CN-121999078-A - Method and device for overlapping deposition phase belt diagram of deposition unit level structure

CN121999078ACN 121999078 ACN121999078 ACN 121999078ACN-121999078-A

Abstract

The invention relates to the technical field of image synthesis, in particular to a method and a device for a deposition unit level structure superposition deposition phase belt diagram, which comprise the steps of obtaining multisource information data of a target oil field; the method comprises the steps of constructing a three-dimensional space distribution model based on multi-source information data, acquiring contour line data and fault polygon data based on the three-dimensional space distribution model, acquiring smoothed contour line data, acquiring corrected fault polygon data, splitting a combined fault polygon into a plurality of fault independent units, generating fault polygon data with upper and lower disc marks, acquiring a deposition unit level structure diagram of a target layer, acquiring a deposition phase diagram of the target layer, and superposing the deposition unit level structure diagram and the deposition phase diagram of the target layer as different layers to obtain a plane structure diagram of the target layer. The invention can meet the requirement of developing site personnel for rapidly drawing a two-dimensional plan with fault upper and lower plates and sediment phase distribution.

Inventors

ZHOU HUAJIAN
LI YANLI
WANG YANG
Fu Xiandi
CAI DONGMEI
YANG HUIDONG
LIU CHENXU
LI KAI

Assignees

大庆油田有限责任公司
中国石油天然气股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260130

Claims (10)

