Erosion Migration Arrangement, Erodable Member and Method of Migrating a Slurry Flow Path
An erosion migration arrangement includes a tubular having a window therein. A body positioned within a portion of the window is configured to sacrificially erode in response to a slurry flowing through the window to thereby migrate a location of impact on a member positioned downstream of the window.
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A known issue that occurs along a slurry flow path is erosion of components. For example, the flow of gravel slurry during downhole gravel packing operations in the downhole completion industry have been known to erode completely through a wall of a casing. Operators have employed various techniques to minimize such erosion including use of hardened shields in the most erosion prone locations. Such methods may successfully address the erosion concern, however, positioning the hardened shields often comes at a cost premium. Other drawbacks may also be encountered, such as difficulty in properly positioning the shields, for example. Operators are therefore always interested in new devices and methods to address undesirable erosion.
BRIEF DESCRIPTIONDisclosed herein is an erosion migration arrangement that includes a tubular having a window therein. A body positioned within a portion of the window is configured to sacrificially erode in response to a slurry flowing through the window to thereby migrate a location of impact on a member positioned downstream of the window.
Further disclosed is a method of migrating a slurry flow path including constructing at least one portion of a border of a window of a tubular from an eroded material, flowing slurry through the window; eroding the at least one portion at a faster rate than a remaining border of the window; and migrating a flow path of the slurry.
Further disclosed is a sacrificially erodable member which includes a core configured to easily erode in a target environment, and a shell in operable communication with the core configured to protect the core from eroding until fracture thereof.
The following descriptions should not be considered limiting in any way. With reference to the accompanying drawings, like elements are numbered alike:
A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.
Referring to
The body 22, as described, sacrificially erodes to intentionally alter the area of impingement 34 on the downstream surface 30. Specifically selecting certain design parameters can influence this intentional sacrificial erosion. For example, a border location of a portion of the window 18 having the body 22 can influence the rate of erosion thereof. Positioning the body 22 on a downhole portion of the border will assure that more of the particulates in the slurry directly impact the body 22 and with greater force than if the body 22 is placed elsewhere along the border. Alternately, the body 22 can have an altered geometry that is susceptible to erosion, such as a thinner wall, for example. Additionally, the body can be made of a material that erodes more easily than a material from which the tubular 14 is made. Alternately, the body 22 could be made of the same material as the tubular 14 but be processed in differently. For example, the body could be foamed or heat-treated resulting in a different strength and hardness.
Referring to
While the invention has been described with reference to an exemplary embodiment or embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the claims. Also, in the drawings and the description, there have been disclosed exemplary embodiments of the invention and, although specific terms may have been employed, they are unless otherwise stated used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention therefore not being so limited. Moreover, the use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another. Furthermore, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
Claims
1. An erosion migration arrangement comprising:
- a tubular having a window therein; and
- a body positioned within a portion of the window being configured to sacrificially erode in response to a slurry flowing through the window to thereby migrate a location of impact on a member positioned downstream of the window.
2. The erosion migration arrangement of claim 1, wherein the tubular is configured to transport the slurry during a gravel packing operation.
3. The erosion migration arrangement of claim 1, wherein the body is positioned on a downstream side of the window.
4. The erosion migration arrangement of claim 1, wherein the body is configured to erode more quickly than the tubular.
5. The erosion migration arrangement of claim 1, wherein the body is made of a material that reacts with an environment anticipated to be encountered during flow of the slurry.
6. The erosion migration arrangement of claim 5, wherein reaction of the body includes disintegration thereof.
7. The erosion migration arrangement of claim 1, wherein the body has a shell covering a core and the shell is more resistant to degradation than the core.
8. The erosion migration arrangement of claim 7, wherein the shell prevents the core from disintegration until the shell is fractured.
9. The erosion migration arrangement of claim 7, wherein disintegration of the core quickens erosion thereof.
10. The erosion migration arrangement of claim 7, wherein the core is made of a reactive and soft metal such as Mg, Al, Zn, Sn or alloys including at least one of the foregoing.
11. The erosion migration arrangement of claim 7, wherein the core is made of a reactive metal matrix reinforced by micro or nano particulates selected from the group consisting of ceramics, metallic, intermetallic, oxides, carbides and nitrides.
12. The erosion migration arrangement of claim 7, wherein the shell is made of a material that is selected from the group consisting of ceramic, metallic, intermetallic, oxides carbides, and nitride.
13. The erosion migration arrangement of claim 7, wherein the slurry includes gravel and a fluid.
14. A method of migrating a slurry flow path comprising:
- constructing at least one portion of a border of a window of a tubular from an degraded material;
- flowing slurry through the window;
- eroding the at least one portion at a faster rate than a remaining border of the window; and
- migrating a flow path of the slurry.
15. The method of migrating a slurry flow path of claim 13, wherein the at least one portion is a downstream portion of the border.
16. The method of migrating a slurry flow path of claim 13, further comprising disintegrating the at least one portion.
17. The method of migrating a slurry flow path of claim 13, further comprising constructing the at least one portion of at least one material configured to disintegrate in a target environment.
18. The method of migrating a slurry flow path of claim 13, further comprising constructing the at least one portion of a shell material and a core material.
19. The method of migrating a slurry flow path of claim 17, wherein the core material disintegrates more easily than the shell material.
20. A sacrificially erodable member comprising;
- a core configured to easily erode in a target environment; and
- a shell in operable communication with the core configured to protect the core from eroding until fracture thereof.
21. The sacrificially erodable member of claim 19, wherein the core is made of a material that more easily erodes than a material that the shell is made of
22. The sacrificially erodable member of claim 19, wherein the core is made of a material that disintegrates in a target environment.
Type: Application
Filed: Aug 9, 2010
Publication Date: Feb 9, 2012
Applicant: BAKER HUGHES INCORPORATED (Houston, TX)
Inventors: Richard YingQing Xu (Tomball, TX), Zhiyue Xu (Cypress, TX)
Application Number: 12/853,035
International Classification: E21B 43/26 (20060101);