U.S. DEPARTMENT OF THE INTERIOR
U.S. GEOLOGICAL SURVEY
The Santa Cruz - Tarija Province of Central South America: Los Monos - Machareti(!) Petroleum System
| HYDROCARBON TYPE | |||||
| MMBOE Ultimate | Oil (MMBOE) | Gas (BCF/MMBOE) | Cond (MMBOE) | ||
| ENTIRE PROVINCE | 4089 | 328
(8%) 78% produced |
18775
/ 3128 (77%) 37% produced |
633
(15%) 38% produced |
|
| "GEOLOGIC PROVINCE" * | |||||
| SubAndean (all "structural" traps) |
477 | 130 (27%) 96% produced |
1779 / 296 (62%) 12% produced |
51 (11%) 4% produced |
|
| Foothills (all "structural" traps) |
2200 | 159 (7%) 73% produced |
9980 / 1663
(76%) 54% produced |
377 (17%) 53% produced |
|
| Tarija Basin (mostly "anticline" traps) |
1349 | 30 (2%) 34% produced |
6745 / 1124
(83%) 17% produced |
194 (15%) 18% produced |
|
| Chaco Basin (mostly "anticline" traps) |
50 | 4 (8%) 40% produced |
224 / 37 (74%) 52% produced |
9 (18%) 48% produced |
|
| Carandaity Basin (Paraguay) (trap type not disclosed) |
2 | 0 | 10.5 / 1.75
(100%) none produced |
0 | |
| Beni Basin (far NW) ("anticline" trap) |
5 | 0 | 25 / 4 (80%) none produced |
1 (20%) | |
| Michicola - Boqueron (far SW) ("recumbent fold" trap) |
6 | 4.4 (71%) 90% produced |
11 / 1.8 (29%) 97% produced |
0 | |
| AGE HORIZON | MMBOE Ultimate | Average Porosity (%) |
Average Permeability (md) arith (geom) |
||
| INDETERMINABLE ALLOCATION | 2323 (57%) | ||||
| Tertiary | 116 (3%) | 19 | 165 (96) | ||
| Cretaceous | 77 (2%) | 22 | 138 (116) | ||
| Permo-Triassic | 1 (trace) | 23 | 200 (200) | ||
| Carboniferous | 1049 (25%) | 20 | 156 (119) | ||
| Devonian | 451 (11%) | 11 | <10 (<10) | ||
| Silurian | 72 (2%) | 10 | 50 (50) |
U.S. Geological Survey Open-File Report 99-50-C