CN112378818B - Shale reservoir wettability evaluation method and device - Google Patents
Shale reservoir wettability evaluation method and device Download PDFInfo
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Abstract
The embodiment of the specification provides a shale reservoir wettability evaluation method and device. The method comprises the following steps: acquiring a shot image corresponding to a sample to be detected; the sample to be tested comprises a shale reservoir and a target fluid on the surface of the shale reservoir; the captured image is used for displaying a contact angle between the shale reservoir and the target fluid; calculating a contact angle wettability parameter of the sample to be measured by using the contact angle; measuring the spontaneous imbibition mass of the shale reservoir into the target fluid; determining the spontaneous imbibition wettability parameter of the sample to be tested according to the spontaneous imbibition quality; acquiring a nuclear magnetic resonance spectrum corresponding to the sample to be detected to determine the nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid; obtaining the nuclear magnetic wettability parameter of the sample to be detected through the nuclear magnetic resonance quality; and evaluating the wettability of the shale reservoir stratum by integrating the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter.
Description
Technical Field
The embodiment of the specification relates to the technical field of geological exploration and development, in particular to a shale reservoir wettability evaluation method and device.
Background
Wettability is one of the surface properties of an object, mainly used to reflect the tendency between a solid and a liquid, and is a result of the balance of surface tension and surface force. Specifically, the wetting fluid spontaneously spreads on the solid surface, and the non-wetting fluid spontaneously shrinks the contact area with the solid surface to form a droplet shape. In geological and reservoir engineering, wettability affects the interaction between geological fluids and shale reservoirs. Therefore, the wettability between the shale reservoir and the fluid is determined, the seepage rule of the fluid in the reservoir can be mastered, and then a corresponding production scheme is designated to produce the oil reservoir in the reservoir.
Currently in determining the wettability of a shale reservoir, the contact angle may be determined by taking an image of the contact between the fluid and the shale reservoir to determine the corresponding contact angle, and determining the wettability of the shale reservoir from the contact angle. However, shale reservoirs in practical applications often have strong heterogeneity, that is, each region of a shale reservoir sample may have different wettability. The method can only be used for testing the wettability of partial areas of the shale reservoir, and cannot be used for well evaluating the overall wettability of the shale reservoir sample. Therefore, a method capable of comprehensively and accurately evaluating wettability of shale reservoir samples is needed.
Disclosure of Invention
The embodiment of the specification aims to provide a shale reservoir wettability evaluation method and device, so as to solve the problem of how to comprehensively and accurately evaluate wettability of shale reservoir samples.
In order to solve the technical problem, an embodiment of the present specification provides a shale reservoir wettability evaluation method, including:
acquiring a shot image corresponding to a sample to be detected; the sample to be tested comprises a shale reservoir and a target fluid on the surface of the shale reservoir; the captured image is used for displaying a contact angle between the shale reservoir and the target fluid;
calculating a contact angle wettability parameter of the sample to be measured by using the contact angle;
measuring the spontaneous imbibition mass of the shale reservoir into the target fluid;
determining the spontaneous imbibition wettability parameter of the sample to be tested according to the spontaneous imbibition quality;
acquiring a nuclear magnetic resonance spectrum corresponding to the sample to be detected to determine the nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid;
obtaining the nuclear magnetic wettability parameter of the sample to be detected through the nuclear magnetic resonance quality;
and evaluating the wettability of the shale reservoir stratum by integrating the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter.
The embodiment of the present specification further provides a shale reservoir wettability evaluation device, including:
the shot image acquisition module is used for acquiring a shot image corresponding to the sample to be detected; the sample to be tested comprises a shale reservoir and a target fluid on the surface of the shale reservoir; the captured image is used for displaying a contact angle between the shale reservoir and the target fluid;
the contact angle wettability parameter calculation module is used for calculating the contact angle wettability parameter of the sample to be measured by utilizing the contact angle;
the spontaneous imbibition quality measuring module is used for measuring the spontaneous imbibition quality of the shale reservoir layer for imbibing the target fluid;
the spontaneous imbibition wettability parameter determination module is used for determining the spontaneous imbibition wettability parameter of the sample to be detected according to the spontaneous imbibition quality;
the nuclear magnetic resonance spectrum acquisition module is used for acquiring a nuclear magnetic resonance spectrum corresponding to the sample to be detected so as to determine the nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid;
the nuclear magnetic wettability parameter calculating module is used for calculating the nuclear magnetic wettability parameter of the sample to be detected through the nuclear magnetic resonance quality;
and the wettability evaluation module is used for evaluating the wettability of the shale reservoir stratum by integrating the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter.
According to the technical scheme provided by the embodiment of the specification, when the wettability of the shale reservoir is evaluated, firstly, a shot image corresponding to a sample to be tested is obtained, and a contact angle between a target fluid and the shale reservoir is determined based on the shot image, so that a corresponding contact angle wettability parameter can be determined according to the contact angle; then, the spontaneous imbibition quality of the shale reservoir for imbibing the target fluid through the spontaneous imbibition phenomenon can be measured, and then the spontaneous imbibition wettability parameter corresponding to the shale reservoir is determined through the spontaneous imbibition phenomenon; and then, acquiring a corresponding nuclear magnetic resonance spectrum by performing nuclear magnetic resonance on the sample to be detected, further analyzing the nuclear magnetic resonance spectrum to determine the nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid, and calculating the nuclear magnetic wettability parameter of the sample to be detected according to the nuclear magnetic resonance quality. After the corresponding parameters are determined through the three modes, the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter can be integrated to evaluate the wettability of the shale reservoir. The method realizes the evaluation of the wettability of the shale reservoir by integrating different testing methods, further overcomes the defects of different evaluation methods, and realizes the comprehensive and accurate evaluation of the wettability of the shale reservoir.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described 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 creative efforts.
