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The document discusses signs that may indicate increasing formation pressure while drilling: 1) An increase in the rate of penetration can signal rising pressure, though increases in mud weight or bit weight can mask this. Careful observation of drilling rate or the "d" exponent is needed. 2) A sudden increase in drilling rate, such as 200-300%, in soft formations may indicate a drilling break into a permeable reservoir. In hard formations, drilling rate may decrease upon entering a reservoir. 3) Risin

Author

andrew

Language

EN