MULTI-STAGE CEMENTING TOOL AND METHOD
First Claim
1. A downhole tool, comprising:
- a body having a bore axially therethrough and an opening radially therethrough;
a first sleeve positioned at least partially in the bore of the body, wherein the first sleeve has an opening radially therethrough that is aligned with the opening of the body when the downhole tool is in a first configuration, and wherein an inner surface of the first sleeve defines a first seat; and
a second sleeve positioned at least partially in the first sleeve, wherein the second sleeve is axially aligned with the opening of the first sleeve and prevents fluid flow therethrough when the downhole tool is in the first configuration, and wherein the second sleeve is configured to move axially and engage the first seat of the first sleeve when the downhole tool is in a second configuration, so as to resist relative rotation between the first and second sleeves.
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Accused Products
Abstract
A downhole tool, multi-stage cementing tool, and method for cementing. The tool includes a body having a bore axially therethrough and an opening radially therethrough, and a first sleeve positioned in the bore of the body. The first sleeve has an opening radially therethrough that is axially aligned with the opening of the body when the downhole tool is in a first configuration. An inner surface of the first sleeve defines a first seat. The tool also includes a second sleeve positioned in the first sleeve, with the second sleeve being aligned with the opening of the first sleeve and preventing fluid flow therethrough when the tool is in the first configuration. The second sleeve is configured to move axially and engage the first seat of the first sleeve when the tool is in a second configuration, so as to resist relative rotation between the first and second sleeves.
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Citations
23 Claims
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1. A downhole tool, comprising:
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a body having a bore axially therethrough and an opening radially therethrough; a first sleeve positioned at least partially in the bore of the body, wherein the first sleeve has an opening radially therethrough that is aligned with the opening of the body when the downhole tool is in a first configuration, and wherein an inner surface of the first sleeve defines a first seat; and a second sleeve positioned at least partially in the first sleeve, wherein the second sleeve is axially aligned with the opening of the first sleeve and prevents fluid flow therethrough when the downhole tool is in the first configuration, and wherein the second sleeve is configured to move axially and engage the first seat of the first sleeve when the downhole tool is in a second configuration, so as to resist relative rotation between the first and second sleeves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A multi-stage cementing tool, comprising:
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a body comprising an axially-extending bore therethrough and a radially-extending opening in communication with the bore; a first sleeve positioned in the bore of the body, wherein the first sleeve has a radially-extending opening that is aligned with the opening in the body when the cementing tool is in a first configuration, wherein an inner surface of the first sleeve forms first and second seats that are axially-offset from one another; a second sleeve positioned at least partially in the first sleeve and defining a seat, wherein the second sleeve is axially aligned with the opening in the first sleeve and prevents fluid flow therethrough when the cementing tool is in the first configuration, wherein the second sleeve is axially-offset from the opening in the first sleeve when the tool is in a second configuration such that a path of fluid communication exists from the bore, through the openings in the first sleeve and the body, to an exterior of the body; a third sleeve positioned in the first sleeve and axially-offset from the second sleeve, wherein the third sleeve is configured to engage the second seat of the first sleeve when the cementing tool is in a third configuration; and a guide assembly configured to maintain an impediment received in the seat of the second sleeve in substantial alignment with a central longitudinal axis through the body. - View Dependent Claims (15, 16)
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17. A method for cementing a portion of a wellbore, comprising:
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running a downhole tool into the wellbore in a first configuration, wherein the downhole tool comprises; a body having a bore axially therethrough and an opening radially therethrough; a first sleeve positioned at least partially in the bore of the body, wherein the first sleeve has an opening radially therethrough that is aligned with the opening of the body when the downhole tool is in a first configuration, and wherein an inner surface of the first sleeve defines a first seat; and a second sleeve positioned at least partially in the first sleeve, wherein the second sleeve is axially aligned with the opening of the first sleeve and prevents fluid flow therethrough when the downhole tool is in the first configuration, and wherein the second sleeve is configured to move axially and engage the first seat of the first sleeve when the downhole tool is in a second configuration, so as to resist relative rotation between the first and second sleeves; and pumping a first fluid into the wellbore from a surface location, wherein at least a portion of the first fluid flows through the bore in the body and out a lower end of the body. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification