A Method to Predict Reasonable Reserve-Production Ratio Limit for Oilfields

doi:10.7657/XJPG20200316

Abstract

Abstract:

In order to evaluate whether the reserve-production ratio of an oilfield is reasonable or not, according to the definition of reserve-production ratio,the relationship among production decline rate and liquid production, the relationship between production decline rate and watercut, the paper establishes the relationships between the reserve-production ratio and produced fluid, watercut rise and reserve-production equilibrium coefficient, respectively, and predicts the trends of reserve-production ratio in different development modes. Additionally, the paper establishes an annual reserve-production ratio formula under the ideal conditions and charts of rapid prediction of reasonable reserve-production ratio, divides the reserve-production ratio at the limit watercut into 4 categories including reasonable, relative reasonable, unreasonable and extremely unreasonable reserve-production ratio and then determines the reasonable reserve-production ratio. Applying this method into a block and assuming that other conditions remain unchanged, the reserve-production ratio is already negative when the watercut reaches 96.2%, indicating a relatively low reserve-production ratio. Finally, the reasonable reserve-production ratio is determined as 8.2, which provides new references for reasonable reserve-production ratio limit determination in oilfields and countermeasures for development plan adjustment based on the rationality evaluation of the current reserve-production status of oilfields.

Key words: reserve-production ratio, development method, prediction method, reserve-production equilibrium coefficient, decline rate, liquid production, watercut

CLC Number:

TE341

WANG Luchun, ZHAO Xin, LI Jindong, SUN Zhijie, XUE Rui. A Method to Predict Reasonable Reserve-Production Ratio Limit for Oilfields[J]. Xinjiang Petroleum Geology, 2020, 41(3): 355-358.

