This will be the first horizontal Tar formation well drilled in the Northwest extension of the WTU. This is also the first of eight Tar formation oil wells that are currently planned to be drilled during the second and third quarters of 2010, the company said.

The WTU No 2171 well is being directionally drilled to a total measured depth of approximately 5,300ft. The company anticipates that the drilling and completion operations for this well will take approximately two weeks.

Warren Resources is an independent energy company engaged in the exploration and development of domestic oil and natural gas reserves. Its activities are primarily focused on oil in the Wilmington field in California and natural gas in the Washakie basin in Wyoming.