A professional who directs activities concerned with providing technical services, such as electrical well logging, gun perforating, directional or caliper surveying, and cementing, acidizing, and formation fracturing, to assist in solving special oil well drilling and production problems. Responsibilities include:

• Advises drilling and production superintendenton specific servicing problems and recommends use of specialized tools, techniques, and services.
• Directs organization and training of personnel, and directly or through subordinate personnel supervises servicing operations.
• Supervises repair and maintenance of equipment.
• Keeps records of operations and prepares reports.