Patents by Inventor Doug Hebert

Doug Hebert 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).

  • Diversion plunger for reciprocating rod pump
    Patent number: 10731446
    Abstract: A diversion connector is used for a downhole pump having a plunger and a barrel in a well. The diversion connector is useful in a sandy well having particulates. The plunger has an interior and is reciprocated by a rod relative to the barrel. The connector includes one or more bodies, such as a mandrel, attaching the rod to the plunger. The mandrel has a first exterior surface and defines a fluid passage communicating with the interior of the plunger. A sleeve is disposed on the first exterior surface and has an interior surface floating relative to the first exterior surface. The floating sleeve at least partially prevents particulate uphole of the plunger from passing in a gap between the plunger and the barrel.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: August 4, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: John E. Stachowiak, Jason W. Bailey, Doug Hebert
  • Diversion Plunger for Reciprocating Rod Pump
    Publication number: 20160237796
    Abstract: A diversion connector is used for a downhole pump having a plunger and a barrel in a well. The diversion connector is useful in a sandy well having particulates. The plunger has an interior and is reciprocated by a rod relative to the barrel. The connector includes one or more bodies, such as a mandrel, attaching the rod to the plunger. The mandrel has a first exterior surface and defines a fluid passage communicating with the interior of the plunger. A sleeve is disposed on the first exterior surface and has an interior surface floating relative to the first exterior surface. The floating sleeve at least partially prevents particulate uphole of the plunger from passing in a gap between the plunger and the barrel.
    Type: Application
    Filed: February 16, 2016
    Publication date: August 18, 2016
    Inventors: John E. Stachowiak, Jason W. Bailey, Doug Hebert