1. A method for constructing a three-dimensional geological model including pinch-out processing is characterized by comprising the following steps:

acquiring standardized drilling data, and acquiring stratum missing information according to the drilling data;

judging whether stratum pinch-out processing is needed or not according to stratum missing information, if so, acquiring the average drilling hole distance between two drilling holes in a modeling area, and acquiring the position to be pinched-out according to the actual distance between the drilling hole to be pinched-out and the pinch-out drilling hole and the average drilling hole distance;

determining the pinch-out direction of the drill hole to be pinched out according to the stratum missing information, determining a stratum boundary according to the position to be pinched out and the pinch-out direction, carrying out pinch-out treatment layer by layer to form a stratum constraint boundary, and constructing a three-dimensional geologic body according to the stratum constraint boundary.

2. The method for constructing a three-dimensional geological model including pinch-out processing according to claim 1, wherein judging whether stratum pinch-out processing is required according to stratum deficiency information specifically comprises: and if the missing stratum exists, carrying out stratum pinch-out, otherwise, carrying out stratum pinch-out.

3. The method for constructing a three-dimensional geological model including pinch-out processing according to claim 1, wherein the obtaining of the average borehole distance between two boreholes in the modeled region specifically comprises:

obtaining the area A of the modeling area and the number N of the drill holes, and obtaining the control area A of a single drill hole_hAccording to the control area A of said single bore hole_hAnd an average distance formula, obtaining the average drilling distance between two drilling holes, wherein the average drilling distance formula isD_hTo take the average borehole distance between boreholes.

4. The method for constructing a three-dimensional geological model including pinch-out processing according to claim 1, wherein the obtaining of the position to be pinched-out is performed according to the actual distance between the drill hole to be pinched-out and the pinch-out drill hole and the average drill hole distance, and specifically comprises:

and if the actual distance between the drill hole to be pinch-out and the pinch-out drill hole is greater than the average drill hole distance, taking the position which is equal to the average drill hole distance away from the drill hole to be pinch-out as the position to be pinch-out, otherwise, determining a pinch-out point coefficient according to the minimum thickness, the maximum layer thickness, the average layer thickness and the layer thickness median of the lost stratum corresponding to the drill hole to be pinch-out, and determining the position to be pinch-out according to the pinch-out point coefficient and the actual distance between the drill hole to be pinch-out and the pinch-out drill hole.

5. The method for constructing a three-dimensional geological model including pinch-out processing according to claim 4, wherein the determining of the pinch-out point coefficient according to the minimum thickness, the maximum layer thickness, the average layer thickness and the layer thickness median of the missing formation corresponding to the borehole to be pinched-out specifically comprises:

obtaining the smaller value of the average layer thickness and the layer thickness median, if the thickness of the pinch-out of the current stratum is greater than or equal to the minimum thickness and less than the smaller value, determining a pinch-out point coefficient by using a first calculation formula of the pinch-out point coefficient, and if the thickness of the pinch-out of the current stratum is greater than or equal to the smaller value and less than or equal to the maximum layer thickness, determining the pinch-out point coefficient by using a second calculation formula of the pinch-out point coefficient;

wherein the first calculation formula of the point coefficient isThe second calculation formula of the point coefficient ist is the thickness of the current formation pinch-out, t_aFor the smaller of said mean layer thickness and median layer thickness, t_minIs the minimum thickness of the formation to be pinched off, t_maxAnd pc is the pinch-out point coefficient, which is the maximum thickness of the stratum to be pinched out.

6. The method for constructing a three-dimensional geological model including pinch-out processing according to claim 4, wherein the determining the position to be pinched-out according to the pinch-out point coefficient and the actual distance between the drill hole to be pinched-out and the pinch-out drill hole specifically comprises: and multiplying the pinch-out point coefficient and the actual distance between the drill hole to be pinched out and the pinch-out drill hole to obtain a product value, and taking the position of the product value from the drill hole to be pinched out as the position to be pinched out.

