CA2573236A1 - Drill pipe protector - Google Patents
Drill pipe protector Download PDFInfo
- Publication number
- CA2573236A1 CA2573236A1 CA002573236A CA2573236A CA2573236A1 CA 2573236 A1 CA2573236 A1 CA 2573236A1 CA 002573236 A CA002573236 A CA 002573236A CA 2573236 A CA2573236 A CA 2573236A CA 2573236 A1 CA2573236 A1 CA 2573236A1
- Authority
- CA
- Canada
- Prior art keywords
- sleeve
- drill pipe
- protector
- shell
- liner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001012 protector Effects 0.000 title claims abstract 12
- 230000001681 protective effect Effects 0.000 claims 4
- 229920001971 elastomer Polymers 0.000 claims 2
- 239000000806 elastomer Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 230000001965 increasing effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
Abstract
A drill pipe protector having a tubular sleeve that is attached to a section of drill pipe and resides over the outer diameter of the drill pipe while moving within an associated well casing or well hole. The sleeve has low-friction end pads positioned on the ends of the sleeve to reduce friction between the ends of the sleeve and the end of an adjacent thrust bearing collar used to hold the sleeve in place on the drill pipe.
Claims (12)
1. A protective sleeve for installation around a drill pipe used to drill a wellbore in an underground formation, the protective sleeve prefer-entially contacting an inside diameter (I.D.) of a well casing or bore when the drill pipe deflects off center in the casing or bore to protect the casing or bore from contact with the drill pipe or its tool joints during rotation of the drill pipe, and which the sleeve has a generally cylindrical configuration with an internal LD. for contact with an outside diameter (O.D.) of the drill pipe wherein the sleeve is a multi-component construction comprising an outer shell and a liner positioned within the shell wherein the shell has a hardness greater than the liner.
2. A non-rotating drill pipe protector for use and the wellbore compris-ing:
a sleeve sized to be placed around a drill string;
said sleeve having an inside diameter (I.D.) having a plurality of grooves for generating a fluid bearing between the I.D, and the drill pipe;
the sleeve having an outside diameter (O.D.) including multiple distinct radius external curved surfaces contoured for increas-ing sliding contact surface area, said contoured surfaces sepa-rated by channels on the O.D.; and a soft elastomer liner on the I.D. of the sleeve.
a sleeve sized to be placed around a drill string;
said sleeve having an inside diameter (I.D.) having a plurality of grooves for generating a fluid bearing between the I.D, and the drill pipe;
the sleeve having an outside diameter (O.D.) including multiple distinct radius external curved surfaces contoured for increas-ing sliding contact surface area, said contoured surfaces sepa-rated by channels on the O.D.; and a soft elastomer liner on the I.D. of the sleeve.
3. The protector of claim 2 wherein the sleeve has low-friction wear pads on the O.D. of the sleeve.
4. The protector of claim 3 wherein the wear pads are fastened to a reinforcing cage embedded within the sleeve.
5. The protective sleeve of claim 1 wherein the shell has hardness in the range of 75 to 123 Rockwell R.
6. The protector of claim 2 wherein the liner comprises multiple strips positioned around the I.D. of the sleeve.
7. The protective sleeve of claim 1 wherein the liner comprises multiple strips positioned around the I.D. of the shell.
8. A drill pipe protector for use in a wellbore comprising:
a substantially cylindrical sleeve sized to be placed around a drill pipe;
the sleeve having an inside diameter (I. D.) having a plurality of grooves for generating a fluid bearing between the I.D. of the sleeve and the drill pipe;
the sleeve having a high-strength low-friction high temperature plastic shell and a soft elastomer liner positioned within the shell; and at least one hinge formed on the shell.
a substantially cylindrical sleeve sized to be placed around a drill pipe;
the sleeve having an inside diameter (I. D.) having a plurality of grooves for generating a fluid bearing between the I.D. of the sleeve and the drill pipe;
the sleeve having a high-strength low-friction high temperature plastic shell and a soft elastomer liner positioned within the shell; and at least one hinge formed on the shell.
9. The protector of claim 8 wherein the sleeve has an outside diameter (O.D.) which has a plurality of distinct radius curved surfaces.
10. The protector of claim 8 wherein the liner comprises multiple strips positioned around the I.D. of the protector sleeve.
11. The protector of claim 8 wherein the shell has a hardness in the range of 75 Shore A to 123 Rockwell R.
12. The protector of claim 8 wherein the liner has a hardness of 60 Shore A or less.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/407093 | 2003-04-04 | ||
| US10/407,093 US6739415B2 (en) | 1999-01-06 | 2003-04-04 | Drill pipe protector |
| CA002461384A CA2461384C (en) | 2003-04-04 | 2004-03-19 | Drill pipe protector |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002461384A Division CA2461384C (en) | 2003-04-04 | 2004-03-19 | Drill pipe protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2573236A1 true CA2573236A1 (en) | 2004-10-04 |
| CA2573236C CA2573236C (en) | 2010-02-09 |
Family
ID=37806603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2573236A Expired - Lifetime CA2573236C (en) | 2003-04-04 | 2004-03-19 | Drill pipe protector |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2573236C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2586714B (en) | 2018-06-12 | 2022-10-12 | Halliburton Energy Services Inc | Molded composite inner liner for metallic sleeves |
-
2004
- 2004-03-19 CA CA2573236A patent/CA2573236C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2573236C (en) | 2010-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |