Resources Contact Us Home
Differential energy acoustic measurements of formation characteristic

Image Number 3 for United States Patent #4888740.

A method for acoustically investigating characteristics of formations penetrated by a borehole such as fractures by taking differential Stoneley wave acoustic energy measurements between pairs of receivers of an array of receivers carried by a logging tool. The receivers of each pair all have the same spacing. The energy is that detected by the receivers in response to acoustic pulses generated by a transmitter spaced from the receivers on the tool. The differential energy measurements are stacked to obtain a stacked differential energy log.

  Recently Added Patents
Authenticating messages sent between a vehicle and a central facility
Reactor core of liquid metal cooled reactor
Granulated sweetening composition
Profile-based user access to a network management system
Approaching object detection system
LCD driving circuit in which shift register units are driven by a first clock signal of fixed duty/amplitude and a second clock signal of variable duty/amplitude
  Randomly Featured Patents
Thumbrest ring adapter for musical instrument
High speed automatic terminal-pressing machine
Television receiver arrangement having means for the selective use of separated or locally generated synchronizing signals
Molding system
Bicyclic 9a-azalide derivatives
Carpet fiber blends
Radio terminal, communication control method and computer program
Horizontal deflection circuit with reduced VLF electric fields from CRT displays
Processing apparatus with pressure control and gas recirculation system
Disk drive including unitary deck for aligning and supporting axially retractable spindle assembly