摘要
Abstract
Apparent resistivity interpretation equations for oil zone, payzone with mobile water and aqueous layer have been established based on the homogeneous reservoir rock model. Proposed are the concepts of displacement rate of the formation fluid and allocation coefficients of the mud filtrate. The formation fluid displacement rate is used for quantification appraisal of sand formation contaminant under the condition of fresh drilling mud or salt drilling mud. It is believed the lower the resistivity of drilling fluid, the higher inaccuracy of resistivity logs, and the higher the displacement rate of the formation fluid, the higher the sand formation contaminant. By using the established apparent resistivity interpretation equation, the mud infiltration features can be determined as increased resistance, semi-increased resistance or decreased resistivity. By using this method, porosity fluid properties of the sand reservoirs can be effectively evaluated under various drilling fluid conditions.关键词
测井评价/泥浆侵入/视电阻率/增阻/减阻/流体性质/砂岩Key words
log evaluation, mud invasion, apparent resistivity, increased resistance, decreased resistivity, fluid property, sand分类
天文与地球科学
