Authors :
Agoha, C.C; Opara, A.I; Akiang, F.B; Onwubuariri, C.N; Okeke, O.C; Omenikolo, I.A; Okereke, C.N; Osaki, L.J
Volume/Issue :
Volume 6 - 2021, Issue 7 - July
Google Scholar :
http://bitly.ws/9nMw
Scribd :
https://bit.ly/3eMCCTL
Abstract :
In order to have a good understanding of the
rock properties of the reservoirs of ‘‘Fuja’’ Field,
offshore Niger Delta, an evaluation of the petrophysical
properties of this reservoir including total porosity,
effective porosity, permeability, volume of shale, water
saturation, hydrocarbon saturation and bulk volume of
water was carried out. Bulk density and gamma ray logs
from four different wells within the field were used with
appropriate empirical equations to estimate these rock
properties using Petrel and Ms-Excel software. Results
show that the reservoir sand thickness varies from 32m
to 208m with a field average of 110.9m, total porosity
ranges between 0.002 (0.2%) and 0.255 (25.5%) with an
average of 0.18 (18%), effective porosity ranges between
0.001 (0.1%) and 0.244 (24.4%) with an average of 0.16
(16%), permeability varies between 0.01mD and
197.18mD with an average of 28.0mD, water saturation
varies between 0.11 and 0.87 with an average of 0.36,
hydrocarbon saturation varies from 0.13 to 0.89 with an
average of 0.64, while bulk volume of water ranges
between 0.020 and 0.139 with an average of 0.053. On the
average, the porosity of the reservoir sands in this field is
good while the permeability is high. Apart from
reservoirs E, K, Q and W with high water saturation, the
other 20 reservoirs have low water saturation.
Therefore, this field has good prospect for hydrocarbon
exploration and production because of the low amount of
water saturation and consequently high amount of
hydrocarbon saturation in most of the reservoirs.
Keywords :
Petrophysical Properties, Reservoir, Empirical Equations, Porosity, Permeability, Water Saturation
In order to have a good understanding of the
rock properties of the reservoirs of ‘‘Fuja’’ Field,
offshore Niger Delta, an evaluation of the petrophysical
properties of this reservoir including total porosity,
effective porosity, permeability, volume of shale, water
saturation, hydrocarbon saturation and bulk volume of
water was carried out. Bulk density and gamma ray logs
from four different wells within the field were used with
appropriate empirical equations to estimate these rock
properties using Petrel and Ms-Excel software. Results
show that the reservoir sand thickness varies from 32m
to 208m with a field average of 110.9m, total porosity
ranges between 0.002 (0.2%) and 0.255 (25.5%) with an
average of 0.18 (18%), effective porosity ranges between
0.001 (0.1%) and 0.244 (24.4%) with an average of 0.16
(16%), permeability varies between 0.01mD and
197.18mD with an average of 28.0mD, water saturation
varies between 0.11 and 0.87 with an average of 0.36,
hydrocarbon saturation varies from 0.13 to 0.89 with an
average of 0.64, while bulk volume of water ranges
between 0.020 and 0.139 with an average of 0.053. On the
average, the porosity of the reservoir sands in this field is
good while the permeability is high. Apart from
reservoirs E, K, Q and W with high water saturation, the
other 20 reservoirs have low water saturation.
Therefore, this field has good prospect for hydrocarbon
exploration and production because of the low amount of
water saturation and consequently high amount of
hydrocarbon saturation in most of the reservoirs.
Keywords :
Petrophysical Properties, Reservoir, Empirical Equations, Porosity, Permeability, Water Saturation
