A dynamic monitoring method, device, system and storage medium for wellbore trajectory

Abstract

The present application relates to a method, device, system and storage medium for dynamic monitoring of borehole trajectory, the method comprising continuously obtaining the gamma value of the surrounding environment through a window and using the gamma value to generate a gamma value change curve; when two gamma value change curves corresponding to one group of windows both have an amplitude difference, determining the plane where the drill bit travels, recorded as the first plane; constructing two groups of second planes based on the first plane; adjusting the drill bit to a second plane adjacent to the first plane and moving the drill bit along the second plane until an amplitude difference appears in the drill bit; drawing the boundary of the target area according to the direction of the amplitude difference. The method, device, system and storage medium for dynamic monitoring of borehole trajectory disclosed in the present application adjust the trajectory of the drill bit by dividing the area around the drill bit and comparing the difference direction, so that the drill bit can enter the thin reservoir as soon as possible and continue to move in the thin reservoir, so as to improve the drilling rate of the drill bit.

Description

Technical Field

[0001] The present application relates to the field of data processing technology, and in particular to a method, device, system and storage medium for dynamic monitoring of wellbore trajectory. Background Art

[0002] During the exploration of thin reservoirs, it is necessary to determine the relative position of the drill bit and the thin reservoir in real time to prevent the drill bit from leaving the thin reservoir, which would limit the exploration results (failure to find the thin reservoir or incomplete thin reservoir areas). This requires dynamic monitoring of the wellbore trajectory, the purpose of which is to enable the drill bit to enter the thin reservoir as quickly as possible and continue to move in the thin reservoir.

[0003] There are more environmental disturbances in the edge areas of thin reservoirs, and the structure of the edge areas of thin reservoirs is irregular. How to enable the drill bit to enter the thin reservoir as quickly as possible and continue to move in the thin reservoir requires further research. Summary of the invention

[0004] The present application provides a method, device, system and storage medium for dynamically monitoring wellbore trajectory, which adjusts the trajectory of the drill bit by dividing the area around the drill bit and comparing the difference direction, so that the drill bit can enter the thin reservoir as quickly as possible and continue to move in the thin reservoir, so as to improve the drilling rate of the drill bit.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a method for dynamic monitoring of a wellbore trajectory, comprising:

[0007] Continuously obtain the gamma value of the surrounding environment through the window and use the gamma value to generate a gamma value change curve, the number of windows is multiple groups, each group includes two windows, and each window generates a gamma value change curve;

[0008] When the two gamma value change curves corresponding to one group of windows both have amplitude differences, the plane where the drill bit travels is determined and recorded as the first plane;

[0009] Construct two sets of second planes based on the first plane, wherein the first plane is located between the two sets of second planes;

[0010] adjusting the drill bit to a second plane adjacent to the first plane and advancing the drill bit along the second plane until the drill bit has an amplitude difference;

[0011] Draw the boundary of the target region based on the direction of the magnitude difference.

[0012] In a possible implementation manner of the first aspect, when two gamma value change curves corresponding to one group of windows both have amplitude differences, the method further includes determining a boundary surface, and determining the boundary surface includes:

[0013] Determine the curve segment corresponding to the amplitude difference on the residual gamma value variation curve according to the curve segment corresponding to the amplitude difference on the two gamma value variation curves;

[0014] Get the appearance time of the curve segments corresponding to all amplitude differences;

[0015] Determine the generated line segments according to the appearance time of the curve segments corresponding to all the amplitude differences, the line segments are evenly arranged around the axis of the drill bit and the starting points of the line segments correspond to the windows one by one;

[0016] Generates boundary surfaces based on the cutoff points of line segments.

[0017] In a possible implementation manner of the first aspect, the cutoff points of the line segments are all located on the boundary surface or the sum of straight-line distances from the cutoff points of the line segments to the boundary surface is the smallest.

[0018] In a possible implementation manner of the first aspect, the method further includes:

[0019] Adjust the advancing direction of the drill bit to be perpendicular to the boundary surface;

[0020] driving the drill bit to pass through the boundary surface and obtaining a gamma value change curve segment corresponding to the drill bit passing through the boundary surface;

[0021] Get the time point of amplitude change on each gamma value change curve segment;

[0022] The difference of all time points is calculated, and the difference of all time points is within the allowable range, or the angle between the reference boundary surface generated based on all time points and the boundary surface is within the allowable range.

