Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Seismic method of performing the time picking step










Image Number 10 for United States Patent #6868038.

The present invention provides a method of performing the time picking step in a VSP (vertical seismic profile) survey. In a preferred embodiment of the invention the time picking step is carried out on a combined three-component amplitude of the received seismic energy, which contains the amplitude of all the seismic energy received at the receiver. The amplitude of the direct pulse in the combined trace will not decrease to zero as the offset of the source is changed, as can be the case for the single-component amplitude of the direct pulse. In a particularly preferred embodiment of the invention, the combined three-component amplitude is calculated by summing the Hilbert instantaneous amplitudes of the x-, y- and components of the seismic data using the equation (I). The present invention also provides two new time picks. One time pick involves finding the maximum positive gradient of A(t). The other time pick entails extrapolating to A(t)=0 from the time at which A(t) has its greatest positive gradient, using the maximum positive gradient for the extrapolation.








 
 
  Recently Added Patents
Cosmetic composition based on a supramolecular polymer and a hyperbranched functional polymer
Photovoltaic system with integrated photovoltaic panel and battery
Transistor and display device
Methods and systems to accomplish variable width data input
Apparatus and method for providing vehicle data for testing product
Method for operation of multi-layer-multi-turn high efficiency inductors
Electrical installation arrangement
  Randomly Featured Patents
Voter circuit including averaging means
Eating utensil
Voltage generating circuit
Method for disposing of hazardous waste material while producing a reusable by-product
Fishing lure
2-Thiazolamine derivatives, process for preparing same, and pharmaceutical compositions comprising same
Side element of a shoe upper
Lamp
Photonic structure
OFDM transmission system