CNOOC Limited - Exploration Progress Made in Bohai

HONG KONG, Oct. 23, 2013 /CNW/ - CNOOC Limited (the "Company", NYSE: CEO, 
SEHK: 00883, TSX: CNU) announced the Company recently made a mid-sized new 
exploration discovery Luda 5-2 North and successfully appraised the mid-sized 
oil and gas structure Kenli 9-5/9-6. 
Luda 5-2 North is located in the Liaodong Bay of Bohai, with average water 
depth of 31 meters. The discovery wells of Luda 5-2N-2 and LD 5-2N-4 were both 
drilled and completed at a depth of around 1,140 meters and encountered the 
oil pay zones with total thickness of about 120 meters and 85 meters, 
respectively. The oil production of Luda 5-2N-2 well was tested at around 
1,040 barrels per day. The new discovery of Luda 5-2 North demonstrates the 
Company's successful experience in the thermal recovery technology of heavy 
oil, and creates a new methodology to commercialize heavy oil reserves. 
Kenli 9-5/9-6 is located in the Laixi structure in the southern part of Bohai, 
with an average water depth of about 9 meters. The Company drilled Kenli 
9-5-2D and Kenli 9-6-2 wells and completed at a depth of 2,200 meters and 
1,250 meters, respectively. These two wells encountered oil pay zones with 
total thickness of about 70 meters and 120 meters, respectively. During the 
test period, the oil production of Kenli 9-6-2 well was around 200 barrels per 
day. The successful appraisal of Kenli 9-5/9-6 has further expanded the scale 
of the reserve in the area. 
Notes to Editors: 
More information about the Company is available at 
This press release includes "forward-looking statements" within the meaning of 
the United States Private Securities Litigation Reform Act of 1995, including 
statements regarding expected future events, business prospectus or financial 
results. The words "expect", "anticipate", "continue", "estimate", 
"objective", "ongoing", "may", "will", "project", "should", "believe", 
"plans", "intends" and similar expressions are intended to identify such 
forward-looking statements. These statements are based on assumptions and 
analysis made by the Company in light of its experience and perception of 
historical trends, current conditions and expected future developments, as 
well as other factors that the Company believes reasonable under the 
circumstances. However, whether actual results and developments will meet the 
Company's expectations and predictions depends on a number of risks and 
uncertainties which could cause the actual results, performance and financial 
conditions to differ materially from the Company's expectations, including 
those associated with fluctuations in crude oil and natural gas prices, the 
exploration or development activities, the capital expenditure requirements, 
the business strategy, whether the transactions entered into by the Company 
can complete on schedule pursuant to its timetable or at all, the highly 
competitive nature of the oil and natural gas industries, the foreign 
operations, environmental liabilities and compliance requirements, and 
economic and political conditions in the People's Republic of China. For a 
description of these and other risks and uncertainties, please see the 
documents the Company has filed from time to time with the United States 
Securities and Exchange Commission, including 2012 Annual Report on Form 20-F 
filed on April 24, 2013. 
Consequently, all of the forward-looking statements made in this press release 
are qualified by these cautionary statements. The Company cannot assure that 
the results or developments anticipated will be realized or, even if 
substantially realized, that they will have the expected effect on the 
Company, its business or operations. 

Ms. Michelle Zhang Deputy Manager, Media / Public Relations CNOOC Limited Tel: 
+86-10-8452-6642 Fax: +86-10-8452-1441 
Ms. Angela Hui Ketchum Newscan Public Relations Ltd Tel: +852-3141-8091 Fax: 
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CO: Nexen Inc.
-0- Oct/23/2013 09:00 GMT
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