[0023] In a possible implementation manner of the first aspect, the method further includes determining a subtending boundary of the target area, where determining the subtending boundary of the target area includes:

[0024] After driving the drill bit into the target area, it moves on the first plane until the amplitude difference appears again;

[0025] Determine whether the drill bit exits from the top or bottom of the target area;

[0026] Adjust the forward trajectory of the drill bit according to the departure position of the drill bit so that the drill bit moves along the edge of the target area;

[0027] Draw the opposite boundary of the target area according to the movement trajectory of the drill bit.

[0028] In a possible implementation manner of the first aspect, determining whether the drill bit leaves from the top of the target area or from the bottom of the target area includes:

[0029] Select a set of windows located at or near the vertical direction;

[0030] Obtaining corresponding change curve segments on two gamma value change curves of the group of windows;

[0031] Determine the temporal order of the two change curve segments, and determine whether the drill head leaves from the top of the target area or from the bottom of the target area according to the order;

[0032] Among them, the change curve segment appears first in the window located at the top, and the drill head leaves from the top of the target area; the change curve segment appears first in the window located at the bottom, and the drill head leaves from the bottom of the target area.

[0033] In a possible implementation manner of the first aspect, moving the drill bit along an edge of the target area includes:

[0034] A set of windows is selected based on the gamma values ​​of the windows when the drill leaves the target area;

[0035] The drill bit is driven to move continuously so that the gamma value obtained in the first window of the group of windows is greater than the gamma value obtained in the second window, and the difference between the gamma value obtained in the first window and the gamma value of the window when the drill bit leaves the target area is within an allowable range.

[0036] In a second aspect, the present application provides a dynamic monitoring device for a wellbore trajectory, comprising:

[0037] A data acquisition unit, used for continuously acquiring the gamma value of the surrounding environment through a window and generating a gamma value change curve using the gamma value, wherein the number of windows is a plurality of groups, each group includes two windows, and each window generates a gamma value change curve;

[0038] A first determining unit is used to determine the plane where the drill bit travels when two gamma value change curves corresponding to one group of windows both have amplitude differences, and record it as a first plane;

[0039] A plane generating unit, used for constructing two sets of second planes based on the first plane, wherein the first plane is located between the two sets of second planes;

[0040] a direction adjustment unit, which adjusts the drill bit to a second plane adjacent to the first plane and advances the drill bit along the second plane until an amplitude difference appears on the drill bit;

[0041] The boundary generation unit is used to draw the boundary of the target area according to the direction of the amplitude difference.

[0042] In a third aspect, the present application provides a dynamic monitoring system for a wellbore trajectory, the system comprising:

[0043] one or more memories for storing instructions; and

[0044] One or more processors, used to call and run the instructions from the memory to execute the method as described in the first aspect and any possible implementation of the first aspect.

[0045] In a fourth aspect, the present application provides a computer-readable storage medium, the computer-readable storage medium comprising:

[0046] Program, when the program is executed by a processor, the method described in the first aspect and any possible implementation of the first aspect is executed.

[0047] In a fifth aspect, the present application provides a computer program product, comprising program instructions. When the program instructions are executed by a computing device, the method described in the first aspect and any possible implementation of the first aspect is executed.

[0048] In a sixth aspect, the present application provides a chip system, which includes a processor for implementing the functions involved in the above aspects, for example, generating, receiving, sending, or processing the data and / or information involved in the above methods.

[0049] The chip system may be composed of chips, or may include chips and other discrete devices.

[0050] In a possible design, the chip system also includes a memory, which is used to store necessary program instructions and data. The processor and the memory can be decoupled and respectively set on different devices, connected by wired or wireless means, or the processor and the memory can also be coupled on the same device. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic flowchart of the steps of a dynamic monitoring method provided by the present application.

[0052] Figure 2 This is a schematic diagram of the position of a window on a drill bit provided by the present application.

[0053] Figure 3 This is a schematic diagram of the amplitude difference on a gamma value change curve provided by the present application.

[0054] Figure 4 This is a schematic diagram provided by the present application of constructing a second plane based on a first plane.

[0055] Figure 5 This is a comparative schematic diagram of the amplitude difference on different gamma value change curves provided by the present application.

[0056] Figure 6 It is a schematic diagram of a drill bit leaving a target area provided in the present application.

[0057] Figure 7 It is a schematic diagram of a drill bit leaving the top of a target area provided in the present application.

