CN116026286A - Near-bit inclination angle calculation method and device, storage medium and terminal - Google Patents
Near-bit inclination angle calculation method and device, storage medium and terminal Download PDFInfo
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Abstract
The invention provides a method and a device for calculating a near-bit inclination angle, a storage medium and a terminal, wherein the method comprises the following steps: acquiring the forward data of the near drill bit, and establishing a correction model according to the forward data; acquiring an initial measurement inclination angle value of the near-bit at the current moment; acquiring related parameter information of the near drill bit at the current moment and the last moment, and calculating an error coefficient of the inclination angle measuring tool according to the related parameter information at the current moment; calculating the current angle change proportion of the near drill bit; and inputting the related parameter information of the current moment and the last moment of the near-bit into the correction model to obtain a primary output result and a secondary output result, and correcting the primary output result, the initial measurement inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle. The invention effectively improves the accuracy of the measurement result of the inclination angle inside the near-bit under the condition of not changing hardware.
Description
Technical Field
The invention belongs to the technical field of drilling, and particularly relates to a near-bit inclination angle calculation method, a near-bit inclination angle calculation device, a storage medium and a terminal.
Background
During drilling, the drill bit is the primary tool for breaking rock, and the well bore is formed by the drill bit breaking rock. The length of time a wellbore is formed is dependent on the degree of mutual match between the drill bit and the formation, in addition to the nature of the formation rock being drilled and the performance of the drill bit itself. The reasonable selection of the drill bit plays an important role in improving the drilling speed and reducing the comprehensive drilling cost. The PDC drill bit is a rock breaking tool widely used in the petroleum and natural gas exploration and development industry at present, effectively improves a mechanical drilling tool and shortens the drilling period.
In the near-bit drilling process, the current inclination angle of the drill bit is required to be measured continuously in order to know the drilling condition, but the accurate inclination angle cannot be obtained due to the fact that the near-bit is in a high-speed motion state in the use process, and the accurate inclination angle cannot be obtained due to the fact that the conventional measuring tool is too large in measured result error, but if the drill bit is stopped for measurement, the construction progress is affected, the risk of collapse of a drilling stratum is also easy to occur, and the construction safety is affected.
Disclosure of Invention
In view of the above drawbacks of the prior art, the present invention is directed to a method, an apparatus, a storage medium and a terminal for calculating a near-bit inclination angle, which are used for solving the problem of inaccurate near-bit inclination angle measurement in the use process in the prior art.
To achieve the above and other related objects, the present invention provides a method for calculating a near-bit inclination angle, comprising:
acquiring the forward data of the near drill bit, and establishing a correction model according to the forward data;
starting an inclination angle measuring tool positioned in the near-bit to obtain an initial measurement inclination angle value of the near-bit at the current moment, wherein a gyroscope is arranged in the inclination angle measuring tool;
sending an ultrasonic signal to a control terminal, acquiring relevant parameter information of the near drill bit at the current moment and the last moment according to a feedback signal of the control terminal, and calculating an error coefficient of the inclination angle measuring tool according to the relevant parameter information at the current moment;
the method comprises the steps that a laser transmitter respectively sends out laser signals at the current moment and the last moment and respectively obtains a first reflection signal and a second reflection signal, and the current angle change proportion of the near drill bit is calculated according to the first reflection signal and the second reflection signal, wherein the interval between the current moment and the last moment is 1-3 s;
And inputting the related parameter information of the current moment and the last moment of the near-bit into the correction model to obtain a primary output result and a secondary output result, and correcting the primary output result, the initial measured inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle.
Optionally, the obtaining the current period data of the near drill bit, and building a correction model according to the current period data, includes:
acquiring related parameter information of different moments in the near-bit forward-period data and historical inclination angle information corresponding to the related parameter information, wherein the related parameter information comprises rotation speed information, vibration frequency information, drilling depth information and pressure information;
establishing an initial neural network model according to the related parameter information and the historical inclination angle information, wherein the initial neural network model comprises a first input neuron, a second input neuron, a third input neuron, a fourth input neuron, a fifth input neuron, a hidden neuron and an output neuron, and the first input neuron, the second input neuron, the third input neuron, the fourth input neuron and the fifth input neuron are subjected to fitting through fitting neurons and then output through an output neuron output model;
Respectively inputting the rotation speed information, the vibration frequency information, the drilling depth information and the pressure information at the same moment into the first input neuron, the second input neuron, the third input neuron and the fourth input neuron correspondingly as training data, and inputting the historical inclination angle information corresponding to the moment into the fifth input neuron as comparison data to compare the output results of the output neurons;
optimizing and adjusting hidden neurons in the initial neural network model according to the difference between the historical inclination angle information and the output result;
and continuously inputting the related parameter information and the historical inclination angle information into the initial neural network model for training until the difference between the output result of the output neuron and the corresponding historical inclination angle information is smaller than a model threshold value, and taking the adjusted initial neural network model as the correction model.
