Method and device for quickly constructing horizontal well formation interpretation model

Abstract

The invention provides a method and device for quickly constructing a horizontal well formation interpretation model. The method comprises: determining a reference well according to horizontal well data; selecting a formation curve for square wave processing to determine a depth value and a square wave back curve value; performing environmental correction on the square wave back curve value using an environmental correction plate to determine the best approximate value of the formation as an initial attribute value, and establishing an initial formation model in combination with the depth value; obtaining formation interface data, and intersecting with the well trajectory profile of the initial formation model as a reference line drawn into the well trajectory profile; forming a layer interface using multi-well gridding differences, and intersecting with the well trajectory profile, and determining a constrained initial formation model in combination with adjacent well projections; forward modeling the constrained initial formation model according to the response of a logging instrument to determine a forward modeling curve and a forward modeling formation model; comparing the forward modeling curve with the measured curve, and repeating the forward modeling when there is inconsistency between the two curves until they are consistent, and outputting the horizontal well formation interpretation model.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum logging processing and interpretation, and in particular to a method and device for quickly constructing a horizontal well formation interpretation model. Background Art

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

[0003] In the process of petroleum logging processing and interpretation, a key step in the horizontal well interpretation process is to establish the geometric relationship between the well trajectory and the formation based on the logging response and other relevant information, and to construct a reasonable formation interpretation model.

[0004] The commonly used methods for building models include the following:

[0005] 1. Use 3D reservoir modeling to construct a geological reservoir model of the work area, thereby determining the position of the well trajectory in the formation and its geometric relationship with the formation, and ultimately establishing a formation model for horizontal well interpretation.

[0006] In the construction of this model, it is necessary to carry out reservoir modeling work on the work area in the early stage, which requires a lot of data and sometimes needs three-dimensional seismic data to support geological modeling work. However, for horizontal well interpretation in general, the work area often has not yet carried out reservoir modeling work, which is not suitable for horizontal well interpretation in the exploration stage. At the same time, this method has relatively high requirements on data and the interpretation personnel. At the same time, the modeling workload is large and it is not suitable for application to well logging interpretation personnel.

[0007] 2. Based on the pilot well or adjacent well, quickly establish the initial formation model, and adjust the formation model according to the forward modeling results or adjacent well data and the formation stretching results to match it with the measured curve, and finally establish the formation interpretation model.

[0008] This method has the characteristics of fast interpretation speed and relatively simple data requirements, and is used by some horizontal well interpretation software and drilling software. However, this method has multiple solutions when constructing models under complex formation conditions. At the same time, the initially constructed formation model only represents the response characteristics of the adjacent well. Although it can roughly represent the characteristics of the target layer, it is numerically expressed as a visual logging value, and it cannot reflect the change value of the lateral formation attributes. The formation model constructed by this method often has low interpretation accuracy.

[0009] Therefore, how to provide a new solution that can solve the above technical problems is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0010] The embodiment of the present invention provides a method for quickly constructing a horizontal well formation interpretation model, provides a method for quickly and accurately constructing a horizontal well formation interpretation model, reduces the workload of model construction, and improves modeling accuracy, and can better meet the needs of horizontal well processing interpretation. The method includes:

[0011] Determine the reference well based on the horizontal well data;

[0012] Select the formation curve of the reference well for square wave processing to determine the depth value and the corresponding square wave post-curve value;

[0013] Use the environmental correction chart to perform environmental correction on the square wave back curve value to determine the best approximate value of the formation;

[0014] The depth value is used as the depth value of the initial formation model, and the best formation approximation value is used as the initial attribute value of the initial formation model to establish the initial formation model;

[0015] Acquire the formation interface data in the horizontal well data, and draw the intersection of the well trajectory section of the initial formation model and the formation interface into the well trajectory section as a reference line;

[0016] The vertical depth of the layers of the multi-well data in the work area where the horizontal well is located is gridded and intersected to form a layer interface, which is then intersected with the well trajectory section to form the layer interface line of the initial formation model. Combined with the projection of the adjacent wells, the constrained initial formation model is determined.

[0017] According to the response of the logging instrument, the constrained initial formation model is forward modeled to determine the forward modeling curve and the forward modeling formation model;

[0018] The forward modeling curve is compared with the measured curve. When there is inconsistency between the forward modeling curve and the measured curve, the forward modeling formation model is adjusted according to the logging response characteristics and the forward modeling is repeated until the forward modeling curve is consistent with the measured curve, and the horizontal well formation interpretation model is output.

[0019] The embodiment of the present invention also provides a device for quickly constructing a horizontal well formation interpretation model, comprising:

[0020] A reference well determination module is used to determine a reference well based on horizontal well data;

[0021] The square wave processing module is used to select the formation curve of the reference well for square wave processing, and determine the depth value and the corresponding square wave post-curve value;

[0022] Curve environment correction module, used to perform environmental correction on the square wave post-curve value using the environmental correction chart to determine the best approximate value of the formation;

[0023] An initial formation model building module is used to use the depth value as the initial formation model depth value and the formation best approximate value as the initial attribute value of the initial formation model to build the initial formation model;

[0024] A reference line loading module is used to obtain the formation interface data in the horizontal well data, and draw the intersection of the well trajectory section of the initial formation model and the formation interface into the well trajectory section as a reference line;

[0025] The formation interface constraint module is used to grid the vertical depth of the multi-well data layer in the work area where the horizontal well is located to form a layer interface, which is intersected with the well trajectory profile to form the layer interface line of the initial formation model. Combined with the projection of the adjacent wells, the initial formation model after the constraint is determined;

[0026] A forward modeling module is used to perform forward modeling on the constrained initial formation model according to the response of the logging instrument, and determine the forward modeling curve and the forward modeling formation model;

[0027] The horizontal well formation interpretation model output module is used to compare the forward curve with the measured curve. When there is inconsistency between the forward curve and the measured curve, the forward formation model is adjusted according to the logging response characteristics and the forward modeling is repeated until the forward curve is consistent with the measured curve, and the horizontal well formation interpretation model is output.

[0028] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned method for rapidly constructing a horizontal well formation interpretation model when executing the computer program.