Fig. 1 is a flow chart of a method for evaluating wettability of a shale reservoir according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a calculation of contact angle according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a shale wettability comprehensive characterization device according to an embodiment of the present disclosure;
fig. 4 is a block diagram of an apparatus for evaluating wettability of a shale reservoir according to an embodiment of the present disclosure.
Description of reference numerals: 1. an automatic adjusting knob; 2. a high-definition camera module and a slide rail thereof; 3. a movable stage; 4. a weighing sensor; 5. a mechanical arm; 6. a data exchange interface; 7. a sealing cover; 8. spontaneous imbibition of fluid; 9. wetting angle test fluid 1; 10. wetting angle test fluid 2; 11. a length measuring instrument; 12. an analytical balance; 13. function keys; 14. a sample; 15. a data exchange interface; 16. function keys; 17. a number key; 18. a display screen; 19. a knob; 20. a switch; 21. a data exchange interface; 22. a radio frequency transmitter; 23. a radio frequency amplifier; 24. a magnet; 25. a field scanning coil; 26. a sample chamber; 27. An audio field modulation generator; 28. a scan generator; 29. a data exchange interface; 30. a computer data exchange terminal; 31. A computer and software platform; 32. and (4) a conveyor belt.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present specification without any creative effort shall fall within the protection scope of the present specification.
In order to solve the technical problem, an embodiment of the specification provides a shale reservoir wettability evaluation method. As shown in fig. 1, the shale reservoir wettability evaluation method may specifically include the following steps.
S110: acquiring a shot image corresponding to a sample to be detected; the sample to be tested comprises a shale reservoir and a target fluid on the surface of the shale reservoir; the captured image is used to demonstrate a contact angle between the shale reservoir and the target fluid.
The sample to be tested may be a target sample for performing the shale reservoir wettability evaluation method. Specifically, the sample to be tested may include a shale reservoir and a target fluid on the surface of the shale reservoir.
The shale reservoir may be a rock sample collected from a reservoir of interest. In practical application, in order to ensure the effectiveness of the implementation of the experimental process, the shale reservoir may be polished to have a regular shape. The specific shape of polishing the shale reservoir can be set according to the requirements of practical application, and is not described herein any more.
The target fluid is the fluid applied in this test corresponding to the shale reservoir. Since the shale reservoirs may have different wettability corresponding to different fluids, different fluids may be dropped on the shale reservoirs, respectively, to determine wettability between the different target fluids and the shale reservoirs, respectively.
In particular, the target fluid may be water and/or oil. Correspondingly, the method can be used for judging the water wettability and the oil wettability of the shale reservoir, namely judging the wetting degree of the shale reservoir to water and oil respectively.
The specific manner of disposing the target fluid on the surface of the shale reservoir may be directly dripping on the surface of the shale reservoir, or may be other manners of causing the reservoir target fluid to exist on the surface of the shale reservoir, which is not described herein again.
After the sample to be detected is set, a shot image corresponding to the sample to be detected can be obtained. The captured image may be captured from a side of the sample to be tested to determine a contact angle formed between the target fluid and the shale reservoir.
The contact angle is an angle with different sizes corresponding to different shapes formed by the target fluid on the surface of the shale reservoir under the condition that the shale reservoir has different wettability.
The specific process of determining the contact angle is described with reference to fig. 2. FIG. 2 shows a certain adhesive layerSchematic representation of a shale reservoir with a target fluid. After the corresponding image is acquired, the formula may be utilized
And calculating a contact angle, wherein theta is the contact angle, h is the height of a liquid drop formed on the surface of the shale reservoir by the target fluid, and D is the chord length of the surface of the shale reservoir contacted by the target fluid.
The magnitude of the contact angle is used to reflect the degree of wetting between the shale reservoir and the target fluid. By way of illustration, with a specific example, when the contact angle is 0 degrees, the target fluid is completely attached to the surface of the shale reservoir, and is in a completely wet state; when the contact angle is larger than 0 degree and smaller than 90 degrees, the target fluid is basically attached to the surface of the shale reservoir stratum, and the shale reservoir stratum is in a partial wetting state; when the contact angle is larger than 90 degrees and smaller than 0 degree, only a small part of the target fluid is attached to the surface of the shale reservoir, and the shale reservoir is in a non-wetting state; at the contact angle of 180 degrees, there is almost no contact area between the target fluid and the shale reservoir, which is in a completely non-wet state.
S120: and calculating the contact angle wettability parameter of the sample to be measured by using the contact angle.
After the contact angle between the shale reservoir and the target fluid is obtained, the contact angle wettability parameter can be calculated by utilizing the contact angle.
In some embodiments, water and oil may be used as the target fluids, respectively, and the water wettability and oil wettability of the shale reservoir may be determined accordingly. Accordingly, in calculating the contact angle wettability parameter, a formula may be used
Calculating a contact angle wettability parameter, wherein CAI is the contact angle wettability parameter, θwIs the wetting angle of water, thetaoThe angle is oil-wet.
