Reservoir Quality, Lithotype Assessment, and Geochemical Source Rock Analysis: Insights from Well Logs and Pyrolysis Data, Karama Field, North-Western Desert, Egypt

Table 2

The pyrolysis analysis data for the available source rock formations in the Karama oil field.

Well name	Formation	Depth	TOC^1	S1^2	S2^3	S3^4		Tmax^5	HI^6	OI^7	PI^8
K-1X	AR/F	7150	1.54	0.63	4.32	1.5	4.95	428	281	97	0.13
		7170	2.8	1.02	21.4	0.91	22.42	421	764	33	0.05
		7180	2.95	1.21	23.85	0.74	25.06	422	808	25	0.05
		7230	3.6	1.62	32.87	0.75	34.49	421	913	21	0.05
		7250	1.47	0.2	4.23	0.8	4.43	430	288	54	0.05
	AR/G	7300	0.64	0.27	0.77	0.76	1.04	429	120	119	0.26
		7350	0.52	0.12	0.75	0.57	0.87	376	144	110	0.14
		7400	0.72	0.25	1.99	1.22	2.24	432	276	169	0.11
		7450	0.64	0.25	1.91	0.5	2.16	429	298	78	0.12
		7550	0.8	0.28	1.65	0.49	1.93	431	206	61	0.15
	U. Bahariya	7720	0.64	0.44	1.69	1.41	2.13	419	264	220	0.21
		7750	0.48	0.16	0.92	0.3	1.08	391	192	63	0.15
		7780	0.62	0.2	1.19	0.4	1.39	434	19	65	0.14
		7850	0.7	0.17	1.34	0.39	1.51	433	19	56	0.11
		8000	0.62	0.17	1	0.43	1.17	432	161	69	0.15
		8050	0.66	0.23	1.35	0.8	1.58	435	205	121	0.15
		8150	0.55	0.15	0.74	0.53	0.89	382	135	96	0.17
		8350	0.63	0.18	1.24	0.99	1.42	381	197	157	0.13
		8400	0.98	0.22	1.57	0.8	1.79	430	160	82	0.12
		8550	0.8	0.25	1.84	0.71	2.09	432	230	89	0.12
		8600	0.67	0.18	1.31	0.63	1.49	383	196	94	0.12
KSW-8	AR/F	7040	5.84	21.21	0.22	425	27.05	442	—	—	—
		7050	1.47	15.42	0.11	426	15.89	431	—	—	—
		7055	1.43	14.26	0.07	427	14.69	436	—	—	—
		7060	3.93	16.56	0.15	426	20.49	441	766	55	—
		7065	1.32	11.94	0.11	424	12.26	433	589	43	—
		7070	2.29	11.74	0.22	426	12.03	435	—	—	—

¹Total Organic Carbon (weight percent of the whole rock). ²Low hydrocarbon yield (mg hydrocarbon/g rock). ³High hydrocarbon yield (mg hydrocarbon/g rock). ⁴Organic carbon dioxide yield (mg hydrocarbon/g rock). ⁵Temperature at which maximum emission of high-temperature (S2) hydrocarbon occurs (deg.C.). ⁶Hydrogen index (mg hydrocarbon/g TOC). ⁷Oxygen index (mg CO₂/g TOC). ⁸Production index ().