A dynamic real-time imaging method, gamma probe and well logging instrument

Abstract

The present application relates to a dynamic real-time imaging method, a gamma probe and a logging instrument. The imaging method includes continuously acquiring the gamma value of the surrounding environment and generating a gamma value change curve during horizontal advancement or inclined advancement. When continuously acquiring the gamma value of the surrounding environment, the number of acquisition windows is multiple and the orientation of each acquisition window remains unchanged; determining the formation change according to the waveform change of one of the gamma value change curves; determining the formation change and the formation interface using the waveform change of the remaining gamma value change curves; and drawing an image based on the travel route according to the obtained formation interface. The dynamic real-time imaging method, gamma probe and logging instrument disclosed in the present application discover and determine the formation interface by dynamically analyzing and mutually verifying the collected data, so as to improve the drilling rate.

Description

Technical Field

[0001] The present application relates to the technical field of data processing, and in particular to a dynamic real-time imaging method, a gamma probe and a well logging instrument. Background Art

[0002] Ordinary natural gamma instruments, due to the structure of the instrument, receive natural gamma rays from the gamma rays of the formations around the detector, which make an average contribution to the amplitude of the logging curve. When ordinary natural gamma is used for geo-steering, the gamma value can be used to determine whether the drill bit has entered or left the reservoir, but it is impossible to accurately determine whether the drill bit has entered or left the reservoir from above or below the reservoir, which greatly increases the difficulty of adjusting the drill bit. In complex formations, the reservoir is often lost, which greatly reduces the drilling rate, especially when exploring thin and complex reservoirs.

[0003] In the exploitation of thin oil layers, shale gas, and coalbed methane, in order to maximize the drilling rate, it is necessary to dynamically display the images on the forward route so that the staff can adjust the drilling route in time to enter or discover the reservoir as quickly as possible. How to process and display the collected data is an important research topic. Summary of the invention

[0004] The present application provides a dynamic real-time imaging method, a gamma probe and a logging instrument, which discover and determine the formation interface by dynamically analyzing and mutually verifying the collected data, so as to improve the drilling rate.

[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 dynamic real-time imaging method, comprising:

[0007] In the process of horizontal or oblique advancement, the gamma value of the surrounding environment is continuously acquired and a gamma value change curve is generated. When the gamma value of the surrounding environment is continuously acquired, the number of acquisition windows is multiple and the direction of each acquisition window remains unchanged;

[0008] Determine the formation change according to the waveform change of one of the gamma value change curves;

[0009] Using the waveform change of the residual gamma value change curve to determine the formation change and the formation interface;

[0010] An image based on the travel route is drawn based on the obtained stratigraphic interface.

[0011] In a possible implementation manner of the first aspect, determining the formation change according to the waveform change of one of the gamma value change curves includes:

[0012] Get the slope change point of the gamma value change curve;

[0013] From the time when the slope change point appears, the change trend of the subsequent gamma value change curve is tracked;

[0014] When the values ​​of the subsequent gamma value change curves are stable or fluctuate within a range, it is determined that the formation has changed.

[0015] In a possible implementation manner of the first aspect, when a subsequent gamma value variation curve fluctuates within a range, the method further includes:

[0016] Obtaining a portion of the curve at a corresponding position on the residual gamma value variation curve;

[0017] comparing the similarity between the subsequent gamma value change curve and the partial curves at corresponding positions on the remaining gamma value change curve;

[0018] When the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve meets the requirement, it is confirmed that the subsequent gamma value change curve has range fluctuation.

[0019] In a possible implementation of the first aspect, comparing the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve includes moving the subsequent gamma value change curve or the partial curve at the corresponding position on the remaining gamma value change curve on the timeline.

[0020] In a possible implementation manner of the first aspect, the method further includes:

[0021] When the subsequent gamma value change curve or the part of the curve at the corresponding position on the remaining gamma value change curve is moved on the time line, the stratigraphic interface is also constructed according to the position of the slope change point of each gamma value change curve;

[0022] The forward route is adjusted according to the constructed stratigraphic interface and the stratigraphic interface is confirmed. After the stratigraphic interface is confirmed, the time difference of the position of the slope change point of each gamma value change curve should be within the allowable range.

