Method of Calculating Secondary Porosity of Reef Limestone Reservoir by Casting Thin Section Calibrating Nuclear Magnetic Spectrum

Table 2

Statistical tables of surface porosity, secondary surface porosity, and total porosity by logging interpretation of 25 casting thin sections in well DF51.

No.	Depth (m)	Surface porosity (%)	Secondary surface porosity (%)	Total porosity by logging interpretation (%)
1	1389.8	8.8	4.5	13.42
2	1389.93	12.3	5.5	14.14
3	1391.2	7.5	6	17.15
4	1399.5	21	12	30.08
5	1400.3	20	10	28.67
6	1400.55	17	7	26.89
7	1402.15	9	6	11.56
8	1404.55	8	5.5	10.4
9	1409.49	16	10	20.38
10	1410.51	11.5	9.5	15.15
11	1412.66	16	11	21.55
12	1421.07	18	8.5	21.46
13	1422.01	15.5	5	22.27
14	1428.52	10	2	17.86
15	1430.84	15	4.5	24.45
16	1434.39	12	1	20.46
17	1435.05	21	1	28.66
18	1437.39	25	16	32.29
19	1441.29	15	5	20.21
20	1442.54	6.5	5	14.11
21	1446.94	18	12	24.94
22	1449.45	17	8	23.46
23	1453.24	14	6	18.48
24	1459.99	24	14	30.23
25	1465.92	12	10	13.71