Fluid-powered linear motor with rotary pistons and motion rectifier and synthetic diamond bearing assemblies
Abstract
A fluid-powered linear motor with rotary pistons is disclosed. An application is for a downhole motor but it could be used in other applications. Rotational pistons provide increased torque generation as the torque generated is proportional to motor length. Since downhole drills are long (generally up to a maximum length of 30 ft.), a high-torque motor can be produced using this method. A pressurized fluid is used to drive the piston assemblies to produce bit shaft power. This concept employs rotary pistons and a mechanical rectifier to convert the rotational reciprocation produced by a reciprocating rotational piston into continuous rotary motion. Integration of synthetic diamond bearing assemblies into the motor allows for reduced friction and abrasive drilling fluid compatibility.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1892843
- Patent Number(s):
- 11306749
- Application Number:
- 17/013,306
- Assignee:
- National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03B - MACHINES OR ENGINES FOR LIQUIDS
- DOE Contract Number:
- NA0003525
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 09/04/2020
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Raymond, David W. Fluid-powered linear motor with rotary pistons and motion rectifier and synthetic diamond bearing assemblies. United States: N. p., 2022.
Web.
Raymond, David W. Fluid-powered linear motor with rotary pistons and motion rectifier and synthetic diamond bearing assemblies. United States.
Raymond, David W. Tue .
"Fluid-powered linear motor with rotary pistons and motion rectifier and synthetic diamond bearing assemblies". United States. https://www.osti.gov/servlets/purl/1892843.
@article{osti_1892843,
title = {Fluid-powered linear motor with rotary pistons and motion rectifier and synthetic diamond bearing assemblies},
author = {Raymond, David W.},
abstractNote = {A fluid-powered linear motor with rotary pistons is disclosed. An application is for a downhole motor but it could be used in other applications. Rotational pistons provide increased torque generation as the torque generated is proportional to motor length. Since downhole drills are long (generally up to a maximum length of 30 ft.), a high-torque motor can be produced using this method. A pressurized fluid is used to drive the piston assemblies to produce bit shaft power. This concept employs rotary pistons and a mechanical rectifier to convert the rotational reciprocation produced by a reciprocating rotational piston into continuous rotary motion. Integration of synthetic diamond bearing assemblies into the motor allows for reduced friction and abrasive drilling fluid compatibility.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 19 00:00:00 EDT 2022},
month = {Tue Apr 19 00:00:00 EDT 2022}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Percussion tool for generic downhole fluid motors
patent, June 2004
- Martini, Leo A.
- US Patent Document 6,742,605
Fluid powered linear piston motor with harmonic coupling
patent, September 2016
- Raymond, David W.
- US Patent Document 9,447,798
Fluid-powered linear motor with rotary pistons and motion rectifier
patent, September 2020
- Raymond, David W.
- US Patent Document 10,767,670
Drive system
patent, August 2008
- Downie, Andrew McPherson; Pezzani, Guido Ernesto
- US Patent Document 7,416,034
Compound Axial Torsional Hydraulic Actuator
patent, October 1973
- Yeakley, Lester M.
- US Patent Document 3,766,831
Harmonic drive linear actuator
patent, May 2009
- Baudendistel, Thomas; Klode, Harald
- US Patent Document 7,527,130
Rotary actuator
patent, June 1997
- Takeuchi, Terumasa; Nozawa, Yoshinori; Maki, Daizyu
- US Patent Document 5,634,390
High performance bearing pad for thrust bearing
patent, October 1993
- Hall, David R.
- US Patent Document 5,253,939
Method for manufacturing a diamond thrust bearing
patent, December 1993
- Hall, David R.
- US Patent Document 5,267,398
Automatic Air-Feed Control for Rock Drills
patent, April 1922
- Smith, William A.
- US Patent Document 1,413,499