Method and device for evaluating jamin effect elimination effect, equipment and storage medium

Abstract

This invention discloses a method, apparatus, device, and storage medium for evaluating the effectiveness of eliminating the Jamin effect. The method includes: responding to the filling of a first channel in a microfluidic chip with a first perfluorocarbon extract; determining multiple first pressure differences corresponding to the first perfluorocarbon extract, wherein the first pressure difference is the smallest of multiple second pressure differences required to completely dissolve methane bubbles in the pore throat; determining multiple first durations corresponding to the first perfluorocarbon extract, wherein the first duration is the difference between a first moment and a second moment, where the first moment is the moment when methane bubbles completely dissolve in the pore throat, and the second moment is the moment when methane bubbles begin to enter the pore throat; and evaluating the Jamin effect elimination effect of the first perfluorocarbon extract using the multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract. This method can quantitatively evaluate the Jamin effect elimination effect of the perfluorocarbon extract in the pore throat from both pressure and time dimensions.

Description

Technical Field

[0001] This invention relates to the field of natural gas extraction technology, and in particular to a method, apparatus, equipment, and storage medium for evaluating the effectiveness of eliminating the Jamin effect. Background Technology

[0002] The Jamin effect refers to the additional resistance effect generated when air bubbles pass through pore throats in liquid-liquid or gas-liquid two-phase flow. Usually, because the bubble radius is larger than the pore throat radius, the bubble must deform to pass through, which generates additional capillary resistance. These capillary resistances accumulate in the pores, thus significantly affecting the flow.

[0003] During natural gas hydrate extraction, methane gas released from hydrate decomposition forms bubbles in the reservoir's pore throats, creating a two-phase gas-liquid flow system with formation water. The Jamin effect significantly increases flow resistance, limiting extraction efficiency. Perfluorocarbon extractant solubilization extraction technology directly dissolves methane bubbles and converts them into dissolved methane, which then enters the liquid phase, fundamentally eliminating bubble formation and representing an innovative approach to eliminating the Jamin effect. However, current technologies struggle to effectively and quantitatively assess the effectiveness of perfluorocarbon extractants in eliminating the Jamin effect within the pore throats. Summary of the Invention

[0004] This invention provides a method, apparatus, device, and storage medium for evaluating the elimination effect of the Jamin effect, in order to solve the problem that it is difficult to effectively and quantitatively evaluate the elimination effect of perfluorocarbon extract in pore throats.

[0005] According to one aspect of the present invention, a method for evaluating the effectiveness of eliminating the Jamin effect is provided, the method comprising: In response to the first channel in the microfluidic chip being filled with the first perfluorocarbon extract, a plurality of first pressure differences corresponding to the first perfluorocarbon extract are determined. The first channel includes a pore throat. The first pressure difference is the smallest second pressure difference among a plurality of second pressure differences that completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. Multiple first time intervals are determined for the first perfluorocarbon extract. The first time interval is the difference between the first moment and the second moment. The first moment is the moment when the methane bubbles completely dissolve in the pore throat, and the second moment is the moment when the methane bubbles begin to enter the pore throat. The effectiveness of the first perfluorocarbon extract in eliminating the Jamin effect was evaluated using multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract.

[0006] According to another aspect of the present invention, an evaluation device for the elimination effect of the Jamin effect is provided, the device comprising: The first determining module is used to determine multiple first pressure differences corresponding to the first perfluorocarbon extract in response to the first channel in the microfluidic chip being filled with the first perfluorocarbon extract. The first channel includes a pore throat. The first pressure difference is the minimum second pressure difference among multiple second pressure differences that allow methane bubbles to completely dissolve in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. The second determining module is used to determine multiple first durations corresponding to the first perfluorocarbon extract. The first duration is the difference between the first moment and the second moment. The first moment is the moment when the methane bubbles completely dissolve in the pore throat, and the second moment is the moment when the methane bubbles begin to enter the pore throat. The first evaluation module is used to evaluate the Jamin effect elimination effect of the first perfluorocarbon extract using multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract.

[0007] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising: At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the evaluation method for eliminating the Jamin effect according to any embodiment of the present invention.