7. The method for constructing a three-dimensional geological model including pinch-out processing according to claim 1, wherein the formation missing information includes a missing formation position, and the determining of the pinch-out direction of the borehole to be pinched out according to the formation missing information specifically includes:

if the missing stratum position is a stratum bottom plate, the pinch-out direction is from the stratum bottom plate to the pinch-out position;

if the stratum position is a stratum top plate, the pinch-off direction is from the stratum top plate to the pinch-off position;

and if the stratum position is the position between the stratum bottom plate and the stratum top plate, the pinch-out direction is that the stratum top plate and the stratum bottom plate are respectively horizontally pushed to intersect at the pinch-out position.

8. A three-dimensional geological model construction device comprising pinch-out treatment is characterized by comprising a stratum missing information acquisition module, a position to be pinched-out acquisition module and a model construction module;

the stratum missing information acquisition module is used for acquiring the borehole data after standardized processing and acquiring stratum missing information according to the borehole data;

the acquisition module of the position to be pinch-out is used for judging whether stratum pinch-out processing is needed or not according to stratum missing information, if so, acquiring the average drilling hole distance between two drilling holes in the modeling area, and acquiring the position to be pinch-out according to the actual distance between the drilling hole to be pinch-out and the pinch-out drilling hole and the average drilling hole distance;

the model building module is used for determining the pinch-out direction of the drill hole to be pinched out according to the stratum missing information, determining a stratum boundary according to the position to be pinched out and the pinch-out direction, carrying out pinch-out treatment layer by layer to form a stratum constraint boundary, and building a three-dimensional geologic body according to the stratum constraint boundary.

9. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program that, when executed by the processor, implements a method of constructing a three-dimensional geological model including a pinch-out process according to any of claims 1-7.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of constructing a three-dimensional geological model including pinch-out as claimed in any one of claims 1-7.

Background

Three-dimensional geological modeling becomes an important means for engineering geological survey analysis and design, good three-dimensional, and model expression can more accurately reflect real geological scenes. The stratum pinch-out refers to the phenomenon that the thickness of a rock stratum is thinned at the edge of a sedimentary basin so as to disappear; when a formation loss occurs between adjacent boreholes, the missing formation necessarily spikes up between the boreholes. The reasonable stratum pinch-out processing method is to realize the automatic connection and drawing of the stratum curved surfaces, and is a precondition for establishing a reliable three-dimensional geological model and a professional geological profile map. In the prior art, the stratum pinch-out treatment method is unreasonable, so that the constructed three-dimensional geological model has low precision.

Disclosure of Invention

In view of the above, there is a need for a method, an apparatus, an electronic device and a computer readable storage medium for constructing a three-dimensional geological model with high construction accuracy.

In order to achieve the above object, the present invention provides a method for constructing a three-dimensional geological model including pinch-out processing, comprising:

acquiring standardized drilling data, and acquiring stratum missing information according to the drilling data;

judging whether stratum pinch-out processing is needed or not according to stratum missing information, if so, acquiring the average drilling hole distance between two drilling holes in a modeling area, and acquiring the position to be pinched-out according to the actual distance between the drilling hole to be pinched-out and the pinch-out drilling hole and the average drilling hole distance;

determining the pinch-out direction of the drill hole to be pinched out according to the stratum missing information, determining a stratum boundary according to the position to be pinched out and the pinch-out direction, carrying out pinch-out treatment layer by layer to form a stratum constraint boundary, and constructing a three-dimensional geologic body according to the stratum constraint boundary.

Further, whether stratum pinch-out treatment is needed or not is judged according to stratum missing information, and the method specifically comprises the following steps: and if the missing stratum exists, carrying out stratum pinch-out, otherwise, carrying out stratum pinch-out.

Further, the acquiring an average drilling distance between two drilling holes in the modeling area specifically includes:

obtaining the area A of the modeling area and the number N of the drill holes, and obtaining the control area A of a single drill hole_hAccording to the control area A of said single bore hole_hAnd an average distance formula, obtaining the average drilling distance between two drilling holes, wherein the average drilling distance formula isD_hTo take the average borehole distance between boreholes.