However, since the wettability between the target fluid and the shale reservoir is determined by using the contact angle, the wettability obtained by capturing the image is often only the wettability of a partial region corresponding to the shale reservoir. In practical applications, shale reservoirs often have heterogeneity, that is, different regions of the same shale reservoir sample may have different wettability characteristics. The evaluation of the wettability of the shale reservoir directly using the delivered contact angle wettability parameter may lack some accuracy. Therefore, an overall modification index may additionally be calculated to modify the contact angle wettability parameter.
The global correction index is used for weakening errors generated by replacing a part of regions in a contact angle wettability parameter with a whole body. Specifically, a formula can be utilized
Calculating an overall correction index, wherein a is the overall correction index, SdIs the projected area of the target fluid in the captured image, SsAnd the projected area of the shale reservoir in the shot image is obtained.
After the overall correction index is obtained through calculation, correction can be performed during subsequent evaluation of wettability of the shale reservoir, so that a more accurate evaluation result is obtained.
S130: and measuring the spontaneous imbibition mass of the shale reservoir into the target fluid.
After the captured image is acquired, the spontaneous imbibition quality can also be measured. The spontaneous imbibition mass is the mass of the shale reservoir that imbibes the target fluid under the action of spontaneous imbibition. The shale reservoir can suck certain target fluid under the condition of having certain wettability. The better the wettability, the greater the amount of target fluid that is aspirated. Thus, the corresponding spontaneous imbibition mass can also be determined by the measured mass of the shale reservoir.
Specifically, the process of measuring the spontaneous imbibition quality may be to hold the shale reservoir and then contact the bottom surface of the shale reservoir with the target fluid, and simultaneously measure the quality of the shale reservoir in real time. After the curve of the mass change of the shale reservoir is obtained, the slope of the mass change curve can be obtained, and then the slope of the mass change curve is utilized to evaluate the spontaneous imbibition characteristic of the shale reservoir.
Therefore, the spontaneous imbibition mass may be a series of values of the mass of the shale reservoir that changes during the course of spontaneous imbibition, or may be the mass of the target fluid adsorbed by the shale reservoir over a fixed period of time.
In practical application, the spontaneous imbibition quality can be obtained in other manners according to needs, and is not limited to the above examples, and is not described herein again.
S140: and determining the spontaneous imbibition wettability parameter of the sample to be detected according to the spontaneous imbibition quality.
After the spontaneous imbibition quality is obtained, determining the spontaneous imbibition wettability parameter of the sample to be tested according to the spontaneous imbibition quality.
In some embodiments, the spontaneous imbibition characteristics of the shale reservoir for water and oil may be measured separately. Correspondingly, when the spontaneous imbibition quality of the sample to be detected is measured, the spontaneous imbibition water absorption quality and the spontaneous imbibition oil absorption quality of the sample to be detected can be respectively measured, and the spontaneous imbibition wettability parameter can be calculated by utilizing the spontaneous imbibition water absorption quality and the spontaneous imbibition oil absorption quality. Specifically, a formula can be utilized
Calculating the spontaneous imbibition wettability parameter, wherein SIW is the spontaneous imbibition wettability parameter, SIwFor spontaneous imbibition of water-absorbing mass, SIoFor spontaneous imbibition of oil absorption mass, j is such that SIw×10jAnd SIo×10jIs the minimum value of an integer.
However, in the process of the spontaneous imbibition experiment, the shale reservoir may contain a certain proportion of clay minerals, and the clay minerals may swell after absorbing moisture, thereby affecting the judgment of the wettability of the shale reservoir. Therefore, after obtaining the spontaneous imbibition wettability parameter, a swelling index may also be calculated to correct the spontaneous imbibition wettability parameter. The swelling index is used for weakening errors of the calculation result caused by the water absorption swelling of the clay.
Specifically, a formula can be utilized
Calculating the swelling index, wherein b is the swelling index, k is the clay mineral percentage, and mwFor shale reservoir water absorption quality, j is the smallest integer such that b is the pure decimal number.
After the swelling index is obtained through calculation, the spontaneous imbibition wettability parameter can be corrected by using the swelling index, so that a more accurate evaluation result can be obtained in the subsequent evaluation process.
S150: and acquiring a nuclear magnetic resonance spectrum corresponding to the sample to be detected so as to determine the nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid.
After the spontaneous imbibition mass is obtained, a nuclear magnetic resonance experiment can be performed on the sample to be tested to obtain a nuclear magnetic resonance spectrum corresponding to the sample to be tested. And obtaining the mass of the sucked target fluid in the shale reservoir from the nuclear magnetic resonance spectrum as the corresponding nuclear magnetic resonance mass.
The specific process of performing the nmr experiment may be performed according to the requirements of practical applications, and is not described herein again.
It should be noted that the execution sequence of the spontaneous imbibition experiment and the nuclear magnetic resonance experiment corresponding to the sample to be tested may not be limited, and the embodiment of the present specification only introduces one of the implementation manners, and the execution sequence of the spontaneous imbibition experiment and the nuclear magnetic resonance experiment may also be changed in practical application, which is not limited herein.
