Apparatus and method for drilling into the sidewall of a drill hole

Patent · Tue Oct 19 00:00:00 EDT 1982

OSTI ID:7048837

Broding, R A; Jageler, A E; Kilmer, L G

A method of core cutting and apparatus operable on a seven conductor wireline logging cable for drilling a hole in the sidewall of a drill hole which comprises an elongated housing with a hydraulically operated backup shoe mounted within the housing for wedging the housing at a selected location in the drill hole and a hydraulic motor with a drilling bit connected thereto for rotation by the hydraulic motor. Hydraulic means are mounted within the housing and are connected to the hydraulic motor for moving the bit into drilling engagement with the sidewall of the drill hole. In one embodiment, a core cutting bit is connected to the motor for obtaining a sample of a subterranean formation at the selected location.

• Assignee: Standard Oil Co. (Indiana)
• Patent Number(s): US 4354558
• OSTI ID: 7048837
• Resource Relation: Patent File Date: Filed date 25 Jun 1979; Other Information: PAT-APPL-051485
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
42 ENGINEERING
BOREHOLES
DIRECTIONAL DRILLING
DRILLING EQUIPMENT
DESIGN
DRILL BITS
GEOLOGICAL SURVEYS
WALLS
CAVITIES
DRILLING
EQUIPMENT
SURVEYS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)