A5003302458- Hydraulic Fracturing and Reservoir Analysis
- Seismic Imaging and Inversion Techniques
- Drilling and Well Engineering
- CO2 Sequestration and Geologic Interactions
- Reservoir Engineering and Simulation Methods
- Geotechnical and Geomechanical Engineering
- Geophysical Methods and Applications
- Seismic Waves and Analysis
- Geophysical and Geoelectrical Methods
- Geothermal Energy Systems and Applications
- Seismology and Earthquake Studies
- Fluid Dynamics Simulations and Interactions
- Geological Modeling and Analysis
- Numerical methods in engineering
- earthquake and tectonic studies
- Spacecraft and Cryogenic Technologies
- Metallurgy and Material Forming
- Oil and Gas Production Techniques
- Hydrocarbon exploration and reservoir analysis
- Metal Forming Simulation Techniques
- Groundwater flow and contamination studies
- Model Reduction and Neural Networks
- Flow Measurement and Analysis
- Spectroscopy and Laser Applications
- Lattice Boltzmann Simulation Studies
Pacific Northwest National Laboratory
2016-2025
Lawrence Berkeley National Laboratory
2024
Battelle
2021
Software (Spain)
2020
Schlumberger (British Virgin Islands)
2013-2016
Terra
2014-2015
Schlumberger (United States)
2015
TerraMetrics (United States)
2015
University of Utah
2009-2012
Abstract A new algorithm is developed to improve the accuracy and efficiency of material point method for problems involving extremely large tensile deformations rotations. In proposed procedure, particle domains are convected with motion more accurately than in generalized interpolation method. This feature crucial eliminate instability extension, which a common shortcoming most methods. Also, novel alternative set grid basis functions efficiently calculating nodal force consistent mass...
Abstract Despite the wide application of hydraulic fracturing in enhanced geothermal system (EGS) development and unconventional hydrocarbon production, our understanding many factors affecting propagation fractures has relied on circumstantial evidence. This is partly due to scarcity direct observations subsurface. The EGS Collab project attempts address these issues context research by performing intermediate‐scale (∼10 m) stimulation experiments a thoroughly characterized heavily...
Note: SPE 173363 Reference EPFL-CONF-212843 Record created on 2015-10-08, modified 2016-08-09
Abstract Understanding mechanisms controlling fluid injection-triggered seismicity is key in defining strategies to ameliorate it. Recent triggered events (e.g. Pohang, Mw 5.5) have exceeded predictions of average energy release by a factor >1000x, necessitating robust methodologies both define critical antecedent conditions and thereby constrain anticipated event size. We maximum magnitudes resulting from triggering as function pre-existing stresses injection volume. Fluid experiments on...
Abstract Fluid flow through fractured media is typically governed by the distribution of fracture apertures, which are in turn stress. Consequently, understanding subsurface stress critical for and predicting fluid flow. Although laboratory‐scale studies have established a sensitive relationship between effective bulk electrical conductivity crystalline rock, that has not been extensively leveraged to monitor evolution at field scale using or electromagnetic geophysical monitoring...
Abstract Fluid flow through fractured rock systems is governed in large part by the distribution, interconnectivity, and size of fracture apertures. In‐situ stress one primary factors controlling aperture, that altered significantly during high‐pressure fluid injections or extractions. Interactions between stress, pore pressure, can result complex evolving poroelastic behavior with significant implications regarding predictability risk involved developing managing deep subsurface reservoirs...
Fracture injection/shut-in tests are commonly used to measure the state of stress in subsurface. Injection creates a hydraulic fracture (or some cases, opens preexisting fracture), and then pressure after shut-in is monitored identify closure. Different interpretation procedures have been proposed for estimating closure, sometimes yield significantly different results. In this study, direct, in-situ strain measurements observe reopening The were performed as part EGS Collab project,...
Abstract The KS reservoir is a naturally fractured, deep, tight gas sandstone under high tectonic stress. Development wells for this are of depths in excess 6,500 m TVD. Stimulation required to provide production rates that sufficiently compensate the cost drilling and completing access deep reservoir. Hydraulic fracture design execution must be optimal ensure economic production. To effectively stimulate more than 200-m thick yielding consistently performance, it critical understand...
The capability of the generalized interpolation material point (GIMP) method in simulation penetration events is investigated. A series experiments was performed wherein a shaped charge jet penetrates into stack aluminum plates. Electronic switches were used to measure time history. Flash x-ray techniques density, length, radius and velocity jet. Simulations event using Uintah MPM/GIMP code with several different models being used. predicted history for each model compared experimentally...
Abstract The geologic storage of carbon dioxide (CO2) is one method that can help reduce atmospheric CO2 by sequestering it into the subsurface. Large-scale deployment storage, however, may be accompanied induced seismicity. We present a project lifetime approach to address seismicity risk at these sites. This encompasses both technical and nontechnical stakeholder issues related spans time period from initial consideration phase postclosure. These recommendations are envisioned serve as...
Our group has recently developed StimuFrac, a nontoxic stimuli-responsive fracturing fluid consisting on CO2-reactive polymer which been shown at the lab-scale to consistently fracture rock cores significantly lower net pressures in range of representative geothermal pressure/temperature conditions. However, until now, mechanism(s) responsible for more effective fracturing, critical importance optimize performance as well strategize injection methodologies field deployment, was not...
Abstract There is accepted evidence that multistage fracturing of horizontal wells in shale reservoirs results significant production variation from perforation cluster to cluster. Typically, between 30 and 40% the clusters do not significantly contribute while majority comes only 20 30% clusters. Based on numerical modeling, laboratory field experiments, we investigate process simultaneously initiating propagating several hydraulic fractures. In particular, clarify interplay impact friction...
A dynamic instability, which is relatively unexplored in the literature despite having been long ago previously asserted to exist for any conventional nonassociated plastic flow model, illustrated by means of an example problem.This instability related a condition known as achronicity, wave speed loading greater than that elastic unloading (making it absolutely not well-studied phenomena localization and flutter).The one-dimensional problem initializes elastic-plastic half-space initially...