WELLBORE SAND CONTROL METHOD

A slug of solution, comprising a linear polymer (e.g. polysulfone) dissolved in a "good" solvent (e.g. morpholine) is emplaced in the near-wellbore region of an unconsolidated sand reservoir. A second slug comprising a poor solvent for the polymer (e.g. water) is pumped into the region to...

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Bibliographische Detailangaben
Hauptverfasser:	PERKINS, ERNEST H, JONASSON, RALPH G, RISPLER, KEVIN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A slug of solution, comprising a linear polymer (e.g. polysulfone) dissolved in a "good" solvent (e.g. morpholine) is emplaced in the near-wellbore region of an unconsolidated sand reservoir. A second slug comprising a poor solvent for the polymer (e.g. water) is pumped into the region to contact the first slug. The linear polymer is precipitated and forms a three-dimensional network of interconnected strands extending through the fluid flow channels between the sand grains. The network functions to consolidate the sand.