Calibration method for formation dip tool, method and system for determining formation dip

Abstract

The present disclosure relates to a formation dipmeter calibration method, a formation dip determination method and a computer program, the method comprising: taking the resistivity of each preset solution with different concentrations as a reference resistivity; performing quantitative analysis and calibration processing on the formation dipmeter by each preset solution, so that the difference between the measured resistivity of each preset solution detected by the formation dipmeter and the reference resistivity of each preset solution is less than a preset threshold, thereby ensuring the consistency and stability of the signal amplitude of the formation dipmeter during detection; and adjusting the signal gain of the formation dipmeter by adjusting the resistance value of the potentiometer according to the measured resistivity of each preset solution detected by the formation dipmeter, so that the amplitude of the measured resistivity detected is maintained within a preset range. Not only does it improve the accuracy and efficiency of formation dip measurement, but also provides a more reliable and economical measurement tool for the field of geological exploration, with high practical application value and broad market prospects.

Description

Technical Field

[0001] This disclosure relates to the field of geological exploration technology, and in particular to a method for calibrating a stratigraphic dipmeter, a method for determining stratigraphic dip angle, a system for determining stratigraphic dip angle, and a computer program. Background Technology

[0002] In the field of geophysical exploration, well logging technology plays a crucial role, providing geologists with direct insights into subsurface structures by measuring the physical properties of underground rock layers. The six-arm formation dip instrument, as a high-end device in modern well logging technology, is designed to improve the accuracy of formation dip measurements through multi-point measurements, thereby more accurately reflecting the structural characteristics of underground rock layers.

[0003] However, this instrument frequently encounters signal amplitude anomalies in practical applications, which not only affects the efficiency of logging operations but also poses a challenge to the accuracy and reliability of the data. Signal amplitude anomalies mainly manifest as excessively low signal strength or signal limiting, which is usually related to improper initial settings of the six legs of the six-arm formation dip instrument. Non-uniformity of the initial state value causes fluctuations in signal amplitude during measurement, thus affecting signal recognition and analysis. When the initial state value is too low, the signal amplitude may fall below the instrument's output threshold, leading to signal loss; conversely, when the initial state value is too high, it may exceed the instrument's dynamic range, causing signal limiting and thus failing to accurately reflect the true resistivity characteristics of the underground rock layer.

[0004] Under current technology, traditional methods for measuring stratigraphic dip, such as scraping with a wire, rely on the operator's experience and subjective judgment, which has significant limitations. First, because the measurement results are affected by the operator's skill and experience, their repeatability and consistency are poor. Second, traditional methods cannot provide quantitative resistivity data, which limits in-depth analysis of the characteristics of underground rock layers. In addition, due to the lack of precise quantitative analysis, the measurement accuracy and data correlation usually cannot meet the requirements of high-precision geological exploration. Summary of the Invention

[0005] This disclosure provides a method for calibrating a formation dipmeter, a method for determining formation dip angle, and a computer program. To address the deficiencies mentioned above, the method provided utilizes the adjustable resistance characteristic of a potentiometer. By precisely adjusting the resistance value, the initial state of the six-arm formation dipmeter is calibrated to ensure the consistency and stability of the signal amplitude during measurement. This approach significantly improves the accuracy and correlation of measurement data, thereby enhancing the overall quality of well logging operations.

[0006] In a first aspect, this disclosure provides a method for calibrating a formation inclination meter, wherein the formation inclination meter is equipped with a potentiometer that supports adjusting the resistance value, and the method includes:

[0007] The resistivity of each preset solution with different concentrations is used as the reference resistivity; wherein, the preset solution is used to simulate the mud environment in the well logging process;

[0008] The formation inclination meter is quantitatively analyzed and calibrated using various preset solutions to ensure that the difference between the measured resistivity of each preset solution detected by the formation inclination meter and the reference resistivity of each preset solution is less than a preset threshold.

