A method, device, equipment and storage medium for decomposing guided resultant force

Abstract

This application provides a method, apparatus, device, and storage medium for decomposing a steering resultant force. The method includes: obtaining a steering resultant force, which includes magnitude and direction and is the resultant of three output forces; determining an angle θ between one of the output forces and the steering resultant force; and, based on the angle θ and the steering resultant force, decomposing the three output forces based on the constraints of minimizing the scalar sum of the three output forces and maximizing the steering resultant force, thereby obtaining a variation pattern for the three output forces. Embodiments of this application can achieve efficient output of the steering resultant force, improving drilling efficiency.

Description

Technical Field

[0001] The present invention relates to the field of oil and gas well engineering, and in particular to a method, device, equipment and storage medium for decomposing a steering resultant force. Background Art

[0002] Rotary steerable drilling technology is a technology that performs steerable drilling under the condition of full rotation of the drill string. It is equipped with a controllable bias stabilizer or a rotary steerable tool that can control the drill bit's steering force above the drill bit, and is equipped with a complete rotary steerable drilling control system that can control the wellbore trajectory during the drill string's rotation drilling. There are many factors that affect the changes in the wellbore trajectory of the rotary steerable system, mainly the following factors: the drill bit's steering force, drill tool structure, operating parameters, and the drill bit's mechanical force affected by wellbore geometry. In the specific drilling construction process, when the geological parameters and drill tool combination are fixed, the drill bit's steering force is the main factor affecting the changes in the rotary steerable system's wellbore trajectory. The drill bit's steering force is composed of three output forces provided by three eccentric ribs, and the angle between the three output forces provided by the three eccentric ribs is 120 degrees.

[0003] During drilling operations, the maximum value of the drill bit's guiding force in each given direction is determined by the performance of the drill bit itself. However, in actual drilling, given the fixed maximum and minimum values ​​for each output force, operators often fail to effectively combine the three output forces to achieve an efficient output guiding force, ultimately wasting resources and reducing drilling efficiency. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a method, device, equipment and storage medium for decomposing the steering force, so as to achieve efficient output of the steering force and improve drilling efficiency.

[0005] To achieve the above objectives, on the one hand, an embodiment of the present application provides a method for decomposing a directed resultant force, comprising:

[0006] Obtaining a guiding resultant force, wherein the guiding resultant force includes a magnitude and a direction, and the guiding resultant force is the resultant force of the three output forces;

[0007] Determine the angle θ between one of the output forces and the guide resultant force;

[0008] According to the angle θ and the guide resultant force, based on the constraint conditions that the scalar sum of the three output forces is minimized and the guide resultant force is maximized, the three output forces are decomposed to obtain the variation rules of the three output forces.

[0009] Preferably, the guiding force is F, and the three output forces are respectively the first force component F1, the second force component F2 and the third force component F3; the minimum values ​​of the first force component F1, the second force component F2 and the third force component F3 are all F min , the maximum value is F max ; The angle between the guiding resultant force F and the first component force F1 is θ;

[0010] Accordingly, the three obtained change rules of the output forces include:

[0011]

[0012]

[0013]

[0014] in, m1=bc1-b1c, m2=a1c-ac1, m3=ab1-a1b, a=sinθ, b=sin(θ-2π / 3), c=sin(θ-4π / 3), a1=cosθ, b1=cos(θ-2π / 3), c1=cos(θ-4π / 3).

[0015] Preferably, according to the variation law of the three output forces and based on the principle that the offsetting effect of one of the output forces on the guide resultant force is minimized, the value ranges of the three output forces within different value ranges of the angle θ are determined.