Optionally, the size of the model threshold is positively correlated with the size of the near bit.
Optionally, the sending an ultrasonic signal to the control terminal to obtain relevant parameter information of the near-bit at the current moment, and calculating an error coefficient of the inclination angle measuring tool according to the relevant parameter information includes:
Sending an ultrasonic signal to the control terminal;
the control terminal reads the current moment and rotation speed information of the near-bit, vibration frequency information, drilling depth information and pressure information according to the ultrasonic signals;
transmitting the rotation speed information, the vibration frequency information, the drilling depth information and the pressure information to a receiving end in the near-bit;
and the receiving end calculates an error coefficient of the inclination angle measuring tool under the current condition according to the rotating speed information, the vibration frequency information, the drilling depth information and the pressure information.
Optionally, the error coefficient is positively correlated with the magnitude of the vibration frequency information and the magnitude of the rotation speed, and the error coefficient is negatively correlated with the magnitude of the pressure information and the magnitude of the drilling depth information.
Optionally, the step of sending out a laser signal at the current time and the previous time by the laser transmitter and obtaining a first reflected signal and a second reflected signal respectively, and calculating the current angle change proportion of the near-bit according to the first reflected signal and the second reflected signal includes:
transmitting the same laser signals to the inner wall of the near-bit at the previous moment and the current moment respectively;
Acquiring a photosensitive image of the laser signal when the laser signal is reflected at the last moment and the current moment through a photosensitive camera, wherein the photosensitive image is an image of the laser signal on a reflecting surface;
respectively determining the reflection positions of the laser signals according to the brightness values of the photosensitive images at the previous moment and the current moment, and respectively obtaining the reflection intensities of the first reflection signals and the second reflection signals;
and determining the angle change proportion of the near-bit at the current moment according to the reflection positions and the reflection intensities at the current moment and the last moment.
Optionally, the inputting the related parameter information of the current moment and the previous moment of the near-bit to the correction model to obtain a primary output result and a secondary output result, and correcting the primary output result, the initial measured inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle includes:
obtaining a real-time inclination angle range according to the initial measurement inclination angle value and the error coefficient, and determining whether the primary output result is positioned in the real-time inclination angle range;
After the primary output result is determined to be positioned in the real-time inclination angle range, calculating an angle difference value of the primary output result and the secondary output result in unit time, and judging the ratio of the angle difference value to the angle change;
if the difference value of the angle difference value and the angle change proportion is smaller than or equal to an error threshold value, the primary output result is used as the target inclination angle;
and if the difference value of the angle difference value and the angle change proportion is larger than an error threshold value, calculating to obtain the target inclination angle according to the secondary output result, the angle change proportion and the time difference value, wherein the time difference value is the difference value between the last time and the current time.
The invention also provides a device for calculating the inclination angle of the near-bit, which comprises the following steps:
the modeling module is used for acquiring the forward data of the near drill bit and establishing a correction model according to the forward data;
the initial measurement module is used for starting an inclination angle measurement tool positioned in the near-bit to acquire an initial measurement inclination angle value of the near-bit at the current moment, wherein a gyroscope is arranged in the inclination angle measurement tool;
the error calculation module is used for sending an ultrasonic signal to the control terminal, acquiring the related parameter information of the near-bit at the current moment and the last moment according to the feedback signal of the control terminal, and calculating the error coefficient of the inclination angle measuring tool according to the related parameter information at the current moment;
The proportion calculation module is used for respectively sending out laser signals at the current moment and the last moment through the laser transmitter and respectively obtaining a first reflection signal and a second reflection signal, and calculating the current angle change proportion of the near drill bit according to the first reflection signal and the second reflection signal, wherein the interval between the current moment and the last moment is between 1 and 3 s;
and the correction module is used for inputting the related parameter information of the current moment and the last moment of the near-bit into the correction model to obtain a primary output result and a secondary output result, and correcting the primary output result, the initial measurement inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle.
The present invention provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described near bit inclination calculation method.
The invention provides a terminal, comprising: a processor and a memory; the memory is used for storing a computer program; the processor is used for executing the computer program stored in the memory so that the terminal executes the method for calculating the near-bit inclination angle.
