Geothermal well gradient determination method and system

Abstract

The invention provides a geothermal well gradient determination method and system. The method comprises the steps that position data of geothermal wells in a region and the maximum gradient and the minimum gradient of the geothermal wells in the region are obtained; determining an initial gradient corresponding to the position data of each geothermal well according to the position data of each geothermal well; and determining the optimal gradient of the geothermal well in the area according to the maximum gradient and the minimum gradient of the geothermal well and the initial gradient corresponding to the position data of each geothermal well. According to the technical scheme, the precision of determining the gradient of the geothermal well is improved, and then well drilling is guided more accurately.

Description

Technical Field

[0001] This application relates to the field of geothermal well drilling technology, and in particular to a method and system for determining the inclination of a geothermal well. Background Technology

[0002] The development and utilization of new energy sources has become an important lever for promoting energy transformation and upgrading and high-quality development. my country has abundant geothermal energy reserves with profound development potential. As a clean and renewable energy source, geothermal resources are playing an increasingly important role in the global energy supply structure. Inclined wells are widely used in convective heat transfer in heavy oil and coal mining. However, due to the complexity of geological conditions at geothermal extraction sites, soft and hard rock layers may coexist, leading to well inclination. Existing research on geothermal extraction mainly focuses on vertical wells, with little attention paid to inclined wells, and the accuracy of determining the inclination angle is not high. Therefore, there is an urgent need to propose a scheme that can accurately determine the inclination angle of geothermal wells to guide the drilling of inclined geothermal wells. Summary of the Invention

[0003] This application provides a method and system for determining the inclination of a geothermal well, so as to at least solve the technical problem of low accuracy in determining the inclination of a geothermal well.

[0004] The first aspect of this application provides a method for determining the inclination of a geothermal well, the method comprising:

[0005] Obtain location data of geothermal wells in the region and the maximum and minimum inclination of geothermal wells in the region;

[0006] Determine the initial inclination corresponding to the location data of thermal wells in various regions;

[0007] The optimal inclination of geothermal wells in the region is determined based on the maximum inclination, minimum inclination, and initial inclination corresponding to the location data of each geothermal well.

[0008] Preferably, the location data includes: well inclination depth, well inclination azimuth, and well depth.

[0009] Furthermore, the initial inclination of the various geothermal wells is calculated using the following formula:

[0010] S=arctan[0.7*(A*cosθ+B*sinθ) / (|A|+|B|)]

[0011] In the formula, S is the initial inclination, A is the well inclination depth, θ is the well inclination azimuth, and B is the well depth.

[0012] Furthermore, determining the optimal inclination of geothermal wells within the region based on the maximum inclination, minimum inclination, and initial inclination corresponding to the location data of each geothermal well includes:

[0013] An inclination range is constructed based on the maximum and minimum inclination of the geothermal well;

[0014] Determine the number of initial inclinations corresponding to the location data of thermal wells in various locations within the inclination range;

[0015] The optimal inclination of the geothermal wells in the region is determined based on the number of wells within the specified inclination range and the initial inclination corresponding to the location data of the geothermal wells in each region.

[0016] Furthermore, determining the optimal inclination of geothermal wells within the region based on the number of wells within the inclination range and the initial inclination corresponding to the location data of each geothermal well includes:

[0017] If the number of inclinations within the specified inclination range is 1, then the initial inclination within the specified inclination range will be the optimal inclination of the geothermal well within the region.

[0018] If the number of inclination ranges is greater than or equal to 2, then each inclination interval is constructed, and then the optimal inclination of the geothermal well in the region is determined based on each inclination interval.

[0019] Furthermore, if the number of inclination ranges is greater than or equal to 2, then each inclination interval is constructed, including:

[0020] Obtain the minimum and maximum values ​​of each initial tilt within the tilt range;

[0021] A first inclination interval is constructed based on the minimum inclination of the geothermal well and the minimum value of each initial inclination, and a second inclination interval is constructed based on the maximum inclination of the geothermal well and the maximum value of each initial inclination.