[0016] Preferably, when 0°≤θ<120°, the values ​​of the three output forces are calculated using the following formula, including:

[0017]

[0018] Preferably, when 120°≤θ<240°, the values ​​of the three output forces are calculated using the following formula, including:

[0019]

[0020] Preferably, when 240°≤θ<360°, the values ​​of the three output forces are calculated using the following formula, including:

[0021]

[0022] On the other hand, the present application provides a processing device for guiding resultant force decomposition, characterized in that the device includes:

[0023] A guide force acquisition module is used to obtain a guide resultant force, wherein the guide resultant force includes a magnitude and a direction and is the resultant force of the three output forces;

[0024] An angle determination module is used to determine the angle θ between one of the output forces and the guide resultant force;

[0025] The output force variation law determination module is used to decompose the three output forces according to the angle θ and the guide resultant force, based on the constraint conditions that the scalar sum of the three output forces is minimum and the guide resultant force is maximum, to obtain the variation law of the three output forces.

[0026] In another aspect, the present application further provides an electronic device, comprising at least one processor and a memory for storing processor-executable instructions, wherein when the processor executes the instructions, the following is achieved:

[0027] Obtaining a guiding resultant force, wherein the guiding resultant force includes a magnitude and a direction, and the guiding resultant force is the resultant force of the three output forces;

[0028] Determine the angle θ between one of the output forces and the guide resultant force;

[0029] According to the angle θ and the guide resultant force, based on the constraint conditions that the scalar sum of the three output forces is minimized and the guide resultant force is maximized, the three output forces are decomposed to obtain the variation rules of the three output forces.

[0030] In another aspect, the present application further provides a computer storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0031] Obtaining a guiding resultant force, wherein the guiding resultant force includes a magnitude and a direction, and the guiding resultant force is the resultant force of the three output forces;

[0032] Determine the angle θ between one of the output forces and the guide resultant force;

[0033] According to the angle θ and the guide resultant force, based on the constraint conditions that the scalar sum of the three output forces is minimized and the guide resultant force is maximized, the three output forces are decomposed to obtain the variation rules of the three output forces.

[0034] As can be seen from the technical solutions provided by the embodiments of the present application, by decomposing the variation patterns of the three output forces under the constraints of minimizing the scalar sum of the three output forces and maximizing the guide resultant force, the embodiments of the present application overcome the drawback of the prior art of being unable to effectively combine the three output forces. Therefore, the embodiments of the present application can improve drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] Figure 1 This is a flow chart of a method for decomposing a directed resultant force provided in an embodiment of the present application;

[0037] Figure 2 1 is a schematic diagram of force decomposition of three output forces provided in an embodiment of the present application;

[0038] Figure 3 1 is a schematic diagram provided in an embodiment of the present application for reflecting the value ranges of three output forces within different value ranges of the angle θ;

[0039] Figure 4 This is a schematic diagram of the module structure of a device for guiding resultant force decomposition provided in an embodiment of the present application;

[0040] Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0042] The following describes the implementation plan of this specification using a specific application scenario as an example. Figure 1It is a flow chart of an embodiment of a method for guiding the decomposition of combined forces provided in this specification. Although this specification provides the method operation steps or device structures shown in the following embodiments or drawings, more or fewer operation steps or module units may be included in the method or device based on routine or no creative labor. In the steps or structures where there is no necessary causal relationship logically, the execution order of these steps or the module structure of the device is not limited to the execution order or module structure shown in the embodiments or drawings of this specification. When the method or module structure is applied to an actual device, server or terminal product, it can be executed sequentially or in parallel according to the method or module structure shown in the embodiment or drawings (for example, a parallel processor or multi-threaded processing environment, or even a distributed processing, server cluster implementation environment).

[0043] Of course, the description of the following embodiments does not limit other technical solutions that can be expanded based on this specification.

[0044] Before describing the embodiments of the present application, the embodiments of the present application are first described in principle so that those skilled in the art can understand the embodiments of the present application more clearly.

[0045] The bottom hole assembly of the rotary steerable system consists of an upper stabilizer, an eccentric rib actuator, and a drill bit. During drilling, when the drill bit interacts with the formation, the various anisotropies of the rock and the drill bit will affect the drill bit force. Considering the combined effect of the two, the comprehensive deflecting force formula of the rotary steerable system drill bit under the formation conditions is: F1 = F0 + Fd;

[0046] in,

[0047] In the above formula, Pd is the bit pressure, α is the well inclination angle at the drill bit, H is the comprehensive cutting anisotropy index, and β is the formation inclination angle. The above formula comprehensively reflects the influence of various cutting anisotropies of the drill bit, various formation anisotropies, formation inclination angle, well inclination angle, bit pressure, and drill bit inclination angle on the formation force.

