MOPSU Brochure (3mb pdf)

Early Monetisation of Stranded
Strande Assets
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BACKGROUND
Offshore oil and gas field developments typically
adopt the “satellite principle", where existing
pipeline network and production facilities in the
vicinity are used to minimize CAPEX
The remaining unexploited fields are often
located in remote locations with little or no
infrastructure and of a size or nature that often
makes it impossible to predict with certainty the
amount or composition of recoverable hydrocarbons in place
These fields are often referred to as small,
marginal, unconventional reservoirs or stranded
assets. It is widely acknowledged that economics of exploiting stranded assets are easily
affected by changes in basic economic parameters such as capital expenditure, time to first oil,
operating costs, production levels, recoverable
reserves and even abandonment costs which
can have a major effect on the profitability of the
venture
If a field is marginal because of the uncertainty
over the level of reserves, a period of
pre-production often referred to as extended
well testing will give additional reservoir
information and will reduce uncertainty thereby
leading to improved decision making
Field owners or operators should be able to
exploit these so called stranded assets in an
incremental, optimal and cost effective manner
There is therefore a need for a solution that offers
the following:• Minimum CAPEX for the field owner or
operator
• First oil or gas in weeks to optimise cash
flow – Improving IRR
• Extended Well Testing (EWT) to determine reservoir profile
• Minimum risk & development costs
from optimal data evaluation
• Operate in water depths of up to 120
metres
• Fit-for-purpose to produce small hydrocarbon reserves
• Operate with crude oil production
rates as low as 2,500 bpd
• Economically viable where recoverable
reserves are as low as 5 million barrels
• Flexible to cater for uncertainties
surrounding remote field developments
MOBILE OFFSHORE PRODUCTION AND STORAGE UNIT
(MOPSU™)
The International patent pending MOPSU™ offers field owners and
operators solutions for all of the above and more. Unlike other systems
that rely on drilling rigs, separate wellhead platforms, pipelines or an
FSO, the MOPSU™ uses an optional modular drilling rig, integral storage
and a MOPSU™ installed detachable wellhead platform with the entire
system (with the exception of the wellhead platform) fully recoverable
and reusable
This technology, a ‘game changer’, will provide oil and gas industry
complete solutions and set new paradigms in the development of
offshore oil and gas fields using cost effective systems and facilities. The
“Design One, Build Multiple” concept provides significant benefits on
delivery times and costs
The MOPSU™ paves the way for future hydrocarbon extraction in
remote green fields and to assist in enhanced hydrocarbon recovery
from existing brown fields
UNIQUE ADVANTAGES OF THE MOPSUTM
Early Production System (EPS)
Produce As You Explore - During the exploration phase, a Drill Stem Test
(DST) string can be deployed and the well completed with a subsurface
valve used to flow in or shut the well. Pressure gauges will be installed
down hole to measure changes and typically, instead of using a
production tree, DST well control equipment will be utilised
Drilling and well appraisal, including extended well testing can be
performed with this configuration and production during this period
can be stored and offloaded to shuttle tankers. Based on the results
from the testing, recoverable reserves can be computed and full scale
development strategy can be formulated. This will then determine the
number of wells to be drilled and optimal process facilities required,
making it a fit-for-purpose solution. If results of the appraisal and
testing do not warrant a production facility at the site, the DST string
can be retrieved and the MOPSU™, including the drilling template, can
be redeployed to another suitable site
MOPSUTM a driver for incremental field
development
Conventional design &
thinking won’t work
Development often only
possible through early
monetisation of reserves and
pushing the technology
envelope
The size and location require
additional up-front anaysis to
determine optimal design
Overdesign kills economics
Minimum Capital
Using Reusable Integrated Unit capable of
drilling, production, evaluation, storage &
offloading in remote locations
Minimum Risk
Produce As You Explore. First Oil in weeks with
minimal production facility
Extended Well Testing
Optimal design for production from
extended evaluation & interpretation
Fit-for-Purpose
Operators of small fields can now produce with minimum
capital, minimum risk and optimal facilities
Minimum CAPEX and OPEX
Flexible
Typically, conventional wellhead platforms are
constructed based on assumptions on the likely
outcomes of ultimate hydrocarbon recovery.
