Method and device for determining landing target point of horizontal well

Abstract

The present invention discloses a method and apparatus for determining a horizontal well landing target. The method comprises: determining target data for a completed vertical well in a target block and while-drilling data for a target horizontal well; determining at least one marker layer in the target block and the formation dip of the marker layer based on the target data and the while-drilling data; determining a target reference well based on the target data, the while-drilling data, and the formation dip; and determining the target landing target of the target horizontal well in the target formation based on the target data, the while-drilling data, the nearest marker layer, and the dips of each formation of the target reference well. By implementing this solution, the efficiency and accuracy of horizontal well landing target prediction can be improved, which can facilitate early adjustment of the horizontal well trajectory and improve the success rate of smooth trajectory landing.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling exploration and development, and in particular to a method and device for determining a landing target point of a horizontal well. Background Art

[0002] As the pace of exploration for unconventional oil and gas resources accelerates, the number of horizontal wells drilled annually increases year by year. The judgment of the spatial position of the landing target is crucial to the safe landing of the horizontal well and ensuring the length of the horizontal section.

[0003] In related technologies, the scheme for determining the landing target of horizontal wells, due to the complex geological conditions and the differences in experience of on-site guidance engineers, considers relatively few factors affecting the landing target, which brings great difficulty and risk of misjudgment to the judgment of the landing target of horizontal wells. It may cause the horizontal well to go off the target during the drilling process, directly affecting the exploration efficiency of unconventional oil and gas. Summary of the Invention

[0004] The present invention provides a method and device for determining a horizontal well landing target point, which can improve the efficiency and accuracy of horizontal well landing target point prediction, facilitate early adjustment of the horizontal well trajectory, and improve the success rate of smooth trajectory landing.

[0005] According to one aspect of the present invention, a method for determining a landing target point of a horizontal well is provided, the method comprising:

[0006] Determine target data of completed vertical wells and drilling-while-drilling data of target horizontal wells in the target block; the target data includes at least one of mud logging data, well logging data, and drilling data;

[0007] Determine at least one marker layer of the target block and the stratigraphic dip of the marker layer according to the target data and the drilling data;

[0008] Determine a target reference well based on the target data, the drilling data, and the formation dip;

[0009] The target landing point of the target horizontal well in the target formation is determined based on the target data of the target reference well, the drilling data, the nearest marker layer and the inclination of each formation; the target formation is the formation to which the landing point of the target horizontal well belongs; the nearest marker layer is the marker layer closest to the target formation.

[0010] According to another aspect of the present invention, a device for determining a landing target point of a horizontal well is provided, the device comprising:

[0011] A target data and while-drilling data determination module is used to determine target data of completed vertical wells and while-drilling data of target horizontal wells in a target block; the target data includes at least one of mud logging data, well logging data, and drilling data;

[0012] a marker layer and formation dip angle determination module, configured to determine at least one marker layer of the target block and the formation dip angle of the marker layer according to the target data and the drilling-while-drilling data;

[0013] a target reference well determination module, configured to determine a target reference well based on the target data, the while-drilling data, and the formation dip;

[0014] A landing target point determination module is used to determine the target landing target point of the target horizontal well in the target formation based on the target data of the target reference well, the drilling data, the nearest marker layer and the inclination of each formation; the target formation is the formation to which the landing target point of the target horizontal well belongs; the nearest marker layer is the marker layer closest to the target formation.

[0015] According to another aspect of the present invention, an electronic device is provided, comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor. The computer program is executed by the at least one processor so that the at least one processor can execute the method for determining the landing target point of a horizontal well as described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for determining a horizontal well landing target point according to any embodiment of the present invention when executed.

[0020] The technical solution of the embodiment of the present invention determines the target data of the completed vertical wells in the target block and the while-drilling data of the target horizontal wells; the target data includes at least one of the mud logging data, well logging data, and drilling data; at least one marker layer and the formation dip of the marker layer in the target block are determined based on the target data and the while-drilling data; a target reference well is determined based on the target data, the while-drilling data, and the formation dip; the target landing point of the target horizontal well in the target formation is determined based on the target data, the while-drilling data, the nearest marker layer, and the dips of each formation of the target reference well; the target formation is the formation to which the landing point of the target horizontal well belongs; the nearest marker layer is the marker layer closest to the target formation. By implementing the solution provided by the embodiment of the present invention, the efficiency and accuracy of horizontal well landing target prediction can be improved, which can facilitate early adjustment of the horizontal well trajectory and improve the success rate of smooth trajectory landing.