[0023] In a possible implementation manner of the first aspect, the step further includes determining a departure direction of the forward process, where determining the departure direction of the forward process includes:

[0024] Selecting two windows and obtaining gamma value change curves of the two windows, which are respectively recorded as a first gamma value change curve and a second gamma value change curve;

[0025] intercepting a changing portion of the first gamma value changing curve and recording it as a first changing curve;

[0026] intercepting a corresponding change portion of the second gamma value change curve and recording it as a second change curve;

[0027] Putting the first change curve and the second change curve into the same coordinate system and moving the first change curve so that the first change curve and the second change curve overlap;

[0028] Calculating the forward distance according to the forward speed and verifying that the difference between the forward distance and the moving distance of the first change curve is within an allowable range;

[0029] The departure direction is determined according to the moving direction and the advancing direction of the first change curve. When the moving direction and the advancing direction of the first change curve are opposite, the departure direction is away from the top surface of the reservoir. When the moving direction and the advancing direction of the first change curve are the same, the departure direction is away from the bottom surface of the reservoir.

[0030] In a possible implementation of the first aspect, a stratigraphic interface away from the reservoir is constructed, and an allowable range of a difference between an advancing distance and a moving distance of the first variation curve is corrected according to an angle between the advancing direction and the constructed stratigraphic interface.

[0031] In a second aspect, the present application provides a dynamic real-time imaging device, comprising:

[0032] A first data acquisition unit, used for continuously acquiring the gamma value of the surrounding environment and generating a gamma value change curve during horizontal or inclined forward movement, wherein when continuously acquiring the gamma value of the surrounding environment, there are multiple acquisition windows and the direction of each acquisition window remains unchanged;

[0033] A first determining unit, configured to determine a formation change according to a waveform change of one of the gamma value change curves;

[0034] A second determination unit is used to determine the formation change and the formation interface by using the waveform change of the residual gamma value change curve;

[0035] The image drawing unit is used to draw an image based on the travel route according to the obtained stratum interface.

[0036] In a third aspect, the present application provides an azimuth gamma probe, the azimuth gamma probe comprising:

[0037] one or more memories for storing instructions; and

[0038] 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.

[0039] In a fourth aspect, the present application provides a well logging instrument, comprising the azimuth gamma probe as described in the second aspect.

[0040] In a fifth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium comprises:

[0041] 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.

[0042] In a sixth 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.

[0043] In a seventh aspect, the present application provides a chip system comprising 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.

[0044] The chip system may be composed of chips, or may include chips and other discrete devices.

[0045] 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

[0046] Figure 1 It is a schematic flowchart of the steps of a dynamic real-time imaging method provided in this application.

[0047] Figure 2 This is a schematic diagram of the distribution of windows on a drill bit provided by the present application.

[0048] Figure 3 It is a schematic diagram of a change line provided in this application.

[0049] Figure 4 It is a schematic diagram of another variation line provided in this application.

[0050] Figure 5 It is a schematic diagram of a slope change point provided in this application.

[0051] Figure 6 It is a schematic diagram of the movement of a portion of a curve at a corresponding position on a gamma value change curve or a residual gamma value change curve provided by the present application.

[0052] Figure 7 The present application provides a schematic diagram of a drill bit leaving the top surface of a reservoir.

[0053] Figure 8 The present application provides a schematic diagram of a drill bit leaving the bottom surface of a reservoir. DETAILED DESCRIPTION

[0054] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.

[0055] This application discloses a dynamic real-time imaging method, see Figure 1 The dynamic real-time imaging method disclosed in the present application comprises the following steps:

[0056] S101, during horizontal or oblique moving, continuously acquiring a gamma value of the surrounding environment and generating a gamma value change curve, when continuously acquiring the gamma value of the surrounding environment, the number of acquisition windows is multiple and the direction of each acquisition window remains unchanged;

[0057] S102, determining a formation change according to a waveform change of one of the gamma value change curves;

[0058] S103, determining formation changes and formation interfaces using waveform changes of the residual gamma value change curve;

[0059] S104, drawing an image based on the travel route according to the obtained stratum interface.

[0060] First of all, it should be explained that the dynamic real-time imaging method disclosed in the present application is applied to the horizontal or inclined advancement of the drill bit, and is mainly used to explore thin reservoirs. The structural characteristics of thin reservoirs are that the size in the longitudinal direction is small. When the drill bit maintains horizontal or inclined advancement, it is easy to offset the thin reservoir or directly penetrate the thin reservoir.

[0061] From the perspective of the drill bit, the dynamic real-time imaging method disclosed in this application needs to be implemented with the help of a while-drilling gamma probe, which is deployed in the front of the drill bit and continuously collects the gamma value (radiation intensity) in the surrounding environment as the drill bit moves forward. By analyzing the gamma value, a dynamic real-time image of the drill bit during its advancement can be obtained.

