Question

With regards to oil drilling and recovery, enhanced recovery processes are differentiated from other recovery techniques by which of the following?

The use of enhanced drill bits and pumps to increase oil yield.

The use of an artificial pressure source, such as pressurized water, to increase oil yield.

The use of a secondary well to increase yield.

The use of chemicals and heat, as well as pulsating pressure sources, to increase oil yield.

Answer 1

Ans : the use of chemicals and heat , as well as pulsating pressure sources, to increase yield.

In the advanced recovery techniques , as much as 40- 60% of the oil can be recovered.

The advanced or the tertiary recovery techniques uses various methods to accomplish its goal such as : gas injections , thermal techniques , heats and chemicals , steam injection etc.

The addition of heat and certain chemicals may reduce the viscosity of the oil ,and hence lead to easier recovery of oil.