Multi-pole transmitter source

Details Multi-pole transmitter source Multi-pole transmitter source

G - Physics

01

V

G01V 1/44 (2006.01) G01V 1/52 (2006.01)

Patent

CA 2540363

Methods and apparatus facilitating logging-while-drilling (LWD) u acoustic transmitter source. The multi-pole transmitter source enables formation velocities, including shear wave velocities through formations tha velocities through local fluids. The methods and apparatus are particularl LWD and wireline seismic surveys in which both the seismic or acoustic so are both deployed in a borehole, but may also be used for VSPs (vertical seis ing a multi-pole easurement of are slower than well suited for ce and receivers is profiling).

Procédés et appareil permettant de faciliter la diagraphie pendant forage (LWD) et faisant appel à une source de transmission acoustique multipolaire. La source de transmission multipolaire permet de mesurer les vitesses des formations, y compris les vitesses d'ondes de cisaillement à travers des formations qui sont plus lentes que les vitesses à travers des fluides localisés. Ces procédés et cet appareil conviennent particulièrement aux relevés sismiques par câble et de LWD dans lesquels les récepteurs et les sources sismiques ou acoustiques sont tous déployés dans un puits de forage mais peuvent également être utilisés pour le profilage sismique vertical (VSP).

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