A Process Analytical Method for Describing the Morphological Changes of Channels Along the Provenance Direction

Abstract

The invention discloses a process analysis method for describing the morphological change of a water channel along a provenance direction. The method includes the following steps that: A, a plane section is defined according to the change of the middleline trajectory of the water channel; B, a longitudinal profile section is defined according to the change of the water valley line of the water channel; C, a special landform is identified according to the slope difference of the longitudinal profile section; D, a linear regression equation is adopted to calibrate the change of the scale of thewater channel; E, the average value of the halves of the water channel is calculated, so that the symmetry of the water channel can be characterized; and F, the Jaccard distance is utilized to characterize the degree of the morphological evolution of the water channel in different sections. With the process analysis method of the invention adopted, different types of characterization parameters can be effectively utilized to divide the water channel into different sections along the flow direction of the water channel, and the characteristics of the morphological evolution of the water channelin the different sections are analyzed. In the engineering field, data on overbank deposition and fluid migration, in the analysis results of the method can show the distribution pattern of sedimentson the two banks of the water channel and in the water channel, and therefore, the prediction of the distribution of favorable reservoirs on the two banks of the water channel and in the water channel can be facilitated.

Description

technical field [0001] The invention relates to geological resources and geological engineering, in particular to a process analysis method for describing the shape change of water channels along the source direction. Background technique [0002] Deep-water channels are important channels for transporting sediments from continental shelves to sea basins, and deep-water channels are also important places for oil and gas storage. Because channel morphology can reflect the deep-water deposition process and the movement mechanism of turbidity currents, the research on the evolution of deep-water channel morphology is very important in deep-sea energy exploration. As an important method in geophysical exploration, 3D seismic exploration technology can provide researchers with 3D morphological characteristics of deep water channels. [0003] In recent years, a large number of researchers have used 3D seismic data to measure the plane and section characterization parameters of de...

AI Technical Summary

Problems solved by technology

Although the characterization parameters can express the macroscopic morphological characteristics of the water channel, they cannot effectively reflect the morphological evolution trend and evolution scale of the water channel with the flow distance

In the field of geological resources and geological engineering, researchers only use characterization parameters to describe the shape and size of different locations of waterways. However, this traditional research method cannot efficiently use a large number of multi-type characterization parameters, that is, the use of characterization parameters is too single and seldom makes effective connections between different parameters

[0004] At present, there is no method that can reflect the evolution process of deep-water channel morphology according to the characterization parameters. The analysis of channel morphology is limited to the change of characterization parameters at different positions of the calibration channel. The analysis of the relationship between the characterization parameters is too rough, which hinders the change trend of the channel. and research analysis of the degree of change

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