W-H Energy Services, Inc. (W-H Energy) is a diversified oilfield service company that provides products and services used primarily for the drilling, completion and production of oil and natural gas wells. W-H Energy's operations are currently focused offshore in the Gulf of Mexico and in the North Sea, and onshore along the Gulf Coast. W-H Energy is expanding its international operations into areas such as Brazil, the Caspian Sea, Italy and the Middle East.

Since the company's formation in April 1989, it has expanded its product and service offerings through a combination of stock and asset acquisitions, internal growth and research and development, performing in the following two primary lines of business:

• Drilling-related products and services, which include logging-while-drilling (LWD), measurement-while-drilling (MWD), rental tools (including drill pipe), downhole drilling motors and drilling fluids;
• Completion and workover related products and services, which include cased-hole wireline logging and perforating, polymers and specialty chemicals and tubing;