Big 3

These are 3 subject which i learn in last 5 years. Drilling — The job of the drilling engineer is to design and implement a procedure to drill the well as economically as possible. The well will confirm the presence of oil or natural gas in the location selected by the geologists and geophysicists. Drilling engineers work closely with the drilling contractor (the operator of the rig and its crews), service contractors, and compliance personnel, as well as the other members of his internal team. A drilling engineer must manage the complex drilling operation including both the people and technology. Drilling a well can often cost several million dollars and the drilling engineer has the responsibility for making certain that costs are minimized while getting all of the necessary information to evaluate the reservoir, protecting the health and safety of workers and any nearby residents, and protecting the environment. Production — Once the well is completed, the production engineer takes over. His/her job is to analyze, interpret, and optimize the performance of individual wells. The production engineer is responsible for determining how to bring hydrocarbons to the surface. The production engineer will determine the most efficient means to develop the field considering the viscosity of the crude oil, the gas-to-oil ratio, the depth and type of formation, and the project economics. The production engineer is also responsible for the developing a system of surface equipment that will separate the oil, gas, and water. As the field matures, the production engineer will be responsible for exploring additional technologies to enhance production from wells that are declining. In doing so, the production engineer will work closely with reservoir engineers and those in other disciplines to determine the optimal approach for that particular field. Reservoir — Reservoir engineers determine the fluid and pressure distributions throughout the reservoir, the natural energy sources available, and the methods most useful in recovering the maximum amount of oil or gas from the reservoir. The reservoir engineer may develop complex computer-based mathematical programs to model the fluid flow and formation pressures. Reservoir engineers are responsible for estimating the amount of oil or gas that can be recovered from a reservoir. Making good estimates of recoverable resources is crucial to a company's financial position since future recovery is a measure often used by bankers and financial analysts of a company's borrowing power and future worth.