[0062] In general, in step S101, during the horizontal or inclined advancement, the gamma value of the surrounding environment is continuously acquired and a gamma value variation curve is generated. The gamma value variation curve represents the radiation intensity of the surrounding environment at different positions. There are multiple acquisition windows on the drill bit, such as Figure 2 As shown, the acquisition windows are evenly arranged around the axis of the drill bit, and the orientation of each acquisition window remains unchanged.

[0063] In step S102, the formation change is determined according to the waveform change of one of the gamma value change curves. The waveform change of the gamma value change curve here refers to a significant change in the amplitude of the gamma value change curve, such as an increase or decrease. Figure 3 and Figure 4 , and there is also a corresponding change line for this amplitude change, which is a line segment that is approximately a diagonal line.

[0064] In step S103, the waveform change of the residual gamma value change curve is used to determine the formation change and the formation interface. The purpose of using the waveform change of the residual gamma value change curve to determine the formation change is to ensure the authenticity of the gamma value change curve response.

[0065] It should be understood that during the drilling process, there are many complex situations and there are also a lot of interferences in the surrounding environment, so it is impossible to guarantee that the waveform change of the gamma value change curve is accurate. Therefore, in this application, the waveform change of the residual gamma value change curve is used to determine the formation change.

[0066] After the formation change is determined, the formation interface will be determined. The formation interface refers to the interface between two different material layers. Finally, in step S104, an image based on the travel route is drawn according to the obtained formation interface.

[0067] The basic content of image expression is composed of multiple stratigraphic interfaces. Any two adjacent stratigraphic interfaces represent the same substance or substances with similar exploration indicators. The exploration indicators are specifically determined by the sensors carried on the drill bit.

[0068] When a formation interface appears, the staff can quickly determine the changes in the drill bit's environment and determine whether the drill bit's route needs to be adjusted. For example, if the drill bit enters a reservoir, leaves a reservoir, or finds a suspicious area, the drill bit's direction of travel can be adjusted in a timely manner.

[0069] In one example, the specific method of determining the formation change according to the waveform change of one of the gamma value change curves is as follows:

[0070] S201, obtaining a slope change point of a gamma value change curve;

[0071] S202, tracking the change trend of the subsequent gamma value change curve from the time when the slope change point appears;

[0072] S203: When the value of the subsequent gamma value change curve is stable or fluctuates within a range, it is determined that the formation has changed.

[0073] In step S201 to step S203, the slope change point of the gamma value change curve is first obtained. Figure 5 , the slope change point is the intersection of two gamma value change curve segments on the gamma value change curve, and the amplitudes of the two gamma value change curve segments are different.

[0074] The slope change point is determined by first determining two gamma value change curve segments, and then taking the intersection of the two gamma value change curve segments as the slope change point. Then, from the time when the slope change point appears, the change trend of the subsequent gamma value change curve is tracked. When the value of the subsequent gamma value change curve is stable or fluctuates within a range, it is determined that the formation has changed.

[0075] Stable values ​​indicate that the geology of the next stratum entered is relatively balanced; fluctuations in the range indicate that the geology of the next stratum entered is unbalanced and contains a variety of substances.

[0076] When the subsequent gamma value change curve fluctuates, it is also necessary to use the following method to handle it:

[0077] S301, obtaining a partial curve at a corresponding position on the residual gamma value variation curve;

[0078] S302, comparing the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve;

[0079] S303: When the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve meets the requirement, it is determined that the subsequent gamma value change curve has range fluctuation.

[0080] In steps S301 to S303, the residual gamma value change curve is used to verify the content in steps S201 to S203, in order to ensure the accuracy of the content in steps S201 to S203. When comparing the similarity of the subsequent gamma value change curve with the partial curve at the corresponding position on the residual gamma value change curve, please refer to Figure 6 , the arrow in the figure indicates the moving direction, and also includes moving the subsequent gamma value change curve on the timeline or the partial curve at the corresponding position on the remaining gamma value change curve.

[0081] The purpose of the movement is that the forward route of the drill bit may not be perpendicular to the formation interface. At this time, for different gamma value change curves, the time when the corresponding slope change point appears is different. Therefore, it is necessary to move the subsequent gamma value change curve or the part of the curve at the corresponding position on the remaining gamma value change curve on the timeline.

