Modeling dynamic stimulation of geological resources

B. W. White, O. Y. Vorobiev, S. D C Walsh

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

4 Citations (Scopus)

Abstract

Dynamic loading methods promise new modes for stimulating geological resources, as the fracture patterns they produce can be tailored by the shape and nature of the pressure pulse employed. However, selecting the type of load is a difficult task: Too slow and the stimulatory effect is reduced; too fast and the resource may be negatively impacted by wellbore damage, fines creation or permeability reduction. Moreover, modeling these systems proves challenging due to the myriad of length and timescales involved, combined with the need to accommodate both the generation of new fractures and propagation of preexisting fracture networks. This paper will discuss simulation of dynamic fracture initiation and propagation using Lawrence Livermore's GEODYN-L code. GEODYN-L is a massively-parallel multi-material Lagrangian code that includes advanced contact models to simulate nonlinear wave propagation through heavily-jointed rock masses, along with material model libraries specifically developed to capture the dynamic response of geologic media. We present results using GEODYN-L to simulate dynamic stimulation of geologic resources with pre-existing fracture networks and discuss the implications of these results for enhancing fracture networks with dynamic loading techniques. Prepared by LLNL under Contract DE-AC52-07NA27344.

Original languageEnglish
Title of host publication48th US Rock Mechanics / Geomechanics Symposium 2014
Place of PublicationUSA
PublisherAmerican Rock Mechanics Association (ARMA)
Pages414-421
Number of pages8
Volume1
ISBN (Electronic)9781634395236
ISBN (Print)978-0-9894844-1-1
Publication statusPublished - 1 Jan 2014
Externally publishedYes
EventUS Rock Mechanics / Geomechanics Symposium 2014 - Minneapolis, United States of America
Duration: 1 Jun 20144 Jun 2014
Conference number: 48th

Conference

ConferenceUS Rock Mechanics / Geomechanics Symposium 2014
CountryUnited States of America
CityMinneapolis
Period1/06/144/06/14

Cite this