ROBUST AND FIT-FOR-PURPOSE SAND-CONTROL TECHNOLOGY APPLICATION TO PRODUCE MARGINAL RESERVES IN PERTAMINA HULU MAHAKAM
Pertamina Hulu Mahakam (PHM) is an oil and gas exploration and production operator in Mahakam delta river. Mature fields development in Mahakam was aiming shallow unconsolidated sand-stone reservoirs with high sand-risk character. The proportion of shallow wells development is tending to increase...
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| Format: | Theses |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/70201 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Pertamina Hulu Mahakam (PHM) is an oil and gas exploration and production operator in
Mahakam delta river. Mature fields development in Mahakam was aiming shallow
unconsolidated sand-stone reservoirs with high sand-risk character. The proportion of
shallow wells development is tending to increase recently. As the result, even though it
contributes major part of company’s production, but it also has natural consequences on
the increasing trend of sand-produced volume. Sand production is not expected and become
one of the most dangerous hazard in the industry because the sand grains has abrasive
physical property. It may cause consequences of a detrimental to the short-long-term well
productivity, damage the hydrocarbon-contained surface facilities and may even cause a
serious to catastrophic safety accident. The loss of hydrocarbon containment and release
into the atmosphere might be followed by deadly disaster (fire and environment pollutions).
In order to safely produce these reservoirs type, PHM currently applies the robust dieselbased
chemical
sand-consolidation
(DB-SCON)
technology
for
considerably
high
stakes
reservoirs
and
combined
with
mechanical
sand-screens
for
the
lower
stakes
ones.
Along
the
field’s
production
period,
the
average
reserves
of
trend
of
a
shallow
reservoir
is
tending
to
decrease
and
lead
to
the
declining
trend
of
sand-control
project
economics.
The
company
forms
a
project
research
team
with
main
mission
to
find
the
robust
and
fit-for-purpose
sandcontrol
technology
application
to
produce
the
marginal
reserves.
The
project
team
conducts
the
combination
of
quantitative
and
qualitative
research
design
by
collecting
data
from
the
internal
statistic
and
technical
data
(quantitative)
and
combined
with
the
data
from
series
of
interviews
with
the
stakeholders
and
competent
personnel
in
the
company
(qualitative).
The research uses current reality tree (CRT) diagram to determine three main root causes
of economics declines trend: high DB-SCON investment cost, low-productivity and lowreliability
of
current
mechanical
sand-screen.
The
project
team
proposes
alternative
sandcontrol
technology solutions with three main criteria: reliability, productivity and
investment cost. There are four proposed alternatives technologies that fulfil these criteria
and has been analyzed that potentially can increase the sand-control project economics of
marginal reserves: the existing applied technology (DB-SCON), water-based chemical
sand-consolidation (WB-SCON), high erosion resistance sand-screen (HERSS) and sand
management (SM) technologies. The analytical hierarchy process (AHP) determines that
HERSS is chosen as the most robust and fit-for-purpose sand-control technology.
The comparison between HERSS field trials result and DB-SCON shows that HERSS is
capable to significantly reduce the investment cost by 68.0%, maintaining the reliability or
success ratio at 88.2% (DB-SCON recorded as 88.5%), compete the productivity to
produce gas production at 2.5 MMscfd, accelerates the production 14 days earlier, and
reduce the economic sand-control cut-off reserve limit from 0.1 down to 0.02 BCF. HERSS
that is made by zircon metal capable to significantly improve the mechanical sand-screen
performance. It demonstrates superior performances than ceramic-made sand-screen, by
significantly increases the reliability from 64.7% to 88.5% and can decrease the investment
cost by 30.7%. The industrialization of HERSS sand-control technology application is
planned in 2023. The shift of technology is expected can generate cost optimization with a
total of $27.4 million along the year according to company’s sand-control work programs.
The thesis research also provides the recommendations to the implementation plan which
potentially further increase the realization of the sand-control project economics.
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