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Abstract

AAPG Methods in Exploration No. 14, Chapter 15: Flexible Well-path Planning for Horizontal and Extended-reach Wells , by E. J. Stockhausen, G. E. Smith, J. A. Peters, and E. T. Bornemann, Pages 227 - 248
from:
AAPG Methods in Exploration No. 14: Horizontal Wells: Focus on the Reservoir, Edited by T. R. Carr, E. P. Mason, and C. T. Feazel
Copyright copyrght.jpg (4253 bytes)2003 by The American Association of Petroleum Geologists. All rights reserved.

Chapter 15
Flexible Well-path Planning for Horizontal and Extended-reach Wells

E. J. Stockhausen, G. E. Smith, J. A. Peters
ChevronTexaco Exploration and Production Technology Company
Houston, Texas, U.S.A.

E. T. Bornemann
Schlumberger Oilfield Services
Houston, Texas, U.S.A.

ABSTRACT

The value and success of horizontal and extended-reach wells depend on overall well-path design and the effective wellbore placement in the reservoir. Significant incremental value can be Previous HitobtainedTop by increasing the precision of well placements within or across stratigraphic lobes and by positioning the wells relative to fluid contacts. Four main factors that significantly impact the success of these types of wells are (1) geologic uncertainty, (2) borehole-position uncertainty, (3) unanticipated buildup rates and doglegs, and (4) communication and understanding between the geologist and the directional driller.

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