An Explosive Range Model Based on the Gas Composition, Temperature, and Pressure during Air Drilling

Table 2

Gas content and explosive range of DM001.

Depth (m)	Gas content from gas logging (%)				Explosive range calculated; by the model (%)	Measured total hydrocarbon; value (%)	Carbon dioxide (%)
	Methane	Ethane	Propane	Butane
2024.06	27.21	1.05	0.31	0.16	22.83–64.70	4.78	2.31
2025.23	31.78	1.23	0.87	0.58	18.80–54.16	5.90	1.33
2026.52	48.43	2.85	0.95	0.88	12.17–35.11	7.82	2.54
2027.11	59.39	4.62	1.75	1.28	9.44–27.70	11.21	2.20
2028.90	69.41	5.05	2.87	1.53	7.94–23.48	14.32	2.94
2029.39	87.61	6.74	3.04	2.10	6.34–18.67	14.04	5.34
2030.43	82.98	6.41	2.91	1.93	6.68–19.69	15.88	3.12
2030.98	85.01	6.51	2.82	1.95	6.56–19.28	16.74	4.85
2032.16	86.48	6.52	2.80	1.90	6.47–19.00	16.19	7.36
2033.15	84.25	6.48	2.75	1.82	6.62–19.47	17.86	8.74
2034.35	84.49	6.40	2.70	1.79	6.62–19.45	17.45	9.34
2034.71	87.70	6.91	3.20	2.18	6.29–18.57	13.47	7.40
2036.34	93.40	6.90	2.67	1.64	6.05–17.71	20.97	11.45
2038.31	87.93	6.72	3.09	2.11	6.31–18.60	13.79	11.37
2039.36	88.42	7.02	3.22	2.21	6.23–18.41	12.34	12.48
2039.86	88.95	6.66	3.03	2.05	6.27–18.44	13.62	13.70
2041.01	87.66	5.98	2.47	1.64	6.51–18.99	19.24	15.78
2042.83	87.03	5.91	2.48	1.71	6.55–19.13	17.82	14.59
2043.62	81.31	5.08	1.94	1.23	7.15–20.73	20.07	16.58