Drilling parameter adjusting method and system, electronic equipment and storage medium

Abstract

The invention discloses a well drilling parameter adjusting method and system, electronic equipment and a storage medium, and relates to the technical field of well drilling exploration, the method comprises the steps that a kinetic analysis model of a drill string used when a horizontal well is drilled is constructed, and the kinetic analysis model is associated with friction uncertainty; in the drilling process of the horizontal well, the friction resistance between a drill column and the well wall of the horizontal well and the torque of the drill column are calculated in real time through the kinetic analysis model; and according to the friction resistance between the drill column and the well wall of the horizontal well and the torque of the drill column, the drilling parameters of the horizontal well are adjusted in real time. According to the method, the kinetic analysis model considering the friction uncertainty is constructed, the friction resistance between the drill column and the well wall of the horizontal well and the torque of the drill column can be calculated more accurately, and accurate adjustment of the drilling parameters of the horizontal well is further achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling exploration, and in particular to a method, system, electronic equipment and storage medium for adjusting drilling parameters. Background Art

[0002] Unconventional oil and gas reservoirs are an important area for future oil and gas replacement. Horizontal wells are one of the key technologies for achieving efficient development of unconventional oil and gas reservoirs. As well depths continue to increase, horizontal section lengths continue to increase, wellbore structures become more complex, and drill tool combinations become more diverse, all of which lead to increased trajectory uncertainty and more complex cuttings accumulation. This poses greater challenges to safe and efficient drilling, directly affecting oil and gas drilling efficiency. Current drill string mechanics research methods to address these issues are as follows:

[0003] 1) Patent application number CN105401935A, entitled "A Drilling WOB Calculation Method, Apparatus, and WOB Indicator," discloses a method for obtaining mechanical characteristic data of the drill string and coupling optimized real-time drilling data with the mechanical characteristic data to obtain a downhole axial vibration intensity index. This method analyzes WOB by coupling axial force variations, but fails to consider the damping effect of system dynamics during the calculation process, making it difficult to reflect fluctuations in WOB at the drill bit.

[0004] 2) Patent application number CN116244906A, entitled "A Simulation Method for Stick-Slip Vibration of Drill Strings in Horizontal Oil and Gas Wells," considers the interaction between the drill bit and the rock, and the friction between the drill string and the wellbore wall, establishing a comprehensive stick-slip vibration model for the horizontal section. This method considers the friction between the drill string, drill collar, and the wellbore wall, and uses different tool types as the primary criterion for determining the friction coefficient. However, it fails to adequately account for the dynamic changes in the friction coefficient and the random fluctuations of the entire system.

[0005] 3) Patent publication number CN110457866A, titled "Method for Predicting and Reducing Friction Resistance During the Entire Sliding Drilling Process," states that this method divides the joints, calculates the friction resistance at each joint, and obtains the corresponding friction resistance set. This method is effective in obtaining the overall friction resistance, but it does not adequately consider the impact of regional friction resistance variations.

[0006] 4) The invention patent with publication number “CN117057151A” and main title “A method for analyzing the dynamic response of a horizontal drill string under serial oscillation conditions” discloses: calculating the sweep range of each hydraulic oscillator during axial vibration; calculating the overall stiffness matrix, overall load matrix, overall mass matrix and overall damping matrix of the horizontal drill string assembly within the sweep range, and substituting them into the drill string vibration model, and then solving the drill string vibration model after substitution; the overall damping matrix is ​​calculated based on the structural damping, drilling fluid damping and dry friction damping of discrete points, and the one-dimensional model of the horizontal drill string assembly is discretized to obtain discrete points within the sweep range; the equivalent viscous damping force of the discrete point is equivalent to the dry friction damping of the discrete point, but the influence of the friction uncertainty between the drill tool assembly and the well wall is not considered.

