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May 08, 2023Open Access
Sedimentary environments are an important part of paleogeography and sedimentology, and there is a long history of using geochemical and mineralogical methods to analyze palaeoenvironmental problems using sedimentary rocks as a research vehicle. By summarizing the important results of previous work on tracing the palaeoenvironment using the composition and distribution characteristics of the macronutrients and trace elements as well as the characteristics of mineral composition, we aim to sort o...
Apr 12, 2023Open Access
Taking Yan10 member of Bai211 well area of Nanliang oilfield as the research object, the stratigraphic subdivision, sedimentary facies type and sand body distribution characteristics are analyzed by making full use of drilling and core data. The results show that Yan10 formation can be subdivided into Yan101, Yan102, Yan103 and Yan104. Braided channel, core beach and flood-plain are the main sedimentary microfacies. The extension direction of Yan10 member sand body is north to south, and the who...
Jul 27, 2015Open Access
Incised valley is an important kind of depositional system in the
Chepaizi area, west Junggar Basin. In this paper, incised valley depositional
system and its prospect direction in the area were obtained with the analysis
of seismic reflection, depositional and logging characters. The results show
that the Chepaizi uplift Jurassic developed four kinds of filling modes
including vertical aggradation, side aggradation, disorder and compound mode
and three kinds of distribution type including unita...
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