The standard method involves percussion drilling in which a drill is alternatively raised and dropped in the descending borehole. It is suited to the drilling of wells in any material from soft clay to the hardest rock.
[pdf] Mr. Louie is a former self-elevating drilling barge (jackup rig) converted into an oil platform. It was the first self-elevating drilling barge classed by the American Bureau of Shipping. As an oil platform, it operates at the Saltpond Oil Field, offshore Ghana. .
Mr. Louie weighs 6200 tons. Its minimal operational water depth is 40 metres (130 ft). It has five tugs which pulled her around, and twelve legs for standing on the . It has rings welded onto its cylindrical legs to. .
Mr Louie was designed by Emile Brinkmann between 1956 and 1958. The drilling barge was built by Universal Drilling Co. It was launched in 1958 and delivered in 1959. In.
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