Greka Drilling Limited, an investment holding company, provides drilling services for coal bed methane companies in China and India. It operates a drilling fleet, which includes purpose-built, hydraulic, and top-drive rigs for the application of drilling services within the unconventional gas industry; and offers completion and directional drilling, as well as geological and geophysical services. The company was founded in 2007 and is based in Zhengzhou, China. Greka Drilling Limited is a subsidiary of Green Dragon Gas (Holdings) Limited.