Christmas Tree 10 : The valves, pressure gages, and chokes assembled at the top of a well to control the flow of oil and gas after the well has been completed. (WLOP)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}