[0021] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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.

[0023] Figure 1 This is a flow chart of a method for determining a landing target point of a horizontal well provided by an embodiment of the present invention;

[0024] Figure 2 This is a flow chart of another method for determining a landing target point of a horizontal well provided by an embodiment of the present invention;

[0025] Figure 3 1 is a schematic diagram of a process for determining a reference well after screening provided by an embodiment of the present invention;

[0026] Figure 4 Schematic diagram of vertical thickness of marker layers and target formations associated with each completed vertical well provided by an embodiment of the present invention;

[0027] Figure 5 1 is a schematic diagram of a process for determining a target landing point of a target horizontal well in a target formation according to an embodiment of the present invention;

[0028] Figure 6 1 is a schematic structural diagram of a device for determining a landing target point of a horizontal well provided by an embodiment of the present invention;

[0029] Figure 7 It is a structural schematic diagram of an electronic device for implementing the method for determining the landing target point of a horizontal well according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Figure 1 This is a flow chart of a method for determining a landing target point of a horizontal well provided by an embodiment of the present invention. This embodiment is applicable to the case of determining a landing target point of a horizontal well. The method can be executed by a device for determining a landing target point of a horizontal well. The device for determining a landing target point of a horizontal well can be implemented in the form of hardware and / or software. The device for determining a landing target point of a horizontal well can be configured in an electronic device for determining a landing target point of a horizontal well. Figure 1 As shown, the method includes:

[0033] S110: Determine target data of completed vertical wells and while-drilling data of target horizontal wells in the target block.

[0034] The target data includes at least one of well logging data, well logging data and drilling data.

[0035] For example, the logging data may include a logging data curve, the well logging data may include a logging curve, and the drilling data may include a drilling parameter curve. The vertical wells drilled in the target block are the adjacent wells of the target horizontal well.

[0036] S120: Determine at least one marker layer of the target block and the stratigraphic dip of the marker layer according to the target data and the drilling data.

[0037] For example, this solution can use intelligent image recognition to perform real-time intelligent comparisons between logging curves in while-drilling data and those of completed vertical wells to identify at least one marker layer in the target area. For example, this solution can extract marker layer features from the logging curves of the completed vertical well and determine the characteristics of a particular formation encountered by the target horizontal well based on the logging curves of the target horizontal well. If the characteristics match those of the marker layer, the formation encountered by the target horizontal well is considered a marker layer.

[0038] Formation dip is the angle of inclination of a formation relative to the horizontal plane, and it indicates the formation development at the current drilling location. After identifying the marker layer in the target block, this solution can determine the marker layer's dip based on target data from the completed vertical well and while-drilling data from the target horizontal well.

[0039] S130: Determine a target reference well based on the target data, the drilling data, and the formation dip.

[0040] Specifically, since not all completed vertical wells in the target block are suitable as comparison wells to determine the landing target of the target horizontal well, this solution can screen the completed vertical wells layer by layer to obtain target reference wells. For example, in the first marker layer encountered by the target horizontal well, multiple reference wells are selected based on the target data of each completed vertical well, the target horizontal well's while-drilling data, and the formation dip of the marker layer. Then, in the second marker layer encountered by the target horizontal well, a second batch of reference wells are selected based on the target data of the multiple reference wells selected from the previous marker layer, the target horizontal well's while-drilling data, and the formation dip of the second marker layer. This continues until the target horizontal well encounters the marker layer closest to the target formation. The optimal reference well, i.e., the target reference well, is selected based on the target data of the reference wells selected from the previous marker layer, the target horizontal well's while-drilling data, and the formation dip of the closest marker layer. This can avoid the problem of off-target or inaccurate prediction results caused by incorrect comparison well selection, and provide a reliable data foundation for determining the accurate landing target of the horizontal well.

