CN114842159B - Three-dimensional geologic model splicing method for complex structure of sedimentary stratum - Google Patents
Three-dimensional geologic model splicing method for complex structure of sedimentary stratum Download PDFInfo
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Abstract
The invention relates to the technical field of geological modeling, and particularly discloses a three-dimensional geological model splicing method for a complex structure of a sedimentary stratum, which comprises the steps of collecting and cleaning collected original data, and determining modeling parameters; creating a data model large work area on a server according to modeling parameters; newly building stratum and fault in the large work area of the data model according to the original data; dividing a large work area of a data model into a plurality of sub work areas according to standard framing, setting an effective layer of a stratum of each sub work area in combination with original data, and determining a stratum deposition sequence of the corresponding sub work area; downloading model data of the sub-work areas to the local area on the large work area of the data model by a plurality of persons at the same time, respectively completing the construction of the three-dimensional geological model, and transmitting all the three-dimensional geological models of the sub-work areas back to the corresponding positions of the large work area of the data model; and splicing the three-dimensional geological models of each adjacent sub-work area on the large work area of the data model. According to the scheme, multi-person synchronous modeling can be realized, and the modeling efficiency is improved.
Description
Technical Field
The invention relates to the technical field of geological modeling, in particular to a three-dimensional geological model splicing method for a sedimentary stratum complex structure.
Background
In order to realize accurate and visual analysis of geological conditions, three-dimensional geological modeling techniques have been developed accordingly, and three-dimensional geological models play an increasingly important role in geological work. The three-dimensional digitization of the geological work can intuitively display the geological condition, can assist and support technical decisions of the geological industry, and provides three-dimensional data support for geological work research. Through three-dimensional geological modeling work, important geological data can be provided for various complicated geological problems encountered later, and meanwhile, rich geological information can be provided for urban planning, construction and the like.
The existing three-dimensional geologic modeling can only utilize one operator to perform three-dimensional geologic modeling in the same time, but the range of modeling is relatively large when the actual three-dimensional geologic modeling is performed, the time required for the operator to complete the whole three-dimensional geologic modeling is relatively long, and the corresponding modeling efficiency is not very high.
Therefore, a three-dimensional geologic model splicing method for a complex structure of a sedimentary stratum is urgently needed, and can realize multi-person synchronous modeling and improve corresponding modeling efficiency.
Disclosure of Invention
The technical problem solved by the invention is to provide a three-dimensional geologic model splicing method for a sedimentary stratum complex structure, which can synchronously model a plurality of persons and improve the modeling efficiency.
The basic scheme provided by the invention is as follows: a three-dimensional geologic model splicing method for a complex structure of a sedimentary stratum comprises the following steps:
a data arrangement step, namely collecting and cleaning the collected original data, and determining modeling parameters;
creating a data model large work area on a server according to modeling parameters;
a stratum and fault initial building step, namely clearing structural morphological characteristics and stratum spreading conditions in the large work area of the data model according to the original data, and building a stratum and a fault in the large work area of the data model, wherein the stratum is arranged according to a relation of up-down and up-down, so as to form a corresponding stratum grid;
dividing a large work area of a data model into a plurality of sub work areas according to standard framing, setting an effective layer of each sub work area stratum in combination with original data, and determining a stratum deposition sequence of the corresponding sub work area;
a sub-work area three-dimensional geological model construction step, namely downloading model data of the sub-work area to the local area on a data model large work area by a plurality of persons at the same time, respectively completing the three-dimensional geological model construction, and transmitting all the sub-work area three-dimensional geological models back to the corresponding positions of the data model large work area;
and a three-dimensional geological model splicing step, namely splicing the three-dimensional geological models of each adjacent sub-work area on the large work area of the data model.