[0007] In summary, existing methods consider the contact between the drill string and the wellbore wall when modeling the dynamics of drilling systems. They calculate factors such as the drill string's motion state, wellbore dimensions, and the viscous damping of the drilling fluid. Frictional resistance is derived by calculating the contact force between the drill string and the wellbore wall, while also considering the impact of different damping models. However, with the increasing complexity of wellbore trajectories and wellbore cleaning conditions, the uncertainty of frictional resistance is becoming increasingly prominent. Existing methods do not consider the uncertainty of friction between the drill tool assembly and the wellbore wall. Consequently, they need to improve their ability to effectively apply axial force to the drill bit in the horizontal section of a horizontal well. Therefore, they are not suitable for increasing the drilling speed of horizontal wells under complex conditions.

[0008] Therefore, how to accurately evaluate the impact of friction on drilling performance and overcome the errors caused by friction uncertainty in the evaluation of horizontal section energy transfer efficiency are key issues in calculating drilling efficiency, trajectory extension capacity, etc. during horizontal well drilling. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to address the deficiencies of the existing technology and specifically provide a method, system, electronic device and storage medium for adjusting drilling parameters, as follows:

[0010] 1) In a first aspect, the present invention provides a method for adjusting drilling parameters, the specific technical solution of which is as follows:

[0011] Construct a dynamic analysis model of the drill string used in drilling horizontal wells, and associate the friction uncertainty with the dynamic analysis model;

[0012] During horizontal well drilling, the dynamic analysis model is used to calculate the friction between the drill string and the wellbore wall, as well as the torque of the drill string in real time.

[0013] The horizontal well drilling parameters are adjusted in real time based on the friction between the drill string and the wellbore wall and the torque of the drill string.

[0014] The beneficial effects of the drilling parameter adjustment method provided by the present invention are as follows:

[0015] By constructing the dynamic analysis model considering the friction uncertainty, the friction between the drill string and the well wall of the horizontal well and the torque of the drill string can be more accurately calculated, and the accurate adjustment of the drilling parameters of the horizontal well is further realized.

[0016] On the basis of the above scheme, the drilling parameter adjustment method of the present application can be further improved as follows.

[0017] Further, the process of constructing the dynamic analysis model comprises:

[0018] The friction between the drill string and the well wall is taken as a random force represented by a random friction coefficient, a random field is constructed, and a dynamic analysis model is constructed in combination with the motion equation of the lower drill tool assembly of the drill string.

[0019] Further, the motion equation of the lower drill tool assembly of the drill string is:

[0020]

[0021] wherein, ρ represents the density of the drill string, A represents the cross-sectional area of the drill string, u(x, t) represents the axial displacement of the drill string at any position x at time t, x represents the distance from the drill bit to any position of the drill string, E represents the elastic modulus of the drill string material, f sta (x, t) represents the equivalent force exerted by the upper drill string on the x position of the lower drill tool assembly at time t; f har (x, t) represents the oscillation force generated by the lower drill tool assembly at position x at time t, represents the velocity corresponding to u(x, t), represents the interaction force between the drill bit and the rock, represents the friction between the drill string and the well wall, represents the acceleration corresponding to u(x, t), represents the force associated with the mass of the drill bit, x∈[0, L], L is the length of the lower drill tool assembly, t∈[0, T], T is the total calculation time.

[0022] Further, the dynamic analysis model is: wherein, M represents the mass matrix, C represents the damping matrix, K represents the stiffness matrix, U(t, ξ) represents the random response corresponding to u(x, t), represents: the corresponding random response, represents: the corresponding random response, f sta represents: sta the matrix form corresponding to f Expressed as: the interaction force between the drill bit and the rock under random field conditions, Represents: random friction field.

[0023] 2) In a second aspect, the present invention further provides a drilling parameter adjustment system, the specific technical solution of which is as follows:

[0024] Including model building module, real-time calculation module and parameter adjustment module;

[0025] The model building module is used to: construct a dynamic analysis model of the drill string used in drilling horizontal wells, and the dynamic analysis model is associated with friction uncertainty;

[0026] The real-time calculation module is used to calculate the friction between the drill string and the wellbore wall, as well as the torque of the drill string in real time during the horizontal well drilling process using a dynamic analysis model.

[0027] The parameter adjustment module is used to adjust the horizontal well drilling parameters in real time according to the friction between the drill string and the well wall of the horizontal well and the torque of the drill string.

[0028] Based on the above solution, the drilling parameter adjustment system of the present invention can be further improved as follows.

