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XANTHAN CONCENTRATE, PROCESS OF PREPARING THEREOF AND USE THEREOF BY INCREASED RECOVERY OF OIL FROM SUBTERRANEAN FORMATIONS
XANTHAN CONCENTRATE, PROCESS OF PREPARING THEREOF AND USE THEREOF BY INCREASED RECOVERY OF OIL FROM SUBTERRANEAN FORMATIONS
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机译:Xanthan精矿,通过从地下岩层中回收石油来提高回收率的方法及其制备和使用
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摘要
A xanthan concentrate obtained by the removal of a precipitant in a vapor saturated atmosphere from a pre-concentrate obtained by precipitation of an aqueous xanthan fermentate with a water miscible solvent as precipitant does not produce aggregates by dilution with water or sea water. This, or the pre-concentrate - optionally supplemented with biocide - is thus useful subsequent to dilution as viscosifier for enhanced oil recovery in oil wells. The preparation of the xanthan concentrate is disclosed.
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