Influence of well tolerance is not significant on well location in the vertical plane, especially when a well is drilled within ±25% of the pay zone center.
Reserves, ie., ultimate oil production may depend on the well location in the Vertical plane, depending upon the reservoir mechanism.
It is physically possible to drill multi leg wells with ultra-short, short, and medium radius wells.
Decision regarding multiple wells should depend upon differential depletion and operational strategy.
For a differential depletion scheme, an appropriate completion scheme may be necessary.
Figures & Tables
Geological Aspects of Horizontal Drilling
This publication consists of 13 papers that provide information on horizontal drilling from a geological standpoint. The publication begins with basic definitions, history, and classifications of horizontal drilling, and moves into a more etailed look at horizontal well spacing and placement, and factors that influence productivity. There are field histories and specific field studies, and the publication includes a paper that provides a detailed look at source rocks, carbonates, and sandstones.