Well logging curve filling processing method and device

Abstract

The present invention discloses a method and device for filling and processing a logging curve, wherein the method comprises: obtaining conventional logging data of a single well in a study area; determining the geological characteristics and logging response law of the study area according to the logging data, and determining the main drawing interval in the study area according to the geological characteristics and logging response law of the study area; determining the key layer segment from the main drawing interval for the studied layer segment, and performing curve filling on the key layer segment; identifying a closed area, and performing curve closure filling on the closed area. The present invention can realize efficient logging curve filling processing, so as to help logging researchers quickly locate the target reservoir or oil and gas-bearing layer segment, thereby improving the work efficiency of logging researchers.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum well logging and mapping, and in particular to a well logging curve filling processing method and device. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section.

[0003] Oil well logging technology is an important method for qualitative and quantitative evaluation of oil and gas reservoirs, and logging software is an important research content of oil well logging technology. In the field of oil well logging software, fast curve filling is an important function. Filling the curve of the study layer or important target layer can clearly mark the study layer, and it is also convenient to quickly locate the target reservoir or oil and gas layer.

[0004] Generally, curve filling is to fill the whole well section according to a certain rule. The selection of filling area mostly follows the following criteria: the layer characteristics are obvious, it belongs to the main reservoir range of the region, and the logging response characteristics are obvious and easy to identify. Curve drawing and filling of these layers can attract the attention of researchers and improve the pertinence and efficiency of research.

[0005] Since curve filling is based on the closed area parameter indicators between two curves, general petroleum logging methods generally support the curve filling function. From the perspective of drawing display, there is not much difference, only the difference in implementation method and efficiency.

[0006] In the existing logging curve filling processing scheme, the curve filling steps of the entire well section are cumbersome and the filling efficiency is low, and the filling according to the specified area position is not realized. This greatly restricts the work efficiency of logging research. Summary of the invention

[0007] An embodiment of the present invention provides a logging curve filling processing method for efficiently performing logging curve filling processing, the method comprising:

[0008] Obtain conventional logging data of single wells in the study area;

[0009] Determine the geological characteristics and logging response laws of the study area based on the logging data, and determine the main mapping intervals in the study area based on the geological characteristics and logging response laws of the study area;

[0010] For the studied layer section, key layer sections are determined from the main drawing intervals, and curves are filled for the key layer sections;

[0011] A closed area is identified, and a closed curve filling is performed on the closed area.

[0012] The embodiment of the present invention further provides a logging curve filling processing device for efficiently performing logging curve filling processing, the device comprising:

[0013] An acquisition unit, used to acquire conventional logging data of a single well in the study area;

[0014] A determination unit, used to determine the geological characteristics and logging response law of the study area according to the logging data, and determine the main mapping interval in the study area according to the geological characteristics and logging response law of the study area;

[0015] The first filling processing unit is used for determining the key layer segment from the main drawing interval for the layer segment under study, and performing curve filling on the key layer segment;

[0016] The second filling processing unit is used to identify a closed area and perform curve closed filling on the closed area.

[0017] An embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned logging curve filling processing method when executing the computer program.

[0018] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above-mentioned logging curve filling processing method.

[0019] In the embodiment of the present invention, the well logging curve filling processing scheme is compared with the technical scheme in the prior art that the curve filling steps of the entire well section are cumbersome, the filling efficiency is low, and the filling according to the specified area position is not realized, which greatly restricts the work efficiency of well logging scientific research. By: acquiring conventional well logging data of a single well in the study area; determining the geological characteristics and logging response laws of the study area according to the logging data, and determining the main drawing intervals in the study area according to the geological characteristics and logging response laws of the study area; for the layer section under study, determining the key layer section from the main drawing interval, and performing curve filling on the key layer section; identifying the closed area, and performing curve closing filling on the closed area, efficient well logging curve filling processing can be achieved, so as to help well logging researchers quickly locate the target reservoir or oil and gas containing layer section, thereby improving the work efficiency of well logging researchers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 Schematic diagram of the process of the well logging curve filling processing method in the embodiment of the present invention;

[0022] Figure 2A This is an example diagram of fast right filling in an embodiment of the present invention;

[0023] Figure 2B This is an example diagram of fast left filling in an embodiment of the present invention;

[0024] Figure 2C This is an example diagram of closed area filling in an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the process of curve filling for key layer segments in an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of a process of performing curve closing filling on a closed area in an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the logging curve filling processing device in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0029] Considering the problems existing in the existing logging curve filling technology, the inventors have proposed a logging curve filling processing solution. The solution is a fast logging curve filling solution, specifically, it relates to a solution that uses closed area tracking technology to select curve filling areas to achieve the purpose of fast logging curve filling. The solution quickly and efficiently fills the curve for the identified closed area. The following is a detailed introduction to the logging curve filling processing solution.