[0029] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above-mentioned method for rapidly constructing a horizontal well formation interpretation model.

[0030] The embodiment of the present invention provides a method and device for quickly constructing a horizontal well formation interpretation model, comprising: first, determining a reference well according to horizontal well data; then selecting a formation curve of the reference well for square wave processing to determine a depth value and a corresponding square wave back curve value; then using an environmental correction plate to perform environmental correction on the square wave back curve value to determine the best formation approximation value; continuing to use the depth value as the depth value of the initial formation model, and using the best formation approximation value as the initial attribute value of the initial formation model to establish an initial formation model; then obtaining formation interface data in the horizontal well data, and using the intersection of the well trajectory section of the initial formation model with the formation interface as a reference line to draw into the well trajectory profile; the next step is to grid the vertical depth of the multi-well data layer in the work area where the horizontal well is located to form a layer interface, and intersect with the well trajectory profile to form the layer interface line of the initial formation model, and combine the projection of the adjacent wells to determine the constrained initial formation model; the next step is to forward model the constrained initial formation model according to the response of the logging instrument to determine the forward curve and the forward formation model; finally, the forward curve is compared with the measured curve. When there is an inconsistency between the forward curve and the measured curve, the forward formation model is adjusted according to the logging response characteristics and repeated forward modeling is performed until the forward curve is consistent with the measured curve, and the horizontal well formation interpretation model is output. The horizontal well formation interpretation model constructed by the embodiment of the present invention takes into account the characteristics of multiple wells in the work area, and the formation fluctuation is more in line with the characteristics of the work area. At the same time, in the modeling process, environmental correction is first performed so that the formation value eliminates the influence of the borehole environment of the adjacent wells on the entire model construction, so that the constructed horizontal well formation interpretation model is more accurate. The embodiment of the present invention combines logging data environment correction and multi-well comparison to provide a method for quickly and accurately constructing a horizontal well formation interpretation model, which reduces the workload of model construction and improves modeling accuracy, and can better meet the needs of horizontal well processing and interpretation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0032] Figure 1 A schematic diagram of a method for rapidly constructing a horizontal well formation interpretation model according to an embodiment of the present invention.

[0033] Figure 2 The present invention is a flowchart of a method for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention.

[0034] Figure 3A well trajectory profile diagram of a method for rapidly constructing a horizontal well formation interpretation model according to an embodiment of the present invention.

[0035] Figure 4 A schematic diagram of selecting a formation model from a formation section in a method for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention.

[0036] Figure 5 This is a diagram showing an example of a calculation model for a method for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention.

[0037] Figure 6 This is a comparison diagram between the measured curve and the forward modeling curve of a method for quickly building a horizontal well formation interpretation model according to an embodiment of the present invention.

[0038] Figure 7 A schematic diagram of a computer device for running a method for rapidly constructing a horizontal well formation interpretation model implemented in the present invention.

[0039] Figure 8 The present invention is a schematic diagram of a device for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0041] Figure 1 FIG. 1 is a schematic diagram of a method for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention. Figure 1 As shown, an embodiment of the present invention provides a method for quickly constructing a horizontal well formation interpretation model, provides a method for quickly and accurately constructing a horizontal well formation interpretation model, reduces the workload of model construction, and improves modeling accuracy, and can better meet the needs of horizontal well processing interpretation. The method includes:

[0042] Step 101: Determine a reference well according to horizontal well data;

[0043] Step 102: Select the formation curve of the reference well for square wave processing to determine the depth value and the corresponding square wave curve value;

[0044] Step 103: Perform environmental correction on the square wave back curve value using the environmental correction chart to determine the best approximate value of the formation;

[0045] Step 104: Using the depth value as the depth value of the initial formation model and using the best formation approximation value as the initial attribute value of the initial formation model to establish the initial formation model;

[0046] Step 105: Acquire formation interface data in the horizontal well data, and draw the intersection of the well trajectory section of the initial formation model and the formation interface as a reference line into the well trajectory section;

[0047] Step 106: gridding and interpolating the vertical depths of the layers of the multi-well data in the work area where the horizontal well is located to form a layer interface, and intersecting it with the well trajectory profile to form a layer interface line of the initial formation model, and combining it with the projection of the adjacent wells to determine the constrained initial formation model;

[0048] Step 107: forward modeling the constrained initial formation model according to the logging instrument response to determine the forward modeling curve and the forward modeling formation model;

[0049] Step 108: Compare the forward modeling curve with the measured curve. When there is inconsistency between the forward modeling curve and the measured curve, adjust the forward modeling formation model according to the logging response characteristics and repeat the forward modeling until the forward modeling curve is consistent with the measured curve, and output the horizontal well formation interpretation model.

[0050] A method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention comprises: first, determining a reference well according to horizontal well data; then selecting a formation curve of the reference well for square wave processing to determine a depth value and a corresponding square wave back curve value; then using an environmental correction plate to perform environmental correction on the square wave back curve value to determine the best approximate formation value; continuing to use the depth value as the depth value of the initial formation model, and the best approximate formation value as the initial attribute value of the initial formation model to establish an initial formation model; next, obtaining formation interface data in the horizontal well data, and drawing the intersection of the well trajectory profile of the initial formation model with the formation interface as a reference line to the well trajectory profile; the next step is to grid the vertical depth of the multi-well data layer in the work area where the horizontal well is located to form a layer interface, and intersect with the well trajectory profile to form the layer interface line of the initial formation model, and combine the projection of the adjacent wells to determine the constrained initial formation model; the next step is to forward model the constrained initial formation model according to the response of the logging instrument to determine the forward curve and the forward formation model; finally, the forward curve is compared with the measured curve. When there is an inconsistency between the forward curve and the measured curve, the forward formation model is adjusted according to the logging response characteristics and repeated forward modeling is performed until the forward curve is consistent with the measured curve, and the horizontal well formation interpretation model is output. The horizontal well formation interpretation model constructed by the embodiment of the present invention takes into account the characteristics of multiple wells in the work area, and the formation fluctuation is more in line with the characteristics of the work area. At the same time, in the modeling process, environmental correction is first performed so that the formation value eliminates the influence of the borehole environment of the adjacent wells on the entire model construction, making the constructed horizontal well formation interpretation model more accurate. The embodiment of the present invention combines logging data environment correction and multi-well comparison to provide a method for quickly and accurately constructing a horizontal well formation interpretation model, which reduces the workload of model construction and improves modeling accuracy, and can better meet the needs of horizontal well processing and interpretation.

