大洼油田水驱、聚驱压裂井选井方法研究

发布时间：2018-07-10 14:33

本文选题：大洼油田 + 水驱　；参考：《东北石油大学》2017年硕士论文

【摘要】：本文根据大洼油田的地质特征,结合水驱、聚驱的应用情况,按照地质研究和动态分析完善水驱、聚驱压裂选井选层标准,分析在不同条件压裂措施的不同效果,研究探索实施压裂选井的相关理论方法。本研究给出了措施效果与试井参数之间的相关表达式,并提出了措施选井评判方法,二者相结合可以量化措施选井标准;对于水驱油层,根据不同砂体沉积类型确定了措施井选层标准和压开厚度标准;聚驱油层合理措施时机是见效初期和低含水期,试井曲线特征是半对数中续流段加长,径向流直线段缩短,甚至消失;本研究给出了聚驱井压裂措施效果与试井参数之间的相关表达式;聚驱油层措施改造选井原则是,优选低渗、污染和流动效率低的油井,试井曲线特征是,双对数导数曲线驼峰大,半对数续流段长,直线斜率大,呈“厂”字型;聚驱油层措施改造选井选层标准是:注采系统为完善型、日产液量为递减型、剩余油为相对富集型、聚合物体系为均匀推进型和油层动用状况为不均衡型。
[Abstract]:According to the geological characteristics of Dawa Oilfield, combined with the application of water flooding and polymer flooding, according to geological research and dynamic analysis, the paper consummates water flooding and reservoir selection standards for polymer flooding fracturing, and analyzes the different effects of fracturing measures in different conditions. Research and explore the relevant theory and method of fracturing well selection. In this study, the correlation expression between the effect of measures and well test parameters is given, and the evaluation method of well selection is put forward. The combination of the two methods can be used to quantify the selection standard of wells. According to different sedimentary types of sand bodies, the selection standard and open thickness standard of measure wells are determined, the reasonable time of measures for polymer flooding reservoirs is the initial stage of effectiveness and the period of low water cut, the characteristic of well testing curve is that the continuous flow section of semi-logarithm is lengthened and the straight section of radial flow is shortened. Even disappear; this study has given the correlation expression between the effect of fracturing measures and well test parameters. The principle of well selection by polymer flooding measures is that the oil wells with low permeability, low pollution and low flow efficiency are the characteristics of well test curve. The hump of double logarithmic derivative curve is large, the semi-logarithmic continuous flow section is long, the straight line slope is large, and the shape of "factory" is adopted. The measures of polymer flooding for improving well selection and reservoir selection standard are as follows: the injection-production system is perfect, the daily liquid production is decreasing, and the remaining oil is relatively enriched. The polymer system is homogeneous propulsion and reservoir production is uneven.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE357

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