Electropositive production well treating fluid and method of preparing the same
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United States of America Patent
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Jan 29, 2008
Grant Date -
Sep 16, 2004
app pub date -
Nov 21, 2003
filing date -
Nov 21, 2002
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Abstract
An electropositive and water-based production well treating fluid system exhibits electropositivity by using a cationic viscosifier meanwhile matched with a cationic fluid loss additive and, optionally, contains a mud-building agent, an electrical stabilizing agent, a colloid-stabilizing agent, lubricant, an oil layer protective agent and/or a weighting agent. The electropositive production well treating fluid can beffer solve the contradiction of technical requirements between 'treating fluid stability' and 'bore hole stability', and features a strong ability to inhibit the dispersion of clay, a good effect of protecting oil-gas reservoirs, fast drilling speeds, regular shape of bore holes and good resistance to salt.
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