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FORM 10-K IMPERIAL OIL LIMITED

FORM 10-K IMPERIAL OIL LIMITED

FORM 10-K IMPERIAL OIL LIMITED

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etaining its 70 percent interest in the other exploration licence for about 113,000 gross hectares<br />

(279,000 gross acres). In early 2001, the Company acquired about a 17 percent interest in three additional<br />

deep water exploration licences for about 475,000 gross hectares (1,174,000 gross acres). In 2004, these<br />

licences were allowed to expire. The Company is not planning further exploration in these areas.<br />

In early 2004, the Company acquired a 25 percent interest in eight deep water exploration licences<br />

offshore Newfoundland in the Orphan Basin for about 2,125,000 gross hectares (5,251,000 gross acres).<br />

In February of 2005, the Company reduced its interest to 15% through an agreement with another<br />

company. The Company’s share of proposed exploration spending is about $<strong>10</strong>0 million with a minimum<br />

commitment of about $25 million. In 2004, the Company participated in a 3-D seismic survey in this area.<br />

In 2004, the Company converted nine exploration permits in the Laurentian basin area offshore<br />

Newfoundland and Labrador to a single exploration licence for about 192,000 gross hectares<br />

(474,000 gross acres). The Company holds a <strong>10</strong>0 percent interest in this licence.<br />

Petroleum Products<br />

Supply<br />

To supply the requirements of its own refineries and condensate requirements for blending with<br />

crude bitumen, the Company supplements its own production with substantial purchases from others.<br />

The Company purchases domestic crude oil at freely negotiated prices from a number of sources.<br />

Domestic purchases of crude oil are generally made under 30-day contracts. There are no domestic<br />

purchases of crude oil under contracts longer than 60 days.<br />

Crude oil from foreign sources is purchased by the Company at competitive prices mainly through Exxon<br />

Mobil Corporation (which has beneficial access to major market sources of crude oil throughout the world).<br />

Refining<br />

The Company owns and operates four refineries. Two of these, the Sarnia refinery and the Strathcona<br />

refinery, have lubricating oil production facilities. The Strathcona refinery processes Canadian crude oil, and<br />

the Dartmouth, Sarnia and Nanticoke refineries process a combination of Canadian and foreign crude oil. In<br />

addition to crude oil, the Company purchases finished products to supplement its refinery production.<br />

In 2004, capital expenditures of about $159 million were made at the Company’s refineries. About<br />

60 percent of those expenditures were on new facilities required to meet Government of Canada regulations<br />

on the sulphur level in motor fuels with the remaining expenditures being on safety and efficiency<br />

improvements, and environmental control projects.<br />

The approximate average daily volumes of refinery throughput during the five years ended December 31,<br />

2004, and the daily rated capacities of the refineries at December 31, 1999 and 2004, were as follows:<br />

Average Daily Volumes of<br />

Daily Rated<br />

Refinery Throughput (1)<br />

Capacities at<br />

Year Ended December 31 December 31 (2)<br />

2004 2003 2002 2001 2000 2004 1999<br />

(thousands of cubic metres)<br />

Strathcona, Alberta.................................... 27.1 27.6 26.0 25.4 27.0 29.8 28.6<br />

Sarnia, Ontario.......................................... 17.2 14.7 16.5 16.5 16.2 19.2 19.2<br />

Dartmouth, Nova Scotia.............................. 12.7 13.0 12.5 12.3 11.2 13.1 13.1<br />

Nanticoke, Ontario .................................... 17.3 16.3 16.2 17.2 17.2 17.8 17.8<br />

Total............................................... 74.3 71.6 71.2 71.4 71.6 79.9 78.7<br />

Average Daily Volumes of<br />

Daily Rated<br />

Refinery Throughput (1)<br />

Capacities at<br />

Year Ended December 31 December 31 (2)<br />

2004 2003 2002 2001 2000 2004 1999<br />

(thousands of barrels)<br />

Strathcona, Alberta.................................... 170 174 163 160 170 187 180<br />

Sarnia, Ontario.......................................... <strong>10</strong>8 92 <strong>10</strong>4 <strong>10</strong>4 <strong>10</strong>2 121 121<br />

Dartmouth, Nova Scotia.............................. 80 82 78 77 70 82 82<br />

Nanticoke, Ontario..................................... <strong>10</strong>9 <strong>10</strong>2 <strong>10</strong>2 <strong>10</strong>8 <strong>10</strong>8 112 112<br />

Total............................................... 467 450 447 449 450 502 495<br />

(1) Refinery throughput is the volume of crude oil and feedstocks that is processed in the refinery atmospheric<br />

distillation units.<br />

(2) Rated capacities are based on definite specifications as to types of crude oil and feedstocks that are processed in<br />

the refinery atmospheric distillation units, the products to be obtained and the refinery process, adjusted to include<br />

an estimated allowance for normal maintenance shutdowns. Accordingly, actual capacities may be higher or lower<br />

than rated capacities due to changes in refinery operation and the type of crude oil available for processing.<br />

Refinery throughput was 93 percent of capacity in 2004, three percent higher than the previous year.<br />

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