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An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), wal...
An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





Pumpjacks, Ventura Avenue Oil Field. Pump jacks in the Ventura Avenue Oil Field. Since oil was first discovered in this regio...
Pumpjacks, Ventura Avenue Oil Field. Pump jacks in the Ventura Avenue Oil Field. Since oil was first discovered in this region in 1918, it has produced over 729 million barrels of oil and 1.8 billion metric cubic feet of natural gas. It is estimated that it will ultimately produce over one billions barrels of oil.* The oil production, has not come without great cost to the surrounding ecosystems, namely the Ventura River which formerly supported steelhead fish populations the numbered in the tho





A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end kn...
A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (right side), wa...
An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (right side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end kn...
A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (right side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead', and walking bea...
An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead', and walking beam. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





Horsehead pump pumping crude oil, evening mood on the island of Usedom, Mecklenburg-Western Pomerania, North Germany, Germany...
Horsehead pump pumping crude oil, evening mood on the island of Usedom, Mecklenburg-Western Pomerania, North Germany, Germany, Europe





High dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end know...
High dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





An oil well pump jack in northeastern Colorado. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, ...
An oil well pump jack in northeastern Colorado. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





An oil well pump jack in northeastern Colorado. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, ...
An oil well pump jack in northeastern Colorado. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end kn...
A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





An aerial view of an oil well pump jack and a flare stack, which burns off excess natural gas, on eastern Colorado's plains.





A Pumpjack (also known as nodding donkey, horsehead pump, beam pump or Jack pump) is the overground drive fora reciprocating ...
A Pumpjack (also known as nodding donkey, horsehead pump, beam pump or Jack pump) is the overground drive fora reciprocating piston pump installed in an oil well. Pumpjacks are common in Oil rich areas
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