[0008] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement an evaluation method for the elimination effect of the Jamin effect according to any embodiment of the present invention.

[0009] The technical solution of this invention, in response to the filling of a first perfluorocarbon extractant into a first channel in a microfluidic chip, determines multiple first pressure differences corresponding to the first perfluorocarbon extractant. The first channel includes a pore throat. The first pressure difference is the smallest of multiple second pressure differences required to completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. Multiple first durations corresponding to the first perfluorocarbon extractant are determined. The first duration is the difference between a first moment and a second moment. The first moment is the moment when methane bubbles completely dissolve in the pore throat, and the second moment is the moment when methane bubbles begin to enter the pore throat. Multiple first durations corresponding to the first perfluorocarbon extractant are then used. The effectiveness of a first perfluorocarbon extractant in eliminating the Jamin effect was evaluated using a pressure differential and multiple first durations. This method enables the elimination of the Jamin effect in natural gas hydrate extraction by dissolving methane bubbles in the first perfluorocarbon extractant. The first pressure differential corresponding to the first perfluorocarbon extractant represents the dissolution pressure differential when methane bubbles are completely dissolved in the first perfluorocarbon extractant in the pore throat, and the first duration corresponding to the first perfluorocarbon extractant represents the dissolution time when methane bubbles are completely dissolved in the first perfluorocarbon extractant in the pore throat. Thus, by using multiple first pressure differentials and multiple first durations corresponding to the first perfluorocarbon extractant, the effectiveness of the first perfluorocarbon extractant in eliminating the Jamin effect in the pore throat can be quantitatively evaluated from both pressure and time dimensions.

[0010] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A flowchart illustrating an evaluation method for eliminating the Jamin effect, provided as an embodiment of the present invention; Figure 2 A horizontal cross-sectional view of a microfluidic chip provided in an embodiment of the present invention; Figure 3 A vertical cross-sectional view of a microfluidic chip provided in an embodiment of the present invention; Figure 4 A flowchart of another method for evaluating the elimination effect of the Jamin effect provided in an embodiment of the present invention; Figure 5This is a two-dimensional evaluation diagram of the Jamin effect elimination effect provided in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of an evaluation device for eliminating the Jamin effect provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of an electronic device for evaluating the effectiveness of eliminating the Jamin effect, as provided in an embodiment of the present invention. Detailed Implementation

[0013] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0014] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0015] Figure 1 This is a flowchart illustrating a method for evaluating the effectiveness of eliminating the Jamin effect, provided by an embodiment of the present invention. This embodiment is applicable to the quantitative evaluation of the Jamin effect elimination effect of perfluorocarbon extracts in pore throats. The method can be executed by a device for evaluating the Jamin effect elimination effect, which can be implemented in hardware and / or software and configured in an electronic device that implements the evaluation method for eliminating the Jamin effect. Figure 1 As shown, the evaluation method for eliminating the Jamin effect includes: S101. In response to the first channel in the microfluidic chip being filled with the first perfluorocarbon extractant, determine a plurality of first pressure differences corresponding to the first perfluorocarbon extractant. The first channel includes a pore throat. The first pressure difference is the smallest second pressure difference among a plurality of second pressure differences that completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel.

[0016] Microfluidic chips are also known as lab-on-a-chip systems or micrototal analysis systems. (Reference) Figure 2 Microfluidic chips can refer to miniature platforms that utilize microfabrication technology to construct microchannel networks on a chip substrate at the square centimeter level, enabling precise manipulation and integrated analysis of fluids. The first perfluorocarbon extractant can refer to a fluorinated solvent primarily composed of perfluorocarbon compounds, used for extraction and separation. The first perfluorocarbon extractant can be used to dissolve methane bubbles. Methane bubbles can refer to bubbles formed from methane gas. When methane bubbles form, they are located between the injection end of the first channel and the pore throat. The second pressure difference can be used to drive the methane bubbles toward the pore throat. Complete dissolution of methane bubbles in the pore throat can mean that the methane bubbles are not pushed through the pore throat in bubble form.

