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with petroleum diesel to create a biodiesel blend. It can be used in
compression-ignition (diesel) engines with little or no
modifications. Biodiesel is simple to use, biodegradable, nontoxic,
and essentially free of sulfur and aromatics [10].
Brazil and Sweden are two countries with full scale biofuel
programs.
Control questions
1. What types of wells do you know?
2. What is artificial lift? When is it necessary?
3. Describe artificial lift methods.
4. How many hundred liters of acid are pumped into the
well under pressure to increase permeability of the
formation?
5. What does it mean to “complete” a well?
6. What process called reservoir stimulation?
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