S160: and solving the nuclear magnetic wettability parameter of the sample to be detected through the nuclear magnetic resonance quality.
After the nuclear magnetic resonance mass is acquired, the nuclear magnetic wettability parameter can be found using the nuclear magnetic resonance mass.
In some embodiments, water and oil may be used as the target fluid, and then the nmr masses of the sample to be measured corresponding to the water and the oil, respectively, are sequentially measured, so as to obtain the nmr water absorption and the nmr oil absorption. Accordingly, when the nuclear magnetic wettability parameter is obtained, the nuclear magnetic resonance water absorption and the nuclear magnetic resonance oil absorption can be simultaneously used for obtaining.
In particular, a formula may be utilized
Calculating the Nuclear magnetic wettability parameter, in which NMRIWFor nuclear magnetic wettability parameters, NMRwWater absorption for nuclear magnetic resonance, NMRoIs nuclear magnetic resonance oil absorption, j is such that NMR isw×10jAnd NMRo×10jIs the minimum value of an integer.
Because when utilizing water and oil as the target fluid to carry out the nuclear magnetic resonance experiment respectively, can not change the shale reservoir in the sample that awaits measuring, correspondingly, if utilize the shale reservoir absorbs water earlier oil absorption then, then probably cause hydrophilic pore in the shale reservoir surrounds oleophylic pore after absorbing water for the unable oil content of absorbing of oleophylic pore that surrounds, and then causes the influence to the experimental result. Therefore, after the nuclear magnetic wettability parameter is calculated, a loss parameter may also be calculated to correct the nuclear magnetic wettability parameter. The loss index is the error that is used to weaken the inability of lipophilic pores surrounded by hydrophilic pores to saturate the fluid.
In particular, a formula may be utilized
And calculating a loss index, wherein c is the loss index, TOC is the total organic carbon content of the sample to be detected, w is the percentage of hydrophilic minerals, phi is the porosity of the shale reservoir, and j is the minimum integer enabling c to be a pure decimal.
After the loss index is obtained through calculation, the loss index can be used for weakening errors of measurement results caused by the fact that oleophylic pores cannot absorb oil in practical application, and therefore accuracy of final calculation results is improved.
S170: and evaluating the wettability of the shale reservoir stratum by integrating the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter.
Through the steps, a contact angle wettability parameter, a imbibition wettability parameter and a nuclear magnetic wettability parameter are obtained through calculation, and the wettability of the shale reservoir can be evaluated by combining the parameters. Because different methods have certain errors when determining the wettability of the shale reservoir, the evaluation of the wettability of the shale reservoir by integrating the parameters can be more comprehensively and accurately evaluated.
The specific way of using the parameters to perform wettability evaluation may be to perform weighted average on the parameters, or to directly add the parameters to obtain a final calculation result, and accordingly, to evaluate the integrated parameters by using a preset evaluation criterion. The specific evaluation process may be set according to the requirements of the actual application, and is not limited to the above embodiment, which is not described herein again.
In some embodiments, if the overall correction index, the swelling index and the loss index are calculated separately, the indexes may be used to perform corresponding corrections when evaluating wettability using the parameters. Specifically, the formula IW ═ can be used (SIW + NMRI)W) Calculating the comprehensive wettability parameter by multiplying b by c and CAI by a, wherein IW is the comprehensive wettability parameter, SIW is the spontaneous imbibition wettability parameter, and NMRIWIs the nuclear magnetic wettability parameter, b is the swelling index, c is the loss index, CAI is the contact angle wettability parameter, and a is the bulk correction index. Accordingly, the wettability of the shale reservoir may be evaluated using the above-described integrated wettability parameters.
In some embodiments, after obtaining the integrated wettability parameter, the overall wettability parameter can be determined to be positive or negative. Specifically, the shale reservoir may be determined to be hydrophilic in wettability when the comprehensive wettability parameter is greater than zero; and under the condition that the comprehensive wettability parameter is less than zero, determining that the shale reservoir stratum is oleophilic wettability.
In some embodiments, after the comprehensive wettability parameter is obtained, the wettability may also be determined by the size of the comprehensive wettability parameter, and specifically, the shale reservoir may be determined to be of a substantially non-wetting property under the condition that the absolute value of the comprehensive wettability parameter is smaller than a wettability threshold; determining the shale reservoir to be weakly wetting under the condition that the absolute value of the comprehensive wettability parameter is not less than a wettability threshold value and less than a wetting strength threshold value; and determining that the shale reservoir is of a strong wetting property under the condition that the absolute value of the comprehensive wettability parameter is not less than the wetting strength threshold value.
The wettability threshold and the wetting strength threshold can be set according to the specific situation of the practical application, for example, the wettability threshold can be set to 0.5, and the wetting strength threshold can be set to 1.0, so as to perform specific wettability evaluation.
A specific scenario example is used for explaining, as shown in fig. 3, a process of using a corresponding shale wettability comprehensive characterization device to realize wettability measurement is provided, wherein the shale wettability comprehensive characterization device can be divided into an experiment module and a data processing module, the experiment module is divided into a wetting angle/spontaneous imbibition test area and a nuclear magnetic resonance test area, and the whole test process can be automatically completed. The experimental test sequence is as follows: water phase wetting contact angle-oil phase wetting contact angle/water phase spontaneous imbibition (at the same time) -nuclear magnetic resonance-oil phase spontaneous imbibition-nuclear magnetic resonance. The whole test flow is as follows:
1. in the wetting angle/spontaneous imbibition test module area, a mechanical arm grabs a sample and places the sample on a movable objective table, the sample is positioned below the center of a wetting angle dropper, a drop of water with specified mass is dripped to carry out wetting angle test, and a high-definition camera in the water drop lagging device can move along a slide rail to shoot a wetting angle photo at multiple angles and transmit the wetting angle photo to a computer.
