A method and apparatus for determining the range of fracture zones in ultra-deep strike-slip fracture control.

Abstract

This invention discloses a method and apparatus for determining the extent of a fractured zone controlled by an ultra-deep strike-slip fracture. The method includes: determining the top and bottom vertical depths of an oil and gas reservoir controlled by an ultra-deep strike-slip fracture based on well logging data; determining the top and bottom closure distances of the oil and gas reservoir based on comprehensive well logging data; determining the vertical thickness of the fractured zone based on the top and bottom vertical depths; determining the horizontal width of the fractured zone based on the top and bottom closure distances; and determining the extent of the fractured zone controlled by the ultra-deep strike-slip fracture based on the vertical thickness and horizontal width of the fractured zone. Using the technical solution of this application, the extent of the fractured zone can be determined based on relatively accurate vertical thickness and horizontal width, thereby reducing system calculation errors, improving the accuracy of calculation results, and making the determined extent of the fractured zone more consistent with the actual geological conditions.

Description

Technical Field

[0001] This invention relates to the field of reservoir exploration technology, and in particular to a method and apparatus for determining the range of fracture zones in ultra-deep strike-slip fracture control. Background Technology

[0002] With the acceleration of exploration and development, well control along strike-slip fault zones is relatively high. Due to the influence of strike-slip faults, the determination of the range of fracture zones, which are the main reservoir spaces, is crucial for the selection of potential zones for later exploration and development.

[0003] Methods for describing fracture zones or effective reservoir extent controlled by ultra-deep strike-slip faults primarily rely on seismic data. However, due to desert cover and the influence of overlying strata, the quality of seismic data is often insufficient for detailed reservoir characterization, especially during the evaluation and development phases, where higher precision in reservoir characterization is required. Relying solely on seismic inversion data is inadequate for production needs. Therefore, a method capable of accurately determining the extent of fracture zones is urgently needed. Summary of the Invention

[0004] This invention provides a method and apparatus for determining the extent of fracture zones controlled by ultra-deep strike-slip faults, in order to solve the problem that it is difficult to meet the requirements for fine reservoir characterization when determining the extent of fracture zones using only seismic data.

[0005] According to one aspect of the present invention, a method for determining the range of a fracture zone in ultra-deep strike-slip fracture control is provided, the method comprising:

[0006] Based on well logging data, determine the top and bottom vertical depths of the oil and gas reservoir controlled by the ultra-deep strike-slip fracture.

[0007] Based on the comprehensive logging data, determine the top closure distance and bottom closure distance of the oil and gas reservoir;

[0008] The vertical thickness of the crushing zone is determined based on the top and bottom vertical depths.

[0009] Determine the horizontal width of the breakage zone based on the top and bottom closing distances;

[0010] The range of the fracture zone controlled by ultra-deep strike-slip fracture is determined based on the vertical thickness and horizontal width of the fracture zone.

[0011] According to another aspect of the present invention, a device for determining the range of fracture zones in ultra-deep strike-slip fracture control is provided, the device comprising:

[0012] The vertical depth acquisition module is used to determine the top and bottom vertical depths of oil and gas reservoirs under ultra-deep strike-slip fracture control based on well logging data.

[0013] The closure distance determination module is used to determine the top closure distance and bottom closure distance of the oil and gas reservoir based on comprehensive logging data.

[0014] The crushing zone thickness determination module is used to determine the vertical thickness of the crushing zone based on the top vertical depth and the bottom vertical depth.

[0015] The crushing band width determination module is used to determine the horizontal width of the crushing band based on the top closing distance and the bottom closing distance;

[0016] The crushing range determination module is used to determine the range of the crushing zone controlled by ultra-deep strike-slip fracture based on the vertical thickness and horizontal width of the crushing zone.

[0017] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0018] At least one processor; and

[0019] A memory that is communicatively connected to at least one processor; wherein,

[0020] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the method for determining the fracture zone range of ultra-deep strike-slip fracture control according to any embodiment of the present invention.

[0021] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for causing a processor to execute and implement the method for determining the fracture zone range of ultra-deep strike-slip fracture control according to any embodiment of the present invention.

[0022] According to the technical solution of this invention, by determining the top and bottom vertical depths of the oil and gas layer controlled by ultra-deep strike-slip fractures based on well logging data, the determined top and bottom vertical depths are more consistent with the actual geological conditions, thereby reducing systematic errors. By determining the top and bottom closure distances of the oil and gas layer based on comprehensive well logging data, the determination of the top and bottom closure distances can be based on the actual geological conditions, improving the accuracy of the determination results. By determining the vertical thickness of the fracture zone based on the top and bottom vertical depths, and the horizontal width of the fracture zone based on the top and bottom closure distances, the determined horizontal width and vertical thickness of the fracture zone are relatively accurate. By determining the range of the fracture zone controlled by ultra-deep strike-slip fractures based on the vertical thickness and horizontal width of the fracture zone, the range of the fracture zone controlled by ultra-deep strike-slip fractures can be determined based on a relatively accurate vertical thickness and horizontal width of the fracture zone, thereby reducing systematic calculation errors, improving the accuracy of calculation results, and making the determined range of the fracture zone more consistent with the actual geological conditions.

