Once the well has been completed, cased, capped and collared at the surface, a pump jack will arrive on site (see diagram) for assembly in order to start pumping oil from the well.. there is a curved metal box called a horse head or donkey head, named due to its appearance. A cable, usually made of steel called a bridle, connects the horse.. Download scientific diagram | Donkey head, the site of needle inserted below the depressor labii inferioris muscle into the mental foramen for inferior alveolar and mental nerve blocks (yellow.
Learn about the different parts of a pump jack with our detailed diagram. Understand how each component works together to extract oil or gas efficiently. Find out the functions of the walking beam, horse head, pitman arm, and more. Discover the inner workings of this essential oil field equipment.. Donkey Head Diagram. Posted by Head Diagram (Author) 2024-11-28 Taylorcustom Diagrams And Documents. 4 Vintage Phrenology Head Diagrams. Anatomical Human Head.