As described above, the method for calculating the near-bit inclination angle, the device storage medium and the terminal provided by the invention have the following beneficial effects:
according to the method, the correction model is built for the forward data of the near-bit so as to carry out comparison correction on the measurement result of the measuring tool according to the correction model, the measurement result of the measuring tool is not dependent on the traditional tool measurement, the result is output in a mode of matching with a neural network model, the accuracy of measuring the internal inclination angle of the near-bit is effectively improved, meanwhile, the related parameter information of the current moment is obtained so as to obtain the error coefficient of the measuring tool at the current moment, the angle change proportion of the near-bit at the current moment is obtained by matching with the laser transmitter in a calculating mode, the primary output result and the secondary output result output by the correction model are conveniently corrected through the error coefficient and the angle change proportion, the accuracy of the measurement result is effectively improved, the measurement process of the internal inclination angle of the near-bit can be realized without stopping the near-bit, the construction period is not only quickened, the rock stratum collapse risk in the drilling is not caused by stopping the near-bit, moreover, the measurement deviation can be effectively reduced through a gyroscope in the measuring process of the measuring tool, and the accuracy of the target inclination angle obtained in the follow-up is improved.
Drawings
Fig. 1 is a flowchart of a method for calculating a near-bit inclination angle according to the present invention.
Fig. 2 is a flowchart of step S104 in the method for calculating the near-bit inclination angle according to the present invention.
Fig. 3 is a flowchart of step S105 in the method for calculating the near-bit inclination angle according to the present invention.
Fig. 4 is a block diagram showing a device for calculating the inclination angle of the near-bit according to the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
According to the near-bit inclination angle calculation method, the near-bit inclination angle calculation device and the near-bit inclination angle calculation terminal, the correction model is built on the forward-phase data of the near-bit so as to carry out comparison correction on the measurement result of the measuring tool according to the correction model, the measurement of the near-bit inclination angle is not dependent on the traditional tool measurement, the measurement result is output in a mode of matching with a neural network model, the accuracy of near-bit inclination angle measurement is effectively improved, meanwhile, the related parameter information at the current moment is obtained so as to obtain the error coefficient of the measuring tool at the current moment, the angle change proportion of the near-bit at the current moment is obtained through calculation by matching with the laser transmitter, the primary output result and the secondary output result output by the correction model are conveniently corrected through the error coefficient and the angle change proportion, the measurement result accuracy of the near-bit inclination angle is effectively improved, the near-bit inclination angle measurement process can be realized without stopping the near-bit under the condition, the construction period is not only shortened, the formation collapse risk can not occur in the drilling interior due to stopping of the near-bit, and the measurement tool measurement process can effectively reduce measurement deviation, and the accuracy of the obtained target gyroscope is improved.
As shown in fig. 1, in an embodiment, a method for calculating a near-bit inclination angle according to the present invention, referring to fig. 1, includes the following steps:
s101, acquiring the forward data of the near drill bit, and establishing a correction model according to the forward data.
In some embodiments, the obtaining the current date of the near bit, and building a correction model according to the current date, includes:
acquiring related parameter information of different moments in the near-bit forward-period data and historical inclination angle information corresponding to the related parameter information, wherein the related parameter information comprises rotation speed information, vibration frequency information, drilling depth information and pressure information;
establishing an initial neural network model according to the related parameter information and the historical inclination angle information, wherein the initial neural network model comprises a first input neuron, a second input neuron, a third input neuron, a fourth input neuron, a fifth input neuron, a hidden neuron and an output neuron, and the first input neuron, the second input neuron, the third input neuron, the fourth input neuron and the fifth input neuron are subjected to fitting through fitting neurons and then output through an output neuron output model;
Respectively inputting the rotation speed information, the vibration frequency information, the drilling depth information and the pressure information at the same moment into the first input neuron, the second input neuron, the third input neuron and the fourth input neuron correspondingly as training data, and inputting the historical inclination angle information corresponding to the moment into the fifth input neuron as comparison data to compare the output results of the output neurons;
optimizing and adjusting hidden neurons in the initial neural network model according to the difference between the historical inclination angle information and the output result;
and continuously inputting the related parameter information and the historical inclination angle information into the initial neural network model for training until the difference between the output result of the output neuron and the corresponding historical inclination angle information is smaller than a model threshold value, and taking the adjusted initial neural network model as the correction model.
Specifically, because there are a plurality of drilling quantities in the same area for the same near-bit, the forward data of the near-bit is used as the basis for establishing the neural network model, wherein the forward data of the near-bit comprises the relevant parameter information at different moments and the historical inclination angle information measured at the moment, and the measurement mode of the historical inclination angle information is measured by adopting the mode in the prior art and is not repeated here.
