储层电阻率校正模型在低饱和度油藏油水层识别中的应用  

Application of Resistivity Correction Model in Oil and Water Layer Identification of Low Saturation Reservoir

作　　者：李郑辰[1] 燕继成[1] 石宁宁[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院

出　　处：《国外测井技术》2018年第2期17-20,2,共4页World Well Logging Technology

摘　　要：L油田S油层属构造-岩性油藏,为中孔、低渗、低饱和度油藏,油水层识别的难度较大。为解决油水层识别的难题,研究确定该油田油水层识别的主要影响因素是泥质、钙质。为消除泥质、钙质对油水层识别的影响,研制了基于并联导电原理的层状储层电阻率泥质校正模型、钙质校正模型和泥质钙质校正模型共三个电阻率校正理论模型,应用自然电位与校正后的电阻率建立油水层识别图版。实际应用效果表明,本文提出的电阻率校正模型可以提高油水层识别图版的精度。本文研究结果表明,储层电阻率校正模型是提高低饱和度油藏油水层识别精度的有效方法之一。The Sreservoir in Loilfield is a structural-lithologic reservoir, which is a medium porosity, low permeability and low saturation reservoir. It is more difficult to identify the oil-water layer. To solve the problem of oil and water layer identification,shale and calcium were determined to be the main factors affecting the identification of oil and water layer in the oil field. To eliminate the influence of shale and calcium on the identification of oil and water layers, three resistivity correction theoretical model of shale, calcium, shale & calcium in laminar reservoir were developed based on parallel conduction principle.Spontaneous potential and corrected resistivity were used to establish oil and water layer recognition chart. The result showed that the accuracy of oil and water layer interpretation chartwas improved by the resistivity correction model.The results of this study showed that reservoir resistivity correction model is one of the effective methods to improve the recognition accuracy of oil and water layer in low saturation reservoir.

关 键 词：低饱和度油藏 泥质 钙质 电阻率校正 油水层识别 

分 类 号：P618.13[天文地球—矿床学]