[0048] Among them, F0 is the mechanical side cutting force of the drill bit. The mechanical side cutting force F0 of the drill bit mainly consists of two parts: the equivalent force of the eccentric rib and the equivalent force generated by the deadweight of the drill tool assembly. Its calculation formula is:

[0049]

[0050] In the above formula, W represents the deadweight of the system, F represents the equivalent force of the eccentric rib, L1 is the distance from the eccentric rib actuator to the drill bit, and L2 is the distance from the upper centralizer to the eccentric rib.

[0051] From the above analysis, it can be seen that when the geological parameters and drilling tool combination are fixed, the mechanical cutting force of the drill bit can be changed by adjusting the equivalent force of the eccentric rib, so that the drilling tool deflection rate can be adjusted.

[0052] There are three eccentric ribs, each of which provides an output force. The angle between the three output forces provided by the three eccentric ribs is 120 degrees. The three output forces are combined to form a guiding force, which is the equivalent force of the eccentric ribs.

[0053] Figure 1 1 is a method flow diagram of an embodiment of a method for guiding resultant force decomposition provided by the present application. The method for guiding resultant force decomposition provided by the present application includes:

[0054] S101: Obtaining a guide resultant force, which includes magnitude and direction and is the resultant force of three output forces.

[0055] The resulting steering force is F. During drilling, the direction of the steering force is determined as the drilling direction is determined. The maximum steering force in a given direction is determined by the performance of the drilling tool. The resulting steering force F is the maximum steering force in any given direction.

[0056] The three output forces are the first force component F1, the second force component F2 and the third force component F3. The minimum values ​​of the first force component F1, the second force component F2 and the third force component F3 are all F min , the maximum value is F max .

[0057] S102: Determine the angle θ between one of the output forces and the guide resultant force.

[0058] In some embodiments, the angle between the first component force F1 and the guide resultant force F is determined to be θ.

[0059] S103: According to the included angle θ and the guide resultant force, based on the constraints of the scalar sum of the three output forces being minimum and the guide resultant force being maximum, the three output forces are decomposed to obtain the variation law of the three output forces.

[0060] Reference Figure 2 Specifically, the three output forces are decomposed according to the parallelogram law.

[0061] get:

[0062] From the two equations above, we can see that to achieve a certain output F, different combinations of F1, F2, and F3 are possible under different constraints. Based on the constraints of minimizing the scalar sum of the three output forces and maximizing the guide force, the scalar sum of the three output forces F1, F2, and F3 (|F1|+F2|+F3|) is minimized, while maximizing the guide force F. Under these constraints, let a = sinθ, b = sin(θ-2π / 3), c = sin(θ-4π / 3), a1 = cosθ, b1 = cos(θ-2π / 3), and c1 = cos(θ-4π / 3).

[0063] Then we have:

[0064]

[0065] The equation system formed by the above two equations is a general expression for a straight line in space. Let F1 = 0, then the equation system becomes:

[0066]

[0067] Solving the above equation, we get:

[0068]

[0069]

[0070] make:

[0071] k1=0,

[0072] Then the standard form of the straight line shown in the above equations is:

[0073]

[0074] The equation of the plane passing through the origin and perpendicular to the spatial line shown in the above equation is:

[0075] (bc1-b1c)F1+(a1c-ac1)F2+(ab1-a1b)F3=0; let:

[0076] m1=bc1-b1c, m2=a1c-ac1, m3=ab1-a1b,

[0077] Then the solution at the intersection of the space line and the plane equation is:

[0078]

[0079]

[0080]

[0081] Then the three output force expressions can be deduced as follows:

[0082]

[0083]

[0084]

[0085] The changing rules of the first force component F1, the second force component F2 and the third force component F3 are reflected by three output force expressions, that is, under a certain guide resultant force F, as the value of the angle θ changes, the corresponding values ​​of the first force component F1, the second force component F2 and the third force component F3 change.

