This document summarizes information about several oil and gas fields in the North Sea, including the Sparrow Field. Key details provided include the Sparrow Field's location, water depth, oil and gas reserves, discovery date, and plateau production rates. It also lists details of neighboring fields. Three development scenarios for the Sparrow Field are evaluated based on parameters like water depth, costs, safety, and ranked, with Scenario C involving a semi-submersible rig and FPSO being recommended.

1. FIELD INFORMATION:
Field Location- North Sea (80 km from East Coast of
Scotland)
Water Depth- 200 m
Proved Oil- 3.1 MMM bbls
Gas Reserves-241 bcm
Field Discovered- 2007
STOIIP- 400 MMM bbl
Reserves- 150 MMM bbls
RF- 37.5 %
Plateau Production Rate (per well)- 6000 BOPD per
well
Plateau Production Rate- 45000 BOPD (field for 8
wells)
SPARROW FIELD- NORTH SEA
Presentation by: Nya Parwon 15/LR/715/BSPE-S
• Temperature
July: Warmest Month -19 degrees Celsius
February: Coldest Month – 3.1 degrees
Celsius
• Snow and Ice
Expecting Snow layer of 250mm, Icebergs
have never been observed
 Storms:
Rare, Sea level rise during storms is 0.6
metres maximum
 Wind direction: 1500 – 3600 azimuth,
average speed of 15knots.

2. CAPTAIN FIELD
Daily Production Rate- 85000 bbl/d
Development Scenarios- FPSO
Export Strategy- Tanker
Water Depth- 106.68 m
Operator- Chevron
Location- 144.8 km North Sea of Aberdeen
Production Since- 1997
ROSS FIELD
Daily Production Rate- 0.8Mstb/d (oil) & 1.5 M
bbl/d (water)
Development Scenarios- FPSO
Export Strategy- Tanker
Water Depth- 2700m- 3200m
Operator- Talisman
Location- 64 km from Aberdeen
Production Since- 1999
NEIGHBORING
FIELDS
BEATRICE FIELD
Daily Production Rate- 58640 bbl/ d
Water Depth- 2100 m
Development Scenarios- Platform (Bridge- Linked, Alpha Drilling+ Alpha
Production)
Export Strategy- Pipeline + Tanker
Operator- Talisman
Location- 24 km from North Sea
BLAKE FIELD
Daily Production Rate- 65000 bbl/d
Development Scenarios- FPSO
Export Strategy- Pipeline + Tanker
Water Depth- 1584.96 m
Operator- Talisman Energy, Intriped NS Ltd.
& BG
Location- 64 km from North Sea
Production Since- 2001

3. DEVELOPMENT SCHEMES:
(a) Drilling:
• Jack up
• Semi- submersible
• Tension Leg Platform
(b) Production Structures:
• FPSO
• Complaint Tower
• Integrated Platforms
(c) Treatment of Effluent:
• Onshore treatment
• Offshore treatment
• Re- Injection of Gas
(Cases of Secondary
Enhancement)
(d) Export Strategy:
• Pipeline
• Pipeline+ Tanker

4. PRODUCTION SCENARIOS :
(Scenario A) Jack up + Complaint Tower + Offshore Treatment +
Tankers to Processing Plant
(Scenario B) Jack up + FPSO + Offshore Treatment + Tankers to
Processing Plant
(Scenario C) Semi- submersible + FPSO + Offshore Treatment +
Tanker to Processing Plant

5. Source: Lecture Notes- Oil and Gas Field Development, by Mwije Nelson IUEA
GUIDELINES FOR DEVELOPMENT STRATEGY RANKING

6. RANKING OF PRODUCTION SCENARIOS
PARAMETERS WEIGHT SCENARIO A
RANKING
SCENARIO B
RANKING
SCENARIO C
RANKING
Water depth 3 1 2 3
CAPEX 5 1 3 2
OPEX 4 1 2 2
Concept maturity 3 1 1 1
Experience 3 2 2 3
Flow assurance 3 2 3 2
Dismantlement 2 3 1 2
Installation 4 3 1 2
Fabrication 3 3 2 3
First oil produce 2 2 2 3
Safety/security 4 3 2 2
Local content 2 3 3 3
Environment 3 3 2 3
TOTAL 41 85 83 95

7. RANKING CUMULATIVE COMPUTATION
For Scenario A
= Scenario A Tally Score/ Weight
= 85/ 41
= 2.073
For Scenario B
= Scenario B Tally Score/ Weight
= 83/41
= 2.024
For Scenario C
Scenario C Tally Score/ Weight
= 95/ 41
=2.317

8. CONCLUSION & RECOMMENDATION
From the ranking of scenarios, the best option for use in the Sparrow Field is
Scenario C which yield a high computation than the other ranking scenarios.
Hence, for purposes of field development and production, I recommend scenario
C which consist of:
• Semi- submersible + FPSO + Offshore Treatment + Tankers to Processing
Plant