SPERRY

Oil, gas, water, and geothermal well drilling services, namely, well drilling and bore hole drilling; directional drilling for oil, gas, water and geothermal well drilling; Oil, gas, water and geothermal well drilling services, namely, measurement while drilling (MWD) services

Core analysis services for oil, gas, water and geothermal well field exploration; geological surveying for oil, gas, water, and geothermal well field exploration; well logging for oil, gas, water, and geothermal well prospecting; analysis services for oil, gas, and geothermal well field services