Macrofunciones ingles ii petroleo

Function Description
Submersible Rigs
Submersible rigs, suitable for shallow water, come in contact with the ocean or lake floor. These rigs consist of platforms with two hulls positioned on topof one another. The upper hull contains the living quarters for the crew, as well as the actual drilling platform. The lower hull works much like the outer hull in a submarine - when the platform isbeing moved from one place to another, the lower hull is filled with air - making the entire rig buoyant. When the rig is positioned over the drill site, the air is let out of the lower hull, and therig submerses to the sea or lake floor. This type of rig has the advantage of mobility in the water, however once again its use is limited to shallow water areas.

Semisubmersible RigsSemisubmersible rigs are the most common type of offshore drilling rigs, combining the advantages of submersible rigs with the ability to drill in deep water. A semisubmersible rig works on the same principle as asubmersible rig: through the 'inflating' and 'deflating' of its lower hull. The main difference with a semisubmersible rig, however, is that when the air is let out of the lower hull, the rig doesnot submerge to the sea floor. Instead, the rig is partially submerged, but still floats above the drill site. When drilling, the lower hull, filled with water, provides stability to the rig.Semisubmersible rigs are held in place by huge anchors, each weighing upwards of 10 tons. These anchors, combined with the submerged portion of the rig, ensure that the platform is stable and safe enough to beused in turbulent offshore waters. Semisubmersible rigs can be used to drill in much deeper water than the rigs mentioned above.

Instruction Paragraph
Viscosity can be measured with a MarshFunnel. The procedure is as follows:
1. Hold funnel in upright position with index finger over the outlet.
2. Pour the drilling fluid through the screen in the top of the funnel until the drilling...