Patents by Inventor Alain Pottier

Alain Pottier has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Well perforating apparatus
    Patent number: 4496008
    Abstract: The apparatus comprises an elongated support (22) having a series of flat-faced portions and explosive charges (23) mounted perpendicular to the flat faces. Detonating cords are connected to the charges to fire them.Each portion of the support has two closely spaced attachment holes adapted to receive respectively the rear parts of the two charges mounted in opposite directions on each face of this section. The support is made up of a tube flattened transversely so as to form the flat-faced portions. Spacers are disposed between the charges and the support for casings of large diameter. The cases of the charges comprise a cover made of ceramic material and an extruded steel body which tends to flare out when the explosive is detonated rather than being broken into pieces.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: January 29, 1985
    Assignee: Schlumberger Technology Corporation
    Inventors: Alain Pottier, Pierre Chesnel
  • Well perforating apparatus
    Patent number: 4393946
    Abstract: The apparatus comprises an elongated support (22) having a series of flat-faced sections and explosive charges (23) mounted perpendicular to the flat faces. Detonating cords are connected to the charges to fire them.Each section of the support has two closely spaced attachment holes adapted to receive respectively the rear parts of the two charges mounted in opposite directions on each face of this section. The support is made up of a tube flattened transversely so as to form the flat-faced sections. Spacers are disposed between the charges and the support for casings of large diameter. The cases of the charges comprise a cover made of ceramic material and an extruded steel body which tends to flare out when the explosive is detonated rather than being broken into pieces.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: July 19, 1983
    Assignee: Schlumberger Technology Corporation
    Inventors: Alain Pottier, Pierre Chesnel, Bernard Chaintreau