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Production Patterns of Eagle Ford Shale Gas : Decline Curve Analysis Using 1084 Wells

机译:Eagle Ford页岩气的生产模式:使用1084口井的下降曲线分析

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摘要

This paper analyzes and quantifies characteristic production behavior using historical data from 1084 shale gas wells in the Eagle Ford shale play from 2010 to 2014. Decline curve analysis, using Hyperbolic and Stretched Exponential models, are used to derive average decline rates and other characteristic parameters for shale gas wells. Both Hyperbolic and Stretched Exponential models fit well to aggregated and individual well production data. The hyperbolic model is found to perform slightly better than the Stretched Exponential model in this study. In the Eagle Ford shale play, about 77% of wells reach the peak production of 1644-4932 mil cubic feet per day; the production decline rate of the first year is around 70%, and over the first two years it is around 80%; shale gas wells were estimated to yield estimated ultimate recoverable total resources of 1.41-2.03 billion cubic feet ( 20 years as life span), which is in line with other studies.
机译:本文利用2010年至2014年Eagle Ford页岩气田的1084个页岩气井的历史数据对特征生产行为进行了分析和量化。使用双曲线和拉伸指数模型对下降曲线进行分析,得出了平均下降率和其他特征参数。页岩气井。双曲线模型和拉伸指数模型都非常适合汇总的和单个的井产量数据。在本研究中,发现双曲线模型的性能比拉伸指数模型更好。在Eagle Ford页岩油藏中,约77%的油井达到每天的最高产量1644-4932万立方英尺。第一年的产量下降率约为70%,头两年的下降率约为80%。页岩气井估计可产生的最终可采资源总量为141-20.3亿立方英尺(生命周期为20年),与其他研究一致。

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