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Synopsis:Programme showing the importance of knowing how rocks react to drilling
Shotlist:B&w footage: derricks; drilling; donkey at oil well; colour: CU drill bit and operating room; b&w footage: men drilling; CU to show how drilling works; CU drilling well; digging trench, steel support being laid; road way in coalmine; CU rock to show how vertical pressure moves it sideways; laboratory rig; tube of mud coming out of hole; demonstration using balloon to show how pressure works; trav shot through fractures in sandstone; 10:07:44 drilling real rocks; experiment to show liquid penetration of rock; experiment to show role of good filter cake in uncemented rock; shale under microscope; rolling test to show how quickly shale disperses in water but remains in tact in oil; 10:13:49 foam experiment to show distortion of rock through pressure; WS mountain; caliper logs; aerial over Ula Field,North Sea; drill bit; graphics to show stress around wells; 2 men examining stress fields; GVs mud; 10:18:26 END