[0041] S140: Determine a target landing point of a target horizontal well in a target formation based on the target data of the target reference well, the while-drilling data, the nearest marker layer, and the dip angles of each formation.

[0042] The target formation is the formation to which the landing target point of the target horizontal well belongs; and the nearest marker layer is the marker layer closest to the target formation.

[0043] Specifically, this solution can determine the landing target point of the target horizontal well in the target formation, that is, the target landing target point, based on the target data of the target reference well, the drilling data, the marker layer closest to the target formation, and the formation inclination of each marker layer.

[0044] The technical solution of the embodiment of the present invention determines the target data of the completed vertical wells in the target block and the while-drilling data of the target horizontal wells; the target data includes at least one of the mud logging data, well logging data, and drilling data; at least one marker layer and the formation dip of the marker layer in the target block are determined based on the target data and the while-drilling data; a target reference well is determined based on the target data, the while-drilling data, and the formation dip; the target landing point of the target horizontal well in the target formation is determined based on the target data, the while-drilling data, the nearest marker layer, and the dips of each formation of the target reference well; the target formation is the formation to which the landing point of the target horizontal well belongs; the nearest marker layer is the marker layer closest to the target formation. By implementing the solution provided by the embodiment of the present invention, the efficiency and accuracy of horizontal well landing target prediction can be improved, which can facilitate early adjustment of the horizontal well trajectory and improve the success rate of smooth trajectory landing.

[0045] Figure 2 This is a flow chart of a method for determining a horizontal well landing target provided by an embodiment of the present invention. This embodiment is optimized based on the above embodiment. Figure 2 As shown, the method for determining the landing target point of a horizontal well in an embodiment of the present invention may include:

[0046] S210: Determine target data of completed vertical wells and while-drilling data of target horizontal wells in the target block.

[0047] The introduction of this step is detailed in the above embodiment.

[0048] S220: Determine at least one marker layer of the target block and the stratigraphic dip of the marker layer according to the target data and the drilling data.

[0049] The introduction of this step is detailed in the above embodiment.

[0050] In this embodiment, optionally, the formation inclination of the marker layer is determined based on the target data and the while-drilling data, including: determining the well inclination data of the target horizontal well based on the while-drilling data; determining the formation inclination of the marker layer based on the target data of the completed vertical well, the while-drilling data and the well inclination data.

[0051] Among them, for any marker layer, this solution can determine the formation attribute characteristics based on the target data of the completed vertical well, and then determine the formation inclination of the marker layer based on the drilling data of the target horizontal well and the formation attribute characteristics.

[0052] For example, this solution can fit the logging curves from the while-drilling data of a target horizontal well with the logging curves of a completed vertical well, fit the drilling parameter curves from the while-drilling data with the drilling parameter curves of a completed vertical well, and fit the mud logging data curves from the while-drilling data with the mud logging data curves of a completed vertical well. By adjusting the angle between formation dip and well deviation, angular differences are corrected and the fitting effect is improved. Based on the fitting results, the position of the target horizontal well trajectory in the formation space is determined. By continuously fitting well deviation and multiple sets of formation dip angles and correcting the spatial position relationship, the rationality of the marker formation dip prediction is improved. This provides a reliable data foundation for accurately determining the landing target of horizontal wells.

[0053] S230: Determine a target reference well based on the target data, the drilling data, and the formation dip.

[0054] In this embodiment, optionally, before determining the target reference well based on the target data, the while-drilling data and the formation inclination, the method also includes: determining the seismic data of the target block; determining the target reference well based on the target data, the while-drilling data and the formation inclination, including: determining the target reference well based on the seismic data, the target data, the while-drilling data and the formation inclination.

[0055] This solution determines the target reference well based on seismic data, target data, while-drilling data, and formation dip, thereby avoiding off-target or inaccurate prediction results caused by incorrect comparison well selection, and providing a reliable data basis for determining the accurate horizontal well landing target.