[0029] Furthermore, the model building module is specifically used to:

[0030] The friction between the drill string and the well wall is regarded as a random force represented by a random friction coefficient, and a random field is constructed. Combined with the motion equation of the lower drilling tool assembly of the drill string, a dynamic analysis model is constructed.

[0031] Furthermore, the motion equation of the lower drilling assembly of the drill string is:

[0032]

[0033] Where ρ represents the density of the drill string, A represents the cross-sectional area of ​​the drill string, u(x,t) represents the axial displacement of any position x on the drill string at time t, x represents the distance from any position on the drill string to the drill bit, E represents the elastic modulus of the drill string material, and f sta (x, t) represents the equivalent force exerted by the upper drill string on the lower drill assembly at position x at time t; f har (x,t) represents the oscillating force generated at the position x of the lower drilling assembly at time t, Indicates: the speed corresponding to u(x,t) (also known as the drill string movement speed), It represents the interaction force between the drill bit and the rock. represents the friction between the drill string and the well wall, represents the acceleration corresponding to u(x,t), represents the force associated with the drill bit mass, x∈[0,L], where L is the length of the bottom drill assembly, and t∈[0,T], where T is the total computation time.

[0034] Furthermore, the dynamic analysis model is: Among them, M represents: mass matrix, C represents: damping matrix, K represents: stiffness matrix, U(t,ξ) represents: random response corresponding to u(x,t), express: The corresponding random response, express: The corresponding random response, f sta Means: f sta The corresponding matrix form is, represents the interaction force between the drill bit and the rock under random field conditions, Represents: random friction field.

[0035] 3) In a third aspect, the present invention further provides an electronic device, comprising a processor coupled to a memory, wherein the memory stores at least one computer program, and the at least one computer program is loaded and executed by the processor so that the electronic device implements any of the above-mentioned methods for adjusting drilling parameters.

[0036] 4) In a fourth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which implements any of the above-mentioned methods for adjusting drilling parameters when executed by a processor.

[0037] It should be noted that the beneficial effects achieved by the technical solutions of the second to fourth aspects of the present invention and the corresponding possible implementation methods can be found in the above-mentioned technical effects of the first aspect and its corresponding possible implementation methods, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments of the present invention:

[0039] Figure 1 A schematic flow chart of a method for adjusting drilling parameters according to an embodiment of the present invention;

[0040] Figure 2 This is the force analysis diagram of the lower drilling assembly;

[0041] Figure 3 is the random distribution of friction coefficient along the drill string;

[0042] Figure 4 It is the drilling efficiency response curve during the drilling process;

[0043] Figure 5 FIG. 1 is a structural schematic diagram of a drilling parameter adjustment system according to an embodiment of the present application;

[0044] Figure 6 FIG. 2 is a structural schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0045] The principles and features of the present application are described below, and the examples are only used to explain the present application, and are not used to limit the scope of the present application.

[0046] The technical solutions of the present application and how the technical solutions solve the above technical problems are described in detail below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0047] As shown in FIG. 1, a drilling parameter adjustment method according to an embodiment of the present application includes the following steps: Figure 1

[0048] S1, constructing a dynamic analysis model of a drill string used when drilling a horizontal well, the dynamic analysis model being associated with friction uncertainty;

[0049] S2, during the drilling of the horizontal well, using the dynamic analysis model to calculate the friction between the drill string and the well wall of the horizontal well and the torque of the drill string in real time;

[0050] S3, adjusting the drilling parameters of the horizontal well in real time according to the friction between the drill string and the well wall of the horizontal well and the torque of the drill string.

[0051] Optionally, in S1, the process of constructing the dynamic analysis model includes:

[0052] The friction between the drill string and the well wall is taken as a random force represented by a random friction coefficient, a random field is constructed, and a dynamic analysis model is constructed in combination with a motion equation of a lower drilling tool assembly of the drill string.