[0009] Based on the measured resistivity of each preset solution detected by the formation inclination meter, the signal gain of the formation inclination meter is adjusted by adjusting the resistance value of the potentiometer, so that the amplitude of the measured resistivity detected by the formation inclination meter is maintained within a preset range.

[0010] In some embodiments, the preset solution includes:

[0011] Potassium chloride solution.

[0012] In some embodiments, the potassium chloride solution is prepared at a preset temperature.

[0013] In some embodiments, the concentration of the potassium chloride solution is from 0.01 mol / L to 1 mol / L.

[0014] In some embodiments, the preset temperature is 24°C to 26°C.

[0015] Secondly, this disclosure provides a method for determining the dip angle of a formation, including:

[0016] Acquire the resistivity data of the formation collected by the formation inclinometer; wherein the formation inclinometer is calibrated according to the formation inclinometer calibration method described above;

[0017] Based on the resistivity data, the formation dip angle is determined using a preset dip angle determination method.

[0018] Thirdly, this disclosure provides a system for determining the dip angle of a formation, including:

[0019] A resistivity sensor, which communicates with the control device, is used to collect the resistivity of a preset solution;

[0020] A formation tilt meter, which is communicatively connected to the control device, is used to collect formation resistivity data;

[0021] The control device is used to control the formation inclination meter to be calibrated according to the formation inclination meter calibration method described above, based on the resistivity of the preset solution; and to control the formation inclination meter to collect formation resistivity data, and to determine the formation dip angle based on the resistivity data using a preset dip angle determination method.

[0022] In some embodiments, it also includes:

[0023] A communication device, which is communicatively connected to the processor, is used to receive formation dip angle detection commands and / or feedback formation dip angle data;

[0024] The display device is communicatively connected to the processor and is used to display the formation dip angle data.

[0025] In some embodiments, the control device is further configured to, in response to receiving the formation dip angle detection command, control the formation inclinometer to collect formation resistivity data, and determine the formation dip angle based on the resistivity data using the preset dip angle determination method.

[0026] In some embodiments, the control device is further configured to, in response to receiving the formation dip angle detection command, control the formation inclinometer to collect formation resistivity data, and determine the formation dip angle based on the resistivity data using the preset dip angle determination method.

[0027] Fourthly, this disclosure provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the methods described in the above aspects.

[0028] This disclosure provides a method for calibrating a formation dipmeter, a method for determining formation dip angle, and a computer program, which have the following beneficial effects:

[0029] Improved measurement accuracy: By quantitatively analyzing resistivity and dynamically adjusting signal gain, the measurement accuracy of the six-arm formation dip instrument was significantly improved, ensuring accurate capture of subsurface structural features. Enhanced data correlation: By establishing a standardized resistivity reference database and applying advanced data processing methods, the consistency and correlation of measurement data were enhanced, providing more reliable data support for geological analysis. Resolved signal amplitude anomaly issues: Adaptive signal gain adjustment technology effectively solved the problems of excessively small signal and signal amplitude limiting, ensuring the stability and reliability of measurement signals. Improved operational efficiency: Through an adaptive measurement process, the complexity of well logging operations was simplified and operational efficiency was improved while providing a user-friendly interface. Optimized measurement parameters: By real-time monitoring and dynamic adjustment of measurement parameters, the system can adapt to different subsurface geological conditions, improving the adaptability and accuracy of measurements. Achieved end-to-end workflow: The entire workflow from environmental simulation, resistivity measurement, signal processing to data analysis was integrated, achieving adaptive well logging operations and reducing human error. Enhanced stability and reliability: Stability and reliability were ensured under different geological conditions.