[0030] Figure 1 FIG. 1 is a flow chart of a logging curve filling processing method in an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0031] Step 101: Acquire conventional logging data of a single well in a study area;

[0032] Step 102: determining the geological characteristics and logging response law of the study area according to the logging data, and determining the main mapping interval in the study area according to the geological characteristics and logging response law of the study area;

[0033] Step 103: for the studied layer segment, determine the key layer segment from the main drawing interval, and fill the key layer segment with curves;

[0034] Step 104: Identify a closed area, and perform curve closing filling on the closed area.

[0035] In the embodiment of the present invention, the well logging curve filling processing scheme can realize efficient well logging curve filling processing, so as to help well logging researchers quickly locate the target reservoir or oil and gas layer section, and improve the work efficiency of well logging researchers, compared with the technical scheme in the prior art that has complicated curve filling steps for the entire well section, low filling efficiency, and does not realize filling according to the designated area position, which greatly restricts the work efficiency of well logging scientific research.

[0036] In one embodiment, Figure 3 As shown in the figure, for the studied layer segment, the key layer segment is determined from the main drawing interval, and the curve filling of the key layer segment can include the following steps:

[0037] Step 201: When the first curve is positioned, upon receiving a user's quick right-left filling trigger instruction, a left filling process is performed;

[0038] Step 202: When the second curve is located, upon receiving a quick right-fill trigger instruction from the user, right-fill processing is performed.

[0039] In specific implementation, the general process of curve filling for key layer sections is as follows: the user first uses the mouse to locate a curve, and then a curve and the left and right boundaries of the corresponding track are automatically found. The user quickly fills the left and right sides of the curve according to actual work needs. The above implementation method of curve filling for key layer sections further improves the efficiency of logging curve filling processing.

[0040] In one embodiment, Figure 4 As shown, identifying a closed area and performing curve closing filling on the closed area may include the following steps:

[0041] Step 301: receiving a user's operation instruction for positioning a first curve and a second curve;

[0042] Step 302: after the first curve and the second curve are positioned according to the operation instruction, searching for a first intersection point and a second intersection point of the first curve and the second curve;

[0043] Step 303: Identify a closed area according to the first intersection point, the second intersection point, and the curve data, and perform curve closing filling on the closed area according to a preset filling strategy.

[0044] In specific implementation, the general process of filling closed areas with curves is as follows: the user first uses the mouse to locate the two curves, and then the upper and lower intersection points of the two curves will be automatically found. The closed interval can be calculated based on the two intersection points and the curve data, and then the closed area is filled according to the specified rules. The above-mentioned identification of closed areas and the closing of closed areas with curves, that is, the closing of key layer sections, further improves the efficiency of logging curve filling processing.

[0045] In one embodiment, Figure 2C As shown, the first curve may be a neutron curve; and the second curve may be a density curve.

[0046] Another example is given below to illustrate the present invention so as to facilitate understanding of how to implement the present invention.

[0047] In order to achieve the purpose of the present invention, the well logging curve filling processing scheme provided by the present invention mainly includes the following steps:

[0048] Step 1: Load the conventional logging data (such as natural gamma, acoustic time difference, neutron, density curve, etc.) of a well in the study area (well A in this example) and draw a conventional logging map. Two curves are drawn in the logging map, namely the neutron curve (first curve) and the density curve (second curve); the neutron curve and the density curve need to be drawn in the same track.

[0049] Step 2: Set the scale range of the neutron curve to 45 to -15, and the scale range of the density curve to 1.95-2.95. Then, based on the stratigraphic characteristics (geological features) of the region and the logging response law, determine the main drawing layer segment (main drawing interval, the main drawing layer segment is generally the target layer segment of the study). In the main drawing layer segment, determine the depth segment that needs to be filled (key layer segment, the key layer segment is generally the possible reservoir layer segment or oil and gas display layer segment of the study), that is, determine the main drawing interval in the study area.

