Device and Method for Measuring the Efficiency of Spontaneous Imbibition and Displacement in a Low-Permeability Reservoir

2021 ◽  
Author(s):  
Zhao Juan ◽  
Zhang Jian ◽  
Yang Guang ◽  
Wang Chuanjun ◽  
Zheng Xu ◽  
...  
Keyword(s):  
Spontaneous Imbibition ◽  
Low Permeability ◽  
Low Permeability Reservoir

The Influence of Dynamic Capillary Pressure on the Seepage of Ultra-Low Permeability Reservoir

2014 ◽  
Vol 7 (1) ◽  
pp. 55-63 ◽  
Author(s):  
Haiyong Zhang ◽  
Shunli He ◽  
Chunyan Jiao ◽  
Guohua Luan ◽  
Shaoyuan Mo
Keyword(s):  
Capillary Pressure ◽  
Low Permeability ◽  
Low Permeability Reservoir ◽  
Dynamic Capillary Pressure

scholarly journals Mechanism of active silica nanofluids based on interface-regulated effect during spontaneous imbibition

2021 ◽  
Author(s):  
Xu-Guang Song ◽  
Ming-Wei Zhao ◽  
Cai-Li Dai ◽  
Xin-Ke Wang ◽  
Wen-Jiao Lv
Keyword(s):  
Contact Angle ◽  
Interfacial Tension ◽  
Oil Recovery ◽  
Dynamic Contact Angle ◽  
Liquid Interface ◽  
Spontaneous Imbibition ◽  
Wettability Alteration ◽  
Low Permeability ◽  
Oil Water ◽  
Solid Liquid

AbstractThe ultra-low permeability reservoir is regarded as an important energy source for oil and gas resource development and is attracting more and more attention. In this work, the active silica nanofluids were prepared by modified active silica nanoparticles and surfactant BSSB-12. The dispersion stability tests showed that the hydraulic radius of nanofluids was 58.59 nm and the zeta potential was − 48.39 mV. The active nanofluids can simultaneously regulate liquid–liquid interface and solid–liquid interface. The nanofluids can reduce the oil/water interfacial tension (IFT) from 23.5 to 6.7 mN/m, and the oil/water/solid contact angle was altered from 42° to 145°. The spontaneous imbibition tests showed that the oil recovery of 0.1 wt% active nanofluids was 20.5% and 8.5% higher than that of 3 wt% NaCl solution and 0.1 wt% BSSB-12 solution. Finally, the effects of nanofluids on dynamic contact angle, dynamic interfacial tension and moduli were studied from the adsorption behavior of nanofluids at solid–liquid and liquid–liquid interface. The oil detaching and transporting are completed by synergistic effect of wettability alteration and interfacial tension reduction. The findings of this study can help in better understanding of active nanofluids for EOR in ultra-low permeability reservoirs.

New Expression of the Changing Stress Field in Low-Permeability Reservoir and its Application in Secondary Exploitation

2015 ◽  
Vol 33 (4) ◽  
pp. 491-514 ◽  
Author(s):  
Shuheng Du ◽  
Yongmin Shi ◽  
Xiangqian Bu ◽  
Wenqi Jin ◽  
Guoquan Mu
Keyword(s):  
Stress Field ◽  
Low Permeability ◽  
Low Permeability Reservoir ◽  
Secondary Exploitation

Optimum Development on Low Permeability Reservoir - New Phase Opportunity for Mature Badak Field

2013 ◽  
Author(s):  
Irma Hermawaty ◽  
Robhy Permana ◽  
Frans Silitonga ◽  
Andre Wijanarko ◽  
Amireno Soenoro
Keyword(s):  
Low Permeability ◽  
Low Permeability Reservoir ◽  
New Phase
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