[0030] In summary, the technical solution provided in this disclosure not only improves the accuracy and efficiency of stratigraphic dip measurement, but also provides a more reliable and economical measurement tool for the field of geological exploration, which has high practical application value and broad market prospects. Attached Figure Description

[0031] The present disclosure will be described in more detail below based on embodiments and with reference to the accompanying drawings:

[0032] Figure 1 A schematic flowchart illustrating a formation tiltmeter calibration method provided in this embodiment of the disclosure;

[0033] Figure 2 A schematic flowchart illustrating a method for determining the dip angle of a formation provided in this embodiment of the disclosure;

[0034] Figure 3 This is a schematic diagram of a formation dip angle determination system provided in an embodiment of the present disclosure.

[0035] In the accompanying drawings, the same parts are referred to by the same reference numerals, and the drawings are not drawn to scale. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions of this disclosure, and to fully understand and implement the process of how this disclosure applies technical means to solve technical problems and achieve corresponding technical effects, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. The embodiments of this disclosure and the various features within them can be combined with each other without conflict, and the resulting technical solutions are all within the protection scope of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this disclosure.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this disclosure 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 this disclosure 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 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.

[0038] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0039] This disclosure discloses a quantitative analysis method based on the standard resistivity of potassium chloride solution at a preset temperature for calibrating a stratigraphic dipole instrument. Potassium chloride solution, a commonly used electrolyte solution in geological exploration, exhibits resistivity characteristics somewhat similar to those of underground rock formations. By establishing a database of reference resistivity for potassium chloride solutions of different concentrations, accurate references can be provided for the resistivity data measured by the instrument. In actual measurements, comparing the measured resistivity data with the standard database effectively evaluates and calibrates the measurement accuracy of the six-arm stratigraphic dipole instrument.

[0040] By introducing quantitative resistivity analysis and potentiometer calibration, this disclosure effectively solves the signal amplitude anomaly problem in the practical application of six-arm stratigraphic dip instruments. This method not only improves measurement accuracy and data correlation but also offers advantages such as ease of operation and reliable results. It is expected to be widely applied in the field of geological exploration and provide new technical means for the precise analysis of underground structures.

[0041] Example 1

[0042] This embodiment provides a method for calibrating a formation dipmeter. Specifically, the formation dipmeter includes a six-arm formation dipmeter, meaning that this disclosure can be used to calibrate a six-arm formation dipmeter.

[0043] It should be noted that the formation tilt gauge described in this disclosure is equipped with a potentiometer that supports adjustable resistance values ​​to replace the original fixed resistor. Specifically, the potentiometer can be a high-temperature resistant potentiometer to adapt to the complex environment during well logging.

[0044] Figure 1 This is a schematic flowchart illustrating a formation tiltmeter calibration method provided in an embodiment of this disclosure. Figure 1 As shown, the formation dipmeter calibration method provided in this embodiment includes the following steps:

[0045] Step 110: Use the resistivity of each preset solution with different concentrations as the reference resistivity; wherein the preset solution is used to simulate the mud environment in the well logging process.

[0046] In some embodiments, the preset solution includes:

[0047] Potassium chloride solution.

[0048] In some embodiments, the concentration of the potassium chloride solution is from 0.01 mol / L to 1 mol / L.

[0049] Preferably, the preset solutions with different concentrations include: 0.01 mol / L potassium chloride solution, 0.1 mol / L potassium chloride solution and 1 mol / L potassium chloride solution.

[0050] In some embodiments, the potassium chloride solution is prepared at a preset temperature.

[0051] In some embodiments, the preset temperature is 24°C to 26°C.

[0052] Preferably, the preset temperature includes 25°C; wherein, the resistivity of the 1 mol / L potassium chloride solution at 25°C is 0.11180 c / mol·L. -1 The resistivity of the 0.1 mol / L potassium chloride solution at 25°C is 0.01288 c / mol·L. -1 The resistivity of the 0.01 mol / L potassium chloride solution at 25°C is 0.002765 c / mol·L. -1 .

[0053] Optionally, the reference resistivity of each potassium chloride solution can be saved to a reference resistivity database.

