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Effects of Water Coning on the Performance of Vertical and Horizontal Wells-A Reservoir Simulation Study of Hassi R'mel Field, Algeria

机译：水锥向对水平井和水平井性能的影响—阿尔及利亚哈西拉梅尔油田的油藏模拟研究

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Generalized empirical correlations have been developedrnto predict, (1) critical oil rate, and (2) water breakthrough timernin vertical and horizontal wells. Water coning is a seriousrnproblem in many producer wells, which increases the cost ofrnproducing operations, and reduces the efficiency of therndepletion mechanism and the overall recovery.rnA numerical simulation was used to analyze the mostrnrelevant fluid and reservoir parameters that affect water coningrnusing a 3-D radial vertical well model and a 3-D Cartesianrnhorizontal well model. The method of determining the averagernoil column height below perforations at breakthrough (hwb),rnwas developed from a stepwise procedure. First, a number ofrnsimulation runs was made to investigate the coningrnperformance at different reservoir and fluid properties for bothrnvertical and horizontal wells. Then, for each simulation run,rnwater oil ratio (WOR) was plotted against of average oilrncolumn height below perforations (hbp), on a semi-log scale,rnfrom which (hwb) was determined. Once the (hwb) data wasrnobtained for all the simulation runs, regression analysis wasrnthen used to define the relationship between (hwb) and variousrnreservoir and fluid properties.rnAn extensive parametric sensitivity analysis of waterrnconing was made to provide data for developing a predictiverncorrelation of calculating breakthrough time and breakthroughrnheight as a function of various reservoir and fluid properties.rnThe simulation outputs are used to develop empirical waterrnconing correlations to predict critical oil rate, and waterrnbreakthrough time for vertical and horizontal wells. Thernparameters were grouped together based on the basic flowrnequations and the grouping was confirmed by regressionrnanalysis. Several field examples from CTH1 area of HassirnR’mel field in Algeria will be discussed.
机译：已经开发了广义的经验相关性来预测（1）临界油率，和（2）垂直井和水平井的水突破时间。在许多生产井中，水锥化是一个严重的问题，这增加了生产作业的成本，并降低了消耗机理的效率和整体采收率。数值模拟被用来分析与水有关的最相关的流体和储层参数，这些参数影响了3-D渗水。径向垂直井模型和3-D笛卡尔水平井模型。确定钻头在穿透孔以下的平均高度的方法是逐步进行的。首先，进行了许多模拟实验，以研究垂直井和水平井在不同储层和流体性质下的凝结性能。然后，对于每个模拟运行，以半对数标度绘制了相对于穿孔以下的平均油柱高度（hbp）的净油比（WOR）。一旦获得了所有模拟运行的（hwb）数据，便使用回归分析来定义（hwb）与各种储层和流体性质之间的关系。-进行了广泛的水锥度参数敏感性分析，以提供数据，以建立与计算突破量的预测相关性时间和穿透高度随各种油藏和流体性质的变化而变化。模拟输出用于建立经验水锥相关性，以预测临界油率以及垂直和水平井的突水时间。根据基本流量方程将这些参数分组在一起，并通过回归分析确认分组。将讨论阿尔及利亚HassirnR’mel油田CTH1地区的几个油田实例。

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