This document discusses reactivating an idle well, XXX Well, in the Dulang X oil field through additional perforation. It will study the well history and logs to show profitable reservoirs exist. Production from offset wells will be used to assess reservoir capability after perforation and predict future production rates and recoverable reserves. A perforation strategy and design will be devised. The net present value will be calculated from predicted production rates and costs to show this project will be profitable.

1. IMPORTANT NOTICE: The information provided in the brief is intended for technical briefing only.
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Abstract
Petronas Carigali is currently finding a way to increase its income by increasing its production due to loss in
profit. One of the way to increase its production is by reactivating idle wells. However, not all idle wells are
economic to reactivate. Therefore, several analysis was done to determine which well is suitable to be
reactivated. The idle well that I found was in Dulang X named XXX well. It needs additional perforation to
continue as a producing oil well. Several assessment was done:
- To prove the reservoir potential is conducive for additional perforation
- To determine exactly the location of perforation
- To prove that by reactivating the well will promise huge profit
Brief Description of the Project
XXX Well history will be studied together with the interpretation of openhole log to
show that there is a profitable reservoir in the well. Then, based on the production
performance of offset well, reservoir capability after reperforation will be assessed and
its future production rate will be predicted beside its recoverable reserves using
Decline Curve Analysis. Then perforation strategy and design is devised. Lastly, from
rate of production, revenue will be calculated together with cost to know its Net
Present Value of this project. Based on the NPV, it will show that this project will
promise huge income.
Issued by Syed Dzafeer Bin Syed Idrus
22 May 2016
Date 2 December 2015 Matric ID 18773
UTP SV Miss Nur Asyraf Binti Md Akhir Programme Petroleum Engineering
HC SV Mr Abd Aziz Bin Omar
- Syed Dzafeer Bin Syed Idrus -
Additional Perforation Potential for Well Dulang-
XXXX and Its Life Cycle Cost
1990 91 92 93 94 95 96 97 98 99 2000 01 02 03 04 05 06 07 08 09 10 11 12
0
500
1000
1500
2000
2500
CD_Liquid (bbl ) CD_Oil (bbl/d )
DULG-B014:0-SS:N3-E1
Dulang Unit Performance
1990 91 92 93 94 95 96 97 98 99 2000 01 02 03 04 05 06 07 08 09 10 11 12
0
20
40
60
80
100
0
15
30
45
60
WC (%) GOR (Mcf/bbl )
DULG-B014:0-SS:N3-E1
Dulang Unit Performance
1990 91 92 93 94 95 96 97 98 99 2000 01 02 03 04 05 06 07 08 09 10 11 12
0
60000
120000
180000
240000
300000
Cum_Oil(bbl)
Cum_Oil (bbl )DULG-B014:0-SS:N3-E1
DULG-B014:0-SS:N3-E1
Dulang Unit Performance
Figure 1: Well Performance