[0054] In well logging, using potassium chloride (KCl) solution as drilling mud can simulate the actual drilling environment. KCl drilling mud protects the wellbore, but it also affects energy dispersive spectroscopy (EDS) logging. By establishing a quantitative relationship between the resistivity of KCl drilling mud and thorium, uranium, and potassium, the impact of KCl drilling mud on EDS logging can be analyzed, and correction relationships can be established to reduce adverse effects and improve the accuracy of logging data.

[0055] For example, firstly, a downhole environment simulation system is designed to simulate the mud environment during actual logging processes.

[0056] Optionally, based on the standard resistivity of potassium chloride solution at 25°C (wherein, the standard resistivity of 1 mol / L potassium chloride solution is 0.11180 c / mol·L), -1 The standard resistivity of a 0.1 mol / L potassium chloride solution is 0.01288 c / mol·L. -1 The standard resistivity of a 0.01 mol / L potassium chloride solution is 0.002765 c / mol·L. -1 Prepare three different concentrations of potassium chloride solution (e.g., 1 mol / L, 0.1 mol / L and 0.01 mol / L).

[0057] Then, the resistivity of these solutions is measured using a precision resistivity measuring device (which can be a mud resistivity tester; since the standard resistivity of the prepared potassium chloride solution is known, the mud resistivity tester is used for measurement and verification). This ensures the accuracy and repeatability of the measurement results.

[0058] Finally, the measurement results are entered into a database for storage, thereby establishing a standardized resistivity reference database. This database can be used for subsequent measurement accuracy evaluation, providing an accurate reference standard for the assessment of measurement accuracy.

[0059] Step 120: Perform quantitative analysis and calibration on the formation inclination meter using each preset solution, so that the difference between the measured resistivity of each preset solution detected by the formation inclination meter and the reference resistivity of each preset solution is less than a preset threshold, thereby ensuring the consistency and stability of the signal amplitude of the formation inclination meter during the detection process.

[0060] Optionally, the preset threshold can be 0, or it can be set to other smaller numbers (such as 0.00001, etc.). The specific preset threshold can be set according to the actual accuracy requirements.

[0061] For example, quantitative analysis and instrument calibration for electrode logging can be performed by analyzing the prepared solution based on the established baseline resistivity database, thereby calibrating the instrument. Quantitative analysis may include adjusting the magnification of each arm using potentiometers until all six arms of the six-arm formation dip instrument can detect the data well.

[0062] Among them, a comprehensive quantitative analysis of the six-arm stratum dip instrument was conducted, including electrode configuration and signal amplification mechanism configuration.

[0063] As an example, the operation of quantitative analysis and calibration of a six-arm dip instrument may include:

[0064] A comprehensive quantitative analysis of the six-arm dip instrument was conducted, including electrode configuration and signal amplification mechanism. A fixed software gain was implemented to ensure gain consistency throughout the measurement process. Utilizing the adjustable resistance of a high-temperature potentiometer, the originally fixed amplification factor was changed to an adjustable one, enabling dynamic adjustment of the instrument's signal gain. The calibration process ensured the uniformity of the initial state of the six arms, enhancing the instrument's signal gain adaptability.

[0065] Initially, the initial states of the six arms differ too much, resulting in signals that are too weak to be detected and signals that are too strong to be displayed due to amplitude limiting. This leads to poor quality logging curves. Uniformity means adjusting the initial states of the six arms to a range where all six arms can perform well.

[0066] Quantitative analysis of resistivity improves the level of quantitative measurement and realizes the transformation from qualitative to quantitative analysis, which is the key to improving measurement accuracy and data correlation.

[0067] Step 130: Based on the measured resistivity of each preset solution detected by the inclination meter, adjust the signal gain of the inclination meter by adjusting the resistance value of the potentiometer, so that the amplitude of the measured resistivity detected by the inclination meter is maintained within a preset range, thereby ensuring that the signal of the inclination meter is not too small or limited during the detection process.

