Polyetheramine as an alternative alkali for alkali/surfactant/polymer flooding

Wang, Zengzi; Hu, Runtao; Ren, Gaihuan; Li, Gongrang; Liu, Shangying; Xu, Zhenghe; D, Sun

doi:10.1016/j.colsurfa.2019.123820

Cited by 10 publications

(3 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Polymer flooding is one of the most widely used of these techniques. Polymers 7 , 8 can reduce the oil–water mobility ratio and increase the sweeping volume which lead to improved oil recovery out of its viscosity. Nowadays, polymers have been widely industrially used in many oil fields and have achieved certain results.…”

Section: Introductionmentioning

confidence: 99%

“…Polymer flooding is one of the most widely used of these techniques. Polymers , can reduce the oil–water mobility ratio and increase the sweeping volume which lead to improved oil recovery out of its viscosity. Nowadays, polymers have been widely industrially used in many oil fields and have achieved certain results. − However, polymers have limited viscosity, which limits their ability to increase the sweeping volume. , Simultaneously, polymers have poor shear resistance, salinity resistance, and temperature resistance, and viscosity was reduced further after injection into the reservoir.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High Blocking Capacity of Fuzzy-Ball Fluid to Further Enhance Oil Recovery after Polymer Flooding in Heterogeneous Sandstone Reservoirs

et al. 2021

View full text Add to dashboard Cite

Even after a long time of polymer flooding, over half of the crude oil is still trapped in the reservoir due to the poor plugging capacity. It has been demonstrated that fuzzy-ball fluid can be utilized as an effective plugging fluid. The idea of further increasing oil recovery by fuzzy-ball fluid following polymer flooding drew us to investigate it due to its high performance and effect. In this paper, seepage behavior experiments and parallel core displacement experiments were carried out to evaluate the plugging ability and oil displacement effect of fuzzy-ball fluid. Also, the microscopic blocking mechanism of fuzzy-ball fluid was observed. The results showed that fuzzy-ball fluid has a good plugging capability thanks to the pressure consumption and accumulation plugging mechanisms. The resistance coefficient and residual resistance coefficient of fuzzy-ball fluid are also substantially greater than those of the polymer, at 76.25–239.96 and 13.95–49.91, respectively. Due to its outstanding plugging capability, fuzzy-ball fluid can achieve complete fluid diversion, with the flow fraction of the high-permeability core reduced to nearly 0% and that of the low-permeability core increased to nearly 100%. As a result, low-permeability core oil recovery and total oil recovery both can be enhanced by 46.12–49.24 and 22.81–24.40%, respectively. A field test of fuzzy-ball fluid flooding was carried out in wells TX 1 and TX 2 which have been flooding with polymers. After the fuzzy-ball fluid was introduced, total daily oil production increased by 64.15%. Fuzzy-ball fluid can significantly boost oil recovery after polymer flooding, according to laboratory and field trials, providing a technical solution for heterogeneous sandstone reservoirs to further enhance oil recovery.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Blocking Capacity of Fuzzy-Ball Fluid to Further Enhance Oil Recovery after Polymer Flooding in Heterogeneous Sandstone Reservoirs

et al. 2021

View full text Add to dashboard Cite

show abstract

“…X-ray diffraction is applied to the analysis of whole-rock minerals and clay minerals in core samples (Wang et al, 2019). To determine the core samples by X-ray diffraction, the natural orientation sheet (N) is firstly prepared by the extraction method; i.e., start the vacuum pump, put the soaked microporous filter membrane on the funnel, pour the suspension in several times, pump the suspension in 10 min each time, remove the filter membrane when the clay membrane reaches a thickness of 30-40 μm, put the membrane on the slide backward, and put it in the culture blood to dry.…”

Section: X-ray Diffraction Analysis Methodsmentioning

confidence: 99%

Response to the Variation of Clay Minerals During ASP Flooding in the Saertu Oilfield in the Songliao Basin

Liang

Wenfu

et al. 2021

Front. Earth Sci.

View full text Add to dashboard Cite

In this paper, the variation of clay minerals and their influence on reservoir physical properties and residual oil before and after ASP flooding are analyzed. The results show that the total amount of clay minerals in reservoirs decreases after ASP flooding in the ultra-high-water-cut-stage reservoirs of the Naner Zone in the Saertu Oilfield, Songliao Basin. Therein, the illite content reduces, while the content of illite smectite mixed-layer and chlorite increases. The content of kaolinite varies greatly. The content of kaolinite decreases in some samples, while it increases in other samples. The clay minerals block the pore throat after ASP flooding. As a result, the pore structure coefficient and the seepage tortuosity increase, the primary intergranular pore throat shrinks, and the pore–throat coordination number decreases. Nevertheless, the dissolution of clay minerals reduces the pore–throat ratio and increases porosity and permeability. The variation of clay minerals after ASP flooding not only intensifies the reservoir heterogeneity but also affects the formation and distribution of residual oil. The residual oil of the oil–clay mixed adsorption state is a newly formed residual oil type related to clay, which accounts for 44.2% of the total residual oil reserves, so it is the main occurrence form of the oil in reservoirs after ASP flooding. Therefore, the exploitation of this type of residual oil has great significance to enhance the oil recovery in ultra-high-water-cut-stage reservoirs.

show abstract

Emulsification and stabilization mechanism of crude oil emulsion by surfactant synergistic amphiphilic polymer system

Zhao

Kang

Yang

et al. 2021

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Polyetheramine as an alternative alkali for alkali/surfactant/polymer flooding

Cited by 10 publications

References 58 publications

High Blocking Capacity of Fuzzy-Ball Fluid to Further Enhance Oil Recovery after Polymer Flooding in Heterogeneous Sandstone Reservoirs

High Blocking Capacity of Fuzzy-Ball Fluid to Further Enhance Oil Recovery after Polymer Flooding in Heterogeneous Sandstone Reservoirs

Response to the Variation of Clay Minerals During ASP Flooding in the Saertu Oilfield in the Songliao Basin

Emulsification and stabilization mechanism of crude oil emulsion by surfactant synergistic amphiphilic polymer system

Contact Info

Product

Resources

About