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  2. Diamond Offshore Drilling - Wikipedia

    en.wikipedia.org/wiki/Diamond_Offshore_Drilling

    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 ...

  3. Core sample - Wikipedia

    en.wikipedia.org/wiki/Core_sample

    Rock core samples, the product of a diamond rig. A pied butcherbird perches nearby. A core sample is a cylindrical section of (usually) a naturally-occurring substance. Most core samples are obtained by drilling with special drills into the substance, such as sediment or rock, with a hollow steel tube, called a core drill. The hole made for the ...

  4. Boart Longyear - Wikipedia

    en.wikipedia.org/wiki/Boart_Longyear

    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 ...

  5. Exploration diamond drilling - Wikipedia

    en.wikipedia.org/wiki/Exploration_diamond_drilling

    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.

  6. Patterson-UTI - Wikipedia

    en.wikipedia.org/wiki/Patterson-UTI

    Patterson Drilling Company was founded in 1978 by Cloyce Talbott and Glenn Patterson. [1] UTI Energy was formed in 1986 to purchase Universal Well Services, Union Supply Company, Triad Drilling Company, and International Petroleum Services Company. In 2001, Patterson Drilling acquired UTI Energy and renamed the company Patterson-UTI Energy. [3]

  7. Transocean - Wikipedia

    en.wikipedia.org/wiki/Transocean

    Transocean Ltd. is an American drilling company. [2] It is the world's largest offshore drilling contractor based on revenue and is based in Steinhausen, Switzerland . [ 3 ] [ 4 ] The company has offices in 20 countries, including Canada, the United States, Norway, United Kingdom, India, Brazil, Singapore, Indonesia, and Malaysia.

  8. Hughes Tool Company - Wikipedia

    en.wikipedia.org/wiki/Hughes_Tool_Company

    This became the "new" Hughes Tool Company while the remaining divisions of the business were placed in a new holding company, the Summa Corporation. During the 1979 visit by Deng Xiaoping to the United States, Deng visited the company's Houston plant. [8] Hughes Tool Company merged with Baker International to form Baker Hughes Incorporated in ...

  9. Helmerich & Payne - Wikipedia

    en.wikipedia.org/wiki/Helmerich_&_Payne

    Helmerich & Payne Flex Rig drilling the Bakken. Helmerich & Payne, Inc. (/ ˈ h ɛ l m r ɪ k / HELM-rik) is an American petroleum contract drilling company engaged in oil and gas well drilling and related services for exploration and production companies [2] headquartered in Tulsa, Oklahoma, with operations throughout the world.