Stratum information extraction method and device, computer equipment and storage medium

Abstract

The invention provides a stratum information extraction method and device, computer equipment and a storage medium. The method comprises the steps that reference track point coordinates of a reference well are obtained; positive drilling track point coordinates of the horizontal well are obtained; adjusting a pre-generated initial stratum control line according to the reference track point coordinate and the positive drilling track point coordinate to obtain a positive drilling stratum control line; detecting whether each positive drilling track point coordinate of the horizontal well is located between two adjacent positive drilling formation control lines or not; when the coordinates of the forward drilling track point are located between the two adjacent forward drilling stratum control lines, the stratum information of the track point corresponding to the coordinates of the forward drilling track point is calculated through the two adjacent forward drilling stratum control lines. The forward drilling formation control line of the horizontal well is adjusted and optimized according to the reference trajectory point coordinates of the reference well, so that formation information is calculated by using the forward drilling formation control line and the trajectory points of the horizontal well, formation information is rapidly provided for a forward modeling algorithm, and geosteering interpretation efficiency and trajectory adjustment precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of geological data processing, and in particular to a method, device, computer equipment and storage medium for extracting stratum information. Background Art

[0002] The forward modeling of the LWD curve provides important reference information for geosteering operations. By comparing the forward modeling results with the actual drilling logging data, it can assist in determining the formation location of the drill bit, optimize the drilling direction and ensure the horizontal well encounter rate. At present, the forward modeling process often requires the construction of a grid geological body model around the horizontal well, and then obtain the information required for the forward modeling by calculating the position of the trajectory and the data of adjacent cells. However, this method requires refined modeling, and the overall calculation amount is large and the speed is slow. It is not applicable when there is little information around the well to be drilled and the steering operation time is short. Summary of the invention

[0003] Based on this, it is necessary to provide a formation information extraction method, device, computer equipment and storage medium to address the above technical problems.

[0004] A method for extracting stratum information, comprising:

[0005] Obtaining the coordinates of the reference trajectory points of the reference well;

[0006] Obtain the coordinates of the positive drilling trajectory points of the horizontal well;

[0007] Adjust the pre-generated initial formation control line according to the coordinates of the reference trajectory point and the coordinates of the positive drilling trajectory point to obtain the positive drilling formation control line;

[0008] Detecting whether the coordinates of each of the positive drilling trajectory points of the horizontal well are located between two adjacent positive drilling formation control lines;

[0009] When the coordinate of the positive drilling trajectory point is located between two adjacent positive drilling formation control lines, the two adjacent positive drilling formation control lines are used to calculate the formation information of the trajectory point corresponding to the coordinate of the positive drilling trajectory point.

[0010] In one embodiment, before the step of adjusting the pre-generated initial formation control line according to the reference trajectory point coordinates and the positive drilling trajectory point coordinates, the step further includes:

[0011] Obtain geological stratification data of reference wells;

[0012] The initial stratigraphic control line is generated according to the geological stratification data of the reference well.

[0013] In one embodiment, the step of generating the initial stratigraphic control line according to the geological stratification data of the reference well comprises:

[0014] Acquiring multiple geological stratification interfaces of the reference well;

[0015] Determine the geological stratification point of each reference stratum control line based on the vertical depth value of each geological stratification interface of the reference well;

[0016] The initial stratigraphic control line is generated based on the geological stratification points and the reference trajectory point coordinates of the reference well.

[0017] In one embodiment, the step of adjusting the pre-generated initial formation control line according to the reference trajectory point coordinates and the positive drilling trajectory point coordinates to obtain the positive drilling formation control line comprises:

[0018] Comparing the coordinates of each reference trajectory point with the coordinates of each positive drilling trajectory point, determining the coordinates of each positive drilling trajectory point that belongs to the same layer as the coordinates of each reference trajectory point, and determining them as the coordinates of the positive drilling control line;

[0019] The initial formation control line is adjusted according to the coordinates of the positive drilling control line to obtain the positive drilling formation control line.

[0020] In one embodiment, the step of obtaining the coordinates of the positive drilling trajectory points of the horizontal well includes:

[0021] Acquiring the wellhead coordinates, well inclination data and azimuth data of the horizontal well;

[0022] The coordinates of a plurality of positive drilling trajectory points of the horizontal well are obtained by calculation according to the wellhead coordinates, the well inclination data and the azimuth data.

[0023] In one embodiment, when the coordinate of the positive drilling trajectory point is located between two adjacent positive drilling formation control lines, the step of calculating the formation information of the trajectory point corresponding to the coordinate of the positive drilling trajectory point by using the two adjacent positive drilling formation control lines comprises:

[0024] When the coordinate of the positive drilling trajectory point is located between two adjacent positive drilling formation control lines, the vertical depth correction value of the trajectory point corresponding to the coordinate of the positive drilling trajectory point is calculated using the two adjacent positive drilling formation control lines;

[0025] The stratigraphic information of the trajectory point is calculated according to the vertical depth correction value.

[0026] In one of the embodiments, in the step of calculating the vertical depth correction value of the trajectory point corresponding to the coordinates of the positive drilling trajectory point using two adjacent positive drilling formation control lines, the vertical depth correction value DepthOffset is calculated using the following calculation formula;

[0027]

[0028]

[0029]

[0030] DepthOffset=L1.zT.z+horDis×tan(-β)

[0031] In the formula, L1 and L2 are two adjacent formation control lines being drilled, L1.x is the x-coordinate of the first layer point on the formation control line L1, L1.y is the y-coordinate of the first layer point on the formation control line L1, and L1.z is the z-coordinate of the first layer point on the formation control line L1; L2.x is the x-coordinate of the first layer point on the formation control line L2, L2.y is the y-coordinate of the first layer point on the formation control line L2, and L2.z is the z-coordinate of the first layer point on the formation control line L2.

[0032] A stratum information extraction device, comprising:

[0033] A reference coordinate acquisition module, used to acquire the coordinates of the reference trajectory points of the reference well;

[0034] A positive drilling coordinate acquisition module is used to obtain the coordinates of the positive drilling trajectory points of the horizontal well;

[0035] A positive drilling control line adjustment module, used for adjusting a pre-generated initial formation control line according to the coordinates of the reference trajectory point and the coordinates of the positive drilling trajectory point to obtain a positive drilling formation control line;

[0036] A detection module, used for detecting whether the coordinates of each of the positive drilling trajectory points of the horizontal well are located between two adjacent positive drilling formation control lines;

[0037] The formation information calculation module is used to calculate the formation information of the trajectory point corresponding to the coordinate of the positive drilling trajectory point by using the two adjacent positive drilling formation control lines when the coordinate of the positive drilling trajectory point is located between the two adjacent positive drilling formation control lines.

[0038] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the formation information extraction method described in any of the above embodiments when executing the computer program.

[0039] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the formation information extraction method described in any of the above embodiments.

[0040] The above-mentioned formation information extraction method, device, computer equipment and storage medium adjust and optimize the forward drilling formation control line of the horizontal well according to the coordinates of the reference trajectory points of the reference well, thereby obtaining the formation information by using the forward drilling formation control line and the trajectory points of the horizontal well, thereby realizing the rapid provision of formation information to the forward algorithm and improving the efficiency of geological guidance interpretation and the accuracy of trajectory adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of a flow chart of a method for extracting formation information in one embodiment;

[0042] Figure 2 is a structural block diagram of a stratum information extraction device in one embodiment;

[0043] Figure 3 is an internal structure diagram of a computer device in one embodiment;

[0044] Figure 4 It is a schematic diagram of the effect of the adjusted positive drilling formation control line in one embodiment;

[0045] Figure 5 The figure is a schematic diagram showing the effect of the calculated formation information in one embodiment. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0047] Embodiment 1

[0048] In this embodiment, Figure 1 As shown, a method for extracting formation information is provided, which includes:

[0049] Step 110, obtaining the coordinates of the reference trajectory points of the reference well.

[0050] In this embodiment, the reference well is used to provide reference data, and the reference trajectory point coordinates are the coordinates of each point on the trajectory of the reference well. In this embodiment, the reference trajectory data of each trajectory point of the reference well is obtained, and the trajectory data of the reference well includes the reference trajectory point coordinates. The reference well can be a pilot well, an adjacent well, or a virtual well, wherein the adjacent well is a well adjacent to the horizontal well being drilled.

[0051] Step 120, obtaining the coordinates of the positive drilling trajectory points of the horizontal well.

[0052] In this embodiment, the horizontal well is the well currently being drilled. In this embodiment, the coordinates of the positive drilling trajectory points are the coordinates of each point on the trajectory of the horizontal well. In this embodiment, the positive drilling trajectory data of each trajectory point of the horizontal well is obtained, and the trajectory data of the horizontal well includes the coordinates of the positive drilling trajectory points.

