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Retractable Core Bit Drilling System.

Authors
Larson-WC; Svendsen-WW; Hoffmeister-JF; Cozad-RE
Source
Pres At SME/AIME Ann Meeting Las Vegas Nevada, 1980 Feb; :16 pages
Link
NIOSHTIC No.
10002309
Abstract
This paper presents the background, history, and current development of a retractable core bit for a wireline drilling system. Design criteria, concept development, and system of the retractable bit system are discussed, including laboratory test results.
Publication Date
19800201
Document Type
OP;
Fiscal Year
1980
NTIS Accession No.
NTIS Price
Identifying No.
OP 13-82
NIOSH Division
TCRC;
Source Name
Pres. At SME/AIME Ann. Meeting, Las Vegas, Nevada, February 24-28, 1980, SME Preprint 80-116, 16 Pp
State
NV;
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