Progressive gap sand control screen and process for manufacturin

Details Progressive gap sand control screen and process for manufacturin Progressive gap sand control screen and process for manufacturin

1997-01-23

1999-08-17

Reifsnyder, David A.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210499, 166231, 2989661, 29 33F, 29340, 29902, 29905, 29DIG77, E21B 4308

Patent

active

059389257

ABSTRACT:
A progressive gap sand control screen comprising a plurality of parallel ribs spaced around an axis and a screen wire wrapped around the plurality of ribs having turns which extend along the length of the plurality of ribs such that adjacent turns have gaps therebetween, the gaps forming a gap profile in which the gaps near the upper end of the sand control screen are narrower than the gaps near the lower end of the sand control screen, the width of the gaps near the upper end of the sand control screen being less than the diameter of the particles which cause erosion, the gap profile includes a variable gap section near the upper end of the sand control screen and a constant gap section below the variable gap section, the variable gap section having a linear profile, a step type profile, or a nonlinear profile.

REFERENCES:
patent: 3584685 (1971-06-01), Boyd
patent: 4068713 (1978-01-01), McGuire
patent: 4200150 (1980-04-01), Saadeh et al.
patent: 4428423 (1984-01-01), Koehler et al.
patent: 4494603 (1985-01-01), Harguindey
patent: 5152892 (1992-10-01), Chambers

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