IP Library Granted Patent US 9,194,206
Granted Patent B2
US 9,194,206 · App. 13/111,215 · Granted Nov 24, 2015

Easy drill slip

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Quick Facts
Patent No.
US 9,194,206
App. No.
13/111,215
Granted
Nov 24, 2015
Kind
B2
Abstract

A design for a bridge plug wherein the slip elements include an outer contact portion to engage a surrounding tubular member and an inner body portion designed to easily disintegrate during removal of the bridge plug by subsequent milling. The inner body portion is formed of a softer material than the outer contact portion. Also, the inner body portion is made up of a plurality of segments that are readily separated and dispsersed during milling out.

Claims (30)

1. A slip element for a bridge plug device comprising:

an outer contact portion to provide engaging contact with a tubular member surrounding the bridge plug device;

an inner body portion in contact with the outer contact portion and formed of a plurality of separate segments that adjoin one another to form a support for the outer contact portion, the segments being separate from one another prior to the slip element being moved to a set position on the bridge plug device; and

wherein the segments are arranged in an array of rows and columns.

2. The slip element of claim 1 wherein the segments are affixed to each other by an adhesive.

3. The slip element of claim 1 wherein the outer contact portion is substantially formed of cast iron.

4. The slip element of claim 1 wherein the inner body portion is substantially formed of aluminum.

5. The slip element of claim 1 wherein:

the outer contact portion is substantially formed of a first material; and

the inner body portion is formed of a second material that is softer than the first material.

6. The slip element of claim 1 further comprising a plurality of openings formed through the outer contact portion to promote disintegration of the outer contact portion during milling out.

7. A bridge plug device for forming a closure within a flowbore, the bridge plug device comprising:

a setting cone;

a plurality of slip elements that are selectively moveable with respect to the setting cone between unset and set positions, each of the slip elements comprising:

an outer contact portion being formed of a first material suitable to provide engaging contact with a tubular member surrounding the bridge plug device; and

an inner body portion in contact with the outer contact portion and formed of a plurality of separate segments, the segments being separate from one another prior to the slip element being moved to a set position on the bridge plug device, the separate segments being formed of a second material that is softer than the first material and wherein the segments are arranged in an array of rows and columns.

8. The bridge plug device of claim 7 wherein the plurality of segments adjoin one another to form a support for the outer contact portion.

9. The bridge plug device of claim 7 wherein:

the slip elements are cast within a phenolic molding.

10. The bridge plug device of claim 7 wherein the outer contact portion is substantially formed of cast iron.

11. The bridge plug device of claim 7 wherein the inner body portion is substantially formed of aluminum.

12. A method of removing a bridge plug that is set within a flowbore from the flowbore, comprising the steps of:

a) engaging a top portion of the bridge plug with a milling tool, the bridge plug having:

a setting cone;

a plurality of slip elements that are selectively moveable with respect to the setting cone between unset and set positions, each of the slip elements comprising:

an outer contact portion being formed of a material suitable to provide engaging contact with a tubular member surrounding the bridge plug;

an inner body portion in contact with the outer contact portion and formed of a plurality of separate segments that adjoin one another to form a support for the outer contact portion, the segments being separate from one another prior to the slip element being moved to a set position on the bridge plug device and wherein the segments are arranged in an array of rows and columns;

b) milling the inner body portion to separate and disperse the segments.

13. The method of claim 12 wherein the outer contact portion comprises a plurality of openings disposed therethrough and further comprising the step of:

milling the outer contact portion to cause the outer contact portion to rupture at the openings into smaller pieces.

Assignments (3)
CHANGE OF NAME Recorded Apr 6, 2022
From: BAKER HUGHES, A GE COMPANY, LLC
To: BAKER HUGHES HOLDINGS LLC
Reel/Frame 059620/0651 →
CHANGE OF NAME Recorded Mar 24, 2022
From: BAKER HUGHES INCORPORATED
To: BAKER HUGHES, A GE COMPANY, LLC
Reel/Frame 059497/0467 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 5, 2011
From: XU, RICHARD YINGQING; O'MALLEY, EDWARD
To: BAKER HUGHES INCORPORATED
Reel/Frame 026543/0149 →