Patent ID: 9650850
Date: 2017-05-16
CPC Classifications: C09K,E21B

Claim:
1. A method comprising: circulating a drilling fluid comprising a base fluid and a plurality of particles through a wellbore penetrating a subterranean formation, wherein the plurality of particles has a multimodal distribution that includes a first mode having a first d50 lower than a second d50 of a second mode, and wherein the first mode has a d75 less than a d25 of the second mode, and wherein a first type of particle corresponds to the first mode and a second type of particle corresponds to the second mode; passing the drilling fluid over a screen having a mesh size between the d75 of the first mode and the d25 of the second mode, thereby removing a portion of the second type of particle; adding a concentration of the second type of particle to the drilling fluid, wherein the second type of particle have a d10 greater than or equal to the mesh size of the screen; and then, re-circulating the drilling fluid into the wellbore.