Approximately 4,500 BOE per day of the shut-in production was from Whiting's Postle Field and Dry Trail Gas Plant in Texas County, Oklahoma. Electric power was out from December 29, 2006 until January 4, 2007, at which time Whiting Oklahoma and Texas based personnel returned approximately two-thirds of the field to production through the use of 21 mobile electric generators. The local utility has not yet restored full power to the Postle Field but is expected to do so by January 31, 2007. Thereafter, approximately 4,500 BOE per day is again expected to be produced.
Approximately 760 BOE per day of the Company's reduced production was from the North Ward Estes Field, located in Ward and Winkler Counties, Texas. Several equipment upgrades were implemented and activities are again concentrated on water flood restoration and commencement of CO2 injection in the second quarter of 2007.
Other factors also contributed to lower fourth quarter production: weather-related oil trucking issues in North Dakota; a fire at a third-party facility on November 13, 2006 that restricted production from the Bridger Lake/Lucky Ditch Field in Uintah County, Wyoming; and, a large number of well workovers, which also impacted Whiting's lease operating expense during the quarter. Whiting has adjusted fourth quarter and full-year 2006 production guidance in this news release. Whiting will issue guidance for 2007 on February 27, 2007.
During the fourth quarter, the company changed its labor billing practices to better conform to COPAS guidelines. The changes resulted in lower general and administrative expense to Whiting and higher amounts of labor/lease operating expense being charged to Whiting and its non-operating working interest owners on Whiting operated properties. In addition, Whiting experienced additional, but slowing, inflation in the cost of oil field goods and services.
Whiting expects its fourth quarter crude oil and natural gas price differentials to be greater than the Company's previous guidance. Factors affecting the oil price differential were increasing spreads from NYMEX in the Rocky Mountain region and at Whiting's North Ward Estes and Postle Fields and lower plant product prices. The primary factor affecting Whiting's gas price differential was the large spread between the NYMEX gas price and the Houston Ship Channel price in December 2006. Whiting's natural gas contracts more closely correlate with the Houston Ship Channel price.
Whiting's capital expenditures in the fourth quarter of 2006 totaled approximately $113.3 million, bringing total capital expenditures in 2006 to approximately $455 million.
Whiting Petroleum Corporation is a holding company engaged in oil and natural gas acquisition, exploitation, exploration and production activities primarily in the Permian Basin, Rocky Mountains, Mid-Continent, Gulf Coast and Michigan regions of the United States.
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