Changes

A useful and practical rule of thumb for BHGM remote sensing applications is that a remote body with sufficient density contrast can be detected by the BHGM no farther from the wellbore than one or two times the height of the body. A salt dome with [[depth::15,000 ft]] of vertical relief would have a definitive signature a few miles away. A channel sand [[length::20 ft]] thick would be detectable no more than [[length::40 ft]] away. Local geology, and in particular the thickness of local density units, defines the effective radius of investigation of the BHGM.

A useful and practical rule of thumb for BHGM remote sensing applications is that a remote body with sufficient density contrast can be detected by the BHGM no farther from the wellbore than one or two times the height of the body. A salt dome with [[depth::15,000 ft]] of vertical relief would have a definitive signature a few miles away. A channel sand [[length::20 ft]] thick would be detectable no more than [[length::40 ft]] away. Local geology, and in particular the thickness of local density units, defines the effective radius of investigation of the BHGM.

Computer modeling of BHGM measurements can be used to develop relatively detailed salt dome flank or reef flank model interpretations. Modeling is particularly effective where seismic data can be integrated into the modeling process; a model is sought that is consistent with both data sets.<ref name=pt07r34>Lines, L. R., Schultz, A. K., Treitel, S., 1988, Cooperative inversion of geophysical data: Geophysics, v. 53, n. 1, p. 820., 10., 1190/1., 1442403</ref>

Computer modeling of BHGM measurements can be used to develop relatively detailed salt dome flank or reef flank model interpretations. Modeling is particularly effective where seismic data can be integrated into the modeling process; a model is sought that is consistent with both data sets.<ref name=pt07r34>Lines, L. R., Schultz, A. K., Treitel, S., 1988, Cooperative inversion of geophysical data: Geophysics, v. 53, n. 1, p. 820, 10, 1190/1, 1442403</ref>

==Theory==

==Theory==