The Effect of Water Index on Water Cut Increasing Rate
International Journal of Oil, Gas and Coal Engineering
Volume 6, Issue 5, September 2018, Pages: 110-115
Received: Aug. 15, 2018;
Accepted: Sep. 3, 2018;
Published: Sep. 25, 2018
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Yanhui Zhang, Bohai Oilfield Research Institute, CNOOC China Limited, Tianjin Branch, Tianjin, China
Yingxian Liu, Bohai Oilfield Research Institute, CNOOC China Limited, Tianjin Branch, Tianjin, China
Hongyou Zhang, Bohai Oilfield Research Institute, CNOOC China Limited, Tianjin Branch, Tianjin, China
Chunxin Wu, Bohai Oilfield Research Institute, CNOOC China Limited, Tianjin Branch, Tianjin, China
Baolin Yue, Bohai Oilfield Research Institute, CNOOC China Limited, Tianjin Branch, Tianjin, China
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Water cut is an important evaluation index which can comprehensively reflects the development effect of a water flooding reservoir. Study the variation law of water cut is very important for reservoir development evaluation. A mathematical model for estimate water cut and water cut increasing rate was established based on Corey expression of relative permeability curve and fraction flow equation. Three parameters were proposed to quantitatively describe the character of water cut increasing rate. The three parameters have specific meanings and can describe the shape character of the relation curve between water cut increasing rate and water cut and the relation curve between water cut increasing rate and recovery percent. The effect of water index on water cut increasing rate was discussed. The relationship curve between three parameters and water index under the condition of different water oil mobility ratio was established. The result shows that when water-oil mobile ratio is greater than 10, water index has great effect on water cut increasing rate. With the increase of water index, the maximum value of water cut increasing rate gradually increase, the recovery degree when water cut increasing rate reaches the maximum value gradually increase and the water cut when water cut increasing rate reaches the maximum value also gradually increase. When water-oil mobile ratio is less than 10, water index has little effect on water cut increasing rate.
Water Cut, Water Cut Increasing Rate, Relative Permeability, Water Index
To cite this article
The Effect of Water Index on Water Cut Increasing Rate, International Journal of Oil, Gas and Coal Engineering.
Vol. 6, No. 5,
2018, pp. 110-115.
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
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M. J. Fetkovich. Decline curve analysis using type curves. Journal of Petroleum Technology. Vol. 32, No. 6, 1980, pp. 1065-77.
H. H. Liu, Z. B. Liu and X. F. Ding. A New Oilfield Production Prediction Method Based On GM(1, n). Petroleum Science and Technology, Vol. 32, No. 1, 2013, pp. 856–62.
Fan Zheyuan, Yuan Xiangchun, Liao Rongfeng and Shu Qinglin. Common problems and solutions in plotting theoretical curves of water-cut vs recovery percent of reserves. Oil & Gas Geology. Vol. 26, No. 3, 2005, pp. 384-387.
Feng Qihong, Lv aimin and Yu Hongjun. A new method for evaluating waterflooding development effectiveness. Journal of the University of Petroleum. Vol. 28, No. 2, 2004, pp. 58-60.
Zhang Hongyou, Deng Qi, Mu Chunrong, Bie Mengjun and Zhang Yanhui. A new method for computing the increased rate of water cut for waterflooding sandstone reservoirs-a correction of fractional flow equation method. China Offshore Oil and Gas. Vol. 27, No. 3, 2015, pp. 79-83.
Zhang hongyou, Deng qi, Wang meinan and Wang yuejie. New method for studying the theoretical relationship curve between the water cut and recovery percent. Fault-Block Oil & Gas Field. . Vol. 25, No. 3, 2018, pp. 345-349.
Zhang Jinqing, Yang renfeng. Proposing of theoretical water flooding curve and discussion on the relationship between theoretical water-flooding curve and production decline curve. China Offshore Oil and Gas. Vol. 30, No. 4, 2018, pp. 86-92.
Liu Yingxian. A new calculating method of theoretical decline law for water flooding sandstone reservoir. China Offshore Oil and Gas. Vol. 28, No. 3, 2016, pp. 79-83.
Chen yuanqian and Taoziqiang. Derivation of water drive curve at high water-cut stage and its analysis of upwarding problem. Fault-Block Oil & Gas Field. Vol. 4, No. 3, 1997, pp. 19-24.
Li Lili, Song Kaoping, Gao Li and Wang Pengzhen. Water Flooding Behavior of High Water-Cut Oilfield. Petroleum Drilling Techniques. Vol. 37, No. 3, 2009, pp. 91-94.
Liu Shihua, Gu Jianwei and Yang Renfeng, Peculiar water-flooding law during high water-cut stage in oilfield. Journal of Hydrodynamics. Vol. 26, No. 6, 2011, pp, 6-9.
MJ. Fetkovich. A Simplified Approach to Water Influx Calculations-Finite Aquifer Systems. Journal of Petroleum Technology. Vol. 23, No. 7, 1971, pp. 814-828.
I. Ershaghi and O. Omorigie. A Method for Extrapolation of Cut vs Recovery Curves. Journal of Petroleum Technology Vol. 30, No. 2, 1978, pp. 203-204.