1. A method of depositing a cell-level structured superimposed phase diagram, the method comprising the steps of: The method comprises the steps of obtaining multi-source information data of a target oil field, wherein the multi-source information data comprise three-dimensional seismic data, drilling data, logging data and regional geological map of the target oil field; constructing a three-dimensional space distribution model of a deposition unit level structure based on multi-source information data; based on a three-dimensional space distribution model constructed by a deposition unit level, contour line data and fault polygon data are obtained; Automatically smoothing the contour line data to obtain smoothed contour line data; Automatically correcting the fault polygon data to obtain corrected fault polygon data; Splitting the combined fault polygon in the corrected fault polygon data into a plurality of fault independent units; Automatically judging and marking attributes of the upper disc and the lower disc of the faults based on space geometric features of a plurality of fault independent units, and generating fault polygon data with the marks of the upper disc and the lower disc; acquiring a deposition unit level structure diagram of the target layer based on fault polygon data with upper and lower disc marks and the smoothed contour line data; acquiring a deposition phase diagram of a target layer; and superposing the deposition unit level structure diagram and the deposition phase band diagram of the target layer as different layers to obtain a plane structure diagram of the target layer.
2. The method for superimposed deposition of a phase diagram of a deposition unit level structure according to claim 1, wherein the constructing a three-dimensional spatial distribution model of the deposition unit level structure based on multi-source information data comprises the following specific steps: Acquiring a seismic data volume with consistent phase height based on the three-dimensional seismic data; Acquiring a well shock calibration result by using the seismic data volume with the consistent well logging data and phase height; acquiring a time domain seismic interpretation result of the target layer by using a seismic data body with consistent phase height, a well seismic calibration result, drilling data, logging data and a regional geological map; And constructing a three-dimensional space distribution model of the deposition unit level structure based on the time domain seismic interpretation result, the drilling data and the logging data of the target layer.
3. The method for depositing a superimposed phase diagram for a unit level structure of claim 1, wherein the automatic smoothing of the contour line data to obtain smoothed contour line data comprises the following steps: based on a preset geological rationality rule, automatically detecting the equivalent value line data, and identifying and marking distortion points; Based on the distortion points and the fault polygon data, carrying out local smoothing on the contour line by adopting a curve fitting algorithm to generate smoothed contour line data; The method for automatically correcting the fault polygon data to obtain corrected fault polygon data comprises the following specific steps: Extracting a coordinate sequence of the fault polygon data, and calculating the spatial position relation among line segments of the fault polygon based on the coordinate sequence; identifying and positioning geometrical anomalies in the fault polygon data according to the spatial position relationship; And correcting geometrical anomalies in the fault polygon data to obtain corrected fault polygon data.
4. The method for stacking and depositing phase belt patterns by using the deposition unit level structure according to claim 1, wherein the step of splitting the combined fault polygon in the corrected fault polygon data into a plurality of fault independent units comprises the following specific steps: based on the corrected fault polygon data, an outer ring coordinate sequence of the combined fault polygon is obtained; The vector formed by two adjacent coordinates in the outer ring coordinate sequence is determined as the direction vector of each section; calculating an included angle between two adjacent sections of direction vectors corresponding to each coordinate in the outer ring coordinate sequence, and determining the included angle as an adjacent edge included angle corresponding to each coordinate in the outer ring coordinate sequence; When the included angle of the adjacent edge corresponding to each coordinate in the outer ring coordinate sequence is smaller than a preset first included angle threshold value or larger than a preset second included angle threshold value, marking the coordinate as a turning point; Connecting all turning points to obtain a dividing line; based on the dividing line, the combined fault polygon is divided into a plurality of fault independent units by adopting a polygon clipping algorithm.
5. The method for stacking and depositing phase belt patterns by using the deposition unit level structure according to claim 1, wherein the steps of automatically determining and marking the attributes of the upper and lower plates of the fault based on the space geometrical characteristics of a plurality of fault independent units and generating fault polygon data with the marks of the upper and lower plates are as follows: Extracting a main walking direction of the combined fault polygon, wherein the main walking direction represents the direction with highest occurrence frequency in the directions of all line segments of the combined fault polygon; calculating a normal vector of the fault tendency direction according to the main walking direction; And judging the position of each fault independent unit relative to the normal vector, and acquiring fault polygon data with upper and lower disc marks by combining the fault kinematic characteristics.
6. The method for stacking and depositing the phase belt map by the deposition unit level structure according to claim 2, wherein the method for acquiring the seismic data volume with the consistent phase position based on the three-dimensional seismic data comprises the following specific steps: denoising the three-dimensional seismic data to obtain a denoised seismic data body; Performing amplitude recovery processing on the denoised seismic data body to obtain an amplitude recovered seismic data body; and carrying out minimum phase processing on the seismic data body with the recovered amplitude to obtain the seismic data body with the consistent phase.
7. The method for stacking and depositing the phase belt map by the deposition unit level structure according to claim 2, wherein the step of obtaining the well shock calibration result by using the seismic data volume with the well logging data and the phase height being consistent comprises the following specific steps: Acquiring acoustic logging curves, density logging curves and drilling layering data of a standard well based on logging data; acquiring a reflection coefficient sequence according to the acoustic logging curve, the density logging curve and the drilling layering data of the standard well; Extracting the side-of-well seismic channel data of the standard well from the seismic data volume with the consistent phase position; acquiring seismic wavelets based on the reflection coefficient sequences and the well-side seismic channel data; Convolving the reflection coefficient sequence with the seismic wavelet to generate a synthetic seismic record; And iteratively adjusting parameters of the seismic wavelets until the correlation coefficient of the synthetic seismic record and the side-well seismic channel data is greater than or equal to a preset coefficient threshold value, completing well seismic calibration and obtaining a well seismic calibration result.
8. The method for stacking and depositing the phase belt map by the deposition unit level structure according to claim 2, wherein the method for obtaining the time domain seismic interpretation result of the target layer by using the seismic data body, the well seismic calibration result, the well drilling data, the well logging data and the regional geological map with the consistent phase height comprises the following specific steps: Performing fault identification on seismic data bodies with consistent phase heights to obtain a fault identification result, wherein the fault identification result comprises the distribution position, trend and property of faults on a plane; Taking a fault identification result, a seismic data body with consistent phase height and a well earthquake calibration result as inputs, and adopting a dynamic programming tracking algorithm to acquire horizon tracking continuity parameters of each reflecting layer in a target layer and space cutting relation data of faults and horizons; based on horizon tracking continuity parameters of each reflecting layer in the target layer and space cutting relation data of faults and horizons, a construction analysis method is adopted to obtain the form and the scale of each reflecting layer in the target layer; Forming horizon structure surface data and a fault interpretation set based on the form and scale of each reflecting layer in the target layer and the space cutting relation data of faults and horizons, and determining the formed horizon structure surface data and fault interpretation set as a seismic interpretation result of the target layer; Based on the seismic interpretation result, drilling data, logging data and regional geological map of the target layer, verifying the accuracy of the seismic interpretation result of the target layer by adopting a well-focal depth-degree error analysis method and a geological constraint verification method to obtain a verification result; And taking the seismic interpretation result of the verified target layer as the time domain seismic interpretation result of the target layer.
9. The method for stacking and depositing the phase belt map by the deposition unit level structure according to claim 2, wherein the method for constructing the three-dimensional space distribution model of the deposition unit level structure based on the time domain seismic interpretation result, the drilling data and the logging data of the target layer comprises the following specific steps: based on horizon construction surface data in a time domain seismic interpretation result of a target layer, adopting geological modeling software to establish a three-dimensional layer constraint air speed volume; Converting the time domain seismic interpretation result of the target layer into a seismic interpretation result of the depth domain by using the three-dimensional layer constraint space velocity body; Determining accurate positions and forms of faults in a three-dimensional space by adopting geological modeling software based on fault information in seismic interpretation results of breakpoint data and depth domains in drilling data; Determining the accurate position and form of each deposition unit by adopting geological modeling software based on layering data in drilling data, logging data and horizon information in a seismic interpretation result of a depth domain; performing interpolation processing on the well drilling data and the seismic interpretation result of the depth domain to obtain well drilling data and seismic data after interpolation; based on the interpolated drilling data and seismic data, the accurate position and form of faults in the three-dimensional space and the accurate position and form of each deposition unit, adopting geological modeling software to construct a three-dimensional space distribution model of the deposition unit level structure.
10. A deposition cell level structure superimposed deposition phase diagram apparatus, comprising the following cells: the system comprises a data acquisition unit, a data processing unit and a data processing unit, wherein the data acquisition unit is used for acquiring multi-source information data of a target oil field, and the multi-source information data comprise three-dimensional seismic data, drilling data, logging data and regional geological map of the target oil field; The layer acquisition unit is used for constructing a three-dimensional space distribution model of the deposition unit level structure based on the multi-source information data; based on a three-dimensional space distribution model constructed by a deposition unit level, contour line data and fault polygon data are obtained; Automatically smoothing the contour line data to obtain smoothed contour line data; Automatically correcting the fault polygon data to obtain corrected fault polygon data; Splitting the combined fault polygon in the corrected fault polygon data into a plurality of fault independent units; Automatically judging and marking attributes of the upper disc and the lower disc of the faults based on space geometric features of a plurality of fault independent units, and generating fault polygon data with the marks of the upper disc and the lower disc; acquiring a deposition unit level structure diagram of the target layer based on fault polygon data with upper and lower disc marks and the smoothed contour line data; acquiring a deposition phase diagram of a target layer; and the superposition unit is used for superposing the deposition unit level structure diagram and the deposition phase band diagram of the target layer as different layers to obtain a plane structure diagram of the target layer.

