Mass Transfer Mechanisms of Weak Base Complex System in Porous Media

Abstract:

The fourteen physical models were filled with oil sand, permeability of 1000 × 10-3μm2, inner diameter of 1.8 cm, length of 80 cm. The experimental temperature is 45 °C. 0.6 PV liquid chemical flooding was injected (weak base, strong base, surfactant, polymer, weak base complex system, strong base complex system), then injection of 2.4 PV water. The concentration of chemical agent was regularly measured. The curve of comparative was designed by the relative concentration of chemical agent vs. production C/C0. The effect of the injection rate vs. a single chemical transport was analyzed in porous media, a single chemical and complex system, and strong base vs. weak base complex system about transport in porous media rule differences. The results showed that the displacement rate affected transport rules in porous media of surfactant, polymer, and strong base. The greater the displacement rate was, the sooner three kinds of chemical agents appeared. The largest the concentration was, the earlier maximum ratio concentration appeared. When the displacement rate was fixed, the maximum ratio concentration for each chemical was greater than that of a single system. For the ASP system, weak base, surfactant and polymer occur chromatography separation. chromatographic separation of strong base system was more evident than the weak base, indicating that the system suitable for weak base ASP flooding.

• Periodical: Advanced Materials Research (Volumes 354-355)
• Pages: 3-8
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.354-355.3
• Online since: October 2011
• Authors: Wei Dong Liu, Ling Hui Sun, Chun Liu Sun
• Keywords: Chromatographic Separation, Displacement Speed, Porous Medium, Transfer Rule, Weak Base

References

[1] Han Dakuang, Yang Chengzhi, Zhang Zhengqing et al Recent development of enhanced oil recovery in China, Journal of Petroleum Science and Engineering 22 (1999) 181-188

[2] Tayfun Babadagli. Development of mature oil fields – a review. Journal of Petroleum Science and Engineering 57 (2007) 221-246

DOI: 10.1016/j.petrol.2006.10.006

[3] Enrique Carrero, Nestor V. Queipo, Salvador Pintos et al Global sensitivity analysis of alkali-surfactant-polymer enhanced oil recovery processes, Journal of Petroleum Science and Engineering 58 (2007) 30-42

DOI: 10.1016/j.petrol.2006.11.007

[4] Gao Shutang, Li Huabin, Li Hongfu. Laboratory investigation of combination of alkaline-surfactant-polymer technology for Daqing EOR[J]. SPE Reservoir Engineering, 1995 ,10(3) :194～197

DOI: 10.2118/27631-pa

[5] Wang Deming, Cheng Jiecheng, Li Qun, et al. An alkaline/bio-surfactant/polymer flooding pilot in Daqing Oil Field[C]. SPE57304 ,1999 :1～12

DOI: 10.2118/57304-ms

[6] Wang Demin, Zhang Zhenhua, Cheng Jiecheng et al. Pilot test of alkaline surfactant polymer flooding in Daqing Oil Field[C]. SPE36748 ,1996 :657～670

DOI: 10.2118/57304-ms

[7] Wang Demin, Cheng Jiecheng, Wu Junzheng, et al.Summary of ASP pilots in Daqing Oilfield, SPE57288, (1999)

DOI: 10.2118/57288-ms

[8] Cheng Jiecheng et al.Field Test Performance of Alkaline Surfactant Polymer Flooding in Daqing Oil[J].Acta Petrol EI Sinica, 2002,23(6):37-41

[9] Li Huabin. New Development and Field Test of the ASP Flooding[D]. Science Press-Beijing,(2007)

[10] Xu Guoming.The Researching Problems and Solutions about the ASP Flooding[D].Oil-Gasfield Surface Engineering,2008,27(11):70-71

[11] Zhao Fuling. EOR Principle[D].China University of Petroleum Press-Dongying,(2001)

[12] Hou Jirui. Research of The combined effects of Interface and Rheological Behaviors of Compound System to the Flooding[D]. Dalian University of Technology,(2004)

[13] Liu Dongsheng et al. Scaling Characteristics of Silicon and Anti-Scaling Measures in ASP Flooding with Alkali[J].Acta Petrol EI Sinica, 2007,28(5):139-145

[14] Zhang Fusheng et al. Relation Between Composition of the Crude Oil and Demulsification of the Liquid Produced by ASP Flooding and Polymer Flooding[J].Acta Petrol EI Sinica, 2008,24(1):117-120

[15] Yang Zhenyu, Chen Guangyu. Current Status and Prospect of Combination Flooding at Home and Abroad[J].Petroleum Geology and Oilfield Development in Daqing, 2004,23(5):94-97