Petroleum Engineering

The subdiscipline focused on understanding fluid flow behavior within porous rock formations, estimating reserves, and forecasting production rates using material balance equations, decline curve analysis, and numerical reservoir simulation.

The branch of petroleum engineering responsible for designing and executing the wellbore, including selecting drill bits, casing programs, drilling fluids (muds), and well trajectories to safely and efficiently reach target formations.

Tertiary recovery techniques applied after primary depletion and secondary waterflooding to extract additional oil. Common methods include CO2 injection, steam flooding, polymer flooding, and chemical surfactant injection that alter fluid properties or rock-fluid interactions.

The study of rock and fluid properties in the subsurface, typically evaluated through wireline well logs, core analysis, and formation testing. Key properties include porosity, permeability, water saturation, and lithology.

A well stimulation technique in which high-pressure fluid is injected into a formation to create fractures in the rock, which are then held open by proppant (typically sand or ceramic beads), dramatically increasing the permeability and flow rate to the wellbore.

The subdiscipline that designs and optimizes the equipment and processes used to bring hydrocarbons from the reservoir to the surface, including artificial lift systems, well completions, flow assurance, and surface separation facilities.

The fundamental equation governing the flow of fluids through porous media, stating that flow rate is proportional to permeability, cross-sectional area, and pressure gradient, and inversely proportional to fluid viscosity. It is the cornerstone of reservoir fluid flow analysis.

The practice of making detailed measurements of the geophysical properties of rock formations penetrated by a wellbore using specialized downhole instruments. Logs provide continuous data on resistivity, porosity, density, sonic velocity, and natural radioactivity.

A fundamental reservoir engineering tool that applies the conservation of mass to a reservoir system, relating cumulative production, fluid expansion, water influx, and pore volume compaction to estimate original hydrocarbons in place and predict future performance.

The process of making a drilled well ready for production, including installing casing and cement, perforating the production interval, setting tubing and packers, and installing surface flow control equipment (the Christmas tree or wellhead).