Description

Method and device for overlapping deposition phase belt diagram of deposition unit level structure Technical Field The invention relates to the technical field of image synthesis, in particular to a method and a device for depositing a unit-level structure superposition deposition phase belt graph. Background The sedimentary facies map is an image which is based on factors such as lithology characteristics, sedimentary structures, paleogeographic environments and the like of sedimentary rocks, different sedimentary facies types are divided, and the distribution range of the sedimentary facies is drawn on a geological map, and the sedimentary unit level structure map is a structure distribution image which is drawn by taking sedimentary units as a basis and combining regional structure characteristics, is mainly used for describing the distribution, the morphology and the interrelationship of the structure units in a sedimentary basin or a hydrocarbon reservoir and the sedimentary units, combines the related contents of the structure geology and the sedimentary science, and can provide important geological basis for oil and gas exploration and development. The current three-dimensional structure modeling software can integrate multi-source data such as earthquake, well drilling and well logging data, construct a high-precision three-dimensional geological model, simulate geometrical forms of underground structures such as faults, folds, lithology distribution and other geological features, provide an intuitive three-dimensional visual interface, help geologist and engineers analyze the geological structures and predict the oil and gas reservoir distribution. However, three-dimensional visualization software cannot be applied to a development site, meanwhile, the operation level of field personnel is limited, and more two-dimensional plan views are used in the actual site. The method is characterized in that data are exported from three-dimensional geological modeling software and loaded into a two-dimensional plan, a deposition unit level structure diagram can only display the position and the distribution shape of faults, fault upper and lower disc information cannot be automatically displayed, so that the workload of identifying and describing faults upper and lower discs is large, time consumption is long, meanwhile, a deposition phase band diagram and a structure diagram are displayed on different base diagrams, processing is relatively complex, the two diagrams are difficult to be overlapped together for analysis and application, the requirement of rapidly drawing the two-dimensional plan with fault upper and lower discs and deposition phase distribution by development site personnel cannot be met, and the site development efficiency is influenced. Disclosure of Invention The invention provides a method and a device for overlapping and depositing a phase belt graph by a deposition unit level structure, which are used for solving the existing problems. The invention relates to a method and a device for a deposition unit level structure superposition deposition phase belt diagram, which adopts the following technical scheme: One embodiment of the invention provides a method for depositing a stacked deposition phase diagram of a unit-level structure, comprising the steps of: The method comprises the steps of obtaining multi-source information data of a target oil field, wherein the multi-source information data comprise three-dimensional seismic data, drilling data, logging data and regional geological map of the target oil field; constructing a three-dimensional space distribution model of a deposition unit level structure based on multi-source information data; based on a three-dimensional space distribution model constructed by a deposition unit level, contour line data and fault polygon data are obtained; Automatically smoothing the contour line data to obtain smoothed contour line data; Automatically correcting the fault polygon data to obtain corrected fault polygon data; Splitting the combined fault polygon in the corrected fault polygon data into a plurality of fault independent units; Automatically judging and marking attributes of the upper disc and the lower disc of the faults based on space geometric features of a plurality of fault independent units, and generating fault polygon data with the marks of the upper disc and the lower disc; acquiring a deposition unit level structure diagram of the target layer based on fault polygon data with upper and lower disc marks and the smoothed contour line data; acquiring a deposition phase diagram of a target layer; and superposing the deposition unit level structure diagram and the deposition phase band diagram of the target layer as different layers to obtain a plane structure diagram of the target layer. Further, the method for constructing the three-dimensional space distribution model of the deposition unit level structure based on the multi-source