Surface controlled blade stabilizer
Abstract
Drill string stabilizer apparatus, controllable to expand and retract entirely from the surface by control of drill string pressure, wherein increase of drill string pressure from the surface closes a valve to create a piston means which is moved down by drill string pressure to expand the stabilizer blades, said valve being opened and the piston moving upward upon reduction of drill string pressure to retract the stabilizer blades. Upward and downward movements of the piston and an actuator sleeve therebelow are controlled by a barrel cam acting between the housing and the actuator sleeve.
- Inventors:
- Issue Date:
- Research Org.:
- US Dept. of Energy (USDOE), Washington, DC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 864717
- Patent Number(s):
- 4407377
- Application Number:
- 06/368,996
- Assignee:
- Russell; Larry R., Houston, TX (United States)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
- DOE Contract Number:
- AC19-80BC10175
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1982 Apr 16
- Country of Publication:
- United States
- Language:
- English
- Subject:
- surface; controlled; blade; stabilizer; drill; string; apparatus; controllable; expand; retract; entirely; control; pressure; increase; closes; valve; create; piston; means; moved; blades; moving; upward; reduction; downward; movements; actuator; sleeve; therebelow; barrel; acting; housing; string pressure; drill string; downward movement; surface control; /175/166/
Citation Formats
Russell, Larry R. Surface controlled blade stabilizer. United States: N. p., 1983.
Web.
Russell, Larry R. Surface controlled blade stabilizer. United States.
Russell, Larry R. Sat .
"Surface controlled blade stabilizer". United States. https://www.osti.gov/servlets/purl/864717.
@article{osti_864717,
title = {Surface controlled blade stabilizer},
author = {Russell, Larry R.},
abstractNote = {Drill string stabilizer apparatus, controllable to expand and retract entirely from the surface by control of drill string pressure, wherein increase of drill string pressure from the surface closes a valve to create a piston means which is moved down by drill string pressure to expand the stabilizer blades, said valve being opened and the piston moving upward upon reduction of drill string pressure to retract the stabilizer blades. Upward and downward movements of the piston and an actuator sleeve therebelow are controlled by a barrel cam acting between the housing and the actuator sleeve.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}
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