There are 12 convenience stores, 9 of which are located in Wichita under Conoco or Phillips 66. These stores are also known as Midway Oil Co. Some of these Wichita locations offer 24 hour pay @ pump service, which gives you fast service with a major credit card. The stores and the pay @ pumps all take major credit cards including: MasterCard, Visa, American Express, and Discover. ATM machines are available in some locations in Wichita.