[0017] Specifically, once the first channel in the microfluidic chip is filled with the first perfluorocarbon extractant, methane bubbles can be formed within the first channel and moved towards the pore throat. Then, using the complete dissolution of the methane bubbles in the pore throat as a constraint, a first pressure difference corresponding to the first perfluorocarbon extractant can be determined by a differential pressure sensor. By reforming methane bubbles within the first channel, multiple first pressure differences corresponding to the first perfluorocarbon extractant can be determined.

[0018] For example, the microfluidic chip can be pre-cooled to thermal equilibrium at a preset temperature, and filled with a first perfluorocarbon extract solution in the first channel, and then stabilized to a preset pressure.

[0019] As an optional embodiment of the present invention, determining the first pressure difference corresponding to the first perfluorocarbon extract includes: gradually reducing the second pressure difference from a first preset pressure difference to obtain a plurality of third pressure differences; determining a plurality of fourth pressure differences among the plurality of third pressure differences, wherein the fourth pressure difference is used to control the complete dissolution of methane bubbles in the pore throat; and taking the minimum value among the plurality of fourth pressure differences as the first pressure difference corresponding to the first perfluorocarbon extract.

[0020] Specifically, the first preset pressure difference can be gradually reduced based on a preset step size to obtain multiple third pressure differences. For each of the multiple third pressure differences, a second pressure difference can be set based on the third pressure difference, and methane bubbles can be formed in the first channel. When the methane bubbles completely dissolve in the pore throat, the third pressure difference can be used as the fourth pressure difference. Furthermore, the minimum value among the multiple fourth pressure differences can be used as the first pressure difference corresponding to the first perfluorocarbon extract. By repeating the above process, multiple first pressure differences corresponding to the first perfluorocarbon extract can be obtained.

[0021] As an optional embodiment of the present invention, methane bubbles are formed by injecting methane gas from the first branch of the microfluidic chip into the first channel through a pressure pulse. The first channel is perpendicular to the first branch, and the volume of the methane bubbles is within a preset volume range.

[0022] A pressure pulse can refer to the process in which pressure rises or falls within the pulse duration and propagates in the form of a pressure wave. (Reference) Figure 3 A pressure pulse can inject methane gas from the first branch into the first channel to form methane bubbles. When the volume of the methane bubbles is not within a preset volume range, methane bubbles are reformed. The pulse duration can be within a preset duration range. The preset duration range and preset volume range can be set based on the pore throat. For example, the preset duration range can be 10–50 ms.

[0023] S102. Determine multiple first time intervals corresponding to the first perfluorocarbon extract. The first time interval is the difference between the first moment and the second moment. The first moment is the moment when the methane bubbles completely dissolve in the pore throat, and the second moment is the moment when the methane bubbles begin to enter the pore throat.

[0024] Specifically, by forming methane bubbles in the first channel and moving them toward the pore throat, the moment when the methane bubbles begin to enter the pore throat can be defined as the second moment, and the moment when the methane bubbles completely dissolve in the pore throat can be defined as the first moment. Furthermore, by calculating the difference between the first and second moments, the first duration corresponding to the first perfluorocarbon extract can be obtained. Multiple first durations corresponding to the first perfluorocarbon extract can be determined by reforming methane bubbles within the first channel.

[0025] As an optional embodiment of the present invention, determining the first duration corresponding to the first perfluorocarbon extract includes: determining a first video, which is obtained by image acquisition of a microfluidic chip after methane bubbles are formed in the first channel; taking the moment when the pixel area of ​​the methane bubbles in the first video drops to zero as the first moment, and taking the moment when the methane bubbles in the first video begin to enter the pore throat as the second moment; and determining the first duration corresponding to the first perfluorocarbon extract based on the first moment and the second moment.

[0026] Specifically, the transparency of the microfluidic chip can be greater than a preset transparency threshold. After methane bubbles form in the first channel, an image is captured of the microfluidic chip to obtain a first video, which records the dissolution process of the methane bubbles within the first channel. For example, the first video can be obtained through microscopic imaging. When the pixel area of ​​the methane bubbles in the first video drops to zero, it indicates that the methane bubbles have completely dissolved, thus obtaining the first moment. Then, a second moment is determined based on the first video, and a first duration corresponding to the first perfluorocarbon extract is determined based on the first and second moments to improve the accuracy of determining the first duration. By repeating the above process, multiple first pressure differences corresponding to the first perfluorocarbon extract can be obtained.

