Core taking apparatus

Patent · Tue Jan 07 04:00:00 EST 1969

OSTI ID:5650584

Mark, L

A core-taking apparatus has an outer rotatable and driven core barrel with an inner core barrel assembly. It includes a collecting core barrel mounted in the outer barrel and supported by a bearing so as to be nonrotatable with the outer barrel while drilling. The inner core barrel assembly is removable from the outer core barrel by a retrieving assembly. Latching fingers carried by the outer barrel and self-urged inward engage a shoulder on the inner core barrel assembly and normally retain the inner core barrel assembly from upward movement, but are released by the retrieving assembly. The nonrotatable character of the collecting core barrel prevents damage to the collected core and obviates injury to the latching fingers and the shoulder which they engage. (2 claims)

• Assignee: Sprague and Henwood Inc.
• Patent Number(s): US 3420322
• OSTI ID: 5650584
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CORING EQUIPMENT
DAMAGE
DESIGN
DRILL CORES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
MATERIALS HANDLING
NATURAL GAS WELLS
OIL WELLS
RECOVERY
RETRIEVAL SYSTEMS
ROTARY DRILLING
WELLS