[0068] The software gain can be fixed initially, and then, in a self-configured environment, the adjustable resistance of a high-temperature potentiometer can be used to change the original fixed 5x amplification factor to an adjustable amplification factor. This increases the adaptability of the instrument's signal gain, resolving issues such as excessively small signals and amplitude limiting, thus achieving the desired effect. During logging, the gain is automatic, solving the signal problems of the fixed gain mode. The automatic gain mode has even better adaptability, allowing both excessively small and large signals to be well represented on the logging curve.

[0069] For example, to perform adaptive signal gain adjustment, the solution configured above can be tested based on the reference resistivity database created above, and then the signal gain of the instrument can be adjusted accordingly.

[0070] Optionally, the signal gain can be dynamically adjusted based on real-time measured resistivity data to adapt to different underground geological conditions.

[0071] The preset range can be set so that all detection signals remain within the visible range without the signal being too small or the amplitude being limited. The specific setting can be made according to actual needs.

[0072] Optionally, the signal amplitude can be monitored, and the resistance value of the potentiometer can be adjusted to keep the signal within the optimal measurement range. Utilizing the adjustable resistance of the high-temperature potentiometer, dynamic adjustment of the signal gain of the six-arm dipmeter instrument is achieved, resolving the issues of insufficient signal strength and amplitude limiting.

[0073] As an example, the operation of adaptive signal gain adjustment for a six-arm dip instrument may include: dynamically adjusting the signal gain based on real-time measured resistivity data; and monitoring the signal amplitude in real time and adjusting the resistance value of the potentiometer to keep the signal within the optimal measurement range.

[0074] In summary, the method disclosed in this embodiment can not only effectively improve the measurement accuracy of the six-arm stratigraphic dip instrument and enhance the correlation of data, but also provide a more reliable and efficient measurement tool for the field of geological exploration.

[0075] Example 2

[0076] Based on the above embodiments, this embodiment provides a method for determining the dip angle of a formation.

[0077] Figure 2 This is a schematic flowchart illustrating a formation tiltmeter calibration method provided in an embodiment of this disclosure. Figure 2 As shown, the method for determining the dip angle of a formation disclosed in this embodiment includes the following steps:

[0078] Step 210: Obtain the resistivity data of the formation collected by the formation inclinometer; wherein the formation inclinometer is calibrated according to the formation inclinometer calibration method described above.

[0079] In actual well logging operations, the resistivity of the formation is measured in real time, and relevant data is collected.

[0080] The collected resistivity data were analyzed and processed to calculate the formation dip angle. The calculation results were then compared with those obtained from other measurement methods to verify the accuracy of this method.

[0081] Step 220: Determine the formation dip angle using a preset dip angle determination method based on the resistivity data.

[0082] Specifically, the six-arm formation dip measuring instrument is based on resistivity measurement and incorporates shielded electrodes. Under the action of the shielded electrodes, the current flowing from the main electrode flows back through deeper formations, reducing the influence of the wellbore, flushing zone, and invasion zone on the measurement results. The preset dip angle determination method can be a constant pressure measurement method. That is, the six-arm formation dip measuring instrument adopts a constant pressure measurement method. The electronic circuit provides a driving signal with a known frequency and potential to the shielded electrode. The main electrode is controlled by the circuit to keep the potential consistent with the shielded electrode at all times. By measuring the current flowing out of the main electrode, the apparent resistivity of the formation is finally calculated. The six plates simultaneously measure the conductivity curves in three different directions around the well. By combining at least three conductivity curves around the well and correcting with well inclination data, the dip angle of each formation can be determined. Then, by combining the relative azimuth of the first plate, the dip of the formation can be obtained.

[0083] Specifically, the dip angle of the strata can be determined using the following formula:

[0084]

[0085] Where θ is the dip angle of the strata, R r R is the resistivity measurement perpendicular to the formation. θ R represents the resistivity measurement along the formation. Φ This represents the true resistivity of the formation.

