Determination of formation dip/azimuth with multicomponent induction data

摘要

The disclosure describes enhanced determination of dip and strike/azimuth for real-time MCI data processing in some difficult conditions such as low-dip and low-anisotropy formations using formation properties from surrounding layers. The method is effective for the enhanced determination of dip and azimuth to enhance the inversion accuracy of formation dip and azimuth if the formation anisotropic ratio is low and so reduce the uncertainty of the inverted dip and azimuth.

主权项

1. A method for measuring formation properties, the method comprising:
obtaining a set of multicomponent induction data, representing layers of downhole formations, from a logging tool having an antenna arrangement that provides the set of multicomponent induction data as a function of tool position in a borehole through the layers of the downhole formations; performing inversion processing on the set of multicomponent induction data to determine a set of formation parameters for each of the layers; and updating at least a portion of the set of formation parameters for each of the layers based on formation anisotropic ratios of neighboring layers.