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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 13 (1929)

Issue: 2. (February)

First Page: 109

Last Page: 116

Title: Courses of Drill Holes

Author(s): Martin Van Couvering (2)

Abstract:

The investigation into the courses of drill holes, reported in this paper, has shown that several different factors are causes of deflections from the vertical, the principal causes being the application of too much pressure to the drilling bit and the disposition of the bit to follow down the dip of the strata. As a result, wells drilled in good locations at the surface may be deflected into unproductive formations, or the opposite may be true. Correlations based on the assumption that all drill holes are vertical may be extremely misleading, especially where great depths are attained. No means are known at present which will assure the drilling of vertical holes or the deflection of holes in predetermined directions.

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