Use this geological calculation for a transparent first-pass interpretation of measured rock, soil, fluid, well, stratigraphic, isotopic, geophysical, or seismic data under an explicitly selected model.

Salinity

Dissolved solids concentration in parts per million.

Estimate brine mud weight in pounds per gallon from dissolved-solids salinity in ppm using the linear 0.7 kg/m3 per 1000 ppm rule. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Specific gravity

Estimated specific gravity of the brine.

Density

Brine density in kilograms per cubic metre.

Mud weight

Equivalent mud weight in pounds per gallon.

• Geological models are scale-, site-, method-, and calibration-dependent. Heterogeneity, anisotropy, sampling, diagenesis, pressure-temperature history, instrument response, boundary conditions, and empirical-correlation range can dominate the result.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.

• Brine Density Calculator

  Compute brine density and dissolved-solids salinity from water mass, salt mass and solution volume.

• Gravity Anomaly Bouguer Calculator

  Land Bouguer anomaly in milligal: g_obs - g_ref + 0.3086 h - 2 pi G rho h, with elevation h in meters and reduction density rho in kilograms per cubic meter (default 2670 kg/m^3).

• Mud Weight Required Calculator

  Determine the mud density needed to balance a known pore pressure at depth, including an optional trip margin.