Helmerich & Payne, Inc. engages in contract drilling of oil and gas well. It operates through the following segments: U.S. Read More Land, Offshore, and International Land. The U.S. Land segment operates its drilling business primarily in Oklahoma, California, Texas, Wyoming, Colorado, Louisiana, Mississippi, Pennsylvania, Ohio, Utah, New Mexico, Montana, North Dakota, West Virginia and Nevada. The Offshore segment conducts its business in the Gulf of Mexico and Equatorial Guinea. The International Land segment operates in six international locations including Ecuador, Colombia, Argentina, Bahrain, United Arab Emirates, and Mozambique. The company was founded by Walter Helmerich Hugo II and William Payne in 1920 and is headquartered in Tulsa, OK.