The principle and the advantages of the invention are as follows:
firstly, creating a corresponding large work area of a data model according to modeling parameters, defining an area needing to be subjected to geological modeling, clearing structural morphological characteristics and stratum spreading conditions in the range of the large work area of the data model, and forming a corresponding stratum grid according to newly built corresponding stratum and fault, so that the whole large work area of the data model is more complete and vivid, and dividing the large work area of the data model into a plurality of sub work areas through standard framing, thereby completing the block division of the whole geological modeling area. Then different operators can select the corresponding sub-work area, download the model data of the corresponding sub-work area on the data model big work area, and construct the three-dimensional geological model of the corresponding sub-work area according to the corresponding model data, so as to finish the three-dimensional geological modeling of the sub-work area, then the corresponding sub-work area three-dimensional geological model is transmitted back to the corresponding sub-work area on the corresponding data model big work area, and then all the adjacent sub-work area three-dimensional geological models are spliced, thereby completing the three-dimensional geological modeling of the whole data model big work area.
Firstly, establishing a corresponding data model large work area on the space of the whole modeling, dividing the corresponding data model large work area into a plurality of sub work areas, downloading model data corresponding to the corresponding sub work areas on the corresponding data model large work area during specific modeling, carrying out three-dimensional geological modeling on the sub work areas through the model data, and uploading the corresponding model back to the data model large work area, so that a plurality of people can download the model data of the plurality of sub work areas, synchronously carry out three-dimensional geological modeling on the respective sub work areas, and synchronously modeling for a plurality of people is realized, so that the corresponding modeling efficiency is greatly improved, and simultaneously, the workload of a single operator is greatly reduced;
meanwhile, after the three-dimensional geological modeling of the sub-work area is completed, reasonable splicing among the three-dimensional geological modeling of the sub-work area is also carried out, so that the integration of the construction and splicing of the three-dimensional geological model of the sub-work area is realized, the process is simplified, and the time required by the corresponding geological modeling is greatly reduced.
Further, the modeling parameters comprise a modeling range, model precision, stratum grid size, fault grid size, a coordinate system, stratum lithology dividing units and modeling depth.
The diversification of modeling parameters may allow for more comprehensive and accurate modeling thereafter.
Further, the construction step of the three-dimensional geological model of the sub-work area comprises the following steps:
downloading the sub-work area, namely simultaneously downloading model data of the corresponding sub-work area on the corresponding data model large-work area by a plurality of persons, wherein the model data comprises a model range, a model depth, a model grid and a stratum grid;
a standardization processing step, namely carrying out standardization processing on the original data which is washed and finished in the downloaded range of the corresponding sub-work area; the original data comprise topographic data, fault line data, stratum line data, attitude data, geological profile data, drilling data and geophysical prospecting profile data;
a data importing step, namely importing the processed topographic data into the sub-work area model, generating a DEM surface, and importing other standardized processed data;
a construction interpretation step, namely newly creating a three-dimensional section in the direction of a model boundary and a vertical construction line, drawing the section based on the imported data and the adjacent plane geological map, and processing the drawn section into broken edge data and equidistant discrete point data;
a fault modeling step, namely constructing a corresponding fault model according to fault boundary data and corresponding fault edge data;
a stratum modeling step, namely constructing a stratum model according to stratum boundary data, drilling data, equidistant discrete point data of a corresponding section and stratum surface data;
a model local optimization step, judging whether an abnormal problem occurs in the stratum, if so, adding or modifying interpretation data at the corresponding abnormal position, and carrying out local optimization treatment;
a step of constructing a structural model, namely setting corresponding intersection relations based on the existing fault model and stratum model, and generating a corresponding sub-work area three-dimensional geological model;
and uploading the generated sub-work area three-dimensional geological model to a position corresponding to the large work area of the data model.
When the three-dimensional geological model of the sub-work area is built, firstly, model data corresponding to the model to be built are acquired, and in consideration of the fact that the data acquired by different sub-work areas are different, standardized processing is carried out on the data, so that unification of initial data can be ensured, the data processing speed is greatly reduced, and then the corresponding fault model and stratum model are built.
