Research on Rapid Identification and Evaluation Technology for Gas Formation during Underbalanced Drilling

Table 2

Real-time logging interpretation results for PL113 well intervals.

MD; (m)	Average effective porosity; (%)	Outlet drilling fluid density		Outlet drilling fluid temperature		Interpreted result
		Variation; (g/cm^3)	Drop; (%)	Variation; (°C)	Drop; (%)
2564–2569	6.07	1.50 to 1.31	12.67	45.47 to 42.71	6.07	Poor gas zone
2581–2584	6.36	1.49 to 1.37	8.05	46.33 to 43.57	5.96	Poor gas zone
2613–2618	5.18	1.46 to 1.36	6.84	46.05 to 44.51	3.34	Gas-water zone