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A new method for evaluating the injection effect of chemical flooding

ISSN号：1673-5005
期刊名称：《中国石油大学学报：自然科学版》
时间：0
分类：TE[石油与天然气工程]
作者机构：[1]State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, China, [2]School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, Shandong, China, [3]CNOOC LTD., Tianjin Bohai Oilfield Institute,Tianjin 300452, China
相关基金：Acknowledgments The authors greatly appreciate the financial support from the National Natural Science Foundation of China （Grant No. 51574269）, the Important National Science and Technology Specific Projects of China （Grant No. 2016ZX05011-003）, the Fundamental Research Funds for the Central Universities （Grant No. 15CX08004A, 13CX05007A）, and the Program for Changjiang Scholars and Innovative Research Team in University （Grant No. IRT1294）.

作者： Jian Hou[1,2], Yan-Hui Zhang[3], Nu Lu[2], Chuan-Jin Yao[2], Guang-Lun Lei[2]

关键词：到注射率的压力的比率, RPI, 的变化评价, 注射效率, 化学, crossflow, Ratio of the pressure to the injection rate Rate of change of the RPI Injection efficiency Chemical crossflow

中文摘要：

作为一个普遍注射评估方法，然而，因为曲线形状的不引人注目的变化，霍尔阴谋分析经常没能完成需要的结果。基于累积注射体积，注射率，和注射压力，这份报纸用压力的比率建立一个新方法到注射率(RPI ) 和 RPI 的变化的率评估化学泛滥的注射效率。在 RPI 和明显的抵抗因素(明显的剩余抵抗因素) 之间的关系被获得，同样到在 RPI 和抵抗因素的变化的率之间的关系。以便在一座水库估计一个贼地区， RPI 的变化的率上的化学 crossflow 的影响被分析。新方法在 Gudong 的西方的部分成功地被使用了第 7 水库。与霍尔阴谋分析相比，它在即时注射数据解释和 crossflow 评价是更精确的。特殊， RPI 的变化的率能合适特别地被申请早缺乏的新井或变换的井浇泛滥的历史。

英文摘要：

Hall plot analysis,as a widespread injection evaluation method,however,often fails to achieve the desired result because of the inconspicuous change of the curve shape.Based on the cumulative injection volume,injection rate,and the injection pressure,this paper establishes a new method using the ratio of the pressure to the injection rate（RPI） and the rate of change of the RPI to evaluate the injection efficiency of chemical flooding.The relationship between the RPI and the apparent resistance factor（apparent residual resistance factor） is obtained,similarly to the relationship between the rate of change of the RPI and the resistance factor.In order to estimate a thief zone in a reservoir,the influence of chemical crossflow on the rate of change of the RPI is analyzed.The new method has been applied successfully in the western part of the Gudong 7th reservoir.Compared with the Hall plot analysis,it is more accurate in real-time injection data interpretation and crossflow estimation.Specially,the rate of change of the RPI could be particularly suitably applied for new wells or converted wells lacking early water flooding history.

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