[0027] S103. The Jamin effect elimination effect of the first perfluorocarbon extract is evaluated by using multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract.

[0028] Specifically, in natural gas hydrate extraction, the Jamin effect can be described as the additional resistance effect generated when methane bubbles pass through pore throats. The first perfluorocarbon extract eliminates the Jamin effect by dissolving the methane bubbles. The first pressure difference corresponding to the first perfluorocarbon extract represents the dissolution pressure difference when methane bubbles are completely dissolved in the first perfluorocarbon extract in the pore throat, and the first time corresponding to the first perfluorocarbon extract represents the dissolution time when methane bubbles are completely dissolved in the first perfluorocarbon extract in the pore throat. Furthermore, the Jamin effect elimination effect of the first perfluorocarbon extract is evaluated by using multiple first pressure differences and multiple first times corresponding to the first perfluorocarbon extract. This achieves a quantitative evaluation of the Jamin effect elimination effect of the first perfluorocarbon extract in the pore throat from both pressure and time dimensions through bubble phase change dissolution, with the two being independent and complementary.

[0029] In existing technologies, the core displacement method can only obtain the macroscopic permeability statistical average value, and cannot distinguish whether the Jamin effect is reduced due to the dissolution and disappearance of bubbles or because bubbles are physically pushed over the pore throat. The evaluation mechanism does not match the real physical mechanism of the elimination of the Jamin effect by perfluorocarbon extract. The high-pressure PVT method can only measure the thermodynamic equilibrium solubility and cannot reflect the dynamic dissolution and mass transfer process at the pore throat scale. Microfluidic hydrate research methods all focus on gas-water two-phase systems and have never involved the dissolution and elimination process of bubbles by perfluorocarbon extract.

[0030] The technical solution of this invention, in response to the filling of a first perfluorocarbon extractant into a first channel in a microfluidic chip, determines multiple first pressure differences corresponding to the first perfluorocarbon extractant. The first channel includes a pore throat. The first pressure difference is the smallest of multiple second pressure differences required to completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. Multiple first durations corresponding to the first perfluorocarbon extractant are determined. The first duration is the difference between a first moment and a second moment. The first moment is the moment when methane bubbles completely dissolve in the pore throat, and the second moment is the moment when methane bubbles begin to enter the pore throat. Multiple first durations corresponding to the first perfluorocarbon extractant are then used. The effectiveness of a first perfluorocarbon extractant in eliminating the Jamin effect was evaluated using a pressure differential and multiple first durations. This method enables the elimination of the Jamin effect in natural gas hydrate extraction by dissolving methane bubbles in the first perfluorocarbon extractant. The first pressure differential corresponding to the first perfluorocarbon extractant represents the dissolution pressure differential when methane bubbles are completely dissolved in the first perfluorocarbon extractant in the pore throat, and the first duration corresponding to the first perfluorocarbon extractant represents the dissolution time when methane bubbles are completely dissolved in the first perfluorocarbon extractant in the pore throat. Thus, by using multiple first pressure differentials and multiple first durations corresponding to the first perfluorocarbon extractant, the effectiveness of the first perfluorocarbon extractant in eliminating the Jamin effect in the pore throat can be quantitatively evaluated from both pressure and time dimensions.

[0031] Figure 4 This is a flowchart illustrating another method for evaluating the elimination effect of the Jamin effect provided by an embodiment of the present invention. Based on the technical solutions of the above embodiments, this embodiment further optimizes the process of evaluating the elimination effect of the first perfluorocarbon extract using multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract. Schemes not described in detail in this embodiment are found in the above embodiments. This embodiment can be combined with various optional schemes in one or more of the above embodiments. Figure 4 As shown, the evaluation method for eliminating the Jamin effect includes: S201. In response to the first channel in the microfluidic chip being filled with the first perfluorocarbon extractant, determine a plurality of first pressure differences corresponding to the first perfluorocarbon extractant. The first channel includes a pore throat. The first pressure difference is the smallest second pressure difference among a plurality of second pressure differences that completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel.

