Downhole force generator
Patent
·
OSTI ID:5723260
This patent describes a well tool for generating and applying an upward axial force to an object at a subsurface location in a well flow conductor. It comprises body means, (i) an upper body member having a longitudinal bore extending therethrough and having means at its upper end for attachment to a handling string; (ii) pressure responsive means near the upper end of the upper body member for anchoring the same in the well flow conductor; (iii) piston means on the upper body member a spaced distance below the anchoring means; (iv) a lower body member having a longitudinal bore extending therethrough, and upper portion of the bore being enlarged and in which the piston means of the upper body member is reciprocable, the piston means providing in the cylinder means a power chamber and an exhaust chamber, including seal means and between the upper body member and the lower body member at both the upper and lower ends of the cylinder means.
- Assignee:
- Otis Engineering Corp., Dallas, TX (United States)
- Patent Number(s):
- A; US 5070941
- Application Number:
- PPN: US 7-574815
- OSTI ID:
- 5723260
- Country of Publication:
- United States
- Language:
- English
Similar Records
Coupon holder for corrosion test downhole in a borehole
Downhold cleanout tool
Dynamically partitionable parallel processors
Patent
·
Mon Mar 16 23:00:00 EST 1992
·
OSTI ID:5251156
Downhold cleanout tool
Patent
·
Tue May 15 00:00:00 EDT 1990
·
OSTI ID:6900443
Dynamically partitionable parallel processors
Patent
·
Tue May 15 00:00:00 EDT 1990
·
OSTI ID:6697692