X0101 EFFECT 33 LIVE 2012-09-05 09:00:00

S-4

0001311486 Global Geophysical Services Inc 333-182867 0001557196 Global Eurasia, LLC 333-182867-06 0001497867 AUTOSEIS INC 333-182867-05 0001557257 Autoseis Development Co 333-182867-04 0001497866 GGS International Holdings Inc. 333-182867-03 0001501070 GLOBAL MICROSEISMIC SERVICES, INC. 333-182867-02 0001557197 Paisano Lease Co., Inc. 333-182867-01