[0053] Optionally, in the above technical solution, the motion equation of the lower drilling tool assembly of the drill string is:

[0054]

[0055] wherein p represents the density of the drill string, A represents the cross-sectional area of the drill string, u(x, t) represents the axial displacement of the drill string at any position x at time t, x represents the distance from any position of the drill string to the drill bit, E represents the elastic modulus of the material of the drill string, f sta (x, t) represents the equivalent force exerted by the upper drill string on the x position of the lower drilling tool assembly at time t; and f har ​(x,t) represents the oscillating force generated at the position x of the lower drilling assembly at time t, Indicates: the speed corresponding to u(x,t) (also known as the drill string movement speed), It represents the interaction force between the drill bit and the rock. Indicates: the friction between the drill string and the well wall, Indicates: the acceleration corresponding to u(x,t), represents the force associated with the drill bit mass, x∈[0,L], where L is the length of the bottom drill assembly, and t∈[0,T], where T is the total computation time.

[0056] Optionally, in the above technical solution, the dynamic analysis model is: Among them, M represents: mass matrix, C represents: damping matrix, K represents: stiffness matrix, U(t,ξ) represents: random response corresponding to u(x,t), express: The corresponding random response, express: The corresponding random response, f sta Means: f sta The corresponding matrix form is, Expressed as: the interaction force between the drill bit and the rock under random field conditions, Represents: random friction field.

[0057] The present invention is described by the following examples:

[0058] S101. Construct the motion equation of the lower drilling assembly:

[0059] like Figure 2 As shown in the figure, the force on the bottom drilling assembly mainly includes the force f exerted by the upper drill string on the bottom drilling assembly. sta , the oscillating force f applied to the drill bit har , the interaction force between the drill bit and the rock f bit , the friction force between the drill string and the well wall f fric , force f related to drill bit mass mass The weight of the bottom drill assembly and the supporting force of the wellbore on the bottom drill assembly are balanced with each other. Therefore, the motion equation of the bottom drill assembly can be expressed as:

[0060]

[0061] Where ρ represents the density of the drill string, A represents the cross-sectional area of ​​the drill string, u(x,t) represents the axial displacement of any position x on the drill string at time t, x represents the distance from any position on the drill string to the drill bit, E represents the elastic modulus of the drill string material, and f sta (x, t) represents the equivalent force exerted by the upper drill string on the lower drill assembly at position x at time t; f har (x,t) represents the oscillating force generated at the position x of the lower drilling assembly at time t, Indicates: the speed corresponding to u(x,t) (also known as the drill string movement speed), It represents the interaction force between the drill bit and the rock. Indicates: the friction between the drill string and the well wall, Indicates: the acceleration corresponding to u(x,t), represents the force associated with the drill bit mass, x∈[0,L], where L is the length of the bottom drill assembly, and t∈[0,T], where T is the total computation time.

[0062] Among them, in the numerical calculation process, f sta The value of (x=L, t=0) must be given in the form of boundary conditions.

[0063] f sta (x,t),f har (x,t), and The following explanation is given:

[0064] 1)f sta (x,t)=F sta δ(x), where F sta It represents the amplitude of the force exerted by the upper drill string on the lower drill assembly, and δ(x) represents substituting x into the Dirac function.

[0065] 2)f har (x,t)=F o sin(ω f t)δ(xL), where F o Indicates: the amplitude of the oscillating force applied to the drill bit, ω f represents the frequency of the oscillating force applied to the drill bit, and δ(xL) represents substituting “xL” into the Dirac function.

[0066] 3) Among them, μ represents: friction coefficient, g represents: acceleration due to gravity, Indicates: Substitute the symbolic function.

[0067] 4) Among them, m bitIndicates: the quality of the drill bit.

[0068] 5) Assume that the interaction force f between the drill bit and the rock is bit and Related, get:

[0069]

[0070] Among them, c1 and c2 are two constants of the interaction between the drill bit and the rock.

[0071] S102. Construct the drill string dynamic equation:

[0072] According to Hamilton's principle, the drill string dynamics equation is established by considering the kinetic energy, potential energy and external work of the lower drill assembly. The drill string dynamics equation is:

[0073]

[0074] Among them, M represents: mass matrix, C represents: damping matrix, K represents: stiffness matrix, u(x,t), Respectively represent the aforementioned physical quantities u(x,t), The corresponding matrix form; f sta 、f har (x,t), Respectively represent the aforementioned physical quantities f sta 、f har (x,t), The corresponding matrix form; u(0,0)=u0, The initial conditions are given by u0 and v0.

