Page 41 - Drilling Technology in Nontechnical Language

32 Drilling Technology in Nontechnical Language Second Edition

3. Reservoirs may be formed from permeable sandstones or
permeable or fractured carbonates. The oil and gas is found in the
pore spaces, fractures, and voids within the reservoir rock.

4. Reservoirs can be extremely complex, requiring detailed
structural knowledge and computer simulations to work out how
best to exploit them for the maximum return on investment.
5. When planning and drilling wells, close cooperation between
the drillers and the reservoir engineers is necessary in order to
minimize damage to the reservoir.
6. If H S is present in the reservoir, special precautions are needed
2
to avoid danger to the crews, and the well has to use special,
expensive steels to avoid catastrophic sudden failure.

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