2. The conveyor belt sends the sample to the size/quality testing module area, the length measuring instrument can automatically measure the length, width and height data of the sample and transmit the data to the computer, and meanwhile, the quality data of the sample can be tested and transmitted to the computer.
3. The conveyer belt sends the sample to wetting angle/spontaneous imbibition test module region, the slip arm will snatch the sample and invert, sealed lid can be opened to both sides, the sample will be removed to the bottom and just contact the surface of water in the glass dish, begin the spontaneous imbibition test of aqueous phase, weighing sensor will begin working, convey the real-time quality of sample to the computer, simultaneously, the removal objective table can be packed up, wetting angle burette can move to the sample top and drip a drop of oil of appointed quality and carry out the wetting angle test, high definition digtal camera can follow the slide rail and remove the multi-angle photograph of taking the wetting angle and convey to the computer.
4. And after the water phase spontaneous imbibition experiment is finished, the conveyor belt sends the sample to a nuclear magnetic resonance room for nuclear magnetic testing, and test data are transmitted to the computer.
5. After the nuclear magnetic test is finished, the conveyor belt sends the sample to the wetting angle/spontaneous imbibition test module area, the mechanical arm places the sample at the bottom and just contacts the oil liquid level in the glass disc, and simultaneously the weighing sensor starts working and transmits the real-time mass of the sample to the computer.
6. And after the spontaneous oil phase imbibition experiment is finished, the conveyor belt sends the sample to a nuclear magnetic resonance room for nuclear magnetic testing, and test data are transmitted to the computer.
After all the experimental tests are finished, the computer analyzes the data and calculates the following parameters: the method comprises the following steps of calculating a water phase spontaneous imbibition slope, an oil phase spontaneous imbibition slope, a spontaneous imbibition wetting index, a water phase wetting contact angle (negative value), an oil phase wetting contact angle, a nuclear magnetic resonance wetting index, an overall index, an expansion index and a loss index, and inputting corresponding sample information when calculating the three indexes. When all indexes are calculated, the computer may complete the calculation of the shale reservoir wettability according to the method in step S170.
By the above-described apparatus, the measurement was performed on sample 1 and sample 2, respectively. Wherein the parameters measured by the sample 1 are water wetting contact angle 39.3 degrees, oil wetting contact angle 87.4 degrees, water absorption 0.0952g obtained by spontaneous imbibition, oil absorption 0.0112g obtained by spontaneous imbibition, water absorption 0.0835g obtained by nuclear magnetic resonance and oil absorption 0.0157g obtained by nuclear magnetic resonance; the parameters measured by the sample 2 are 25.8 degrees of water wetting contact angle, 99.7 degrees of oil wetting contact angle, 0.1003g of water absorption obtained by spontaneous imbibition, 0.0111g of oil absorption obtained by spontaneous imbibition, 0.0997g of water absorption obtained by nuclear magnetic resonance and 0.0092g of oil absorption obtained by nuclear magnetic resonance.
The results calculated using the method described above for sample 1 were CAI 0.534, SIW 0.00502, NMRIW0.00329, overall index a is 0.12, expansion index b is 0.59, and loss index c is 0.47. Accordingly, the integrated wettability parameter IW corresponding to sample 1 is 0.06408.
The calculation gave a CAI 0.821, SIW 0.00510, NMRI for sample 2W0.00628, overall index a 0.11, expansion index b 0.53, loss index c 0.39. Accordingly, the integrated wettability parameter IW corresponding to sample 2 is 0.09266.
Therefore, both the sample 1 and the sample 2 have partial water wettability, and the water wettability of the sample 2 is stronger than that of the sample 1, which is consistent with the actual situation, thereby proving the accuracy of the method.
Based on the above embodiment and the introduction of the scenario example, it can be seen that when the wettability of the shale reservoir is evaluated, the method firstly obtains a shot image corresponding to a sample to be tested, determines a contact angle between a target fluid and the shale reservoir based on the shot image, and further determines a corresponding contact angle wettability parameter according to the contact angle; then, the spontaneous imbibition quality of the shale reservoir for imbibing the target fluid through the spontaneous imbibition phenomenon can be measured, and then the spontaneous imbibition wettability parameter corresponding to the shale reservoir is determined through the spontaneous imbibition phenomenon; and then, acquiring a corresponding nuclear magnetic resonance spectrum by performing nuclear magnetic resonance on the sample to be detected, further analyzing the nuclear magnetic resonance spectrum to determine the nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid, and calculating the nuclear magnetic wettability parameter of the sample to be detected according to the nuclear magnetic resonance quality. After the corresponding parameters are determined through the three modes, the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter can be integrated to evaluate the wettability of the shale reservoir. The method realizes the evaluation of the wettability of the shale reservoir by integrating different testing methods, further overcomes the defects of different evaluation methods, and realizes the comprehensive and accurate evaluation of the wettability of the shale reservoir.
