Abstract This invention relates to a completion system for a well drilled in the earth and especially for a well drilled to an oil and gas producing formation. It relates to a system for selectively producing fluid from either an upper or lower zone and for providing sand control facilities for each zone. A tubing string is suspended in a well bore and has an upper sand screen and a lower sand screen which are adjacent the upper and lower producing zones respectively. A packer is set in the annulus about the tubing between the two sand screens. An upper sleeve valve is mounted in the tubing string and is surrounded by the upper sand screen. Plug valve means are provided in the tubing string between the two sand screens. By selectively opening or closing the sleeve valve and the plug valve, production can be selectively opened from either the top or lower zones or both.
Inventors
👤 C Wolff
👤 M Jeansonne
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-31 23:48
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A system for completing a well having an upper unconsolidated producing formation and a lower unconsolidated producing formation which comprises: a casing having upper perforations and lower perforations at the elevations of said upper and lower formation respectively; a string of tubing in said casing, said string having no other string within its interior; a sleeve valve in said string of tubing at the elevation of said upper zone; an upper sand screen surrounding said sleeve valve; a lower sand screen connected to the lower end of said string of tubing; a packer placed about said string of tubing between said upper and said lower sand screen filters; a tubing valve means at a selected location in said string of tubing between said sleeve valve and said lower sand screen operable from the surface to open or close said string of tubing at said selected location.
Claim 2
Independent Claim
146 words
A system for completing a well having an upper unconsolidated producing formation and a lower unconsolidated producing formation which comprises: a casing having upper perforations and lower perforations at the elevations of said upper and lower formation respectively; a string of tubing in said casing, said string having no other string within its interior; a sleeve valve in said string of tubing at the elevation of said upper zone; an upper sand screen surrounding said sleeve valve; a lower sand screen connected to the lower end of said string of tubing; a packer placed about said string of tubing between said upper and said lower sand screen filters; a tubing valve means at a selected location in said string of tubing between said sleeve valve and said lower sand screen operable from the surface to open or close said string of tubing at said selected location.
Claim 3
Dependent Claim
19 words
A system as defined in claim 1 including a packer about said tubing string above said upper sand screen.
Claim 4
Dependent Claim
60 words
A system as defined in claim 1 in which said upper and lower sand screens each comprise a filter of a plurality of concentric screens spaced radially from one another, the opening in any one screen being no larger than the openings in any screen of larger diameter and no smaller than the openings in any screen of smaller diameter.