发明名称 |
Method for reducing radioactivity of oilfield tubular goods contaminated with radioactive scale |
摘要 |
Alkaline earth metal scales, especially barium sulfate scale deposits are removed from oilfield pipe and other tubular goods with a scale-removing composition comprising an aqueous alkaline solution having a pH of about 8 to about 14, a polyaminopolycarboxylic acid, preferably EDTA or DTPA and a catalyst or synergist comprising oxalate anion. When the scale-removing solution is contacted with a surface containing a scale deposit, substantially more scale is dissolved at a faster rate than previously possible.
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申请公布号 |
US5111887(A) |
申请公布日期 |
1992.05.12 |
申请号 |
US19900614470 |
申请日期 |
1990.11.16 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
MORRIS, RICHARD L.;PAUL, JAMES M. |
分类号 |
B09C1/02;C02F5/08;C02F5/10;C02F5/12;C09K8/528;E21B43/28;G21F9/00 |
主分类号 |
B09C1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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