Several "three" in Oilfield Production"

"Three off and three recovery" in Oilfield Production"

"Three off" and "Three recovery" in Oilfield Production: "Three off" refers to crude oil dehydration, Crude Oil Natural Gas Removal and Natural Gas Removal in the process of oil and gas collection and transmission; "Three recovery" refers to sewage recovery, natural gas recovery, and light oil recovery.

What is Tertiary Recovery and its methods?

Oil exploitation using oil layer energy is usually called a secondary oil recovery; injecting water and gas into the oil layer, and supplementing energy for the oil layer; chemical substances are used to improve the performance between oil, gas, water and rocks, and more oil is mined, called tertiary oil. It is also called the EOR method. There are many ways to improve oil recovery, mainly including surfactant injection, polymer thickening water injection, alkali water injection, CO2 injection, alkali injection and polymer flooding, and inert gas flooding; hydrocarbon flooding, fire-burning oil layer, steam flooding, etc. The improvement of recovery by microbial methods can also be attributed to the tertiary production, which is also called the secondary production.