[0023] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a flowchart of a method for determining the fracture zone range in ultra-deep strike-slip fracture control according to Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of well logging data applicable to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of a vertical projection of a wellbore applicable to an embodiment of the present invention;

[0028] Figure 4 This is a flowchart of another method for determining the range of fracture zone in ultra-deep strike-slip fracture control according to Embodiment 2 of the present invention;

[0029] Figure 5This is a schematic diagram illustrating the process of determining the vertical thickness and horizontal width of the target fracture zone in the event of a venting loss occurring outside the top to bottom range of an oil and gas reservoir, as applicable to embodiments of the present invention.

[0030] Figure 6 This is a schematic diagram illustrating the determination of the first horizontal width when the top and bottom range of the oil layer is less than the distance between the AB target points, as described in the embodiments of the present invention.

[0031] Figure 7 This is a schematic diagram of a device for determining the range of fracture zones in ultra-deep strike-slip fracture control according to Embodiment 3 of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of an electronic device for determining the range of the fracture zone in implementing the ultra-deep strike-slip fracture control method of the present invention. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Example 1

[0036] Figure 1This invention provides a flowchart of a method for determining the range of a fracture zone controlled by an ultra-deep strike-slip fracture, according to Embodiment 1. This embodiment is applicable to situations requiring a relatively accurate determination of the fracture zone range. The method can be executed by a device for determining the range of a fracture zone controlled by an ultra-deep strike-slip fracture. This device can be implemented in hardware and / or software and can be configured in an electronic device with data processing capabilities. Figure 1 As shown, the method includes:

[0037] S110. Based on well logging data, determine the top and bottom vertical depths of the oil and gas reservoir controlled by ultra-deep strike-slip fractures.

[0038] Figure 2 This is a schematic diagram of well logging data applicable to an embodiment of the present invention. See also... Figure 2 Well logging data refers to measurements taken during drilling, such as gamma ray, shallow and deep resistivity, acoustic waves, and spontaneous potential. These measurements can be used to interpret the top and bottom depths of the oil and gas reservoir in a drilled well, referencing interpretation templates for reservoirs and oil and gas formations in similar areas. Top and bottom depths are specific numerical values ​​describing the vertical depth of the top and bottom of the oil and gas reservoir.

[0039] After drilling has entered the oil and gas layer, well logging can be performed to obtain well logging data. Based on the specific values ​​in the well logging data, the specific values ​​of the top and bottom vertical depths of the oil and gas layer under the control of ultra-deep strike-slip fractures can be determined.

[0040] By using well logging data, the top and bottom vertical depths of the oil and gas reservoirs controlled by ultra-deep strike-slip fractures are determined, making the determined top and bottom vertical depths more consistent with the actual geological conditions, thereby reducing systematic errors.

[0041] S120. Based on the comprehensive logging data, determine the top closure distance and bottom closure distance of the oil and gas reservoir.

[0042] Integrated logging data refers to data collected during the drilling process that reflects formation and oil and gas shows, mainly including: gas logging shows, cuttings, carbonate rock content, and oil layer shows. Closure distance is the horizontal displacement at the end of drilling. Top closure distance is the horizontal displacement of the top of the oil and gas layer at the end of drilling. Bottom closure distance is the horizontal displacement of the bottom of the oil and gas layer at the end of drilling.

[0043] Figure 3 This is a schematic diagram of a vertical projection of a wellbore applicable to an embodiment of the present invention. See also... Figure 3After drilling has entered the oil and gas layer, the drilling can be monitored to obtain comprehensive logging data. Based on the vertical projection map of the wellbore, the vertical depth of the top and bottom of the oil and gas layer encountered by the drilling can be determined, as well as the depth of the top and bottom of the oil and gas layer in the drilling trajectory measured by the drilling trajectory. In this way, the top closure distance and bottom closure distance of the oil and gas layer can be calculated.

[0044] By using comprehensive logging data to determine the top and bottom closure distances of oil and gas reservoirs, the determination of these distances can be based on actual geological conditions, thus improving the accuracy of the results.

[0045] S130. Determine the vertical thickness of the crushing zone based on the top vertical depth and the bottom vertical depth.

[0046] A fracture zone can be a region containing fault breccia, cataclastic rocks, and fault gouge, formed by a fault. The vertical thickness of a fracture zone refers to its thickness in the vertical direction.

[0047] After determining the top and bottom vertical depths, the vertical thickness of the crushing zone can be calculated based on the specific data of the top and bottom vertical depths, thereby determining the vertical thickness of the crushing zone.

[0048] For example, if the vertical depth at the top is 10m and the vertical depth at the bottom is 20m, then by subtracting the vertical depth at the top from the vertical depth at the bottom, i.e., 20m-10m, we can obtain a vertical thickness of 10m for the fracture zone.

