Q.1.
Oil wetting a normally water-wet formation can reduce the permeability by an average of 40%.
Q.2.
Corrosion inhibitors and surfactants are generally cationic surfactants.
Q.3.
Which of the following is incorrect in the context of surfactant used in the oil and gas industry?
Q.4.
Emulsion – blocking and water – blocking is usually not a problem in _____ reservoirs except during acidizing.
Q.5.
Which of the following is incorrect in the context of cationic surfactant used in the oil and gas industry?