Propagation of Measurement-While-Drilling Mud Pulse during High Temperature Deep Well Drilling Operations

Table 1

Empirical constants for the water-base mud (from Isambourg et al. [42]).

𝜌sf; kg·m^−3	𝛾𝑝·10^10; Pa^−1	𝛾𝑝𝑝·10^19; Pa^−2	𝛾𝑇·10^4; K^−1	𝛾𝑇𝑇·10^7; K^−2	𝛾𝑝𝑇·10^13; K^−1Pa^−1	μ; mPa·s	ε·10^−9; Pa
2212	2.977	−2.293	−1.957	−16.838	0.686	20	3.359