油田注水井能耗评价方法与应用

doi:10.13809/j.cnki.cn32-1825/te.2020.05.014

Abstract

Abstract:

In order to find the injection wells with abnormal energy consumption, the energy consumption evaluation has been carried out for them. Based on the law of energy conservation, the model of single-pump corresponding to single-well is established, and the linear relationship between input power and power consumption per unit injection rate of single wells is deduced. Therefore, the straight line intercept method and the unit consumption energy saving rate method are put forward to evaluate the energy consumption of water injection systems and injection wells respectively. The results are verified by data from some water injection systems in oilfield-A in northwest and oilfield-B in northeast China. The results show that, according to theoretical analysis and field data, there is a linear relationship between the input power and the power consumption per unit of injection of a single well. The slope and intercept of straight line reflect the energy consumption of injection system and water injection well. The evaluation results of the injection system using the linear intercept method are basically consistent with the traditional system efficiency method. In addition, the evaluation of the energy consumption of injection wells by the unit consumption energy saving rate method can help to identify the injection wells with abnormal energy consumption. Combined with the actual situation on the site, the causes can be analyzed and the corresponding measures are taken to improve the efficiency of injection system.

Key words: injection well, energy consumption evaluation, single pump single well model, linear intercept method, unit consumption energy saving rate method

CLC Number:

TE357

ZOU Yongli,DENG Zhiqiang,LI Tongxiang,HE San,LIU Hang. Energy consumption evaluation method of oilfield injection wells and its application[J].Reservoir Evaluation and Development, 2020, 10(5): 98-102.

Figures/Tables 9

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References 19

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注水系统	注水系统效率/%	直线截距/（kW·h·m^-3）	传统系统效率法评价结果	直线截距法评价结果
注水系统A1	37.58	2.207	不合格	不合格
注水系统 A2	61.77	0.506	节能	合格
注水系统A3	40.95	1.573	合格	合格
注水系统 A4	53.39	0.232	节能	节能
注水系统 A5	45.87	0.288	节能	节能
注水系统B1	44.89	0.640	合格	合格
注水系统 B2	41.28	2.001	合格	合格
注水系统B3	41.86	0.600	合格	合格
注水系统 B4	19.76	5.736	不合格	不合格
注水系统B5	27.89	2.450	不合格	不合格

注水系统	注水井	单耗节能率
注水系统A1	L61-38	-0.830 0
注水系统A2	H47-61	-1.810 2
注水系统A3	J10-55	-1.872 4
注水系统A4	H509-62	-0.745 1
注水系统A5	S16-24	-0.348 7

注水系统	注水井	单耗节能率
注水系统B1	J31-63	-6.095 4
注水系统B2	J63-11	-1.291 1
注水系统B3	Q29-25	-4.746 9
注水系统B4	J71-163	-2.244 0
注水系统B5	F43-29	-1.879 0

Energy consumption evaluation method of oilfield injection wells and its application

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