Oil drilling tool

Details Oil drilling tool Oil drilling tool

2007-11-20

2007-11-20

Dang, Hoang (Department: 3672)

Boring or penetrating the earth

With signaling, indicating, testing or measuring

C175S317000, C175S324000, C166S332400

Reexamination Certificate

active

11100891

ABSTRACT:
The present invention comprises a drilling tool assembly for drilling oil comprising a bit release subassembly, a test sleeve that is removable to open and close flow ports, and a profile nipple.

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