From the website:
With over 30 years of experience in the industry, MS Directional is ranked as a leading independent directional drilling services company with an established presence in most major producing onshore oil and gas basins in the United States. As one of the most comprehensive oilfield service companies, our divisions provide expertise in directional planning, directional drilling, downhole performance motors, directional surveying, MWD, steering tools and downhole electric wireline.