[0051] Figure 2 FIG. 1 is a flow chart of a method for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention. Figure 2 As shown, when a method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, it may include:

[0052] Determine the reference well based on the horizontal well data;

[0053] Select the formation curve of the reference well for square wave processing to determine the depth value and the corresponding square wave post-curve value;

[0054] Use the environmental correction chart to perform environmental correction on the square wave back curve value to determine the best approximate value of the formation;

[0055] The depth value is used as the depth value of the initial formation model, and the best formation approximation value is used as the initial attribute value of the initial formation model to establish the initial formation model;

[0056] Acquire the formation interface data in the horizontal well data, and draw the intersection of the well trajectory section of the initial formation model and the formation interface into the well trajectory section as a reference line;

[0057] The vertical depth of the layers of the multi-well data in the work area where the horizontal well is located is gridded and intersected to form a layer interface, which is then intersected with the well trajectory section to form the layer interface line of the initial formation model. Combined with the projection of the adjacent wells, the constrained initial formation model is determined.

[0058] According to the response of the logging instrument, the constrained initial formation model is forward modeled to determine the forward modeling curve and the forward modeling formation model;

[0059] The forward modeling curve is compared with the measured curve. When there is inconsistency between the forward modeling curve and the measured curve, the forward modeling formation model is adjusted according to the logging response characteristics and the forward modeling is repeated until the forward modeling curve is consistent with the measured curve, and the horizontal well formation interpretation model is output.

[0060] When a method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the aforementioned determination of a reference well based on horizontal well data includes:

[0061] Analyze horizontal well data to obtain the target layer of horizontal well drilling and its important adjacent layers above and below;

[0062] According to the target formation of the horizontal well and its important adjacent formations above and below it, a well with a more stable formation distribution than other wells in the work area is found as a reference well.

[0063] In the embodiment, it is first necessary to select a reference well based on the input horizontal well data, which mainly includes: analyzing the horizontal well data to obtain the target layer of the horizontal well drilling and its important adjacent layers above and below; based on the target layer of the horizontal well drilling and its important adjacent layers above and below, find a well in the work area whose stratigraphic distribution is more stable than other wells as a reference well.

[0064] In order to select reference wells, it is necessary to conduct a comprehensive analysis of the horizontal well data of the entire work area. According to the target formation of the horizontal well drilling and its important adjacent formations above and below, find wells with relatively stable formation distribution in the work area as reference wells, which are used as the curve data source for constructing the initial formation model. Generally, a pilot well will be drilled on the same well as the horizontal well as the basis for horizontal well drilling. When a pilot well exists in the collected data, the pilot well is generally selected as the reference well.

[0065] When a method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the aforementioned formation curve of the selected reference well is squared to determine the depth value and the corresponding square wave curve value, including:

[0066] Selecting a formation curve of a reference well for square wave processing, stratifying the reference well, and obtaining a depth value after stratification; wherein the formation curve of the reference well at least includes: a resistivity curve, a density curve, and a natural gamma curve;

[0067] According to the depth value after stratification, the curve value at the same depth in the reference well is obtained and determined as the square wave curve value corresponding to the depth value.

[0068] In the embodiment, the square wave processing is to obtain the depth value and its corresponding square wave curve value, which specifically includes: selecting the formation curve of the reference well for square wave processing, stratifying the reference well, and obtaining the depth value after stratification; wherein the formation curve of the reference well at least includes: resistivity curve, density curve and natural gamma curve; according to the depth value after stratification, the curve value at the same depth in the reference well is obtained to determine as the square wave curve value of the corresponding depth value. The curve in the reference well is squared, and the selection of the square wave curve is related to the stratification. In general, the natural gamma curve is selected as the square wave curve. At the same time, the resistivity curve is also referenced as the reference curve in the square wave process, and the role of the density curve in the square wave processing must also be considered. The square wave processing result is that the entire well is stratified, the depth value after stratification is obtained, and the curve value at the same depth in the well is obtained according to the depth value to determine as the square wave curve value of the corresponding depth value, as the initial value for establishing the formation model. The selected curve is related to the constructed formation model and the curve data in the horizontal well, and provides model values ​​for the later horizontal well forward modeling. Generally, resistivity curve, density curve and natural gamma curve are selected.

[0069] When implementing a method for rapidly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the aforementioned environmental correction is performed on the square wave back curve value using the environmental correction chart to determine the best approximate value of the formation, including:

[0070] Digitize environmental correction plates and establish a plate library;

[0071] According to the square wave back curve value, the chart library is called and the linear interpolation method is used to perform environmental correction to determine the best approximate value of the formation.

[0072] In the embodiment, in order to eliminate the influence of the borehole environment on the logging curve, an environmental correction plate is required to perform environmental correction on the square wave post-curve value, which mainly includes: digitizing the environmental correction plate and establishing a plate library; calling the plate library according to the square wave post-curve value, using a linear interpolation method to perform environmental correction, and determining the best approximate value of the formation.

[0073] The environmental correction of the curve is mainly to eliminate the influence of the borehole environment on the logging curve. In this embodiment, the environmental correction adopts the publicly published correction plate. Before the correction process, the environmental correction plate needs to be digitized and the digitized plate is formed into a plate library. When the parameters are provided for environmental correction, the plate library is called according to the curve value after the square wave. Generally, the linear difference method is adopted, and the corrected logging value can be obtained from the library as the best approximation of the formation.

[0074] When a method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the depth value is used as the depth value of the initial formation model, and the best approximate value of the formation is used as the initial attribute value of the initial formation model to establish the initial formation model, including:

[0075] The depth value is used as the depth value of the initial stratigraphic model, and a horizontal stratigraphic interface is established along the depth;

[0076] The best approximate value of the stratum is used as the initial attribute value of the initial stratum model, assigned to the horizontal stratum interface, and the initial stratum model is established.

