Stability of PAM/PEI emulsified gels under HTHS conditions for water shut-off treatment
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چکیده
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Performance of Sulfonated Polyacrylamide/Chromium Triacetate Hydrogels for Water Shut-off Treatment
A hydrogel was prepared by crosslinking aqueous solutions of sulfonated polyacrylamide/chromium triacetate for use in water shut off operations. Gel swelling and the effects of salinity, injection time and flow rate on residual resistance factor (Frr) were investigated. In the presence of electrolytes, gel swelling decreased by about 80%. Results showed that oil permeability increased as inject...
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چکیده ندارد.
15 صفحه اولStability of Rounded Off Inverses Under Iteration
Let / be a monotone and strictly convex (or concave) function on a real interval and let g be the inverse function. Let I(x) = x. For a real valued function and N a positive integer let (t>pf(x) denote the rounding of (x) to N significant figures. Let h = gff » fa, the composition of f^ and g^¡. It is shown that h » ft » Iff = h o h » h « Ifj, and that equality can fail for fewer iterati...
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ژورنال
عنوان ژورنال: Journal of Petroleum Exploration and Production Technology
سال: 2018
ISSN: 2190-0558,2190-0566
DOI: 10.1007/s13202-018-0597-2