[0053] Step 130, adjusting the pre-generated initial formation control line according to the coordinates of the reference trajectory points and the coordinates of the positive drilling trajectory points to obtain the positive drilling formation control line.

[0054] In this embodiment, the initial formation control line is pre-generated before step 130. In this step, the pre-generated initial formation control line is adjusted to optimize the initial formation control line, thereby obtaining the positive drilling formation control line, making the positive drilling formation control line more accurate.

[0055] Step 140, detecting whether the coordinates of each of the positive drilling trajectory points of the horizontal well are located between two adjacent positive drilling formation control lines.

[0056] In this embodiment, the coordinates of all trajectory points of the horizontal well are traversed to detect whether the coordinates of each positive drilling trajectory point are between two adjacent positive drilling formation control lines.

[0057] Step 150: When the coordinate of the positive drilling trajectory point is located between two adjacent positive drilling formation control lines, the formation information of the trajectory point corresponding to the coordinate of the positive drilling trajectory point is calculated using the two adjacent positive drilling formation control lines.

[0058] In this embodiment, when the coordinates of the positive drilling trajectory point are located between two adjacent positive drilling formation control lines, it indicates that the coordinates of the positive drilling trajectory point are valid coordinates, and the formation information of the trajectory point located between the two positive drilling formation control lines is calculated using the two adjacent positive drilling formation control lines, thereby obtaining the formation information of the trajectory point of the horizontal well. The formation information includes the upper and lower interface distances, formation dip angles, formation logging data, etc.

[0059] In one embodiment, when the coordinates of the positive drilling trajectory point are not located between two adjacent positive drilling formation control lines, the output is empty, and the coordinates of the positive drilling trajectory point are not calculated.

[0060] In the above embodiment, the forward drilling formation control line of the horizontal well is adjusted and optimized according to the reference formation control line of the reference well, so that the formation information is calculated using the forward drilling formation control line and the trajectory points of the horizontal well, thereby realizing the rapid provision of formation information to the forward algorithm and improving the efficiency of geological guidance interpretation and the accuracy of trajectory adjustment.

[0061] In one embodiment, before the step of adjusting the pre-generated initial formation control line according to the reference trajectory point coordinates and the positive drilling trajectory point coordinates, it also includes: acquiring geological stratification data of a reference well; and generating the initial formation control line according to the geological stratification data of the reference well.

[0062] In this embodiment, the initial stratigraphic control line is formed according to the geological stratification data of the reference well. Since the geological stratification data of the reference well can be directly obtained through the reference well, the initial stratigraphic control line can be quickly formed through the geological stratification data of the reference well, and the initial stratigraphic control line is used as the stratigraphic control line of the horizontal well, which is conducive to improving the formation efficiency of the stratigraphic control line.

[0063] In one embodiment, the step of generating the initial stratigraphic control line based on the geological stratification data of the reference well includes: acquiring multiple geological stratification interfaces of the reference well; determining the geological stratification points of each reference stratigraphic control line based on the vertical depth value of each geological stratification interface of the reference well; and generating the initial stratigraphic control line based on the geological stratification points and the reference trajectory point coordinates of the reference well.

[0064] In this embodiment, first, a straight line perpendicular to the horizontal plane is constructed. The straight line is accompanied by two parameters, namely, the horizontal coordinate and the vertical depth correction value. The horizontal coordinate defaults to the wellhead coordinate of the reference well, and the vertical depth correction value defaults to empty; then, the vertical depth values ​​of the n geological stratification interfaces of the reference well are determined, that is, d1, d2, ..., dn; finally, the geological stratification interfaces of the reference well are marked on the straight line in the form of points as geological stratification points on the straight line. At the same time, each geological stratification point stores its vertical depth value in the reference well, and the initial stratigraphic control line is generated based on the coordinates of the geological stratification point and the reference trajectory point.

[0065] In one embodiment, the step of adjusting the pre-generated initial formation control line according to the reference trajectory point coordinates and the positive drilling trajectory point coordinates to obtain the positive drilling formation control line includes: comparing the coordinates of each reference trajectory point with the coordinates of each positive drilling trajectory point, determining the coordinates of each positive drilling trajectory point belonging to the same layer as the coordinates of each reference trajectory point, and determining them as the coordinates of the positive drilling control line; adjusting the initial formation control line according to the coordinates of the positive drilling control line to obtain the positive drilling formation control line.

