Downhole well tool and anchoring assembly

Patent · Tue Nov 15 04:00:00 EST 1983

OSTI ID:5294312

Pratt, D K; Terrell, J B

Downhole well tools and anchoring means therefore are disclosed, including a chemical cutting tool having improved slip actuating and slip array assemblies. The cutting tool includes a slip shaft provided with fluid passageway and having a slip array slidably disposed thereon. The tool further includes slip expansion means secured to the shaft adjacent to the slip array. A piston sleeve is slidably disposed on the shaft and connected to the slip array and defines a piston chamber in fluid communication with the shaft passageway such that the application of fluid pressure drives the piston sleeve and slip array to a deployed position in which the slip array is expanded. Biasing means located externally of the piston sleeve function to bias the piston sleeve to a retracted position upon release of fluid pressure. The slip array is comprised of spaced slip segments which are biased inwardly by means of cantilever springs secured to a structural member of the logging tool.

• Assignee: Gearhart Industries, Inc.
• Patent Number(s): US 4415029
• OSTI ID: 5294312
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200 -- Petroleum-- Reserves
Geology
& Exploration
020300* -- Petroleum-- Drilling & Production
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CUTTING TOOLS
DESIGN
DRILLING EQUIPMENT
EQUIPMENT
FABRICATION
FASTENING
JOINING
MWD SYSTEMS
OIL WELLS
TOOLS
WELLS