[0082] Furthermore, the following contents are added:

[0083] When the subsequent gamma value change curve or the part of the curve at the corresponding position on the remaining gamma value change curve is moved on the time line, the stratigraphic interface is also constructed according to the position of the slope change point of each gamma value change curve;

[0084] The forward route is adjusted according to the constructed stratigraphic interface and the stratigraphic interface is confirmed. After the stratigraphic interface is confirmed, the time difference of the position of the slope change point of each gamma value change curve should be within the allowable range.

[0085] The purpose of constructing the stratigraphic interface according to the position of the slope change point of each gamma value change curve is to determine the correspondence of the slope change points of the gamma value change curve, and then adjust the forward route and confirm the stratigraphic interface.

[0086] The stratigraphic interface obtained at this time is obtained through calculation and is a virtual stratigraphic interface. Then the route needs to be adjusted and the stratigraphic interface needs to be confirmed. The gamma value change curve obtained again after adjusting the route should have a time difference within the allowable range for the location of the slope change point of each gamma value change curve, which is generally 1-2 seconds.

[0087] In some possible implementations, the formation interface is constructed by determining the appearance time and corresponding position of the slope change point of the gamma value change curve, and then obtaining multiple line segments by multiplying the drilling speed and the time difference. Finally, the ends of these line segments are used to obtain the formation interface. The end of the line segment should be located on the formation interface, or the sum of the straight-line distances between the end of the line segment and the formation interface is minimized.

[0088] When the time difference is not within the allowable range, the drill bit's forward route needs to be readjusted so that the drill bit can enter the next formation perpendicular to the formation interface. It should be understood that for thin and complex reservoirs, the drill bit should enter the reservoir as much as possible during the exploration process and then move forward in the reservoir. When the drill bit moves along the edge of the reservoir, it is likely that the reservoir will not be accessible, because the detection range of the gamma probe is limited, and the environment at the interface is complex, which cannot provide sufficient effective information, which can easily lead to a decrease in the drilling rate.

[0089] Therefore, in the present application, when a potential stratum interface is found, the advancing direction of the drill bit is adjusted so that the drill bit advances perpendicularly to the stratum interface.

[0090] In some examples, it is also necessary to determine the departure direction of the forward process, which refers to whether the drill bit leaves the reservoir from the top surface or the bottom surface of the reservoir. It should be understood that it is easy to determine that the drill bit has left the reservoir through the gamma value change curve, but it is impossible to determine whether the drill bit leaves the reservoir from the top surface or the bottom surface of the reservoir. At this time, it is impossible to adjust the forward direction of the drill bit so that the drill bit returns to the reservoir again, resulting in an incomplete reservoir being explored.

[0091] The specific method for determining the departure direction of the forward process is as follows:

[0092] S401, selecting two windows and obtaining gamma value change curves of the two windows, which are respectively recorded as a first gamma value change curve and a second gamma value change curve;

[0093] S402, intercepting a change portion of the first gamma value change curve and recording it as a first change curve;

[0094] S403, intercepting a corresponding change portion of the second gamma value change curve and recording it as a second change curve;

[0095] S404, placing the first change curve and the second change curve into the same coordinate system and moving the first change curve so that the first change curve and the second change curve overlap;

[0096] S405, calculating the forward distance according to the forward speed and verifying that the difference between the forward distance and the moving distance of the first change curve is within an allowable range.

[0097] The contents in step S401 to step S405 are determined using the gamma value change curves of the two windows. Since the two windows leave the reservoir at different times, it is possible to determine whether the drill bit leaves the reservoir top or bottom by the time difference. Figure 7 and Figure 8 shown.

[0098] The specific judgment method is: determine the departure direction according to the moving direction and the forward direction of the first change curve. When the moving direction and the forward direction of the first change curve are opposite, the departure direction is away from the top surface of the reservoir. When the moving direction and the forward direction of the first change curve are the same, the departure direction is away from the bottom surface of the reservoir.

[0099] Furthermore, it is also necessary to construct a stratigraphic interface away from the reservoir, and to correct the allowable range of the difference between the advancing distance and the moving distance of the first variation curve according to the angle between the advancing direction and the constructed stratigraphic interface. The purpose of this step is to verify the judgment method and to further determine the accuracy of the judgment result.

[0100] The present application also provides a dynamic real-time imaging device, comprising:

[0101] A first data acquisition unit, used for continuously acquiring the gamma value of the surrounding environment and generating a gamma value change curve during horizontal or inclined forward movement, wherein when continuously acquiring the gamma value of the surrounding environment, there are multiple acquisition windows and the direction of each acquisition window remains unchanged;

[0102] A first determining unit, configured to determine a formation change according to a waveform change of one of the gamma value change curves;

[0103] A second determination unit is used to determine the formation change and the formation interface by using the waveform change of the residual gamma value change curve;

[0104] The image drawing unit is used to draw an image based on the travel route according to the obtained stratum interface.

