Нефтегазовые нанотехнологии для разработки и эксплуатации месторождений. Часть 2. Евдокимов И.Н - 26 стр.

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РГУНиГ им. Губкина | Москва

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26
Approaching a concentration-defined nanophase boundary by
blending of crude oils may be the cause of some severe compatibil-
ity problems like noticeable viscosity and density peaking (cf. Figs.
6, 7). Alternatively, blending of viscous/dense crudes with native
asphaltenes at critical concentration boundaries (e.g. ca. 8 and ca.
20 wt. %) will provide a product (containing ca. 14 wt. % asphalte-
nes) with greatly improved properties as follows from the data of
Fig. 6 and of Fig. 7.
With respect to immediate practical applications, it should be
emphasized once more that the above discussed T–C diagrams con-
tain only “the most obvious” nanophase boundaries, reflect our cur-
rent knowledge of structural transformations in petroleum and
should be subjected to further investigation.
Conclusions
At present, practical/commercial examples of “nanotechnology” are
almost exclusively from such industrial domains as electronic mi-
crochip fabrication, construction of new materials, pharmacol-
ogy/cosmetics and biomedical sciences. In petroleum industry,
“nanotechnologies” still are not considered to be important enough
for widespread practical applications, with only exception being re-
finery processes. In upstream applications, most attention is cur-
rently devoted to research in development of new nanostructured
“smart fluids” for EOR/IOR and drilling operations.
However, our research shows that now there is enough factual
evidence to consider native crude oils themselves as “association
nanofluids”. Hence, we suggest that conventional/emerging tech-
nologies for reservoir engineering should become “nanotechnolo-
gies” in a sense that they should be optimized/designed with an ac-
count for (still underinvestigated) complex phase diagrams of in-
trinsic petroleum nanocolloids, primarily those formed by asphal-
tenes.
At the least, this would help to preserve a delicate inner struc-
ture of native crudes (the approach which may be regarded as “pe-
troleum nanoecology”).

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