The Oil Drilling Process Explained

All Important Production Phase

The most important phase of drilling "at least from the prospective of the drillers" is the production phase. This is the period during which oil or gas is actually pulled from the ground.

For most wells, the pressure inside the reservoir is enough to push the oil or gas to the surface. In more depleted areas, however, some other means -- like a pumpjack -- is necessary.

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