LOW VELOCITY FOAM FLUSH DRILLING

The author gives a brief account of the use of foam in removing cuttings from a borehole during drilling. The system gives low up-hole velocity, retains cuttings in suspension without the need for a dense liquid, utilizes only low volumes of water and compressed air and employs a flushing medium that resists percolation into porous or fissured zones. Details are given of the equipment and method of operation. The foam mixture and wall-stabilising polymer additives generally necessary are described and it is noted that both are completely non-toxic and biodegradable. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00174653
• Corporate Authors:

  Foundation Publications Limited

  7 Ongar Road
  Brentwood CM15 9AU, Essex,   England 
• Authors:
  • England, B
• Publication Date: 1976-4

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 24-25
• Serial:
  • GROUND ENGINEERING
  • Volume: 9
  • Issue Number: 3
  • Publisher: EMAP CONSTRUCT LIMITED
  • ISSN: 0017-4653

Subject/Index Terms

• TRT Terms: Compressed air; Cutting; Drilling; Equipment; Foams; Polymers; Stability (Mechanics); Velocity; Walls
• Old TRIS Terms: Wall stability
• ITRD Terms: 5711: Bore hole; 3871: Drilling; 3674: Equipment; 4502: Expanded material; 5930: Stability; 3368: Wall
• Subject Areas: Construction; Highways;

Filing Info

• Accession Number: 00147636
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Jun 22 1977 12:00AM