Parameters optimization in deepwater dual-gradient drilling based on downhole separation

WANG Jiangshuai,LI Jun,LIU Gonghui,HUANG Tao,YANG Hongwei

Table 1 Experimental results at different injection volume fractions of hollow spheres.

Injection volume fractions of hollow spheres/% Mass of initially added hollow spheres/kg Mass of the hollow spheres separated/kg Separation efficiency/ % 1 5 2.05 41.0 3 15 6.00 40.0 5 25 9.90 39.6 10 50 19.80 39.6