[0022] Furthermore, determining the optimal inclination of the geothermal well within the region based on each inclination interval includes:

[0023] Determine whether any of the initial inclinations belongs to the first inclination interval. If so, select the minimum initial inclination within the first inclination interval and use the minimum value as the optimal inclination of the geothermal well in the region.

[0024] Otherwise, it is determined whether there is an initial inclination within the second inclination range among the initial inclinations. If there is, the minimum value of the initial inclination within the second inclination range is selected and the minimum value is taken as the optimal inclination of the geothermal well in the region. If not, the minimum value among the initial inclinations within the inclination range is taken as the optimal inclination of the geothermal well in the region.

[0025] A second aspect of this application provides a geothermal well inclination determination system, comprising:

[0026] The acquisition module is used to acquire location data of geothermal wells in various regions and the maximum and minimum inclination of geothermal wells in the region;

[0027] The first determining module is used to determine the initial inclination corresponding to the location data of thermal wells in various locations based on the location data of thermal wells in various locations.

[0028] The second determining module is used to determine the optimal inclination of geothermal wells in the region based on the maximum inclination, minimum inclination, and initial inclination corresponding to the location data of geothermal wells.

[0029] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the method described in the first aspect embodiment.

[0030] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the method described in the first aspect.

[0031] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0032] This application proposes a method and system for determining the inclination of geothermal wells. The method includes: acquiring location data of geothermal wells within a region and the maximum and minimum inclination of geothermal wells within the region; determining the initial inclination corresponding to the location data of each geothermal well; and determining the optimal inclination of geothermal wells within the region based on the maximum and minimum inclination and the initial inclination corresponding to the location data of each geothermal well. The technical solution proposed in this application improves the accuracy of geothermal well inclination determination, thereby providing more accurate guidance for drilling.

[0033] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0035] Figure 1 This is a flowchart of a method for determining the inclination of a geothermal well according to an embodiment of this application;

[0036] Figure 2This is a structural diagram of a geothermal well inclination determination system provided according to an embodiment of this application. Detailed Implementation

[0037] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0038] This application proposes a method and system for determining the inclination of geothermal wells. The method includes: acquiring location data of geothermal wells within a region and the maximum and minimum inclination of geothermal wells within the region; determining the initial inclination corresponding to the location data of geothermal wells in each region; and determining the optimal inclination of geothermal wells within the region based on the maximum and minimum inclination and the initial inclination corresponding to the location data of geothermal wells. The technical solution proposed in this application improves the accuracy of geothermal well inclination determination, thereby providing more accurate guidance for drilling.

[0039] The following describes a method and system for determining the inclination of a geothermal well, according to an embodiment of this application, with reference to the accompanying drawings.

[0040] Example 1

[0041] Figure 1 This is a flowchart of a method for determining the inclination of a geothermal well according to an embodiment of this application, as shown below. Figure 1 As shown, the method includes:

[0042] Step 1: Obtain the location data of geothermal wells in the region and the maximum and minimum inclination of geothermal wells in the region;

[0043] It should be noted that the location data includes: well inclination depth, well inclination azimuth, and well depth.

[0044] Step 2: Determine the initial inclination corresponding to the location data of thermal wells in various locations;

[0045] In this embodiment of the disclosure, the initial inclination of the various geothermal wells is calculated using the following formula:

[0046] S=arctan[0.7*(A*cosθ+B*sinθ) / (|A|+|B|)]

[0047] In the formula, S is the initial inclination, A is the well inclination depth, θ is the well inclination azimuth, and B is the well depth.

[0048] Step 3: Determine the optimal inclination of the geothermal wells in the region based on the maximum inclination, minimum inclination, and initial inclination corresponding to the location data of each geothermal well.

[0049] In this embodiment of the disclosure, step 3 specifically includes:

[0050] 3.1 Construct an inclination range based on the maximum and minimum inclination of the geothermal well;

[0051] 3.2 Determine the number of initial inclinations corresponding to the location data of thermal wells in each region within the specified inclination range;

[0052] 3.3 Determine the optimal inclination of the geothermal wells in the region based on the number of wells within the specified inclination range and the initial inclination corresponding to the location data of the geothermal wells in each region.