[0058] Figure 8 It is a schematic diagram of a drill bit leaving the bottom of a target area provided by the present application. DETAILED DESCRIPTION

[0059] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.

[0060] This application discloses a dynamic monitoring method for wellbore trajectory, please refer to Figure 1 In some examples, the present application discloses a method for dynamic monitoring of wellbore trajectory, comprising the following steps:

[0061] S101, continuously obtaining the gamma value of the surrounding environment through the window and using the gamma value to generate a gamma value change curve, the number of windows is multiple groups, each group includes two windows, and each window generates a gamma value change curve;

[0062] S102, when two gamma value change curves corresponding to one group of windows both have amplitude differences, determining a plane where the drill bit travels, and recording it as a first plane;

[0063] S103, constructing two groups of second planes based on the first plane, where the first plane is located between the two groups of second planes;

[0064] S104, adjusting the drill bit to a second plane adjacent to the first plane and moving the drill bit along the second plane until an amplitude difference appears on the drill bit;

[0065] S105, drawing the boundary of the target area according to the direction of the amplitude difference.

[0066] The dynamic monitoring method of the borehole trajectory disclosed in the present application is applied to a drill bit carrying a drilling gamma probe tube, which has multiple windows, such as Figure 2 As shown, during the drilling process, the orientation of the window remains unchanged. The number of windows is multiple groups, each group includes two windows.

[0067] A gamma value variation curve can be generated through each window. The gamma value variation curve is a curve composed of multiple current values ​​converted after the gamma rays in the surrounding environment enter the drilling gamma probe through the window and are processed by the internal crystal and circuit.

[0068] In step S101, the gamma value of the surrounding environment is continuously obtained through the window and the gamma value change curve is generated using the gamma value. When the drill bit is moving forward, when the two gamma value change curves corresponding to one group of windows have an amplitude difference ( Figure 3As shown, the amplitude difference refers to an obvious decrease in the value on the gamma value change curve, corresponding to a line segment similar to a slant line), the plane where the drill bit travels is determined and the plane where the drill bit travels is recorded as the first plane.

[0069] The difference in amplitude between the two gamma value change curves corresponding to a group of windows means that the gamma ray intensity in the surrounding environment of the drill bit is inconsistent. The inconsistent gamma ray intensity indicates that the surrounding environment has changed. For example, when the drill bit is close to the layer surface, a high radiation area or a low radiation area appears near the drill bit. At this time, the surrounding environment of the drill bit needs to be confirmed in order to increase the drilling rate.

[0070] At this time, the plane where the drill bit travels is determined and recorded as the first plane, which is the content in step S102. The obtained first plane is located on the plane where a group of windows corresponding to the two gamma value change curves used are located.

[0071] In step S103, two sets of second planes are constructed based on the first plane. Figure 4 , the first plane is located between the two sets of second planes. Then in S104, the drill bit is adjusted to a second plane adjacent to the first plane and the drill bit is advanced along the second plane until an amplitude difference appears on the drill bit, and then the drill bit is adjusted to the next second plane and the drill bit is advanced along the second plane until an amplitude difference appears on the drill bit.

[0072] These second planes will all be used until no amplitude difference occurs at the drill bit when the drill bit advances along the second plane, which means that the drill bit will not intersect the target area.

[0073] Finally, in S105, the boundary of the target area is drawn according to the direction of the amplitude difference, and the drawing method is to sequentially connect the points where the amplitude difference occurs. The inclined directions of the boundaries of two points (the positions where the drill bit arrives) with the same amplitude difference direction are consistent, and the inclined directions of the boundaries of two points (the positions where the drill bit arrives) with opposite amplitude difference directions are opposite.

[0074] In the above manner, when an amplitude difference is found, the area where the amplitude difference is located can be determined to determine whether there is a reservoir in the area. If the boundary of the target area is very short or very irregular, it means that the probability of the existence of a reservoir is very low, otherwise it means that the probability of the existence of a reservoir is very high.

[0075] In some examples, when two gamma value change curves corresponding to one group of windows have amplitude differences, it is also necessary to determine the boundary surface, and the specific method is as follows:

[0076] S201, determining a curve segment corresponding to the amplitude difference on the residual gamma value change curve according to the curve segments corresponding to the amplitude difference on the two gamma value change curves;

[0077] S202, obtaining the appearance time of the curve segments corresponding to all the amplitude differences;

[0078] S203, determining a generated line segment according to the appearance time of the curve segments corresponding to all the amplitude differences, the line segments are evenly arranged around the axis of the drill bit and the starting points of the line segments correspond to the windows one by one;

[0079] S204: Generate a boundary surface according to the cutoff point of the line segment.

