NMR data accuracy and resolution by formation modeling

摘要

Method and apparatus for estimating a parameter of interest of an earth formation using a model based on NMR data, imaging data, and NMR tool response characteristics. The method may include constructing a model of the earth formation. The method may also include constructing a predictive model for estimating the parameter of interest. The apparatus may include an NMR tool and at least one processor configured to estimate the parameter of interest. The apparatus may also include an imaging tool configured to acquire the imaging data.

主权项

1. A method of estimating at least one parameter of interest in a borehole penetrating an earth formation, comprising:
using an nuclear magnetic resonance (NMR) tool in the borehole to produce a static magnetic field in the earth formation and align nuclear spins within the earth formation; altering nuclear spins by producing radio frequency (RF) magnetic pulses as an output of a transmitting antenna on the NMR tool; using a receiving antenna for receiving signals indicative of the altered nuclear spins and comprising NMR data acquired by the NMR tool; using a processor to estimate the at least one parameter of interest using NMR data acquired in the borehole by the NMR tool, a model of the earth formation based on imaging data, and at least one characteristic of the NMR tool.