[0032] S202. Determine multiple first durations corresponding to the first perfluorocarbon extract. The first duration is the difference between the first moment and the second moment. The first moment is the moment when the methane bubbles completely dissolve in the pore throat, and the second moment is the moment when the methane bubbles begin to enter the pore throat.

[0033] S203. Determine the first average value and the second average value. The first average value is the average value of multiple first pressure differences corresponding to the first perfluorocarbon extract, and the second average value is the average value of multiple first durations corresponding to the first perfluorocarbon extract.

[0034] Specifically, the first average value can be obtained by calculating the average of multiple first pressure differences corresponding to the first perfluorocarbon extractant. The second average value can be obtained by calculating the average of multiple first durations corresponding to the first perfluorocarbon extractant.

[0035] S204. The effectiveness of eliminating the Jamin effect of the first perfluorocarbon extract was evaluated using the first average value and the second average value.

[0036] Specifically, the Jamin effect elimination effect of the first perfluorocarbon extract is evaluated using the first average value and the second average value, so as to effectively improve the rationality and accuracy of the evaluation of the Jamin effect elimination effect.

[0037] As an optional embodiment of the present invention, the Jamin effect elimination effect of the first perfluorocarbon extract is evaluated using a first average value and a second average value, including: determining a first comparison result and a second comparison result, wherein the first comparison result is the comparison result of the first average value with a preset pressure difference threshold, and the second comparison result is the comparison result of the second average value with a preset time threshold; and the Jamin effect elimination effect of the first perfluorocarbon extract is evaluated using the first comparison result and the second comparison result.

[0038] Specifically, a first comparison result can be obtained by comparing a first average value with a preset pressure difference threshold. A second comparison result can be obtained by comparing a second average value with a preset time threshold. Furthermore, the Jamin effect elimination effect of the first perfluorocarbon extract is evaluated based on the first and second comparison results, so as to assess the merits of the first perfluorocarbon extract in eliminating the Jamin effect.

[0039] As an optional embodiment of the present invention, the method for evaluating the Jamin effect elimination effect further includes: in response to the filling of the first channel in the microfluidic chip with the second perfluorocarbon extract, determining a plurality of first pressure differences and a plurality of first durations corresponding to the second perfluorocarbon extract, so as to evaluate the Jamin effect elimination effect of the second perfluorocarbon extract using the plurality of first pressure differences and the plurality of first durations corresponding to the second perfluorocarbon extract.

[0040] Specifically, the second perfluorocarbon extractant may differ from the first perfluorocarbon extractant in at least one of the following: main solvent type, viscosity modifier type, viscosity modifier dosage, interface modifier type, and interface modifier dosage. By replacing the first perfluorocarbon extractant filling the first channel with the second perfluorocarbon extractant, and repeatedly determining multiple first pressure differences and multiple first durations corresponding to the second perfluorocarbon extractant, the elimination effect of the second perfluorocarbon extractant on the Jamin effect in the pore throat is quantitatively evaluated using these multiple first pressure differences and multiple first durations, thereby enabling a quantitative comparison of the Jamin effect elimination effects of different perfluorocarbon extractants.

[0041] For example, refer to Figure 5 Using the first average value as the vertical axis and the second average value as the horizontal axis, a two-dimensional evaluation space can be constructed by combining the preset pressure difference threshold and the preset time threshold, so as to intuitively present the Jamin effect elimination effect of different perfluorocarbon extracts in a graphical way.

[0042] The method for evaluating the elimination effect of the Jamin effect in this invention takes only 1.5 to 2 hours for a single complete evaluation process, requiring only about 0.5 mL of perfluorocarbon extract. In contrast, existing core displacement experiments typically take 6 to 48 hours per test, requiring tens to hundreds of milliliters of perfluorocarbon extract. In terms of the two key efficiency indicators of time consumption and extract volume consumption, this invention improves efficiency by approximately 10 to 30 times and 100 to 500 times compared to existing methods, respectively. These advantages enable this invention to rapidly screen different perfluorocarbon extracts, or shorten the optimization cycle of perfluorocarbon extracts, accelerating the development process of perfluorocarbon extracts and reducing development costs.