[0049] S140. Determine the horizontal width of the breakage zone based on the top closing distance and the bottom closing distance.

[0050] After determining the top closing distance and the bottom closing distance, the horizontal width of the breakage zone can be calculated based on the specific data of the top closing distance and the bottom closing distance, thereby determining the horizontal width of the breakage zone.

[0051] For example, if the top closing distance is 10m and the bottom closing distance is 20m, then by subtracting the top closing distance from the bottom closing distance, i.e., 20m-10m, the horizontal width of the break zone is 10m.

[0052] The vertical thickness of the crushing zone is determined based on the top and bottom vertical depths, and the horizontal width of the crushing zone is determined based on the top and bottom closing distances, so that the determined horizontal width and vertical thickness of the crushing zone can be relatively accurate.

[0053] S150. Determine the range of the fracture zone controlled by ultra-deep strike-slip fracture based on the vertical thickness and horizontal width of the fracture zone.

[0054] After determining the vertical thickness and horizontal width of the fracture zone, the thickness and width of the fracture zone at the drilling location can be determined, and the range of the fracture zone controlled by the ultra-deep strike-slip fracture can be determined.

[0055] By determining the range of the fracture zone controlled by the ultra-deep strike-slip fault based on the vertical thickness and horizontal width of the fracture zone, the range of the fracture zone controlled by the ultra-deep strike-slip fault can be determined based on more accurate vertical thickness and horizontal width of the fracture zone. This reduces the calculation error of the system, improves the accuracy of the calculation results, and makes the determined range of the fracture zone more consistent with the actual geological conditions.

[0056] According to the technical solution of this invention, by determining the top and bottom vertical depths of the oil and gas layer controlled by ultra-deep strike-slip fractures based on well logging data, the determined top and bottom vertical depths are more consistent with the actual geological conditions, thereby reducing systematic errors. By determining the top and bottom closure distances of the oil and gas layer based on comprehensive well logging data, the determination of the top and bottom closure distances can be based on the actual geological conditions, improving the accuracy of the determination results. By determining the vertical thickness of the fracture zone based on the top and bottom vertical depths, and the horizontal width of the fracture zone based on the top and bottom closure distances, the determined horizontal width and vertical thickness of the fracture zone are relatively accurate. By determining the range of the fracture zone controlled by ultra-deep strike-slip fractures based on the vertical thickness and horizontal width of the fracture zone, the range of the fracture zone controlled by ultra-deep strike-slip fractures can be determined based on a relatively accurate vertical thickness and horizontal width of the fracture zone, thereby reducing systematic calculation errors, improving the accuracy of calculation results, and making the determined range of the fracture zone more consistent with the actual geological conditions.

[0057] Example 2

[0058] Figure 4 This invention provides a flowchart of another method for determining the range of the fracture zone in ultra-deep strike-slip fracture control. This embodiment further optimizes the process described in the previous embodiments after determining the horizontal width of the fracture zone based on the top and bottom closure distances. This embodiment can be combined with various optional solutions from one or more of the above embodiments. Figure 4 As shown, the following steps may be included:

[0059] S2010. Based on well logging data, determine the top and bottom vertical depths of the oil and gas reservoir controlled by ultra-deep strike-slip fractures.

[0060] S2020. Based on the comprehensive logging data, determine the top closure distance and bottom closure distance of the oil and gas reservoir.

[0061] S2030. Determine the vertical thickness of the crushing zone based on the top vertical depth and the bottom vertical depth.

[0062] S2040. Determine the horizontal width of the breakage zone based on the top closing distance and the bottom closing distance.

[0063] S2050. Based on well completion data, determine the first vertical thickness of Class I and Class II reservoirs in the oil and gas layer.

[0064] Well completion data can be obtained by organizing and analyzing various data obtained during the drilling process after drilling is completed, and comprehensively judging the downhole geology and the conditions of oil, gas and water formations.

[0065] The first vertical thickness can be the vertical depth from the top to the bottom of the oil and gas reservoir determined by the vertical thickness of Class I and Class II reservoirs.

[0066] After the well is completed, the depths of the top and bottom of Class I and Class II reservoirs along the well trajectory are determined by monitoring the completion data.

[0067] At this point, the thickness of the Class I reservoir in the vertical direction can be determined by monitoring the top and bottom depths of the Class I reservoir along the well trajectory and the well trajectory itself.

[0068] Similarly, the thickness of the Class II reservoir in the vertical direction can be determined, and the thicknesses of the Class I and Class II reservoirs in the vertical direction can be calculated to obtain the first vertical thickness.

[0069] By determining the first vertical thickness of Class I and Class II reservoirs in the oil and gas layer based on well completion data, the thickness of the fracture zone in the vertical direction can be determined, avoiding the inability to determine the vertical thickness of the fracture zone through the top and bottom vertical depths during the monitoring process due to lack of data.

[0070] S2060. Based on the comprehensive logging data, determine the second vertical thickness of the fracture zone under the control of the ultra-deep strike-slip fracture.

