As a non-renewable energy source, petroleum reserves in the ground are very limited. Under the current water flooding conditions, the oil recovery rate is only 35% to 45%, that is, most of the crude oil remains in the ground after the end of water flooding. How to extract the remaining crude Oilfield Chemicals in the ground to the maximum extent has become an important task for the petroleum industry. "Developing the west and stabilizing the east" is the development strategy of China's petroleum industry, and improving the recovery rate of underground crude oil in the late period of high water cut is an important part of the development strategy of China's petroleum industry to stabilize the east. Therefore, the development and application of EOR technology is of great practical significance for the implementation of the strategy of China's petroleum industry.
In the process of oil extraction, the ratio of oil-water flow rate is improved by injecting polyacrylamide solution to improve the crude oil content in the production. At present, there are few applications of
Drilling Auxiliaries polyacrylamide in oil fields abroad. Due to the special geological conditions, polymer flooding technology has been widely adopted in Daqing oilfield and Shengli Oilfield in China.
At present, most of China's oil fields have entered the late stage of secondary oil recovery, and the comprehensive oil recovery rate is only 30%, so the three times oil recovery through technical means has become one of the main measures to stabilize oil production. The oil production of Daqing Oilfield and Shengli Oilfield, the main force of tertiary oil recovery in China, has increased year by year, accounting for 25% and 12.4% of their crude oil production in 2009, respectively.
In oil mining, polyacrylamide is mainly used in drilling mud materials and improve oil recovery rate, etc., widely used in drilling, completion, cementing, fracturing, enhanced oil recovery and other oilfield mining operations, with viscosification, filtration loss reduction, rheological regulation, gelling, diversion, profile adjustment and other functions.
By injecting polyacrylamide solution, the ratio of oil-water flow rate was improved, and the crude oil content in the production was increased. At present, there are few applications of polyacrylamide in oil fields abroad. Due to the special geological conditions, polymer flooding technology has been widely adopted in Daqing oilfield and Shengli Oilfield in China.
At present, polyacrylamide flooding is the main technical means of tertiary oil recovery, and it will still be the main method of enhancing oil recovery in the future. With the increase of the demand for tertiary oil recovery, the market demand for polyacrylamide will be very strong, and the market prospect of PAM for oil recovery is broad.
Henan Hongze Environmental Protection Technology Co., Ltd
