This tutorial provides a step-by-step guide to using the Properties vs. Depth Wizard in ResFrac to calculate and visualize Shmin. It includes a review of common industry methodologies, including Eaton, Extended Eaton, and Viscoelastic Stress
Zero permeability cubes impose no-flow boundaries within a defined region of the simulation grid, approximating the drainage depletion from offset wells or stages. This document explains how to define and activate zero permeability cubes in
Wellbore drilling times allow you to introduce new wells into a simulation partway through, rather than having all wells present from the start. This document explains how to use drilling times for parent/child well modeling
Water solutes define the rheological properties of fluid additives — friction reducers, guar, cross-linked gels, tracers, and more — within ResFrac. This document explains how to configure water solutes and when to use each solute
Water banking is a constitutive relation within ResFrac’s 1D submesh framework that captures elevated water cut during early flowback. This document describes how the water bank model works and how to configure it to match
Volume to first response (VFR) and frac hit trackers provide a streamlined way to quantify hydraulic fracture crossings between wells, making it easier to diagnose well interference and calibrate frac hit behavior in ResFrac models.
Stress observation points and planes allow you to monitor stresses, strains, and displacements at specified locations throughout a ResFrac simulation, enabling direct comparison with fiber optic diagnostics and other field measurements.
Pressure dependent permeability (PDP) allows matrix permeability to vary as a function of pressure change. This document explains how reversible and irreversible PDP tables are configured in ResFrac and the primary use cases.
Proppant embedment reduces fracture conductivity as proppant grains press into fracture walls under closure stress. This document explains how to configure embedment in ResFrac using data from laboratory measurements.
Pre-existing fractures are explicitly meshed fractures that are present in the model at simulation start, rather than being propagated during hydraulic stimulation. This document covers their use cases and how to configure them in ResFrac.
The general heterogeneity option allows you to introduce spatial variability into a layer-cake static model, enabling more realistic representation of formation property variations across the simulation domain.
Fracture connection parameters control how hydraulic fractures interact when they collide — whether in virgin or depleted reservoir, or when intersecting a cased offset wellbore. This document describes the key parameters governing fracture connectivity in
Drilling multi-fractured horizontal wells off-azimuth relative to the minimum principal horizontal stress can significantly affect fracture geometry and drainage efficiency. This document explains how well orientation interacts with subsurface stress and what to expect in
Understanding how ResFrac organizes its files helps you efficiently manage simulations, locate output data, and troubleshoot issues. This guide provides an overview of how ResFrac organizes its input and output files, helping users navigate the
External fractures allow you to account for stress shadow effects from hydraulic fracture stages that lie outside the simulation grid. This document explains how to define external fractures and how the simulator uses the Sneddon
ResFrac’s economic models allow you to extend production simulation results into a full financial analysis. Results are automatically post-processed at the end of each simulation and written to a CSV file for review. This document
Damage mechanisms include various means of modifying well productivity after frac hits, including fracture damage reactions, matrix damage, water block damage, skin damage, and time-dependent proppant conductivity loss. This document describes how these mechanisms are
To specify wellbore controls in ResFrac, four types of boundary condition “sequences” are available: injection sequence, production sequence, general, and shut-in. This document outlines when each sequence type should be used and how to configure
The “black oil tracer” capability allows you to track the relative proportion of production from different facies, similar to geochemical diagnostics. This document outlines how to configure and use black oil tracers to generate exact
This course covers the DFIT interpretation procedure from the paper URTeC-2019-123. The procedure was developed as part of a collaborative industry study sponsored by a group of six operators and one service company. It is
DFIT interpretation has been a theme of the work that we’ve done within ResFrac. Our collaborative 2018 Industry Study, which culminated in one of the ‘Best of URTeC’ papers in 2019, developed significant new advances
Mark McClure’s presentation for the series of ‘Robe Talks’ organized by the HFC of the American Rock Mechanics Association, April 15, 2020.
For this Office Hours, Garrett gives an introduction to the new ‘ResFrac A to Z Guide: Continuous Improvement with ResFrac.’ This guide has a step-by-step tutorial and should be especially useful to new users. However,
Hydraulic fracture models shouldn’t be a black box. We provide a detailed technical writeup so you know what the simulator is doing and why. ResFrac implements constitutive equations for fracture transport that are valid under a
