Hydraulic stabilizer for bore hole tool

Patent · Tue Oct 11 04:00:00 EDT 1988

OSTI ID:6804614

Lynde, G D; Foster, B E

This patent decribes an apparatus for stabilizing a tubular string within a casing in a well bore; a cylindrical tubular mandrel adjacent an end of the string; a pair of sleeve-like carriers mounted on the mandrel in longitudinally spaced relation to form upper and lower carriers, one of the carriers being mounted for sliding movement along the mandrel toward and away from the other carriers; each of the carriers including a body secured to the mandrel for rotation therewith, a housing mounted on the body, and bearing means between the body and housing permitting relative rotation therebetween; a plurality of circumferentially spaced shoes mounted between the carriers positioned radially outwardly of the mandrel and adjacent the inner peripheral surface of the casing; separate linkage means for each of the carriers extending between the shoes and the housing of each carrier for urging the shoes radially outwardly into engagement with the inner peripheral surface of the casing upon longitudinal movement of the one carrier along the mandrel toward the other carrier and permitting rotation of the mandrel and carrier bodies relative to the shoes when the shoes are in engagement with the casing; and fluid pressure actuated means associated with the one carrier and responsive to fluid pressure from the mandrel to urge the one carrier along the mandrel toward the other carrier for radially expanding the shoes.

• Assignee: Tri-State Oil Tool Industries, Inc., Bossier City, LA
• Patent Number(s): US 4776394
• OSTI ID: 6804614
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BEARINGS
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FLUID MECHANICS
HYDRAULIC EQUIPMENT
HYDRAULICS
INSTALLATION
MATERIALS HANDLING EQUIPMENT
MECHANICS
MOTION
NATURAL GAS WELLS
OIL WELLS
PIPES
ROTATION
SLEEVES
STABILIZATION
WELL CASINGS
WELLS