[0077] In the embodiment, after obtaining the aforementioned depth value and the best approximate value of the formation, an initial formation model can be established, which mainly includes: using the depth value as the depth value of the initial formation model, establishing a horizontal formation interface along the depth; using the best approximate value of the formation as the initial attribute value of the initial formation model, assigning it to the horizontal formation interface, and establishing the initial formation model. In this embodiment, after obtaining the depth value of the initial formation model and the initial attribute value in the formation model, a horizontal formation interface is established along the depth, and the initial attribute value is assigned to the formation interface. After this step, a horizontal initial formation model can be obtained.

[0078] When implementing a method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, after establishing the aforementioned initial formation model, the method further includes:

[0079] According to the geological stratification of the reference well, the marker strata of the geological stratification of the adjacent well are marked in the horizontal stratum interface of the initial stratigraphic model.

[0080] When a method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the aforementioned acquisition of formation interface data in the horizontal well data, and drawing the intersection of the well trajectory section of the initial formation model and the formation interface as a reference line into the well trajectory section include:

[0081] Acquire the stratigraphic interface data in the horizontal well data and determine the stratigraphic interface of the horizontal well;

[0082] Intersecting the well trajectory section of the initial formation model with the formation interface to obtain a formation line;

[0083] Draw the formation line into the well trajectory section as a reference line for adjusting the formation model.

[0084] In the embodiment, a reference line for adjusting the formation model is drawn, and the main process includes: obtaining formation interface data in the horizontal well data to determine the formation interface of the horizontal well; intersecting the well trajectory profile of the initial formation model with the formation interface to obtain the formation line; and drawing the formation line into the well trajectory profile as a reference line for adjusting the formation model.

[0085] When there are formation interface data such as seismic picked-up formation interface or formation model data after reservoir modeling in the horizontal well data, the formation interface data in the horizontal well data is obtained, and the formation interface data is analyzed to obtain the formation interface of the horizontal well; then the well trajectory section of the initial formation model is intersected with the formation interface to obtain the formation line; the formation line is drawn into the well trajectory section of the initial formation model as a reference line for adjusting the formation model.

[0086] Figure 3 A well trajectory cross-sectional diagram of a method for rapidly constructing a horizontal well formation interpretation model according to an embodiment of the present invention is shown in FIG. Figure 3 As shown, when a method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the aforementioned intersecting the well trajectory section of the initial formation model with the formation interface to obtain the formation line includes:

[0087] Obtaining well trajectory points according to the well trajectory profile of the initial formation model;

[0088] Draw a straight line along the vertical direction for each well trajectory point, intersecting it with the formation interface, and determine the curve formed by the intersection point along the trajectory as it unfolds as the formation line.

[0089] In the embodiment, the main process of obtaining the formation line includes: first, obtaining the well trajectory points according to the well trajectory profile of the initial formation model; then, drawing a straight line along the vertical direction for each well trajectory point, intersecting with the formation interface, and determining the curve formed by the intersection point along the trajectory as the formation line. Specifically, Figure 3 As shown, draw a straight line along the vertical direction for each trajectory point, intersecting with the layer. These intersection points unfold along the trajectory, and the curve formed is the reference line mentioned above.

[0090] When a method for rapidly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the vertical depths of the layers of the multi-well data in the work area where the horizontal well is located are gridded and intersected to form a layer interface, which is intersected with the well trajectory profile to form a layer interface line of the initial formation model, and the constrained initial formation model is determined in combination with the projection of the adjacent wells, including:

[0091] The vertical depth of the layers of the multi-well data in the work area where the horizontal well is located is gridded and interpolated to form a layer interface;

[0092] Intersecting the layer interface with the well trajectory section to form a layer interface line of the initial formation model;

[0093] Project the adjacent wells in the manner of minimum distance to determine the projection stratigraphic interface of the adjacent wells;

[0094] The layer interface line of the initial formation model is compared and constrained with the projection formation interface of the adjacent wells to determine the constrained initial formation model.

[0095] In the embodiment, in order to realize the constraint of the formation interface, the vertical depths of the layers of the multi-well data in the work area where the horizontal well is located are gridded and interpolated to form a layer interface, and intersected with the well trajectory profile to form a layer interface line of the initial formation model, and combined with the projection of the adjacent wells, the constrained initial formation model is determined, which mainly includes: first, the vertical depths of the layers of the multi-well data in the work area where the horizontal well is located are gridded and intersected to form a layer interface; then the layer interface is intersected with the well trajectory profile to form the layer interface line of the initial formation model; then the adjacent wells are projected in a minimum distance manner to determine the projection formation interface of the adjacent wells; finally, the layer interface line of the initial formation model is compared and constrained with the projection formation interface of the adjacent wells to determine the constrained initial formation model.

[0096] Specifically, the vertical depths of the layers of the multi-well data in the work area where the horizontal well is located are gridded and intersected to form a layer interface, which is intersected with the trajectory development surface to form a layer interface line of the formation model. The implementation method is the same as the reference line of drawing and adjusting the formation model mentioned above;

[0097] Afterwards, the adjacent wells are projected in the manner of minimum distance to obtain the adjacent well projected formation interface, the formed formation model layer interface line is compared and constrained with the adjacent well projected formation interface, the formation interface is adjusted, and the constrained initial formation model is obtained.

[0098] When a method for rapidly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the constrained initial formation model is forward modeled according to the logging instrument response to determine the forward modeling curve and the forward modeling formation model, including:

[0099] According to the range of the logging instrument response, along the well trajectory, a computational model for forward modeling is obtained;

[0100] The computational model is used to forward model the constrained initial formation model to determine the forward modeling curve and the forward modeling formation model.

[0101] In the embodiment, the forward modeling process of the formation model mainly includes: first, according to the range of the logging instrument response, along the well trajectory, a calculation model for forward modeling is obtained; then, the constrained initial formation model is forward modeled using the calculation model to determine the forward modeling curve and the forward modeling formation model.