[0066] In this embodiment, the coordinates of each trajectory point of the reference well and the horizontal well are compared by using the logging interpretation analysis method, and the trajectory points belonging to the same interpretation layer are marked on the trajectories of the reference well and the horizontal well, respectively, so that the coordinates of each positive drilling trajectory point belonging to the same layer as the reference trajectory point coordinates of the reference well are determined as the positive drilling control line coordinates, and then the initial formation control line is adjusted and optimized according to the positive drilling control line coordinates. Specifically, the coordinates of the initial formation control line are adjusted according to the positive drilling control line coordinates so that the coordinates of the initial formation control line correspond to or are equal to the coordinates of the positive drilling control line of the same layer. In this way, the coordinates of the initial formation control line are corrected, and then the optimized positive drilling formation control line is obtained, such as Figure 4 FIG. 1 is a schematic diagram of an optimized positive drilling formation control line in one embodiment.

[0067] In one embodiment, the step of obtaining the coordinates of the positive drilling trajectory points of the horizontal well includes: obtaining the wellhead coordinates, well inclination data and azimuth data of the horizontal well; and calculating and obtaining the coordinates of multiple positive drilling trajectory points of the horizontal well based on the wellhead coordinates, the well inclination data and the azimuth data.

[0068] In this embodiment, the wellhead coordinates, well inclination data, azimuth, while drilling gamma data and other data of the horizontal well are obtained, and the coordinates of each trajectory point of the horizontal well are calculated based on the wellhead coordinates, well inclination data, azimuth, and while drilling gamma data of the horizontal well, that is, the coordinates of the positive drilling trajectory points of the horizontal well are obtained.

[0069] In one embodiment, when the coordinates of the positive drilling trajectory point are located between two adjacent positive drilling formation control lines, the step of using the two adjacent positive drilling formation control lines to calculate the formation information of the trajectory point corresponding to the coordinates of the positive drilling trajectory point comprises: when the coordinates of the positive drilling trajectory point are located between two adjacent positive drilling formation control lines, using the two adjacent positive drilling formation control lines to calculate the vertical depth correction value of the trajectory point corresponding to the coordinates of the positive drilling trajectory point; and calculating the formation information of the trajectory point according to the vertical depth correction value. In this embodiment, the vertical depth correction value is also called the relative vertical depth offset, and the formation information includes the upper and lower interface distances, formation dip angles, formation logging data, etc. Figure 5 The figure is a schematic diagram showing the effect of the calculated formation information in one embodiment.

[0070] In one embodiment, in the step of calculating the vertical depth correction value of the trajectory point corresponding to the coordinates of the positive drilling trajectory point using two adjacent positive drilling formation control lines, the vertical depth correction value DepthOffset is calculated using the following calculation formula;

[0071]

[0072]

[0073]

[0074] DepthOffset=L1.zT.z+horDis×tan(-β)

[0075] In the formula, the coordinates of the positive drilling trajectory point are set to T (x, y, z), L1 and L2 are two adjacent positive drilling formation control lines, Ln.x is the x coordinate of the first layer point on the control line, Ln.y is the y coordinate of the first layer point on the control line, and Ln.z is the z coordinate of the first layer point on the control line. For example, L1.x is the x coordinate of the first layer point on the positive drilling formation control line L1, L1.y is the y coordinate of the first layer point on the positive drilling formation control line L1, and L1.z is the z coordinate of the first layer point on the positive drilling formation control line L1; L2.x is the x coordinate of the first layer point on the positive drilling formation control line L2, L2.y is the y coordinate of the first layer point on the positive drilling formation control line L2, and L2.z is the z coordinate of the first layer point on the positive drilling formation control line L2.

[0076] Embodiment 2

[0077] In this embodiment, a method for extracting formation information is provided, which includes:

[0078] Step 1, import the wellhead coordinates, well inclination, azimuth, geological layering and gamma logging data of reference well X;

[0079] Step 2, import the wellhead coordinates, well inclination, azimuth, and gamma data of horizontal well Y, and the pilot well of well X and well Y;

[0080] Step 3, using the horizontal wellhead coordinates and well inclination azimuth data to calculate the three-dimensional coordinates of each point on the trajectory;

[0081] Step 4, forming an initial stratigraphic control line based on the geological stratification data of the reference well;

[0082] Step 41: Construct a straight line perpendicular to the horizontal plane. The straight line has two parameters, namely, the horizontal coordinate and the vertical depth correction value. The horizontal coordinate defaults to the wellhead coordinate of the reference well, and the vertical depth correction value defaults to null.

