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Title: Dual-rotating eccentric drilling apparatus and method

Abstract

Apparatus and method are described for drilling a borehole. An undersized drill bit mounted eccentrically within the borehole is rotated about its axis in engagement with the bottom of the borehole by means of a downhole motor while the drill bit is simultaneously rotated in a planetary motion about the axis of the borehole.

Inventors:
Publication Date:
OSTI Identifier:
6049389
Patent Number(s):
US 4267893
Assignee:
Union Oil Co Of California
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 27 Aug 1979
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; DRILLING EQUIPMENT; DESIGN; WELL DRILLING; BOREHOLES; DRILL BITS; NATURAL GAS WELLS; OIL WELLS; ROTATION; STABILIZATION; CAVITIES; DRILLING; EQUIPMENT; MOTION; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing

Citation Formats

Mannon, A T. Dual-rotating eccentric drilling apparatus and method. United States: N. p., 1981. Web.
Mannon, A T. Dual-rotating eccentric drilling apparatus and method. United States.
Mannon, A T. 1981. "Dual-rotating eccentric drilling apparatus and method". United States.
@article{osti_6049389,
title = {Dual-rotating eccentric drilling apparatus and method},
author = {Mannon, A T},
abstractNote = {Apparatus and method are described for drilling a borehole. An undersized drill bit mounted eccentrically within the borehole is rotated about its axis in engagement with the bottom of the borehole by means of a downhole motor while the drill bit is simultaneously rotated in a planetary motion about the axis of the borehole.},
doi = {},
url = {https://www.osti.gov/biblio/6049389}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 19 00:00:00 EDT 1981},
month = {Tue May 19 00:00:00 EDT 1981}
}