Patterson-UTI Energy (NASDAQ: PTEN ) is an oil and gas service provider that operates mainly in the United States. The recent decline in crude oil prices has caused several producers to slightly trim drilling activity.I am a Licensed Professional Engineer who works in the Nuclear Power industry. I use my professional working knowledge of the power/energy industries to aid in evaluating potential equities worthy of long-term investment. I invest in income producing equities and rental real estate properties ...