摘要
井温测试作为诊断水力压裂缝高最有效的一种手段,在全世界得到广泛应用,由于各地储层特征千差万别所以解释方法和应用范围也各不相同。本文根据河南油田压后井温曲线特征结合储层压力和测温时间,总结了判断裂缝高度的四种方法;用停泵后不同时间录取的温度,统计出停泵时目的层温度,为压裂液的优选提供了可靠的依据;用砂层厚度与隔层厚度交会的方法统计出了安棚油田能够有效阻挡人工裂缝延伸的最小纯泥岩隔层厚度,为压裂选层、压裂施工设计、压后效果分析提供了可靠的第一手资料。
The logging temperature in fracturing wells as the effective means to determine hydraulic fracture height is applied widely all over the world. But interpretation methods of temperature curves and the range of its application are different due to different features of reservoirs in different oilfields. 4 methods to determine hydraulic fracture height are summarized according to the logging temperature curve features after fracturing combined with reservoir pressure and logging time from stopping pump in Henan Oilfields. The fractured layer temperature at stopping pump is computed with multinomial regression of the temperatures at different time from stopping pump that offers reliable data for optimizing fluid. The minimum shale thickness to prevent hydraulic fracture from stretching is summarized from the crossplot of sand thickness Vs shale thickness. The reliable practice data is provided for selecting fractured layers, making hydraulic fracturing designs and analyzing fracturing results.
出处
《工程地球物理学报》
2004年第6期480-483,共4页
Chinese Journal of Engineering Geophysics
关键词
水力压裂
压裂井温测试
隔层厚度
停泵井温
裂缝高度
hydraulic fracturing
logging fracturing temperature
shale thickness
temperature at stopping pump
hydraulic fracture height