[0056] In one feasible embodiment, optionally, determining a target reference well based on the seismic data, the target data, the while-drilling data, and the formation dip includes: determining a three-dimensional structural distribution of the target formation based on the seismic data and the target data; using the first marker layer encountered by the target horizontal well as the target marker layer, and using the completed vertical well as a candidate reference well; determining the vertical thickness of the target marker layer associated with the candidate reference well and the target formation based on the target data of the candidate reference well; determining the intersection position of the target horizontal well and the target marker layer based on the while-drilling data; determining a screened reference well based on the three-dimensional structural distribution, the intersection position, each vertical thickness, and the formation dip of the target marker layer; using the next marker layer encountered by the target horizontal well as the target marker layer; if it is determined that the target marker layer is not the target formation, using the screened reference well as the candidate reference well, and returning to the operation of determining the vertical thickness of the target marker layer associated with the candidate reference well and the target formation based on the target data of the candidate reference well, until the target marker layer is the target formation, and using the screened reference well as the target reference well.

[0057] Among them, this scheme can determine the contour map of the target formation distribution based on seismic data, select the vertical wells drilled around the target horizontal well, first construct the target formation spatial distribution plan map based on the vertical depth of the target formation of the three vertical wells, and then change the vertical depth of the plan map at each additional vertical well to generate a three-dimensional vertical depth structural change map of the target formation. The contour map of seismic interpretation and the three-dimensional vertical depth structural change map of the target formation are calibrated with each other to establish a macroscopic three-dimensional structural distribution of the target formation, such as Figure 3 shown.

[0058] In this scheme, n marker layers, marker layer 1, marker layer 2, ... marker layer n, encountered sequentially by a target horizontal well are taken as an example. For marker layer 1, this scheme can determine the vertical thickness of marker layer 1 and the target formation associated with each completed vertical well based on the target data of each completed vertical well, and determine the intersection position of the target horizontal well and marker layer 1 based on the drilling data. The first batch of screened reference wells, i.e., candidate reference wells, are screened out based on the formation dip of marker layer 1, the intersection position of the target horizontal well and marker layer 1, the various vertical thicknesses, and the three-dimensional structural distribution.

[0059] For example, Figure 3-Figure 4 As shown, the target horizontal well sequentially encounters two marker layers, marker layer 1 and marker layer 2. For marker layer 1, this scheme can determine the vertical thicknesses h1, h2, and h3 of the marker layer 1 and the target formation associated with each completed vertical well based on the target data of wells A, B, and C, and determine the intersection position M of the target horizontal well and marker layer 1 based on the drilling data. Based on the formation dip of marker layer 1, the intersection position M of the target horizontal well and marker layer 1, the vertical thicknesses h1, h2, and h3, and the three-dimensional structural distribution, the first batch of screened reference wells, i.e., candidate reference wells, are screened out.

[0060] Then, this scheme can determine the vertical thickness of the marker layer 2 and the target formation associated with each screened reference well based on the target data of the screened reference wells screened out in the marker layer 1, and determine the intersection position of the target horizontal well and the marker layer 2 based on the drilling data. According to the formation inclination of the marker layer 2, the intersection position of the target horizontal well and the marker layer 2, the various vertical thicknesses determined between the marker layer 2 and the target formation associated with the first batch of screened reference wells, and the three-dimensional structural distribution, the second batch of screened reference wells, i.e., candidate reference wells, are further screened out.

[0061] Similarly, for marker layer n, this approach can determine the vertical thickness of marker layer n associated with each selected reference well based on the target data from the n-1th batch of reference wells selected from marker layer n-1. The intersection of the target horizontal well and marker layer n is determined based on the drilling data. Completed vertical wells are selected as target reference wells based on the formation dip of marker layer n, the intersection of the target horizontal well and marker layer n, the vertical thicknesses determined for marker layer n associated with the n-1th batch of reference wells, and the three-dimensional structural distribution. By iteratively screening the vertical wells surrounding the target horizontal well, the differential impact of multiple reference wells on target prediction can be eliminated, avoiding off-target or inaccurate prediction results caused by incorrect comparison well selection, and providing a reliable data foundation for accurately determining horizontal well landing targets.

