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US 12,241,334 B2Granted
Unidirectional cementing baskets for cement top jobs
AssigneeSaudi Arabian Oil Company
InventorsDautmammet Rejepov, Syed Muhammad Ali
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Abstract
A downhole tool includes a support ring having an annular-shaped body, a thickness measured between an uphole side of the body and an opposite downhole side of the body, an extension distance measured between an inner diameter of the body and an outer diameter of the body, and one or more openings formed through the thickness of the body. A one-way valve is disposed in each opening formed through the support ring to limit flow through the support ring in a direction from the downhole side of the body to the uphole side of the body.
Claims16
A downhole tool, comprising:
- a support ring provided on a casing joint, the support ring comprising:
- an annular-shaped body;
- a thickness measured between an uphole side of the body and an opposite downhole side of the body;
- an extension distance measured between an inner diameter of the body and an outer diameter of the body;
- wherein the body of the support ring extends radially outward the extension distance from an outer diameter of the casing joint,
- an opening formed through the thickness of the body;
- and
- a flapper valve disposed in the opening, wherein the flapper valve comprises a flapper rotatable about an axis perpendicular to the thickness of the body.
5 more elements
A method, comprising:
- providing a casing string in a wellbore, wherein the casing string is made of multiple casing joints axially connected together, the multiple casing joints comprising:
- a unidirectional rigid cement (URC) basket, comprising:
- a first casing joint having a tubular body;
- and
- a support ring positioned along the tubular body, wherein the support ring comprises:
- an annular-shaped body extending radially outward from the tubular body;
- multiple openings formed through a thickness of the support ring;
- and
- multiple flapper valves, wherein each of the multiple flapper valves is provided in each of the multiple openings;
- pumping cement through the casing string and into an annulus formed between the casing string and the wellbore in a first cementing stage;
- and
- pumping the cement through the annulus from a location uphole of the URC basket in a second cementing stage.
9 more elements
Dependencies are inferred from the claim text.