And then, an initial neural network model, such as a depth Feed-forward neural network model (DFF), is built according to the related parameter information and the historical inclination angle information, and is generally influenced by the depth, the pressure intensity, the near-bit rotating speed and the vibration frequency in the drilling process in the measurement process of the measuring tool, so that the rotating speed information, the vibration frequency information, the drilling depth information and the pressure intensity information in the related parameter information are respectively correspondingly input into the first input neuron, the second input neuron, the third input neuron and the fourth input neuron as training data, and the time and the historical inclination angle information under the parameter condition are input into a fifth input neuron so as to be used as comparison training for comparing the output result of the output neuron in the subsequent process, thereby optimizing the hidden neuron in the training process, and further optimizing the whole initial neural network model to obtain the neural network model which accords with the measurement accuracy.
The method includes the steps of continuously inputting related parameter information and historical inclination information into the initial neural network model, comparing the output result of the output neuron with the historical inclination information of the data and the model threshold value, so as to continuously optimize and adjust the hidden neuron according to the difference between the output result of the output neuron and the historical inclination information of the data and the model threshold value, obtaining the neural network model which is more in line with the near-bit working environment, and taking the initial neural network model after the difference between the output result of the output neuron and the corresponding historical inclination information is smaller than the model threshold value as the correction model.
The correction model adopts a feedforward network composed of a plurality of hidden neurons, and by adding a hidden layer, the overfitting can be reduced, the generalization capability can be improved, and the accuracy of the final output result of the correction model can be improved.
In some embodiments, the magnitude of the model threshold is positively correlated with the size of the near-bit.
It should be noted that, the size of the model threshold may be manually set according to the size of the near-bit, or may be an empirical value, which is not limited in this scheme, and will not be described herein.
S102, starting an inclination angle measuring tool positioned in the near-bit to obtain an initial measurement inclination angle value of the near-bit at the current moment, wherein a gyroscope is arranged in the inclination angle measuring tool.
In this embodiment, the influence of rotation and vibration of the near-bit is reduced by the gyroscope inside the inclination measuring tool, and the accuracy of the initial measurement inclination value measured by the inclination measuring tool is improved. It should be noted that, the inclination measuring tool adopts a scheme in the prior art, and the installation process of the gyroscope and the inclination measuring tool also adopts a conventional mode, so that the scheme does not relate to the improvement of the installation modes of the inclination measuring tool and the gyroscope, and is not repeated here.
S102, sending an ultrasonic signal to a control terminal, acquiring relevant parameter information of the near-bit at the current moment and the last moment according to a feedback signal of the control terminal, and calculating an error coefficient of the inclination angle measuring tool according to the relevant parameter information at the current moment.
In some embodiments, the sending an ultrasonic signal to the control terminal to obtain related parameter information of the near-bit at the current moment, and calculating an error coefficient of the inclination angle measurement tool according to the related parameter information includes:
sending an ultrasonic signal to the control terminal;
the control terminal reads the current moment and rotation speed information of the near-bit, vibration frequency information, drilling depth information and pressure information according to the ultrasonic signals;
transmitting the rotation speed information, the vibration frequency information, the drilling depth information and the pressure information to a receiving end in the near-bit;
and the receiving end calculates an error coefficient of the inclination angle measuring tool under the current condition according to the rotating speed information, the vibration frequency information, the drilling depth information and the pressure information.
In this embodiment, in order to calculate an error coefficient of the whole inclination angle measuring tool under the current condition in the near-bit drilling process, an ultrasonic generator is used to transmit an ultrasonic signal to a control terminal of the near-bit, so as to receive a feedback signal of the control terminal through a receiving end and timely obtain relevant parameter information of the near-bit at the current moment, including rotation speed information, vibration frequency information, drilling depth information and pressure information, and after the rotation speed information, vibration frequency information, drilling depth information and pressure information of the near-bit at the current moment are obtained, the influence of the current environment on the inclination angle measuring tool can be calculated, so that the error coefficient of the inclination angle measuring tool under the current condition is calculated. So as to be convenient for the subsequent calculation of the error range of the inclination angle measuring tool under the current condition and the subsequent comparison and screening of the output result of the correction model.
In some embodiments, the error coefficient is positively correlated with the magnitude of the vibration frequency information, the magnitude of the rotational speed, and the error coefficient is negatively correlated with the magnitude of the pressure information and the magnitude of the drilling depth information.
S104, respectively sending out laser signals at the current moment and the last moment through a laser transmitter, respectively obtaining a first reflection signal and a second reflection signal, and calculating the current angle change proportion of the near-bit according to the first reflection signal and the second reflection signal, wherein the interval between the current moment and the last moment is between 1 and 3S.
