Oasis Petroleum Inc. (NYSE: OAS) announced that it has priced an offering of $400 million aggregate principal amount of senior unsecured notes due 2023. The notes will bear interest at a rate of 6.875% per annum and will be issued at par. The size of the offering was increased from the previously announced $300 million to $400 million. The offering is expected to close on July 2, 2012, subject to customary closing conditions. The senior unsecured notes will be jointly and severally guaranteed on a senior unsecured basis by all ...