Node network analysis method and device for cased well channel and readable storage medium
A technology of node network and analysis method, which is applied in the field of petrochemical industry, and can solve the problems that mesh division cannot meet the requirements at the same time, computer calculation is difficult, and the number of overall meshes in the model is large.
Active Publication Date: 2021-02-02
HUAZHONG UNIV OF SCI & TECH
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[0004] In the conventional simulation analysis using finite element analysis software, since the channel model is slender, that is, the axial length is in the range of several kilometers, and the precise parameters in the radial range of several millimeters need to be analyzed at the same time, the grid division cannot Satisfy requirements both axially and radially
Therefore, when the grids meet the simulation requirements in terms of axial scale and quantity, the radial resolution is not enough; after the grids meet the resolution requirements in the radial direction, the overall number of grids in the model is too large, which brings difficulties to the calculation of the computer
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[0017] Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are shown in order to provide a thorough understanding of the various described embodiments. It will be apparent, however, to one of ordinary skill in the art that various described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits and networks have not been described in detail as not to unnecessarily obscure aspects of the embodiments.
[0018] It will also be understood that, although in some instances the terms "first", "second", etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first contact could be termed a second contact, and, similarly, a second contact could be...
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The invention discloses a node network analysis method and device for a cased well channel and a readable storage medium. When the method is executed, the method comprises the following steps of: configuring a cased well channel model into a transmitting device part, a relay device part and a transmission part; configuring the transmitting device part, the transmission part and the relay device part into a plurality of blocks; simulating and analyzing the block to obtain an equivalent node network of the block; connecting a transmitting device node network, a relay device node network and a transmission node network; forming an equivalent integral network according to the transmitting device node network, the relay device node network and the transmission node network; configuring an excitation signal in the equivalent integral network, and obtaining an equivalent attenuation rule, namely an actual attenuation rule, of the excitation signal in the equivalent integral network. The casedwell channel model is equivalent to a circuit network through numerical simulation, and the attenuation law of the cased well channel model is obtained through circuit theory calculation.
Description
technical field [0001] The invention relates to the field of petrochemical industry, in particular to a node network analysis method, device and readable storage medium of a cased well channel. Background technique [0002] Downhole wireless communication is the foundation of downhole informatization. In order to build an intelligent oil field, downhole wireless communication technology has become the main research direction of domestic and foreign oil and gas giants. [0003] In order to pursue a longer underground signal propagation distance, research on relay communication technology is essential. Then, in the study of the complex channel composed of tubing, casing, and formation downhole, the attenuation law of the electromagnetic signal from the transmitter to the relay device is of great significance to the development of downhole wireless communication technology. [0004] In the conventional simulation analysis using finite element analysis software, since the chan...
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Login to View More IPC IPC(8): H04B17/391H04B17/00
CPCH04B17/0087H04B17/3912
Inventor 刘昶余沐阳周凯田若言陈庆李红斌
Owner HUAZHONG UNIV OF SCI & TECH