[0080] In step S201 to step S204, the curve segment corresponding to the amplitude difference will first be determined on the remaining gamma value change curve based on the curve segments corresponding to the amplitude difference on the two gamma value change curves. This is because when the drill bit enters the next area, it means that all windows will also enter the next area. At this time, amplitude differences will appear on the gamma value change curves corresponding to all windows, but the values ​​of the amplitude differences are not the same.

[0081] Based on this, the appearance time of the curve segments corresponding to all amplitude differences is obtained ( Figure 5 There is a distance between the three parallel dotted lines, and this distance represents the different appearance times) and then the generated line segments are determined according to the appearance times of the curve segments corresponding to all the amplitude differences. The starting points of the line segments are all located on the same plane, but the end points are different. Finally, the boundary surface is generated according to the end points of the line segments. The specific method is that the end points of the line segments are all located on the boundary surface or the sum of the straight-line distances from the end points of the line segments to the boundary surface is the smallest.

[0082] For the line segments, it is required that the line segments are evenly arranged around the axis of the drill bit and the starting points of the line segments correspond one to one with the windows.

[0083] Furthermore, the following contents are added:

[0084] S301, adjusting the advancing direction of the drill bit to be perpendicular to the boundary surface;

[0085] S302, driving the drill bit to pass through the boundary surface and obtaining a gamma value change curve segment corresponding to the drill bit passing through the boundary surface;

[0086] S303, obtaining the time point of amplitude change on each gamma value change curve segment;

[0087] S304, calculating the difference of all time points, the difference of all time points is within the allowable range, or the angle between the reference boundary surface generated based on all time points and the boundary surface is within the allowable range.

[0088] The contents of step S301 to step S304 are to verify the boundary surface obtained in step S201 to step S204 by adjusting the advancing direction of the drill bit. The specific method is that after adjusting the advancing direction of the drill bit, an actual boundary surface is calculated based on the data obtained during the advancing process of the drill bit. The difference between the actual boundary surface and the calculated boundary surface at all time points needs to be within the allowable range, or the angle between the reference boundary surface generated based on all time points and the boundary surface needs to be within the allowable range.

[0089] Furthermore, it also includes determining the opposite boundary of the target area. The purpose of determining the opposite boundary of the target area is to determine the volume of the target area, because a target area with a small volume has no mining value. The specific method of determining the opposite boundary of the target area is as follows:

[0090] S401, driving the drill bit to enter the target area and move on the first plane until the amplitude difference appears again;

[0091] S402, determining whether the drill bit leaves the target area from the top or the bottom;

[0092] S403, adjusting the forward trajectory of the drill bit according to the departure position of the drill bit, so that the drill bit moves along the edge of the target area;

[0093] S404: Draw the opposite boundary of the target area according to the movement trajectory of the drill bit.

[0094] In step S401 to step S404, the drill bit is first driven to enter the target area and then move on the first plane until an amplitude difference appears again, such as Figure 6 As shown, it means that the drill bit has left the target area and reached a point on the opposite boundary of the target area. Then it is necessary to determine whether the drill bit leaves from the top or the bottom of the target area, because only based on this can it be determined how to adjust the direction of the subsequent drill bit.

[0095] Then, the forward trajectory of the drill bit is adjusted according to the departure position of the drill bit, so that the drill bit moves along the edge of the target area, and finally the opposite boundary of the target area is drawn according to the movement trajectory of the drill bit.

[0096] The specific method to determine whether the drill head leaves the top or bottom of the target area is:

[0097] Select a set of windows located at or near the vertical direction;

[0098] Obtaining corresponding change curve segments on two gamma value change curves of the group of windows;

[0099] Determine the temporal order of the two change curve segments, and determine whether the drill head leaves from the top of the target area or from the bottom of the target area according to the order;

[0100] The change curve segment first appears in the upper window, and the drill head leaves the top of the target area. Figure 7 ; The change curve segment first appears in the lower window, and the drill head leaves the bottom of the target area. Figure 8 .

