Surface control bent sub for directional drilling of petroleum wells
Abstract
Directional drilling apparatus for incorporation in a drill string, wherein a lower apparatus section is angularly deviated from vertical by cam action and wherein rotational displacement of the angularly deviated apparatus section is overcome by additional cam action, the apparatus being operated by successive increases and decreases of internal drill string pressure.
- Inventors:
- Issue Date:
- Research Org.:
- US Dept. of Energy (USDOE), Washington, DC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 865887
- Patent Number(s):
- 4596294
- Application Number:
- 06/368,993
- 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; control; bent; directional; drilling; petroleum; apparatus; incorporation; drill; string; section; angularly; deviated; vertical; action; rotational; displacement; overcome; additional; operated; successive; increases; decreases; internal; pressure; string pressure; drill string; rotational displacement; drilling apparatus; directional drilling; surface control; /175/
Citation Formats
Russell, Larry R. Surface control bent sub for directional drilling of petroleum wells. United States: N. p., 1986.
Web.
Russell, Larry R. Surface control bent sub for directional drilling of petroleum wells. United States.
Russell, Larry R. Wed .
"Surface control bent sub for directional drilling of petroleum wells". United States. https://www.osti.gov/servlets/purl/865887.
@article{osti_865887,
title = {Surface control bent sub for directional drilling of petroleum wells},
author = {Russell, Larry R.},
abstractNote = {Directional drilling apparatus for incorporation in a drill string, wherein a lower apparatus section is angularly deviated from vertical by cam action and wherein rotational displacement of the angularly deviated apparatus section is overcome by additional cam action, the apparatus being operated by successive increases and decreases of internal drill string pressure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}
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