Figures/Tables 6

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Table 1

References 16

[1]	李春兰, 张广杰, 张雄君 . 不同类型油藏储采比变化规律[J]. 新疆石油地质, 2009,30(6):728-730.
	LI Chunlan, ZHANG Guangjie, ZHANG Xiongjun . Variation of reserve-production ratio for different types of oil reservoirs[J]. Xinjiang Petroleum Geology, 2009,30(6):728-730.
[2]	李良政, 韩进强, 陈据 . 多种水驱特征曲线法预测可采储量的选值方法[J]. 新疆石油地质, 2017,38(6):719-722.
	LI Liangzheng, HAN Jinqiang, CHEN Ju . Optimization of predicted recoverable reserves by using water drive type curves[J]. Xinjiang Petroleum Geology, 2017,38(6):719-722.
[3]	李振华, 顾乔元, 张大鹏 , 等. 塔里木油田碳酸盐岩油藏产量预测方法[J]. 新疆石油地质, 2019,40(5):583-587.
	LI Zhenghua, GU Qiaoyuan, ZHANG Dapeng , et al. Production prediction methods for carbonate reservoirs in Tarim oilfield[J]. Xinjiang Petroleum Geology, 2019,40(5):583-587.
[4]	王立军, 杨海玉, 韩军 . 油田合理储采比的确定及其影响因素[J]. 大庆石油地质与开发, 2008,27(2):64-67.
	WANG Lijun, YANG Haiyu, HAN Jun . Determination of reasonable reserve-production ratio for oilfield and the influential factors[J]. Petroleum Geology & Oilfield Development in Daqing, 2008,27(2):64-67.
[5]	夏连晶, 姜贵璞, 李鹏 . 杏北开发区不同开发模式下的合理储采比研究[J]. 石油地质与工程, 2013,27(6):68-71.
	XIA Lianjing, JIANG Guipu, LI Peng . Research on reasonable reserve-production ratio under different development modes[J]. Petroleum Geology and Engineering, 2013,27(6):68-71.
[6]	陈元千, 李剑, 雷占祥 , 等. 产量递减阶段开发指标的预测方法[J]. 新疆石油地质, 2013,34(5):545-547.
	CHEN Yuanqian, LI Jian, LEI Zhanxiang , et al. Methods for forecasting development index in production decline stage[J]. Xinjiang Petroleum Geology, 2013,34(5):545-547.
[7]	范海军 . 一种直线型产量递减分析图版及应用[J]. 新疆石油地质, 2011,32(2):185-186.
	FAN Haijun . A linear type chart for production decline analysis and its application[J]. Xinjiang Petroleum Geology, 2011,32(2):185-186.
[8]	陈元千, 唐玮 . 油气田剩余可采储量、剩余可采储采比和剩余可采程度的年度评价方法[J]. 石油学报.2016,37(6):796-801.
	CHEN Yuanqian,TANG Wei . A Annual evaluation methods for remaining recoverable reserves,remaining recoverable reserves-production ratio and remaining recoverable degree of oil and gas fields[J]. XActa Petrolei Sinica, 2016,37(6):796-801.
[9]	赵明, 罗波, 宋辉 , 等. 合理储采比在油田开发规划中的应用[J]. 西南石油大学学报(社会科学版), 2010,3(2):17-19.
	ZHAO Mingi,LUO Boi,SONG Hui.et al. Applying reasonable reserve-production ratio in oil field development planning[J]. Journal of Southwest Petroleum University(Social Sciences Edition), 2010,3(2):17-19.
[10]	蔡喜东, 高文君, 宋红霞 . Logistic和Generalized-Arc-Tangent产量递减方程理论推导[J]. 新疆石油地质, 2018,39(6):737-741.
	CAI Xidong,GAO Wenjun,SONG Hongxia. Theoretical derivation of Logistic and Generalized-Arc-Tangent production decline equations[J]. Xinjiang Petroleum Geology, 2018,39(6):737-741.
[11]	徐赢, 潘有军, 周荣萍 , 等. 油田注水开发期含水率随时间变化规律研究[J]. 岩性油气藏, 2016,28(4):127-132..
	XU Ying, PAN Youjun, ZHOU Rongping,. et al. Water cut change law with time in waterflooding oilfield[J]. Lithologic Reservoirs, 2016,28(4):127-132.
[12]	何培, 冯连勇 , WILBER T. 马塞勒斯页岩气藏单井产量递减规律及可采储量预测[J]. 新疆石油地质, 2015,36(2):249-252.
	HE Pei,FENG Lianyong,WILBERT. Production decline rule and recoverable reserves prediction of Marcellus shale gas well in a production unit,Pennsylvania,US[J]. Xinjiang Petroleum Geology, 2015,36(2):249-252.
[13]	边海光, 田作基, 童晓光 , 等. 伊拉克哈法亚油田可采储量增长因素和潜力分析[J]. 新疆石油地质, 2014,35(4):486-490.
	BIAN Haiguang,TIAN Zuoji,TONG Xiaoguang,et al. Analysis of the influencing factors of reserves growth and the potential of Halfayah oilfield in Iraq[J]. Xinjiang Petroleum Geology, 2014,35(4):486-490.
[14]	高文君, 郝巍, 盛寒 , 等. 水驱油田Arps产量递减方程渗流理论基础完善[J]. 新疆石油地质,2017,38(3):314-318.
	GAO Wenjun,HAO Wei,SHENG Han,et al. Improvement of percolation theory on Arps production decline equation in waterflooding oilfield[J]. Xinjiang Petroleum Geology, 2017,38(3):314-318.
[15]	张抗, 卢泉杰 . 中外近期油气储采比变化态势及其意义[J]. 中国石油勘探, 2015,20(1):17-23.
	ZHANG Kang,LU Quanjie. Analysis of recent changes in Chinese and foreign oil and gas reserve and production ratio[J]. China Petroleum Exploration, 2015,20(1):17-23.
[16]	曲世元, 侯吉瑞, 梁华伟 . 油田储采比影响因素分析研究[J]. 石油地质与工程, 2016,30(2):83-86.
	QU Shiyuan,HOU Jirui,LIANG Huawei. Influencing factors analysis of oil reserve-production ratio[J]. Petroleum Geology and Engineering, 2016,30(2):83-86.