[0101] The specific way to move the drill bit along the edge of the target area is:

[0102] S501, selecting a group of windows according to the gamma values ​​of the windows when the drill head leaves the target area;

[0103] S502, driving the drill to move continuously, so that the gamma value obtained in the first window of the group of windows is greater than the gamma value obtained in the second window, and the difference between the gamma value obtained in the first window and the gamma value of the window when the drill leaves the target area is within an allowable range.

[0104] The contents of step S501 and step S502 determine the drill position by specific gamma values. There is an obvious difference in the gamma values ​​between the target area and the surrounding environment of the target area. Generally, the influence distance of gamma rays underground is about 0.6-1 meter. Therefore, the drill can be moved along the edge of the target area by the different gamma values ​​fed back by the two windows.

[0105] At this time, it is necessary to ensure that the difference between the gamma value obtained in the first window and the gamma value of the window when the drill bit leaves the target area is within the allowable range. There are two allowable ranges, namely 0.9-1.0 and 1.0-1.1.

[0106] The present application also provides a dynamic monitoring device for a wellbore trajectory, comprising:

[0107] A data acquisition unit, used for continuously acquiring the gamma value of the surrounding environment through a window and generating a gamma value change curve using the gamma value, wherein the number of windows is a plurality of groups, each group includes two windows, and each window generates a gamma value change curve;

[0108] A first determining unit is used to determine the plane where the drill bit travels when two gamma value change curves corresponding to one group of windows both have amplitude differences, and record it as a first plane;

[0109] A plane generating unit, used for constructing two sets of second planes based on the first plane, wherein the first plane is located between the two sets of second planes;

[0110] a direction adjustment unit, which adjusts the drill bit to a second plane adjacent to the first plane and advances the drill bit along the second plane until an amplitude difference appears on the drill bit;

[0111] The boundary generation unit is used to draw the boundary of the target area according to the direction of the amplitude difference.

[0112] Furthermore, it also includes:

[0113] A first acquisition unit, configured to determine a curve segment corresponding to the amplitude difference on the residual gamma value variation curve according to the curve segments corresponding to the amplitude difference on the two gamma value variation curves;

[0114] A second acquisition unit is used to obtain the appearance time of the curve segments corresponding to all the amplitude differences;

[0115] A first processing unit is used to determine and generate line segments according to the appearance time of the curve segments corresponding to all the amplitude differences, the line segments are evenly arranged around the axis of the drill bit and the starting points of the line segments correspond to the windows one by one;

[0116] The second processing unit is used to generate a boundary surface according to the cutoff point of the line segment.

[0117] Furthermore, the cut-off points of the line segments are all located on the boundary surface or the sum of the straight-line distances from the cut-off points of the line segments to the boundary surface is the smallest.

[0118] Furthermore, it also includes:

[0119] An adjustment unit, used for adjusting the advancing direction of the drill bit to be perpendicular to the boundary surface;

[0120] A first driving unit, used for driving the drill bit to pass through the boundary surface and obtaining a gamma value change curve segment corresponding to the drill bit passing through the boundary surface;

[0121] A third acquisition unit is used to obtain a time point of amplitude change on each gamma value change curve segment;

[0122] The third processing unit is used to calculate the difference of all time points, and the difference of all time points is within the allowable range, or the angle between the reference boundary surface generated based on all time points and the boundary surface is within the allowable range.

[0123] Furthermore, it also includes:

[0124] A second driving unit is used to drive the drill bit to move on the first plane after entering the target area until the amplitude difference appears again;

[0125] a second determination unit, configured to determine whether the drill head leaves the target area from the top or the bottom;

[0126] A trajectory adjustment unit, used to adjust the forward trajectory of the drill bit according to the departure position of the drill bit, so that the drill bit moves along the edge of the target area;

[0127] The boundary drawing unit is used to draw the opposite boundary of the target area according to the moving trajectory of the drill bit.

[0128] Furthermore, it also includes:

[0129] A first selection unit, used to select a group of windows located at or near a vertical direction;

[0130] A fourth acquisition unit, used for acquiring corresponding change curve segments on two gamma value change curves of the group of windows;

[0131] a second determining unit, configured to determine a temporal order of the two change curve segments, and determine whether the drill head leaves from the top or the bottom of the target area according to the order;

[0132] Among them, the change curve segment appears first in the window located at the top, and the drill head leaves from the top of the target area; the change curve segment appears first in the window located at the bottom, and the drill head leaves from the bottom of the target area.