[0062] In another feasible embodiment, optionally, the screened reference well is determined based on the three-dimensional structural distribution, the intersection position, the vertical thicknesses and the stratigraphic dip of the target marker layer, including: determining the predicted target position based on the intersection position, the stratigraphic dip of the target marker layer and the vertical thickness; determining the spatial relationship between each predicted target position and the three-dimensional structural distribution, and determining the candidate reference well associated with the predicted target position located in the three-dimensional structural distribution as the screened reference well.

[0063] For each vertical thickness determined based on the target marker layer and the target stratum, this solution can determine the predicted target position of the target horizontal well predicted in the target marker layer based on the intersection position of the target horizontal well and the target marker layer, the vertical thickness, and the stratigraphic dip of the target marker layer, and determine the spatial relationship between each predicted target position and the three-dimensional structural distribution, such as whether the predicted target position is within the three-dimensional structural distribution, on the three-dimensional structural distribution, or outside the three-dimensional structural distribution. If the predicted target position falls within the three-dimensional structural distribution, it means that the predicted target position belongs to the target stratum, and the candidate reference well associated with the predicted target position falling within the three-dimensional structural distribution position interval is used as the selected reference well.

[0064] For example, Figure 3-Figure 4 As shown, this scheme can determine the predicted target positions l1, l2, l3 of the target horizontal well predicted in the marker layer 1 according to the intersection position M between the target horizontal well and the marker layer 1, the vertical thicknesses h1, h2, h3 and the formation dip of the marker layer 1, and determine the spatial relationship between each predicted target position and the three-dimensional structural distribution of the target formation. If the predicted target position falls within the three-dimensional structural distribution, it means that the predicted target position belongs to the target formation, and the candidate reference wells A and C associated with the predicted target positions l1 and l3 falling within the three-dimensional structural distribution position interval are used as the screened reference wells.

[0065] Furthermore, if this approach determines that none of the predicted target locations fall within the 3D structural layout, the candidate reference well associated with the predicted target location with the smallest positional error within the 3D structural layout can be used as the reference well after screening. This can avoid off-target or inaccurate predictions caused by incorrect comparison well selection, and provide a reliable data foundation for accurately determining horizontal well landing targets.

[0066] S240: Determine a target inclination angle based on the inclination angles of each formation.

[0067] The target dip is the dip of the nearest marker layer, or the target dip is the average of the dips of other formations except the dip of the nearest marker layer.

[0068] For example, in this scheme, a target horizontal well sequentially encounters four marker layers, marker layers 1 through 4. The formation dip of marker layer 1 is 50 degrees, the dip of marker layer 2 is 60 degrees, the dip of marker layer 3 is 55 degrees, and the dip of marker layer 4 is 80 degrees. The average dip of the first three marker layers is 55 degrees, which differs significantly from the dip of the fourth marker layer. Therefore, the target dip is selected as the average of the first three dips, i.e., 55 degrees. If the dip of marker layer 4 is 60 degrees, which is not much different from the average of 55 degrees of the first three marker layers, the dip of marker layer 4, 60 degrees, can be directly selected as the target dip. A method for determining local formation dip based on macrostructural formation dip has been established to improve microstructural recognition capabilities and prevent local structural changes from affecting the vertical depth determination of the landing target.

[0069] S250: Determine the intersection position of the target horizontal well and the nearest marker layer.

[0070] Among them, this solution can determine the intersection position of the target horizontal well and the nearest marker layer closest to the target formation based on the drilling data of the target horizontal well that approaches the target formation layer by layer.

[0071] S260: Determine the vertical thickness of the nearest marker layer associated with the target reference well and the target formation.

[0072] Among them, this solution can determine the vertical thickness of the nearest marker layer associated with the target reference well and the target formation based on the target data of the target reference well.

[0073] S270: Determine the target landing point of the target horizontal well in the target formation based on the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer associated with the target reference well and the target formation.