[0071] The second vertical thickness can be the thickness of the fracture zone in the horizontal direction determined by integrated logging data.

[0072] After obtaining the comprehensive logging data, the vertical depth of the top and bottom of the oil and gas layer can be calculated based on the comprehensive logging data, thereby determining the second vertical thickness of the fracture zone under the control of ultra-deep strike-slip fracture.

[0073] In one alternative approach, after determining the second vertical thickness of the fracture zone controlled by the ultra-deep strike-slip fracture based on integrated logging data, the method further includes steps A1-A2:

[0074] Step A1: Based on the monitoring data while drilling, determine whether there are drilling venting sections and drilling lost circulation sections of oil and gas reservoirs.

[0075] Step A2: If they exist, determine the first top depth and the first bottom depth of the wellbore venting section, and the second top depth and the second bottom depth of the wellbore leakage section based on the drilling monitoring data.

[0076] Accordingly, based on the vertical thickness and horizontal width of the target fracture zone, the range of the fracture zone controlled by the ultra-deep strike-slip fracture is determined, including:

[0077] The range of the fracture zone controlled by the ultra-deep strike-slip fracture is determined based on the first top depth, the first bottom depth, the second top depth, the second bottom depth, the vertical thickness of the target fracture zone, and the horizontal width of the target fracture zone.

[0078] A venting section is a venting section encountered during the drilling process. A lost circulation section is a lost circulation section encountered during the drilling process.

[0079] During drilling, there is a possibility that the drill bit may enter the venting or leakage section. At this time, it is necessary to determine whether the venting or leakage section has occurred during the drilling process.

[0080] If a wellbore venting section and a wellbore loss section are detected, it is necessary to determine the first top and first bottom depths of the wellbore venting section and the second top and second bottom depths of the wellbore loss section based on the monitoring data while drilling, so as to determine whether the wellbore venting section and the wellbore loss section will affect the final determined range of the fracture zone.

[0081] Therefore, it is necessary to determine the range of the fracture zone controlled by the ultra-deep strike-slip fracture based on the first top depth, the first bottom depth, the second top depth, the second bottom depth, the vertical thickness of the target fracture zone, and the horizontal width of the target fracture zone.

[0082] Figure 5 This is a schematic diagram illustrating the process for determining the vertical thickness and horizontal width of the target fracture zone in the event of a venting loss occurring outside the top to bottom range of an oil and gas reservoir, as applicable to embodiments of the present invention. See also... Figure 5 If a venting occurs outside the top to bottom range of the oil and gas reservoir, the vertical thickness of the target fracture zone will be determined by using the first top depth of the venting point and the vertical thickness of the target fracture zone, thus redetermining the thickness of the fracture zone in the vertical direction.

[0083] Similarly, it is necessary to redetermine the width of the fracture zone in the horizontal direction, and determine the range of the fracture zone controlled by the ultra-deep strike-slip fracture based on the redetermined thickness and width.

[0084] Similarly, a method can be derived for determining the range of the fracture zone controlled by ultra-deep strike-slip fractures when leakage occurs outside the range from the top to the bottom of the oil and gas reservoir.

[0085] S2070. Determine the first horizontal width of the fracture zone based on the target coordinates.

[0086] The target point coordinates can be the coordinates of the well when drilling into the target formation. The first horizontal width can be the width of the fracture zone defined by the target point in the horizontal direction. The target formation can be the rock formation or location that the drillers expect to drill into.

[0087] Figure 6 This is a schematic diagram illustrating the determination of the first horizontal width when the top and bottom range of the oil layer is less than the distance to target point AB, as applicable to embodiments of the present invention. (See also...) Figure 6 Besides the methods mentioned above for determining the width of the fracture zone in the horizontal direction, it can also be determined using target point coordinates. In the figure, target point A can be the target point for drilling into the oil and gas reservoir, and target point B can be the target point for drilling in the horizontal direction.

[0088] At this point, it can be seen from the figure that the range of the top and bottom of the oil layer is smaller than the distance between the AB target points. At this point, the first horizontal width of the fracture zone will be determined by the target point coordinates of the AB target points.

[0089] In one alternative approach, the first horizontal width of the fracture zone is determined based on the target coordinates, which may include B1-B3:

[0090] Step B1: Determine the wellhead coordinates of the target well based on the well completion data.

[0091] Step B2: Determine the target point coordinates of the target well based on the well completion data.

[0092] Step B3: Determine the first horizontal width of the fracture zone based on the wellhead coordinates and target point coordinates.

[0093] The target well can be a well used to determine the extent of the fractured zone. The wellhead coordinates can be the location of the wellhead selected when drilling begins for the target well.

[0094] After obtaining the well completion data, the target point coordinates of the target well can be determined, including but not limited to target point A and target point B, as well as the wellhead coordinates of the target well.

