Patents by Inventor Timothy Whittle

Timothy Whittle 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).

  • Method for determining the characteristics of a fluid-producing underground formation
    Patent number: 4597290
    Abstract: Disclosed is a method for determining the physical characteristics of a system made up of a well and an underground formation containing a fluid and communicating with the well. A change in the rate of flow of the fluid is produced and a measurement is made of a parameter characteristic of the pressure P of the fluid at successive time intervals .DELTA.t. One then compareson the one hand, the theoretical evolution of the logarithm of the derivative P'.sub.D of the dimensionless pressure as a function of the logarithm of t.sub.D /C.sub.D, the derivative P'.sub.D being with respect to t.sub.D /C.sub.D, t.sub.D representing the dimensionless time and C.sub.D the wellbore storage (compression or decompression) effect, withon the other hand, the experimental evolution of the logarithm of the derivative .DELTA.P' of the pressure as a function of the logarithm of the corresponding time intervals .DELTA.t, the derivative .DELTA.P' being with respect to time t.
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: July 1, 1986
    Assignee: Schlumberger Technology Corporation
    Inventors: Dominique Bourdet, Timothy Whittle