Method of horizontal drilling
US5165491A · kind A · utility
97Cited by
14References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Apr 29, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method is disclosed for drilling a well bore having a vertical portion, a curved kick-off portion, and a horizontal portion. The length of the horizontal portion is extended by using drill pipe having an aluminum tube and steel tool joints to reduce the weight of the pipe string in the horizontal portion and reduce the friction resisting movement of the drill pipe along the low side of the well bore. In addition, the length of the joints of aluminum drill pipe is reduced to between 14-16 feet to substantially increase the buckling strength of each joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.