Wellpoint jetting head

Details Wellpoint jetting head Wellpoint jetting head

1975-06-26

1976-07-13

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Casing shoe type

175314, 175318, E21B 1714

Patent

active

039688470

ABSTRACT:
A wellpoint jetting head having a plurality of spade-like teeth annularly positioned around the forward end of the head and projecting longitudinally therefrom for dislodging and chopping of the soil during hydrostatic jetting in combination with a tilting, side-to-side, rotational and/or up-and-down manipulation of the wellpoint. The teeth are beveled in a counterbalancing inward-outward staggered arrangement with the cutting surface formed by the teeth ends defining a cutting plane canted with respect to the longitudinal axis of the head. The teeth are circumferentially spaced providing lateral confronting side faces for dislodging soil particulate during use.

REFERENCES:
patent: 443072 (1890-12-01), Chapman
patent: 982491 (1911-01-01), Heggem
patent: 1019357 (1912-03-01), Porter et al.
patent: 1513083 (1924-10-01), Baker
patent: 2028447 (1936-01-01), Griffin
patent: 2196940 (1940-04-01), Potts
patent: 2827264 (1958-03-01), Sitton et al.

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