Based on the shale reservoir wettability evaluation method, the specification further provides an embodiment of a shale reservoir wettability evaluation device. As shown in fig. 4, the shale reservoir wettability evaluation apparatus specifically includes the following modules.
A photographed image obtaining module 410 for obtaining a photographed image corresponding to a sample to be measured; the sample to be tested comprises a shale reservoir and a target fluid on the surface of the shale reservoir; the captured image is used for displaying a contact angle between the shale reservoir and the target fluid;
a contact angle wettability parameter calculation module 420, configured to calculate a contact angle wettability parameter of the sample to be measured by using the contact angle;
a spontaneous imbibition mass measurement module 430, configured to measure a spontaneous imbibition mass of the shale reservoir into the target fluid;
a spontaneous imbibition wettability parameter determination module 440, configured to determine a spontaneous imbibition wettability parameter of the sample to be tested according to the spontaneous imbibition quality;
the nuclear magnetic resonance spectrum acquisition module 450 is configured to acquire a nuclear magnetic resonance spectrum corresponding to the sample to be tested to determine a nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid;
a nuclear magnetic wettability parameter calculating module 460, configured to calculate a nuclear magnetic wettability parameter of the sample to be detected according to the nuclear magnetic resonance quality;
and the wettability evaluation module 470 is used for evaluating the wettability of the shale reservoir layer by integrating the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter.
While the process flows described above include operations that occur in a particular order, it should be appreciated that the processes may include more or less operations that are performed sequentially or in parallel (e.g., using parallel processors or a multi-threaded environment).
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the specification.
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 present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. The shale reservoir wettability evaluation method is characterized by comprising the following steps:
acquiring a shot image corresponding to a sample to be detected; the sample to be tested comprises a shale reservoir and a target fluid on the surface of the shale reservoir; the captured image is used for displaying a contact angle between the shale reservoir and the target fluid;
calculating a contact angle wettability parameter of the sample to be measured by using the contact angle;
measuring the spontaneous imbibition mass of the shale reservoir into the target fluid;
determining the spontaneous imbibition wettability parameter of the sample to be tested according to the spontaneous imbibition quality;
acquiring a nuclear magnetic resonance spectrum corresponding to the sample to be detected to determine the nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid;
obtaining the nuclear magnetic wettability parameter of the sample to be detected through the nuclear magnetic resonance quality;
evaluating the wettability of the shale reservoir stratum by integrating the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter; wherein, include: using the formula IW ═ N RI (SIW + NMRI)W) Calculating the comprehensive wettability parameter by multiplying b by c and CAI by a, wherein IW is the comprehensive wettability parameter, SIW is the spontaneous imbibition wettability parameter, and NMRIWIs a nuclear magnetism wettability parameter, b is an expansion index, c is a loss index, CAI is a contact angle wettability parameter, and a is an integral correction index; and evaluating the wettability of the shale reservoir by utilizing the comprehensive wettability parameter.
2. The method of claim 1, wherein the target fluid comprises water and/or oil.
3. The method of claim 2, wherein the contact angles comprise water contact angles and oil contact angles; the method for calculating the wettability parameter of the contact angle of the sample to be measured by using the contact angle comprises the following steps:
using formulas
Calculating a contact angle wettability parameter, wherein CAI is the contact angle wettability parameter, θwIs the wetting angle of water, thetaoThe angle is oil-wet.
4. The method of claim 2, wherein the spontaneous imbibition mass comprises a spontaneous imbibition mass and a spontaneous imbibition mass; determining the spontaneous imbibition wettability parameter of the sample to be detected according to the spontaneous imbibition quality, comprising the following steps:
using formulas
Calculating the spontaneous imbibition wettability parameter, wherein SIW is the spontaneous imbibition wettability parameter, SIwFor spontaneous imbibition of water-absorbing mass, SIoFor spontaneous imbibition of oil absorption mass, j is such that SIw×10jAnd SIo×10jIs the minimum value of an integer.
5. The method of claim 2, wherein the nmr mass comprises an nmr water uptake and an nmr oil absorption; the obtaining of the nuclear magnetic wettability parameter of the sample to be detected through the nuclear magnetic resonance mass comprises the following steps:
using formulas
Calculating the Nuclear magnetic wettability parameter, in which NMRIWFor nuclear magnetic wettability parameters, NMRwWater absorption for nuclear magnetic resonance, NMRoIs nuclear magnetic resonance oil absorption, j is such that NMR isw×10jAnd NMRo×10jIs the minimum value of an integer.