[0043] The technical solution of this invention, in response to the filling of a first perfluorocarbon extractant into a first channel in a microfluidic chip, determines multiple first pressure differences corresponding to the first perfluorocarbon extractant. The first channel includes a pore throat. The first pressure difference is the smallest of multiple second pressure differences required to completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. Multiple first durations corresponding to the first perfluorocarbon extractant are also determined. The first duration is the difference between a first moment and a second moment. The first moment is the moment when methane bubbles completely dissolve in the pore throat, and the second moment is... The moment when methane bubbles begin to enter the pore throat; determining the first average value and the second average value, where the first average value is the average of multiple first pressure differences corresponding to the first perfluorocarbon extract, and the second average value is the average of multiple first durations corresponding to the first perfluorocarbon extract; using the first average value and the second average value to evaluate the Jamin effect elimination effect of the first perfluorocarbon extract, thus achieving a quantitative evaluation of the Jamin effect elimination effect of the first perfluorocarbon extract in the pore throat through the first average value and the second average value, which can effectively improve the rationality and accuracy of the evaluation of the Jamin effect elimination effect.

[0044] Figure 6 This is a schematic diagram of a device for evaluating the elimination effect of the Jamin effect, provided in an embodiment of the present invention. This embodiment of the invention is applicable to the quantitative evaluation of the elimination effect of perfluorocarbon extracts in pore throats. The device can be implemented in hardware and / or software. Figure 6 As shown, the evaluation device for eliminating the Jamin effect includes: The first determining module 301 is used to determine multiple first pressure differences corresponding to the first perfluorocarbon extract in response to the first channel in the microfluidic chip being filled with the first perfluorocarbon extract. The first channel includes a pore throat. The first pressure difference is the minimum second pressure difference among multiple second pressure differences that allow methane bubbles to completely dissolve in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. The second determining module 302 is used to determine multiple first durations corresponding to the first perfluorocarbon extract. The first duration is the difference between the first moment and the second moment. The first moment is the moment when the methane bubbles completely dissolve in the pore throat, and the second moment is the moment when the methane bubbles begin to enter the pore throat. The first evaluation module 303 is used to evaluate the Jamin effect elimination effect of the first perfluorocarbon extract using multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract.

[0045] Based on any of the above optional technical solutions, optionally, the first determining module 301 includes: a third determining unit, a fourth determining unit, and a fifth determining unit. The third determining unit is used to gradually reduce the second pressure difference from a first preset pressure difference to obtain multiple third pressure differences; the fourth determining unit is used to determine multiple fourth pressure differences among the multiple third pressure differences, the fourth pressure differences being used to control the complete dissolution of methane bubbles in the pore throat; the fifth determining unit is used to take the minimum value among the multiple fourth pressure differences as the first pressure difference corresponding to the first perfluorocarbon extract.

[0046] Based on any of the above optional technical solutions, optionally, the second determining module 302 includes: a sixth determining unit, a seventh determining unit, and an eighth determining unit. The sixth determining unit is used to determine the first video, which is obtained by image acquisition of the microfluidic chip after methane bubbles are formed in the first channel; the seventh determining unit is used to take the moment when the pixel area of ​​the methane bubbles in the first video drops to zero as the first moment, and the moment when the methane bubbles in the first video begin to enter the pore throat as the second moment; the eighth determining unit is used to determine the first duration corresponding to the first perfluorocarbon extract based on the first and second moments.

[0047] Based on any of the above optional technical solutions, optionally, the first evaluation module 303 includes: a ninth determining unit and a second evaluation unit. The ninth determining unit is used to determine a first average value and a second average value, where the first average value is the average of multiple first pressure differences corresponding to the first perfluorocarbon extract, and the second average value is the average of multiple first durations corresponding to the first perfluorocarbon extract; the second evaluation unit is used to evaluate the Jamin effect elimination effect of the first perfluorocarbon extract using the first average value and the second average value.