Further, according to the actual distance between the drill hole to be pinch-out and the pinch-out drill hole and the average drill hole distance, the position to be pinch-out is obtained, and the method specifically comprises the following steps:

and if the actual distance between the drill hole to be pinch-out and the pinch-out drill hole is greater than the average drill hole distance, taking the position which is equal to the average drill hole distance away from the drill hole to be pinch-out as the position to be pinch-out, otherwise, determining a pinch-out point coefficient according to the minimum thickness, the maximum layer thickness, the average layer thickness and the layer thickness median of the lost stratum corresponding to the drill hole to be pinch-out, and determining the position to be pinch-out according to the pinch-out point coefficient and the actual distance between the drill hole to be pinch-out and the pinch-out drill hole.

Further, determining a point extinction coefficient according to the minimum thickness, the maximum layer thickness, the average layer thickness and the layer thickness median of the lost stratum corresponding to the borehole to be extinguished, specifically comprising:

obtaining the smaller value of the average layer thickness and the layer thickness median, if the thickness of the pinch-out of the current stratum is greater than or equal to the minimum thickness and less than the smaller value, determining a pinch-out point coefficient by using a first calculation formula of the pinch-out point coefficient, and if the thickness of the pinch-out of the current stratum is greater than or equal to the smaller value and less than or equal to the maximum layer thickness, determining the pinch-out point coefficient by using a second calculation formula of the pinch-out point coefficient;

wherein the content of the first and second substances,the first calculation formula of the point coefficient isThe second calculation formula of the point coefficient isWherein the content of the first and second substances,t is the thickness of the current formation pinch-out, t_aFor the smaller of said mean layer thickness and median layer thickness, t_minIs the minimum thickness of the formation to be pinched off, t_maxAnd pc is the pinch-out point coefficient, which is the maximum thickness of the stratum to be pinched out.

Further, according to the pinch-out point coefficient, the actual distance between the drill hole to be pinched out and the pinch-out drill hole, the position to be pinched out is determined, and the method specifically comprises the following steps: and multiplying the pinch-out point coefficient and the actual distance between the drill hole to be pinched out and the pinch-out drill hole to obtain a product value, and taking the position of the product value from the drill hole to be pinched out as the position to be pinched out.

Further, determining a pinch-out direction in the missing stratum of the pinch-out borehole according to the stratum position, specifically comprising:

if the missing stratum position is a stratum bottom plate, the pinch-out direction is from the stratum bottom plate to the pinch-out position;

if the stratum position is a stratum top plate, the pinch-off direction is from the stratum top plate to the pinch-off position;

and if the stratum position is the position between the stratum bottom plate and the stratum top plate, the pinch-out direction is that the stratum top plate and the stratum bottom plate are respectively horizontally pushed to intersect at the pinch-out position.

The invention also provides a three-dimensional geological model construction device comprising pinch-out treatment, which comprises a stratum missing information acquisition module, a position to be pinched-out acquisition module and a model construction module;

the stratum missing information acquisition module is used for acquiring the borehole data after standardized processing and acquiring stratum missing information according to the borehole data;

the acquisition module of the position to be pinch-out is used for judging whether stratum pinch-out processing is needed or not according to stratum missing information, if so, acquiring the average drilling hole distance between two drilling holes in the modeling area, and acquiring the position to be pinch-out according to the actual distance between the drilling hole to be pinch-out and the pinch-out drilling hole and the average drilling hole distance;

the model building module is used for determining the pinch-out direction of the drill hole to be pinched out according to the stratum missing information, determining a stratum boundary according to the position to be pinched out and the pinch-out direction, carrying out pinch-out treatment layer by layer to form a stratum constraint boundary, and building a three-dimensional geologic body according to the stratum constraint boundary.

The invention also provides an electronic device, which comprises a memory and a processor, wherein the memory is stored with a computer program, and when the computer program is executed by the processor, the method for constructing the three-dimensional geological model with pinch-out processing according to any technical scheme is realized.

The invention also provides a computer-readable storage medium on which a computer program is stored, wherein the computer program, when executed by a processor, implements a method of constructing a three-dimensional geological model including pinch-out processing according to any of the aspects.

