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Shortly thereafter, Diamond M Corp. briefly changed its name to Diamond M-ODECO Drilling Inc. before becoming Diamond Offshore Drilling, Inc. in 1993. [5] In October 1995, the company once again became a public company via an initial public offering, listing on the New York Stock Exchange. [6] In April 1996, the company acquired Arethusa for ...
Exploration diamond drilling differs from other geological drilling (such as Reverse Circulation (RC) Drilling [3]) in that a solid core is extracted from depth, for examination on the surface. The key technology of the diamond drill is the actual diamond bit itself. [4] It is composed of industrial diamonds set into a soft metallic matrix.
The company was founded in 1900 by Chris Schramm. It originally manufactured portable air compressors, before switching to rotary drilling rigs in the 1950s.Dick Schramm, who began working for the family business as a manufacturing engineer in 1961, worked his way up the ranks to become President of the company in 1985. [6]
Drill cuttings can be separated from liquid drilling fluid by shale shakers, by centrifuges, or by cyclone separators, the latter also being effective for air drilling. In cable-tool drilling, the drill cuttings are periodically bailed out of the bottom of the hole. In auger drilling, cuttings are carried to the surface on the auger flights.
In the 1960s and 1970s, Longyear began to diversify into other areas beyond traditional mineral exploration drilling. The company began using diamond bits for drilling and sawing concrete in the construction industry. In 1977, Longyear purchased rights to make concrete saws from the Drillistics Company. The firm's Salt Lake City plant began ...
Calumet, Inc. (NASDAQ: CLMT) is a publicly traded U.S.-based company that was incorporated in 1919. It specializes in the manufacture of lubricating oils, solvents, waxes, packaged and synthetic specialty products, fuels and fuel-related products. The company operates 12 production, blending, and packaging facilities across North America.
In 1903 the Wright Brothers had the company design special chains which they used to make their historic first airplane flight at Kitty Hawk. [6] In 1905 the company was then sold to Lucius Wainwright who had been managing the business. The company was renamed Diamond Chain & Manufacturing Company. Automobiles were becoming popular and the ...
In May 2013, the company sold Tender rigs T-15, T16 and the West Vencedor to Seadrill Partners LLC. [9] In June 2013, the company acquired a majority interest in Sevan Drilling. [10] In November 2014, the company suspended dividend payments as a result of a downturn in the industry. [11] In December 2017, the company filed bankruptcy. [12] [13 ...