Transcript Geol 341-342 Introduction - West Virginia University

Geol 342
Stereographic Projection
and
Borehole Failures
Fractures in Wells
FMI Tool (Formation Micro Imager)
OPEN FRACTURES – DEPI #5834 (FAULT
ZONE)
Highly deformed interval
Strike: NNE – SSW
Dips: 30-50°
DRILLING INDUCED FRACTURES – DEPI
#5834
Strike: ENE – WNW
Dips: (high) NNW - SSE
World Stress Map
Stereographic projection
Stereonet
North
270
090
180
Line of intersection