Wireline Operations. This is part of the Oil and Gas Production Series. Many of todayâs most vital oilfield operations depend directly on the use of wireline, a strong, thin length of wire cable mounted on a powered reel. Wireline is particularly important during completion and production. Field operators can run anything from a basic downhole directional survey to the most delicate gamma ray formation log on wireline.
The first modern solution of general relativity that would characterize a black hole was found by Karl Schwarzschild in 1916, although its interpretation as a region of space from which nothing can escape was first published by David Finkelstein in 1958.
Both first ones (Titania and Oberon) were discovered by William Herschel in 1787. Two other moons, Ariel and Umbriel, were discovered by William Lassell in 1851. It is John Herschel, the son of William who gave their names to the first four moons of Uranus (Oberon, Titania, Ariel, Umbriel).Names are pulled by the characters of the  Dream of a summer night  of William Shakespeare.Gerard Kuiper discovered Miranda in 1948.oth first ones (Titania and Oberon) were discovered by William Herschel in 1787. Two other moons, Ariel and Umbriel, were discovered by William Lassell in 1851. It is John Herschel, the son of William who gave their names to the first four moons of Uranus (Oberon, Titania, Ariel, Umbriel).