Experimental study on shearing and salt tolerant deep profile control agents composed of inorganic aluminum gel
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TE341

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    Abstract:

    Aiming at the problem of poor shear performance and salt tolerance of organogel, the deep anti-shearing and salt tolerant profile control agent is composed using anhydrous aluminum chloride and urea. The gelling behavior of the deep profile control agents is studied in this paper. The effects of concentration, temperature, and salinity on the gelling law are investigated. The application performances of the profile control agents, including the injectivity, plugging ability, and flushing resistance are evaluated. The results show that both the concentration and the temperature have great influence on the gelation time, and the gelation time can be adjusted from 16 to 824 h by adjusting the concentration of anhydrous aluminum chloride and urea. The inorganic salts including Na+,Mg2+,and Ca2+ have little effect on the gelation time. The salt tolerance, anti-shearing injectivity, plugging ability and flushing resistance of the gel system are very good, and the temperature limit is high as 80 ℃.

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Wang Ping, Dai Caili, You Qing. Experimental study on shearing and salt tolerant deep profile control agents composed of inorganic aluminum gel[J]. Petroleum Geology and Recovery Efficiency,2013,20(6):100~103

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  • Online: September 02,2015
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