Choke for controlling the flow of drilling mud

Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing

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Details

13732902, 13732903, 13732904, 166320, 175 38, 251 63, 251324, 251333, F16K 500

Patent

active

042574420

ABSTRACT:
This apparatus disclosed in its preferred form is a choke for controlling the flow of drilling mud which is highly abrasive. The abrasive drilling mud is introduced through a lateral port and an elongate, tubular body. In the tubular body, a fluid actuated, double acting piston is forced to a choke control position. The piston has appended to it a centralized, tubular extension which receives a sleeve of wear resistant material. The sleeve is positioned in a circular chamber communicated to the lateral port where the drilling mud is introduced. It travels toward a seat downstream of the body. The seat is formed of hardened material. The downstream outlet of the body is additionally lined with a wear resistant sleeve. An alternate embodiment is also disclosed. A hydraulic control system for operation of the choke is also disclosed.

REFERENCES:
patent: 662249 (1900-11-01), Cadman
patent: 855517 (1907-06-01), Nicodemus
patent: 1006564 (1911-10-01), Kinsey, Jr.
patent: 1193849 (1916-08-01), Viger
patent: 1202044 (1916-10-01), Fisher
patent: 2634754 (1953-04-01), Rahn
patent: 3064675 (1962-11-01), Johnson et al.
patent: 3703908 (1972-11-01), Tellier

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