Method and system for reducing longitudinal fluid flow around a permeable well
AssigneeShell Oil Company
InventorsOlaf Jean Paul Bousche, Douwe Johannes Runia
Life of this patent
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Abstract
A method for reducing longitudinal flow of fluids through an annular space surrounding a permeable well tubular, such as a slotted liner or a sandscreen, in an inflow region of an oil and/or gas production well having: arranging a series of collapsed resilient sealing rings at regular longitudinal intervals around the permeable tubular before lowering the tubular into the well by means of tape and/or a binder which dissolves downhole; placing the tubular in the inflow region of the well; and allowing the tape and/or binder to dissolve, thereby allowing the resilient sealing rings to expand radially in the annular space surrounding the permeable tubular.
Claims6
A method for reducing longitudinal flow of fluids through an annular space surrounding a permeable well tubular-in an inflow region of an oil and/or gas production well, the method comprising:
- arranging at least one resilient sealing ring around the permeable tubular before lowering the tubular into the well;
- constraining the ring in a collapsed position around the tubular by means of a tape and/or binder which gradually dissolves in a downhole environment;
- placing the tubular in the inflow region of the well;
- and
- allowing the tape and/or binder to dissolve thereby allowing at least part of the resilient sealing ring to expand radially in the annular space surrounding the permeable tubular.
Dependencies are inferred from the claim text.