Structure/Play Analysis (more...)
The Queen Charlotte Basin is thought to contain several types of
oil and gas bearing structures or "plays" resulting from a combination
of structural and stratigraphic features. By analyzing these features,
specific targets are chosen for exploratory drilling to determine whether
or not economically valuable quantities of oil and gas exist.
| Play |
- combination of geological features/structures that
is thought to have the potential to accumulate oil and gas
|
| Neogene Targets |
- Skokun formation
|
| |
- thought to contain 80% of the Queen Charlotte Basin's oil and gas,
and nine out of ten of the largest fields (Dietrich, 1995) |
| |
- contains large structural features underlain by source rocks |
| |
- made up of the Miocene Oil & Gas Play and the Pliocene Oil & Gas
Play |
| |
- the risks associated with these prospects are the timing of
the maturation of the source rocks (i.e., did they mature before
or after the seals developed), and the possible inadequacy of the
seals which are highly faulted (cracked), which could lead to the
leakage of hydrocarbons
|
| Other Targets |
- the Cretaceous Oil & Gas Play |
| |
- located in the area between Graham Island and the south-western
Queen Charlotte Sound |
| |
- contains smaller structures and single reservoir zones |
| |
- the main risks are, again, the timing of the maturation of the
source rocks, and also the possible absence of reservoir rocks (traps)
in some locations
|
Further Details
|
