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Title: 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:
 [1]
  1. (6025 Edgemor, Suite C, Houston, TX 77081)
Issue Date:
Research Org.:
LARRY RUSSELL & ASSOC
OSTI Identifier:
864717
Patent Number(s):
4407377
Assignee:
Russell; Larry R. (6025 Edgemor, Suite C, Houston, TX 77081) OSTI
DOE Contract Number:  
AC19-80BC10175
Resource Type:
Patent
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 = {1983},
month = {1}
}

Patent:

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