News Releases

HOUSTON, Aug. 4 /PRNewswire-FirstCall/ -- Oasis Petroleum Inc. (NYSE: OAS) ("Oasis" or the "Company") plans to issue its press release announcing second quarter 2010 financial and operational results on Wednesday, August 11, 2010 after the close of trading on the NYSE. Additionally, the Company will host a conference call on Thursday, August 12, 2010 at 10:00 a.m. Central Time to discuss its second quarter 2010 financial and operational results. Investors, analysts and other interested parties are invited to listen to the conference call via the Company's website at www.oasispetroleum.com or by dialing (877) 621-0256 (US participants) or (706) 634-0151 (International participants) with the Conference ID of 91347739. A recording of the conference call will be available by dialing (800) 642-1687 (US participants) or (706) 645-9291 (International participants) using the Conference ID of 91347739 beginning at 1:00 p.m. Central Time on the day of the call until Thursday, August 19, 2010. The conference call will also be available for replay for 30 days at www.oasispetroleum.com.

About Oasis Petroleum Inc.

Oasis is an independent exploration and production company focused on the acquisition and development of unconventional oil and natural gas resources, primarily focused in the Williston Basin. For more information, please visit our website at www.oasispetroleum.com.

SOURCE Oasis Petroleum Inc.