Patents by Inventor Todd M. Doscher

Todd M. Doscher 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).

  • Heavy oil recovery by high velocity non-condensible gas injection
    Patent number: 4610304
    Abstract: Oil recovery method using injection of non-condensible gas (1) into an oil zone (16) via perforations along the length of an injection well (12) to drive oil through the zone to a production well (14), with the gas injected at a rate no greater than 2,000,000 SCFD per acre and with sufficient velocity to emulsify the oil.
    Type: Grant
    Filed: November 27, 1984
    Date of Patent: September 9, 1986
    Inventor: Todd M. Doscher
  • Enhanced steam drive recovery of heavy oil
    Patent number: 4516636
    Abstract: A method for enhancing steam drive recovery of oil from an oil zone disposed below an overburden (18) including injecting a surfactant continuously into a supply (20) of driving steam to uniformly mix the surfactant with the steam and thereby provide a driving fluid. The driving fluid is then introduced into the oil zone (16) under sufficient pressure to cause the fluid to drive through a flow channel (S) between the interface I and the overburden (18) thereabove. The surfactant reacts with the oil to enable the fluid to strip away a top layer of the oil which is driven to a production well 14 for removal thereof.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: May 14, 1985
    Inventor: Todd M. Doscher