Patent ID: 11920441
Assignee: MAGNETIC VARIATION SERVICES, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A method of geosteering a well, the method comprising:
taking measurements at a plurality of measured depths, MDsw along a borehole of a subject well being drilled;
selecting an offset well log with measurements at a plurality of stratigraphic vertical depths, SVDow;
computing a misfit value, MV for each of a plurality of pairs of measurements of the subject well at measured depths, MDsw and the offset well at stratigraphic vertical depths, SVDow as a function of these two parameters as follows: misfit value, MV=f(MDsw,SVDow), and wherein a stochastic model is used to characterize the misfit value;
determining, responsive to the computed misfit value, a stratigraphic vertical depth, SVDsw of the subject well at the measured depths, MDsw; and
drilling the borehole of the subject well responsive to the determined stratigraphic vertical depth, SVDsw to a target stratigraphic vertical depth of the subject well, TSVDsw.