X0101 EFFECT 33 LIVE 2011-09-20 10:00:00

S-4

0001121484 OIL STATES INTERNATIONAL, INC 333-176605 0001524165 Acute Technological Services, Inc. 333-176605-18 0001524167 Capstar Drilling LP, L.L.C. 333-176605-17 0001524169 Capstar Holding, L.L.C. 333-176605-16 0001524168 Capstar Drilling, Inc. 333-176605-15 0001524166 Capstar Drilling GP, L.L.C. 333-176605-14 0001524170 General Marine Leasing, LLC 333-176605-13 0001354918 Oil States Energy Services, Inc. 333-176605-12 0001524172 Oil States Management, Inc. 333-176605-11 0001524171 Oil States Industries, Inc. 333-176605-10 0001524173 Oil States Skagit SMATCO, LLC 333-176605-09 0001524174 PTI Group USA LLC 333-176605-08 0001524175 PTI Mars Holdco 1, LLC 333-176605-07 0001524177 Sooner Inc. 333-176605-06 0001524178 Sooner Pipe, L.L.C. 333-176605-05 0001524176 Sooner Holding Co 333-176605-04 0001524179 Specialty Rental Tools & Supply, L.L.C. 333-176605-03 0001524180 Stinger Wellhead Protection, Inc 333-176605-02 0001524181 Well Testing, Inc. 333-176605-01