In some embodiments, referring to fig. 2, the step of sending, by the laser transmitter, a laser signal at the current time and at the previous time respectively, and obtaining a first reflected signal and a second reflected signal respectively, and calculating, according to the first reflected signal and the second reflected signal, a current angle change ratio of the near-bit includes:
s201, respectively transmitting the same laser signals to the inner wall of the near-bit at the previous moment and the current moment;
s202, acquiring a photosensitive image of the laser signal reflected at the last moment and the current moment through a photosensitive camera, wherein the photosensitive image is an image of the laser signal on a reflecting surface;
S203, respectively determining the reflection positions of the laser signals according to the brightness values of the photosensitive images at the previous moment and the current moment, and respectively obtaining the reflection intensities of the first reflection signals and the second reflection signals;
s204, determining the angle change proportion of the near-bit current moment according to the reflection positions and the reflection intensities of the current moment and the last moment.
In this embodiment, when the inclination angle measuring tool measures in the near-bit, the current inclination angle cannot be directly obtained, but the angle change proportion at the current moment can be obtained by calculating the laser change condition in the near-bit, so that the output result of the correction model can be further judged according to the angle change proportion, and the data screening process is realized.
The method includes the steps of firstly, transmitting a beam of laser signals in a near drill at the previous moment and the current moment respectively, then acquiring a photosensitive image of the laser signals on a reflecting surface through a built-in photosensitive camera so as to determine the reflecting position of the laser signals according to brightness values of the photosensitive images at the previous moment and the current moment, thereby obtaining the deviation of the reflecting positions at the previous moment and the current moment, then acquiring the reflecting intensities of a first reflecting signal and a second reflecting signal through a laser receiver so as to obtain the reflecting intensity difference value of the laser signals at the previous moment and the current moment, and calculating the angle change proportion at the current moment according to the reflecting intensity difference value, the deviation of the reflecting position and the difference value of the previous moment and the current moment. The angle change proportion is a change value of the inclination angle inside the near drill bit in unit time, so that the output result of the calibration model can be conveniently compared and corrected.
The interval time between the previous moment and the current moment is within 1 to 3 seconds, so that the influence on the accuracy of the final inclination angle measurement result caused by obvious deviation of the inclination angle when the interval is too large is avoided.
S105, inputting the related parameter information of the current moment and the last moment of the near-bit into the correction model to obtain a primary output result and a secondary output result, and correcting the primary output result, the initial measured inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle.
In some embodiments, referring to fig. 3, the inputting the related parameter information of the current moment and the previous moment of the near-bit into the correction model to obtain a primary output result and a secondary output result, correcting the primary output result, the initial measured inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle includes:
s301, obtaining a real-time inclination angle range according to the initial measurement inclination angle value and the error coefficient, and determining whether the primary output result is positioned in the real-time inclination angle range;
S302, after the primary output result is determined to be positioned in the real-time inclination angle range, calculating an angle difference value of the primary output result and the secondary output result in unit time, and judging the ratio of the angle difference value to the angle change;
s303, if the difference value of the angle difference value and the angle change proportion is smaller than or equal to an error threshold value, taking the primary output result as the target inclination angle;
and S304, if the difference value of the angle difference value and the angle change proportion is larger than an error threshold value, calculating to obtain the target inclination angle according to the secondary output result, the angle change proportion and the time difference value, wherein the time difference value is the difference value between the last time and the current time.
In this embodiment, after obtaining an initial measurement inclination value measured by an inclination measuring tool, a first-stage output result and a second-stage output result output by a correction model at a previous moment and a current moment, an error coefficient and an angle change proportion, firstly obtaining a real-time inclination range at the current moment according to the initial measurement inclination value and the error coefficient, judging whether the first-stage output result is located in the real-time inclination range, if the first-stage output result is located in the real-time inclination range, performing subsequent judgment, otherwise outputting a new inclination result through the correction model; after determining that the primary output result is positioned in the real-time inclination angle range, calculating an angle difference value of the primary output result and the secondary output result in unit time, and determining whether the currently output primary output result meets the requirement or not by comparing the angle difference value with the angle change proportion, wherein if the difference value of the angle difference value and the angle change proportion is smaller than or equal to an error threshold value, the primary output result is used as the target inclination angle; if the difference value of the angle difference value and the angle change proportion is larger than an error threshold value, the fact that the primary output result has obvious errors is indicated, and therefore the target inclination angle is obtained through calculation according to the secondary output result, the angle change proportion and the time difference value, wherein the time difference value is the difference value between the previous time and the current time, and therefore the final target inclination angle is obtained, and accuracy of measuring the near-bit internal inclination angle is effectively improved.
The inclination angle inside the near-bit is obtained by the calculation method, an accurate inclination angle measurement result can be obtained without stopping the near-bit, the drilling construction period is effectively improved, and the safety of drilling construction is ensured through the non-shutdown treatment of the near-bit.
It should be noted that, the protection scope of the method for calculating the near-bit inclination angle according to the present invention is not limited to the execution sequence of the steps listed in the present embodiment, and all the schemes implemented by increasing or decreasing the steps and replacing the steps according to the prior art according to the principles of the present invention are included in the protection scope of the present invention.