6. The method of claim 1, wherein after determining the contact angle wettability parameter of the sample to be tested based on the contact angle, further comprising:
using formulas
Calculating an overall correction index, wherein a is the overall correction index, SdIs the projected area of the target fluid in the captured image, SsThe projected area of the shale reservoir in the shot image is obtained; the global correction index is used to attenuate the contact angle wettability parameterThe error generated by the whole body is replaced by the middle part of the area;
after determining the spontaneous imbibition wettability parameter of the sample to be detected according to the spontaneous imbibition quality, the method further comprises the following steps:
using formulas
Calculating the swelling index, wherein b is the swelling index, k is the clay mineral percentage, and mwIs the shale reservoir water absorption mass, j is the smallest integer such that b is the pure decimal number; the expansion index is used for weakening errors caused by the water absorption expansion of the clay to a calculation result;
after the nuclear magnetic wettability parameter of the sample to be detected is obtained through the nuclear magnetic resonance mass, the method further comprises the following steps:
using formulas
Calculating a loss index, wherein c is the loss index, TOC is the total organic carbon content of the sample to be measured, w is the percentage of hydrophilic minerals, phi is the porosity of the shale reservoir, and j is the minimum integer which enables c to be a pure decimal number; the loss index is used for weakening the error caused by the fact that lipophilic pores wrapped by hydrophilic pores cannot saturate fluid;
correspondingly, the comprehensive evaluation of the wettability of the shale reservoir by the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter comprises the following steps:
using the formula IW ═ N RI (SIW + NMRI)W) Calculating the comprehensive wettability parameter by multiplying b by c and CAI by a, wherein IW is the comprehensive wettability parameter, SIW is the spontaneous imbibition wettability parameter, and NMRIWIs a nuclear magnetism wettability parameter, b is an expansion index, c is a loss index, CAI is a contact angle wettability parameter, and a is an integral correction index;
and evaluating the wettability of the shale reservoir by utilizing the comprehensive wettability parameter.
7. The method of claim 6, wherein said obtaining a captured image corresponding to a sample to be tested comprises:
acquiring shot images corresponding to a sample to be detected at least two shooting angles respectively;
correspondingly, the calculating the contact angle wettability parameter of the sample to be tested by using the contact angle comprises the following steps:
using formulas
Calculating an overall correction index, wherein a is the overall correction index, SdFor the sum of the projected areas of the target fluid in all the captured images, SsThe sum of the projected areas of the shale reservoir in all the taken images.
8. The method of claim 6, wherein the evaluating the wettability of the shale reservoir using the integrated wettability parameter comprises:
determining the shale reservoir to be hydrophilic-wetting, or,
and under the condition that the comprehensive wettability parameter is less than zero, determining that the shale reservoir stratum is oleophilic wettability.
9. The method of claim 6, wherein the evaluating the wettability of the shale reservoir using the integrated wettability parameter comprises:
determining the shale reservoir to be of a substantially non-wetting nature, or,
determining the shale reservoir as weakly wetting in the event that the absolute value of the integrated wettability parameter is not less than a wettability threshold and less than a wetting strength threshold, or,
and determining that the shale reservoir is of a strong wetting property under the condition that the absolute value of the comprehensive wettability parameter is not less than the wetting strength threshold value.
10. The shale reservoir wettability evaluation device is characterized by comprising:
the shot image acquisition module is used for acquiring a shot image corresponding to the sample to be detected; the sample to be tested comprises a shale reservoir and a target fluid on the surface of the shale reservoir; the captured image is used for displaying a contact angle between the shale reservoir and the target fluid;
the contact angle wettability parameter calculation module is used for calculating the contact angle wettability parameter of the sample to be measured by utilizing the contact angle;
the spontaneous imbibition quality measuring module is used for measuring the spontaneous imbibition quality of the shale reservoir layer for imbibing the target fluid;
the spontaneous imbibition wettability parameter determination module is used for determining the spontaneous imbibition wettability parameter of the sample to be detected according to the spontaneous imbibition quality;
the nuclear magnetic resonance spectrum acquisition module is used for acquiring a nuclear magnetic resonance spectrum corresponding to the sample to be detected so as to determine the nuclear magnetic resonance quality of the shale reservoir layer sucked into the target fluid;
the nuclear magnetic wettability parameter calculating module is used for calculating the nuclear magnetic wettability parameter of the sample to be detected through the nuclear magnetic resonance quality;
the wettability evaluation module is used for evaluating the wettability of the shale reservoir stratum by integrating the contact angle wettability parameter, the imbibition wettability parameter and the nuclear magnetic wettability parameter; wherein, include: using the formula IW ═ N RI (SIW + NMRI)W) Calculating the comprehensive wettability parameter by multiplying b by c and CAI by a, wherein IW is the comprehensive wettability parameter, SIW is the spontaneous imbibition wettability parameter, and NMRIWIs a nuclear magnetism wettability parameter, b is an expansion index, c is a loss index, CAI is a contact angle wettability parameter, and a is an integral correction index; and evaluating the wettability of the shale reservoir by utilizing the comprehensive wettability parameter.
