Milling particles in drilling fluid

摘要

This disclosure is drawn to systems, devices, apparatuses, and/or methods, related to milling particles in drilling fluid. Specifically, the disclosed systems, devices, apparatuses, and/or methods relate to milling particles in drilling fluid using multiple milling techniques. Some example apparatuses may include a first mill to grind particles from the original diameter to a first reduced diameter, and a second mill to grind the particles from the first reduced diameter to a second reduced diameter, where the second reduced diameter is less than the first reduced diameter.

主权项

1. An apparatus for milling particles having an original diameter, the apparatus comprising:
a first mill adapted to receive a drilling fluid comprising a mixture of fluid and particles and to grind the particles from the original diameter to a first reduced diameter wherein the first mill comprises a hammer mill; a second mill adapted to receive the drilling fluid from the first mill and further adapted to grind the particles from the first reduced diameter to a second reduced diameter, wherein the second reduced diameter is less than the first reduced diameter and wherein the second mill comprises a pearl mill; and a diaphragm positioned between the first mill and the second mill, the diaphragm having a plurality of gaps configured to maintain a fluid pressure within the first mill and to allow the particles having the first reduced diameter to move from the first mill to the second mill.