A5048404699- Hydraulic Fracturing and Reservoir Analysis
- Drilling and Well Engineering
- Reservoir Engineering and Simulation Methods
- Hydrocarbon exploration and reservoir analysis
- Methane Hydrates and Related Phenomena
- Groundwater flow and contamination studies
- Enhanced Oil Recovery Techniques
- Oil and Gas Production Techniques
- Atmospheric and Environmental Gas Dynamics
- CO2 Sequestration and Geologic Interactions
- Geothermal Energy Systems and Applications
- Seismic Imaging and Inversion Techniques
- Soil and Unsaturated Flow
- Rock Mechanics and Modeling
- Spacecraft and Cryogenic Technologies
- NMR spectroscopy and applications
- Coal Properties and Utilization
- Dam Engineering and Safety
- Hydrology and Watershed Management Studies
- Phase Equilibria and Thermodynamics
- Differential Equations and Numerical Methods
- Geological and Geochemical Analysis
- Climate change and permafrost
- Geoscience and Mining Technology
- earthquake and tectonic studies
China University of Geosciences (Beijing)
2016-2025
China Energy Engineering Corporation (China)
2013-2021
China University of Geosciences
2018-2019
China Geological Survey
2018
Natural gas hydrate is an ice-like substance which sometimes called "combustible ice" since it can literally be lighted on fire and burned as fuel. characterized by widespread distribution, large reserves little pollution. This paper introduced the distributions of hydrate, properties hydrate. The main exploration methods, such geophysical geochemical have been presented. In addition, production techniques natural including depressurization, thermal stimulation chemical injection summed up....
Summary Hydraulic fracturing is an essential technology for improving reservoir permeability and enhancing gas well productivity. The experiments have confirmed that it feasible to operate hydraulic in hydrate reservoirs. Consequently, clarifying the impact of fracture on productivity has been a crucial issue developing reservoir. This study established numerical simulation model based embedded discrete (EDFM) using fractured vertical well. To verify accuracy newly-developed model, local...
The sediment of the hydrate reservoir in Shenhu Area is mainly clayey silt. Its characteristic small particles and poor cementation challenge quantification permeability during gas production. An accurate description seepage mechanism clayey-silt basis, also a difficulty, effective development South China Sea. In this study, four sets water experiments under different pressure gradients are carried out using sediments, which fourth sample was subjected to computed tomographic (CT) scans....
Natural gas hydrate is a clean and high-efficient energy resource, more than 90% of its reserves are contained in fine-grained (typically clayey silts) sediment. In this work, for the first time, micro-scale imaging performed to explore phase transition, morphology evolution fundamental characteristics (mineral compositions, pore structures seepage capacity) silt sediments. The results indicate that silts formation properties strongly depend on dominant minerals component clay-rich possesses...
A new analytical solution of fluid unsteady flow was presented for wells with finite-conductivity vertical fractures by determining impact functions fracture conductivity. Based on the solution, transient pressure distribution a fractured horizontal well multiple obtained using principle superposition. Calculation results show behavior under condition constant bottom rate. In ideal arrangement, patterns occur in order early bilinear → linear middle radial late pseudo steady state. Uneven...
• Hydrate synthesis and decomposition occur simultaneously throughout phase transition process. growth habit is not monotonous change in fractured-porous medium sandstone at different stages of transition. occurences differs from that porous matrix system. The preferential occurence hydrates fracture leads to significantly permeability changes. Natural gas hydrate, as an efficient clean energy resource, are naturally distributed medium. With the most recent development advanced micro-scale...
Summary Following the Cinco-Ley fracture model (Cinco-Ley et al. 1978) and Luo-Tang wing (Luo Tang 2015a), we developed a new fracture-unit model. By coupling Fredholm integral equation for with reservoir equation, present semianalytical method in Laplace domain, an example of Z-fold is then presented to demonstrate applicability The effects conductivity, geometry, branch length on transient wellbore pressure are discussed detail. Our work provides novel forward implement law fluid flow...
Design and optimization of well spacing is a key indicator for evaluating the development effect shale gas reservoirs. On basis theoretical understanding, after verification by analogy, numerical simulation, economic evaluation, complete workflow from inter-well interference simulation dynamic data diagnosis to multi-well production was formed. First, pressure detection boundary propagation model established simulate response degree under different connected conditions. Second, identified...
Summary This study aims to develop a semianalytical model calculate the productivity index (PI) of horizontal well with pressure drop along wellbore. It has been indicated that by introducing novel definitions horizontal-well permeability and conductivity, equation fluid flow same form as one for in varying-conductivity fracture. Thus, varying-conductivity-fracture PI can be used obtain well. Results indicate depends on interaction between penetration ratio, Reynolds number. New type curves...
Long-term development of fluvial reservoirs causes regular changes in the microscopic pore-throat structure, physical properties and phase permeability curves reservoirs, evolution history different oil layer varies. These effects can be explored using a four-dimensional (4D) model maturing field. The logging 89 sand bodies Nanpu No. 2 structure Bohai Bay Basin were restored to non-water flooded state based on changing status water flooding layers at stages levels, an original geological was...
With the extraction of hydrocarbons from reservoirs, fractures will gradually close and their permeabilities be reduced. Therefore, fracture conductivity change dynamically during hydrocarbon extraction. The main objective this study is to develop a new semi-analytical model simulate flow inside homogenous porous medium containing discretely distributed with dynamic conductivities. Based on dynamic-conductivity model, pressure pressure-derivative characteristics well or near discrete were...