Research progress and development trend of biochemical composite enhanced oil recovery technology

SHU Qinglin; HU Jing; WANG Weidong; LIN Junzhang; YU Tiantian; ZHANG Zhongping; YIN Fanghao; ZHENG Wangang

doi:10.13673/j.pgre.202406017

Youqi dizhi yu caishoulu (Sep 2024)

Research progress and development trend of biochemical composite enhanced oil recovery technology

SHU Qinglin,
HU Jing,
WANG Weidong,
LIN Junzhang,
YU Tiantian,
ZHANG Zhongping,
YIN Fanghao,
ZHENG Wangang

Affiliations

SHU Qinglin: Shengli Oilfield Company， SINOPEC， Dongying City， Shandong Province， 257000， China
HU Jing: Institute of Petroleum Engineering and Technology， Shengli Oilfield Company， SINOPEC， Dongying City， Shandong Province， 257000， China
WANG Weidong: Shengli Oilfield Company， SINOPEC， Dongying City， Shandong Province， 257000， China
LIN Junzhang: Institute of Petroleum Engineering and Technology， Shengli Oilfield Company， SINOPEC， Dongying City， Shandong Province， 257000， China
YU Tiantian: Institute of Petroleum Engineering and Technology， Shengli Oilfield Company， SINOPEC， Dongying City， Shandong Province， 257000， China
ZHANG Zhongping: Institute of Petroleum Engineering and Technology， Shengli Oilfield Company， SINOPEC， Dongying City， Shandong Province， 257000， China
YIN Fanghao: Institute of Petroleum Engineering and Technology， Shengli Oilfield Company， SINOPEC， Dongying City， Shandong Province， 257000， China
ZHENG Wangang: Institute of Petroleum Engineering and Technology， Shengli Oilfield Company， SINOPEC， Dongying City， Shandong Province， 257000， China

DOI: https://doi.org/10.13673/j.pgre.202406017
Journal volume & issue: Vol. 31, no. 5
pp. 27 – 37

Abstract

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This paper systematically investigated the progress of laboratory research and field application of biochemical composite enhanced oil recovery technology in the past 10 years in China and abroad. The synergistic mechanism between oil recovery bacteria， biosurfactants， biopolysaccharides， and chemical oil recovery agents such as surfactants， polymers， and nanoparticles was discussed in terms of improving displacement efficiency and expanding swept volume， respectively. In addition， the system construction and field application effects were analyzed. The results show that the combination of biological bacteria and their metabolites with chemical oil recovery agents has synergistic effects on interfacial tension reduction， emulsification dispersion， mobility ratio control， and viscosity reduction of heavy oil， and the field application has achieved good application results. Bacteria polymer composite profile control and microbial desulfurization and viscosity preservation technologies were explored in Shengli Oilfield， and estimated recoveries reached 9% and 10.3%， respectively. Biological ASP composite technology was applied in Daqing Oilfield， and the recovery of the pilot area has been improved to 22%. The biochemical composite enhanced oil recovery technology has great potential for application in the exploitation of difficult-to-recovery reserves in mature oilfields. The next step is to continue to deepen the synergistic mechanism between biological and chemical systems， innovate the integration and implementation process of biological and chemical oil recovery systems according to the differences between reservoir planes and inter- and intra-layers， refine the implementation plan for different development stages and reservoir spaces， and maximize the advantages of biological and chemical synergistic efficiency enhancement technologies through the three-dimensional balanced development of reservoirs to satisfy the demand for sustainable development of mature oilfields.

Published in Youqi dizhi yu caishoulu

ISSN: 1009-9603 (Print)
Publisher: Editorial Office of Petroleum Geology and Recovery Efficiency
Country of publisher: China
LCC subjects: Technology: Chemical technology: Oils, fats, and waxes: Petroleum refining. Petroleum products; Science: Geology
Website: http://yqdzycsl.cnjournals.com/pgreen/home

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