[0083] Step 42: Determine the vertical depths of the seven geological stratification interfaces of the reference well, which are 3570.3 meters, 3597.7 meters, 3626.3 meters, 3652.4 meters, 3677.2 meters, 3703.5 meters, and 3720.5 meters respectively;

[0084] Step 43: The geological stratification interface of the reference well is marked on the straight line in the form of a point as a geological stratification point on the straight line, and each geological stratification point stores its vertical depth value in the reference well;

[0085] Step 5, using the well logging interpretation and analysis method to mark the trajectory points belonging to the same interpretation layer on the reference well and the horizontal well trajectory respectively;

[0086] Step 6, copy the initial formation control line of step 4 and optimize the control line parameters according to the trajectory points of step 5. The optimized control line is as follows: Figure 4 As shown;

[0087] Step 61: Copy the initial formation control line of step 3;

[0088] Step 62: Assume that the geodetic coordinates of the formation control line are the horizontal plane coordinates of the horizontal well mark trajectory point in step 5;

[0089] Step 63: Set the vertical depth correction value of the formation control line to the vertical depth difference between the reference well and the horizontal well mark trajectory point;

[0090] Step 7, repeat steps 5 and 6 to form a formation control line set on the horizontal well trajectory, such as Figure 4 As shown, 14 stratigraphic control lines were constructed;

[0091] Step 8, traverse all trajectory points on the horizontal well. If the trajectory point is between two adjacent control lines in step 7, execute steps 9 and 10, otherwise the output is -9999;

[0092] Step 9, using adjacent control lines to calculate the vertical depth correction value of the trajectory point;

[0093] Step 91: set the two adjacent control lines of the current trajectory point to L1 and L2 in order of well depth, and set the trajectory point to T(x, y, z);

[0094] Step 92: Calculate the relative vertical depth offset of the trajectory point on L1, that is, the vertical depth correction value DepthOffset:

[0095]

[0096]

[0097]

[0098] DepthOffset=L1.zT.z+horDis×tan(-β)

[0099] Wherein, Ln.x is the x-coordinate of the first layer point on the control line, Ln.y is the y-coordinate of the first layer point on the control line, and Ln.z is the z-coordinate of the first layer point on the control line.

[0100] Step 10, such as Figure 5As shown, the formation information of the trajectory point is calculated and output according to the vertical depth correction value in step 9.

[0101] At present, in the forward modeling process, it is often necessary to construct a grid geological body model around the horizontal well, and then obtain the information required for the forward modeling by calculating the position of the trajectory and the data of adjacent cells. However, this method requires refined modeling, and the overall calculation amount is large and the speed is slow. It is not applicable when there is little information around the well to be drilled and the steering operation time is short. This embodiment proposes a method for quickly extracting formation information along the horizontal well trajectory. First, the reference well and horizontal well data are imported, and the formation interface control line along the horizontal well trajectory is preliminarily established based on the feature comparison and interpretation of the reference well and horizontal well logging curves. The control line and the horizontal well trajectory are used to predict the formation interface inclination, the upper and lower interface distances, the near-drill bit simulation logging data, etc., and these data are output to quickly provide formation information for the forward algorithm, thereby improving the efficiency of geological steering interpretation and the accuracy of trajectory adjustment.

[0102] It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 1 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0103] Embodiment 3

[0104] In this embodiment, Figure 2 As shown, a formation information extraction device is provided, comprising:

[0105] A reference coordinate acquisition module 210 is used to acquire the coordinates of the reference trajectory points of the reference well;

[0106] A positive drilling coordinate acquisition module 220 is used to acquire the coordinates of the positive drilling trajectory points of the horizontal well;

[0107] A positive drilling control line adjustment module 230 is used to adjust the pre-generated initial formation control line according to the reference trajectory point coordinates and the positive drilling trajectory point coordinates to obtain a positive drilling formation control line;

[0108] A detection module 240 is used to detect whether the coordinates of each of the positive drilling trajectory points of the horizontal well are located between two adjacent positive drilling formation control lines;

[0109] The formation information calculation module 250 is used to calculate the formation information of the trajectory point corresponding to the coordinate of the positive drilling trajectory point by using the two adjacent positive drilling formation control lines when the coordinate of the positive drilling trajectory point is between the two adjacent positive drilling formation control lines.

