A5101953280- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Coal Properties and Utilization
- Reservoir Engineering and Simulation Methods
- Seismic Imaging and Inversion Techniques
- Drilling and Well Engineering
- Machine Fault Diagnosis Techniques
- Advanced Electrical Measurement Techniques
- Civil and Geotechnical Engineering Research
- Gear and Bearing Dynamics Analysis
- Atmospheric and Environmental Gas Dynamics
- Geological Modeling and Analysis
- Rock Mechanics and Modeling
- Control Systems in Engineering
- Structural Health Monitoring Techniques
- Advanced Mathematical Modeling in Engineering
- Soil, Finite Element Methods
- Enhanced Oil Recovery Techniques
- Groundwater flow and contamination studies
- Structural Engineering and Vibration Analysis
- Geotechnical Engineering and Underground Structures
- Magnetic Bearings and Levitation Dynamics
- Manufacturing Process and Optimization
- Advanced Sensor Technologies Research
- Fault Detection and Control Systems
Research Institute of Petroleum Exploration and Development
2017-2024
China National Petroleum Corporation (China)
2019
ASM Pacific Technology (China)
2018
National Tsunami Warning Center
2015
China University of Geosciences (Beijing)
2012
Xi'an Jiaotong University
1993-2004
In order to overcome the shortcomings in traditional envelope analysis which manually specifying a resonant frequency band is required, new approach based on fusion of wavelet transform and spectrum proposed for detecting localizing defects rolling element bearings. This capable completely extracting characteristic frequencies related defect from band. Based Shannon entropy wavelet-based spectra, criterion select optimal scale monitor condition bearings also presented. Experiment results...
Vibration monitoring and diagnosis of rotating machinery is an important part a predictive maintenance program to reduce operating costs. In order improve the efficiency accuracy diagnosis, general interpolated fast Fourier transform (GIFFT) introduced in this paper. comparison present transform, new approach can deal with any type window functions possesses high robust performance, especially coping small number sampling points. Then, for purpose harmonic vibration ellipse orbit...
In order to obtain a reliable production forecast for the coal seam gas wells, history matching was usually conducted calibrate simulated water and rates observed values. This paper presents case study of vertical wells from KN Field in Surat Basin, Australia via new integrated approach. approach includes two steps, i.e., determining key parameters on basis uncertainty sensitivity analyses first, then data starting field level local area individual well level. has significant technical...
In this paper, an integrated workflow was developed to estimate coalbed methane (CBM) probabilistic resources. This captures all of the uncertainty parameters in CBM modeling, including structural surface and coal thickness modeling facies, logging density, etc. property modeling. These uncertainties were statistically analyzed quantified. Sensitivity analysis carried out rank impact these on resources, six sensitive chosen. Then, multiple stochastic models generated using aforementioned...
Abstract Interest has spread to potential unconventional shale reservoirs in the last decades, and they have become an increasingly important source of hydrocarbon. Importantly, pore structure considerable effects on storage, seepage output fluids so that reliable fractal characteristics are essential. To better understand evolution for a gas condensate reservoir their influence liquid hydrocarbon occurrences physical properties, we conducted high-pressure mercury intrusion tests (HPMIs),...
A bottom water reservoir is universal in all reservoirs the world. In exploitation process of reservoir, because complete contact with water, natural energy supply sufficient. At same time, production process, pressure drop generated by formation mainly concentrated near wellbore, which leads to a short period waterless oil production, fast breakthrough, and cut rise, seriously affects overall recovery factor increases risk filed exploitation. Since distribution an interlayer enhances...
Abstract The W block shale in the study area is located at West Canada basin and belongs to low-porosity ultra-low permeability gas-condensate reservoirs. sandwiched layers are extremely important for reservoir reconstruction. As single-layer thickness of carbonate interbeds very thin have multi-stage superposition characteristics, use conventional geostatistical inversion cannot effectively accurately predict sweet spots shale. This article uses three-dimensional probability constraints as...
A new method to build a stochastic model of as-received coalbed gas content was proposed, and the workflow is explained in detail this paper. First, dry-ash-free obtained by combining trend property residual reflect main control factor depth inherent heterogeneity coal seams. Second, ash converted from logging density with relative as an intermediate variable for overcoming shortage core data. Third, moisture built. Finally, simple arithmetic conversion. This applied Harcourt field Bowen...
After exposing dry high-volatile bituminous coal, low-volatile and anthracite to CO2, we measured the swelling properties of coal in two pressurization cycles with a maximum pressure 12 MPa. The viewpoint physicochemical interactions between CO2 was used explain these observations for first time. Due irreversibility chemical interactions, process is also irreversible. At medium high pressures, compressional environment stronger than magnitude swelling; as such, occurs at 10 increases rank,...
In this paper, a new rate decline analysis model of horizontal wells with variable conductivity and uneven distribution multiple fractures is proposed. By Laplace transformation, point source integration, superposition principle, solutions infinite in closed reservoirs are obtained. coupling Fredholm integral equation conductivity, linear equations space Gauss-Newton iteration, Duhamel convolution, Stehfest numerical inversion method used to obtain the bottom hole production solution. The...
In the process of stimulated reservoir volume tight reservoir, horizontal well can form three zones, inner zone is multistage fracturing zone, middle skin damage and outer undamaged zone. this paper, a transient test analysis model in area composite proposed. Based on Laplace transformation, point source integration, superposition principle, infinite conductivity multifracture obtained. The linear equations finite space are established by using equal conditions flow pressure at fracture...
The objective of this paper is to describe how AI (artificial intelligence) and fuzzy logic techniques can be combined implement an on-line computer control axial gear-shaving process in order improve the quality workpiece gears. basic principle correcting geometric errors gears introduced. final knowledge base obtained by iterative procedure trying expert controller, observing results then modifying rules accordingly. Inference provided a engine. Experimental showed that accuracy shaved was...