[0050] Step 3: Click the Enable floating toolbar button in the upper right corner of the window. The floating toolbar button solution further improves the flexibility and efficiency of the logging curve filling process.

[0051] Step 4: Click the density curve (second curve) head with the mouse and pause for a moment, that is, the second curve is positioned. At this time, the floating tool button will appear.

[0052] Step 5: Select the Quick Right Fill button in the floating toolbar (i.e., receive the Quick Right Fill trigger instruction from the user). Figure 2ASelect the compensation density curve in the pop-up floating toolbar. Select the Quick Right Fill button. You can see in the drawing window that the curve has completed the quick right filling, that is, the first preset mark is filled from the compensation density curve to the right boundary of the track. For example, Figure 2A In the floating toolbar, select the Quick Left Fill button (receive the user's Quick Left Fill trigger instruction), Figure 2B Select the neutron curve in the pop-up floating toolbar, and then select the Quick Left Fill button to fill the left edge of the neutron curve to the second preset mark specified by the user, for example Figure 2B The small check mark shown. That is, for the layer section under study, the key layer section is selected and the curve is quickly filled. In addition, the first preset mark and the second preset mark can also be different colors, such as red, blue, etc.

[0053] Step 6: In the well logging diagram, the user points the mouse to any closed position of the neutron curve and the density curve (a closed area is a closed graphic area formed by the intersection of two curves, such as Figure 2C shown).

[0054] Step 7: Pause for a moment and then click the left mouse button.

[0055] Step 8: In the pop-up closed area filling interface, click the mouse.

[0056] Step 9: Click the closed area with the mouse, and the fill style interface will pop up. You can modify the fill style (the style can be determined according to the preset fill strategy), that is, select a closed area and quickly close and fill the curve.

[0057] In step 6, the specific implementation process is as follows: the user first uses the mouse to locate the two curves, and then the upper and lower intersection points (the first intersection point and the second intersection point) of the two curves are automatically found. The closed interval (closed area) can be calculated based on the two intersection points and the curve data, and then the closed area is filled according to the specified rules (which can be a preset filling strategy). For example, the two curves in the embodiment of the present invention are the compensated neutron curve and the compensated density curve. Figure 2C shown.

[0058] The fast filling processing method proposed in the embodiment of the present invention can quickly implement various filling methods through software (the logging curve filling processing method in the embodiment of the present invention), and the filling efficiency is significantly improved compared with other methods. It is also the first time that interactive closed area filling is realized in logging software.

[0059] In summary, the method for quickly filling logging curves involved in the embodiment of the present invention, in the process of oil logging drawing, for the selection of key layers, generally adopts the method of curve filling to quickly locate the main research layer segment, especially the closed area filling of the neutron density curve can help users quickly locate or mark the gas layer. The technical means provided by the logging curve filling processing method provided by the embodiment of the present invention can quickly realize the filling of logging curves and improve the efficiency of scientific research work. This mode highlights the key layers, has a simple operation process, clear logic, and various filling methods. It is suitable for implementation in oil logging software and provides a graphical basis for users to quickly select key layers.

[0060] The present invention also provides a logging curve filling processing device, as described in the following embodiments. Since the principle of the device to solve the problem is similar to that of the logging curve filling processing method, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0061] Figure 5 FIG. 1 is a schematic diagram of the structure of the logging curve filling processing device in an embodiment of the present invention. Figure 5 As shown, the device comprises:

[0062] Acquisition unit 01, used to acquire conventional logging data of a single well in the study area;

[0063] Determining unit 02, used to determine the geological characteristics and logging response law of the study area according to the logging data, and determine the main mapping interval in the study area according to the geological characteristics and logging response law of the study area;

[0064] The first filling processing unit 03 is used to determine the key layer segment from the main drawing interval for the layer segment under study, and perform curve filling on the key layer segment;

[0065] The second filling processing unit 04 is used to identify a closed area and perform curve closed filling on the closed area.

