Oil field structures are an important part of the oil industry. Derrick is a type of structure used in oil fields, and it is an 8-letter word. A derrick is a tall tower-like structure that is used to support drilling equipment and to lift and lower heavy loads. It is typically made of metal and can be used for a variety of purposes, such as lifting and lowering pipes, drilling rigs, and other equipment. DERRICKS are an essential part of the oil industry, as they are used to safely and efficiently extract oil from the ground.