A method for calculating the curvature of rivers in western Sichuan

A calculation method and river channel technology, applied in complex mathematical operations, design optimization/simulation, special data processing applications, etc., can solve the problems of small river channel curvature index, influence research and analysis, etc., and achieve the effect of reducing arbitrariness and accurate prediction

Active Publication Date: 2022-03-22
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Assuming that there are several wells distributed in the same channel, if this method is used to calculate, there is a significant difference between the calculated channel curvature index and the actual location of some wells. If the curvature is extremely large, the specific channel curvature index calculated by this method will be significantly smaller than the actual one, which will affect the subsequent research and analysis

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  • A method for calculating the curvature of rivers in western Sichuan
  • A method for calculating the curvature of rivers in western Sichuan
  • A method for calculating the curvature of rivers in western Sichuan

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Embodiment 1

[0041] see Figure 2-3 , the present invention provides a technical solution: a method for calculating the curvature of rivers in western Sichuan, specifically comprising the following steps:

[0042] S1: Based on the channel curvature and channel gradient data of the 12 wells in the western Sichuan area, the intersection chart of the channel curvature and channel gradient was compiled, and the relationship between the channel curvature and channel gradient in this area was obtained:

[0043] Ω=-0.3006*S+0.5326(R 2 =0.4122) (1)

[0044] Among them, Ω is the channel curvature index, S is the channel curvature, R 2 It is the ratio of the regression sum of squares to the total error sum of squares, reflecting the fitting degree of the regression line;

[0045] S2: According to Schumm in 1968, the relationship between channel curvature and annual average flow and sediment load index was proposed, namely:

[0046] S=60M -0.38 *Q m -0.32(2),

[0047] The relationship between...

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Abstract

The invention discloses a method for calculating the curvature of a river in western Sichuan in the technical field of calculation of river parameters, which specifically includes the following steps: based on the river curvature and slope data of 12 wells in the western Sichuan, the intersection chart of the river curvature and slope is compiled , to obtain a linear quantitative relational expression of river channel curvature and river channel slope, and then on this basis, according to a series of parameter formulas proposed at present, step by step reverse deduction (step 2‑5), to obtain the final river channel curvature, channel The quantitative relationship between the width and the depth of the channel can directly extract the relevant data from the logging data of a single well, and the inversion calculation of the relevant formula can accurately obtain the channel curvature index of the position of the single well. The present invention can reduce the number of traditional empirical methods The arbitrariness of , can predict high-quality reservoirs more accurately based on channel curvature.

Description

technical field [0001] The invention relates to the technical field of channel parameter calculation, in particular to a calculation method for channel curvature in western Sichuan. Background technique [0002] The shape of the channel is the result of a variety of natural factors and forces, including the structural composition of the channel, the ability of water erosion, the density and growth rate of channel plants, the composition and movement speed of sediment along the channel, the range of sediment accumulation, and the regional river The aggregation and decomposition rate of carryover, etc. The straightness and curvature of the river bed directly affect the river speed, and the shape of the river channel mainly includes the depth, smoothness and slope of the revetment of the river bed. Therefore, the morphology of the channel is of great significance to the physical form of the channel and the ecological structure of the channel. In order to further analyze the c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F17/18
CPCG06F30/20G06F17/18
Inventor 张小菊邓虎成伏美燕阮韵淇赵爽胡笑非
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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