The invention also provides a device for calculating the inclination angle of the near-bit, referring to fig. 4, comprising:
the modeling module 401 is configured to obtain the current period data of the near drill bit, and establish a correction model according to the current period data;
an initial measurement module 402, configured to start an inclination measurement tool located inside the near-bit to obtain an initial measurement inclination value of the near-bit at a current moment, where a gyroscope is installed inside the inclination measurement tool;
the error calculation module 403 is configured to send an ultrasonic signal to a control terminal, obtain relevant parameter information of the near-bit at a current moment and a previous moment according to a feedback signal of the control terminal, and calculate an error coefficient of the inclination angle measurement tool according to the relevant parameter information at the current moment;
The proportion calculating module 404 is configured to send out laser signals at the current time and the last time respectively through a laser transmitter and obtain a first reflected signal and a second reflected signal respectively, and calculate a current angle change proportion of the near-bit according to the first reflected signal and the second reflected signal, where an interval between the current time and the last time is between 1 and 3 s;
and the correction output module 405 is configured to input the relevant parameter information of the current time and the previous time of the near-bit into the correction model to obtain a primary output result and a secondary output result, and correct the primary output result, the initial measured inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle.
It should be noted that, it should be understood that the division of the modules of the above apparatus is merely a division of a logic function, and may be fully or partially integrated into a physical entity or may be physically separated. And these modules may all be implemented in software in the form of calls by the processing element; or can be realized in hardware; the method can also be realized in a form of calling software by a processing element, and the method can be realized in a form of hardware by a part of modules. For example, the x module may be a processing element that is set up separately, may be implemented in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the x module may be called and executed by a processing element of the apparatus. The implementation of the other modules is similar. In addition, all or part of the modules can be integrated together or can be independently implemented. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in a software form.
For example, the modules above may be one or more integrated circuits configured to implement the methods above, such as: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or one or more digital signal processors (Digital Singnal Processor, DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc. For another example, when a module above is implemented in the form of a processing element scheduler code, the processing element may be a general purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processor that may invoke the program code. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
The storage medium of the present invention stores a computer program which, when executed by a processor, implements the method for calculating the near-bit inclination angle described above. The storage medium includes: various media capable of storing program codes, such as ROM, RAM, magnetic disk, U-disk, memory card, or optical disk.
A terminal of the present invention includes: a processor and a memory;
the memory is used for storing a computer program;
The processor is used for executing the computer program stored in the memory so that the terminal executes the method for calculating the near-bit inclination angle.
Preferably, the processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
It should be noted that, the device for calculating the near-bit inclination angle according to the present invention may implement the method for calculating the near-bit inclination angle according to the present invention, but the implementation device for implementing the method for calculating the near-bit inclination angle according to the present invention includes, but is not limited to, the structure of the device for calculating the near-bit inclination angle as exemplified in the present embodiment, and all structural modifications and substitutions made in the prior art according to the principles of the present invention are included in the protection scope of the present invention.
In summary, the calculation method, the storage medium and the terminal of the near-bit inclination angle establish the correction model for the forward data of the near-bit so as to carry out comparison correction on the measurement result of the measuring tool according to the correction model, the measurement process of the near-bit inclination angle can be realized without depending on the traditional tool measurement, the output result of the neural network model is adopted, the accuracy of the near-bit inclination angle measurement is effectively improved, meanwhile, the related parameter information at the current moment is obtained so as to obtain the error coefficient of the measuring tool at the current moment, the angle change proportion of the near-bit at the current moment is obtained by calculating by matching with the laser transmitter, the primary output result and the secondary output result output by the correction model are conveniently corrected through the error coefficient and the angle change proportion, the accuracy of the measurement result is effectively improved, the measurement process of the near-bit inclination angle can be realized without stopping the near-bit under the condition of not changing hardware, the construction period is not only accelerated, but also the formation inclination angle falling risk is avoided because of the near-bit is stopped, in the measurement process of the measuring tool can effectively reduce the measurement deviation, and the accuracy of the subsequent obtained target is improved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A method for calculating a near bit inclination angle, comprising:
acquiring the forward data of the near drill bit, and establishing a correction model according to the forward data;
starting an inclination angle measuring tool positioned in the near-bit to obtain an initial measurement inclination angle value of the near-bit at the current moment, wherein a gyroscope is arranged in the inclination angle measuring tool;
sending an ultrasonic signal to a control terminal, acquiring relevant parameter information of the near drill bit at the current moment and the last moment according to a feedback signal of the control terminal, and calculating an error coefficient of the inclination angle measuring tool according to the relevant parameter information at the current moment;
the method comprises the steps that a laser transmitter respectively sends out laser signals at the current moment and the last moment and respectively obtains a first reflection signal and a second reflection signal, and the current angle change proportion of the near drill bit is calculated according to the first reflection signal and the second reflection signal, wherein the interval between the current moment and the last moment is 1-3 s;
And inputting the related parameter information of the current moment and the last moment of the near-bit into the correction model to obtain a primary output result and a secondary output result, and correcting the primary output result, the initial measured inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle.
