Composite joint with casing exit locator
AssigneeSchlumberger Technology Corporation
InventorsJeremie Fould, Miguel Angel Tejada, Mahmoud Seiam
Life of this patent
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Abstract
An apparatus and method of creating a window in a composite casing section. The composite casing section has a metallic casing, an indexing locator and a composite joint. The composite joint is positioned between the metallic casing and indexing locator. The indexing locator is configured to locate a departure device within the wellbore. The departure device directs the milling device to mill the window through the composite joint. A lateral wellbore is created after the window is milled through the composite joint.
Claims17
A composite casing section for use with a departure device for directing a milling device and comprising an anchor, the composite casing section comprising:
- a metallic casing;
- an indexing locator configured to locate the departure device within a wellbore and receive the anchor of the departure device, wherein the indexing locator comprises an inner profile engageable by radially expandable members of the anchor, and the inner profile has radial grooves disposed at least on radially opposite sides of a central axis;
- and
- a composite joint coupling the metallic casing and the indexing locator, wherein the composite joint is tubular and comprises a composite material extending about an entire circumference around the central axis, wherein the composite joint is positioned relative to the indexing locator such that the departure device directs the milling device to mill a window through the composite joint, wherein a first axial end portion of the composite joint has the composite material axially overlapping with the metallic casing about both inner and outer circumferences of the metallic casing, and wherein a second axial end portion of the composite joint has the composite material axially overlapping with the indexing locator about both inner and outer circumferences of the indexing locator.
A system to mill a window in a composite casing section disposed in a wellbore;
- wherein the composite casing section is connected to a casing;
- wherein the composite casing section comprises:
- a metallic casing;
- an indexing locator configured to locate a departure device within the wellbore and receive an anchor of the departure device, wherein the indexing locator comprises an inner profile engageable by radially expandable members of the anchor, and the inner profile has radial grooves disposed at least on radially opposite sides of a central axis;
- and
- a composite joint coupling the metallic casing and the indexing locator, wherein the composite joint is tubular and comprises a composite material extending about an entire circumference around the central axis, wherein the composite joint is positioned relative to the indexing locator such that the departure device directs a milling device to mill the window through the composite joint, wherein a first axial end portion of the composite joint has the composite material axially overlapping with the metallic casing about both inner and outer circumferences of the metallic casing, and wherein a second axial end portion of the composite joint has the composite material axially overlapping with the indexing locator about both inner and outer circumferences of the indexing locator.
A method of creating a window in a composite casing section comprising:
- cementing the composite casing section within a wellbore;
- locating a departure device within the composite casing section;
- anchoring the departure device to an indexing locator of the composite casing section via an anchor, wherein the indexing locator comprises an inner profile engageable by radially expandable members of the anchor, and the inner profile has radial grooves disposed at least on radially opposite sides of a central axis;
- and
- directing a milling device via the departure device to mill the window through a composite joint of the composite casing section, wherein the composite joint is tubular and comprises a composite material extending about an entire circumference around the central axis, wherein a first axial end portion of the composite joint has the composite material axially overlapping with a metallic casing about both inner and outer circumferences of the metallic casing, and wherein a second axial end portion of the composite joint has the composite material axially overlapping with the indexing locator about both inner and outer circumferences of the indexing locator.
Dependencies are inferred from the claim text.