A5100646158- Enhanced Oil Recovery Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Petroleum Processing and Analysis
- Tunneling and Rock Mechanics
- Geomechanics and Mining Engineering
- Phase Equilibria and Thermodynamics
- Drilling and Well Engineering
- Hydrocarbon exploration and reservoir analysis
- Geotechnical Engineering and Underground Structures
- Tribology and Wear Analysis
- Surfactants and Colloidal Systems
- Oil and Gas Production Techniques
- NMR spectroscopy and applications
- Remote Sensing and LiDAR Applications
- Infrastructure Maintenance and Monitoring
- Geotechnical and Geomechanical Engineering
- Geophysical Methods and Applications
- Geoscience and Mining Technology
- Offshore Engineering and Technologies
- Structural Integrity and Reliability Analysis
- Automated Road and Building Extraction
- Civil and Geotechnical Engineering Research
- Asphalt Pavement Performance Evaluation
- Lubricants and Their Additives
- Tribology and Lubrication Engineering
Chuzhou University
2024
Sinopec (China)
2024
Lanzhou University of Technology
2022
China University of Mining and Technology
2021
Research Institute of Petroleum Exploration and Development
2017-2020
China University of Petroleum, East China
2015
Huainan Mining Industry Group (China)
2009-2010
A gel system composed of acrylamide (AM), N,N'-methylenebisAM (BIS), and ammonium persulfate ((NH4)2S2O8) was developed applied extensively in reservoirs to reduce water cut increase oil production mature fields. However, this suffers from thermal stability loss syneresis at high temperatures that reduces its ability control flow. It has been widely accepted the can be explained via three aspects: rupture polymer chains, breakage cross-linker hydrolysis polymer. The mechanism hydrogel...
A zwitterionic surfactant, hexadecyl hydroxypropyl sulfo betaine, was examined for its ability to stabilize supercritical CO2 (SC-CO2) foam, with the goal of improving oil recovery from mature fields high temperatures and salinities. Herein, we present a detailed investigation effect salinity on SC-CO2 foam. First, bulk foaming capacity assessed betaine surfactant different salinities, using high-temperature, high-pressure (HTHP) foam generation apparatus. The rheology, flow resistance,...
In order to improve the CO2 foam stability at high temperature and salinity, hydrophilic silica nanoparticles (NPs) were added into a dilute zwitterionic surfactant solution stabilize supercritical (SC-CO2) foam. present paper, foaming capacity of SC-CO2 investigated as function NP concentration elevated temperatures pressures. It was observed that drainage rate initially fast then became slower with NPs adsorption gas-liquid interface. The improved attributed enhanced disjoining pressure...
A temporary plugging agent based on polymer gel was successfully prepared for in acidizing treatment. The gelation time, gel-breaking viscosity changes, capacity, and permeability recovery capacity were investigated. Increasing the cross-linker concentration reduced time of agent, but caused difficulties breaking agent. Ammonium persulfate (APS) could be driving force differences between Additionally, increasing APS made break easily. Viscosity changes are most important feature a According...
Abstract The performance of polymer gel to plug a hydraulic fracture is greatly affected by its distribution patterns and gelling effect. In this study, the migration plugging agent in after were investigated physical simulation experiments. addition, mechanism detail. results study revealed that flowing behavior solution can be divided into three streams: flow, leak off matrix flow. Such distributed different gelling: clusters fracture, layer on surface, dispersed lumps pores-throats....
Fracturing roofs to maintain entry (FRME) is a novel longwall mining method, which has been widely used in China, leading new revolution. In order research the change law of side abutment pressure and movement overlying strata when using FRME, monitoring device, namely, flexible detection unit (FDU), developed applied field. The results show that compared with head (also called non-splitting entry), peak value lateral tail termed splitting entry) reduced by 17.2% on average, fluctuation...
The extraction of urban road features provides indispensable support to numerous high-accurate applications such as autonomous driving and high-definition mapping. However, approaches mainly focus on connectivity, while often overlooking finer details constituent structures. Data that captures details, LiDAR, may not be always readily available. This article proposes an operational framework for mapping fine-grained by integrating open-source data (OSD). geometric measurement method is...
Abstract In order to study the seal design problem of piston rings in Stirling engine, on basis filling PTFE with Nano-SiO 2 and POB preparing GCr15 contact surface square texture by HM20-I laser marking machine, experiments were carried out LSR-2M wear tester indirect weighing in-situ observation methods. Optical microscope (OM) scanning electron (SEM) used observe evolution /POB-PTFE composites’ transfer film surface. The results showed that would shorten running-in transitionary periods...
Stress concentration of the crossing oil pipeline is main reason for failure. Currently, study on stress analysis large excavation river seldomly done. To ensure safe operation pipeline, it necessary to analyze distribution under operating conditions. In this paper, we do numerical simulation a certain with method using software CAESAR II, come and check whether can meet strength requirements. Through engineering case study, concluded that maximum generated at saddle weight conditions means...