[0095] In one alternative approach, the expression for calculating the first horizontal width is:

[0096] When the well trajectory is an inclined well trajectory, the first horizontal width is:

[0097] First horizontal width = L w0 -L A0

[0098] When the well trajectory is a horizontal well trajectory, the first horizontal width is:

[0099] First horizontal width = L B0 -L A0

[0100] In the formula: L A0 L represents the horizontal distance from the wellhead to target point A encountered during drilling; B0 L represents the horizontal distance from target point B encountered during drilling to the wellhead; W0 This indicates the horizontal distance between the bottom of the well and the wellhead encountered during drilling.

[0101] At this point, the first horizontal width of the fracture zone can be determined by calculation using a formula.

[0102] The method for determining this is as follows:

[0103]

[0104] When the well trajectory is an inclined well trajectory, the first horizontal width is:

[0105] First horizontal width = L w0 -L A0

[0106] When the well trajectory is a horizontal well trajectory, the first horizontal width is:

[0107] First horizontal width = L B0 -L A0

[0108] In the formula: L A0 L represents the horizontal distance from the wellhead to target point A encountered during drilling; B0 L represents the horizontal distance from target point B encountered during drilling to the wellhead; W0 Indicates the horizontal distance from the bottom of the well to the wellhead during drilling.

[0109] x A y A The x and y coordinates of target point A are represented; B y B The x and y coordinates of target point B are represented; w y w This represents the x-coordinate and y-coordinate of the bottom of the well.

[0110] S2080. Determine the target vertical thickness of the crushing zone based on the first vertical thickness, the second vertical thickness, and the vertical thickness of the crushing zone.

[0111] The target vertical thickness of the fracture zone can be the vertical thickness that best matches the actual geological conditions among the determined first vertical thickness, second vertical thickness, and fracture zone vertical thickness.

[0112] After obtaining the first vertical thickness, the second vertical thickness, and the vertical thickness of the crushing zone, since the first vertical thickness, the second vertical thickness, and the vertical thickness of the crushing zone are all determined vertical thicknesses of the crushing zone, it is necessary to select the vertical thickness of the crushing zone that best reflects the actual situation.

[0113] Therefore, it is necessary to compare the first vertical thickness, the second vertical thickness, and the vertical thickness of the fracture zone to determine the most accurate vertical thickness as the target vertical thickness of the fracture zone.

[0114] By determining the target vertical thickness of the fracture zone based on the first vertical thickness, the second vertical thickness, and the vertical thickness of the fracture zone, it is possible to avoid having to use other methods to determine the vertical thickness of the fracture zone when one method cannot calculate it.

[0115] In one alternative approach, determining the target vertical thickness of the fracture zone based on the first vertical thickness, the second vertical thickness, and the vertical thickness of the fracture zone may include steps C1-C3:

[0116] Step C1: If the vertical thickness of the crushing zone exists, then determine the vertical thickness of the crushing zone as the target vertical thickness of the crushing zone.

[0117] Step C2: If the vertical thickness of the fracture zone does not exist and the first vertical thickness does exist, then the first vertical thickness is determined as the target vertical thickness of the fracture zone.

[0118] Step C3: If the vertical thickness of the fracture zone is not determined and the first vertical thickness is not determined, then the second vertical thickness is determined as the target vertical thickness of the fracture zone.

[0119] Since the methods for determining the first vertical thickness, the second vertical thickness, and the vertical thickness of the fracture zone are different, the accuracy of the data is different. Therefore, it is necessary to select the vertical thickness with the highest accuracy as the target vertical thickness of the fracture zone.

[0120] Therefore, when a vertical thickness of the fracture zone exists, the vertical thickness of the fracture zone will be determined as the target vertical thickness of the fracture zone. However, when determining the vertical thickness, there is a possibility that the vertical thickness of the fracture zone cannot be calculated. In this case, if the vertical thickness of the fracture zone does not exist but a first vertical thickness exists, then the first vertical thickness will be determined as the target vertical thickness of the fracture zone.

[0121] Similarly, if the vertical thickness of the fracture zone cannot be calculated and the first vertical thickness also cannot be calculated, then the second vertical thickness is determined as the target vertical thickness of the fracture zone.

[0122] S2090. Determine the target horizontal width of the fracture zone based on the first horizontal width and the horizontal width of the fracture zone.

[0123] The horizontal width of the target fracture zone can be either the first horizontal width or the horizontal width of the fracture zone that best reflects the actual geological conditions.

[0124] Because the methods for determining the first horizontal width and the horizontal width of the fracture zone are different, the determined first horizontal width and the horizontal width of the fracture zone will not match the horizontal width of the fracture zone under actual geological conditions. Therefore, it is necessary to select the first horizontal width and the horizontal width of the fracture zone to determine the horizontal width of the fracture zone that is more in line with the actual geological conditions, and use it as the target horizontal width of the fracture zone.

[0125] By determining the target fracture zone horizontal width based on the first horizontal width and the fracture zone horizontal width, the determination result with the highest accuracy can be selected as the target fracture zone horizontal width.