[0133] Furthermore, it also includes:

[0134] a second selection unit, for selecting a group of windows according to the gamma values ​​of the windows when the drill head leaves the target area;

[0135] The third driving unit is used to drive the drill to move continuously, so that the gamma value obtained in the first window of the group of windows is greater than the gamma value obtained in the second window, and the difference between the gamma value obtained in the first window and the gamma value of the window when the drill leaves the target area is within an allowable range.

[0136] In one example, the unit in any of the above devices can be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASICs), or, one or more digital signal processors (DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.

[0137] For another example, when the units in the device can be implemented in the form of a processing element scheduling program, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0138] Various objects such as various messages / information / equipment / network elements / systems / devices / actions / operations / processes / concepts that may appear in this application are named. It can be understood that these specific names do not constitute a limitation on the relevant objects. The names assigned may change with factors such as scenarios, contexts or usage habits. The understanding of the technical meaning of the technical terms in this application should be mainly determined from the functions and technical effects embodied / executed in the technical scheme.

[0139] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0140] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0141] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0142] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0143] It should also be understood that in various embodiments of the present application, the first, second, etc. are only used to indicate that multiple objects are different. For example, the first time window and the second time window are only used to indicate different time windows. They should not have any impact on the time window itself, and the first, second, etc. mentioned above should not impose any limitations on the embodiments of the present application.

[0144] It should also be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0145] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a computer-readable storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned computer-readable storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0146] The present application also provides a dynamic monitoring system for wellbore trajectory, the system comprising:

[0147] one or more memories for storing instructions; and

[0148] One or more processors are used to call and run the instructions from the memory to execute the method as described above.

[0149] The present application also provides a computer program product, which includes instructions. When the instructions are executed, the dynamic monitoring system performs operations of the dynamic monitoring system corresponding to the above method.

[0150] The present application also provides a chip system, which includes a processor for implementing the functions involved in the above content, such as generating, receiving, sending, or processing the data and / or information involved in the above method.

[0151] The chip system may be composed of chips, or may include chips and other discrete devices.

[0152] The processor mentioned in any of the above places can be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for executing programs for controlling the above-mentioned feedback information transmission method.

[0153] In a possible design, the chip system also includes a memory, which is used to store necessary program instructions and data. The processor and the memory can be decoupled and respectively set on different devices, connected by wire or wireless means to support the chip system to implement various functions in the above embodiments. Alternatively, the processor and the memory can also be coupled on the same device.

[0154] Optionally, the computer instructions are stored in a memory.

[0155] Optionally, the memory is a storage unit within the chip, such as a register, a cache, etc. The memory can also be a storage unit within the terminal located outside the chip, such as a ROM or other types of static storage devices that can store static information and instructions, RAM, etc.

[0156] It can be understood that the memory in the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories.

[0157] The non-volatile memory may be a ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory.

[0158] The volatile memory may be a RAM, which is used as an external cache. There are many different types of RAM, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct memory bus RAM.

[0159] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for dynamic monitoring of wellbore trajectory, characterized in that: include: Continuously obtain the gamma value of the surrounding environment through the window and use the gamma value to generate a gamma value change curve, the number of windows is multiple groups, each group includes two windows, and each window generates a gamma value change curve; When the two gamma value change curves corresponding to one group of windows both have amplitude differences, the plane where the drill bit travels is determined and recorded as the first plane; Construct two sets of second planes based on the first plane, wherein the first plane is located between the two sets of second planes; adjusting the drill bit to a second plane adjacent to the first plane and advancing the drill bit along the second plane until the drill bit has an amplitude difference; Draw the boundary of the target area according to the direction of the amplitude difference; When the two gamma value change curves corresponding to one group of windows both have amplitude differences, it also includes determining a boundary surface, and determining the boundary surface includes: Determine the curve segment corresponding to the amplitude difference on the residual gamma value variation curve according to the curve segment corresponding to the amplitude difference on the two gamma value variation curves; Get the appearance time of the curve segments corresponding to all amplitude differences; Determine the generated line segments according to the appearance time of the curve segments corresponding to all the amplitude differences, the line segments are evenly arranged around the axis of the drill bit and the starting points of the line segments correspond to the windows one by one; Generate boundary surface according to the cutoff point of line segment; Also includes: Adjust the forward direction of the drill bit to be perpendicular to the boundary surface; driving the drill bit to pass through the boundary surface and obtaining a gamma value change curve segment corresponding to the drill bit passing through the boundary surface; Get the time point of amplitude change on each gamma value change curve segment; The difference of all time points is calculated, and the difference of all time points is within the allowable range, or the angle between the reference boundary surface generated based on all time points and the boundary surface is within the allowable range.

