Treating Sleeping Sickness. The type of treatment depends on the stage of the disease. Drugs used in the first stage of the disease are of lower toxicity and are easier to administer. However, treatment success in the second stage of the disease depends on a drug that can cross the blood-brain barrier.
Definition of casinghead gas. : natural gas rich in hydrocarbon vapors that is taken without processing from an oil well.
Casing is the major structural component of a well. 1  Casing is needed to: 2  Maintain borehole stability. 3  Prevent contamination of water sands. 4  Isolate water from producing formations. 5  Control well pressures during drilling, production, and workover operations.