Compared with the prior art, the invention has the beneficial effects that: acquiring stratum missing information according to the drilling data by acquiring the drilling data after standardized processing; judging whether stratum pinch-out processing is needed or not according to stratum missing information, if so, acquiring the average drilling hole distance between two drilling holes in a modeling area, and acquiring the position to be pinched-out according to the actual distance between the drilling hole to be pinched-out and the pinch-out drilling hole and the average drilling hole distance; determining the pinch-out direction of the drill hole to be pinched out according to the stratum missing information, determining a stratum boundary according to the position to be pinched out and the pinch-out direction, carrying out pinch-out treatment layer by layer to form a stratum constraint boundary, and constructing a three-dimensional geologic body according to the stratum constraint boundary; and the three-dimensional geological model with higher construction precision is realized.

Drawings

FIG. 1 is a schematic flow chart of an embodiment of a method for constructing a three-dimensional geological model including pinch-out processing according to the present invention;

FIG. 2 is a first schematic diagram of pinch-out directions according to an embodiment of the present invention;

FIG. 3 is a second schematic diagram of pinch-out directions according to an embodiment of the present invention;

FIG. 4 is a third schematic diagram of pinch-out directions according to an embodiment of the present invention;

fig. 5 is a block diagram of a three-dimensional geological model building apparatus including pinch-out processing according to an embodiment of the present invention.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

The invention discloses a method for constructing a three-dimensional geological model with pinch-out treatment, which has a flow diagram, as shown in fig. 1, and comprises the following steps:

s1, acquiring the standardized drilling data, and acquiring stratum missing information according to the drilling data;

s2, judging whether stratum pinch-out processing is needed or not according to stratum missing information, if so, acquiring the average drilling hole distance between two drilling holes in the modeling area, and acquiring the position to be pinched-out according to the actual distance between the drilling hole to be pinched-out and the pinch-out drilling hole and the average drilling hole distance;

s3, determining the pinch-out direction of the drill hole to be pinched out according to the stratum missing information, determining a stratum boundary according to the position to be pinched out and the pinch-out direction, carrying out pinch-out treatment layer by layer to form a stratum constraint boundary, and constructing a three-dimensional geologic body according to the stratum constraint boundary.

As a specific example, in step S1, the drilling data in the modeling area is normalized according to the standard stratigraphic rule, a standard drilling database is built, the drilling layering information is read by using the normalized drilling data, and the formation missing information is detected according to the standard stratigraphic rule. It can be understood that the standardized post-processing process may be to perform denoising processing on data, which may specifically refer to the prior art and is not described herein.

As a preferred embodiment, judging whether a formation pinch-out process is required according to the formation missing information specifically includes: and if the missing stratum exists, carrying out stratum pinch-out, otherwise, carrying out stratum pinch-out.

As a preferred embodiment, the obtaining an average borehole distance between two boreholes in the modeling area specifically includes:

obtaining the area A of the modeling area and the number N of the drill holes, and obtaining the control area A of a single drill hole_hAccording to the control area A of said single bore hole_hAnd an average distance formula, obtaining the average drilling distance between two drilling holes, wherein the average drilling distance formula isD_hTo take the average borehole distance between boreholes.

In specific implementation, the area of the modeling area range is A, the number of the drill holes is N, and the control area of a single drill hole isDiameter of individual borehole control, i.e. average distance between two boreholes

As a preferred embodiment, the obtaining the position to be pinch-off according to the actual distance between the drill hole to be pinch-off and the pinch-off drill hole and the average drill hole distance specifically includes:

and if the actual distance between the drill hole to be pinch-out and the pinch-out drill hole is greater than the average drill hole distance, taking the position which is equal to the average drill hole distance away from the drill hole to be pinch-out as the position to be pinch-out, otherwise, determining a pinch-out point coefficient according to the minimum thickness, the maximum layer thickness, the average layer thickness and the layer thickness median of the lost stratum corresponding to the drill hole to be pinch-out, and determining the position to be pinch-out according to the pinch-out point coefficient and the actual distance between the drill hole to be pinch-out and the pinch-out drill hole.

