Method for determining optimum horizontal drilling direction and

Details Method for determining optimum horizontal drilling direction and Method for determining optimum horizontal drilling direction and

1996-04-15

1998-04-21

Brock, Michael

Measuring and testing

Borehole or drilling

Formation logging

E21B 4906

Patent

active

057419671

ABSTRACT:
A method for analyzing the microfractures of a sandstone formation is provided which determines an optimal horizontal drilling direction. The microfractures are analyzed with a photomultiplier-based imagining of electron-beam induced luminescence method, or scanned CL. The microfractures are categorized and a weighted average azimuth of the microfractures is generated which strongly correlates with macrofractures of the same formation. A method for classifying cementation of a sandstone formation is also provided which assists in defining an optimum drilling horizon. Suitable fracture transmissivities are provided in formations with primarily with synkinematic and prekinematic cementation.

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