Well drilling tool

Details Well drilling tool Well drilling tool

1993-07-02

1994-07-26

Neuder, William P.

Boring or penetrating the earth

With tool shaft detail

175374, 175425, E21B 4300

Patent

active

053320506

ABSTRACT:
The invention relates to improvement in well drilling tools to prevent drilling fluids and solid particles present in a subterranean location from adhering to drilling equipment. A nickel-phosphorus coating is deposited by an electroless plating process on the entire surface of the tool, so as to substantially reduce porosity of the tool and prevent penetration of the foreign matter into the ferrous core of the tool.

REFERENCES:
patent: 4245698 (1981-01-01), Berkowitz et al.
patent: 4830889 (1989-05-01), Henry et al.
patent: 4956238 (1990-09-01), Griffin

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