升平油田葡萄花油层水淹层识别及评价方法研究

针对升平油田已进入注水开发中高含水期的现状，从葡萄花油层的孔渗特征入手，总结了研究区水淹层电阻率曲线及自然电位曲线的特征，根据地层电阻率随含水饱和度的增加而降低以及自然电位曲线基线的偏移特征，结合测井曲线纵向变化形态制定了水淹层定性判别标准，在此基础上，通过建立相渗透率模型、束缚水和残余油饱和度模型、产水率计算模型等，建立了适合研究区水淹层定量评价的方法体系，并应用升29-检17井的密闭取芯资料进行了验证，测井解释结果与取芯资料及初产含水情况基本吻合。

Research on the Water-Flooded Zone Identification and Evaluation Method of Putaohua Layer in Shengping Oilfield

Against the current situation of entering middle or high water cut of Shengping oilfield explored by injection, this paper started from the porosity and permeability characters of Putaohua layer, summarized the resistivity curve and spontaneous potential curve feature of water-flooded layers in area, drew up standard to identify the water-flooded layers qualitatively combining the vertical variation of logging curves under the characteristics of formation resistivity reduce along of water saturation increase and the baseline offset of spontaneous potential curve. On this basis, this paper also established suiting area method system to evaluate water-flooded layers quantitatively, by set up the models of phase permeability, irreducible water and residual oil saturation, water production calculation etc, and verified using confined core data of Well Sheng29-J17, and the logging interpretation results coincided with the core data and watery situation in early production stage.