To clarify the impact of permeability and heterogeneity on oil displacement efficiency and remaining oil distribution of water flooding-chemical flooding, three groups of high and ultrahigh permeability core samples from an ultrahigh water-cut oilfield in western China were selected as the research objects in this study. High-pressure mercury injection, scanning electron microscopy, wettability test, and other methods were used to characterize the reservoir properties of core samples. Six groups of experiments were performed using the nuclear magnetic resonance (NMR) displacement imaging technology to simulate the oilfield development process considering the economic benefits, and the oil displacement efficiency and remaining oil distribution characteristics of water flooding combined with polymer flooding and polymer-surfactant flooding in reservoirs with varying physical properties were discussed. The research shows that during the simulation process of first water flooding followed by chemical flooding and then water flooding in the oilfield, the T2 spectrum signal amplitude increases the most in the two stages, one is from saturated oil flooding to 50% water cut and the other one is from 95% water cut to the end of 1 PV polymer flooding. The oil displacement efficiency increases the most, and the oil is primarily discharged from pore throats larger than 90 ms (or with pore throat radius of 8.37 µm). Higher permeability and the addition of surfactant based on the polymer are beneficial in improving final oil displacement efficiency, and the displacement efficiency is better when the polymer-surfactant binary flooding acts on the reservoir with higher permeability. The fingering phenomenon and remaining oil distribution are controlled by reservoir heterogeneity and gravity: the lower the heterogeneity, the more uniform the remaining oil distribution, and the closer the oil saturation at the experiment’s inlet and outlet. The more heterogeneous the sample, the more obvious is the fingering phenomenon, and the remaining oil is primarily distributed at the outlet end as well as at the top of the sample. The study results provide theoretical guidance for tapping the remaining oil potential of old oilfields with high to ultrahigh permeabilities.

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Esperanto movement presents a specific language and cultural phenomenon in the history of intercultural communication, which once exerted an extensive influence on modern Chinese culture. As an artificial international auxiliary language with a tinge of idealism, Esperanto has displayed complex cultural functions of translingual practices. In the 20th century, Esperanto was used in China as a medium to translate foreign literatures, mostly those from minor nationalities in central and eastern Europe, in which the contradiction between the cosmopolitism and antagonism of minor nationalities is reflected, and the inherent tension of modernity of the Chinese literature is exposed, which is worth noting for those engaged in the studies of the relations between Chinese and foreign literatures.Keywords Esperanto, translation of the literatures of minor nationalities, modernity of Chinese literature PreambleIn the study of translingual practices, from a cultural and literary standpoint, this paper will probe into the translations of Chinese and foreign literatures and claim that the study of translation cannot end in translation products, nor can it trace its way to the source language in a simple manner by ignoring totally the existence of the translated text. In order to discuss the cultural differences and similarities

Nuclear magnetic resonance (NMR) has many advantages, such as little testing time, no harm to rock specimen, and is widely used in the measurement of reservoir pore structure. 3D printing also has many advantages, such as repeating the printing the same attributes samples, forming sample by known rock pore structure, adding different pores or fractures to sample. For the study of fractured reservoir provides a new train of thought by combining NMR and 3D printing. Nuclear magnetic core analysis is an important work in the study of core, using a T 2 spectrum at a certain echo time can also be found in the core fractures. The study, by CT scans to establish reservoir pore structure, based on the basic of adding different attitude fracture forming four fracture characteristics of rock sample, using 3D printing for solid sample, through the analysis of the nuclear magnetic resonance (NMR) of these sample, get the response characteristics of fracture characteristics on the T 2 curve, the quantitative calculation of fracture porosity of rock sample, the result accord with to establish the model of fracture porosity is very good. For the study of fractured oil and gas reservoir development the new field.

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