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.
Black Holes: Facts, Theory & Definition. 1  Stellar black holes â small but deadly. 2  Supermassive black holes â the birth of giants. 3  Intermediate black holes â stuck in the middle. 4  Black hole theory â how they tick. 5  Interesting facts about black holes. 1  If you fell into a black hole, theory has long suggested that gravity would stretch you out like spaghetti, though your death would come before you reached singularity. 2  Black holes do not suck.. 3  The first object considered to be a black hole is Cygnus X-1.