A5078651763- Hydraulic Fracturing and Reservoir Analysis
- Hydrocarbon exploration and reservoir analysis
- Atmospheric and Environmental Gas Dynamics
- Reservoir Engineering and Simulation Methods
- Drilling and Well Engineering
- CO2 Sequestration and Geologic Interactions
- Enhanced Oil Recovery Techniques
- Geological Studies and Exploration
- Oil and Gas Production Techniques
- Geological Modeling and Analysis
- Groundwater flow and contamination studies
- Geological and Geophysical Studies
- Petroleum Processing and Analysis
- Mindfulness and Compassion Interventions
- Geochemistry and Geologic Mapping
- Minerals Flotation and Separation Techniques
- Methane Hydrates and Related Phenomena
- Geotechnical and Geomechanical Engineering
- Water Quality Monitoring and Analysis
- Constraint Satisfaction and Optimization
- COVID-19 and Mental Health
- Seismic Imaging and Inversion Techniques
- Advanced oxidation water treatment
- Cardiac Health and Mental Health
- Fire dynamics and safety research
National Energy Technology Laboratory
2020-2025
China Earthquake Administration
2024
Sinopec (China)
2007-2024
Zhongnan Hospital of Wuhan University
2024
Wuhan University
2024
Defense Logistics Agency
2023-2024
China University of Petroleum, East China
2024
Leidos (United States)
2021
Research Institute of Petroleum Exploration and Development
2021
Oak Ridge Associated Universities
2020
Barite scaling during the low-flow, shut-in period in hydraulic fracturing operations shale gas production has been intensively studied, but stimulation periods when large volumes of water are injected at high flow rates mostly overlooked. Due to variable nature injections, kinetics precipitation and morphology precipitated scale minerals vary due different solute concentrations influences on fluid–rock interactions. stages was studied using flow-through experiments with fractured Marcellus...
This paper describes a new modeling framework for microscopic to reservoir-scale simulations of hydraulic fracturing and production. The approach builds upon fusion two existing high-performance simulators behavior: the GEOS code hydromechanical evolution during stimulation TOUGH+ multi-phase flow are informed by experimental studies at laboratory scale incorporate important micro-scale mechanical processes chemical reactions occurring within fractures, shale matrix, fracture-fluid...
Natural gas extracted from tight shale formations, such as the Marcellus Shale, represents a significant and developing front in energy exploration. By fracturing these formations using pressurized fluid, previously unobtainable hydrocarbon reserves may be tapped. While pursuing this resource, hydraulic operations leave chemically complex fluids formation for at least two weeks. This provides substantial opportunity fluid (HFF) to react with reservoir temperature pressure. In study, we...
The properties of aggregates significantly affect the demulsification efficiency within electrocoagulation reactor. This paper aims to explore aggregate including particle size, strength factor (Fs), and recovery (Fr). experiments were carried out using aluminum-aluminum electrodes. experimental results indicate that breakage time did not change Fs much but was positively correlated with Fr. When current increased from 0.75 A 1.0 A, experienced a decrease 12.42%, while Fr exhibited an...
Recent studies have shown that large language models' (LLMs) mathematical problem-solving capabilities can be enhanced by integrating external tools, such as code interpreters, and employing multi-turn Chain-of-Thought (CoT) reasoning. While current methods focus on synthetic data generation Supervised Fine-Tuning (SFT), this paper the complementary direct preference learning approach to further improve model performance. However, existing algorithms are originally designed for single-turn...
Analysis of Stress Sensitivity and Its Influence on Oil Production From Tight Reservoirs Qun Lei; Lei Chinese Academy Sciences Search for other works by this author on: This Site Google Scholar Wei Xiong; Xiong Jiangru Yuang; Yuang Research Inst. Petr. Expl/Dev Yuquan Cui; Cui PetroChina Co. Ltd. Yu-Shu Wu Lawrence Berkeley Laboratory Paper presented at the Eastern Regional Meeting, Lexington, Kentucky USA, October 2007. Number: SPE-111148-MS https://doi.org/10.2118/111148-MS Published: 17...
Early detection of CO2 leakage through monitoring is important to ensure long-term safety for geologic carbon storage (GCS). A geochemically informed leak (GILD) model has been developed groundwater chemistry at injection sites. The GILD integrates a geochemical that simulates fluid changes in events and Bayesian belief network (BBN) evaluates observations identify leakages. implemented using Geochemists' Workbench assess as result small an above-zone interval (AZMI) formation with varying...
Barite scaling is a common problem in the shale gas industry. precipitation due to rock-fluid interactions has been studied intensively static and flow-through experiments, but impact of flow pathway geometry on barite remains question. The complex fracture passages can lead local concentrated geochemical interactions, resulting spatially variable distribution. In this study, designed patterns with channels holes were milled two Marcellus cores represent main pathways, where slow travels...
Hydraulic fracturing of shale reservoirs resulted in significant opportunities for increased oil and gas production the United States. Rock–fluid interactions can cause mineral dissolution precipitation reactions that lead to permeability changes matrix, which ultimately may affect transport pathways hydrocarbon production. Understanding distribution secondary precipitates, such as barite Fe(III) (hydro)oxides, cation leaching at rock–fluid interface is an important step further investigate...
Produced waters from unconventional Marcellus Shale gas wells have anomalously high barium (Ba) concentrations and yield some of the isotopically heaviest Ba measured to date. Experiments were conducted constrain source in these fluids controls on barite (BaSO4) precipitation dissolution oil wells. simulating acidizing stage evaluated solubility pure drilling mud 2 M HCl at 80 °C for periods 2, 6, 48 h resulted <0.01% with no appreciable change δ138Ba (138Ba/134Ba normalized NIST standard...
During geophysical surveys, water layers may interfere with the detection of oil layers. In order to distinguish between and in porous cracked media, research on properties cracks, layers, their relation pulsed neutron logging characteristics is essential. Using Hudson's crack theory, we simulated a medium different parameters corresponding well log responses. We found that, medium-angle (40°–50°) thermal count peak value higher more sensitive than those low-angle high-angle environments;...
Fine-grained control over large language models (LLMs) remains a significant challenge, hindering their adaptability to diverse user needs. While Reinforcement Learning from Human Feedback (RLHF) shows promise in aligning LLMs, its reliance on scalar rewards often limits ability capture preferences real-world applications. To address this limitation, we introduce the Directional Preference Alignment (DPA) framework. Unlike scalar-reward RLHF, DPA incorporates multi-objective reward modeling...
Earthquakes with large magnitude induce massive post-seismic deformation lasting for months to years. Modeling the gains invaluable insights understanding physics of fault zone and lower crustal rheology. However, observed is originated from sources variant mechanisms, including afterslip, poroelastic rebound, viscoelastic relaxation, which occur at different spatial temporal scales. Decomposing interpreting resulted deep afterslip relaxation especially remains challenging. The 2021 Mw 7.4...