Further, the three-dimensional geologic model splicing step includes:
a sequence acquisition step, namely acquiring a currently uploaded sub-work area three-dimensional geological model and a stratum deposition sequence of the sub-work area three-dimensional geological model adjacent to the currently uploaded sub-work area three-dimensional geological model on a large work area of the data model;
a model splicing step, namely judging the relation of stratum deposition sequences between the two stratum deposition sequences according to the acquired stratum deposition sequences, and correspondingly splicing according to the corresponding relation, wherein specifically, when the stratum deposition sequences between the two stratum deposition sequences are completely consistent, the stratum is directly spliced in a continuous curved surface mode;
when the stratum deposition sequences between the two stratum deposition sequences are not completely consistent, the same stratum is directly spliced in a single stratum mode, the phase change and combination stratum adjusts the modeling range of the stratum according to the stratum spreading condition, and when the plane modeling ranges of different stratum under the same geologic time unit of adjacent sub-work areas are complementary, the model is directly spliced in the longitudinal direction;
when one stratum is in an exposed state and the other stratum is in an unexposed state, if the corresponding modeling depth meets the requirement, the treatment is not carried out, and if the modeling depth does not meet the requirement, the unexposed stratum is analyzed, modeled and spliced according to the data such as the stratum thickness, the drilling layering, the geophysical prospecting interpretation, the occurrence and the like at the periphery of the map.
When the adjacent sub-work area three-dimensional geologic models are spliced, stratum deposition sequences between the two are compared and judged, the two stratum deposition sequences are directly spliced under the condition of complete consistency, and the same stratum is directly spliced under the condition of incomplete consistency, and different strata are effective horizons are adjusted to control the whole modeling range, so that the three-dimensional geologic models can be completely spliced in space, and the originality of data is kept on a plane. Different stratum deposition sequences are spliced differently, so that the problems of poor corresponding splicing effect and insufficient reduction degree caused by a single splicing method can be avoided, and the corresponding splicing accuracy is greatly improved.
Further, the method further comprises the following steps:
a splicing checking step, after splicing is completed, checking whether splicing between the corresponding three-dimensional geological models of the adjacent sub-work areas is correct, if not, downloading the corresponding three-dimensional geological model splicing areas, and continuing to carry out the sub-work area three-dimensional geological model construction step;
and a model updating step, namely downloading model data based on an updating range, carrying out re-modeling processing and returning.
And judging whether the splicing is correct or not in time after the model is spliced, so that the finally obtained model is more real and reasonable, and meanwhile, the model is updated locally, and the corresponding updating workload can be greatly reduced.
Further, the splice checking step includes:
model checking: downloading model data at a splicing part in a large work area of a data model, loading the model data in local modeling software, and checking whether the problems of model holes, fault missing, formation surface discontinuity and the like exist layer by layer;
a section checking step: and directly drawing a section line at the joint of the large work area model, cutting to obtain a structural section, and checking whether stratum and fault of the section accord with actual geological conditions.
The corresponding judgment can be more accurate through the inspection of the model and the section.
Further, the step of locally updating the model includes:
an update area determining step of determining an update range according to the newly added data and creating a corresponding working area in a large work area of the data model;
a data downloading step of downloading model data of the created working area;
updating, namely newly adding or modifying interpretation data on the basis of original model data, and re-modeling;
and a back transmission step, namely transmitting the edited and modified model data back to the large work area of the data model.
The method has the advantages that whether local updating is carried out or not is judged in the early stage, so that the later local updating is more accurate, the area needing updating is determined when the local updating is needed, and then the corresponding area needing updating is downloaded, so that the local updating in the three-dimensional geological model of the whole data model large work area can be well carried out in the later stage, the reconstruction of the three-dimensional geological model of the whole data model large work area when the corresponding local data is found to be wrong is avoided, the workload of operators is greatly reduced, and meanwhile, the maintenance efficiency of the later-stage model is also improved.
Drawings
FIG. 1 is a flow chart of a method for stitching a three-dimensional geologic model of a complex structure of a sedimentary strata in accordance with an embodiment of the invention.