[0074] In another feasible embodiment, optionally, before determining the target landing target point of the target horizontal well in the target formation based on the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer associated with the target reference well and the target formation, the method further includes: determining the geodetic coordinates of the landing position of the target horizontal well; determining the target landing target point of the target horizontal well in the target formation based on the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer associated with the target reference well and the target formation, including: determining the horizontal displacement of the target horizontal well based on the intersection position of the target horizontal well and the nearest marker layer and the geodetic coordinates of the landing position; determining the target landing target point of the target horizontal well in the target formation based on the target inclination, the vertical thickness of the nearest marker layer associated with the target reference well and the target formation, and the horizontal displacement.

[0075] For example, Figure 5 As shown, the geodetic coordinates Q(x1, y1) of the target horizontal well's landing location are pre-set. This solution determines the horizontal displacement of the target horizontal well based on the geodetic coordinates K(x2, y2) of the intersection of the target horizontal well and the nearest marker layer, as well as the geodetic coordinates Q(x1, y1) of the landing location. The target landing point h of the target horizontal well in the target formation is then determined based on the target inclination angle a, the vertical thickness H of the nearest marker layer associated with the target reference well and the target formation, and the horizontal displacement. This allows accurate determination of the horizontal well's landing target point.

[0076] Figure 6 FIG. 1 is a schematic diagram of the structure of a device for determining a landing target point of a horizontal well provided by an embodiment of the present invention. Figure 6 As shown, the device includes:

[0077] The target data and while-drilling data determination module 310 is used to determine the target data of the vertical wells drilled in the target block and the while-drilling data of the target horizontal wells; the target data includes at least one of the mud logging data, well logging data and drilling data;

[0078] A marker layer and formation dip determination module 320 is configured to determine at least one marker layer and the formation dip of the marker layer in the target block based on the target data and the while-drilling data;

[0079] A target reference well determination module 330 is configured to determine a target reference well based on the target data, the while-drilling data, and the formation dip;

[0080] The landing target point determination module 340 is used to determine the target landing target point of the target horizontal well in the target formation based on the target data of the target reference well, the drilling data, the nearest marker layer and the inclination of each formation; the target formation is the formation to which the landing target point of the target horizontal well belongs; the nearest marker layer is the marker layer closest to the target formation.

[0081] Optionally, the device also includes a seismic data determination module for determining the seismic data of the target block before determining the target reference well based on the target data, the downhole data and the formation inclination; a target reference well determination module 330 is specifically used to determine the target reference well based on the seismic data, the target data, the downhole data and the formation inclination.

[0082] Optionally, the target reference well determination module 330 includes a three-dimensional structural distribution determination unit, configured to determine the three-dimensional structural distribution of the target formation based on the seismic data and the target data; a candidate reference well determination unit, configured to use the first marker layer encountered by the target horizontal well as the target marker layer and the completed vertical well as the candidate reference well; a vertical thickness determination unit, configured to determine the vertical thickness of the target marker layer associated with the candidate reference well and the target formation based on the target data of the candidate reference well; and an intersection position determination unit, configured to determine the intersection position of the target horizontal well and the target marker layer based on the drilling data. The screened reference well determination unit is used to determine the screened reference well based on the three-dimensional structural distribution, the intersection position, the vertical thicknesses and the formation dip of the target marker layer; the iterative execution unit is used to take the next marker layer encountered by the target horizontal well as the target marker layer. If it is determined that the target marker layer is not the target formation, the screened reference well is used as a candidate reference well, and the operation of determining the target marker layer associated with the candidate reference well and the vertical thickness of the target formation based on the target data of the candidate reference well is returned to be executed until the target marker layer is the target formation and the screened reference well is used as the target reference well.

[0083] Optionally, a target reference well determination unit is specifically used to determine the predicted target point position based on the intersection position, the stratigraphic dip of the target marker layer, and the vertical thickness; determine the spatial relationship between each of the predicted target point positions and the three-dimensional structural distribution, and determine the candidate reference well associated with the predicted target point position located in the three-dimensional structural distribution as the screened reference well.

