A5081006663- Hydraulic Fracturing and Reservoir Analysis
- Hydrocarbon exploration and reservoir analysis
- Coal Properties and Utilization
- Drilling and Well Engineering
- Geoscience and Mining Technology
- Methane Hydrates and Related Phenomena
- Reservoir Engineering and Simulation Methods
- Enhanced Oil Recovery Techniques
- Rock Mechanics and Modeling
- Geological and Geophysical Studies
- Geological Studies and Exploration
- Industrial Gas Emission Control
- Particle Dynamics in Fluid Flows
- Coal Combustion and Slurry Processing
- Geomechanics and Mining Engineering
- Advanced Sensor and Control Systems
- Advanced Algorithms and Applications
- Evaluation and Optimization Models
- Environmental Quality and Pollution
- Aerosol Filtration and Electrostatic Precipitation
- Hydrology and Watershed Management Studies
- Thermochemical Biomass Conversion Processes
- Catalytic Processes in Materials Science
- Landslides and related hazards
- Safety and Risk Management
China National Petroleum Corporation (China)
2010-2025
Henan Polytechnic University
2013-2024
Jiangsu University
2016-2024
Karamay Central Hospital of Xinjiang
2024
University of Science and Technology of China
2024
Shandong University of Science and Technology
2013-2021
Ministry of Ecology and Environment
2021
Ministry of Science
2021
The University of Queensland
2019
Australian National University
2019
To investigate the dose-response relationship between cumulative dust exposure (CDE) and abnormal rate of pulmonary function in coal mixture workers. Three hundred twenty eight workers (exposed group) 169 nondust-exposed (control were recruited. Basic information data collected tests performed. Pulmonary was compared two groups after comparing smoking behaviors. indices [forced vital capacity 1 second full inspiration (FVC)%, forced expiratory volume (FEV)1%, FEV1/FVC%] among stratified by...
Abstract Coal direct (CD) chemical looping combustion (CLC) and coal gasification (CG) CLC processes are two basic approaches to the application of with coal. Based on these approaches, different combined cycle power generation systems were proposed simulated by using ASPEN Plus software. The performance those cycles was evaluated based energy exergy analyses. results indicate that circulation ratio oxygen carrier in CG‐CLC process is smaller than CD‐CLC process, but offers advantages higher...
Gas drainage for the single and low gas permeability coal seam is key technical problem hampering efficient mine without which mining safely cannot be realised in China. To solve this problem, paper presents an engineering method enhanced coalbed methane recovery based on high-pressure hydraulic flush from floor tunnels. The first step to evaluate when likelihood of outburst reaches dangerous levels according parameters (including contents, pressure, geological conditions). With these place,...
For the problem where numerous coalbed methane (CBM) stripper wells exist in China, this paper analyzes genesis of from aspects geological conditions and development technologies combined with CBM some typical blocks. A series key secondary stimulation for are put forward, including low-damage fracturing fluid preventing reservoir damages, proppants multigraded sizes supporting multilevel fractures, large-scale fracture network (FNS) improving permeability, coal measure gas increasing...
The sealing quality of the gas extraction holes determines extracted concentration. Based on this, paper reveals basic principle hole by analyzing leakage mechanism borehole. technology solid-liquid materials with three pluggings and two injections for is proposed, device material are developed. Through testing granularity distribution solid material, as well surface tension contact angle slurry, that can meet requirements accessible, sticky, anti-deformation selected. enters microcracks...
The flow regime of gas migration and production in a low-permeability coal seam includes desorption, diffusion, low-velocity nonlinear seepage, linear seepage. However, the current field test methods permeability China are all based on seepage theory, leaving out with threshold pressure gradient. Therefore, method for gradient is established this paper. First, two upward cross boreholes (the piezometric borehole extraction borehole) constructed untapped area floor drainage roadway seam....
H2S may be generated by the reactions of sulphur-alcohol and sulfoether in crude oil or sulfur-bearing minerals formation at high temperatures. Sulphate can also reduced to sulphate-reducing bacteria water conditions. Experiments show that temperature is key external factor affecting H2S. When over 100 °C, content increases about 0.03% for every 20 °C increase temperature. The rapidly with ranging between 160 180 °C. higher than speed generation decreases obviously. With addition surfactants...
The integrated fracturing and oil recovery strategy is a new paradigm for achieving sustainable cost-effective development of unconventional reservoirs. However, single type working fluid cannot simultaneously meet the different needs displacement processes. Here, we develop pH-responsive fracturing-displacement based on self-assembled micelles N,N-dimethyl oleoamine propylamine (DOAPA) succinic acid (SA). By adjusting pH fluid, DOAPA SA molecules can be switched repeatedly between highly...
CO 2 pre-injection during hydraulic fracturing is an important method for the development of medium to deep heavy oil reservoirs.It reduces interfacial tension and viscosity crude oil, enhances its flowability, maintains reservoir pressure, increases drainage capacity.Taking Badaowan Formation as example, in this study a detailed three-dimensional geomechanical model based on static data from well logging interpretations elaborated, which can take into account both vertical horizontal...
In order to address the challenges of high gas outburst in both adjacent layers and coal seam itself faced by large mining faces, a study on three-dimensional extraction from different sources at face was conducted. Based research instability failure characteristics overlying strata during face, source-separated system established. A comprehensive management model for involving sources, has been proposed. This is suitable faces where there emission complex structure seam. Through numerical...
The Beijing-Tianjin-Hebei (Jingjinji) region is the most densely populated in China and suffers from severe water resource shortage, with considerable water-related issues emerging under a changing context such as construction of diversion projects (WDP), regional synergistic development, climate change. To this end, paper develops framework to examine security for 200 counties Jingjinji these changes. Thus, county-level assessed terms long-term annual mean selected typical years (i.e., dry,...