | 2019-11-11 | 2021-05-11 | 中国石油化工股份有限公司 | Method and system for measuring electrical response characteristics of rock core in different wetting states |
| CN112814651A (en) * | 2021-01-05 | 2021-05-18 | 中国石油天然气股份有限公司 | Oil deposit gas injection throughput experimental device |
| CN113624797A (en) * | 2020-05-07 | 2021-11-09 | 中国石油天然气股份有限公司 | Method and device for detecting fluid in tight rock core |
| CN113640332A (en) * | 2021-08-13 | 2021-11-12 | 西南石油大学 | Fine physical simulation experiment method for compact oil under complex slotted screen condition |
| CN114417593A (en) * | 2022-01-13 | 2022-04-29 | 东北石油大学 | Experimental method for evaluating influence of pore connectivity on shale recovery ratio |
| CN116539815A (en) * | 2023-06-07 | 2023-08-04 | 四川省科源工程技术测试中心有限责任公司 | Device and method suitable for evaluating and optimizing working fluid of oil and gas reservoir |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100277165A1 (en) * | 2009-04-29 | 2010-11-04 | Robert Freedman | Method for determining wettability of an oil reservoir |
| CN105678473A (en) * | 2016-02-22 | 2016-06-15 | 中国石油天然气股份有限公司 | Identification method for oil reservoir water displacement efficiency of water injection development oil reservoir |
| CN106988711A (en) * | 2017-03-24 | 2017-07-28 | 西安石油大学 | A kind of method for improving strong vertical heterogeneity oil reservoir oil displacement effect |
-
2018
- 2018-11-20 CN CN201811382478.XA patent/CN109709131A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100277165A1 (en) * | 2009-04-29 | 2010-11-04 | Robert Freedman | Method for determining wettability of an oil reservoir |
| CN105678473A (en) * | 2016-02-22 | 2016-06-15 | 中国石油天然气股份有限公司 | Identification method for oil reservoir water displacement efficiency of water injection development oil reservoir |
| CN106988711A (en) * | 2017-03-24 | 2017-07-28 | 西安石油大学 | A kind of method for improving strong vertical heterogeneity oil reservoir oil displacement effect |
Non-Patent Citations (2)
| Title |
|---|
| TING CHEN ET AL.: "Evaluation of Displacement Effects of Different Injection Media in Tight Oil Sandstone by Online Nuclear Magnetic Resonance", 《ENERGIES》 * |
| 陈挺 等: "致密油藏气驱微观驱油机理研究", 《中国科技论文》 * |
Cited By (13)
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|---|---|---|---|---|
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| CN110456022A (en) * | 2019-08-13 | 2019-11-15 | 安徽理工大学 | A kind of dynamic monitoring coal seam reservoirs sensibility and mining control simulation experiment system |
| CN112782477A (en) * | 2019-11-11 | 2021-05-11 | 中国石油化工股份有限公司 | Method and system for measuring electrical response characteristics of rock core in different wetting states |
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| CN112814651A (en) * | 2021-01-05 | 2021-05-18 | 中国石油天然气股份有限公司 | Oil deposit gas injection throughput experimental device |
| CN113640332B (en) * | 2021-08-13 | 2023-09-08 | 西南石油大学 | Fine physical simulation experiment method for compact oil under complex stitch net condition |
| CN113640332A (en) * | 2021-08-13 | 2021-11-12 | 西南石油大学 | Fine physical simulation experiment method for compact oil under complex slotted screen condition |
| CN114417593A (en) * | 2022-01-13 | 2022-04-29 | 东北石油大学 | Experimental method for evaluating influence of pore connectivity on shale recovery ratio |
| CN116539815A (en) * | 2023-06-07 | 2023-08-04 | 四川省科源工程技术测试中心有限责任公司 | Device and method suitable for evaluating and optimizing working fluid of oil and gas reservoir |
| CN116539815B (en) * | 2023-06-07 | 2024-03-19 | 四川省科源工程技术测试中心有限责任公司 | Device and method suitable for evaluating and optimizing working fluid of oil and gas reservoir |
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