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Cedar oil must be removed from the objective immediately after use before it can harden, since removing hardened cedar oil can damage the lens. [2] In modern microscopy, synthetic immersion oils are more commonly used, as they eliminate most of these problems. [2] NA values of 1.6 can be achieved with different oils.
Drilling in deep waters can be performed by two main types of mobile deepwater drilling rigs: semi-submersible drilling rigs and drillships.Drilling can also be performed from a fixed-position installation such as a fixed platform, or a floating platform, such as a spar platform, a tension-leg platform, or a semi-submersible production platform.
Offshore drilling for oil and gas on the Atlantic coast of the United States took place from 1947 to the early 1980s. Oil companies drilled five wells in Atlantic Florida state waters and 51 exploratory wells on federal leases on the outer continental shelf of the Atlantic coast. None of the wells were completed as producing wells.
In 1937, Pure Oil and its partner Superior Oil used a fixed platform to develop a field 1 mile (1.6 km) offshore of Calcasieu Parish, Louisiana in 14 feet (4.3 m) of water. In 1938, Humble Oil built a mile-long wooden trestle with railway tracks into the sea at McFadden Beach on the Gulf of Mexico, placing a derrick at its end – this was ...
Offshore oil and gas in the United States provides a large portion of the nation’s oil and gas supply. Large oil and gas reservoirs are found under the sea offshore from Louisiana, Texas, California, and Alaska. Environmental concerns have prevented or restricted offshore drilling in some areas, and the issue has been hotly debated at the ...
"It is the most significant set of market dislocations and distortions in energy markets generally speaking that I ever recall,” Ed Morse, global head of commodity research at Citi Group, told ...
The state of Louisiana issued its first offshore oil and gas lease in 1936, and the following year the Pure Oil Company discovered the first Louisiana offshore oil field, the Creole Field, 1.2 miles (1.9 km) from the shore of Cameron Parish, from a platform built on timber pilings in 10-to-15-foot-deep (3.0 to 4.6 m) water.
Today, castor oil is sold over-the-counter at pharmacies and added to cosmetics and cleaners. Some types of castor oil are intended for ingestion (USP-grade or food-grade) while others are only ...