Petrel Tutorial [upd]

Every Petrel project requires a designated Coordinate Reference System to correctly position data in 3D space. Go to →right arrow Project Settings →right arrow Coordinates .

Before populating the 3D grid, continuous well log data (measured in inches) must be averaged into the cell sizes of the 3D grid (measured in meters). Use the tool.

Select the source logs you want to upscale (e.g., Gamma Ray, Porosity, Water Saturation). Choose an averaging method: Best for porosity and water saturation.

): Usually populated using the porosity-permeability relationship ( 5. Volumetrics and Uncertainty petrel tutorial

Mastering the Subsurface: A Beginner's Guide to Petrel Software

In the modern oil and gas industry, the ability to visualize, interpret, and model subsurface structures is not merely an advantage—it is a necessity. Among the software suites designed for this purpose, Schlumberger’s Petrel stands as a dominant platform. Often described as a geoscience “hub,” Petrel integrates seismic interpretation, geological modeling, petrophysics, and reservoir simulation into a single workflow. However, for new users—from graduate students to early-career geoscientists—the software’s sheer breadth can be intimidating. This essay serves as a conceptual tutorial, outlining the fundamental steps, logical workflows, and best practices for navigating Petrel’s core functionalities. The goal is not to replicate a software manual but to provide a structured cognitive roadmap for building a three-dimensional subsurface model.

: Biased petrophysical properties by your facies distribution. For example, restrict high porosity values strictly to your interpreted sand channel facies, while forcing low porosities onto shale cells. 7. Volumetric Calculations and Simulation Export Use the tool

(Imperial) units. This is critical for later reservoir simulations like Seismic Reference Datum (SRD): Set the vertical reference level for all seismic data. 2. Data Import & Management

This guide outlines the foundational steps to start your first project and build a basic static model. 1. Project Initialization

Every Petrel project begins with a blank canvas. The first practical step is creating a new project, defining a coordinate system (e.g., UTM or geographic coordinates), and establishing a working directory. Petrel handles spatial data referenced in real-world coordinates, so accuracy here is paramount. defining a coordinate system (e.g.

Petrophysical data is highly dependent on rock types; therefore, populate properties separately for each facies zone.

Digitally pick fault segments on specific Inlines, Crosslines, or random lines by clicking along the seismic discontinuities.