Geology Reference
In-Depth Information
different genetic type, close to the outlines of the present-day hydrocarbon
accumulations.
The aforementioned is supported by Table 2.6. The Table includes the
data on hard water appearances over the indicated portions in the Lower
Series of the Middle Pliocene in the Apsheron oil and gas area, which usu-
ally carry within their uplifted portions mostly alkaline waters:
t
In all section intervals, the ground water salinity increase is
always accompanied by the second salinity factors growth in
the hard water medium and by the primary alkalinity fac-
tors decline in the alkaline medium. Conversely, a salinity
decrease is accompanied by the corresponding increase in
the primary alkalinity and decline of the secondary salinity.
t
Clear trend of increased salinity and the corresponding
modification of the Palmer's parameters is observed at all
prospects/fields in the region going from the crests toward
subsided areas of the structures.
Table 2.6
Areas and stratigraphic intervals of hard water occurrence within the
alkaline environment in the lower Middle Pliocene (Apsheron oil and gas area,
Mekhtiyev, Rachinsky, 1967).
Formation
Fields, prospects
NKG
(Post-Kirmaki-clay)
Buzovny, Kala, Bibieybat
NKP
(Post-Kirmaki-sand)
Neftyanye Kamni, Artem Island, Gyurgyany-More,
Karadagh, Bibieybat
KS (Kirmaki Fm.)
Binagady (north flank), Surakhany, Karachukhur,
Artem Island, Gyurgyany-More, Darwin Bank,
Kala, Zyrya, Bibieybat, Khorasany
PK (Productive
Sequence)
Surakhany, Karachukhur, Artem Island (north
structure), Buzovny (north area), Bibieybat,
Neftyanye Kamni
KaS (Kala Fm.)
Surakhany, Karachukhur, Gousany, Peschany
Island, Yuzhnaya, Neftyanye Kamni, Gryazevaya
Sopka, Baku Low, Bina
