Compression shock absorber device

Patent · Tue Mar 24 04:00:00 EST 1981

OSTI ID:6001940

Kimmel, J; Toelke, L

A wellbore drill string shock absorber device for absorbing drill bit vibratory displacement is disclosed. The shock absorber consists of a pair of slidably, e.g., telescopingly, associated longitudinal elements, one of which is connectable to a drill string therabove and the other of which is connectable to a drill bit therebelow, such elements being interengageably interconnected for common rotation about a longitudinal, e.g., wellbore, axis and for selectively limited relative reciprocal displacement longitudinally with respect to each other along such axis, and such elements together defining a shock absorber work chamber within longitudinal confinement wall portions thereof, e.g., an annular cylindrical chamber, of varying selective maximum and minimum operative longitudinal dimension and corresponding volume in dependence upon such displacement of the elements and in turn of such wall portions, and temporarily internally compressible and resilient shock absorbing means, e.g.,tal technical market potential is 3220.5 MW, which is equivalent to 129,946 barrels per day equivalent (BPDE); the total economic market potential is 64.4% of the technical potential, or 2072.4 MW, equivalent to 83,621 BPDE; and the lack of an operating history-detailing system reliability, safety, and operating costs-iment and test components; technology testing; analytmperature fatigue stren obtained.

• Assignee: Well Control, InC.
• Patent Number(s): US 4257245
• OSTI ID: 6001940
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420206* -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
DESIGN
DRILL BITS
DRILLING
DRILLING EQUIPMENT
ELASTOMERS
EQUIPMENT
MECHANICAL VIBRATIONS
MOTION
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
ROTATION
RUBBERS
SHOCK ABSORBERS
SILICONES
SILOXANES
WELL DRILLING