Fig. 2 is a view showing different splicing of adjacent map strata in accordance with the first embodiment of the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
an example is substantially as shown in figure 1: a three-dimensional geologic model splicing method for a complex structure of a sedimentary stratum comprises the following steps:
a data arrangement step, namely collecting and cleaning the collected original data, and determining modeling parameters; in this embodiment, the modeling parameters include a modeling range, a model accuracy, a formation mesh size, a fault mesh size, a coordinate system, a formation lithology dividing unit, and a modeling depth.
Creating a data model large work area on a server according to modeling parameters;
a stratum and fault initial building step, namely clearing structural morphological characteristics and stratum spreading conditions in the large work area of the data model according to the original data, and building a stratum and a fault in the large work area of the data model, wherein the stratum is arranged according to a relation of up-down and up-down, so as to form a corresponding stratum grid;
dividing a large work area of a data model into a plurality of sub work areas according to standard framing, setting an effective layer of each sub work area stratum in combination with original data, and determining a stratum deposition sequence of the corresponding sub work area; in this embodiment, the following is 1:5 ten thousand standard frames create sub-work areas.
A sub-work area three-dimensional geological model construction step, namely downloading model data of the sub-work area to the local area on a data model large work area by a plurality of persons at the same time, respectively completing the three-dimensional geological model construction, and transmitting all the sub-work area three-dimensional geological models back to the corresponding positions of the data model large work area; in this embodiment, when downloading model data corresponding to each sub-area, all model data must be downloaded in a large data model area in order to ensure that the formation grids of each sub-area can be connected.
Specifically, the construction steps of the three-dimensional geological model of the sub-work area comprise:
downloading a sub-work area, namely simultaneously downloading model data of the corresponding sub-work area on a large work area of a data model by a plurality of persons, wherein the model data comprise a model range, a model depth, model grids and stratum grids;
a normalization processing step, which is to perform normalization processing on the original data which is cleaned and finished in the downloaded sub-work area; the original data comprise topographic data, fault line data, stratum line data, attitude data, geological profile data, drilling data and geophysical prospecting profile data;
a data importing step, namely importing the processed topographic data into the sub-work area model, generating a DEM surface, and importing other standardized processed data;
a construction interpretation step, namely newly creating a three-dimensional section in the direction of a model boundary and a vertical construction line, drawing the section based on the imported data and the adjacent plane geological map, and processing the drawn section into broken edge data and equidistant discrete point data;
a fault modeling step, namely constructing a corresponding fault model according to fault boundary data and corresponding fault edge data; in this embodiment, when performing fault modeling, it is required to ensure that fault plane data corresponding to a fault model of a modeled block is not changed, first, whether a fault created by a previous frame is correct within a scope of the previous frame is determined, if so, the fault is not processed, and formation modeling is directly performed; if the modeling data is incorrect, the modeling data used by the modeled map block is imported, the local area data is adjusted, and stratum modeling is performed after the fault plane is regenerated.
After the whole geological model is built, when a fault is found to have a problem and needs to be modified after the fault is returned, all areas involved in modifying the fault need to be downloaded, then the fault is modified, and then the stratum modeling is carried out again.
A stratum modeling step, namely constructing a stratum model according to stratum boundary data, drilling data, equidistant discrete point data of a corresponding section and stratum surface data;
a model local optimization step, judging whether an abnormal problem occurs in the stratum, if so, adding or modifying interpretation data at the corresponding abnormal position, and carrying out local optimization treatment; the method specifically comprises the steps of optimizing stratum surface deformity, stratum threading, breaking distance abnormality and extending stratum surface along fault abnormality. The fault distance abnormality optimizing method comprises the steps of firstly, modifying invalid distances of stratum discrete points on two sides of a fault or deleting out crossing points; and two independent curved surface sheets are established on two sides of the fault, and the boundary of the two curved surface sheets is adjusted to control the curved surface sheets not to cross the fault surface to finally generate the fault surface.
A step of constructing a structural model, namely setting corresponding intersection relations based on the existing fault model and stratum model, and generating a corresponding sub-work area three-dimensional geological model; in this embodiment, since the working area of the model is slightly larger than the sub-working area, there is a partial overlap between the positions where the two models are connected, and the data of the overlapping portions must be completely consistent. The intersection setting of all models is returned to the large work area, and in order to make the intersection setting of all models not contradict each other, the intersection relation setting of all models must follow the same rule.
