Drilling bits for plastic formations

Details Drilling bits for plastic formations Drilling bits for plastic formations

1979-01-29

1980-12-30

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175331, 175 57, E21B 1046

Patent

active

042417988

ABSTRACT:
Drilling bits are disclosed which are particularly efficient drilling devices when used in soft plastic underground formations which normally are difficult or impossible to drill with conventional drilling bits. The bits of this invention are characterized by having relief openings formed in the individual cutting elements to provide extrusion of the soft formation face into removable chips.

REFERENCES:
patent: 1491876 (1924-04-01), Neely
patent: 1621921 (1927-03-01), Black
patent: 1660988 (1928-02-01), Butler
patent: 1797690 (1931-03-01), McLean
patent: 3163242 (1964-12-01), Graham et al.
patent: 3696875 (1972-10-01), Cortes
patent: 3743038 (1973-07-01), Bennett

Affiliated with

Also associated with

Rating

Drilling bits for plastic formations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drilling bits for plastic formations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling bits for plastic formations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2885