Apparatus for lowering and retrieving a core barrel
Patent
·
OSTI ID:6846451
A lowering and retrieving system is described that may be used when core drilling, either up or down, including drilling at any inclination. A flexible seal element is mounted around the periphery of the lowering and retrieving device and looped over a pin on a movable actuator element. The flexible seal element forms a fluid seal with a hollow drill string allowing the lowering and retrieving device to be pumped through the drill string. An elongated spear head on a retractable core barrel contacts and moves the movable actuator element thereby changing the position of the flexible seal element and a fluid channel around the lowering and retrieving device is opened. (11 claims)
- Assignee:
- Boyles Industries Ltd.
- Patent Number(s):
- US 3704756
- OSTI ID:
- 6846451
- Country of Publication:
- United States
- Language:
- English
Similar Records
Retrieving and lowering system for a core barrel
Apparatus for positioning and retrieving a core barrel
Core barrel retrieval
Patent
·
Mon Dec 04 23:00:00 EST 1972
·
OSTI ID:6846450
Apparatus for positioning and retrieving a core barrel
Patent
·
Wed Apr 16 00:00:00 EDT 1975
·
OSTI ID:6612027
Core barrel retrieval
Patent
·
Mon Nov 30 23:00:00 EST 1970
·
OSTI ID:5854454
Related Subjects
02 PETROLEUM
020300 -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CORING EQUIPMENT
DESIGN
DIRECTIONAL DRILLING
DRILL CORES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
RETRIEVAL SYSTEMS
WELL DRILLING
020300 -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CORING EQUIPMENT
DESIGN
DIRECTIONAL DRILLING
DRILL CORES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
RETRIEVAL SYSTEMS
WELL DRILLING