[0110] In one embodiment, the stratum information extraction device further includes:

[0111] A reference geological stratification data acquisition module is used to acquire geological stratification data of a reference well;

[0112] The initial formation control line generation module is used to generate the initial formation control line according to the geological stratification data of the reference well.

[0113] In one embodiment, the initial formation control line generation module includes:

[0114] A geological layer interface acquisition unit, used to acquire multiple geological layer interfaces of the reference well;

[0115] A geological stratification point acquisition unit, used for determining the geological stratification points of each reference stratum control line based on the vertical depth value of each geological stratification interface of the reference well;

[0116] The initial stratigraphic control line generating unit is used to generate the initial stratigraphic control line based on the coordinates of the geological stratification point and the reference trajectory point of the reference well.

[0117] In one embodiment, the positive drilling control line adjustment module includes:

[0118] A comparison and determination unit, used for comparing the coordinates of each reference trajectory point with the coordinates of each positive drilling trajectory point, determining the coordinates of each positive drilling trajectory point belonging to the same layer as the coordinates of each reference trajectory point, and determining them as the coordinates of the positive drilling control line;

[0119] An adjustment unit is used to adjust the initial formation control line according to the coordinates of the positive drilling control line to obtain the positive drilling formation control line.

[0120] In one embodiment, the drilling coordinate acquisition module includes:

[0121] A horizontal well data acquisition unit, used to acquire the wellhead coordinates, well deviation data and azimuth data of the horizontal well;

[0122] A forward drilling coordinate acquisition unit is used to calculate and obtain the coordinates of multiple forward drilling trajectory points of the horizontal well according to the wellhead coordinates, the well inclination data and the azimuth data.

[0123] In one embodiment, the formation information calculation module includes:

[0124] A vertical depth correction value calculation unit, used for calculating the vertical depth correction value of the trajectory point corresponding to the coordinate of the positive drilling trajectory point by using the two adjacent positive drilling formation control lines when the coordinate of the positive drilling trajectory point is located between the two adjacent positive drilling formation control lines;

[0125] A formation information calculation unit is used to calculate the formation information of the trajectory point according to the vertical depth correction value.

[0126] In one embodiment, the vertical depth correction value calculation unit calculates the vertical depth correction value DepthOffset using the following calculation formula:

[0127]

[0128]

[0129]

[0130] DepthOffset=L1.zT.z+horDis×tan(-β)

[0131] In the formula, L1 and L2 are two adjacent formation control lines being drilled, L1.x is the x-coordinate of the first layer point on the formation control line L1, L1.y is the y-coordinate of the first layer point on the formation control line L1, and L1.z is the z-coordinate of the first layer point on the formation control line L1; L2.x is the x-coordinate of the first layer point on the formation control line L2, L2.y is the y-coordinate of the first layer point on the formation control line L2, and L2.z is the z-coordinate of the first layer point on the formation control line L2.

[0132] The specific definition of the stratigraphic information extraction device can be found in the definition of the stratigraphic information extraction method above, which will not be repeated here. Each unit in the above-mentioned stratigraphic information extraction device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned units can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned units.

[0133] Embodiment 4

[0134] In this embodiment, a computer device is provided. Its internal structure diagram can be shown as follows: Figure 3As shown. The computer device includes a processor, a memory, a network interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program, and the non-volatile storage medium is deployed with a database, which is used for reference well trajectory data, geological stratification data and logging data. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with other computer devices deployed with application software. When the computer program is executed by the processor, a method for extracting stratigraphic information is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0135] Those skilled in the art will understand that Figure 3 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0136] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the formation information extraction method described in any of the above embodiments when executing the computer program.

[0137] Embodiment 5

[0138] In this embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the formation information extraction method described in any of the above embodiments are implemented.

[0139] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0140] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0141] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for extracting stratum information, characterized in that: include: Obtaining the coordinates of the reference trajectory points of the reference well; Obtain the coordinates of the positive drilling trajectory points of the horizontal well; Adjust the pre-generated initial formation control line according to the coordinates of the reference trajectory point and the coordinates of the positive drilling trajectory point to obtain the positive drilling formation control line; Detecting whether the coordinates of each of the positive drilling trajectory points of the horizontal well are located between two adjacent positive drilling formation control lines; When the coordinate of the positive drilling trajectory point is located between two adjacent positive drilling formation control lines, the two adjacent positive drilling formation control lines are used to calculate the formation information of the trajectory point corresponding to the coordinate of the positive drilling trajectory point.