[0086] Furthermore, dip calculations typically involve measurement data from multiple detectors. By comparing the differences between different detectors, the dip of the formation can be determined. The specific calculation method may vary depending on the logging instruments and data processing software used.

[0087] Alternatively, methods for determining the dip angle and dip direction of strata include:

[0088]

[0089]

[0090] Among them, R max R is the maximum resistivity value. min R is the minimum resistivity value. av α is the average resistivity value, α is the dip direction of the formation, and θ is the dip angle of the formation.

[0091] Furthermore, the results of different measurement methods can be compared and analyzed to evaluate the accuracy and reliability of the method of the present invention. Based on the verification results, the measurement parameters and data processing can be optimized to further improve the measurement accuracy and data quality.

[0092] Furthermore, feedback from actual geological exploration sites can be collected, and targeted adjustments can be made based on the feedback to ensure stability and reliability under different geological conditions.

[0093] Example 3

[0094] Based on the above embodiments, this embodiment provides a system for determining the dip angle of a formation.

[0095] like Figure 3 As shown, the system includes:

[0096] A resistivity sensor, which communicates with the control device, is used to collect the resistivity of a preset solution;

[0097] A formation tilt meter, which is communicatively connected to the control device, is used to collect formation resistivity data;

[0098] The control device is used to control the formation inclination meter to be calibrated according to the formation inclination meter calibration method described above, based on the resistivity of the preset solution; and to control the formation inclination meter to collect formation resistivity data, and to determine the formation dip angle based on the resistivity data using a preset dip angle determination method.

[0099] Optionally, the control device can issue a calibration reminder message based on the resistivity of the preset solution, so that the operator can calibrate the formation inclination meter according to the calibration reminder message and the formation inclination meter calibration method described above. The reminder message may include information about the concentration and temperature of the potassium chloride solution, as well as the resistivity data corresponding to that temperature.

[0100] In some embodiments, it also includes:

[0101] A communication device, which is communicatively connected to the processor, is used to receive formation dip angle detection commands and / or feedback formation dip angle data;

[0102] The display device is communicatively connected to the processor and is used to display the formation dip angle data.

[0103] In some embodiments, the control device is further configured to, in response to receiving the formation dip angle detection command, control the formation dip meter to collect formation resistivity data, and determine the formation dip angle based on the resistivity data using the preset dip angle determination model.

[0104] Optionally, the formation dip angle detection command can come from a host computer that communicates with the system via a communication module. Therefore, this system can control a six-arm formation dip angle instrument to measure the resistivity of the formation in real time or at preset time intervals, determine the formation dip angle, and collect relevant data.

[0105] The preset time interval can be set to 0.5 seconds, 1 second, or 1 minute, etc., and can be set according to actual needs.

[0106] Based on the above embodiments, this system can realize the entire process from environmental simulation, resistivity measurement, signal processing to data analysis.

[0107] Furthermore, a corresponding user interface can be set up in the display device so that geological exploration personnel can easily set up relevant measurement data, view data, and perform result analysis.

[0108] Example 4

[0109] Based on the above embodiments, this embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method described in the above embodiments.

[0110] In some embodiments of this example, a computer-readable storage medium is provided, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the steps of the method described in the above embodiments.

[0111] In some embodiments of this example, a computer program product is provided, including a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the method described in the above embodiments.

[0112] The processor may include, but is not limited to, one or more processors or microprocessors. Each processor may be implemented as an Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor, or other electronic component, for executing the methods in the above embodiments.

[0113] Computer-readable storage media can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Computer-readable storage media may include, but are not limited to, random access memory (RAM), read-only memory (ROM), flash memory, EPROM memory, EEPROM memory, registers, and computer storage media (e.g., hard disks, floppy disks, solid-state drives, removable disks, CD-ROMs, DVD-ROMs, Blu-ray discs, etc.).

