渤海油田水平井出水规律特征及影响因素
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摘要
针对渤海油田水平井高含水问题,以某典型高含水油田为例,统计121口水平生产井,采用单井含水率曲线法进行渤海油田水平井出水规律及关键影响因素研究。结果表明,渤海油田水平井出水规律主要归纳为凸型、直线型、S型和凹型等4种类型,以凸型为主。从影响出水的地质油藏因素、工程因素和开发生产因素出发,采用灰色关联度分析法,深入分析了避水高度、渗透率级差、油水黏度比、采液强度、水平段长度等关键影响因素对出水的重要性等级,同时考虑数据处理方法的影响,明确了不同出水规律类型的主控因素及成因。研究成果可指导新井控水设计,为水平井稳油控水措施的制定提供依据,对进一步提高水平井开发效果意义重大。
Aiming at the problem of high water cut in horizontal wells of Bohai Oilfield, taking one typical high water-cut oilfield as an example, the single well water cut curve method was used to study the regularity and key influencing factors of horizontal wells in Bohai Oilfield by the statistics of 121 horizontal production wells. The results show that the water production law of horizontal wells in Bohai Oilfield can be divided into four types: S type, concave type, convex type and straight type, and convex type is the main type. Based on the factors of geological reservoir, engineering and production, which affect water production, grey relational analysis method was used to analyze the importance degree of key influencing factors such as water avoidance height,permeability ratio, oil-water viscosity ratio, fluid producing intensity and horizontal section length. Considering the influence of data processing methods, the main controlling factors and causes of different types of wells were clarified. The research results can guide the water control design of new wells, and provide basis for the study of stabilizing oil and controlling water in horizontal wells. It has an important significance for further improving the development effect of horizontal wells.
Aiming at the problem of high water cut in horizontal wells of Bohai Oilfield, taking one typical high water-cut oilfield as an example, the single well water cut curve method was used to study the regularity and key influencing factors of horizontal wells in Bohai Oilfield by the statistics of 121 horizontal production wells. The results show that the water production law of horizontal wells in Bohai Oilfield can be divided into four types: S type, concave type, convex type and straight type, and convex type is the main type. Based on the factors of geological reservoir, engineering and production, which affect water production, grey relational analysis method was used to analyze the importance degree of key influencing factors such as water avoidance height,permeability ratio, oil-water viscosity ratio, fluid producing intensity and horizontal section length. Considering the influence of data processing methods, the main controlling factors and causes of different types of wells were clarified. The research results can guide the water control design of new wells, and provide basis for the study of stabilizing oil and controlling water in horizontal wells. It has an important significance for further improving the development effect of horizontal wells.
引文
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[12]张希,唐红涛,李瑞莎,等.基于灰色关联度的鲜水河断裂活动特征与大震关系研究[J].地震研究,2012,35(4):500-505.
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[2]葛丽珍.秦皇岛32-6油田出水规律及控水稳油地质研究[D].东营:中国石油大学(华东),2007.
[3]曹立迎,蔺高敏,宋传真,等.底水油藏水平井水淹规律经验模型[J].断块油气田,2012,19(3):323-326.
[4]毕永斌,张梅,马桂芝,等.复杂断块油藏水平井见水特征及影响因素研究[J].断块油气田,2011,18(1):79-82.
[5]侯玮,郭杰.复杂断块油藏单井水窜动态诊断与综合识别[J].断块油气田,2011,18(6):772-775.
[6]张锋利,郑春峰,刘跃忠,等.中心管采油技术在水平井开发底水油藏中的应用[J].特种油气藏,2013,20(4):144-146.
[7]唐韵.CB油田水平井出水特征及影响因素研究[J].复杂油气藏,2015,8(3):59-62.
[8]冉林.底水油藏水平井见水规律及ICD控水方法研究[D].成都:西南石油大学,2011.
[9]于蓬勃.底水稠油油藏水平井见水特征及影响因素[J].天然气与石油,2015,33(5):36-40.
[10]张贤松,丁美爱,张媛.水平井水窜类型识别方法及适应性分析[J].特种油气藏,2012,19(5):78-81.
[11]李俊键,姜汉桥,李杰,等.水平井水淹规律影响因素的不确定性及关联分析[J].油气田地面工程,2008,27(12):1-3.
[12]张希,唐红涛,李瑞莎,等.基于灰色关联度的鲜水河断裂活动特征与大震关系研究[J].地震研究,2012,35(4):500-505.
[13]李炳军,朱春阳,周杰.原始数据无量纲化处理方法对灰色关联序的影响[J].河南农业大学学报,2002,36(2):199-202.