[0102] Figure 4 A schematic diagram of selecting a formation model from a formation section in a method for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention is shown in FIG. Figure 5 1 is a diagram showing an example of a calculation model of a method for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention; forward modeling is performed according to the constrained initial formation model, mainly including: first, according to the range of the logging instrument response, along the well trajectory, a calculation model for forward modeling is obtained; wherein the range of the logging instrument response is also referred to as the detection range of the logging instrument, such as Figure 4 As shown in the figure, the circle is the instrument detection range. Different instruments have different detection ranges and detection shapes, including parameters such as the intersection position of the formation interface and the well trajectory, the angle between each formation interface and the trajectory, and the attribute value of the formation. Figure 5 The figure shows an example of a computational model using natural gamma logging as an example; then, the computational model is used to forward model the constrained initial formation model to determine the forward modeling curve and the forward modeling formation model.

[0103] Figure 6 : This is a comparison diagram of the measured curve and the forward modeling curve of a method for quickly building a horizontal well formation interpretation model according to an embodiment of the present invention. Figure 6As shown, when a method for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the forward modeling curve is compared with the measured curve. When there is inconsistency between the forward modeling curve and the measured curve, the forward modeling formation model is adjusted according to the logging response characteristics and then repeated forward modeling is performed until the forward curve is consistent with the measured curve, and the horizontal well formation interpretation model is output, which mainly includes:

[0104] Compare the forward modeling curve obtained above with the measured curve using the same scale and the same well logging display, as shown in Figure 2. Figure 6 As shown in the figure, it is a comparison chart of GR curve. It can be seen from the figure that there are inconsistencies between the forward curve and the measured curve at different positions. At this time, the formation model needs to be adjusted; the adjustment process mainly includes:

[0105] The adjustment model is adjusted according to various logging response characteristics, and is adjusted according to the reference line during the adjustment process; the forward model obtained after adjustment and then the forward curve are compared with the measured curve again. When there is still inconsistency between the forward curve and the measured curve, the forward modeling is repeated after adjustment; in the repeated adjustment process, in order to make the forward modeling speed meet the application requirements, in this embodiment, a forward modeling response library is established, and the library is stored according to different formation attributes, different angles, different layer thicknesses, and different logging methods. The forward modeling values ​​are calculated using simulation tools such as finite element and MCNP. When performing forward modeling, the model is retrieved and the forward modeling values ​​are returned; through iterative interactive adjustment, until the forward modeling curve is consistent with the measured curve, the horizontal well formation interpretation model is output to achieve the implementation effect of the embodiment of the present invention.

[0106] The horizontal well formation interpretation model constructed by the embodiment of the present invention takes into account the characteristics of multiple wells in the work area, and the formation fluctuation is more in line with the characteristics of the work area. At the same time, in the modeling process, environmental correction is first performed so that the formation value eliminates the influence of the borehole environment of the adjacent wells on the entire model construction, making the constructed horizontal well formation interpretation model more accurate. The embodiment of the present invention combines the means of logging data environmental correction and multi-well comparison to provide a fast and accurate method for constructing a horizontal well formation interpretation model, which reduces the workload of model construction and improves the modeling accuracy, and can better meet the needs of horizontal well processing interpretation.

[0107] In order to realize the construction of the horizontal well formation interpretation model, the following steps are adopted:

[0108] Step 1: Select a reference well to construct the initial model.

[0109] Step 2: Select a specific formation curve of the reference well and perform square wave processing on the curve according to the formation division accuracy.

[0110] Step 3: According to the curve type, the square wave curve is corrected using the environmental correction chart to obtain the best approximate value of the formation.

[0111] Step 4: assign the depth and the corresponding corrected best approximate value of the formation to the initial value of the formation to form an initial formation model at the formation level.

[0112] Step 5: According to the geological stratification of the selected reference well, mark the marker strata into the initial stratigraphic model.

[0113] Step 6: When seismic layer data exists, the intersection line of the seismic stratum and the trajectory is drawn into the section as a reference line.

[0114] Step 7: Multi-well spatial gridding difference is used to form a formation trend surface, which is intersected with the trajectory profile to form a constrained formation line.

[0115] Step 8: Perform forward logging according to the model and compare the forward-modeled logging curve with the measured curve.

[0116] Step 9: According to the curve comparison results, adjust the inconsistent positions and repeat step 8 until the measured curve is consistent with the forward curve.

[0117] Step 10: Output the horizontal well formation interpretation model.

[0118] The embodiment of the present invention also provides a process for realizing a method for rapidly constructing a horizontal well formation interpretation model. Figure 2 , the process mainly includes S1-S10, specifically:

[0119] In step S1, in order to select a reference well, a comprehensive analysis of the entire work area is required. According to the target layer of the horizontal well drilling and its upper and lower related important adjacent layers, wells with relatively stable formation distribution in the work area are found as the curve data source for constructing the initial formation model. Generally, a pilot well will be drilled on the same well as the horizontal well as the basis for horizontal well drilling. When a pilot well exists in the collected data, the present invention generally selects the pilot well as the reference well.

[0120] In step S2, the curve in the reference well is squared. The selection of the squared curve is related to the stratification. In general, the natural gamma curve is selected as the squared curve. At the same time, the resistivity curve is also used as the reference curve in the squared process. The squared result is that the entire well is stratified, and the depth value after stratification is obtained. According to the depth value, the curve value at the same depth in the well is obtained as the initial value of the model. The selected curve is related to the constructed formation model and the curve data in the horizontal well, providing model values ​​for the subsequent horizontal well forward modeling. In general, resistivity curves, density curves, and natural gamma curves are selected.

[0121] In step S3, the environment of the curve is mainly to eliminate the impact of the borehole environment on the logging curve. In this process, the environmental correction uses publicly published correction plates. Before the correction process, the plates need to be digitized and the digitized plates are formed into a plate library. When the parameters are provided, the plate library is called, and generally the linear difference method is used to obtain the corrected logging values ​​from the library.

