Wash-out tool and method of use thereof

Details Wash-out tool and method of use thereof Wash-out tool and method of use thereof

1975-05-22

1976-08-10

Novosad, Stephen J.

Wells

Processes

Cleaning or unloading well

166314, 166 67, 1661053, 166164, E21B 3700, E21B 2100

Patent

active

039736300

ABSTRACT:
A standing valve wash-out tool comprises:
A. a vertically elongated tubular body,
B. elastomer cup means on the body to engage a well tubing bore as the body travels lengthwise within said bore in response to fluid pressure exertion on the cup means exteriorly of the body,
C. the body having a fluid pressure inlet above the cup means, there being a frangible plug within the body blocking fluid pressure flow downwardly through the body, and
D. a seat on the body proximate the lower end thereof and sized to land on sand containing means, whereby application of sufficient fluid pressure within the body will rupture said plug and pass downwardly through the body and outwardly below said seat to wash sand from said sand containing means.

REFERENCES:
patent: 2073126 (1937-03-01), Sweet
patent: 2138375 (1938-11-01), Grant
patent: 2501237 (1950-03-01), Sanders
patent: 2805718 (1957-09-01), Tausch
patent: 3020958 (1962-02-01), Kenneday
patent: 3064580 (1962-11-01), Calvert et al.
patent: 3302722 (1967-02-01), Madeley, Sr.
patent: 3892274 (1975-07-01), Dill

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