[0048] Based on any of the above-mentioned optional technical solutions, optionally, the second evaluation unit includes: a tenth determining subunit and a third evaluation subunit. The tenth determining subunit is used to determine a first comparison result and a second comparison result, wherein the first comparison result is a comparison of a first average value with a preset pressure difference threshold, and the second comparison result is a comparison of a second average value with a preset time threshold; the third evaluation subunit is used to evaluate the Jamin effect elimination effect of the first perfluorocarbon extract using the first comparison result and the second comparison result.

[0049] Based on any of the above optional technical solutions, optionally, methane bubbles are formed by injecting methane gas from the first branch in the microfluidic chip into the first channel through a pressure pulse. The first channel is perpendicular to the first branch, and the volume of the methane bubbles is within a preset volume range.

[0050] Based on any of the above-mentioned optional technical solutions, the evaluation device for eliminating the Jamin effect may optionally include a fourth evaluation module. The fourth evaluation module is used to determine multiple first pressure differences and multiple first durations corresponding to the second perfluorocarbon extract in response to the first channel in the microfluidic chip being filled with the second perfluorocarbon extract, so as to evaluate the Jamin effect elimination effect of the second perfluorocarbon extract using the multiple first pressure differences and multiple first durations corresponding to the second perfluorocarbon extract.

[0051] The technical solution of this invention involves a first determining module 301 responding to the filling of a first channel in a microfluidic chip with a first perfluorocarbon extractant, determining multiple first pressure differences corresponding to the first perfluorocarbon extractant. The first channel includes a pore throat. The first pressure difference is the smallest second pressure difference among multiple second pressure differences required to completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. A second determining module 302 determines multiple first durations corresponding to the first perfluorocarbon extractant. The first duration is the difference between a first moment and a second moment. The first moment is the moment when methane bubbles completely dissolve in the pore throat, and the second moment is the moment when methane bubbles begin to enter the pore throat. A first evaluation module 303 then measures... The effectiveness of the first perfluorocarbon extract in eliminating the Jamin effect was evaluated using multiple first pressure differentials and multiple first durations corresponding to the first perfluorocarbon extract. This enabled the elimination of the Jamin effect in natural gas hydrate extraction by dissolving methane bubbles in the perfluorocarbon extract. The first pressure differential corresponding to the first perfluorocarbon extract represents the dissolution pressure differential when methane bubbles are completely dissolved in the first perfluorocarbon extract in the pore throat, and the first duration corresponding to the first perfluorocarbon extract represents the dissolution time when methane bubbles are completely dissolved in the first perfluorocarbon extract in the pore throat. Thus, the effectiveness of the first perfluorocarbon extract in eliminating the Jamin effect in the pore throat was quantitatively evaluated from both pressure and time dimensions using multiple first pressure differentials and multiple first durations corresponding to the first perfluorocarbon extract.

[0052] The evaluation device for eliminating the Jamin effect provided in this embodiment of the invention can execute the evaluation method for eliminating the Jamin effect provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0053] Figure 7This is a schematic diagram of an electronic device for evaluating the effectiveness of eliminating the Jamin effect, provided as an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0054] like Figure 7 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded into the RAM 13 from storage unit 18. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0055] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0056] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as methods for evaluating the effectiveness of Jamin effect elimination.

[0057] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication unit 19, or installed from storage unit 18, or installed from ROM 12. When the computer program is executed by processor 11, it performs the functions defined in the methods of the embodiments of the present invention.

[0058] In some embodiments, the method for evaluating the effectiveness of Jamin effect elimination can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method for evaluating the effectiveness of Jamin effect elimination described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the method for evaluating the effectiveness of Jamin effect elimination by any other suitable means (e.g., by means of firmware).

[0059] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transferring data and instructions to the storage system, the at least one input device, and the at least one output device.

[0060] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0061] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0062] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0063] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0064] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0065] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0066] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for evaluating the effectiveness of eliminating the Jamin effect, characterized in that, The method includes: In response to the first channel in the microfluidic chip being filled with a first perfluorocarbon extractant, a plurality of first pressure differences corresponding to the first perfluorocarbon extractant are determined. The first channel includes a pore throat. The first pressure difference is the smallest second pressure difference among a plurality of second pressure differences that completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. Multiple first durations are determined for the first perfluorocarbon extract, where the first duration is the difference between a first moment and a second moment. The first moment is the moment when methane bubbles completely dissolve in the pore throat, and the second moment is the moment when methane bubbles begin to enter the pore throat. The effectiveness of the first perfluorocarbon extract in eliminating the Jamin effect was evaluated using multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract.

