Hydraulic ram pumps and Sling Pumps

Profile -- Cable Tool Drilling, 9/18/94What is the contract mechanism?Are there other potential partners?Are there potential international partners?Intellectual Property:Who owns the patent for this technology?Are there other patent owners?Is there a patent number for this technology?Cost Sharing:What is the background of this technology?Developed in China about 4000 years ago, cable tool drilling is the oldest drilling method. Until thetwentieth century it was also one of few drilling methods, and it is still in common use today. The drivebarrel method of cable tool drilling is a relatively new development. It first appeared in the early 1940s insoutheastern Washington state where many areas of unconsolidated soil exist above the unsaturated zone(the soil above the water table). In the Hanford formation, the unsaturated zone is composed mostly ofunconsolidated soils such as sands and gravels, ideally suited for drive barreling.This method has been further developed at Hanford. In the early 1970s, heavy 5-inch- outside-diametersplit spoon samplers were first developed to improve the quality (representativeness) of geologicsamples. After Hanford changed its mission to focus on environmental cleanup, the drive barrel methodof cable tool drilling was further adapted for use in contaminated zones. This method is especially wellsuited for contaminated areas because it is one of the few drilling methods that does not use anycirculation fluids which would spread contamination. The only other such methods are auger drilling andsonic drilling. Of these two, only sonic is able to contain the contaminants as effectively as cable tooldoes. Cable tool drilling is also being used at other DOE sites such as Fernald, Idaho NationalEngineering Laboratory, and Rocky Flats, but nowhere is it being used to the extent that it is used atHanford.References:Driscoll, F. G., Groundwater and Wells, 2nd Edition, St. Paul, Minnesota: Johnson Filtration SystemsInc., 1986, pp. 268-277.http://www.drilshop.com/holes/cabtool.html (12 of 13) [1/13/2005 12:48:35 PM]