2. The method according to claim 1, characterized in that Before the step of adjusting the pre-generated initial formation control line according to the reference trajectory point coordinates and the positive drilling trajectory point coordinates, the method further includes: Obtain geological stratification data of reference wells; The initial stratigraphic control line is generated according to the geological stratification data of the reference well.

3. The method according to claim 2, characterized in that The step of generating the initial stratigraphic control line according to the geological stratification data of the reference well comprises: Acquiring multiple geological stratification interfaces of the reference well; Determine the geological stratification point of each reference stratum control line based on the vertical depth value of each geological stratification interface of the reference well; The initial stratigraphic control line is generated based on the geological stratification points and the reference trajectory point coordinates of the reference well.

4. The method according to claim 1, characterized in that: The step of adjusting the pre-generated initial formation control line according to the reference trajectory point coordinates and the positive drilling trajectory point coordinates to obtain the positive drilling formation control line comprises: Comparing the coordinates of each reference trajectory point with the coordinates of each positive drilling trajectory point, determining the coordinates of each positive drilling trajectory point that belongs to the same layer as the coordinates of each reference trajectory point, and determining them as the coordinates of the positive drilling control line; The initial formation control line is adjusted according to the coordinates of the positive drilling control line to obtain the positive drilling formation control line.

5. The method according to claim 1, characterized in that The step of obtaining the coordinates of the positive drilling trajectory points of the horizontal well comprises: Acquiring the wellhead coordinates, well inclination data and azimuth data of the horizontal well; The coordinates of a plurality of positive drilling trajectory points of the horizontal well are obtained by calculation according to the wellhead coordinates, the well inclination data and the azimuth data.

6. The method according to any one of claims 1 to 5, characterized in that: When the coordinate of the positive drilling trajectory point is located between two adjacent positive drilling formation control lines, the step of using the two adjacent positive drilling formation control lines to calculate the formation information of the trajectory point corresponding to the coordinate of the positive drilling trajectory point comprises: When the coordinate of the positive drilling trajectory point is located between two adjacent positive drilling formation control lines, the vertical depth correction value of the trajectory point corresponding to the coordinate of the positive drilling trajectory point is calculated using the two adjacent positive drilling formation control lines; The stratigraphic information of the trajectory point is calculated according to the vertical depth correction value.

7. The method according to claim 6, characterized in that In the step of calculating the vertical depth correction value of the trajectory point corresponding to the coordinates of the positive drilling trajectory point by using two adjacent positive drilling formation control lines, the vertical depth correction value DepthOffset is calculated by using the following calculation formula; DepthOffset=L1.zT.z+horDis×tan(-β) In the formula, the coordinates of the positive drilling trajectory point are assumed to be T(x, y, z), L1 and L2 are two adjacent positive drilling formation control lines, L1.x is the x-coordinate of the first layer point on the positive drilling formation control line L1, L1.y is the y-coordinate of the first layer point on the positive drilling formation control line L1, and L1.z is the z-coordinate of the first layer point on the positive drilling formation control line L1; L2.x is the x-coordinate of the first layer point on the positive drilling formation control line L2, L2.y is the y-coordinate of the first layer point on the positive drilling formation control line L2, and L2.z is the z-coordinate of the first layer point on the positive drilling formation control line L2.

8. A stratum information extraction device, characterized in that: include: A reference coordinate acquisition module, used to acquire the coordinates of the reference trajectory points of the reference well; A positive drilling coordinate acquisition module is used to obtain the coordinates of the positive drilling trajectory points of the horizontal well; A positive drilling control line adjustment module, used for adjusting a pre-generated initial formation control line according to the coordinates of the reference trajectory point and the coordinates of the positive drilling trajectory point to obtain a positive drilling formation control line; A detection module, used for detecting whether the coordinates of each of the positive drilling trajectory points of the horizontal well are located between two adjacent positive drilling formation control lines; The formation information calculation module is used to calculate the formation information of the trajectory point corresponding to the coordinate of the positive drilling trajectory point by using the two adjacent positive drilling formation control lines when the coordinate of the positive drilling trajectory point is located between the two adjacent positive drilling formation control lines.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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