高含水期地层混合液电阻率的求取方法

Determination of Resistivity of Mixed Fluid in Formation During the High Water cut Stage

对利用自然电位曲线求取地层混合液电阻率的方法进行研究 ,对实际生产中影响自然电位曲线的多种因素 (井径、层厚、泥浆侵入、泥质含量、过滤电位、含油性等 )逐项进行分析 ,并提出相应的校正方法。现场应用效果表明 ,该校正方法能够提供科学可靠的地层混合液电阻率值 。

Mixed fluid resistivities in formation are obtained with spontaneous potential(SP) curves A variety of factors influencing the SP curves in actual production, such as hole diameter, bed thickness, mud invasion, shale content, electrofiltration potential, oil bearing property, etc. are analyzed. Correspondent calibrating methods are proposed Field result demonstrates that the mixed fluid resistivities can be accurately determined by the method, making the remaining oil saturation more accurate