In a specific embodiment, a borehole to be pinch-out (a borehole without formation loss at a certain level) and a borehole to be pinch-out (a borehole with formation loss at a certain level) are selected, and a calculation method for pinch-out of the formation to be pinch-out is determined by comparing the actual distance between the two boreholes and the average borehole distance; and if the actual distance between the two drill holes is greater than the average drilling distance between the two drill holes, taking the position which is away from the average drilling distance of the drill hole position to be pinch-out as the pinch-out point position, otherwise, calculating a pinch-out point coefficient, and determining the position to be pinch-out according to the pinch-out point coefficient and the actual distance between the drill hole to be pinch-out and the pinch-out drill hole.

As a preferred embodiment, determining a pinch-out point coefficient according to the minimum thickness, the maximum layer thickness, the average layer thickness, and the layer thickness median of the missing formation corresponding to the borehole to be pinched out specifically includes:

obtaining the smaller value of the average layer thickness and the layer thickness median, if the thickness of the pinch-out of the current stratum is greater than or equal to the minimum thickness and less than the smaller value, determining a pinch-out point coefficient by using a first calculation formula of the pinch-out point coefficient, and if the thickness of the pinch-out of the current stratum is greater than or equal to the smaller value and less than or equal to the maximum layer thickness, determining the pinch-out point coefficient by using a second calculation formula of the pinch-out point coefficient;

wherein the first calculation formula of the point coefficient isThe second calculation formula of the point coefficient ist is the thickness of the current formation pinch-out, t_aFor the smaller of said mean layer thickness and median layer thickness, t_minIs the minimum thickness of the formation to be pinched off, t_maxAnd pc is the pinch-out point coefficient, which is the maximum thickness of the stratum to be pinched out.

In one particular embodiment of the present invention,has a pinch-out point coefficient pc, and the minimum thickness of the stratum to be pinched out in the modeling area is t_minMaximum layer thickness t_maxAverage layer thickness of t_aveMedian thickness of t_mComparing t_aveAnd t_mAccording to the two values, obtain two values t_aAnd t_b(t_a<t_b)，t_aOf which the smaller value, t_bFor the larger of the two, the thickness of the current bed pinch-out is t.

If t_min≤t<t_aThen there is pc takes the value ofFor example, n is 3, thenIf t_a≤t≤t_maxThen, thenpc takes the value of

As a preferred embodiment, determining the position to be pinch-off according to the pinch-off point coefficient and the actual distance between the drill hole to be pinch-off and the pinch-off drill hole specifically includes: and multiplying the pinch-out point coefficient and the actual distance between the drill hole to be pinched out and the pinch-out drill hole to obtain a product value, and taking the position of the product value from the drill hole to be pinched out as the position to be pinched out.

In one embodiment, the pinch-out point coefficient pc, the actual distance D between the drill hole to be pinched out and the pinch-out drill hole are determined_acMultiplying to obtain the product value pc.D_acThe product value pc.D of the distance to be quenched_acThe position of (2) is used as the position to be pinch-out.

As a preferred embodiment, the formation missing information includes a missing formation position, and the determining, according to the formation missing information, a pinch-out direction of the borehole to be pinched out specifically includes:

if the missing stratum position is a stratum bottom plate, the pinch-out direction is from the stratum bottom plate to the pinch-out position;

if the stratum position is a stratum top plate, the pinch-off direction is from the stratum top plate to the pinch-off position;

and if the stratum position is the position between the stratum bottom plate and the stratum top plate, the pinch-out direction is that the stratum top plate and the stratum bottom plate are respectively horizontally pushed to intersect at the pinch-out position.

In one embodiment, for a pinch-out borehole-missing formation D requiring a pinch-out relationship treatment at a certain level_iD1 Lambda Di-1, D from top to bottom if the level is lower_i、D_i+1ΛD_RIn the formation sequence, i is 1, at this time, the pinch-out direction is a first schematic diagram (R is 3) of the pinch-out direction from the formation bottom plate in the borehole to be pinched out to the pinch-out position, as shown in fig. 2; d1 Lambda Di-1 and D from top to bottom if the level is lower_i、D_i+1ΛD_RA second schematic diagram (R ═ 3) of the pinch-out direction from the formation roof in the borehole to be pinched out to the pinch-out position, as shown in fig. 3, when i ═ R in the formation sequence is set to R; d1 Lambda Di-1 and D from top to bottom if the level is lower_i、D_i+1ΛD_RA third schematic diagram (R ═ 3) of the pinch-out direction, where i ≠ 1 and i ≠ R in the stratum sequence, and at this time, the pinch-out direction is a direction that a top plate and a bottom plate of the stratum in the borehole to be pinched out are respectively pushed horizontally to intersect at the pinch-out position, as shown in fig. 4; and R is the number of stratum sequences.