2. The method for calculating a near-bit inclination angle according to claim 1, wherein the obtaining the near-bit forward-period data and establishing a correction model according to the forward-period data comprises:
acquiring related parameter information of different moments in the near-bit forward-period data and historical inclination angle information corresponding to the related parameter information, wherein the related parameter information comprises rotation speed information, vibration frequency information, drilling depth information and pressure information;
establishing an initial neural network model according to the related parameter information and the historical inclination angle information, wherein the initial neural network model comprises a first input neuron, a second input neuron, a third input neuron, a fourth input neuron, a fifth input neuron, a hidden neuron and an output neuron, and the first input neuron, the second input neuron, the third input neuron, the fourth input neuron and the fifth input neuron are subjected to fitting through fitting neurons and then output through an output neuron output model;
Respectively inputting the rotation speed information, the vibration frequency information, the drilling depth information and the pressure information at the same moment into the first input neuron, the second input neuron, the third input neuron and the fourth input neuron correspondingly as training data, and inputting the historical inclination angle information corresponding to the moment into the fifth input neuron as comparison data to compare the output results of the output neurons;
optimizing and adjusting hidden neurons in the initial neural network model according to the difference between the historical inclination angle information and the output result;
and continuously inputting the related parameter information and the historical inclination angle information into the initial neural network model for training until the difference between the output result of the output neuron and the corresponding historical inclination angle information is smaller than a model threshold value, and taking the adjusted initial neural network model as the correction model.
3. The method of claim 2, wherein the magnitude of the model threshold is positively correlated with the size of the near bit.
4. The method for calculating the inclination angle of the near-bit according to claim 1, wherein the transmitting the ultrasonic signal to the control terminal to obtain the relevant parameter information of the near-bit at the current time, and calculating the error coefficient of the inclination angle measuring tool according to the relevant parameter information, comprises:
Sending an ultrasonic signal to the control terminal;
the control terminal reads the current moment and rotation speed information of the near-bit, vibration frequency information, drilling depth information and pressure information according to the ultrasonic signals;
transmitting the rotation speed information, the vibration frequency information, the drilling depth information and the pressure information to a receiving end in the near-bit;
and the receiving end calculates an error coefficient of the inclination angle measuring tool under the current condition according to the rotating speed information, the vibration frequency information, the drilling depth information and the pressure information.
5. The method according to claim 4, wherein the error coefficient is positively correlated with the magnitude of the vibration frequency information and the magnitude of the rotational speed, and the error coefficient is negatively correlated with the magnitude of the pressure information and the magnitude of the drilling depth information. .
6. The method for calculating a near-bit inclination angle according to claim 1, wherein the calculating the current angle change ratio of the near-bit according to the first reflected signal and the second reflected signal by the laser transmitter respectively sending out laser signals at the current time and the previous time and respectively obtaining the first reflected signal and the second reflected signal comprises:
Transmitting the same laser signals to the inner wall of the near-bit at the previous moment and the current moment respectively;
acquiring a photosensitive image of the laser signal when the laser signal is reflected at the last moment and the current moment through a photosensitive camera, wherein the photosensitive image is an image of the laser signal on a reflecting surface;
respectively determining the reflection positions of the laser signals according to the brightness values of the photosensitive images at the previous moment and the current moment, and respectively obtaining the reflection intensities of the first reflection signals and the second reflection signals;
and determining the angle change proportion of the near-bit at the current moment according to the reflection positions and the reflection intensities at the current moment and the last moment.
7. The method for calculating a near-bit inclination angle according to any one of claims 1 to 6, wherein inputting the relevant parameter information of the current time and the previous time of the near-bit into the correction model to obtain a primary output result and a secondary output result, correcting the primary output result, the initial measured inclination angle value and the secondary output result according to the error coefficient and the angle change ratio to obtain a target inclination angle comprises:
Obtaining a real-time inclination angle range according to the initial measurement inclination angle value and the error coefficient, and determining whether the primary output result is positioned in the real-time inclination angle range;
after the primary output result is determined to be positioned in the real-time inclination angle range, calculating an angle difference value of the primary output result and the secondary output result in unit time, and judging the ratio of the angle difference value to the angle change;
if the difference value of the angle difference value and the angle change proportion is smaller than or equal to an error threshold value, the primary output result is used as the target inclination angle;
and if the difference value of the angle difference value and the angle change proportion is larger than an error threshold value, calculating to obtain the target inclination angle according to the secondary output result, the angle change proportion and the time difference value, wherein the time difference value is the difference value between the last time and the current time.