[0075] S103. Constructing a dynamic analysis model:

[0076] In real horizontal wells, the irregularities of the wellbore lead to complex contact locations and behaviors between the drill string and the wellbore wall, making the characterization and calculation of friction more difficult. Therefore, the friction between the drill string and the wellbore wall is considered a random force represented by a random friction coefficient. A drill string dynamics model is then established that accounts for the uncertainty of the contact friction between the drill string and the wellbore wall.

[0077] The random parameter ξ is introduced to describe the random friction characteristics between the drill string and the well wall at any position x, so the random field μ(x,ξ) is a set of random parameters from the probability space The set of random variables, where Ω represents the discrete sample space of the space curve formed by the full well drill string, It represents: σ-algebra, P represents probability density:

[0078]

[0079] Then, according to the K-L expansion method (Karhunen-Loeve Expansion), the random field quantity μ(x, ξ) can be expressed as:

[0080]

[0081] wherein μ(x, ξ) represents the friction coefficient based on x and ξ, and ξ represents a random variable corresponding to the position x of the drill string, represents the mean value of μ(x, ξ), and Z k is an independent standard Gaussian random variable satisfying the mean value of 0 and the variance of 1, and λ k represents the eigenvalue of the covariance function, and φ k (x) represents the eigenvector of the covariance function. The covariance function of any two discrete nodes can be expressed as:

[0082] ∫ Γ cov(x i ,x j )φ i (x j )=λ i φ i (x i )

[0083] In the formula, cov(x i ,x j ) is the covariance function of the random field, and the expression is:

[0084]

[0085] In the formula, x i and x j respectively represent the position coordinates of any two discrete nodes along the axial direction of the drill string, and b represents the correlation length describing the uncertainty of the contact friction between the drill string and the well wall.

[0086] At this time, the random friction force per unit length can be expressed as:

[0087]

[0088] Correspondingly, the constructed dynamic analysis model is:

[0089]

[0090] In the formula: U(t, ξ), respectively represent the random responses corresponding to the aforementioned physical quantities u(x, t), ​representing the interaction force between the drill bit and the rock under the random field condition, representing the random friction field.

[0091] S104, in the process of drilling a horizontal well, using a dynamic analysis model to calculate the friction between the drill string and the well wall of the horizontal well, and the torque of the drill string in real time;

[0092] S105, according to the friction between the drill string and the well wall of the horizontal well and the torque of the drill string, real-time adjustment of the horizontal well drilling parameters.

[0093] In one embodiment, the basic parameters: drill string outer diameter D = 0.15m, drill string inner diameter d = 0.1m, simulated drill string length L = 40m, drill string elastic modulus E = 210GPa, drill string material density p = 7850kg / m 3 , drill bit mass m bit = 20kg, constant c1 = 1400N, c2 = 400 representing the interaction between the drill bit and the rock, average friction coefficient correlation length b = 10, vibration frequency w f = 100x2p / 60rad / s, simulation time t = 10s, time step At = 0.0001s, force f sta acting on the lower drill tool assembly = 5.5kN, oscillation force amplitude F o = 550N.

[0094] Based on the constructed dynamic analysis model, combined with the above basic parameters, the calculated friction coefficient distribution between the drill string and the well wall is as shown in Figure 3 It can be seen that the friction coefficient distribution on the drill string has obvious uncertainty and randomness, and the friction coefficient fluctuates in the range of 0.9358~0.1175, which will inevitably lead to the prediction results of the drill string friction under the drilling condition showing obvious uncertainty and randomness.

[0095] Figure 4 representing the response curve of drilling efficiency during drilling, it can be seen that the drilling efficiency presents a fluctuation similar to a sine curve, which is caused by the uncertainty of the friction coefficient between the drill string and the well wall. The uncertain friction causes serious input power loss, and the maximum drilling efficiency is only 0.25.

