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.
âCompletely implausibleââa controversial paper exists, but so do black holes. A researcher stands by her arguments against black holes; other scientists are skeptical. There once was a time when the existence of black holes was very much in doubt. Even Albert Einstein was an early doubter despite the fact that black holes were predicted using his equations of general relativityâhe simply believed nature wouldnât permit them.