[0105] Furthermore, it also includes:

[0106] A second data acquisition unit, used to acquire a slope change point of a gamma value change curve;

[0107] A first processing unit is used to track the change trend of the subsequent gamma value change curve from the appearance time of the slope change point;

[0108] The second processing unit is used to determine that a formation change occurs when the value of the subsequent gamma value change curve is stable or fluctuates within a range.

[0109] Furthermore, it also includes:

[0110] A third data acquisition unit, used to acquire a portion of the curve at a corresponding position on the residual gamma value variation curve;

[0111] A comparison unit, used for comparing the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve;

[0112] The third processing unit is used to confirm that the subsequent gamma value change curve has range fluctuation when the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve meets the requirement.

[0113] Further, when comparing the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve, the subsequent gamma value change curve or the partial curve at the corresponding position on the remaining gamma value change curve is moved on the timeline.

[0114] Furthermore, it also includes:

[0115] A first construction unit is used to construct a stratum interface according to the position of the slope change point of each gamma value change curve when moving the subsequent gamma value change curve or the part of the curve at the corresponding position on the remaining gamma value change curve on the timeline;

[0116] The fourth processing unit is used to adjust the forward route according to the constructed stratum interface and confirm the stratum interface. After confirming the stratum interface, the time difference of the position of the slope change point of each gamma value change curve should be within the allowable range.

[0117] Furthermore, it also includes:

[0118] a fourth data acquisition unit, configured to select two windows and obtain gamma value change curves of the two windows, which are respectively recorded as a first gamma value change curve and a second gamma value change curve;

[0119] a fifth processing unit, configured to intercept a change portion of the first gamma value change curve and record the change portion as a first change curve;

[0120] a sixth processing unit, configured to intercept a corresponding change portion of the second gamma value change curve and record the portion as a second change curve;

[0121] A seventh processing unit, configured to place the first change curve and the second change curve into the same coordinate system and move the first change curve so that the first change curve and the second change curve overlap;

[0122] a confirmation unit, configured to calculate the forward distance according to the forward speed and verify that the difference between the forward distance and the moving distance of the first variation curve is within an allowable range;

[0123] The departure direction is determined according to the moving direction and the advancing direction of the first change curve. When the moving direction and the advancing direction of the first change curve are opposite, the departure direction is away from the top surface of the reservoir. When the moving direction and the advancing direction of the first change curve are the same, the departure direction is away from the bottom surface of the reservoir.

[0124] Furthermore, a stratigraphic interface far away from the reservoir is constructed, and the allowable range of the difference between the advancing distance and the moving distance of the first variation curve is corrected according to the angle between the advancing direction and the constructed stratigraphic interface.

[0125] 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.

[0126] 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).

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] The present application also provides an azimuth gamma probe, the azimuth gamma probe comprising:

[0136] one or more memories for storing instructions; and

[0137] One or more processors are used to call and run the instructions from the memory to execute the method as described above.

[0138] The present application also provides a well logging instrument, including the azimuth gamma probe as described above.

[0139] The present application also provides a computer program product, which includes instructions. When the instructions are executed, the azimuth gamma probe and the well logging tool perform operations corresponding to the azimuth gamma probe and the well logging tool of the above method.

[0140] 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.

[0141] The chip system may be composed of chips, or may include chips and other discrete devices.

[0142] 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.

[0143] 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.

[0144] Optionally, the computer instructions are stored in a memory.

[0145] 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.

[0146] 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.

[0147] The nonvolatile memory may be a ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory.

[0148] 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 synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct memory bus random access memory.