During specific implementation, connecting stratum lines according to pinch-off positions, determining a stratum boundary, and finishing pinch-off treatment; the large layer, the sub-layer and the sub-layer are firstly carried out, the stratum pinch-out treatment is completed step by step, and a stratum constraint boundary is formed; when a three-dimensional geological model is established, the constraint of a top-bottom DEM (digital elevation model) interface of the model, the constraint of a modeling plane boundary and the constraint of DEM surfaces of all large-layer bottom plates are considered; and constructing the three-dimensional geologic body by using the stratum boundary constraint information and other constraint data (including surface, terrain and address section diagrams, stratum plane partition diagrams and the like) which are finished by the pinch-out treatment.

The embodiment of the invention provides a three-dimensional geological model construction device comprising pinch-out treatment, which has a structural block diagram as shown in fig. 5, and comprises a stratum missing information acquisition module 1, a position to be pinched-out acquisition module 2 and a model construction module 3;

the stratum missing information acquisition module 1 is used for acquiring standardized drilling data and acquiring stratum missing information according to the drilling data;

the acquisition module 2 for the position to be pinch-out is used for judging whether stratum pinch-out processing is needed or not according to stratum missing information, if so, acquiring the average drilling distance between two drilling holes in the modeling area, and acquiring the position to be pinch-out according to the actual distance between the drilling hole to be pinch-out and the pinch-out drilling hole and the average drilling distance;

the model building module 3 is configured to determine a pinch-out direction of the borehole to be pinched out according to the formation missing information, determine a formation boundary according to the position to be pinched out and the pinch-out direction, perform pinch-out treatment layer by layer to form a formation constraint boundary, and build a three-dimensional geologic body according to the formation constraint boundary.

The embodiment of the invention provides electronic equipment, which comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the method for constructing the three-dimensional geological model comprising pinch-out processing is realized.

Embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for constructing a three-dimensional geological model including pinch-out processing according to any of the above embodiments.

Those skilled in the art will appreciate that all or part of the flow of the method implementing the above embodiments may be implemented by a computer program, which is stored in a computer readable storage medium, to instruct related hardware. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory.

A three-dimensional geological model construction method including pinch-out processing, a device, electronic equipment and a computer readable storage medium, wherein stratum missing information is obtained according to drilling data by obtaining the drilling data after standardized processing; judging whether stratum pinch-out processing is needed or not according to stratum missing information, if so, acquiring the average drilling hole distance between two drilling holes in a modeling area, and acquiring the position to be pinched-out according to the actual distance between the drilling hole to be pinched-out and the pinch-out drilling hole and the average drilling hole distance; determining the pinch-out direction of the drill hole to be pinched out according to the stratum missing information, determining a stratum boundary according to the position to be pinched out and the pinch-out direction, carrying out pinch-out treatment layer by layer to form a stratum constraint boundary, and constructing a three-dimensional geologic body according to the stratum constraint boundary; and the three-dimensional geological model with higher construction precision is realized.

According to the technical scheme, the influences of the thickness of the stratum and the distance between the drilled holes are fully considered, and the accurate pinch-off point position is calculated, so that stratum connection can be accurately carried out, the actual stratum control boundary is determined, a profile and a three-dimensional geologic body model which are more in line with the reality are constructed, and basic data support is provided for the utilization and evaluation of the underground space. According to the technical scheme, the missing stratum boundary constraint is accurately and quickly drawn, the manual high participation mode of the traditional stratum pinch-out treatment is broken through, and the working efficiency of three-dimensional geological model construction and geological profile drawing manufacturing is greatly improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.