[0114] Computer-readable storage media may also store at least one computer-executable program / instruction, such as computer-readable instructions. Computer-readable storage media include, but are not limited to, volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Computer-readable storage media may include, for example, read-only memory (ROM), hard disk, flash memory, etc. For example, a non-transitory computer-readable storage medium may be connected to a computing device such as a computer, and then, when the computing device executes the computer-readable instructions stored on the computer-readable storage medium, the various methods described above can be performed.

[0115] In addition, the computer device may include (but is not limited to) a data bus, an input / output (I / O) bus, a display, and input / output devices (e.g., keyboard, mouse, speakers, etc.).

[0116] The processor can communicate with external devices via the I / O bus through wired or wireless networks.

[0117] In one embodiment, the at least one computer-executable instruction may also be compiled into or comprise a software product / computer program product, wherein one or more computer-executable instructions are executed by a processor to perform the steps of the various functions and / or methods in the embodiments described herein.

[0118] In the embodiments provided in this disclosure, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0119] It should be noted that, in this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element limited by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0120] While the embodiments disclosed herein are as described above, the foregoing content is merely for the purpose of facilitating understanding of this disclosure and is not intended to limit this disclosure. Any person skilled in the art to which this disclosure pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope of this disclosure; however, the scope of patent protection of this disclosure shall still be determined by the scope defined in the appended claims.

Claims

1. A method for calibrating a formation dipmeter, characterized in that, The formation dip gauge is equipped with a potentiometer that supports adjusting the resistance value, and the method includes: The resistivity of each preset solution with different concentrations is used as the reference resistivity; wherein, the preset solution is used to simulate the mud environment in the well logging process; The formation inclination meter is quantitatively analyzed and calibrated using various preset solutions to ensure that the difference between the measured resistivity of each preset solution detected by the formation inclination meter and the reference resistivity of each preset solution is less than a preset threshold. Based on the measured resistivity of each preset solution detected by the formation inclination meter, the signal gain of the formation inclination meter is adjusted by adjusting the resistance value of the potentiometer, so that the amplitude of the measured resistivity detected by the formation inclination meter is maintained within a preset range.

2. The method according to claim 1, characterized in that, The preset solution includes: Potassium chloride solution.

3. The method according to claim 2, characterized in that, The concentration of the potassium chloride solution is from 0.01 mol / L to 1 mol / L.

4. The method according to claim 2, characterized in that, The potassium chloride solution is prepared at a preset temperature.

5. The method according to claim 4, characterized in that, The preset temperature is 24°C to 26°C.

6. A method for determining the dip angle of a formation, characterized in that, include: Acquire the resistivity data of the formation collected by the formation inclinometer; wherein the formation inclinometer is calibrated according to any one of claims 1 to 5; Based on the resistivity data, the formation dip angle is determined using a preset dip angle determination method.

7. A system for determining the dip angle of a formation, characterized in that, include: A resistivity sensor, which communicates with the control device, is used to collect the resistivity of a preset solution; A formation tilt meter, which is communicatively connected to the control device, is used to collect formation resistivity data; A control device is configured to control the formation inclination meter to be calibrated according to the formation inclination meter calibration method according to any one of claims 1 to 5 based on the resistivity of the preset solution; and to control the formation inclination meter to collect formation resistivity data, and to determine the formation dip angle based on the resistivity data using a preset dip angle determination method.

8. The system according to claim 7, characterized in that, Also includes: A communication device, which is communicatively connected to the processor, is used to receive formation dip angle detection commands and / or feedback formation dip angle data; The display device is communicatively connected to the processor and is used to display the formation dip angle data.

9. The system according to claim 8, characterized in that, The control device is further configured to, in response to receiving the formation dip angle detection command, control the formation dip meter to collect formation resistivity data, and determine the formation dip angle based on the resistivity data using the preset dip angle determination method.

10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the method according to any one of claims 1 to 6.

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