PetroCalcHubFree
PetrophysicsRock Properties

Sonic First-Arrival Time in a Borehole

tlog=Lsvf+dh(dt+2lc)vm1(vmvf)2t_{log}=\frac{L_s}{v_f}+\frac{d_h-(d_t+2l_c)}{v_m}\sqrt{1-\left(\frac{v_m}{v_f}\right)^2}

Tabular solver

Run the same equation across multiple cases and compare results in one table.

CaseL_sftv_fft/usd_hftd_tftl_cftv_mft/usResultAction
1Pending
2Pending
3Pending