[0084] Optionally, the landing target point determination module 340 includes: a target inclination determination unit, used to determine the target inclination according to each of the formation inclinations; the target inclination is the formation inclination of the nearest marker layer, or the target inclination is the average value of the inclinations of other formations except the formation inclination of the nearest marker layer; a nearest marker layer intersection position determination unit, used to determine the intersection position of the target horizontal well and the nearest marker layer; a nearest marker layer and target formation vertical thickness determination unit, used to determine the vertical thickness of the nearest marker layer and the target formation associated with the target reference well; a target landing target point determination unit, used to determine the target landing target point of the target horizontal well in the target formation based on the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer and the target formation associated with the target reference well.

[0085] Optionally, the device also includes a horizontal displacement determination module, which is used to determine the geodetic coordinates of the landing position of the target horizontal well before determining the target landing target point of the target horizontal well in the target formation based on the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer associated with the target reference well and the target formation; a landing target point determination module 340, which is specifically used to determine the horizontal displacement of the target horizontal well based on the intersection position of the target horizontal well and the nearest marker layer and the geodetic coordinates of the landing position; and determine the target landing target point of the target horizontal well in the target formation based on the target inclination, the vertical thickness of the nearest marker layer associated with the target reference well and the target formation, and the horizontal displacement.

[0086] Optionally, the marker layer and formation dip determination module 320 is specifically used to determine the well inclination data of the target horizontal well based on the drilling data; and determine the formation dip of the marker layer based on the target data of the completed vertical well and the well inclination data.

[0087] The apparatus for determining a horizontal well landing target point provided in an embodiment of the present invention can execute the method for determining a horizontal well landing target point provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0088] Figure 7A schematic diagram of the structure of an electronic device 40 that can be used to implement an embodiment 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 processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0089] like Figure 7 As shown, the electronic device 40 includes at least one processor 41 and a memory, such as a read-only memory (ROM) 42, a random access memory (RAM) 43, etc., which is communicatively connected to the at least one processor 41. The memory stores a computer program that can be executed by the at least one processor, and the processor 41 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 42 or the computer program loaded from the storage unit 48 into the random access memory (RAM) 43. Various programs and data required for the operation of the electronic device 40 can also be stored in the RAM 43. The processor 41, ROM 42, and RAM 43 are connected to each other via a bus 44. An input / output (I / O) interface 45 is also connected to the bus 44.

[0090] Multiple components in the electronic device 40 are connected to the I / O interface 45, including an input unit 46, such as a keyboard, a mouse, etc.; an output unit 47, such as various types of displays, speakers, etc.; a storage unit 48, such as a magnetic disk, an optical disk, etc.; and a communication unit 49, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0091] Processor 41 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any other suitable processor, controller, microcontroller, etc. Processor 41 executes the various methods and processes described above, such as the method for determining a horizontal well landing target.

[0092] In some embodiments, the method for determining a horizontal well landing target can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 48. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 40 via ROM 42 and / or communication unit 49. When the computer program is loaded into RAM 43 and executed by processor 41, one or more steps of the method for determining a horizontal well landing target described above can be performed. Alternatively, in other embodiments, processor 41 can be configured to execute the method for determining a horizontal well landing target by any other appropriate means (e.g., via firmware).

[0093] Various embodiments of the systems and techniques described 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), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0094] Computer programs for implementing 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 the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0095] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0096] 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 can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the 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 acoustic input, voice input, or tactile input).

[0097] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0098] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0099] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0100] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A method for determining a landing target point of a horizontal well, characterized in that: include: Determine target data for completed vertical wells and while-drilling data for target horizontal wells in the target block; The target data includes at least one of mud logging data, well logging data, and drilling data; Determine at least one marker layer of the target block and the stratigraphic dip of the marker layer according to the target data and the drilling data; Determining seismic data of the target block; Determine the three-dimensional structural distribution of the target stratum according to the seismic data and the target data; The first marker layer encountered by the target horizontal well is used as the target marker layer, and the completed vertical well is used as the candidate reference well; Determining a predicted target point position based on the target data of the candidate reference well, the while-drilling data, and the formation dip angle of the target marker layer; determining a candidate reference well associated with a predicted target point position within the three-dimensional structural layout as a screened reference well; The next marker layer encountered by the target horizontal well is used as the target marker layer. If it is determined that the target marker layer is not the target formation, the screened reference well is used as the candidate reference well, and the operation of determining the predicted target point position based on the target data of the candidate reference well, the while-drilling data, and the formation dip of the target marker layer is returned to the target horizontal well until the target marker layer is the target formation, and the screened reference well is used as the target reference well. The target landing point of the target horizontal well in the target formation is determined based on the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer associated with the target reference well and the target formation; the target inclination is the formation inclination of the nearest marker layer or the average value of the inclinations of other formations except the formation inclination of the nearest marker layer; the target formation is the formation to which the landing point of the target horizontal well belongs; the nearest marker layer is the marker layer closest to the target formation.