2. The dynamic monitoring method of wellbore trajectory according to claim 1, characterized in that: The cut-off points of the line segments are all located on the boundary surface or the sum of the straight-line distances from the cut-off points of the line segments to the boundary surface is the smallest.

3. The dynamic monitoring method of wellbore trajectory according to claim 1 or 2, characterized in that: The method further includes determining the opposite boundary of the target area. Determining the opposite boundary of the target area includes: After driving the drill bit into the target area, it moves on the first plane until the amplitude difference appears again; Determine whether the drill bit exits from the top or bottom of the target area; Adjust the forward trajectory of the drill bit according to the departure position of the drill bit so that the drill bit moves along the edge of the target area; Draw the opposite boundary of the target area according to the movement trajectory of the drill bit.

4. The dynamic monitoring method of wellbore trajectory according to claim 3, characterized in that: Determining whether the drill bit exits from the top or bottom of the target area involves: Select a set of windows located at or near the vertical direction; Obtaining corresponding change curve segments on two gamma value change curves of the group of windows; Determine the temporal order of the two change curve segments, and determine whether the drill head leaves from the top of the target area or from the bottom of the target area according to the order; Among them, the change curve segment appears first in the window located at the top, and the drill head leaves from the top of the target area; the change curve segment appears first in the window located at the bottom, and the drill head leaves from the bottom of the target area.

5. The dynamic monitoring method of wellbore trajectory according to claim 3, characterized in that: Moving the drill bit along the edge of the target area involves: A set of windows is selected based on the gamma values ​​of the windows when the drill leaves the target area; The drill bit is driven to move continuously so that the gamma value obtained in the first window of the group of windows is greater than the gamma value obtained in the second window, and the difference between the gamma value obtained in the first window and the gamma value of the window when the drill bit leaves the target area is within an allowable range.

6. A dynamic monitoring device for wellbore trajectory, characterized in that: include: A data acquisition unit, used for continuously acquiring the gamma value of the surrounding environment through a window and generating a gamma value change curve using the gamma value, wherein the number of windows is a plurality of groups, each group includes two windows, and each window generates a gamma value change curve; A first determining unit is used to determine the plane where the drill bit travels when two gamma value change curves corresponding to one group of windows both have amplitude differences, and record it as a first plane; A plane generating unit, used for constructing two sets of second planes based on the first plane, wherein the first plane is located between the two sets of second planes; a direction adjustment unit, which adjusts the drill bit to a second plane adjacent to the first plane and advances the drill bit along the second plane until an amplitude difference appears on the drill bit; A boundary generation unit, used for drawing the boundary of the target area according to the direction of the amplitude difference; A first acquisition unit, configured to determine a curve segment corresponding to the amplitude difference on the residual gamma value variation curve according to the curve segments corresponding to the amplitude difference on the two gamma value variation curves; A second acquisition unit is used to obtain the appearance time of the curve segments corresponding to all the amplitude differences; A first processing unit is used to determine and generate line segments according to the appearance time of the curve segments corresponding to all the amplitude differences, the line segments are evenly arranged around the axis of the drill bit and the starting points of the line segments correspond to the windows one by one; A second processing unit, configured to generate a boundary surface according to the cutoff point of the line segment; An adjustment unit, used for adjusting the advancing direction of the drill bit to be perpendicular to the boundary surface; A first driving unit, used for driving the drill bit to pass through the boundary surface and obtaining a gamma value change curve segment corresponding to the drill bit passing through the boundary surface; A third acquisition unit is used to obtain a time point of amplitude change on each gamma value change curve segment; The third processing unit is used to calculate the difference of all time points, and the difference of all time points is within the allowable range, or the angle between the reference boundary surface generated based on all time points and the boundary surface is within the allowable range.

7. A dynamic monitoring system for wellbore trajectory, characterized in that: The system comprises: one or more memories for storing instructions; and One or more processors, configured to call and execute the instructions from the memory to perform the method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that: The computer readable storage medium comprises: The program, when the program is executed by a processor, the method according to any one of claims 1 to 5 is executed.

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