[0086] S104: According to the variation law of the three output forces and based on the principle that one of the output forces has the least offsetting effect on the guide resultant force, the value ranges of the three output forces within different value ranges of the included angle θ are determined.

[0087] The expressions of the first force component F1, the second force component F2 and the third force component F3 are equivalently converted to:

[0088]

[0089]

[0090]

[0091] Combined with the distribution of the first force component F1, the second force component F2 and the third force component F3, when 0°≤θ<120°, the third force component F3 offsets the guide resultant force, and the first force component F1 and the second force component F2 enhance the guide resultant force. Therefore, in order to ensure that the output value of the guide resultant force within this angle range is the maximum value F, the third force component F3 is F min At this time, the first force component F1 and the second force component F2 are adjusted with the angle θ to ensure that the direction of the guiding force F remains unchanged. The third force component F3 is F min After that, through the third force F3 = F min The value of the corresponding guide resultant force F can be determined, and the first component force F1 and the second component force F2 can be obtained by solving, and then the value ranges of the three output forces F1, F2 and F3 can be determined.

[0092] When 120°≤θ<240°, the first force component F1 counteracts the guide resultant force, while the second force component F2 and the third force component F3 enhance the guide resultant force. Therefore, in order to ensure that the output value of the guide resultant force within this angle range is the maximum value F, the first force component F1 is F min At this time, the second force component F2 and the third force component F3 are adjusted with the angle θ to ensure that the direction of the guiding force F remains unchanged. The first force component F1 is Fmin After that, through the first force F1 = F min The value of the corresponding guide resultant force F can be determined, and the second component force F2 and the third component force F3 can be obtained by solving, thereby determining the value ranges of the three output forces F1, F2 and F3.

[0093] When 240°≤θ<360°, the second force component F2 counteracts the guide resultant force, while the first force component F1 and the third force component F3 enhance the guide resultant force. Therefore, in order to ensure that the output value of the guide resultant force within this angle range is the maximum value F, the second force component F2 is F min At this time, the first force component F1 and the third force component F3 are adjusted with the angle θ to ensure that the direction of the guiding force F remains unchanged. The second force component F2 is F min After that, through the second force F2 = F min The corresponding guide resultant force F can be determined, and the first component force F1 and the third component force F3 can be obtained by solving, and then the calculation formulas of the three output forces F1, F2 and F3 are determined.

[0094] Right now:

[0095] When 0°≤θ<120°:

[0096] have

[0097] When 120°≤θ<240°:

[0098] have

[0099] When 240°≤θ<360°:

[0100] have

[0101] For example, refer to Figure 3 , when F min =15N, F max = 240N, computer simulation yields the adjustment curves for F1, F2, and F3 as the angle θ changes. The horizontal axis represents the angle θ, ranging from 0 to 2π, with each grid representing 0.2π. The vertical axis represents the simulated force in N, with each grid representing 50N. The solid line represents the curve for F1, the dashed line represents the curve for F2, and the dotted line represents the curve for F3.

[0102] When θ is 0-2π / 3, the third force component F3 is 15N. At this time, the first force component F1 and the second force component F2 are adjusted with the included angle θ to ensure that the direction of the guiding force F remains unchanged.

[0103] When θ is 2π / 3-4π / 3, the first force component F1 is 15N. At this time, the second force component F2 and the third force component F3 are adjusted with the included angle θ to ensure that the direction of the guiding force F remains unchanged.

[0104] When θ is 4π / 3-2π, the second force component F2 is 15N. At this time, the first force component F1 and the third force component F3 are adjusted with the included angle θ to ensure that the direction of the guiding resultant force F remains unchanged.

