42 Engineering services in the oil, gas, and energy industries; Engineering design; Mechanical engineering services; Engineering consulting services provided to others in the oil, gas, and energy industries; Providing technical research services to others; Development of new technology, products, and processes primarily for use oil and gas drilling, well construction, and sand control; Research and development of new technology, products, and processes for others; Preparation of engineering reports and design drawings; Development of new technology, products, and processes in the oil, gas, and energy industries, and consultation related thereto; Providing engineering consulting services in the sand control industry; Engineering consulting in the field of well bore sand control; Providing slot width modeling and testing services in the sand control industry; Providing flow control testing services in the sand control industry; Providing slot density testing and calculations in the sand control industry; Engineering, consulting, and testing services in the oil, gas, and energy industries; Providing testing and analysis services with respect to finite elements and laser particle size; Research and development services in the oil, gas, and energy industries; Testing analysis and evaluation of tools and processes used in the oil, gas, and energy industries; Providing sand control design and review services, namely, modeling of particle size distribution and flow testing services; Providing sand control and core flow testing services in the oil, gas, and energy industries; Providing thermal technical design and review services, namely, using simulation tools and models to analyze steam distribution; Preparing and providing reports and recommendations for slot specifications required for effective sand control in the oil, gas, and energy industries; Developing slot width models in the oil, gas, and energy industries; Development of engineering models and programs designed to achieve optimal slot configuration and optimal steam distribution profiling in oil, gas, and energy industries; Design of slotted liners, custom built tools for horizontal drilling, horizontal completion tools and slotting equipment for use in the oil, gas, and energy industries