CA2487182A1 - Hydraulic underreamer and sections for use therein - Google Patents
Hydraulic underreamer and sections for use therein Download PDFInfo
- Publication number
- CA2487182A1 CA2487182A1 CA002487182A CA2487182A CA2487182A1 CA 2487182 A1 CA2487182 A1 CA 2487182A1 CA 002487182 A CA002487182 A CA 002487182A CA 2487182 A CA2487182 A CA 2487182A CA 2487182 A1 CA2487182 A1 CA 2487182A1
- Authority
- CA
- Canada
- Prior art keywords
- sections
- underreamer
- cutting
- designed
- jet pump
- 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
Landscapes
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A hydraulic underreamer for enlarging a wellbore (18) includes improved packer (20), cutting (24), jet pump (26), and mill (28) sections. The packer section (20) is designed to minimize wear on its sealing elements (36, 38), the cutting (24) and jet pump (26) sections are designed to minimize pressure requirements and optimize hydraulic efficiency, and the mill section (28) has a removable center assembly which allows effective well control when pulling the underreamer out of a "live" well filled with gas, such as methane.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11962499P | 1999-02-11 | 1999-02-11 | |
| US60/119,624 | 1999-02-11 | ||
| US09/385,614 | 1999-08-30 | ||
| US09/385,614 US6138777A (en) | 1999-02-11 | 1999-08-30 | Hydraulic underreamer and sections for use therein |
| CA002355103A CA2355103C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002355103A Division CA2355103C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2487182A1 true CA2487182A1 (en) | 2000-08-17 |
| CA2487182C CA2487182C (en) | 2005-10-25 |
Family
ID=34139155
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002487182A Expired - Lifetime CA2487182C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
| CA002487169A Expired - Lifetime CA2487169C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
| CA002487158A Expired - Lifetime CA2487158C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
| CA002487155A Expired - Lifetime CA2487155C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002487169A Expired - Lifetime CA2487169C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
| CA002487158A Expired - Lifetime CA2487158C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
| CA002487155A Expired - Lifetime CA2487155C (en) | 1999-02-11 | 2000-02-02 | Hydraulic underreamer and sections for use therein |
Country Status (1)
| Country | Link |
|---|---|
| CA (4) | CA2487182C (en) |
-
2000
- 2000-02-02 CA CA002487182A patent/CA2487182C/en not_active Expired - Lifetime
- 2000-02-02 CA CA002487169A patent/CA2487169C/en not_active Expired - Lifetime
- 2000-02-02 CA CA002487158A patent/CA2487158C/en not_active Expired - Lifetime
- 2000-02-02 CA CA002487155A patent/CA2487155C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2487169C (en) | 2005-10-18 |
| CA2487155C (en) | 2005-08-16 |
| CA2487182C (en) | 2005-10-25 |
| CA2487158C (en) | 2005-11-15 |
| CA2487155A1 (en) | 2000-08-17 |
| CA2487169A1 (en) | 2000-08-17 |
| CA2487158A1 (en) | 2000-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20200203 |
|
| MKEX | Expiry |
Effective date: 20200203 |