[0096] The present invention considers the influence of friction uncertainty, regards the friction between the drill string and the well wall as a random force represented by a random friction coefficient, defines a random field, and comprehensively considers friction resistance to significantly improve the effectiveness of the system drill string dynamics simulation and the study of related control problems. The present invention defines the friction between the drill string and the well wall as a random force represented by a random friction coefficient, constructs a random field, analyzes the influence of friction resistance on the system drill string dynamics simulation under different well trajectories, drill tool assemblies, and complex contact conditions, improves the output energy analysis capability, and enhances the rationality of dynamic model construction and the practicality of calculation results. The present invention belongs to drilling exploration and development technology, and specifically relates to a horizontal well drill string dynamics analysis model considering friction uncertainty. The method adopted is to analyze and construct a random friction coefficient under different well types, wellbore structures, and drill tool assembly configurations to solve the problem of friction characterization and calculation. The present invention provides a horizontal well drill string dynamics analysis model considering friction uncertainty, improves the method of friction characterization and calculation, and optimizes the drill string dynamics modeling method by constructing a random field, which significantly helps improve the effectiveness of drilling system simulation and the study of related control problems.

[0097] In the above embodiments, although the steps are numbered S1, S2, etc., these are only specific embodiments given by the present invention. Those skilled in the art may adjust the execution order of S1, S2, etc. according to actual conditions, which is also within the scope of protection of the present invention. It can be understood that in some embodiments, some or all of the above embodiments may be included.

[0098] like Figure 5 As shown, a drilling parameter adjustment system 200 according to an embodiment of the present invention includes a model building module 201, a real-time calculation module 202 and a parameter adjustment module 203;

[0099] The model building module 201 is used to: build a dynamic analysis model of the drill string used when drilling a horizontal well, the dynamic analysis model being associated with friction uncertainty;

[0100] The real-time calculation module 202 is used to calculate the friction between the drill string and the wellbore wall of the horizontal well, as well as the torque of the drill string in real time using a dynamic analysis model during the horizontal well drilling process;

[0101] The parameter adjustment module 203 is used to adjust the horizontal well drilling parameters in real time according to the friction between the drill string and the wellbore of the horizontal well and the torque of the drill string.

[0102] Optionally, in the above technical solution, the model building module 201 is specifically used to:

[0103] The friction between the drill string and the well wall is regarded as a random force represented by a random friction coefficient, and a random field is constructed. Combined with the motion equation of the lower drilling tool assembly of the drill string, a dynamic analysis model is constructed.

[0104] Optionally, in the above technical solution, the motion equation of the lower drilling assembly of the drill string is:

[0105]

[0106] Where ρ represents the density of the drill string, A represents the cross-sectional area of ​​the drill string, u(x,t) represents the axial displacement of any position x on the drill string at time t, x represents the distance from any position on the drill string to the drill bit, E represents the elastic modulus of the drill string material, and f sta (x, t) represents the equivalent force exerted by the upper drill string on the lower drill assembly at position x at time t; f har (x,t) represents the oscillating force generated at the position x of the lower drilling assembly at time t, Indicates: the speed corresponding to u(x,t), It represents the interaction force between the drill bit and the rock. Indicates: the friction between the drill string and the well wall, Indicates: the acceleration corresponding to u(x,t), represents the force associated with the drill bit mass, x∈[0,L], where L is the length of the bottom drill assembly, and t∈[0,T], where T is the total computation time.

[0107] Optionally, in the above technical solution, the dynamic analysis model is: Among them, M represents: mass matrix, C represents: damping matrix, K represents: stiffness matrix, U(t,ξ) represents: random response corresponding to u(x,t), express: The corresponding random response, express: The corresponding random response, f sta Means: f sta The corresponding matrix form is, Expressed as: the interaction force between the drill bit and the rock under random field conditions, Represents: random friction field.

[0108] It should be noted that the beneficial effects of the drilling parameter adjustment system 200 provided in the above embodiment are the same as the beneficial effects of the drilling parameter adjustment method described above, and will not be repeated here. In addition, when implementing the functions of the system provided in the above embodiment, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the system can be divided into different functional modules according to actual conditions to complete all or part of the functions described above. In addition, the system and method embodiments provided in the above embodiment are based on the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0109] Among them, the drilling parameter adjustment system of the present invention can be a computer program (including program code) running in a computer device. For example, the drilling parameter adjustment system of the present invention is an application software that can be used to execute the corresponding steps in the drilling parameter adjustment method of the present invention.

