Tilted angle selection of collocated antennas on downhole resistivity tools

One or more non-transitory machine-readable media comprising program code for determining a configuration of a collocated antenna assembly, the program code to:

• simulate a plurality of responses at a plurality of tilted angles for one or more coil pairs of the collocated antenna assembly based, on at least one coil parameter of the collocated antenna assembly, wherein each coil pair includes two coils oriented at different tilted angles, and wherein the at least one coil parameter comprises at least one of a number of coil turns, a coil size, and a number of coils;
• determine crosstalk between each coil of the coil pairs based on the simulated responses;
• determine a signal-to-noise ratio for each of the plurality of tilted angles based on the crosstalk;
• and
• select an effective tilted angle from the plurality of tilted angles for each coil of the coil pairs of the collocated antenna assembly, the effective tilted angle corresponding to an optimal signal-to-noise ratio of the determined signal-to-noise ratios.

A resistivity tool comprising:

• a mandrel having an axial line of symmetry;
• and
• a collocated antenna assembly having one or more coil pairs mounted on the mandrel, wherein each coil pair includes two coils oriented at different tilted angles relative to the axial line of symmetry, wherein the tilted angle of each coil is selected based on
• a simulation of responses at a plurality of tilted angles for each of the coil pairs based on at least one coil parameter that indicates at least one of a number of coil turns, a coil size, and a number of coils,
• a crosstalk between the coil pairs based on the simulation responses, and
• a signal-to-noise ratio that is based on the crosstalk.