发明名称 |
Delayed borate crosslinked fracturing fluid having increased temperature range |
摘要 |
The crosslinking of galactomannan gum fracturing fluids by borate ion is delayed for high-temperature applications by encapsulating the boron with a polymer coating. The crosslink-delay time is further adjusted by varying the concentration of an organic polyol. The polyol also acts as a stabilizer for the crosslinked fluid at elevated temperatures. Low pumping friction pressures are achieved by the delay in the crosslinking with the boron available at high temperatures to add high temperature stability to the fracturing fluid at temperatures ranging up to about 350 DEG F.
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申请公布号 |
US5445223(A) |
申请公布日期 |
1995.08.29 |
申请号 |
US19940213640 |
申请日期 |
1994.03.15 |
申请人 |
DOWELL, A DIVISION OF SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
NELSON, ERIK B.;CAWIEZEL, KAY E.;CONSTIEN, VERNON G. |
分类号 |
C09K8/68;(IPC1-7):E21B43/267 |
主分类号 |
C09K8/68 |
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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