Qiannan Yu
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View article: Data-Enhanced Variable Start-Up Pressure Gradient Modeling for Production Prediction in Unconventional Reservoirs
Data-Enhanced Variable Start-Up Pressure Gradient Modeling for Production Prediction in Unconventional Reservoirs Open
Unconventional reservoirs are critical for future energy supply, but present major challenges for predictions of production due to their ultra-low permeability, strong pressure sensitivity, and non-Darcy flow. Mechanistically grounded phys…
View article: Hydraulic performance of a pre-aerated stilling basin: Experimental study
Hydraulic performance of a pre-aerated stilling basin: Experimental study Open
Spillway chutes are critical in dam flood control, particularly in high dams where high water heads and large discharge in narrow canyons amplify the demand for safe discharging. For large unit discharges in spillways, aeration protection …
View article: Energy Dissipation on Inclined Stepped Spillways
Energy Dissipation on Inclined Stepped Spillways Open
Stepped spillways, as highly effective energy dissipation facilities, have been widely applied in hydraulic engineering. By introducing an inclination angle to the horizontal step surface, either energy dissipation efficiency or sediment t…
View article: Research Progress and Outlook of Molecular Dynamics Simulation on Carbon Dioxide Applied for Methane Exploitation from Hydrates
Research Progress and Outlook of Molecular Dynamics Simulation on Carbon Dioxide Applied for Methane Exploitation from Hydrates Open
Research progress of carbon dioxide applied for methane exploitation from hydrates is summarized, with a focus on advances in molecular dynamics simulations and their application in understanding the mechanism of carbon dioxide replacement…
View article: Lymph-Node-Sampler-Based Nucleic Acid Detection is an Efficient Method to Diagnose and Control African Swine Fever in Pig Production
Lymph-Node-Sampler-Based Nucleic Acid Detection is an Efficient Method to Diagnose and Control African Swine Fever in Pig Production Open
African swine fever (ASF) is a highly contagious hemorrhagic and transboundary animal disease. ASF has rapidly spread to many regions of the world since the 1920s and is responsible for serious production and economic losses. Fortunately, …
View article: Numerical Simulation of Natural-Gas-Hydrate Decomposition in Process of Heat-Injection Production
Numerical Simulation of Natural-Gas-Hydrate Decomposition in Process of Heat-Injection Production Open
Heat-injection production is a common technique for gas-hydrate development, and the mechanism needs further in-depth study, particularly of the decomposition characteristics of natural-gas hydrate, which are important fundamental issues. …
View article: High-sensitivity C-reactive protein as a better predictor of post-thrombolytic functional outcome in patients with previous antiplatelet therapy
High-sensitivity C-reactive protein as a better predictor of post-thrombolytic functional outcome in patients with previous antiplatelet therapy Open
View article: Deepwater Oil-Based Drilling Fluid Systembased on Grey Wolf Optimized BP neural network
Deepwater Oil-Based Drilling Fluid Systembased on Grey Wolf Optimized BP neural network Open
In this paper, a BP neural network model with 5-9-6 structure is constructed according to various fault gases and different fault types ofWater-based drilling fluid and synthetic-based drilling fluid. While there are few studies relating t…
View article: Research Status of Deepwater Drilling Fluid on Artificial Intelligence
Research Status of Deepwater Drilling Fluid on Artificial Intelligence Open
The potential benefits of creating intelligence are huge, Oil, as the world’s main energy material, is an important energy that relates to the national economy and people’s livelihood. In recent years, with the rapid development of nationa…
View article: Characteristics of increasing displacement efficiency by surface-active polymer flooding for enhancing oil recovery
Characteristics of increasing displacement efficiency by surface-active polymer flooding for enhancing oil recovery Open
Surface-active polymer is a novel multifunctional active polymer applied for enhancing oil recovery which has both viscosity-increasing ability and surface activity. Experiments were carried out to indicate basic physicochemical properties…
View article: Experimental study on surface-active polymer flooding for enhanced oil recovery: A case study of Daqing placanticline oilfield, NE China
Experimental study on surface-active polymer flooding for enhanced oil recovery: A case study of Daqing placanticline oilfield, NE China Open
Experiments on surface-active polymer flooding for enhanced oil recovery were carried out by detection analysis and modern physical simulation technique based on reservoirs and fluids in Daqing placanticline oilfield. The experimental resu…
View article: Experimental Study on the Physical Performance and Flow Behavior of Decorated Polyacrylamide for Enhanced Oil Recovery
Experimental Study on the Physical Performance and Flow Behavior of Decorated Polyacrylamide for Enhanced Oil Recovery Open
With the rapid growth of energy consumption, enhanced oil recovery (EOR) methods are continually emerging, the most effective and widely used was polymer flooding. However, the shortcomings were gradually exposed. A novel decorated polyacr…
View article: A New Method and Application of Full 3D Numerical Simulation for Hydraulic Fracturing Horizontal Fracture
A New Method and Application of Full 3D Numerical Simulation for Hydraulic Fracturing Horizontal Fracture Open
The numerical simulation of hydraulic fracturing fracture propagation is the core content of hydraulic fracturing design and construction. Its simulation results directly affect the effect of fracturing, and can effectively guide the fract…
View article: Experimental study on performance evaluation of fracturing fluid system with enhanced oil recovery
Experimental study on performance evaluation of fracturing fluid system with enhanced oil recovery Open
In order to screen out fracturing fluid system with enhanced oil recovery performance, performance experiments of three surfactants blended with low concentration guar gum fracturing fluid used in fracturing technology of Daqing Oilfield a…
View article: Experiments on Seepage Flow Patterns in Fine Controlled Fractured Thin and Poor Reservoir
Experiments on Seepage Flow Patterns in Fine Controlled Fractured Thin and Poor Reservoir Open
Experiments on seepage flow patterns in fine controlled fractured thin and poor reservoir were carried out based on artificial core plate models. Pressure gradient distribution is revealed based on pressure data obtained by pressure transd…
View article: Experimental study on seepage flow patterns in heterogeneous low-permeability reservoirs
Experimental study on seepage flow patterns in heterogeneous low-permeability reservoirs Open
Heterogeneous artificial core plate models with low permeability are designed, made and evaluated based on similarity theory of heterogeneous reservoir with low-permeability physical simulation by artificial core plate model; then, simulat…
View article: An Improved Splitting Method of Liquid Production With in Thick Reservoir
An Improved Splitting Method of Liquid Production With in Thick Reservoir Open
Reasonable and accurate splitting method of liquid production is key to improve producing status of thick reservoir, but common methods at this stage are all kinds of problems such as limited accuracy, tedious process and workload issues, …
View article: The layered water injection research of thin oil zones of Xing Shu Gang oil field
The layered water injection research of thin oil zones of Xing Shu Gang oil field Open
As the continuous development of oil fields, the mode of oil field water injection changed from the early general water injection into layered water injection, subdividing series of strata gradually stratified water flooding of water injec…