Bibliometric Analysis on Numerical Lithofacies Identification for Reservoir Characterization in the Period of 1980 -2021

Abstract

The term "electrofacies" was introduced in 1980 by Serra and Abbott, it had been developed promptly since 2009. The development was triggered predominantly by wireline logging technology and artificial intelligence technology. The electrofacies categorization was intended to facilitate the study of reservoir characterization. However, it is difficult to formulate deterministically, due to the uniqueness of the depositional environment and geological processes that involve many physical properties. At least, there are 369 articles which were obtained from Scopus sources in the period of 1980 - 2021. In this bibliometric analysis, we regrouped the articles into four groups, i.e. “pattern recognition” “facies analysis”, “objectives” and “quality”. This grouping was attained on the methods of co-occurences, co-authorship, citation analysis and bibliographic coupling using VOSviewer software. The distance and coupling between themes will determine the level of quality and quantity of discussion between them. The quality of the objective resides in the certainty value of the lithology controlled by transportation or diagenetic events. For example, sand and shale which are siliciclastic lithology will have a higher degree of certainty than carbonate rocks. Therefore, the wide gap occurred during the application of artificial intelligence, especially for complex facies and uncertain geological conditions. The application of artificial intelligence is not solely functional without involving geological analysis. The implication is some researchs are still needed from this point of view, so the electrofacies role cannot be independent without developing models of the diagenetic process.

Research trends in brain imaging of mild cognitive impairment in 25 years: a bibliometric analysis

“…In the end, bibliometric analysis enables the achievement of our research objectives, namely the mapping of scientific structures, patterns and developments in research trends related to MCI themes and brain imaging. (13)…”

“…Bibliographic coupling helps provide a consistent picture, as well as differences in research from different countries over different timescales. (13,14) Using 5 as the minimal number of articles from a country, we found 34 countries that are divided into six clusters. A visualization of the country distribution analysis based on the year of publication regarding MCI and brain imaging is shown in Figure 3.…”