International Journal of Oil, Gas and Coal Engineering
Volume 6, Issue 1, January 2018, Pages: 1-7
Received: Dec. 10, 2017;
Accepted: Dec. 21, 2017;
Published: Jan. 10, 2018
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Wang Wenjuan, Research Institute of Western South China Sea Petroleum Administrative Bureau, CNOOC Zhanjiang Branch, Zhanjiang, China
Lei Xiao, Research Institute of Western South China Sea Petroleum Administrative Bureau, CNOOC Zhanjiang Branch, Zhanjiang, China
Wang Shichao, Research Institute of Western South China Sea Petroleum Administrative Bureau, CNOOC Zhanjiang Branch, Zhanjiang, China
Tang Mingguang, Research Institute of Western South China Sea Petroleum Administrative Bureau, CNOOC Zhanjiang Branch, Zhanjiang, China
Han Xin, Research Institute of Western South China Sea Petroleum Administrative Bureau, CNOOC Zhanjiang Branch, Zhanjiang, China
Most of the water-drive oil reservoirs in the western South China Sea had stepped in the middle and high water-cut stage. By the influence of reservoir heterogeneity, fault distribution, well pattern deployment and variation of reservoir flow parameters during long-term natural water drive and water flooding, the remaining oil distribution forecast is not accurate enough, increasing the difficulty of making effective adjustment and potential tapping measures. Through years of tackling key technical problems and field practice, the detailed characterization technique of the remaining oil in matured water drive reservoir was presented. Based on water displacement mechanism, variation of relative permeability curves are derived from Zhang’s water-drive characteristic curve during long-term water displacement. In addition, dynamic monitoring data matching was adopted to improve the forecast accuracy of the remaining oil distribution in water flooding oil reservoirs. By combination of flow field, remaining oil saturation field, and remaining oil reserves abundance, comprehensive characterization of water drive dynamic state was realized. The remaining oil enriched areas were quantitatively classified into four levels of potential regions, and corresponding adjustment and potential tapping measures were proposed. This technique had been successfully applied in the middle and high water-cut oilfields in the western South China Sea, with remarkable estimated incremental oil production of approximately 204,000 m3.
Detailed Characterization of the Remaining Oil in Matured Water Drive Reservoir, International Journal of Oil, Gas and Coal Engineering.
Vol. 6, No. 1,
2018, pp. 1-7.
Hu Haiguang. Research on water displacing oil efficiency in extra-high-water-cut stage [D]. Southwest Petroleum University, 2014.
Zhang Chao, Zheng Chuanjiang, Xiao Wu, et al. Research on the influencing factors and functional mechanism of enhanced liquid result in ultra-high water cut stage-case of 74-81 unit of Es2 in the block No. 2 of Shengtuo oilfield [J]. Petroleum Geology and Recovery Efficiency, 2013, 20 (5): 88-91.
Gang Qinlin. New technology for improving water flooding effect of high water-cut oil field [M]. Petroleum Industry Press, 1999.
Wang Qunyi, Bi Yongbin, Xiu Deyan, et al. Research on reservoirs and seepage law in complex fault block oilfield at ultra-high water cut stage [J]. Special Oil & Gas Reservoirs, 2013, 20 (4): 70-73.
Han Jie, Song Xinmin, Li Jun, et al. Experimental Research on the Changes in Formation Parameters during Water Flooding for Oil Production in Fuyu Oilfield [J]. Science Technology and Engineering, 2013, 13 (14): 3846-3850.
Gao Chao, Yang Manping, Wang Gang. Evaluation of oil/water relative permeability curve feature for water-flooding reservoirs [J]. Complex Hydrocarbon Reservoirs, 2013 (1): 46-49.
Deng Yuzhen. The four dimensional model of reservoir flow field and the study of residual oil: a case study of typical long-term water-flood development in Sheng Li oilfield [M]. Petroleum Industry Press, 2010.
Wu Suying, Sun Guo, Cheng Huiming, et al. Study on the reservoir parameters variation mechanism of sandstone oil reservoir with longterm water drive [M]. Petroleum Geology and Recovery Efficiency, 1999.
Zhu Lihong, Du Qinglong, Li Zhongjiang, et al. Variation of physical characteristics and wettability of the reservoir in high water-cut stage [J]. Petroleum Exploration and Development, 2004, 31 (b11): 82-84.
Yao Tongyu. The Wettability Alteration in Oil Reservoir and Its Effect on Porous Flow Process [D]. Graduate University of the Chinese Academy of Sciences, 2005.
Ji Shuhong, Tian Changbing, Shi Chengfang, et al. New understanding on water-oil displacement efficiency in a high water-cut stage [J]. Petroleum Exploration and Development, 2012, 39 (3): 338-345.
Chen Danqing, Li Jinyi, Zhu Wensen, et al. Experimental research on reservoir parameters variation after water flooding for offshore unconsolidated sandstone heavy oil reservoirs [J]. China Offshore 0il and Gas, 2016, 28 (5): 54-60.
Zhang Jinqing. A new practical water displacement curve [J]. Petroleum Exploration & Development, 1998 (3): 56-57.
Hu Gang. Improvement and Application of Method for Prediction of Volumetric Sweep Efficiency in Water-Drive Oilfield [J]. Xinjiang Petroleum Geology, 2012 (4): 467-469.
Xie Shiwen, Zhang Wei, Li Qingming, et al. Potential tapping of remaining oil in the late stage of offshore oilfield development based on multidisciplinary integration concept: a case study of H4C thin reservoir in X3 oilfield, Pearl River Mouth basin [J]. China Offshore Oil and Gas, 2015, 27 (5): 68-75.
Wang Shengdong. Research on Predominant Flow Field and Residual Oil Distribution Considering Gravity Effect [D]. China University of Petroleum, 2007.
Zhang Qiaoliang, Jiang Ruizhong, Jiang Ping, et al. Establishment and Application of Reservoir Flow Field Evaluation System [J]. Petroleum Geology & Oilfield Development in Daqing, 2014, 33 (3): 86-89.
Lei Xiao, Zhang Qiaoliang, Luo Jihui, et al. Fine characterization technique of remaining oil after water flooding for complex fault block reservoirs in Weizhou oilfields and its application [J]. China Offshore Oil and Gas, 2015, 27 (4): 80-85, 92.
Xin Zhiguo, Jia Junshan, Sun Bo. Research on the Quantitative Determination of the Dominant Flow Field Development Stages [J]. Journal of Southwest Petroleum University: Science & Technology Edition, 2012, 34 (2): 119-124.