Casing With External Thread and Methods of Manufacture

    公开(公告)号:US20200378194A1

    公开(公告)日:2020-12-03

    申请号:US16885427

    申请日:2020-05-28

    IPC分类号: E21B17/042 F16L58/04

    摘要: A casing for a drilling operation has a body portion having a length, a first end and a second end, an outer diameter, an inner diameter, and a central axis that is common to the outer diameter and the inner diameter, and an external thread formed on the outer diameter of the body portion, wherein the external thread starts at a first predetermined distance from the first end and ends at a second predetermined distance from the second end. The external thread includes a spiral groove or a helical thread formed on the outer diameter of the body portion. The casing includes a coating at least partially encapsulating the external thread, wherein the coating includes at least one material selected from the group consisting of polycrystalline diamond particles, diamond like carbon (DLC), tungsten carbide, boron nitride, silicon carbide, silicon nitride, and combinations thereof.

    Processes for Coating the Interior Surfaces of Nonmetal Pipes

    公开(公告)号:US20180133754A1

    公开(公告)日:2018-05-17

    申请号:US15863346

    申请日:2018-01-05

    摘要: Methods and systems for providing cleaning and providing barrier coatings to interior wall surfaces of small diameter nonmetal and composite piping systems in buildings, swimming pools, underground pipes, in-slab piping systems, piping under driveways and various liquid transmission lines. An entire piping system can be cleaned in one single pass by dry particulates forced by air throughout the building piping system by an external generator, and the entire piping system can be coated in one single pass by a machine connected exterior to the piping system. Small pipes can be protected by the effects of water corrosion, erosion and electrolysis, extending the life of piping systems such as plastics, PVC (polyvinyl chloride), composite materials, polybutylene. Coatings can be applied to pipes having diameters of approximately ⅜″ up to approximately 6″ so that entire piping systems such as potable water lines, natural gas lines, HVAC piping systems, drain lines, and fire sprinkler systems in single-family homes to apartments to high-rise hotel/resort facilities and office towers, apartment and condominium buildings and schools, can be cleaned and coated to pipes within existing walls. The coating forms at least a 4 mils or greater covering inside of pipes. Buildings can return to service within approximately 24 to approximately 96 hours.