[0126] In one alternative approach, determining the target horizontal width of the fractured zone based on the first horizontal width and the horizontal width of the fractured zone may include steps D1-D2:

[0127] Step D1: If the horizontal width of the fracture zone exists, then determine the horizontal width of the fracture zone as the target horizontal width of the fracture zone.

[0128] Step D2: Otherwise, determine the first horizontal width as the target fracture zone horizontal width.

[0129] Because the methods for determining the first horizontal width and the horizontal width of the fracture zone are different, the accuracy of the determined first horizontal width and the horizontal width of the fracture zone in conforming to the actual geological conditions is different. Therefore, it is necessary to select the first horizontal width and the horizontal width of the fracture zone, and take the result that is more in line with the actual geological conditions as the target horizontal width of the fracture zone.

[0130] Therefore, when a horizontal width of the fractured zone exists, the horizontal width of the fractured zone will be determined as the target horizontal width of the fractured zone. When a horizontal width of the fractured zone does not exist, the first horizontal width will be determined as the target horizontal width of the fractured zone.

[0131] S2100. Determine the range of the fracture zone controlled by the ultra-deep strike-slip fracture based on the vertical thickness and horizontal width of the target fracture zone.

[0132] After determining the vertical thickness and horizontal width of the target fracture zone, the distribution of the fracture zone controlled by the ultra-deep strike-slip fracture in length and width can be determined, thereby determining the range of the fracture zone controlled by the ultra-deep strike-slip fracture.

[0133] According to the technical solution of the present invention, the target vertical thickness of the fractured zone is determined based on the first vertical thickness, the second vertical thickness, and the vertical thickness of the fractured zone. This avoids the need to use other methods to determine the vertical thickness of the fractured zone when one method cannot calculate it. Furthermore, the target horizontal width of the fractured zone is determined based on the first horizontal width and the horizontal width of the fractured zone, ensuring that the determination result with the highest accuracy is selected as the target horizontal width.

[0134] Example 3

[0135] Figure 7 This invention provides a structural block diagram of a device for determining the range of a fracture zone in ultra-deep strike-slip fracture control. This embodiment is applicable to situations requiring relatively accurate determination of the fracture zone range. This device for determining the range of a fracture zone in ultra-deep strike-slip fracture control can be implemented in hardware and / or software, and can be configured in an electronic device with data processing capabilities. Figure 7 As shown, the device for determining the range of the fracture zone in ultra-deep strike-slip fracture control according to this embodiment may include: a vertical depth acquisition module 310, a closure distance determination module 320, a fracture zone thickness determination module 330, a fracture zone width determination module 340, and a fracture range determination module 350. Wherein:

[0136] The vertical depth acquisition module 310 is used to determine the top and bottom vertical depths of the oil and gas layer under the control of ultra-deep strike-slip fractures based on well logging data.

[0137] The closure distance determination module 320 is used to determine the top closure distance and bottom closure distance of the oil and gas reservoir based on the comprehensive logging data.

[0138] The crushing zone thickness determination module 330 is used to determine the vertical thickness of the crushing zone based on the top vertical depth and the bottom vertical depth.

[0139] The crushing band width determination module 340 is used to determine the horizontal width of the crushing band based on the top closing distance and the bottom closing distance;

[0140] The crushing range determination module 350 is used to determine the range of the crushing zone controlled by ultra-deep strike-slip fracture based on the vertical thickness and horizontal width of the crushing zone.

[0141] Based on the above embodiments, optionally, after the broken bandwidth determination module 340, the device further includes:

[0142] The first thickness determination module is used to determine the first vertical thickness of Class I and Class II reservoirs in the oil and gas reservoir based on well completion data.

[0143] The second thickness determination module is used to determine the second vertical thickness of the fracture zone under the control of ultra-deep strike-slip fracture based on comprehensive logging data.

[0144] The first width determination module is used to determine the first horizontal width of the fracture zone based on the target point coordinates.

[0145] Correspondingly, the crushing range determination module 350 includes:

[0146] The vertical thickness determination unit is used to determine the target vertical thickness of the crushed zone based on the first vertical thickness, the second vertical thickness, and the vertical thickness of the crushed zone.

[0147] The target width determination unit is used to determine the target horizontal width of the fracture zone based on the first horizontal width and the horizontal width of the fracture zone;

[0148] The fracture zone determination unit is used to determine the range of the fracture zone controlled by the ultra-deep strike-slip fracture based on the vertical thickness and horizontal width of the target fracture zone.

[0149] Based on the above embodiments, optionally, the target width determination unit includes:

[0150] The first target determination sub-unit is used to determine the horizontal width of the fractured zone as the target horizontal width if the horizontal width of the fractured zone exists.

[0151] The second target determination sub-unit is used otherwise, the first horizontal width is determined as the horizontal width of the target fracture zone.

[0152] Based on the above embodiments, optionally, the vertical thickness determining unit includes:

[0153] The crushing thickness determination subunit is used to determine the vertical thickness of the crushing zone as the target vertical thickness if the vertical thickness of the crushing zone exists.

