没办法，中有英文的
The Ahwaz Field is located in SW Iran (Fig. 1). It
contains a STOIIP of 57.3 BBO, of which 37%, or 21
BBO and 24 TCFG (associated), are estimated as
recoverable. The Oligocene-Miocene Asmari
Formation holds 62% of the oil reserves, with the
remainder in the Middle-Upper Cretaceous
Bangestan Group (Ilam and Sarvak formations) that
is the focus of this report. Undeveloped gas occurs
in Lower Cretaceous fractured limestones. The field
was discovered in 1958 and Asmari production
started in 1960, with the Bangestan reservoirs
added in 1971. The field had produced 7.65 BBO
by 1996 (94% from the Asmari). The Ahwaz
structure is a narrow, steeply dipping anticline (70
x 5 km) with four-way dip closure. The Asmari
reservoir contains light, medium-sulphur oil with a
gas cap. The Sarvak and Ilam reservoirs contain
separate accumulations of medium-gravity, highsulphur
oil. The Asmari reservoir comprises
intercalated deltaic sandstones and shallow-marine
limestones. Primary intergranular porosity in the
medium- to coarse-grained calcareous sandstones
is high (average 24%) and permeabilities excellent
(average 3500 mD). The Asmari limestones are
mud-rich pack/wackestones with moderate
porosities (average 12%) mainly generated by postburial
dolomitisation. Matrix permeabilities are low
and fractures are scarce. The Asmari reservoir
sandstones yield high offtake rates supported by
strong aquifer drive. Gas injection in the Asmari
was initiated in 1989 to boost production, which had
reached 847,000 BOPD by 1992. The Bangestan
limestones were deposited as lenses on a lime
mud-dominated carbonate shelf and have poor
reservoir quality (average porosities 3-14%).
