earthquakes are nowt to do with oil, or lack of it. Or coal, gas or any other natural resource.
Apologies if I oversimplify it, but I'm not a geologist...
the earth's crust is made up of lots of plates which move around over the hot bit, the mantle. What makes them move is the convection currents in the mantle. Some plates are moving apart, others are moving together, and some are sliding along parallel to each other.
Where the plates are moving apart, new crust comes up from the mantle in the form of lava. Best example is the mid-Atlantic ridge, where the North American plate and Eurasian plate are separating. The results here are mostly underwater, with the exception of Iceland and its many volcanoes.
The Hawaian islands are right in the middle of the Pacific plate, so you wouldn't expect any of this to affect them - except that there's a "hot spot" under the crust where magma bubbles up to the surface quite slowly (in comparison) to create "Shield volcanoes" like Kilaueia and Mauna Kea (sp!). This is how this particular island chain is being created
where the plates are moving together, one dives under the other - this is a subduction zone - occasionally "sticking". When they unstick, they do so very quickly, creating an earthquake. Further away from the subduction zone, the crust buckles up to form mountains. Sometimes in those mountains, the crust cracks right down to the mantle, allowing magma to seep to the surface to form a volcano like Mount St Helens, Vesuvius or Mt Etna.
Where the plates move parallel to each other, again they often stick, and when they unstick, you get an earthquake. I may be wrong but I think the San Andreas fault in California as an example of this
There are earthquakes & volcanoes happening all the time; it's just that these days with 24 hour multi-channel TV, we get to see more reports. No more or fewer than normal, they're just being reported more/better