Sierra Geophysics, Inc.

2DI

2 DI;CONSULTING SERVICES FOR THE DEVELOPMENT OF GEOPHYSICAL EXPLORATION SOFTWARE;

2DI

PRERECORDED COMPUTER PROGRAMS FOR USE IN PHYSICS, MATHEMATICAL ANALYSIS, GEOPHYSICS, GEOLOGY, PETROLEUM ENGINEERING, RESERVOIR ENGINEERING, MINERALS EXPLORATION, CARTOGRAPHY, INTERACTIVE GRAPHICS APPLICATIONS, AND GEOTECHNICAL ANALYSIS;COMPUTER PROGRAM USER MANUALS;2 DI;

2DMOD

COMPUTER PROGRAMS FOR SEISMIC DATA PROCESSING AND GEOLOGICAL AND GEOPHYSICAL EXPLORATION;COMPUTER PROGRAM INSTRUCTION MANUALS;2D-MOD;

AES

PRERECORDED COMPUTER PROGRAMS;USER MANUALS THEREFOR;

AIS

COMPUTER PROGRAMS FOR USE IN THE FIELD OF SEISMIC DATA PROCESSING AND GEOPHYSICAL AND GEOLOGICAL EXPLORATION;COMPUTER INSTRUCTION MANUALS FOR USE IN THE FIELD OF SEISMIC DATA PROCESSING AND GEOPHYSICAL AND GEOLOGICAL EXPLORATION;

AMS

PRERECORDED COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND SEISMIC DATA ANALYSIS;USER MANUALS FOR USE WITH COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND SEISMIC DATA ANALYSIS;

ISX

prerecorded computer programs for use in geophysical and geological exploration and data analysis;user manuals for use with computer programs for use in geophysical and geological exploration and data analysis;Is 10;

MIMIC

PRERECORDED COMPUTER PROGRAMS FOR GEOLOGIC MODELING AND MAPPING;COMPUTER PROGRAM USER MANUALS;

MOD2D

COMPUTER PROGRAMS FOR SEISMIC DATA PROCESSING AND GEOLOGICAL AND GEOPHYSICAL EXPLORATION;COMPUTER PROGRAM INSTRUCTION MANUALS;MOD-2D;

MODSYS

PRERECORDED COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;USER MANUALS FOR USE WITH COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;Model System;

MODSYS PLUS

prerecorded computer programs for use in geophysical and geological exploration and data analysis;user manuals for use with computer programs for use in geophysical and geological exploration and data analysis;

QUIKCDP

PRERECORDED COMPUTER PROGRAMS FOR THREE-DIMENSIONAL RAYTRACING IN CONJUNCTION WITH GEOPHYSICAL EXPLORATION;COMPUTER PROGRAM USER MANUALS;QUICK DP;

QUIKDIG

PRERECORDED COMPUTER PROGRAMS FOR GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;COMPUTER PROGRAM USER MANUALS;QUICK DIG;

QUIKLOG

PRERECORDED COMPUTER PROGRAMS FOR GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;COMPUTER PROGRAM USER MANUALS;QUICK LOG;

QUIKMOD

COMPUTER PROGRAMS FOR SEISMIC DATA PROCESSING AND GEOLOGICAL AND GEOPHYSICAL EXPLORATION;COMPUTER PROGRAM INSTRUCTION MANUALS;QUICK MOD;

QUIKPICK

PRERECORDED COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;USER MANUALS FOR USE WITH COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;Quick Pick;

RAPTOR

COMPUTER PROGRAMS FOR SEISMIC DATA PROCESSING AND GEOLOGICAL AND GEOPHYSICAL EXPLORATION;COMPUTER PROGRAM INSTRUCTION MANUALS;

SEISMOD

COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;COMPUTER MANUALS;

SG

Research and Consulting Services in Geophysics and Seismology;

SG

Prerecorded Computer Programs;Software User Manuals;

SHARED CANVAS

computer programs for use in geophysical and geological exploration and data analysis;user manuals for use with computer programs for use in geophysical and geological exploration and data analysis;

SIERRA

PRERECORDED COMPUTER PROGRAMS FOR USE IN PHYSICS, MATHEMATICAL ANALYSIS, GEOPHYSICS, GEOLOGY, PETROLEUM ENGINEERING, RESERVOIR ENGINEERING, MINERALS EXPLORATION, CARTOGRAPHY, INTERACTIVE GRAPHICS APPLICATIONS, AND GEOTECHNICAL ANALYSIS;COMPUTER PROGRAM USER MANUALS THEREFOR;

SIERRA

PRERECORDED COMPUTER PROGRAMS FOR USE IN PHYSICS, MATHEMATICAL ANALYSIS, GEOPHYSICS, GEOLOGY, PETROLEUM ENGINEERING, RESERVOIR ENGINEERING, MINERALS EXPLORATION, CARTOGRAPHY, INTERACTIVE GRAPHICS APPLICATIONS, AND GEOTECHNICAL ANALYSIS;COMPUTER PROGRAM USER MANUALS THEREFOR;

SIERRA GEOPHYSICS

Research and Consulting Services in Geophysics and Seismology;

SIERRA GEOPHYSICS

Prerecorded Computer Programs;No claim is made to the exclusive right to use Geophysics, apart from the mark as shown.;Software User Manuals;

SIERRA TECHNOLOGY CENTER

COMPUTER TRAINING SERVICES;TECHNOLOGY CENTER;COMPUTER CONSULTING SERVICES IN THE FIELD OF GEOLOGICAL MODELING AND ANALYSIS, SEISMIC INTERPRETATION, WELL-LOG ANALYSIS AND SEISMIC PROCESSING;

SIPS

PRERECORDED COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND ANALYSIS;USER MANUALS FOR USE WITH PRERECORDED COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND ANALYSIS;

SLICK

computer programs for use in geophysical and geological exploration and data analysis;computer manuals;

STRATLOAD

prerecorded computer programs for use in geophysical and geological exploration and data analysis;program user manuals for use with computer programs for use in geophysical and geological exploration and data analysis;Strategic Load;

STRATLOG

COMPUTER PROGRAMS FOR GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;COMPUTER PROGRAM USER MANUALS;STRATEGY LOG;

STRATSYS

PRERECORDED COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;USER MANUALS FOR USE WITH COMPUTER PROGRAMS FOR USE IN GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;Strat System;

STRATSYS PLUS

computer programs for use in geophysical and geological exploration and data analysis;computer manuals;

THE HALLIBURTON LIBRARY

computer programs for use in geophysical and geological exploration and data analysis and drilling and pumping of oil, and oil field surveying and exploration;user manuals for use in geophysical and geological exploration and data analysis and drilling and pumping of oil, and oil field surveying and exploration;LIBRARY;

WILDCAT

PRERECORDED COMPUTER PROGRAMS FOR GEOPHYSICAL AND GEOLOGICAL EXPLORATION AND DATA ANALYSIS;COMPUTER PROGRAM USER MANUALS THEREFOR;