[0066] In one embodiment, the first filling processing unit may be specifically used for:

[0067] When the first curve is positioned, upon receiving a quick left-fill trigger instruction from the user, a left-fill process is performed;

[0068] When the second curve is located, upon receiving a quick right-fill trigger instruction from the user, right-fill processing is performed.

[0069] In one embodiment, the second filling processing unit may be specifically used for:

[0070] receiving a user's operation instruction for positioning the first curve and the second curve;

[0071] After the first curve and the second curve are positioned according to the operation instruction, searching for a first intersection point and a second intersection point of the first curve and the second curve;

[0072] A closed area is identified according to the first intersection point, the second intersection point, and the curve data, and the closed area is filled with a curve according to a preset filling strategy.

[0073] In one embodiment, the first curve may be a neutron curve; and the second curve may be a density curve.

[0074] An embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned logging curve filling processing method when executing the computer program.

[0075] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above-mentioned logging curve filling processing method.

[0076] In the embodiment of the present invention, the well logging curve filling processing scheme is compared with the technical scheme in the prior art that the curve filling steps of the entire well section are cumbersome, the filling efficiency is low, and the filling according to the specified area position is not realized, which greatly restricts the work efficiency of well logging scientific research. By: acquiring conventional well logging data of a single well in the study area; determining the geological characteristics and logging response laws of the study area according to the logging data, and determining the main drawing intervals in the study area according to the geological characteristics and logging response laws of the study area; for the layer section under study, determining the key layer section from the main drawing interval, and performing curve filling on the key layer section; identifying the closed area, and performing curve closing filling on the closed area, efficient well logging curve filling processing can be achieved, so as to help well logging researchers quickly locate the target reservoir or oil and gas containing layer section, thereby improving the work efficiency of well logging researchers.

[0077] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0078] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0079] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0080] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0081] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A logging curve filling processing method, characterized in that: include: Obtain conventional logging data of single wells in the study area; According to the logging data, the geological characteristics and logging response law of the study area are determined, and the main mapping interval in the study area is determined according to the geological characteristics and logging response law of the study area; the main mapping interval is the target layer section of the study; For the studied layer section, a key layer section is determined from the main drawing interval, and curve filling is performed on the key layer section, which includes: when the first curve is located, upon receiving a user's quick left filling trigger instruction, a left filling process is performed; when the second curve is located, upon receiving a user's quick right filling trigger instruction, a right filling process is performed; the key layer section is the studied reservoir layer section or the oil and gas display layer section; the first curve is a neutron curve; the second curve is a density curve; Identify a closed area and fill the closed area with a curve, which includes: receiving a user's operation instruction to locate a first curve and a second curve; after completing the positioning of the first curve and the second curve according to the operation instruction, find the first intersection point and the second intersection point of the first curve and the second curve; identify the closed area according to the first intersection point and the second intersection point, as well as the curve data, and fill the closed area with a curve according to a preset filling strategy; the closed area is a closed graphic area formed by the intersection of two curves.

2. A logging curve filling processing device, characterized in that: include: An acquisition unit, used to acquire conventional logging data of a single well in the study area; A determination unit is used to determine the geological characteristics and logging response law of the study area according to the logging data, and determine the main mapping interval in the study area according to the geological characteristics and logging response law of the study area; the main mapping interval is the target layer section of the study; The first filling processing unit is used to determine the key layer segment from the main drawing interval for the studied layer segment, and perform curve filling on the key layer segment, which includes: when the first curve is located, upon receiving the user's fast left filling trigger instruction, performing left filling processing; when the second curve is located, upon receiving the user's fast right filling trigger instruction, performing right filling processing; the key layer segment is the studied reservoir layer segment or the oil and gas display layer segment; the first curve is a neutron curve; the second curve is a density curve; The second filling processing unit is used to identify a closed area and perform curve closing filling on the closed area, which includes: receiving a user's operation instruction to locate a first curve and a second curve; after completing the positioning of the first curve and the second curve according to the operation instruction, searching for a first intersection point and a second intersection point of the first curve and the second curve; identifying a closed area according to the first intersection point and the second intersection point, and curve data, and performing curve closing filling on the closed area according to a preset filling strategy; a closed area is a closed graphic area formed by the intersection of two curves.

3. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method of claim 1 is implemented.

4. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for executing the method of claim 1.

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