[0154] The first thickness selection sub-unit is used to determine the first vertical thickness as the target vertical thickness of the crushing zone if the vertical thickness of the crushing zone does not exist and the first vertical thickness does exist.

[0155] The second thickness selection sub-unit is used to determine the second vertical thickness as the target vertical thickness of the crushing zone if the vertical thickness of the crushing zone is not determined and the first vertical thickness is not determined.

[0156] Based on the above embodiments, optionally, after the second thickness determining module, the device further includes:

[0157] The lost-in-the-well section determination module is used to determine, based on monitoring while drilling data, whether there are well venting sections and well lost-in-the-well sections containing oil and gas reservoirs.

[0158] The top and bottom depth determination module is used to determine the first top depth and the first bottom depth of the well venting section, and the second top depth and the second bottom depth of the well leakage section, based on the drilling monitoring data, if they exist.

[0159] Correspondingly, the fragmentation area determination unit includes:

[0160] The fractured area acquisition sub-unit is used to determine the range of the fractured zone controlled by the ultra-deep strike-slip fracture based on the first top depth, the first bottom depth, the second top depth, the second bottom depth, the vertical thickness of the target fractured zone, and the horizontal width of the target fractured zone.

[0161] Based on the above embodiments, optionally, the first width determination module includes:

[0162] The wellhead coordinate determination unit is used to determine the wellhead coordinates of the target well based on the well completion data.

[0163] The target coordinate determination unit is used to determine the target coordinates of the target well based on the well completion data.

[0164] The first horizontal width determination unit is used to determine the first horizontal width of the fracture zone based on the wellhead coordinates and the target point coordinates.

[0165] Based on the above embodiments, optionally, the calculation expression for the first horizontal width is:

[0166] When the well trajectory is an inclined well trajectory, the first horizontal width is:

[0167] First horizontal width = L w0 -L A0

[0168] When the well trajectory is a horizontal well trajectory:

[0169] First horizontal width = L B0 -L A0

[0170] In the formula: L A0 L represents the horizontal distance from the wellhead to target point A encountered during drilling; B0 L represents the horizontal distance from target point B encountered during drilling to the wellhead; W0 This indicates the horizontal distance between the bottom of the well and the wellhead encountered during drilling.

[0171] The device for determining the range of fracture zone in ultra-deep strike-slip fracture control provided in this embodiment of the invention can execute the method for determining the range of fracture zone in ultra-deep strike-slip fracture control provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0172] Example 4

[0173] Figure 8 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0174] like Figure 8 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0175] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0176] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the method for determining the fracture zone range in ultra-deep strike-slip fracture control.

[0177] In some embodiments, the method for determining the fracture zone range of ultra-deep strike-slip fracture control can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method for determining the fracture zone range of ultra-deep strike-slip fracture control described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the method for determining the fracture zone range of ultra-deep strike-slip fracture control by any other suitable means (e.g., by means of firmware).

[0178] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0179] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0180] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0181] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0182] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0183] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0184] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0185] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for determining the range of fracture zones in ultra-deep strike-slip fracture control, characterized in that, include: Based on well logging data, determine the top and bottom vertical depths of the oil and gas reservoir controlled by the ultra-deep strike-slip fracture. Based on the comprehensive logging data, the top closure distance and bottom closure distance of the oil and gas reservoir are determined; The vertical thickness of the break zone is determined based on the top vertical depth and the bottom vertical depth; The horizontal width of the breakage zone is determined based on the top closing distance and the bottom closing distance; The range of the fracture zone controlled by the ultra-deep strike-slip fracture is determined based on the vertical thickness and horizontal width of the fracture zone. After determining the horizontal width of the fracture zone based on the top closure distance and the bottom closure distance, the method further includes: Based on the well completion data, determine the first vertical thickness of Class I and Class II reservoirs in the oil and gas reservoir; Based on comprehensive logging data, the second vertical thickness of the fracture zone under the control of ultra-deep strike-slip fracture was determined; The first horizontal width of the fracture zone is determined based on the target point coordinates; Accordingly, determining the range of the ultra-deep strike-slip fracture controlled by the fracture zone based on the vertical thickness and horizontal width of the fracture zone includes: The target vertical thickness of the crushing zone is determined based on the first vertical thickness, the second vertical thickness, and the vertical thickness of the crushing zone. The target horizontal width of the fracture zone is determined based on the first horizontal width and the horizontal width of the fracture zone. The range of the fracture zone controlled by the ultra-deep strike-slip fracture is determined based on the vertical thickness and horizontal width of the target fracture zone. Determining the target fracture zone horizontal width based on the first horizontal width and the fracture zone horizontal width includes: If the horizontal width of the fracture zone exists, then the horizontal width of the fracture zone is determined to be the target horizontal width of the fracture zone; Otherwise, the first horizontal width is determined to be the horizontal width of the target fracture zone; The step of determining the target vertical thickness of the fracture zone based on the first vertical thickness, the second vertical thickness, and the vertical thickness of the fracture zone includes: If the vertical thickness of the fracture zone exists, then the vertical thickness of the fracture zone is determined to be the target vertical thickness of the fracture zone; If the vertical thickness of the fracture zone does not exist and the first vertical thickness exists, then the first vertical thickness is determined to be the vertical thickness of the target fracture zone. If the vertical thickness of the fracture zone is not determined and the first vertical thickness is not determined, then the second vertical thickness is determined as the target vertical thickness of the fracture zone.

