reduction in example 2 test 2 the following dynamic filtration criteria were tested a fluid loss versus time b filter cake wt gram and c filter cake thickness in inches the dynamic filtration data of example 2 test 2 is set forth in table 6 below the results of example 2 test 2 table 6 are as follows after 60 minutes the dynamic fluid loss was reduced from 24 0 ml to 16 8 ml a 32 reduction which is an excellent result the cake weight in grams was reduced from 91 grams to 62 grams a 32 reduction which is a very good result the filter cake was reduced from 18 32 to 12 32 a 33 reduction which is also an excellent result table 7 below shows the test results of the lubricity of the additive as torque is applied the lubricity results of example 2 test 3 indicate an improvement in lubrication was about 70 at the 600 reading on the lubricity tester which is an excellent result the texture of the filter cake surfaces and the surfaces of the base mud were also tested the results were as follows the texture of the surface of the base 16 9 ppg mud was smooth and shinny the texture of the dynamic filter cake surface of the base mud treated with 2 by volume of the talc bead and oil mixture was shinny and the copolymer beads could be seen impregnated in the.