[0122] In step S4, step S2 obtains the depth value of the initial stratigraphic model, and step S3 obtains the initial attribute value in the stratigraphic model. In this step, a horizontal stratigraphic interface is established along the depth, and the attribute value is assigned to the stratigraphic interface. After this step, a horizontal stratigraphic initial model can be obtained. At the same time, the marker layer of the geological stratification of the adjacent well needs to be marked on the stratigraphic interface.

[0123] In step S5, when there is a formation interface picked up by seismic or a formation model data after reservoir modeling in the acquired data, the formation line is obtained by intersecting the well trajectory profile with the interface, and the formation line is placed in the initial model as a reference line for adjusting the initial model. Figure 2 As shown, draw a straight line along the vertical direction for each trajectory point, intersecting with the layer. These intersection points unfold along the trajectory, and the curve formed is the reference line mentioned above.

[0124] In step S6, the vertical depth of the multi-well data layer in the work area where the horizontal well is located is gridded and intersected to form a layer interface, which intersects with the trajectory expansion surface to form the layer interface line of the formation model. The method of forming the formation line is the same as that in step S5. After that, the adjacent wells are projected in the manner of minimum distance, and the formation line of the formation model is compared with the projection formation interface of the adjacent wells to adjust the formation interface. After S6, the constrained initial formation model of this process has been formed.

[0125] In step S7, forward modeling is performed according to the formation model, and a calculation model for forward modeling is obtained along the well trajectory according to the detection range of the logging instrument, such as Figure 3 As shown in the figure, the circle is the instrument detection range. Different instruments have different detection ranges and detection shapes, including parameters such as the intersection position of the formation interface and the well trajectory, the angle between each formation interface and the trajectory, and the attribute value of the formation. Figure 4 Shown is an example of a computational model using natural gamma ray logging as an example.

[0126] In step S8, the actual measurement curve and the curve after model forward modeling are displayed at the same scale and the same well logging path, such as Figure 5 As shown in FIG. 1 , a comparison diagram of the GR curve is shown. As can be seen from the figure, the two curves are inconsistent at different positions. At this time, the formation model is adjusted, namely, steps S9 and S10.

[0127] In step S10, the adjustment model should be adjusted according to various logging response characteristics. In the process of repeated adjustment, in order to make the forward modeling speed meet the application requirements, a forward modeling response library is established in the present invention. The library stores data according to different formation attributes, different angles, different layer thicknesses, and different logging methods. The forward modeling values ​​are calculated using simulation tools such as finite element and MCNP. When forward modeling is performed in S7, the model is retrieved and the forward modeling values ​​are returned.

[0128] Finally, the implementation effect of this process is achieved through iterative interactive adjustment.

[0129] Figure 7 A schematic diagram of a computer device for running a method for rapidly constructing a horizontal well formation interpretation model implemented by the present invention is shown in FIG. Figure 7 As shown, an embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned method for rapidly constructing a horizontal well formation interpretation model when executing the computer program.

[0130] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above-mentioned method for rapidly constructing a horizontal well formation interpretation model.

[0131] The present invention also provides a device for quickly building a horizontal well formation interpretation model, as described in the following embodiments. Since the principle of the device to solve the problem is similar to that of a method for quickly building a horizontal well formation interpretation model, the implementation of the device can refer to the implementation of a method for quickly building a horizontal well formation interpretation model, and the repeated parts will not be repeated.

[0132] Figure 8 FIG. 1 is a schematic diagram of a device for quickly constructing a horizontal well formation interpretation model according to an embodiment of the present invention. Figure 8 As shown, the embodiment of the present invention also provides a device for quickly constructing a horizontal well formation interpretation model, which may include:

[0133] The reference well determination module 801 is used to determine the reference well according to the horizontal well data;

[0134] The square wave processing module 802 is used to select the formation curve of the reference well for square wave processing, and determine the depth value and the corresponding square wave post curve value;

[0135] Curve environment correction module 803, used to perform environmental correction on the square wave post-curve value using the environmental correction chart to determine the best approximate value of the formation;

[0136] An initial formation model building module 804 is used to use the depth value as the initial formation model depth value and the formation best approximate value as the initial attribute value of the initial formation model to build the initial formation model;

[0137] The reference line loading module 805 is used to obtain the formation interface data in the horizontal well data, and draw the intersection of the well trajectory section of the initial formation model and the formation interface into the well trajectory section as a reference line;

[0138] The formation interface constraint module 806 is used to perform gridding difference on the vertical depth of the layers of the multi-well data in the work area where the horizontal well is located to form a layer interface, and intersect it with the well trajectory profile to form a layer interface line of the initial formation model, and determine the constrained initial formation model in combination with the projection of the adjacent wells;

[0139] The forward modeling module 807 is used to perform forward modeling on the constrained initial formation model according to the logging instrument response, and determine the forward modeling curve and the forward modeling formation model;

[0140] The horizontal well formation interpretation model output module 808 is used to compare the forward modeling curve with the measured curve. When there is inconsistency between the forward modeling curve and the measured curve, the forward modeling formation model is adjusted according to the logging response characteristics and then repeated forward modeling is performed until the forward modeling curve is consistent with the measured curve, and the horizontal well formation interpretation model is output.

[0141] When implementing a device for rapidly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the aforementioned reference well determination module is specifically used to:

[0142] Analyze horizontal well data to obtain the target layer of horizontal well drilling and its important adjacent layers above and below;

[0143] According to the target formation of the horizontal well and its important adjacent formations above and below it, a well with a more stable formation distribution than other wells in the work area is found as a reference well.

[0144] When implementing a device for rapidly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the aforementioned square wave processing module is specifically used to:

[0145] Selecting a formation curve of a reference well for square wave processing, stratifying the reference well, and obtaining a depth value after stratification; wherein the formation curve of the reference well at least includes: a resistivity curve, a density curve, and a natural gamma curve;

[0146] According to the depth value after stratification, the curve value at the same depth in the reference well is obtained and determined as the square wave curve value corresponding to the depth value.

[0147] When implementing a device for rapidly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the aforementioned curve environment correction module is specifically used to:

[0148] Digitize environmental correction plates and establish a plate library;

[0149] According to the square wave back curve value, the chart library is called and the linear interpolation method is used to perform environmental correction to determine the best approximate value of the formation.

