Integrated profile control technology of nitrogen foams during recovery of viscous oil reservoirs

• Main Authors: YU TIANTIAN, LIU YAN, HE WENYUAN, LIN JISHENG, HE XU, LIU TINGFENG, LIANG WEI, WANG CHAO, CAO QIUFANG, ZHAO XIAO
• Format: Patent
• Language: Chinese; English
• Published: 15.06.2016
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses integrated profile control technology of nitrogen foams during recovery of viscous oil reservoirs. The integrated profile control technology comprises a fixed station, a nitrogen foam generator, a nitrogen foam repetition generator, a nitrogen foam dispenser and nitrogen foam metering devices, all of which are sequentially connected.The fixed station comprises a nitrogen trolley group, a steam boiler and a foaming agent injection and skidding unit. The nitrogen trolley group, the steam boiler and the foaming agent injection and skidding unit are connected with the nitrogen foam generator. At least one nitrogen foam metering device is connected with corresponding shaft mouths. The integrated profile control technology of nitrogen foams during recovery of viscous oil reservoirs has following beneficial effects: the integrated profile control fails due to complex operation of steam-driven nitrogen foam profile control technology; the integrated profile control technology helps achieve lin