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The oil well is created by drilling a long hole into the earth with an oil rig. A steel pipe (casing) is placed in the hole, to provide structural integrity to the newly drilled well bore. Holes are then made in the base of the well to enable oil to pass into the bore. Finally a collection of valves is fitted to the top, the valves regulate pressures and control flow.
Extracting Oil after the rig is removed, the crew puts a pump on the well head.
In the pump system, an electric motor drives a gear box that moves a lever. The lever pushes and pulls the polishing rod up and down. The polishing rod is attached to a sucker rod, which is attached to a pump. This system forces the pump up and down, creating a suction that draws oil up through the well.
Extracting Oil after the rig is removed, the crew puts a pump on the well head.
In the pump system, an electric motor drives a gear box that moves a lever. The lever pushes and pulls the polishing rod up and down. The polishing rod is attached to a sucker rod, which is attached to a pump. This system forces the pump up and down, creating a suction that draws oil up through the well.
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enhanced oil recovery: In some cases, the oil may be too heavy to flow, or the crew drills a second hole into the reservoir and injects steam under pressure. The heat from the steam thins the oil in the reservoir, and the pressure helps push it up the well.
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Seismic surveys use sound to produce detailed images of the various rock types and their location below the ocean floor. This information can tell us the location and size of oil, without having to disturb the land or seabed.
Seismic surveys involve an source that release bubbles of compressed air, these bubbles collapse and send a focused low frequnecy sound wave towards the sea floor.
The sound from seismic surveying is comparable to many naturally occurring marine sounds, including those made by animals themselves.
In New Zealand we have 18 sedimentary basins - with only Taranaki currently producing oil.
"For animals that rely on sounds to survive in their world, to have their habitat, to have their natural behaviors impacted by that level of sound, would not only be disruptive, it can actually cause injury and even death," Suzanne Thurman once said.
"The oceans are under siege because of all the things we're proposing to do."
Seismic surveys involve an source that release bubbles of compressed air, these bubbles collapse and send a focused low frequnecy sound wave towards the sea floor.
The sound from seismic surveying is comparable to many naturally occurring marine sounds, including those made by animals themselves.
In New Zealand we have 18 sedimentary basins - with only Taranaki currently producing oil.
"For animals that rely on sounds to survive in their world, to have their habitat, to have their natural behaviors impacted by that level of sound, would not only be disruptive, it can actually cause injury and even death," Suzanne Thurman once said.
"The oceans are under siege because of all the things we're proposing to do."