Turbodrill with a reduced drilling fluid pressure on a floating

Details Turbodrill with a reduced drilling fluid pressure on a floating Turbodrill with a reduced drilling fluid pressure on a floating

1983-04-18

1985-01-15

Leppink, James A.

Boring or penetrating the earth

With below-ground tool drive prime mover

Fluid rotary type

415502, E21B 402

Patent

active

044933819

ABSTRACT:
A turbodrill of the type having an annular floating piston between a tubular housing and a bit drive shaft for bounding the top of a lubricant chamber and the bottom of a drilling fluid chamber. The lubricant chamber contains oil for lubricating a bearing supporting the drive shaft in the adjacency of its bottom end. The drilling fluid chamber receives a fraction of drilling fluid (i.e. mud) from a turbine located higher in the housing. For making the mud pressure in the drilling fluid chamber approximately equal to the mud pressure in the drill hole (annulus) around the turbodrill, a seal is provided which restricts the influx of the mud from turbine to drilling fluid chamber. Further a passageway is formed through the housing for placing the drilling fluid chamber in constant fluid communication with the annulus.

REFERENCES:
patent: 3659662 (1972-05-01), Dicky
patent: 3741321 (1973-06-01), Slover, Jr. et al.
patent: 3882946 (1975-05-01), Ioannesian et al.
patent: 4114703 (1978-09-01), Matson, Jr. et al.
patent: 4225000 (1980-09-01), Maurer

Affiliated with

Also associated with

Rating

Turbodrill with a reduced drilling fluid pressure on a floating does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Turbodrill with a reduced drilling fluid pressure on a floating , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbodrill with a reduced drilling fluid pressure on a floating will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1477696