Schlumberger

Joint PP-PS Inversion

New information and improved confidence from shear wave data

A flexible joint inversion scheme allows a range of P-wave and S-wave data to be combined for different inversion goals. Analyzing the results from independent datasets can provide additional value and reduce risk or uncertainty. For example, joint PP-PS inversion can help determine fracture density and orientation, provide fluid / lithology discrimination and characterization, enable seismic classification of PP/PS attributes, and identify drilling hazards (over-pressure, shallow gas, rock strength, and others).

Independent poststack inversion can be used as a detailed check of the event correlation or as a deliverable itself. PS data can be inverted directly or after transformation to S reflectivity. For wide-azimuth geometries, the AVO attributes can be analyzed for azimuthal variation. An additional refinement of standard shear-wave splitting inversion can be used to show the direction and degree of tilt in tilted fracture sets.

Schlumberger offers a range of AVO and Inversion technologies appropriate to either conventional P-wave or joint PP-PS data sets.

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WesternGeco

Joint PP-PS Inversion

Joint PP-PS inversion using borehole-calibrated multicomponent data
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