English to Russian Tech/Engineering Petroleum Eng/Sci Нефтегазодобыча, патенты, общая терминология

Контекст:
"Whether a fluid is a desired or an undesired fluid depends on the purpose of the production or injection operation being conducted. For example, if it is desired to produce oil from a well, but not to produce water or gas, then oil is a desired fluid and water and gas are undesired fluids. If it is desired to produce gas from a well, but not to produce water or oil, the gas is a desired fluid, and water and oil are undesired fluids. If it is desired to inject steam into a formation, but not to inject water, then steam is a desired fluid and water is an undesired fluid."

У меня в голове роится много версий, различной степени тяжести:
- desired fluid — желательный, целевой, полезный, желательный для отбора флюид;
- undesired — нежелательный, нецелевой, паразитный, нежелательный для отбора флюид.

Имеется ли установившийся перевод для "desired/undesired fluid"?