首页>
外国专利>
Deep resistivity transient method for MWD applications using asymptotic filtering
Deep resistivity transient method for MWD applications using asymptotic filtering
展开▼
机译:使用渐近滤波的MWD应用深电阻率瞬态方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method is discussed of obtaining a parameter of interest of an earth formation, typically a formation resistivity or a distance to a bed boundary, in conditions where an induction tool is using having a body with finite, non-zero conductivity. The method substantially removes the effects of the conductivity of the tool from the signal received from the earth formation. A Taylor series expansion in one half of odd integer powers of time is used to represent the received signal. At least one leading term of the Taylor series expansion can be subtracted from the second signal. A filtering operation is applied to the second signal to remove the terms most dominated by pipe effects. Typical filtering operations can be a differential filtering operation or an integral filtering operation.
展开▼