And uploading the generated sub-work area three-dimensional geological model to a position corresponding to the large work area of the data model.
And a sub-work area three-dimensional geological model construction step, namely downloading model data of the sub-work area to the local area on the data model large work area by a plurality of persons at the same time, respectively completing the three-dimensional geological model construction, and transmitting all the sub-work area three-dimensional geological models back to the corresponding positions of the data model large work area. Firstly, a working area is created for a sub-working area of the model data, the range of the working area is slightly larger than the area of the sub-working area corresponding to the actual model data in order to achieve the aim of splicing, a certain part of overlap exists between two adjacent models, and the model data of the overlapped part is subject to uploading of the models. Of course, when an operator downloads the model data, the sub-work area is locked, so that the model is not downloaded by other people, a plurality of people repeatedly construct a three-dimensional geological model of a certain sub-work area, and meanwhile, adjacent models corresponding to the sub-work area are locked, and therefore splicing errors between the adjacent models can be avoided.
Specifically, the three-dimensional geologic model splicing step includes:
a sequence acquisition step, namely acquiring a currently uploaded sub-work area three-dimensional geological model and a stratum deposition sequence of the sub-work area three-dimensional geological model adjacent to the currently uploaded sub-work area three-dimensional geological model on a large work area of the data model;
a model splicing step, namely judging the relation of stratum deposition sequences between the two stratum deposition sequences according to the acquired stratum deposition sequences, and correspondingly splicing according to the corresponding relation, wherein specifically, when the stratum deposition sequences between the two stratum deposition sequences are completely consistent, the stratum is directly spliced in a continuous curved surface mode; for example, the stratum deposition sequences corresponding to the three-dimensional geological model A of the sub-work area and the three-dimensional geological model B of the sub-work area are stratum a, stratum B and stratum c.
When the stratum deposition sequences between the two stratum deposition sequences are not completely consistent, the same stratum is directly spliced in a single stratum mode, the phase change and combination stratum adjusts the modeling range of the stratum according to the stratum spreading condition, and when the plane modeling ranges of different stratum under the same geologic time unit of adjacent sub-work areas are complementary, the model is directly spliced in the longitudinal direction; for example, a three-dimensional geological model C of a sub-work area corresponds to a stratum deposition sequence of stratum a, stratum b and stratum C; and the stratum deposition sequences corresponding to the sub-work area three-dimensional geological model B are stratum a, stratum d and stratum e and stratum c. In the face of this situation, the modeling range of the current stratum is controlled by adjusting the effective horizon, for example, the effective ranges of the stratum d and the stratum e are adjusted to the sub-work area range corresponding to the sub-work area model B, and the effective range of the stratum B is adjusted to the sub-work area range of the sub-work area three-dimensional geological model C, so that the stratum d and e and the stratum B are in plane accord with the characteristics of the plane geological map, and are completely connected in space.
When one stratum is in an exposed state and the other stratum is in an unexposed state, if the corresponding modeling depth meets the requirement, the treatment is not carried out, and if the modeling depth does not meet the requirement, the unexposed stratum is analyzed, modeled and spliced according to the data such as the stratum thickness, the drilling layering, the geophysical prospecting interpretation, the occurrence and the like at the periphery of the map. The step of splicing the unexposed stratum in the embodiment is mainly aimed at the condition that the bottom of the stratum is not exposed.
In another embodiment, the method further comprises a multi-plate stratum splicing step, wherein the land edge fracture and the sub-work area range are taken as modeling ranges, three-dimensional geological construction is carried out, and the land edge fracture zone is filled with rock mass.
In this step, more layers of the multi-plate are spliced, and because the deposition environments of different plates are greatly different, the formation sequences are greatly different, so that the part can be perfectly spliced, when in splicing, the three-dimensional geological structure is carried out by taking the continental edge fracture and the sub-work area range as modeling ranges, and the continental edge fracture zone is filled with rock mass, so that the plates can be spliced together without unreasonable.
