Method of preventing precipitation of iron compounds during acid treatment of wells

United States of America Patent

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Nov 12, 1991
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N/A
app pub date
Jan 4, 1990
filing date
Jan 4, 1989

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Expired

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Abstract

The invention discloses a process for reducing sludging during acid treatment of an oil well by adding phosphinic acid or a soluble salt thereof and a source of cupric or cuprous ion. The addition of an iodide ion source to this combination aids its effectiveness in stronger acids.

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Patent Owner(s)

Patent Owner	Address
BJ SERVICES COMPANY	4601 WESTWAY PARK BLVD HOUSTON TX 77041

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E21B:EARTH OR ROCK DRILLING

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Delorey, John R	Calgary, CA	2	20
Pachla, Sylvia K	Calgary, CA	1	15
Taylor, Robert S	Calgary, CA	41	1129

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Method of preventing precipitation of iron compounds during acid treatment of wells

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07461119

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PATENT NO	5063997
SERIAL NO	07461119
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07461119

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