[0110] In some embodiments, the drilling parameter adjustment system of the present invention can be implemented by a combination of software and hardware. As an example, the drilling parameter adjustment system of the present invention can be a processor in the form of a hardware decoding processor, which is programmed to execute the drilling parameter adjustment method of the present invention. For example, the processor in the form of a hardware decoding processor can adopt one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), or other electronic components.

[0111] The modules described in the embodiments of the present invention may be implemented in software or hardware, and the name of a module does not necessarily limit the module itself.

[0112] An electronic device according to an embodiment of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, any one of the above-mentioned methods for adjusting drilling parameters is implemented. That is, an electronic device according to an embodiment of the present invention may include but is not limited to: a processor and a memory; the memory is used to store the computer program; the processor is used to execute the method for adjusting drilling parameters shown in any one of the embodiments of the present invention by calling the computer program.

[0113] In an alternative embodiment, an electronic device is provided, such as Figure 6 As shown, Figure 6 The electronic device 4000 shown includes: a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, for example, via a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004, which can be used for data exchange between the electronic device and other electronic devices, such as data transmission and / or data reception. It should be noted that in actual applications, the number of transceivers 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present invention.

[0114] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. Processor 4001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0115] Bus 4002 may include a path for transmitting information between the above components. Bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. Bus 4002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 In the figure, only one thick line is used to represent the bus 4002, but this does not mean that there is only one bus or one type of bus.

[0116] The memory 4003 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0117] The memory 4003 is used to store application code (computer program) for executing the solution of the present invention, and is controlled by the processor 4001. The processor 4001 is used to execute the application code stored in the memory 4003 to implement the content shown in the above method embodiment.

[0118] Among them, the electronic device can also be a terminal device, and the terminal device can be any terminal device that can install applications and access web pages through applications, including at least one of a smartphone, tablet computer, laptop computer, desktop computer, smart speaker, smart watch, smart TV, and smart car-mounted device.

[0119] It should be noted that Figure 6 The electronic device shown is only an example and should not limit the functions and scope of use of the embodiments of the present invention.

[0120] A computer-readable storage medium according to an embodiment of the present invention stores a computer program, and when the computer program is executed by a processor, any of the above-mentioned methods for adjusting drilling parameters is implemented.

[0121] Alternatively, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, or the like.

[0122] In an example embodiment, a computer program product or computer program is also provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. A processor of an electronic device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to cause the electronic device to perform any of the above-mentioned methods for adjusting a drilling parameter.

[0123] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0124] It should be understood that the flow diagrams and block diagrams in the drawings are presented to illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present application. In this regard, each block in the flow diagrams and block diagrams can represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical functions ("instructions"). It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks can sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flowchart illustrations, and combinations thereof, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or combinations of hardware and software.

[0125] The computer-readable storage medium provided in the embodiments of the present invention may be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or component.

[0126] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device executes the method shown in the above embodiment.

[0127] The above description is merely a preferred embodiment of the present invention and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in the present invention is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned disclosed concepts. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in the present invention.

[0128] It should be noted that the terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects and to define a specific order or precedence. Where appropriate, the order used for similar objects may be interchanged, such that the embodiments of the present application described herein can be implemented in an order other than the order shown or described.

[0129] Those skilled in the art will appreciate that the present invention may be implemented as a system, method, or computer program product. Therefore, the present invention may be implemented in the following forms: entirely in hardware, entirely in software (including firmware, resident software, microcode, etc.), or in a combination of hardware and software, generally referred to herein as a "circuit," "module," or "system." Furthermore, in some embodiments, the present invention may be implemented in the form of a computer program product embodied in one or more computer-readable media containing computer-readable program code.

[0130] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for adjusting drilling parameters, characterized in that: include: Constructing a dynamic analysis model of a drill string used in drilling a horizontal well, the dynamic analysis model being associated with friction uncertainty; During the horizontal well drilling process, the dynamic analysis model is used to calculate in real time the friction between the drill string and the wellbore wall of the horizontal well, as well as the torque of the drill string; The horizontal well drilling parameters are adjusted in real time according to the friction between the drill string and the well wall of the horizontal well and the torque of the drill string.

