Hui-Hai Liu

Hui-Hai Liu

Staff Scientist, Lawrence Berkeley National Laboratory (Lbnl), Earth Sciences Division (Esd), Ms 90r1116, 1 Cyclotron Road, Berkeley, Ca 94720-8126. E-Mail:,

Direct Impact

Concepts for which Hui-Hai Liu has direct influence:

matrix diffusion
tensile strength
fractured rock
unsaturated flow
tracer transport
active region model
deformable soils

External impact

Concepts related to the work of other authors for which Hui-Hai Liu has influence:

unsaturated soils
yucca mountain
water content
coating layer
organic matter
salt precipitation
mass transport

Prominent publications by Hui-Hai Liu

KOL-Index: 42 As a result of small pore sizes and property heterogeneities at different scales, flow processes and the related physical mechanisms in shales can be dramatically different from those in conventional gas reservoirs. To accurately capture the “unconventional” flow and transport in shales requires reevaluation of dominant physics controlling flow in shales, as well as innovative hardware ...
Known for
Complex Heterogeneous Shale Matrix | “unconventional” Flow | Small Pore Sizes | Innovative Hardware Technologies
KOL-Index: 29 Summary Prediction of well production from unconventional reservoirs is often a complex problem with an incomplete understanding of physics and a considerable amount of data. The most effective way for dealing with it is to use the gray-box approach that combines the strengths of physics-based models and machine learning (ML) used for dealing with certain components of the prediction where ...
Known for
Potential Limitations | Physics-Constrained | Production Unconventional | Efficient Gridless Method
KOL-Index: 21 Understanding porous media properties and their scale dependence have been an active subject of research in the past several decades in hydrology, geosciences and petroleum engineering. The scale dependence of flow in porous media is attributed to small- and large-scale heterogeneities, such as pore size distribution, pore connectivity, long-range correlations, fractures and faults ...
Known for
Small Scales | Long-Range Correlations | Theoretical Scale-Dependent Permeability Models | Studied Pore-Networks
KOL-Index: 20 Matrix diffusion is an important mechanism for solute transport in fractured rock. We recently conducted a literature survey on the effective matrix diffusion coefficient, D(m)(e), a key parameter for describing matrix diffusion processes at the field scale. Forty field tracer tests at 15 fractured geologic sites were surveyed and selected for the study, based on data availability and ...
Known for
Factor Effective | Differing Degrees | Contaminant Remediation | Field Dme
KOL-Index: 19 In a shale gas reservoir, the rock matrix has a relatively large porosity and gas in place, but extremely low permeability. Thus, the rock matrix is a bottleneck for shale gas flow from the reservoir to hydraulic fractures and then to the production well. We speculate that the next big thing after hydraulic fracturing for unconventional resources development is to enhance the matrix ...
Known for
Measure Permeability | Point Approach | Shale Gas Reservoir | Liu
KOL-Index: 18 Injectivity is critical for injection of CO2 into saline aquifers. Previous model studies indicate that injectivity can be impaired by salt precipitation near the injection well. These results are largely determined by the relationships between permeability and salt precipitation. In this study, we develop a new relationship for permeability change owing to salt precipitation near a CO2 ...
Known for
Two-Phase Flow | Relationships Permeability | Pore-Size | Developed Methodology
KOL-Index: 17 The accuracy in modeling coupled processes in a clay/shale repository is largely determined by the validity of the constitutive relationships and related parameter values. As an attempt to more accurately model the Excavation Damaged Zone (EDZ) formation and associated hydromechanical behavior induced by excavation in clay/shale, a recently developed stress-strain relationship (a twopart ...
Known for
Tphm Formulations | Zone Edz | Excavation Clay | Hydromechanical
KOL-Index: 17 We performed numerical simulations of groundwater flow and radionuclide transport to study the influence of several factors, including the ambient hydraulic gradient, groundwater pressure anomalies, and the properties of the excavation damaged zone (EDZ), on the prevailing transport mechanism (i.e., advection or molecular diffusion) in a generic nuclear waste repository within a clay-rich ...
Known for
Excavation Damaged Zone | Prevailing Transport Mechanism | Steady-State Flow Systems | Clay-Rich Formation
KOL-Index: 17 Argillaceous formations are being considered as host rocks for geologic disposal of nuclear waste in a number of countries. One advantage of emplacing nuclear waste in such formations is the potential self-sealing capability of clay due to swelling, which is of particular importance for the sealing and healing of disturbed rock zones (DRZ). It is therefore necessary to understand and be able ...
Known for
Waste-Emplacement Tunnels | Modeling Method | Host Clay Rock | Diffuse Layer Theory
KOL-Index: 17 This paper presents modeling analyses of long term infiltration and tracer tests in fractured tuffs at Yucca Mountain, NV, USA. The experiments were conducted on a 20m thick tuff section in a flyover formed by two exploratory tunnels. The infiltration test last for 870days. Both measured infiltration and seepage show significant temporal and spatial variations. The tracer test used inorganic ...
Known for
Modeling Approaches | I− | Fracture–matrix Interaction | Heterogeneous Hydraulic Properties

Staff Scientist, Lawrence Berkeley National Laboratory (LBNL), Earth Sciences Division (ESD), MS 90R1116, 1 Cyclotron Road, Berkeley, CA 94720-8126. E-mail:,

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