EXHIBIT 99.1
Estimated Ranges
(See text for additional information)
				1Q 2009			Full Year 2009
Daily Production
	Natural Gas (MMcfd)
			United States	1,152	-	1,202	1,115	-	1,180
			Canada	210	-	220	205	-	235
			Trinidad	218	-	258	230	-	260
			Other International	12	-	17	11	-	15
			Total	1,592	-	1,697	1,561	-	1,690
	Crude Oil and Condensate (MBbld)
			United States	33.9	-	36.3	40.0	-	46.0
			Canada	2.5	-	3.5	3.5	-	4.5
			Trinidad	2.6	-	3.2	2.5	-	3.5
			Total	39.0	-	43.0	46.0	-	54.0
	Natural Gas Liquids (MBbld)
			United States	15.0	-	19.0	18.0	-	20.0
			Canada	0.8	-	1.0	0.8	-	1.0
			Total	15.8	-	20.0	18.8	-	21.0
	Natural Gas Equivalent Volumes (MMcfed)
			United States	1,445	-	1,534	1,463	-	1,576
			Canada	230	-	247	231	-	268
			Trinidad	234	-	277	245	-	281
			Other International	12	-	17	11	-	15
			Total	1,921	-	2,075	1,950	-	2,140
Operating Costs
	Unit Costs ($/Mcfe)
			Lease and Well	$ 0.75	-	$ 0.79	$ 0.75	-	$ 0.80
			Transportation Costs	$ 0.33	-	$ 0.38	$ 0.34	-	$ 0.40
			Depreciation, Depletion and Amortization	$ 1.92	-	$ 1.98	$ 1.94	-	$ 2.01
Expenses ($MM)
	Exploration, Dry Hole and Impairment			$ 110.0	-	$ 120.0	$ 440.0	-	$ 480.0
	General and Administrative			$   60.0		$   66.0	$ 235.0		$ 260.0
	Gathering and Processing			$     9.0	-	$   13.0	$   39.0	-	$   46.0
	Capitalized Interest			$   10.0	-	$   14.0	$   49.0	-	$   53.0
	Net Interest			$   18.0	-	$   22.0	$   75.0	-	$   84.0
Taxes Other Than Income (% of Revenue)				5.5%	-	8.0%	5.5%	-	8.0%
Income Taxes
	Effective Rate			35%	-	45%	35%	-	45%
	Deferred Ratio					<10%			<10%
Capital Expenditures ($MM) - FY 2009:
- Exploration and Development, excluding Acquisitions							Approximately		$ 2,850
- Gathering, Processing and Other							Approximately		$    250
Pricing - Refer to I.(b) Benchmark Commodity Pricing in text
	Natural Gas ($/Mcf)
		Differentials (include the effect of physical contracts)
			United States - below NYMEX Henry Hub	$ 0.55	-	$ 0.75	$ 0.55	-	$ 0.70
			Canada - below NYMEX Henry Hub	$ 0.20	-	$ 0.40	$ 0.42	-	$ 0.60
		Realizations
			Trinidad	$ 1.00	-	$ 1.45	$ 1.35	-	$ 1.55
			Other International	$ 5.85	-	$ 7.85	$ 5.50	-	$ 6.25
	Crude Oil and Condensate ($/Bbl)
		Differentials
			United States - below WTI	$ 8.00	-	$ 12.00	$ 8.25	-	$   9.50
			Canada - below WTI	$ 5.50	-	$   7.50	$ 4.65	-	$   6.50
			Trinidad - below WTI	$ 8.50	-	$ 12.50	$ 8.50	-	$ 12.50