Petrel Reservoir Engineering - RILS (Remote Instructor Led Series), Series 3

Grids for well-based studies:

• Local grid refinement
• Simple and tartan grids

Many reservoir engineering studies focus on localized regions of a reservoir around a well or group of wells. Examples are well placement, completion optimization, and workover planning studies. In this module, you learn how to build efficient well-centric simulation models. You learn how to build a separate simple grid for simulation, refine the original model resolution around the wells of interest, and speed up simulation for the local region of interest by using a sector model.

• Build a simulation grid from a fine geological grid
• Quality control of coarsened grids
• Creating completion items in wells using the automated and manual well completion design tools
• Upscaling reservoir properties

This training introduces you to the process of coarsening a fine scale grid. You learn about vertical subdivision using the Scale up structure functionality and you are introduced to the Structural gridding process used for constructing a full stair-step grid from structural frameworks. After the upgridding process, you use the Geometrical modeling functionality to quality check the coarse grid by generating coarse grid properties, such as grid cell volumes, cell inside-out, and cell angles. You also upscale the properties from the fine grid onto the coarser simulation grid using the Scale up properties functionality.

• Simulation study challenge
• Screen alternative production extension strategies
• Optimize chosen concept
• Quantify sensitivities to model uncertainty

The goal of the simulation study exercises is to give you the opportunity to apply most of what you have learned during this course in a more realistic scenario. Each exercise contains a description of the scenario and the main steps. The idea is to let you solve the designed scenario tasks by yourself. Few tips are given in each exercise to encourage you to find your own way to complete the task.