This method has often resulted in over design
and sub-optimised platforms resulting in
unnecessary capital expenditure for the field
owner/operator
If the field is found to produce above initial expectations or if other
hydrocarbon deposits are found to be present in close proximity, then
the wellhead platform which is an integral part of the MOPSU™ can be
detached easily from the MOPSU™ and independently hooked-up to
central processing facilities or pipeline network as the field evolves in
size
Considerable savings can be achieved by
deploying the MOPSU™ instead of installing a
conventional wellhead platform for operation
in conjunction with a MOPU and an FSO. Immediate CAPEX savings can be realised as heavy lift
vessels or jack-up rigs are not required for the
installation of the MOPSU™ and the MOPSU™
site-installed Detachable Wellhead Platform
(MDWHPTM)
EXPECTED
RECOVERABLE RESERVES (RR)
& FLOW RATES LOW
Meets Basic Development Viability Criteria
MOPSUTM + MDWHPTM
As
expected
The integral crude and condensate storage and
offloading facilities eliminate the need to install
pipelines or deploy an FSO. Savings can also be
achieved in OPEX since there are no pipelines or
FSO to operate and maintain and less coordination as all the facilities are being accommodated on a single platform. At the end of field
life, huge savings can be recognised since abandonment of the production and storage facility
involves only jacking and mooring operations
RR Higher
•
Facilitates extended well testing and early
production
•
Fully assembled at fabrication yard / quayside
and wet-towed to offshore site
•
Re-locatable, making incremental field
development or re-use attractive, with negligible
environmental impact
Integral production storage provided in the
foundation mat
Drilling can be done with modular drilling
rig, tender assisted rig or jack-up
Modular drilling rig is suitable for both exploration
and production
•
•
RR or
FLOW RATE
Flow Rate
Higher
Add FSO
RR & Flow Rate Higher
Phase 1
Add FSO
Drop in
FLOW RATE
Upgrade MDWHPTM to Full
Facilities
For low production rates the MOPSUTM can be
used independently. For higher production
rates, especially in the initial years, it can be
used in conjunction with an FSO which will be
demobilised when production declines
SIGNIFICANT BENEFITS
• Immediate CAPEX savings on wellhead platform
and pipeline/FSO
• Self-installing – No requirement for Heavy Lift
Vessels for the installation of substructure and
topsides
RELOCATE MOPSU
Higher
Scalable
•
Lower
RECOVERABLE
VOLUME
DEPLETE RESERVOIR
Phase 2
Install Pipelines to CPP
in Vicinty
RELOCATE
MOPSUTM
RELOCATE
FSO
•
Self-supporting detachable wellhead platform for
attachment to conventional platforms or to
pipeline network if further development is envisaged
• Fixed installation which floats only during mobilisation and demobilisation, therefore no requirement
for marine classification
• Packaged equipment philosophy to develop
topsides facilities, allowing flexibility to
change processes
• Removable strand jack system is used to lower the mat
and to elevate the deck, eliminating the need for
permanent jack-houses, which require periodical
maintenance
• Platform-deployed mooring hawser and crude
transfer system for offloading to shuttle tankers; no
subsea offloading connections
MOPSUTM MK1 Specifications
STABILITY / FOUNDATION CAPACITY
METOCEAN
Water Depth (max.)
80m MSL
Tides
HAT = MSL +1.7m
LAT = MSL -1.4m
Storm surge
+0.6m, -0.3m
Air gap
11.0 m
WAVES, WIND &
CURRENT
Max. Wave Height,
Hmax (m)
Assoc. Wave Period,
Tass (sec)
Significant Wave
Height, Hs (m)
Mat bearing capacity
1 year return (operating)
100 yr return (extreme storm)
Cyclone conditions
Operating
Extreme
storm
Cyclone
8.7
13.0
11.5
9.3
11.4
10.7
2359 psf
2752 psf
2517 psf
Factor of Safety - Overturning
1 year return (operating)
100 yr return (extreme storm)
Cyclone conditions
> 1.30 (ABS req.)
3.68
2.72
1.82
Factor of Safety - Sliding
16.05
DRILLING / WORKOVER
4.7
7.0
6.6
Period, Ts (sec)
7.9
9.6
9.9
Peak Period (sec)
9.2
11.2
10.5
Zero Crossing Period
(sec)
6.5
8.0
8.2
Wind Speed (m/s)
17
23
30
Current Speed (m/s)
Surface
Mid-depth
Seabed
0.7
0.5
0.3
0.8
0.6
0.3
1.0
0.7
0.3
FACILITIES
Supports self-contained, tender assisted & jack-up rigs
Self-contained modular rig
Working load / push / pull
Pipe handling
Operating singles
Top drive torque / speed
Pumping capacity
BOP
Norsok and UK regulations
350 - 400 sT hook
2.5” – 20”
Up to range 3 (45ft)
42 - 85 kNm / 150 - 190 rpm
4200 l/min
13 5/8”, 5000 - 10,000 psi
LEGS
Number of legs
4, circular
Internals
Piping, insulation, access
Function
EWT / EPS / Optimal Production
Topsides payload
2500 MT
ACCOMMODATION / ACCESS
Hull dimension
40m x 40m x 6m (nominal)
Living Quarters
Deck area
1800 sq m
Facilities
Hull tanks capacity
Processing
1435 cu. m for fuel oil, drilling mud,
brine, chemicals, lube, seawater &
potable water
12,000 bpd (standard)
45,000 bpd (enhanced)
Crude storage
90,000 - 200,000 barrels
Crude offloading
100,000 – 200,000 barrels per day,
via floating hoses & mooring hawser
deployed from hull
Cranes
2 nos. - 30 MT and 50 MT
Power
2 x 1.3 MW
20-man (standard)
40-man (enhanced)
Radio room, offices, galley,
dining, hospital, laundry
Sikorsky S-76 (standard)
Sikorsky S-92 (enhanced)
Helideck
Boatlanding
3-levels
JACKING SYSTEM
Drilling Unit
Rack & pinion
Production Unit
Strand jacking
®
AMERICAS DIVISION
APPROVAL IN PRINCIPLE