Nighthawk Energy said the cumulative test production from the 11 wells on its 50% owned Jolly Ranch asset was 21,238 barrels gross at the end of the year.The quality of the oil is good ranging from 32 to 41 API (American Petroleum Institute) gravity as independently verified by Weatherford Laboratories.Nighthawk has two more wells waiting to come on stream at the Jolly Ranch project, which is in Colorado. In addition, an existing production well completed in an Atoka sandstone reservoir has been acquired from the State of ColoradoThe company added that at 22 February it had $18.3m in cash plus liquid assets, and remains debt free.