[0150] When implementing a device for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the aforementioned initial formation model building module is specifically used to:

[0151] The depth value is used as the depth value of the initial stratigraphic model, and a horizontal stratigraphic interface is established along the depth;

[0152] The best approximate value of the stratum is used as the initial attribute value of the initial stratum model, assigned to the horizontal stratum interface, and the initial stratum model is established.

[0153] When implementing a device for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the aforementioned initial formation model building module is also used to:

[0154] According to the geological stratification of the reference well, the marker strata of the geological stratification of the adjacent well are marked in the horizontal stratum interface of the initial stratigraphic model.

[0155] When implementing a device for rapidly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the reference line loading module is specifically used to:

[0156] Acquire the stratigraphic interface data in the horizontal well data and determine the stratigraphic interface of the horizontal well;

[0157] Intersecting the well trajectory section of the initial formation model with the formation interface to obtain a formation line;

[0158] Draw the formation line into the well trajectory section as a reference line for adjusting the formation model.

[0159] When implementing a device for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the reference line loading module is further used to:

[0160] Obtaining well trajectory points according to the well trajectory profile of the initial formation model;

[0161] Draw a straight line along the vertical direction for each well trajectory point, intersecting it with the formation interface, and determine the curve formed by the intersection point along the trajectory as it unfolds as the formation line.

[0162] When implementing a device for rapidly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention, in one embodiment, the aforementioned formation interface constraint module is specifically used to:

[0163] The vertical depth of the layers of the multi-well data in the work area where the horizontal well is located is gridded and interpolated to form a layer interface;

[0164] Intersecting the layer interface with the well trajectory section to form a layer interface line of the initial formation model;

[0165] Project the adjacent wells in the manner of minimum distance to determine the projection stratigraphic interface of the adjacent wells;

[0166] The layer interface line of the initial formation model is compared and constrained with the projection formation interface of the adjacent wells to determine the constrained initial formation model.

[0167] When a device for quickly constructing a horizontal well formation interpretation model provided by an embodiment of the present invention is specifically implemented, in one embodiment, the aforementioned forward modeling module is specifically used to:

[0168] According to the range of the logging instrument response, along the well trajectory, a computational model for forward modeling is obtained;

[0169] The computational model is used to forward model the constrained initial formation model to determine the forward modeling curve and the forward modeling formation model.

[0170] In summary, the embodiment of the present invention provides a method and device for quickly constructing a horizontal well formation interpretation model, including: first, determining a reference well according to horizontal well data; then selecting the formation curve of the reference well for square wave processing to determine the depth value and the corresponding square wave back curve value; then using the environmental correction plate to perform environmental correction on the square wave back curve value to determine the best approximate value of the formation; continuing to use the depth value as the depth value of the initial formation model, and the best approximate value of the formation as the initial attribute value of the initial formation model to establish the initial formation model; next, obtaining the formation interface data in the horizontal well data, and taking the intersection of the well trajectory profile of the initial formation model with the formation interface as a reference The line is drawn into the well trajectory profile; the next step is to grid the vertical depth of the multi-well data layer in the work area where the horizontal well is located to form a layer interface, and intersect with the well trajectory profile to form the layer interface line of the initial formation model, and combine the projection of the adjacent well to determine the constrained initial formation model; the next step is to forward model the constrained initial formation model according to the response of the logging instrument to determine the forward curve and the forward formation model; finally, the forward curve is compared with the measured curve. When there is inconsistency between the forward curve and the measured curve, the forward formation model is adjusted according to the logging response characteristics and repeated forward modeling is performed until the forward curve is consistent with the measured curve, and the horizontal well formation interpretation model is output. The horizontal well formation interpretation model constructed by the embodiment of the present invention takes into account the characteristics of multiple wells in the work area, and the formation fluctuation is more in line with the characteristics of the work area. At the same time, in the modeling process, environmental correction is first performed so that the formation value eliminates the influence of the borehole environment of the adjacent wells on the entire model construction, so that the constructed horizontal well formation interpretation model is more accurate. The embodiment of the present invention combines logging data environment correction and multi-well comparison to provide a method for quickly and accurately constructing a horizontal well formation interpretation model, which reduces the workload of model construction and improves modeling accuracy, and can better meet the needs of horizontal well processing and interpretation.

[0171] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0172] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0173] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0174] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0175] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for rapidly constructing a horizontal well formation interpretation model, characterized in that: include: Determine the reference well based on the horizontal well data; Select the formation curve of the reference well for square wave processing to determine the depth value and the corresponding square wave post-curve value; Use the environmental correction chart to perform environmental correction on the square wave back curve value to determine the best approximate value of the formation; The depth value is used as the depth value of the initial stratigraphic model, and a horizontal stratigraphic interface is established along the depth; The best approximate value of the formation is used as the initial attribute value of the initial formation model, and is assigned to the horizontal formation interface to establish the initial formation model; According to the geological stratification of the reference well, the marker strata of the geological stratification of the adjacent well are marked in the horizontal stratum interface of the initial stratum model; Acquire the formation interface data in the horizontal well data, and draw the intersection of the well trajectory section of the initial formation model and the formation interface into the well trajectory section as a reference line; The vertical depth of the layers of the multi-well data in the work area where the horizontal well is located is gridded and interpolated to form a layer interface; Intersecting the layer interface with the well trajectory section to form a layer interface line of the initial formation model; Project the adjacent wells in the manner of minimum distance to determine the projection stratigraphic interface of the adjacent wells; Combined with the projection of adjacent wells, the layer interface line of the initial formation model is compared and constrained with the projection of the formation interface of the adjacent wells to determine the constrained initial formation model; according to the response of the logging instrument, the constrained initial formation model is forward modeled to determine the forward modeling curve and the forward modeling formation model; The forward modeling curve is compared with the measured curve. When there is inconsistency between the forward modeling curve and the measured curve, the forward modeling formation model is adjusted according to the logging response characteristics and the forward modeling is repeated until the forward modeling curve is consistent with the measured curve, and the horizontal well formation interpretation model is output.

