Filed Nov. 2, 2011

Serial No. 85462823

Registered June 12, 2012

Registration No. 4,157,877

Class Conducting wellbore survey services for the oil and gas, energy, mining, environmental and construction industries, Providing wellbore mapping services; Providing electronic wellbore data collection services, namely, providing services of collecting of wellbore direction and orientation data from wellbore measurement devices of others in the oil and gas, energy, mining, environmental and construction industries; Providing wellbore data collection services for use in directional drilling control in the oil and gas, energy, mining, environmental and construction industries; Providing wellbore directional drilling control data collection services in the oil and gas well drilling industry, namely, gyroscopic measurement of directional drilling control data, and communication of directional drilling control data to wellbore drilling operators; Providing oil and gas well reservoir measurement services in the oil and gas well industry, namely, gyroscopic measurement of direction and orientation of wellbores in relation to oil and gas well reservoir formations; 100; 101

Case Type Service mark