TAG Oil's operations are focused exclusively in New Zealand: the Taranaki and East Coast Basins of New Zealand's North Island, and the Canterbury Basin on the South Island.
Activities include oil and gas production in the Taranaki Basin, development of several discoveries, production infrastructure and high-impact exploration drilling across 2,953,810 acres of land prospective for discovery at several play levels.
In the East Coast Basin, TAG Oil is pursuing the extensive unconventional resource potential in tight oil formations that are widespread over the Company's acreage. These thermally mature source-rock formations have many similarities to North America's Bakken Shale source-rock formation in the successful Williston Basin.
On New Zealand’s South Island, TAG is in the early stages of exploring the Canterbury Basin, a lightly explored frontier which is geologically similar to the productive Taranaki Basin and believed to contain significant discovery potential.
| TAG's Oil & Gas Projects | ||||
| Permit | Basin | Interest | Acreage | Status |
| 38156 Cardiff Deep Gas Discovery | Taranaki | 100% | 7,487 | Development/ Appraisal |
| 38156 Cheal Discoveries | Taranaki | 100% | 7,487 | Production/ Exploration |
| 52181 Kaheru Offshore JV | Taranaki | 40% | 77,039 | Exploration |
| 38748 Sidewinder Discovery | Taranaki | 100% | 7,910 | Development/ Exploration |
| 54873 Heatseeker | Taranaki | 100% | 26,327 | Exploration |
| 54876 North Cheal | Taranaki | 50% | 3,914 | Exploration |
| 54877 East Cheal | Taranaki | 70% | 6,158 | Exploration |
| 54879 South Cheal | Taranaki | 50% | 1,102 | Exploration |
| 38348 Waitangi Hill Discovery | East Coast | 100% | 198,421 | Exploration |
| 38349 Boar Hill Frontier | East Coast | 100% | 634,048 | Exploration |
| 50940 Nick's Head | East Coast | 100% | 67,880 | Exploration |
| 53674 Wairarapa Frontier | East Coast | 100% | 595,524 | Exploration |
| 52676 Marlborough Frontier | East Coast | 100% | 246,512 | Exploration |
| 52589 Oamaru Onshore/ Offshore | Canterbury | 100% | 1,165,349 | Exploration |