US 12,264,577 B2
Downhole pressure calculation based on strain gauge measurements
Bradley David Dunbar, The Woodlands, TX (US); Yi Pan, The Woodlands, TX (US); and Paul Gerard Cairns, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Oct. 6, 2021, as Appl. No. 17/450,140.
Prior Publication US 2023/0108851 A1, Apr. 6, 2023
Int. Cl. E21B 47/06 (2012.01); E21B 47/007 (2012.01); G01L 1/22 (2006.01)
CPC E21B 47/06 (2013.01) [E21B 47/007 (2020.05); G01L 1/2206 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for operating a drilling system, comprising:
obtaining strain measurements from a strain gauge at a first location associated with a drillstring of the drilling system based on detection of a pause in drilling;
determining a measure of hydrostatic pressure and a measure of hydrodynamic pressure at the first location from the strain measurements of the strain gauge;
indicating the measure of hydrostatic pressure and the measure of hydrodynamic pressure for monitoring of the drilling; and
controlling drilling equipment of the drilling system based on the measure of hydrostatic pressure and the measure of hydrodynamic pressure, wherein controlling the drilling equipment of the drilling system includes modifying flow rate or mud weight in the drilling system based on the measure of hydrostatic pressure and the measure of hydrodynamic pressure.