As shown in fig. 2, the corresponding diagram is a splicing diagram between different strata corresponding to adjacent map locks.
A splicing checking step, after splicing is completed, checking whether splicing between the corresponding three-dimensional geological models of the adjacent sub-work areas is correct, if not, downloading the corresponding three-dimensional geological model splicing areas, and continuing to carry out the sub-work area three-dimensional geological model construction step;
specifically, the splicing inspection step includes:
model checking: downloading model data at the splicing position in a large work area of a data model, loading the model data in local modeling software, and checking whether the problems of model holes, fault missing, formation surface discontinuity and the like exist layer by layer.
A section checking step: and directly drawing a section line at the joint of the large work area model, cutting to obtain a structural section, and checking whether stratum and fault of the section accord with actual geological conditions.
And a model updating step, namely downloading model data based on an updating range, carrying out re-modeling processing and returning.
Specifically, the step of locally updating the model includes:
an update area determining step of determining an update range according to the newly added data and creating a corresponding working area in a large work area of the data model;
a data downloading step of downloading model data of the created working area;
updating, namely newly adding or modifying interpretation data on the basis of original model data, and re-modeling;
and a back transmission step, namely transmitting the edited and modified model data back to the large work area of the data model.
In this embodiment, the area to be updated is directly downloaded, and then only the part of the content is edited and modified, instead of downloading the sub-work area three-dimensional geological model corresponding to the area to be updated, and then the area to be updated is modified and edited, so that the workload of operators is greatly reduced, and the working efficiency of the operators can be greatly improved.
The foregoing is merely exemplary of the present invention, and the specific structures and features well known in the art are not described in any way herein, so that those skilled in the art will be able to ascertain all prior art in the field, and will not be able to ascertain any prior art to which this invention pertains, without the general knowledge of the skilled person in the field, before the application date or the priority date, to practice the present invention, with the ability of these skilled persons to perfect and practice this invention, with the help of the teachings of this application, with some typical known structures or methods not being the obstacle to the practice of this application by those skilled in the art. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (6)
1. A three-dimensional geologic model splicing method for a complex structure of a sedimentary stratum is characterized by comprising the following steps of: the method comprises the following steps:
a data arrangement step, namely collecting and cleaning the collected original data, and determining modeling parameters;
creating a data model large work area on a server according to modeling parameters;
a stratum and fault initial building step, namely clearing structural morphological characteristics and stratum spreading conditions in the large work area of the data model according to the original data, and building a stratum and a fault in the large work area of the data model, wherein the stratum is arranged according to a relation of up-down and up-down, so as to form a corresponding stratum grid;
dividing a large work area of a data model into a plurality of sub work areas according to standard framing, setting an effective layer of each sub work area stratum in combination with original data, and determining a stratum deposition sequence of the corresponding sub work area;
a sub-work area three-dimensional geological model construction step, namely downloading model data of the sub-work area to the local area on a data model large work area by a plurality of persons at the same time, respectively completing the three-dimensional geological model construction, and transmitting all the sub-work area three-dimensional geological models back to the corresponding positions of the data model large work area;
a three-dimensional geological model splicing step, namely splicing three-dimensional geological models of all adjacent sub-work areas on a large work area of the data model;
the construction step of the three-dimensional geological model of the sub-work area comprises the following steps:
downloading the sub-work area, namely simultaneously downloading model data of the corresponding sub-work area on the corresponding data model large-work area by a plurality of persons, wherein the model data comprises a model range, a model depth, a model grid and a stratum grid;
a standardization processing step, namely carrying out standardization processing on the original data which is washed and finished in the downloaded range of the corresponding sub-work area; the original data comprise topographic data, fault line data, stratum line data, attitude data, geological profile data, drilling data and geophysical prospecting profile data;
a data importing step, namely importing the processed topographic data into the sub-work area model, generating a DEM surface, and importing other standardized processed data;
a construction interpretation step, namely newly creating a three-dimensional section in the direction of a model boundary and a vertical construction line, drawing the section based on the imported data and the adjacent plane geological map, and processing the drawn section into broken edge data and equidistant discrete point data;
a fault modeling step, namely constructing a corresponding fault model according to fault boundary data and corresponding fault edge data;
a stratum modeling step, namely constructing a stratum model according to stratum boundary data, drilling data, equidistant discrete point data of a corresponding section and stratum surface data;
a model local optimization step, judging whether an abnormal problem occurs in the stratum, if so, adding or modifying interpretation data at the corresponding abnormal position, and carrying out local optimization treatment;
a step of constructing a structural model, namely setting corresponding intersection relations based on the existing fault model and stratum model, and generating a corresponding sub-work area three-dimensional geological model;
and uploading the generated sub-work area three-dimensional geological model to a position corresponding to the large work area of the data model.