2. A method for adjusting drilling parameters according to claim 1, characterized in that: The process of constructing the dynamic analysis model includes: The friction force between the drill string and the well wall is used as a random force represented by a random friction coefficient to construct a random field, and the dynamic analysis model is constructed in combination with the motion equation of the lower drilling tool assembly of the drill string.

3. A method for adjusting drilling parameters according to claim 2, characterized in that: The motion equation of the lower drilling assembly of the drill string is: Where ρ represents the density of the drill string, A represents the cross-sectional area of ​​the drill string, u(x,t) represents the axial displacement of any position x on the drill string at time t, x represents the distance from any position on the drill string to the drill bit, E represents the elastic modulus of the drill string material, and f sta (x, t) represents the equivalent force exerted by the upper drill string on the lower drill assembly at position x at time t; f har (x,t) represents the oscillating force generated at the position x of the lower drilling assembly at time t, Indicates: the speed corresponding to u(x,t), It represents the interaction force between the drill bit and the rock. Indicates: the friction between the drill string and the well wall, Indicates: the acceleration corresponding to u(x,t), represents the force associated with the drill bit mass, x∈[0,L], where L is the length of the bottom drill assembly, and t∈[0,T], where T is the total computation time.

4. A method for adjusting drilling parameters according to claim 3, characterized in that: The dynamic analysis model is: Among them, M represents: mass matrix, C represents: damping matrix, K represents: stiffness matrix, U(t,ξ) represents: random response corresponding to u(x,t), express: The corresponding random response, express: The corresponding random response, f sta Means: f sta The corresponding matrix form is, Expressed as: the interaction force between the drill bit and the rock under random field conditions, Represents: random friction field.

5. A drilling parameter adjustment system, characterized in that: Including model building module, real-time calculation module and parameter adjustment module; The model building module is used to: build a dynamic analysis model of a drill string used when drilling a horizontal well, wherein the dynamic analysis model is associated with friction uncertainty; The real-time calculation module is used to calculate the friction between the drill string and the wellbore of the horizontal well and the torque of the drill string in real time using the dynamic analysis model during the horizontal well drilling process; The parameter adjustment module is used to adjust the horizontal well drilling parameters in real time according to the friction between the drill string and the well wall of the horizontal well and the torque of the drill string.

6. A drilling parameter adjustment system according to claim 5, characterized in that: The model building module is specifically used to: The friction force between the drill string and the well wall is used as a random force represented by a random friction coefficient to construct a random field, and the dynamic analysis model is constructed in combination with the motion equation of the lower drilling tool assembly of the drill string.

7. A drilling parameter adjustment system according to claim 6, characterized in that: The motion equation of the lower drilling assembly of the drill string is: Where ρ represents the density of the drill string, A represents the cross-sectional area of ​​the drill string, u(x,t) represents the axial displacement of any position x on the drill string at time t, x represents the distance from any position on the drill string to the drill bit, E represents the elastic modulus of the drill string material, and f sta (x, t) represents the equivalent force exerted by the upper drill string on the lower drill assembly at position x at time t; f har (x,t) represents the oscillating force generated at the position x of the lower drilling assembly at time t, Indicates: the speed corresponding to u(x,t), It represents the interaction force between the drill bit and the rock. Indicates: the friction between the drill string and the well wall, Indicates: the acceleration corresponding to u(x,t), represents the force associated with the drill bit mass, x∈[0,L], where L is the length of the bottom drill assembly, and t∈[0,T], where T is the total computation time.

8. A drilling parameter adjustment system according to claim 7, characterized in that: The dynamic analysis model is: Among them, M represents: mass matrix, C represents: damping matrix, K represents: stiffness matrix, U(t,ξ) represents: random response corresponding to u(x,t), express: The corresponding random response, express: The corresponding random response, f sta Means: f sta The corresponding matrix form is, represents the interaction force between the drill bit and the rock under random field conditions, Represents: random friction field.

9. An electronic device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, a method for adjusting drilling parameters according to any one of claims 1 to 4 is implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for adjusting drilling parameters according to any one of claims 1 to 4 is implemented.

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