Enertech Engineering and Research Co.

ENERTECH

Engineering Services-Namely, Design of Drill String, Tubing, Casing and Well Completion Equipment for the Petroleum Industry and for Computing Services-Namely, Software Programs for Thermal Simulation and Stress Analysis in Conjunction with Subsurface Conditions in the Petroleum Industry;

ETI

Engineering Services-Namely, Design of Drill String, Casing and Well Completion Equipment for the Petroleum Industry and Thermal Simulation and Stress Analysis of Subsurface Conditions for the Petroleum Industry Through the Use of a Computer;

WELLFLOW

COMPUTER SOFTWARE PROGRAMS RECORDED ON MAGNETIC MEDIA FOR PREDICTING PRESSURE DROPS, FLOWING FLUID PROPERTIES AND HYDRAULIC VARIABLES IN A WELL;

WELLSTRESS

Computer Programs Recorded on Magnetic Media for Stress Analysis of Oil and/or Gas Well Components, i.e. Casings, Tubing, Hangers, Cement, Wellbore Formations, Wellheads and the Like;

WELLTEMP

Computer Software Programs and Materials Associated Therewith-Namely, a Computer Code for Determining Downhole Wellbore Temperatures;