A5039172977- Enhanced Oil Recovery Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Hydrocarbon exploration and reservoir analysis
- Petroleum Processing and Analysis
- Drilling and Well Engineering
- Reservoir Engineering and Simulation Methods
- 3D Printing in Biomedical Research
- Viral Infectious Diseases and Gene Expression in Insects
- Geological Modeling and Analysis
- Oil and Gas Production Techniques
- Pancreatic function and diabetes
- Seismic Imaging and Inversion Techniques
- Protein purification and stability
- Geological formations and processes
Northeast Petroleum University
2018-2025
WuXi AppTec (China)
2023-2024
China National Offshore Oil Corporation (China)
2020
Taking reservoir rocks and fluids of the Daqing, Dagang Changqing oilfields as research objects, EOR mechanisms technical approach polymer flooding were discussed. By comparing displacement performances ordinary polymer, glycerol, in “sheet-net” structure heterogeneous weak gel at same viscosity concentration, relationship between agents performance was demonstrated, method improving effect worked out. The main mechanism to increase oil recovery is swept volume expansion water injection due...
Summary Bohai offshore oil fields have reached the stages of high and ultrahigh water content, resulting in a significant amount remaining within reservoirs after long-term waterflooding. For typical characterized by wide well spacing sparse networks, river facies composite sand bodies pose challenge. It remains unclear how configuration these affects spatial sweep characteristics injection agents, as formation distribution residual oil. This study employs seismic-guided method, integrating...
Water plugging and profile control are becoming increasingly important in water-flooding oilfields. In this study, the experiments were conducted to determine microscopic mechanisms effects of water plugging, control, 'water + control'. Initially, starch graft copolymer polymer gel used showed only slight changes viscosity. However, within 12 h, viscosities exceeded 100,000 mPa·s, which indicated that two agents had good effects. When agent was copolymer, oil recovery with 2% 0.8% higher...
In this article, we developed a new composite gel for plugging dominant fluid flow channels in offshore oilfields. The was synthesized by organic and inorganic networks interpenetrating into compact three-dimensional spatial network structure, resulting good effect. performance of the evaluated from aspects gelling characteristics microstructure, while effect through core experiments. results showed that influencing order each component on acrylamide > cross-linking agent urea initiator...
In order to explore the influence of water dilution on performance Cr3+ polymer weak gel in porous medium, performances pure solution and were studied according laboratory testing viscosity, micro-structure (polymer molecule aggregate dimension, configuration Zeta potential), seepage characteristics oil displacement effect under condition dilution. The results indicated that, after diluting by water, had an almost same but there obvious differences characteristics. Different with solution,...
The injection from a well to other wells can be difficult in extralow-permeability oil reservoirs. In order address this issue, method of cyclic huff-n-puff with surfactants based on complex fracture networks for single horizontal was proposed and then investigated terms the effects parameters recovery water-wet models. Firstly, interfacial tension (IFT) contact angle different surfactant concentrations were measured determine basic properties surfactants. Then, experiments at threshold...
Abstract Intensified fed‐batch (IFB), a popular cell culture intensification strategy, has been widely used for productivity improvement through high density inoculation followed by cultivation. However, such an strategy may counterproductively induce rapidly progressing apoptosis and difficult‐to‐sustain productivity. To improve performance, we developed novel process intermittent‐perfusion (IPFB) which incorporates one single or multiple cycles of intermittent perfusion during IFB better...
To meet the technical requirements of deep fluid diversion in Bohai oilfield, swelling property, plugging effect, transport characteristics polymer microspheres, and effect heterogeneous cores are studied this paper. There two kinds microspheres including core–shell traditional microspheres. The instruments used study include a biomicroscope, metallurgical microscope, scanning electron core displacement experimental devices. results microscopes indicated that were successfully synthesized,...
The existing plugging removal operation in JZ9-3 oilfield has the disadvantages of small amount remover, fast injection speed, and short construction time. Under condition well suction profile reversal, remover is difficult to enter low permeability part play role deep removal. In order improve effect, this paper used physical simulation method carry out experimental study mechanism analysis on effect water flooding, chemical measures multi-layer system combination model. results showed that...
The reservoir heterogeneity of Q oilfield is more severe after long-term water injection development, and flooding ineffective. In this study, the combined technologies profile control, control flooding, oil displacement were proposed to improve development effect. Then, influence well pattern type on remaining distribution, was investigated. Cr3+ polymer gel, which has an optimal gel-forming effect, used as agent. Moreover, entire molecular structure had a “network” structure. A microsphere...
Abstract Cr 3+ polymer gel has strong salt tolerance, retention capacity and reservoir adaptability. This technology obtained a significant effect of oil increasing, the economic benefits was good. In order to meet demand improving recovery M oilfield in Changqing, Seepage characteristics its mechanism were carried out. Results showed that when concentration same, viscosity molecules aggregates diameter them basic but resistance coefficient residual larger. It could be explained ability...
Abstract Polymer flooding and polymer/surfactant have achieved good efficiency in the application of conventional reservoir, but existed chemical technology cannot address issues requirements high salinity reservoir. Under condition due to increase calcium magnesium ions, increasing viscosity effect oil displacement system is lost. In order study feasibility applying nanomaterials field enhanced recovery under conditions develop a low-concentration high-efficiency system. EAPC solution has...