8. A near bit inclination calculation apparatus, comprising:
the modeling module is used for acquiring the forward data of the near drill bit and establishing a correction model according to the forward data;
the initial measurement module is used for starting an inclination angle measurement tool positioned in the near-bit to acquire an initial measurement inclination angle value of the near-bit at the current moment, wherein a gyroscope is arranged in the inclination angle measurement tool;
The error calculation module is used for sending an ultrasonic signal to the control terminal, acquiring the related parameter information of the near-bit at the current moment and the last moment according to the feedback signal of the control terminal, and calculating the error coefficient of the inclination angle measuring tool according to the related parameter information at the current moment;
the proportion calculation module is used for respectively sending out laser signals at the current moment and the last moment through the laser transmitter and respectively obtaining a first reflection signal and a second reflection signal, and calculating the current angle change proportion of the near drill bit according to the first reflection signal and the second reflection signal, wherein the interval between the current moment and the last moment is between 1 and 3 s;
and the correction module is used for inputting the related parameter information of the current moment and the last moment of the near-bit into the correction model to obtain a primary output result and a secondary output result, and correcting the primary output result, the initial measurement inclination angle value and the secondary output result according to the error coefficient and the angle change proportion to obtain a target inclination angle.
9. A storage medium having stored thereon a computer program, which when executed by a processor, implements the near bit inclination calculation method of any one of claims 1 to 7.
10. A terminal, comprising: a processor and a memory;
the memory is used for storing a computer program;
the processor is configured to execute the computer program stored in the memory, so that the terminal performs the method for calculating the near-bit inclination angle according to any one of claims 1 to 7.
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| CN202310002401.XA CN116026286A (en) | 2023-01-03 | 2023-01-03 | Near-bit inclination angle calculation method and device, storage medium and terminal |
| PCT/CN2024/070174 WO2024146523A1 (en) | 2023-01-03 | 2024-01-02 | Near-bit inclination angle calculation method and apparatus, storage medium and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118177995A (en) * | 2024-05-16 | 2024-06-14 | 苏州科灵医疗科技有限公司 | Intelligent calibration method for surgical laser display angle ruler |
| WO2024146523A1 (en) * | 2023-01-03 | 2024-07-11 | 上海达坦能源科技股份有限公司 | Near-bit inclination angle calculation method and apparatus, storage medium and terminal |
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| WO2005017315A1 (en) * | 2003-07-29 | 2005-02-24 | Baker Hughes Incorporated | Measurement-while-drilling assembly using real-time toolface oriented measurements |
| CA2932871C (en) * | 2014-01-02 | 2022-04-05 | Sicco Dwars | Steerable drilling method and system |
| CN106246168B (en) * | 2016-08-29 | 2017-09-19 | 中国科学院地质与地球物理研究所 | A kind of nearly bit drilling tool posture measurement while drilling device and measuring method |
| CN206158732U (en) * | 2016-08-29 | 2017-05-10 | 中国科学院地质与地球物理研究所 | Nearly drill bit drilling tool gesture is along with boring measuring device |
| CN106194159B (en) * | 2016-08-30 | 2023-02-28 | 安徽惠洲地质安全研究院股份有限公司 | Mine inclination measurement while drilling exploration system and measuring method thereof |
| US11220899B2 (en) * | 2020-05-11 | 2022-01-11 | Institute Of Geology And Geophysics, Chinese Academy Of Sciences | Gyro measurement while drilling system and method therefor |
| CN113743175B (en) * | 2020-10-21 | 2024-05-31 | 中国石油天然气集团有限公司 | Stratum inclination analysis method and device, computer equipment and storage medium |
| CN113153270A (en) * | 2021-04-27 | 2021-07-23 | 西南石油大学 | Measurement-while-drilling method for near-bit dynamic well inclination angle and tool face angle |
| CN116026286A (en) * | 2023-01-03 | 2023-04-28 | 上海达坦能源科技股份有限公司 | Near-bit inclination angle calculation method and device, storage medium and terminal |
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| WO2024146523A1 (en) * | 2023-01-03 | 2024-07-11 | 上海达坦能源科技股份有限公司 | Near-bit inclination angle calculation method and apparatus, storage medium and terminal |
| CN118177995A (en) * | 2024-05-16 | 2024-06-14 | 苏州科灵医疗科技有限公司 | Intelligent calibration method for surgical laser display angle ruler |
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