[0105] Based on the above-mentioned method for guiding the decomposition of the resultant force, one or more embodiments of this specification also provide a device for guiding the decomposition of the resultant force. The device may include a system (including a distributed system), software (application), module, component, server, client, etc. that uses the method described in the embodiment of this specification and is combined with the necessary implementation hardware. Based on the same innovative concept, the device in one or more embodiments provided in the embodiment of this specification is as described in the following embodiments. Since the implementation scheme and method for solving the problem of the device are similar, the implementation of the specific device in the embodiment of this specification can refer to the implementation of the aforementioned method, and the repetitions will not be repeated. As used below, the term "unit" or "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0106] Specifically, Figure 4 This is a schematic diagram of the module structure of an embodiment of a device for guiding the decomposition of resultant force provided in this specification, such as Figure 3 As shown, the device for decomposing the guiding resultant force provided in this specification includes: a guiding force acquisition module 100, an angle determination module 200, an output force change law determination module 300, and an output force value range determination module 400.

[0107] A guide force acquisition module 100 is used to obtain a guide resultant force, which includes a magnitude and a direction and is the resultant force of the three output forces;

[0108] An angle determination module 200 is used to determine an angle θ between one of the output forces and the guide resultant force;

[0109] The output force variation law determination module 300 is configured to decompose the three output forces based on the angle θ and the guide resultant force, based on the constraints of minimizing the scalar sum of the three output forces and maximizing the guide resultant force, to obtain a variation law of the three output forces;

[0110] The output force value range determination module 400 is used to determine the value ranges of the three output forces within different value ranges of the angle θ according to the variation law of the three output forces and based on the principle that one of the output forces has the smallest offsetting effect on the guide resultant force.

[0111] This application also provides an electronic device, referring to Figure 5 As shown, it includes at least one processor and a memory for storing processor-executable instructions, and when the processor executes the instructions, it implements:

[0112] Obtain the guiding resultant force, which includes magnitude and direction and is the resultant force of the three output forces;

[0113] Determine the angle θ between one of the output forces and the guide resultant force;

[0114] According to the angle θ and the guide resultant force, based on the constraint conditions that the scalar sum of the three output forces is minimized and the guide resultant force is maximized, the three output forces are decomposed to obtain the variation law of the three output forces;

[0115] According to the variation law of the three output forces and based on the principle that one of the output forces has the least offsetting effect on the guide resultant force, the value ranges of the three output forces within different value ranges of the included angle θ are determined.

[0116] The present application also provides a computer storage medium having a computer program stored thereon, which, when executed by a processor, implements the following steps:

[0117] Obtain the guiding resultant force, which includes magnitude and direction. The guiding resultant force is the resultant force of the three output forces.

[0118] Determine the angle θ between one of the output forces and the guide resultant force;

[0119] According to the angle θ and the guide resultant force, based on the constraint conditions that the scalar sum of the three output forces is minimized and the guide resultant force is maximized, the three output forces are decomposed to obtain the variation law of the three output forces;

[0120] According to the variation law of the three output forces and based on the principle that one of the output forces has the least offsetting effect on the guide resultant force, the value ranges of the three output forces within different value ranges of the included angle θ are determined.

[0121] In the 1990s, technological improvements could be clearly distinguished as either hardware improvements (for example, improvements to circuit structures like diodes, transistors, and switches) or software improvements (improvements to process flows). However, with the advancement of technology, many process flow improvements today can now be considered direct improvements to hardware circuit structures. Designers almost always create the corresponding hardware circuit structure by programming the improved process flow into the hardware circuit. Therefore, it cannot be said that a process flow improvement cannot be implemented using hardware modules. For example, a programmable logic device (PLD), such as a field programmable gate array (FPGA), is an integrated circuit whose logical function is determined by user programming. Designers can "integrate" a digital system on a PLD through their own programming, without having to hire a chip manufacturer to design and manufacture a dedicated integrated circuit chip. Moreover, nowadays, instead of manually fabricating integrated circuit chips, this programming is mostly done using "logic compiler" software. This is similar to the software compiler used when developing programs. Before compilation, the original code must also be written in a specific programming language, called a hardware description language (HDL). There is not just one HDL, but many, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, RHDL (Ruby Hardware Description Language), etc. The most commonly used ones are VHDL (Very-High-Speed ​​Integrated Circuit Hardware Description Language) and Verilog. Those skilled in the art will also understand that by simply programming the method flow in one of these hardware description languages ​​and then programming it into an integrated circuit, a hardware circuit that implements the logic method flow can be easily obtained.

