THE 3
rd
INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
63
SELECTION OF THE WATER SHUT-OFF OPERATION FOR A
WELL IN BAHAR GAS FIELD
Kanan Mammadov
Baku Higher Oil School
Baku, Azerbaijan
kananmammadov19@gmail.com
Supervisor: Javid Shiriyev
Key Words:
water shut-off,
multilayered reservoir, zonal isolation, swellable packers
Excess water production is known to be a
problem of paramount impor-
tance while producing hydrocarbons in terms of economical, environmental
and technical factors, ultimately reducing the net monetary gain from the
given well. The problem becomes more serious in case of the multilayered
reservoirs due to the fact that not all the intervals may require a treatment at
the given time.
In general, there is a wide range of water shut-off
applications in the
industry which have been given below:
In this research, a case study has been conducted in order to select the
best water shut-off treatment for a given well in the Bahar gas field.
Well Information
The well is a gas producing well drilled and completed during Soviets in
the Bahar gas field (in 1985). During that time, the well was closed because
of the higher economic limit. However, currently
it is economical for the
company (Bahar Energy and Operating Company) to produce from the once
abandoned intervals. The main issue is that, there are multiple open zones
in the given well, and some of them produce water inhibiting gas production
from other zones.
The figure 1 illustrates the problematic zone in the well. It has been
divided into 2 zones which are zone 1 and zone 2. There are 2 cases that
challenge the water shut-off treatment. First of all, the water producing zone
(zone 1) to be treated is located above the gas producing zone. Apart from
Excess Water Control
Mechanicsms
Deep Inside
Reservoir
Polymer
and
polymer
gel
injection
Near-wellbore
Polymer
and
polymer gel
injection
Cement
Squeeze
Sidetracking
Inside wellbore
Production
Packers
Bridge/C
ement
Plugs
Casing
Patches
Bisn
Plug
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