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Advanced Techniques for Drilling 1,000-Ft Small Diameter Horizontal Holes in a Coal Seam. Volume 2. Survey System Design and Fabrication.

Authors
Anonymous
Source
NTIS: PB 249 714 Available for Reference At Bureau Libraries :167 pages
Link
NIOSHTIC No.
10008090
Abstract
The objective of this work was to design, fabricate, and field test a model of a telemetry survey system configured for use in a fenix & scisson program for the investigation, testing, and evaluation of horizontal drilling control techniques in coalbeds. The device did not perform satisfactorily in field tests because of malfunctioning of certain components. Further development is needed. The Bureau of Mines methane research program has made the delimination uncontrolled methane emission in coal mines one of its major objectives. The Bureau's immediate effort is toward the prevention of disastrous explosions, but the ultimate goal is to provide the technology needed to predrain the methane far in advance of active mining.
Publication Date
19750101
Document Type
CP; Final Contract Report;
Fiscal Year
1975
NTIS Accession No.
PB-249714
NTIS Price
A09
Identifying No.
OFR 17(2)-76
NIOSH Division
PRC;
Source Name
NTIS: PB 249 714 Available for Reference At Bureau Libraries
Performing Organization
Telcom, Inc.
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