WINTERSHALL HOLDING GMBH;INSTITUTE OF PETROLEUM CHEMISTRY OF THE SIBERIAN BRANCH OF THE RUSSIAN ACADEMY OF SCIENCES
发明人:
STEHLE Vladimir,ALTUNINA Liubov,KUVSHINOV Vladimir
申请号：
EA20150090150
公开号：
EA026648(B1)
申请日:
2013.07.01
申请国别(地区):
欧亚专利组织
年份:
2017
代理人:
摘要：
The present invention relates to a method for the tertiary recovery of petroleum from underground petroleum deposits having a deposit temperature T, into which at least one injection well and at least one production well are sunk, comprising at least the following method steps: i) injecting a flooding agent into the petroleum deposit through at least one injection well, wherein a formulation (F) having a temperature Tthat is higher than the temperature Tis used as the flooding agent, ii) cooling the flooding agent from step i) in the petroleum deposit, and iii) injecting a further flooding agent into the petroleum deposit through at least one injection well and withdrawing petroleum through at least one production well, wherein the formulation (F) contains raw glycerin (R) having the following composition: 80 to 90 wt.% glycerin, 10 to 20 wt.% water, 0 to 10 wt.% inorganic salts, and 0 to 1 wt.% organic compounds, wherein the wt.% specifications are in relation to the total weight of the raw glycerin (R).