[0122] Those skilled in the art will also appreciate that, in addition to implementing the controller in pure computer-readable program code, it is entirely possible to implement the same functionality by logically programming the method steps in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, embedded microcontrollers, and the like. Therefore, such a controller can be considered a hardware component, and the devices included therein for implementing various functions can also be considered structures within the hardware component. Alternatively, the devices for implementing various functions can be considered both software modules implementing the method and structures within the hardware component.

[0123] The devices and modules described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions.

[0124] For the convenience of description, the above devices are described as being divided into various modules according to their functions. Of course, when implementing this application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0125] It can be seen from the description of the above embodiments that those skilled in the art can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product. In a typical configuration, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory. The computer software product may include several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application or certain parts of the embodiments. The computer software product can be stored in a memory, which may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium. Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0126] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences from other embodiments. In particular, the device embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0127] The present application can be used in a wide variety of general-purpose or specialized computer system environments or configurations, such as personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, and distributed computing environments that include any of the above.

[0128] The present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communications network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0129] Although the present application has been described with reference to the embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application. It is intended that the appended claims include these modifications and variations without departing from the spirit of the present application.

Claims

1. A method for improving drilling efficiency based on decomposition of the guiding force, wherein the guiding force of the drill bit is composed of three output forces provided by three eccentric ribs, and the angle between the three output forces provided by the three eccentric ribs is 120 degrees, characterized in that: include: Obtaining a guiding resultant force, wherein the guiding resultant force includes a magnitude and a direction, and the guiding resultant force is the resultant force of the three output forces; Determine the angle θ between one of the output forces and the guide resultant force; According to the angle θ and the guide resultant force, based on the constraint conditions that the scalar sum of the three output forces is minimized and the guide resultant force is maximized, the three output forces are decomposed to obtain a variation law of the three output forces; According to the variation law of the three output forces and based on the principle that one of the output forces has the least offsetting effect on the guide resultant force F, the values ​​of the three output forces within different value ranges of the angle θ are determined; The guiding force is F, and the three output forces are the first force component F1, the second force component F2 and the third force component F3; the minimum values ​​of the first force component F1, the second force component F2 and the third force component F3 are all F min , the maximum value is F max ; The angle between the guiding resultant force F and the first component force F1 is θ; Accordingly, the three obtained change rules of the output forces include: Among them, m1=bc1-b1c, m2=a1c-ac1, m3=ab1-a1b, a=sinθ, b=sin(θ-2π / 3), c=sin(θ-4π / 3), a1=cosθ, b1=cos(θ-2π / 3), c1=cos(θ-4π / 3); When 0°≤θ<120°, the values ​​of the three output forces are calculated using the following formulas, including: When 120°≤θ<240°, the values ​​of the three output forces are calculated using the following formulas, including: When 240°≤θ<360°, the values ​​of the three output forces are calculated using the following formulas, including: The output forces of the three eccentric ribs are combined to form the guiding force of the drill bit, namely the equivalent force of the eccentric ribs. By adjusting the equivalent force of the eccentric ribs, the mechanical cutting force of the drill bit can be changed, and the inclination rate of the drill tool can be adjusted.

2. A processing device based on decomposition of steering force to improve drilling efficiency, characterized in that: The method according to claim 1, wherein the device comprises: A guide force acquisition module is used to obtain a guide resultant force, wherein the guide resultant force includes a magnitude and a direction and is the resultant force of the three output forces; An angle determination module is used to determine the angle θ between one of the output forces and the guide resultant force; The output force variation law determination module is used to decompose the three output forces according to the angle θ and the guide resultant force, based on the constraint conditions that the scalar sum of the three output forces is minimum and the guide resultant force is maximum, to obtain the variation law of the three output forces.

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