Marlan W. Downey

TransAtlantic Petroleum Ltd. engages in the acquisition, exploration, development, and production of oil and natural gas. It operates through the following two segments: Turkey and Bulgaria. The company was founded on October 1, 1985 and is headquartered in Addison, TX.

Object Reservoir, Inc. develops and provides reservoir analysis and well modeling and forecasting tools for the oil and gas industry. It offers saige for unconventional and shale gas reservoir modeling, orpheus for conventional reservoir modeling, analytic forecasting, modeling tool for shale wells and reservoir modeling engine. The company was founded by John O. Mouton in 1995 and is headquartered in Houston, TX.

Shell International Ltd. provides business support services. It engages in upstream and downstream oil and gas businesses in the United Kingdom and internationally. The company is headquartered in London, the United Kingdom.

Arco, Inc. supplies memory components and semiconductor products. The frim offers procurement, logistic and value added, global sourcing solutions and supply chain services. The company was founded in 1994 and is headquartered in Montvale, NJ.

Roxanna Oil Co. provides oil and exploration gas services. The American company was founded by Marlan W. Downey.