[0053] Furthermore, determining the optimal inclination of geothermal wells within the region based on the number of wells within the inclination range and the initial inclination corresponding to the location data of each geothermal well includes:

[0054] If the number of inclinations within the specified inclination range is 1, then the initial inclination within the specified inclination range will be the optimal inclination of the geothermal well within the region.

[0055] If the number of inclination ranges is greater than or equal to 2, then each inclination interval is constructed, and then the optimal inclination of the geothermal well in the region is determined based on each inclination interval.

[0056] Wherein, if the number of inclination ranges is greater than or equal to 2, then constructing each inclination interval includes:

[0057] Obtain the minimum and maximum values ​​of each initial tilt within the tilt range;

[0058] A first inclination interval is constructed based on the minimum inclination of the geothermal well and the minimum value of each initial inclination, and a second inclination interval is constructed based on the maximum inclination of the geothermal well and the maximum value of each initial inclination.

[0059] Furthermore, determining the optimal inclination of the geothermal well within the region based on each inclination interval includes:

[0060] Determine whether any of the initial inclinations belongs to the first inclination interval. If so, select the minimum initial inclination within the first inclination interval and use the minimum value as the optimal inclination of the geothermal well in the region.

[0061] Otherwise, it is determined whether there is an initial inclination within the second inclination range among the initial inclinations. If there is, the minimum value of the initial inclination within the second inclination range is selected and the minimum value is taken as the optimal inclination of the geothermal well in the region. If not, the minimum value among the initial inclinations within the inclination range is taken as the optimal inclination of the geothermal well in the region.

[0062] In summary, the geothermal well inclination determination method proposed in this embodiment improves the accuracy of geothermal well inclination determination, thereby providing more accurate guidance for drilling.

[0063] Example 2

[0064] Figure 2 This is a structural diagram of a geothermal well inclination determination system according to an embodiment of this application, as shown below. Figure 2 As shown, the system includes:

[0065] The acquisition module 100 is used to acquire the location data of geothermal wells in various regions and the maximum and minimum inclination of geothermal wells in the region;

[0066] The location data includes: well inclination depth, well inclination azimuth, and well depth.

[0067] The first determining module 200 is used to determine the initial inclination corresponding to the location data of the hot wells in various places based on the location data of the hot wells in various places.

[0068] The initial inclination of the various geothermal wells is calculated using the following formula:

[0069] S=arctan[0.7*(A*cosθ+B*sinθ) / (|A|+|B|)]

[0070] In the formula, S is the initial inclination, A is the well inclination depth, θ is the well inclination azimuth, and B is the well depth.

[0071] The second determining module 300 is used to determine the optimal inclination of geothermal wells in the region based on the maximum inclination, minimum inclination, and initial inclination corresponding to the location data of geothermal wells.

[0072] In this embodiment of the disclosure, the second determining module 300 is further configured to:

[0073] An inclination range is constructed based on the maximum and minimum inclination of the geothermal well;

[0074] Determine the number of initial inclinations corresponding to the location data of thermal wells in various locations within the inclination range;

[0075] The optimal inclination of the geothermal wells in the region is determined based on the number of wells within the specified inclination range and the initial inclination corresponding to the location data of the geothermal wells in each region.

[0076] Furthermore, the second determining module 300 is also used for:

[0077] If the number of inclinations within the specified inclination range is 1, then the initial inclination within the specified inclination range will be the optimal inclination of the geothermal well within the region.

[0078] If the number of inclination ranges is greater than or equal to 2, then each inclination interval is constructed, and then the optimal inclination of the geothermal well in the region is determined based on each inclination interval.

[0079] Furthermore, the second determining module 300 is also used for:

[0080] Obtain the minimum and maximum values ​​of each initial tilt within the tilt range;

[0081] A first inclination interval is constructed based on the minimum inclination of the geothermal well and the minimum value of each initial inclination, and a second inclination interval is constructed based on the maximum inclination of the geothermal well and the maximum value of each initial inclination.

[0082] Furthermore, the second determining module 300 is also used for:

[0083] Determine whether any of the initial inclinations belongs to the first inclination interval. If so, select the minimum initial inclination within the first inclination interval and use the minimum value as the optimal inclination of the geothermal well in the region.

