Drilling assembly for percussion drilling of deep wells
Abstract
A percussion drill assembly for down hole drilling is described comprising: an elongated chamber defining a barrel assembly; a top sub assembly connected to one end of the barrel assembly and having passage means; a driver sub assembly connected to the other end of the barrel assembly; a hammer assembly disposed within the chamber and having an axially extending flushing passage and fluid intake and fluid exhaust passages; an anvil and bit shank assembly disposed within the chamber and having an axial flushing passage disposed within the driver sub assembly; a fluid distributing means disposed within the barrel assembly to receive an operating fluid for causing reciprocal movement of the hammer assembly; a tube extending through the flushing passage of the distributing means and the hammer assembly for passing a flushing fluid therethrough separate from the operating fluid.
- Inventors:
- Publication Date:
- OSTI Identifier:
- 5826174
- Patent Number(s):
- US 4694911
- Assignee:
- NOV; NOV-87-083356; EDB-88-002453
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: Filed date 25 Feb 1985
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; PERCUSSIVE DRILLS; DESIGN; HYDRAULICS; OPERATION; CUTTINGS REMOVAL; DRILL BITS; DRILLING FLUIDS; FLUID FLOW; ROCK DRILLING; WELL DRILLING; DRILLING; DRILLING EQUIPMENT; DRILLS; EQUIPMENT; FLUID MECHANICS; FLUIDS; MECHANICS; REMOVAL; 420206* - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)
Citation Formats
Kennedy, J D. Drilling assembly for percussion drilling of deep wells. United States: N. p., 1987.
Web.
Kennedy, J D. Drilling assembly for percussion drilling of deep wells. United States.
Kennedy, J D. 1987.
"Drilling assembly for percussion drilling of deep wells". United States.
@article{osti_5826174,
title = {Drilling assembly for percussion drilling of deep wells},
author = {Kennedy, J D},
abstractNote = {A percussion drill assembly for down hole drilling is described comprising: an elongated chamber defining a barrel assembly; a top sub assembly connected to one end of the barrel assembly and having passage means; a driver sub assembly connected to the other end of the barrel assembly; a hammer assembly disposed within the chamber and having an axially extending flushing passage and fluid intake and fluid exhaust passages; an anvil and bit shank assembly disposed within the chamber and having an axial flushing passage disposed within the driver sub assembly; a fluid distributing means disposed within the barrel assembly to receive an operating fluid for causing reciprocal movement of the hammer assembly; a tube extending through the flushing passage of the distributing means and the hammer assembly for passing a flushing fluid therethrough separate from the operating fluid.},
doi = {},
url = {https://www.osti.gov/biblio/5826174},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 22 00:00:00 EDT 1987},
month = {Tue Sep 22 00:00:00 EDT 1987}
}