2. The method according to claim 1, characterized in that, After determining the second vertical thickness of the fracture zone controlled by the ultra-deep strike-slip fracture based on comprehensive logging data, the method further includes: Based on the monitoring data while drilling, determine whether there are drilling venting sections and drilling loss sections in the oil and gas reservoir; If they exist, the first top depth and the first bottom depth of the wellbore venting section, and the second top depth and the second bottom depth of the wellbore leakage section are determined based on the drilling monitoring data. Accordingly, determining the range of the fracture zone controlled by the ultra-deep strike-slip fracture based on the vertical thickness and horizontal width of the target fracture zone includes: The range of the fracture zone controlled by the ultra-deep strike-slip fracture is determined based on the first top depth, the first bottom depth, the second top depth, the second bottom depth, the vertical thickness of the target fracture zone, and the horizontal width of the target fracture zone.

3. The method according to claim 1, characterized in that, Determining the first horizontal width of the fracture zone based on the target point coordinates includes: Based on the well completion data, determine the wellhead coordinates of the target well; Based on the well completion data, determine the target point coordinates of the target well. The first horizontal width of the fracture zone is determined based on the wellhead coordinates and the target point coordinates.

4. The method according to claim 3, characterized in that, The expression for calculating the first horizontal width is: When the well trajectory is an inclined well trajectory, the first horizontal width is: First horizontal width = L w0 -L A0 When the well trajectory is a horizontal well trajectory: First horizontal width = L B0 -L A0 In the formula: L A0 L represents the horizontal distance from the wellhead to target point A encountered during drilling; B0 L represents the horizontal distance from target point B encountered during drilling to the wellhead; W0 This indicates the horizontal distance between the bottom of the well and the wellhead encountered during drilling.

5. A device for determining the range of fracture zones in ultra-deep strike-slip fracture control, characterized in that, include: The vertical depth acquisition module is used to determine the top and bottom vertical depths of oil and gas reservoirs under ultra-deep strike-slip fracture control based on well logging data. The closure distance determination module is used to determine the top closure distance and bottom closure distance of the oil and gas reservoir based on comprehensive logging data. The crushing zone thickness determination module is used to determine the vertical thickness of the crushing zone based on the top vertical depth and the bottom vertical depth. The breakage band width determination module is used to determine the horizontal width of the breakage band based on the top closing distance and the bottom closing distance; The crushing range determination module is used to determine the range of the crushing zone controlled by ultra-deep strike-slip fracture based on the vertical thickness of the crushing zone and the horizontal width of the crushing zone. The device further includes, after the broken bandwidth determination module, the following: The first thickness determination module is used to determine the first vertical thickness of Class I and Class II reservoirs in the oil and gas reservoir based on well completion data. The second thickness determination module is used to determine the second vertical thickness of the fracture zone under the control of ultra-deep strike-slip fracture based on comprehensive logging data. The first width determination module is used to determine the first horizontal width of the fracture zone based on the target point coordinates. Correspondingly, the crushing range determination module includes: The vertical thickness determination unit is used to determine the target vertical thickness of the crushed zone based on the first vertical thickness, the second vertical thickness, and the vertical thickness of the crushed zone. The target width determination unit is used to determine the target horizontal width of the fracture zone based on the first horizontal width and the horizontal width of the fracture zone; The fracture zone determination unit is used to determine the range of the fracture zone controlled by the ultra-deep strike-slip fracture based on the vertical thickness and horizontal width of the target fracture zone. The target width determination unit includes: The first target determination sub-unit is used to determine the horizontal width of the fractured zone as the target horizontal width if the horizontal width of the fractured zone exists. The second target determination sub-unit is used to determine the first horizontal width as the target fracture zone horizontal width if otherwise. The vertical thickness determination unit includes: The crushing thickness determination subunit is used to determine the vertical thickness of the crushing zone as the target vertical thickness if the vertical thickness of the crushing zone exists. The first thickness selection sub-unit is used to determine the first vertical thickness as the target vertical thickness of the crushing zone if the vertical thickness of the crushing zone does not exist and the first vertical thickness does exist. The second thickness selection sub-unit is used to determine the second vertical thickness as the target vertical thickness of the crushing zone if the vertical thickness of the crushing zone is not determined and the first vertical thickness is not determined.

6. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the method for determining the fracture zone range of ultra-deep strike-slip fracture control as described in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the method for determining the fracture zone range of ultra-deep strike-slip fracture control as described in any one of claims 1-4.

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