Drilling equipment not only needs to meet requirements for desired drilling trajectory, but also needs to work reliably in more complex stratum and harsher operating conditions, which presents significant challenges on the drilling technology (John et al. 2000; Kaiser and Yu 2015; Ikonnikova et al. 2015).
Carbon isotope data (δ13C) can provide an essential means for refining paleogeographic and paleo-oceanographic reconstructions, and interpreting stratigraphic architecture within complex carbonate strata.
Several of these ancient societies the kingdoms of Mali and Ghana and the royal dynasties of Kemet (Ancient Egypt), for example—had evolved complex social strata that included persons of accomplished learning.
In 1879 Lapworth proposed that a complex series of strata (considered to be Lower Silurian by Sir Roderick I. Murchison and to be Upper Cambrian by Adam Sedgwick) was in fact a separate system.
Each barrier or shoreline complex overlies Miocene strata.
The results demonstrate that a process-response approach is effective in time-stratigraphic analysis of complex fluvial-lacustrine strata in a highly-partitioned rift basin.
A more complex approach to stratum definition which takes probability and public health consequence into account to monitor foreign substance levels in imported food of animal origin was described by Breidenbach et al. (2004).
The reservoir types of the giant oil and gas fields in the PLP marine carbonate strata are complex and diverse.
However, since the lithology of actual rock strata is complex, the length of IP relaxation process changes greatly.
This evaluation system does not require the shear wave time difference; thus, the increase in error caused by the unreliability of the shear wave time difference can be avoided when assessing strata with complex geological structures.
