초록 ▼

A mud shearing device for placement in the mud flow line in a well drilling operation includes a series of inner pressure chambers surrounded by concentric outer chambers with jet discharge ports connecting each inner chamber with a respective outer chamber and an inlet aperture connecting each succ

A mud shearing device for placement in the mud flow line in a well drilling operation includes a series of inner pressure chambers surrounded by concentric outer chambers with jet discharge ports connecting each inner chamber with a respective outer chamber and an inlet aperture connecting each succeeding inner chamber with a preceding outer chamber. The mud flow line is connected to the first inner chamber by a flanged nipple, and mud is pumped under pressure into the first inner chamber and then sheared by discharge in a high velocity jet stream through the discharge ports into the first outer chamber and impinged against the wall surface of the outer chamber. A similar shearing mud flow is repeated through the succeeding series of inner and outer chambers and respective discharge ports to the last outer chamber which is connected by an outlet nipple to a continuation of the mud flow line where the mud continues in a conventional flow circuit in the drilling operation. Removable nozzles of various sizes can be secured in the discharge ports.

대표청구항 ▼

Fluid mixing and shearing apparatus comprising: an elongated tube with one end open and the opposite end closed and being divided into a plurality of chambers by a plurality of partition plates axially spaced apart from each other within said tube, each of said chambers having an enlarged inlet open

Fluid mixing and shearing apparatus comprising: an elongated tube with one end open and the opposite end closed and being divided into a plurality of chambers by a plurality of partition plates axially spaced apart from each other within said tube, each of said chambers having an enlarged inlet opening and a discharge port in its respective wall section of said tube, said one open end of said tube being the inlet opening of the first chamber, and the subsequent chambers having enlarged apertures in the walls of the respective tube sections for each chamber, said apertures being the inlet openings in said subsequent chambers; and an elongated casing positioned in radially outward spaced concentric relation around said tube, one end of said casing being sealed to the outer peripheral surface of said tube and the opposite end being open to fluid flow and forming an outlet opening.