Apparatus for drilling straight portion of a deviated hole

Patent · Tue Aug 10 00:00:00 EDT 1982

OSTI ID:7048579

Lyons, W C; Scurlock, S L; Zublin, E A

A guide is disclosed for drilling a straight section of a bore hole deflected from the vertical. The apparatus comprises either a normally straight or a curved-straight tubular member which has a plurality of generally circumferential cuts disposed along the length of the guide. The cuts allow the guide to be bent sufficiently to enter and traverse a short radius curve and then return to its normal configuration for guiding the drilling of the straight portion of the deflected bore hole. A clutch mechanism disposed in the drill guide permits engagement of the guide by the drill string for orientation of the guide.

• Assignee: Drilling Dev Inc
• Patent Number(s): US 4343369
• OSTI ID: 7048579
• Resource Relation: Patent File Date: Filed date 19 Sep 1980; Other Information: PAT-APPL-188728
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DRILL PIPES
POSITIONING
DRILLING EQUIPMENT
DESIGN
BOREHOLES
DRILLING
FLEXIBILITY
ORIENTATION
CAVITIES
EQUIPMENT
MECHANICAL PROPERTIES
PIPES
TENSILE PROPERTIES
020300* - Petroleum- Drilling & Production