2. The method according to claim 1, characterized in that Based on the horizontal well data, the reference well is determined, including: Analyze horizontal well data to obtain the target layer of horizontal well drilling and its important adjacent layers above and below; According to the target formation of the horizontal well and its important adjacent formations above and below it, a well with a more stable formation distribution than other wells in the work area is found as a reference well.

3. The method according to claim 1, characterized in that Select the formation curve of the reference well for square wave processing to determine the depth value and the corresponding square wave curve value, including: Selecting a formation curve of a reference well for square wave processing, stratifying the reference well, and obtaining a depth value after stratification; wherein the formation curve of the reference well at least includes: a resistivity curve, a density curve, and a natural gamma curve; According to the depth value after stratification, the curve value at the same depth in the reference well is obtained and determined as the square wave curve value corresponding to the depth value.

4. The method according to claim 1, characterized in that Use the environmental correction chart to perform environmental correction on the square wave back curve value to determine the best approximate value of the formation, including: Digitize environmental correction plates and establish a plate library; According to the square wave back curve value, the chart library is called and the linear interpolation method is used to perform environmental correction to determine the best approximate value of the formation.

5. The method according to claim 1, characterized in that Obtain the formation interface data in the horizontal well data, and draw the intersection of the well trajectory section of the initial formation model and the formation interface as a reference line into the well trajectory section, including: Acquire the stratigraphic interface data in the horizontal well data and determine the stratigraphic interface of the horizontal well; Intersecting the well trajectory section of the initial formation model with the formation interface to obtain a formation line; Draw the formation line into the well trajectory section as a reference line for adjusting the formation model.

6. The method according to claim 5, characterized in that Intersect the well trajectory section of the initial formation model with the formation interface to obtain the formation line, including: Obtaining well trajectory points according to the well trajectory profile of the initial formation model; Draw a straight line along the vertical direction for each well trajectory point, intersecting it with the formation interface, and determine the curve formed by the intersection point along the trajectory as it unfolds as the formation line.

7. The method according to claim 1, characterized in that According to the logging instrument response, the constrained initial formation model is forward modeled to determine the forward curve and forward formation model, including: According to the range of the logging instrument response, along the well trajectory, a computational model for forward modeling is obtained; The computational model is used to forward model the constrained initial formation model to determine the forward modeling curve and the forward modeling formation model.

8. A device for rapidly constructing a horizontal well formation interpretation model, characterized in that: include: A reference well determination module is used to determine a reference well based on horizontal well data; The square wave processing module is used to select the formation curve of the reference well for square wave processing, and determine the depth value and the corresponding square wave post-curve value; Curve environment correction module, used to perform environmental correction on the square wave post-curve value using the environmental correction chart to determine the best approximate value of the formation; An initial formation model building module is used to establish a horizontal formation interface along the depth by taking the depth value as the initial formation model depth value; The best approximate value of the formation is used as the initial attribute value of the initial formation model, and is assigned to the horizontal formation interface to establish the initial formation model; According to the geological stratification of the reference well, the marker strata of the geological stratification of the adjacent well are marked in the horizontal stratum interface of the initial stratum model; A reference line loading module is used to obtain the formation interface data in the horizontal well data, and draw the intersection of the well trajectory section of the initial formation model and the formation interface into the well trajectory section as a reference line; The formation interface constraint module is used to grid the vertical depth of the multi-well data layer in the work area where the horizontal well is located to form a layer interface, and intersect the layer interface with the well trajectory section to form the layer interface line of the initial formation model; Project the adjacent wells in the manner of minimum distance to determine the projection stratigraphic interface of the adjacent wells; Combined with the projection of adjacent wells, the layer interface line of the initial formation model is compared and constrained with the projection of the formation interface of the adjacent wells to determine the constrained initial formation model; A forward modeling module is used to perform forward modeling on the constrained initial formation model according to the response of the logging instrument, and determine the forward modeling curve and the forward modeling formation model; The horizontal well formation interpretation model output module is used to compare the forward curve with the measured curve. When there is inconsistency between the forward curve and the measured curve, the forward formation model is adjusted according to the logging response characteristics and the forward modeling is repeated until the forward curve is consistent with the measured curve, and the horizontal well formation interpretation model is output.

9. The device according to claim 8, characterized in that The reference well determination module is specifically used for: Analyze horizontal well data to obtain the target layer of horizontal well drilling and its important adjacent layers above and below; According to the target formation of the horizontal well and its important adjacent formations above and below it, a well with a more stable formation distribution than other wells in the work area is found as a reference well.

10. The device according to claim 8, characterized in that The square wave processing module is specifically used for: Selecting a formation curve of a reference well for square wave processing, stratifying the reference well, and obtaining a depth value after stratification; wherein the formation curve of the reference well at least includes: a resistivity curve, a density curve, and a natural gamma curve; According to the depth value after stratification, the curve value at the same depth in the reference well is obtained and determined as the square wave curve value corresponding to the depth value.

11. The device according to claim 8, characterized in that Curve environment correction module, specifically used for: Digitize environmental correction plates and establish a plate library; According to the square wave back curve value, the chart library is called and the linear interpolation method is used to perform environmental correction to determine the best approximate value of the formation.

12. The device according to claim 8, characterized in that Reference line loading module, specifically used for: Acquire the stratigraphic interface data in the horizontal well data and determine the stratigraphic interface of the horizontal well; Intersecting the well trajectory section of the initial formation model with the formation interface to obtain a formation line; Draw the formation line into the well trajectory section as a reference line for adjusting the formation model.

13. The device according to claim 12, characterized in that The reference line loading module is also used to: Obtaining well trajectory points according to the well trajectory profile of the initial formation model; Draw a straight line along the vertical direction for each well trajectory point, intersecting it with the formation interface, and determine the curve formed by the intersection point along the trajectory as it unfolds as the formation line.

14. The device according to claim 8, characterized in that The forward modeling module is specifically used for: According to the range of the logging instrument response, along the well trajectory, a computational model for forward modeling is obtained; The computational model is used to forward model the constrained initial formation model to determine the forward modeling curve and the forward modeling formation model.

15. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for executing the method according to any one of claims 1 to 7.

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