2. The method according to claim 1, characterized in that Determining the predicted target point position according to the target data of the candidate reference well, the while-drilling data, and the formation dip of the target marker layer includes: Determining the vertical thickness of the target marker layer associated with the candidate reference well and the target formation according to the target data of the candidate reference well; Determine the intersection position of the target horizontal well and the target marker layer according to the drilling data; The predicted target point position is determined according to the intersection point position, the formation dip angle of the target marker layer and the vertical thickness.

3. The method according to claim 1, characterized in that Before determining a target landing point of the target horizontal well in the target formation based on the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer associated with the target reference well and the target formation, the method further includes: Determining the geodetic coordinates of the landing position of the target horizontal well; Determining a target landing point of the target horizontal well in the target formation according to the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer associated with the target reference well and the target formation includes: Determining the horizontal displacement of the target horizontal well according to the intersection position of the target horizontal well and the nearest marker layer and the geodetic coordinates of the landing position; A target landing point of the target horizontal well in the target formation is determined according to the target inclination, the vertical thickness of the nearest marker layer associated with the target reference well and the target formation, and the horizontal displacement.

4. The method according to claim 1, wherein Determining the formation dip of the marker layer according to the target data and the drilling data includes: Determining well deviation data of the target horizontal well based on the while-drilling data; The formation dip of the marker layer is determined according to the target data of the completed vertical well and the well deviation data.

5. A device for determining a landing target point of a horizontal well, characterized in that: include: The target data and while-drilling data determination module is used to determine the target data of the completed vertical wells and the while-drilling data of the target horizontal wells in the target block; The target data includes at least one of mud logging data, well logging data, and drilling data; a marker layer and formation dip angle determination module, configured to determine at least one marker layer of the target block and the formation dip angle of the marker layer according to the target data and the drilling-while-drilling data; A target reference well determination module, configured to determine seismic data of the target block; Determine the three-dimensional structural distribution of the target stratum according to the seismic data and the target data; The first marker layer encountered by the target horizontal well is used as the target marker layer, and the completed vertical well is used as the candidate reference well; Determining a predicted target point position based on the target data of the candidate reference well, the while-drilling data, and the formation dip of the target marker layer; determining the candidate reference well associated with the predicted target point position within the three-dimensional structural distribution as a screened reference well; The next marker layer encountered by the target horizontal well is used as the target marker layer. If it is determined that the target marker layer is not the target formation, the screened reference well is used as the candidate reference well, and the operation of determining the predicted target point position based on the target data of the candidate reference well, the while-drilling data, and the formation dip of the target marker layer is returned to the target horizontal well until the target marker layer is the target formation, and the screened reference well is used as the target reference well. A landing target point determination module is used to determine the target landing target point of the target horizontal well in the target formation based on the target inclination, the intersection position of the target horizontal well and the nearest marker layer, and the vertical thickness of the nearest marker layer associated with the target reference well and the target formation; the target inclination is the formation inclination of the nearest marker layer or the average value of the inclinations of other formations except the formation inclination of the nearest marker layer; the target formation is the formation to which the landing target point of the target horizontal well belongs; and the nearest marker layer is the marker layer closest to the target formation.

6. An electronic device, characterized in that: The electronic device comprises: 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 is executed by the at least one processor to enable the at least one processor to perform the method for determining a horizontal well landing target point according to any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for determining a horizontal well landing target point according to any one of claims 1 to 4 when executed.

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