[0084] Otherwise, it is determined whether there is an initial inclination within the second inclination range among the initial inclinations. If there is, the minimum value of the initial inclination within the second inclination range is selected and the minimum value is taken as the optimal inclination of the geothermal well in the region. If not, the minimum value among the initial inclinations within the inclination range is taken as the optimal inclination of the geothermal well in the region.

[0085] In summary, the geothermal well inclination determination system proposed in this embodiment improves the accuracy of geothermal well inclination determination, thereby providing more accurate guidance for drilling.

[0086] Example 3

[0087] To implement the above embodiments, this disclosure also proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the method described in Embodiment 1.

[0088] Example 4

[0089] To implement the above embodiments, this disclosure also proposes a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in Embodiment 1.

[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0091] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0092] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for determining the inclination of a geothermal well, characterized in that, The method includes: Obtain location data of geothermal wells in the region and the maximum and minimum inclination of geothermal wells in the region; Determine the initial inclination corresponding to the location data of thermal wells in various regions; The optimal inclination of geothermal wells in the region is determined based on the maximum inclination, minimum inclination, and initial inclination corresponding to the location data of each geothermal well.

2. The method as described in claim 1, characterized in that, The location data includes: well inclination depth, well inclination azimuth, and well depth.

3. The method as described in claim 2, characterized in that, The formulas for calculating the initial inclination of the thermal wells in various locations are as follows: S=arctan[0.7*(A*cosθ+B*sinθ) / (|A|+|B|)] In the formula, S is the initial inclination, A is the well inclination depth, θ is the well inclination azimuth, and B is the well depth.

4. The method as described in claim 3, characterized in that, The step of determining the optimal inclination of geothermal wells within a region based on the maximum inclination, minimum inclination, and initial inclination corresponding to the location data of each geothermal well includes: An inclination range is constructed based on the maximum and minimum inclination of the geothermal well; Determine the number of initial inclinations corresponding to the location data of thermal wells in various locations within the inclination range; The optimal inclination of the geothermal wells in the region is determined based on the number of wells within the specified inclination range and the initial inclination corresponding to the location data of the geothermal wells in each region.

5. The method as described in claim 4, characterized in that, The step of determining the optimal inclination of geothermal wells in the region based on the number of wells within the inclination range and the initial inclination corresponding to the location data of each geothermal well includes: If the number of inclinations within the specified inclination range is 1, then the initial inclination within the specified inclination range will be the optimal inclination of the geothermal well within the region. If the number of inclination ranges is greater than or equal to 2, then each inclination interval is constructed, and then the optimal inclination of the geothermal well in the region is determined based on each inclination interval.

6. The method as described in claim 5, characterized in that, If the number of slopes within the specified range is greater than or equal to 2, then each slope interval is constructed, including: Obtain the minimum and maximum values ​​of each initial tilt within the tilt range; A first inclination interval is constructed based on the minimum inclination of the geothermal well and the minimum value of each initial inclination, and a second inclination interval is constructed based on the maximum inclination of the geothermal well and the maximum value of each initial inclination.

7. The method as described in claim 6, characterized in that, Determining the optimal inclination of geothermal wells within the region based on the inclination intervals includes: Determine whether any of the initial inclinations belongs to the first inclination interval. If so, select the minimum initial inclination within the first inclination interval and use the minimum value as the optimal inclination of the geothermal well in the region. Otherwise, it is determined whether there is an initial inclination within the second inclination range among the initial inclinations. If there is, the minimum value of the initial inclination within the second inclination range is selected and the minimum value is taken as the optimal inclination of the geothermal well in the region. If not, the minimum value among the initial inclinations within the inclination range is taken as the optimal inclination of the geothermal well in the region.

8. A geothermal well inclination determination system, characterized in that, The system includes: The acquisition module is used to acquire location data of geothermal wells in various regions and the maximum and minimum inclination of geothermal wells in the region; The first determining module is used to determine the initial inclination corresponding to the location data of thermal wells in various locations based on the location data of thermal wells in various locations. The second determining module is used to determine the optimal inclination of geothermal wells in the region based on the maximum inclination, minimum inclination, and initial inclination corresponding to the location data of geothermal wells.

9. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the method as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1-7.

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