[0149] 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 dynamic real-time imaging method, characterized in that: include: In the process of horizontal or oblique advancement, the gamma value of the surrounding environment is continuously acquired and a gamma value change curve is generated. When the gamma value of the surrounding environment is continuously acquired, the number of acquisition windows is multiple and the direction of each acquisition window remains unchanged; Determine the formation change according to the waveform change of one of the gamma value change curves; Using the waveform change of the residual gamma value change curve to determine the formation change and the formation interface; Drawing an image based on the travel route according to the obtained stratigraphic interface; It also includes determining the departure direction of the forward process, and determining the departure direction of the forward process includes: Selecting two windows and obtaining gamma value change curves of the two windows, which are respectively recorded as a first gamma value change curve and a second gamma value change curve; intercepting a changing portion of the first gamma value changing curve and recording it as a first changing curve; intercepting a corresponding change portion of the second gamma value change curve and recording it as a second change curve; Putting the first change curve and the second change curve into the same coordinate system and moving the first change curve so that the first change curve and the second change curve overlap; Calculating the forward distance according to the forward speed and verifying that the difference between the forward distance and the moving distance of the first change curve is within an allowable range; Determine the departure direction according to the moving direction and the advancing direction of the first change curve. When the moving direction and the advancing direction of the first change curve are opposite, the departure direction is away from the top surface of the reservoir. When the moving direction and the advancing direction of the first change curve are the same, the departure direction is away from the bottom surface of the reservoir. A stratum interface away from the reservoir is constructed, and the allowable range of the difference between the advancing distance and the moving distance of the first variation curve is corrected according to the angle between the advancing direction and the constructed stratum interface.

2. The dynamic real-time imaging method according to claim 1, characterized in that: Determining the formation changes based on the waveform changes of one of the gamma value change curves includes: Get the slope change point of the gamma value change curve; From the time when the slope change point appears, the change trend of the subsequent gamma value change curve is tracked; When the values ​​of the subsequent gamma value change curves are stable or fluctuate within a range, it is determined that the formation has changed.

3. The dynamic real-time imaging method according to claim 2, characterized in that: When the subsequent gamma value change curve fluctuates within a range, it also includes: Obtaining a portion of the curve at a corresponding position on the residual gamma value variation curve; comparing the similarity between the subsequent gamma value change curve and the partial curves at corresponding positions on the remaining gamma value change curve; When the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve meets the requirement, it is confirmed that the subsequent gamma value change curve has range fluctuation.

4. The dynamic real-time imaging method according to claim 3, characterized in that: When comparing the similarity between the subsequent gamma value change curve and the partial curve at the corresponding position on the remaining gamma value change curve, the subsequent gamma value change curve or the partial curve at the corresponding position on the remaining gamma value change curve is moved on the timeline.

5. The dynamic real-time imaging method according to claim 4, characterized in that: Also includes: When the subsequent gamma value change curve or the part of the curve at the corresponding position on the remaining gamma value change curve is moved on the time line, the stratigraphic interface is also constructed according to the position of the slope change point of each gamma value change curve; The forward route is adjusted according to the constructed stratigraphic interface and the stratigraphic interface is confirmed. After the stratigraphic interface is confirmed, the time difference of the position of the slope change point of each gamma value change curve should be within the allowable range.

6. A dynamic real-time imaging device, characterized in that: include: A first data acquisition unit is used to continuously acquire the gamma value of the surrounding environment and generate a gamma value change curve during horizontal or inclined forward movement. When continuously acquiring the gamma value of the surrounding environment, there are multiple acquisition windows and the direction of each acquisition window remains unchanged; A first determining unit, configured to determine a formation change according to a waveform change of one of the gamma value change curves; A second determination unit is used to determine the formation change and the formation interface by using the waveform change of the residual gamma value change curve; An image drawing unit, used for drawing an image based on the travel route according to the obtained stratum interface; a fourth data acquisition unit, configured to select two windows and obtain gamma value change curves of the two windows, which are respectively recorded as a first gamma value change curve and a second gamma value change curve; a fifth processing unit, configured to intercept a change portion of the first gamma value change curve and record the change portion as a first change curve; a sixth processing unit, configured to intercept a corresponding change portion of the second gamma value change curve and record the portion as a second change curve; A seventh processing unit, configured to place the first change curve and the second change curve into the same coordinate system and move the first change curve so that the first change curve and the second change curve overlap; a confirmation unit, configured to calculate the forward distance according to the forward speed and verify that the difference between the forward distance and the moving distance of the first variation curve is within an allowable range; Determine the departure direction according to the moving direction and the advancing direction of the first change curve. When the moving direction and the advancing direction of the first change curve are opposite, the departure direction is away from the top surface of the reservoir. When the moving direction and the advancing direction of the first change curve are the same, the departure direction is away from the bottom surface of the reservoir. Furthermore, a stratigraphic interface far away from the reservoir is constructed, and the allowable range of the difference between the advancing distance and the moving distance of the first variation curve is corrected according to the angle between the advancing direction and the constructed stratigraphic interface.

7. An azimuth gamma probe, characterized in that: The azimuth gamma probe 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 well logging instrument, characterized in that: Comprising the azimuth gamma probe as claimed in claim 7.

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