An improved method for internal multiple elimination using the theory of virtual events

Bao, Pei-Nan; Shi, Ying; Wang, Weihong; Zhang, Wei; Pan, Zhejun

doi:10.1016/j.petsci.2022.05.021

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…The iterative virtual event internal multiple suppression approach extends the traditional virtual event internal multiple suppression method and avoids constructing internal multiple from every layer, which greatly improves computational efficiency [23,24] Seismic virtual events are not directly recorded in standard seismic data acquisition, but their existence can help us construct internal multiples with scattering points at the sea surface [16,17]. Therefore, the total seismic wave field data ( , , )…”

Section: Internal Multiple Elimination Using the Theory Of Virtual Ev...mentioning

confidence: 99%

Application of Iterative Virtual Events Internal Multiple Suppression Technique: A Case of Southwest Depression Area of Tarim, China

Xiao,

Xie,

Wang

et al. 2023

Applied Sciences

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The seismic records in the Cambrian southwest depression of the Tarim Basin exhibit discrepancies when compared to the actual geological setting, which is caused by the presence of multiples. Despite the application of the Radon transform, multiple interferences persist beneath the Cambrian salt in the pre-stack data, with significant variations in energy and frequency across the horizontal direction. In addition, other multiple suppression methods are also difficult to handle this problem. To address this issue, we have developed an iterative virtual event internal multiple suppression method for post-stack data. This novel algorithm extends the traditional virtual event internal multiple suppression approach, eliminating the need for data regularization and avoiding the problem of the traditional virtual events method requiring sequential extraction of primaries from relevant layers, which greatly improves computational efficiency and simplifies the implementation steps of the traditional method. Numerical experiments demonstrate the efficacy of our method in suppressing internal multiples in both synthetic and field data while preserving primary signals. When applied to real seismic data profiles, the iterative method yields structural characteristics that align more closely with sedimentary laws and reduces disparities in energy and frequency of multiples along the horizontal axis. Consequently, our method provides a robust foundation for subsequent hydrocarbon source rock prediction.

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Section: Internal Multiple Elimination Using the Theory Of Virtual Ev...mentioning

confidence: 99%

Application of Iterative Virtual Events Internal Multiple Suppression Technique: A Case of Southwest Depression Area of Tarim, China

Xiao,

Xie,

Wang

et al. 2023

Applied Sciences

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“…In the literature [22], with the goal of improving QoE for users with poor channel quality, video relay selection is modeled as a market with multiple receivers and relays, and the problem is solved based on contract theory. The literature [23] treats the elimination of multiple internal waves as an optimization problem based on virtual event theory and develops the convolution factor T. The multiple internal waves generated on all interfaces are obtained by iteratively inverting the initial multiple wave model using the convolution factor T. The predicted internal multiple waves are removed from the seismic data by subtraction. The literature [24] argues that if the economic policy dimensions increase in importance relative to the cultural dimensions, political parties will be more likely to formulate welfare policies in the manner expected by partisan theory.…”

Section: Introductionmentioning

confidence: 99%

A multidimensional interpretation of Marxist theory based on a decentralized Internet perspective

Niu

2023

Applied Mathematics and Nonlinear Sciences

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Constantly promoting theoretical innovation is the key to the perpetual vitality and vigor of Marxism. Marxist theory interpretation can provide new perspectives, new assertions, and new requirements for adhering to the basic principles of Marxism in line with the requirements of the times, national characteristics, and practical needs, and is the main basis for the formation, development, and renewal of the theoretical paradigm. Therefore, Spring+SpringMVC+Mybatis is used as the back-end development framework of the decentralized Internet to establish the decentralized Internet model used for interpreting Marxist theories. It is realized through the stages of theoretical semantic representation, multi-dimensional feature extraction, and classification. According to the multidimensional interpretation effect, the classification recall of the theoretical interpretation dimensions obtained after using the decentralized Internet model increases from 59.15%, 58.84%, 61.21%, 62.79% to 69.49%, 72.03%, 71.87%, 72.9%, and the average running speed of 9.21s decreases significantly to 3.84s. Portability, accessibility, interpretation completeness and contextual integration, depth of understanding indexes of ranking, accessibility, interpretive completeness, and contextual integration, depth of understanding, interpretive adequacy, and six-theory coverage reached 89.26%, 91.45%, 90.75%, 92.84%, 93.23%, 96.29%, and 99.12%. It shows that the decentralized Internet interpretation method of Marxist theory can grasp the scientific connotation and inner mechanism of theoretical development, trace the origin from ideas and perspectives related to the concept and summarize and interpret the background, reality, gist, content structure, and its contemporary significance under the new era discourse, so as to better implement and practice Marxist theory.

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Three-dimensional internal multiple elimination in complex structures using Marchenko autofocusing theory

Bao,

Shi,

Shang

et al. 2024

Petroleum Science

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An improved method for internal multiple elimination using the theory of virtual events

Cited by 3 publications

References 32 publications

Application of Iterative Virtual Events Internal Multiple Suppression Technique: A Case of Southwest Depression Area of Tarim, China

Application of Iterative Virtual Events Internal Multiple Suppression Technique: A Case of Southwest Depression Area of Tarim, China

A multidimensional interpretation of Marxist theory based on a decentralized Internet perspective

Three-dimensional internal multiple elimination in complex structures using Marchenko autofocusing theory

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