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| CN113008926A (en) * | 2021-03-06 | 2021-06-22 | 中国矿业大学(北京) | Spontaneous imbibition fracturing fluid experimental system for tight reservoir rock |
| CN113063702B (en) * | 2021-03-29 | 2022-11-01 | 中国石油大学(华东) | Novel evaluation method suitable for formation silt solid particle surface wettability |
| CN114088585B (en) * | 2021-11-15 | 2022-08-12 | 中国石油大学(北京) | Method, device, equipment and medium for establishing shale wetting angle prediction model |
| CN113820249B (en) * | 2021-11-22 | 2022-03-01 | 中国矿业大学(北京) | Device and method for evaluating wettability of sediment based on imbibition nuclear magnetic resonance |
| CN114235641B (en) * | 2021-12-22 | 2023-10-10 | 常州工学院 | Method for measuring wettability of tight rock by nuclear magnetic resonance |
| CN117433957B (en) * | 2023-10-18 | 2024-05-24 | 中国地质大学（北京） | Shale wettability parameter acquisition method, terminal and storage medium |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1655617A2 (en) * | 2004-10-29 | 2006-05-10 | University of Brunswick | Methods and apparatus for measuring capillary pressure in a sample |
| CN101196460A (en) * | 2007-10-26 | 2008-06-11 | 辽河石油勘探局 | Appraisement method for rock wettability |
| FR3011330A1 (en) * | 2013-09-27 | 2015-04-03 | IFP Energies Nouvelles | METHOD FOR PRESELECTING AN ADDITIVE FOR AN AQUEOUS COMPOSITION USING A NUCLEAR MAGNETIC RESONANCE TECHNIQUE |
| CA2948362A1 (en) * | 2014-05-07 | 2015-11-12 | Ingrain, Inc. | Method and system for spatially resolved wettability determination |
| WO2016210151A1 (en) * | 2015-06-24 | 2016-12-29 | Conocophillips Company | Rock wettability determinations |
| CN108469406A (en) * | 2018-02-07 | 2018-08-31 | 中国石油天然气股份有限公司 | A kind of method and device of determining rock core imbibition non dimensional time model |
| US10139347B2 (en) * | 2015-09-23 | 2018-11-27 | Halliburton Energy Services, Inc. | Measurement of noble gas adsorption via laser-induced breakdown spectroscopy for wettability determination |
| CN110006939A (en) * | 2019-04-12 | 2019-07-12 | 西安石油大学 | Method of the spontaneous imbibition effect of quantitative assessment to oil displacement efficiency maximum contribution degree |
| CN110132796A (en) * | 2019-05-22 | 2019-08-16 | 中国石油大学(北京) | Shale Three-Dimensional contact angle and wetting heterogeneity evaluation system |
| CN111175169A (en) * | 2019-12-31 | 2020-05-19 | 中国地质大学（北京） | Rock wettability evaluation method |
| CN111323834A (en) * | 2020-04-23 | 2020-06-23 | 中国地质大学（北京） | Imbibition device for carrying out spontaneous imbibition on-line monitoring by combining nuclear magnetic resonance technology |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8224629B2 (en) * | 2007-09-10 | 2012-07-17 | Green Imaging Technologies, Inc. | Method of modelling a saturation dependant property in a sample |
| US10137393B2 (en) * | 2015-05-18 | 2018-11-27 | Saeed Golshokooh | Methods for fabricating porous media with controllable characteristics |
| US10197489B2 (en) * | 2015-07-28 | 2019-02-05 | Chevron U.S.A. Inc. | Processes and systems for characterizing and optimizing fracturing fluids |
| US20170267909A1 (en) * | 2016-03-17 | 2017-09-21 | Baker Hughes Incorporated | Methods and Materials for Improving Wellbore Stability in Laminated Tight Carbonate Source-Rock Formations |
-
2020
- 2020-10-29 CN CN202011176488.5A patent/CN112378818B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1655617A2 (en) * | 2004-10-29 | 2006-05-10 | University of Brunswick | Methods and apparatus for measuring capillary pressure in a sample |
| CN101196460A (en) * | 2007-10-26 | 2008-06-11 | 辽河石油勘探局 | Appraisement method for rock wettability |
| FR3011330A1 (en) * | 2013-09-27 | 2015-04-03 | IFP Energies Nouvelles | METHOD FOR PRESELECTING AN ADDITIVE FOR AN AQUEOUS COMPOSITION USING A NUCLEAR MAGNETIC RESONANCE TECHNIQUE |
| CA2948362A1 (en) * | 2014-05-07 | 2015-11-12 | Ingrain, Inc. | Method and system for spatially resolved wettability determination |
| WO2016210151A1 (en) * | 2015-06-24 | 2016-12-29 | Conocophillips Company | Rock wettability determinations |
| US10139347B2 (en) * | 2015-09-23 | 2018-11-27 | Halliburton Energy Services, Inc. | Measurement of noble gas adsorption via laser-induced breakdown spectroscopy for wettability determination |
| CN108469406A (en) * | 2018-02-07 | 2018-08-31 | 中国石油天然气股份有限公司 | A kind of method and device of determining rock core imbibition non dimensional time model |
| CN110006939A (en) * | 2019-04-12 | 2019-07-12 | 西安石油大学 | Method of the spontaneous imbibition effect of quantitative assessment to oil displacement efficiency maximum contribution degree |
| CN110132796A (en) * | 2019-05-22 | 2019-08-16 | 中国石油大学(北京) | Shale Three-Dimensional contact angle and wetting heterogeneity evaluation system |
| CN111175169A (en) * | 2019-12-31 | 2020-05-19 | 中国地质大学（北京） | Rock wettability evaluation method |
| CN111323834A (en) * | 2020-04-23 | 2020-06-23 | 中国地质大学（北京） | Imbibition device for carrying out spontaneous imbibition on-line monitoring by combining nuclear magnetic resonance technology |
Non-Patent Citations (2)
| Title |
|---|
| A review of shale wettability characterization using spontaneous imbibition;Zhiye Gao等;《Marine and Petroleum Geology》;20190619;第109卷;全文 * |
| The wettability of shale by NMR measurements and its controlling factors;Siyuan Su等;《Journal of Petroleum Science and Engineering》;20180526;第169卷;全文 * |
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