Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Differential energy acoustic measurements of formation characteristic Image Number 4 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 NAT traversal for media conferencing Injection guidance system and method Electric mixer Eraser and marker holder for white boards System and method for selecting messaging settings on a messaging client Methods for the detection and/or quantification of gram positive bacterial contaminants Transfer of title through intermediary   Randomly Featured Patents Mouse handled in hand Method and apparatus for pinch protection for a motor-driven closure system Top-fill hummingbird feeder with twist bottle valve Projection optical system and projection display device using the same Head-up display system Frequency multiplier device Glass sealant of spark plug insulator for use in an internal combustion engine Kitty knocker Color filter substrate having reflecting and transmitting components, liquid crystal display device having the same, and electronic device having the same Process for producing structured layers, process for producing components of an integrated circuit, and process for producing a memory configuration © 2006-2008 PatentGenius. All Rights Reserved.