“三低”储层热中子成像测井评价剩余油饱和度技术研究

Study on Evaluation of Residual Oil Saturation in“ Three Low”Reservoir by Thermal Neutron Imaging Logging

基于吐哈油田"三低"储层岩心孔隙度实验数据建立了热中子成像孔隙度模型。在水淹层定性识别方面,根据吐哈油田"三低"储层地质特征和流体特点,形成了敏感曲线法、核谱成像识别法、图版半定量法识别技术。吐哈油田测井实例表明,以上评价技术对于识别评价油水层效果良好。

Based on the experimental data of core porosity of “ three low” reservoirs in Tuha oilfield, the thermal neutron imaging porositymodel was fitted. In the qualitative identification of water flooded layer, according to the geologic feature of “ three low” reservoir and thefluid characteristics in Tuha oilfield, the sensitive curve method, the nuclear spectrum imaging recognition method and the chart methodsemi quantitative recognition technology were established. The Tuha oilfield logging examples showed that the above evaluation techniquesfor the identification and evaluation of oil and water had good application effect.