Parameter, unit

Property

Abbreves

Symbols	Value	Unit	Comments

1Operational environmentDeep water offshore1,000 ft sea bedding

Summary Date	16.03.2004
Production Start Date	01.06.1993
Years in Production		11	yrs
Total number

2Number of platforms3A North, A South, B3Number 5Producers SuspendedN_ps06Producers

of wells

N_t

5

4Producers ActiveN_p5


Oil Producers Total = Producing + Shut-in + P&A	N_Op	15 = 11 + 3 + 2
Gas producers Total = Producing + Shut-in + P&A	N_Gp	0
Water Producers Total = Producing + Shut-in +

P&A

N

_pa8Injectors SuspendedN_is09Injectors

_Wp

0

7Injectors ActiveN_i0


Water injectors = Injecting + Shut-in + P&A	N_Wi	8 = 7 + 1 + 0
Gas injectors = Injecting + Shut-in +

P&A

N

_ia

_Gi	0
Recovery method

1011Lifting mechanismNatural lift12

Water flooding

Drive mechanismNatural Depletion


Lifting mechanism	ESP
Current formation pressure in producers	P_e	11,000	kpa	= 0.71 · P_i

Cumulative Voidage Replacement	∑ VRR	115	%
Current Voidage Replacement	IVRR	130	%

OIL

GAS

WATER

Current RFO

RFO

28

%

= 76 % from ERFO

Current RFG

RFG

12

%

Cumulative Oil Production

Q_o

1.5

10⁶ m³

Cumulative Gas Production

Q_g

150

10⁶ m³

13Cumulative oil production∑ Q_o10MMbbl14Cumulative gas production∑ Q_g100MMscf

CumGOR = 1.1 R_s

15

Cumulative

water production

Water Production

∑

Q_w

0MMbbl16Cumulative water injection∑ Q_wi0MMbbl17Cumulative gas injection∑ Q_gi0MMscf18Current oil productionQ_oMMbbl19

Current gas production

Q_gMMscf20Current water productionQ_wMMbbl21Current water injectionQ_wiMMbbl22Current gas injectionQ_giMMscf23Current water cutY_w20%24Current Gas-to-Oil RatioGOR0.75MMscf/stb= 1.4 Rs25Current formation pressure in producersP_e1,600psi= 0.71 P_i

1.3

10⁶ m³

CumYw = 80%

Cumulative Gas Injection

Q_gi

0

10⁶ m³

Cumulative Water Injection

Q_wi

0

10⁶ m³

Current Oil Production