2. The method according to claim 1, characterized in that, Determining the first pressure difference corresponding to the first perfluorocarbon extract includes: The second pressure difference is gradually reduced from the first preset pressure difference to obtain multiple third pressure differences; Determine a plurality of fourth pressure differences among the plurality of third pressure differences, the fourth pressure differences being used to control the complete dissolution of methane bubbles in the pore throat; The minimum value among the plurality of fourth pressure differences is taken as the first pressure difference corresponding to the first perfluorocarbon extract.

3. The method according to claim 1, characterized in that, Determining the first duration corresponding to the first perfluorocarbon extract includes: The first video is determined to be obtained by image acquisition from the microfluidic chip after methane bubbles are formed in the first channel; The moment when the pixel area of ​​the methane bubble in the first video drops to zero is taken as the first moment, and the moment when the methane bubble in the first video begins to enter the pore throat is taken as the second moment. The first duration corresponding to the first perfluorocarbon extract is determined based on the first time point and the second time point.

4. The method according to claim 1, characterized in that, The effectiveness of the first perfluorocarbon extract in eliminating the Jamin effect was evaluated using multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract, including: Determine a first average value and a second average value, wherein the first average value is the average of multiple first pressure differences corresponding to the first perfluorocarbon extract, and the second average value is the average of multiple first durations corresponding to the first perfluorocarbon extract; The effectiveness of eliminating the Jamin effect of the first perfluorocarbon extract was evaluated using the first average value and the second average value.

5. The method according to claim 4, characterized in that, The effectiveness of the first perfluorocarbon extract in eliminating the Jamin effect was evaluated using the first average value and the second average value, including: Determine a first comparison result and a second comparison result, wherein the first comparison result is the comparison result between the first average value and a preset pressure difference threshold, and the second comparison result is the comparison result between the second average value and a preset duration threshold; The effectiveness of the first perfluorocarbon extract in eliminating the Jamin effect was evaluated using the first comparison results and the second comparison results.

6. The method according to claim 1, characterized in that, The methane bubbles are formed by injecting methane gas from the first branch of the microfluidic chip into the first channel through a pressure pulse. The first channel is perpendicular to the first branch, and the volume of the methane bubbles is within a preset volume range.

7. The method according to claim 1, characterized in that, The method further includes: In response to the filling of the first channel in the microfluidic chip with the second perfluorocarbon extract, a plurality of first pressure differences and a plurality of first durations corresponding to the second perfluorocarbon extract are determined, so as to evaluate the Jamin effect elimination effect of the second perfluorocarbon extract using the plurality of first pressure differences and the plurality of first durations corresponding to the second perfluorocarbon extract.

8. An evaluation device for the elimination effect of the Jamin effect, characterized in that, The device includes: The first determining module is used to determine a plurality of first pressure differences corresponding to the first perfluorocarbon extract in response to the first channel in the microfluidic chip being filled with the first perfluorocarbon extract. The first channel includes a pore throat. The first pressure difference is the smallest second pressure difference among a plurality of second pressure differences that would completely dissolve methane bubbles in the pore throat. The second pressure difference is the pressure difference between the injection end and the outflow end of the first channel. The second determining module is used to determine multiple first durations corresponding to the first perfluorocarbon extract, wherein the first duration is the difference between the first moment and the second moment, the first moment is the moment when the methane bubbles completely dissolve in the pore throat, and the second moment is the moment when the methane bubbles begin to enter the pore throat. The first evaluation module is used to evaluate the Jamin effect elimination effect of the first perfluorocarbon extract using multiple first pressure differences and multiple first durations corresponding to the first perfluorocarbon extract.

9. An electronic device, characterized in that, The electronic device includes: At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the evaluation method for eliminating the Jamin effect according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the evaluation method for eliminating the Jamin effect as described in any one of claims 1-7.

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