Q油田底水油藏水平井递减规律研究

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英文篇名：Production decline of horizontal wells in bottom water reservoirs of Q oilfield 作者：杨磊 ; 刘博伟 ; 许亚南 ; 于登飞 ; 周焱斌 英文作者：YANG Lei;LIU Bowei;XU Yanan;YU Dengfei;ZHOU Yanbin;Bohai Oilfield Research Institute, Tianjin Company of CNOOC (China) Co., Ltd.; 关键词：Q油田 ; 底水油藏 ; 水平井 ; 数值模拟 ; 递减规律 英文关键词：Q oilfield;;bottom water reservoir;;horizontal well;;numerical simulation;;production decline 中文刊名：SYHN 英文刊名：Petroleum Geology and Engineering 机构：中海石油(中国)有限公司天津分公司渤海石油研究院; 出版日期：2019-01-25 出版单位：石油地质与工程 年：2019 期：v.33 基金：国家科技重大专项“海上油田丛式井网整体加密及综合调整油藏工程技术应用研究”(2011ZX05024-004) 语种：中文; 页：SYHN201901020 页数：5 CN：01 ISSN：41-1388/TE 分类号：84-87+91

摘要

为了确定底水油藏水平井自然递减规律,建立了Q油田西区稠油底水油藏开采机理模型,并给出影响因素与水平井自然递减率之间的理论图版。研究认为,底水油藏水平井开发,在低采液速度条件下,当含水率达到80%后,递减率才可能降低至20%,且当水平井控制储量采出程度达到10%后,递减率能保持为10%～20%。将理论图版与实际水平井进行比较,符合实际生产规律,这对判断油井是否正常生产及对后期产量预测有重要意义。
        In order to determine the natural production decline of horizontal wells in bottom water reservoirs,by considering geological and dynamic factors, the mechanism model of heavy oil bottom water reservoirs in western Q oilfield was established, and the theoretical chart between the influencing factors and the natural production decline rate of horizontal wells were given. The results indicate that in the horizontal well development of bottom water reservoirs, the production decline rate may be reduced to 20% when the water content reaches 80% under the condition of low fluid production speed, and the production decline rate can be maintained at 10%～20% when the controlled reserves of the horizontal well reach 10%. Through comparing the theoretical drawing with the actual horizontal well, the results conform to the actual production, which is of great significance for judging whether the oil well is in normal production and later production prediction.

引文

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