2. The method for stitching a three-dimensional geologic model of a complex structure of a sedimentary strata of claim 1, wherein the method comprises the steps of: the modeling parameters comprise a modeling range, model precision, stratum grid size, fault grid size, a coordinate system, stratum lithology dividing units and modeling depth.
3. The method for stitching a three-dimensional geologic model of a complex structure of a sedimentary strata according to claim 2, wherein the method comprises the steps of: the three-dimensional geological model splicing step comprises the following steps:
a sequence acquisition step, namely acquiring stratum deposition sequences of the currently uploaded sub-work area three-dimensional geological model and the sub-work area three-dimensional geological model adjacent to the currently uploaded sub-work area three-dimensional geological model on a large work area of the data model;
a model splicing step, namely judging the relation of stratum deposition sequences between the two stratum deposition sequences according to the acquired stratum deposition sequences, and correspondingly splicing according to the corresponding relation, wherein specifically, when the stratum deposition sequences between the two stratum deposition sequences are completely consistent, the stratum is directly spliced in a continuous curved surface mode;
when the stratum deposition sequences between the two stratum deposition sequences are not completely consistent, the same stratum is directly spliced in a single stratum mode, the phase change and combination stratum adjusts the modeling range of the stratum according to the stratum spreading condition, and when the plane modeling ranges of different stratum under the same geologic time unit of adjacent sub-work areas are complementary, the model is directly spliced in the longitudinal direction;
when one stratum is in an exposed state and the other stratum is in an unexposed state, if the corresponding modeling depth meets the requirement, the treatment is not carried out, and if the modeling depth does not meet the requirement, the analysis, modeling and splicing are carried out on the unexposed stratum according to the stratum thickness around the map, the layering of the drilling, the geophysical prospecting and the occurrence data.
4. A method of stitching a three-dimensional geologic model of a complex structure of a sedimentary strata as claimed in claim 3, wherein: further comprises:
a splicing checking step, after splicing is completed, checking whether splicing between the corresponding three-dimensional geological models of the adjacent sub-work areas is correct, if not, downloading the corresponding three-dimensional geological model splicing areas, and continuing to carry out the sub-work area three-dimensional geological model construction step;
and a model updating step, namely downloading model data based on an updating range, carrying out re-modeling processing and returning.
5. The method for stitching a three-dimensional geologic model of a complex structure of a sedimentary strata of claim 4, wherein the method comprises the steps of: the splice checking step includes:
model checking: downloading model data at a splicing part in a large work area of a data model, loading the model data in local modeling software, and checking whether the problems of model holes, fault defects and formation surface discontinuity exist layer by layer;
a section checking step: and directly drawing a section line at the joint of the large work area model, cutting to obtain a structural section, and checking whether stratum and fault of the section accord with actual geological conditions.
6. The method for stitching a three-dimensional geologic model of a complex structure of a sedimentary strata of claim 5, wherein the method comprises the steps of: the step of locally updating the model comprises the following steps:
an update area determining step of determining an update range according to the newly added data and creating a corresponding working area in a large work area of the data model;
a data downloading step of downloading model data of the created working area;
updating, namely newly adding or modifying interpretation data on the basis of original model data, and re-modeling;
and a back transmission step, namely transmitting the edited and modified model data back to the large work area of the data model.
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