水平井钻遇储层产能预测测井评价方法

THE RESEARCH OF LOGGING EVALUATION METHOD TO FORECAST THE RESERVOIR PRODUCTIVE CAPACITY IN THE PROCESS OF DRILLING THE HORIZONTAL WELL

储层产能预测是储层评价的重要指标之一。水平井测井解释主要通过常规测井曲线与导眼井常规测井曲线对比校正技术和水平井井眼轨迹与地层穿越关系进行的 ,尽管该方法能给开发工程师提供大量井眼轨迹与地层关系的信息 ,但却很难指出水平井钻遇储层的生产油气能力如何 ,这为油田开发工作带来了困难。以常规测井资料为基础应用敏感性分析和交会图技术划分井剖面地层 ,得出了储层有效厚度 ;分析试采数据 ,统计出了归一化条件下的水平井日产油量 ,发现二者之间有良好的线性关系 ,继而建立起DS油田XX油组水平井日产油量与储层有效厚度之间的产能预测模型 ,为所研究油组油藏描述工作提供了更为可靠的水平井测井解释结论。

Reservoir productive capacity forecast is one of the important content of reservoir evaluation, horizontal well logging interpretation is mainly through the contrast corrected technique of horizontal well conventional log curve and pilot well conventional log curve, adding to the traversing relation between horizontal well track and formation. Although a large amount of information about well track and formation relation can be provided to exploitation engineers with this method, production oil gas ability of the reservoir ,in the process of drilling the horizontal well, it is difficult to be pointed out. Which brings difficulty to development of the field .in this paper, based on conventional log material, well profile is divided with the sensitivity analysis and cross plot technique, then the reservoir effective thickness is derived. At the same time,analyzing pilot production data and calculating out the horizontal well production level under the normalization condition, favorable linear relationship between them is found and productive capacity prediction model between horizontal well daily oil production and reservoir effective thickness of XX line of oils in DS oil field is set up. All the research mentioned above provides more reliable horizontal well logging interpretation to reservoir description.