发明名称 |
WELL TREATMENT |
摘要 |
Particles containing scale inhibitor may be made by contacting porous ceramic beads with a solution of scale inhibitor, and then drying the beads. If the dried beads are then contacted with a solution containing a high concentration of polyvalent cations, for example 2.5 M calcium ions, and then dried again, then the rate of release of scale inhibitor when the beads are subsequently contacted with water is reduced. Varying the concentration of the polyvalent cation in the range 0.1 to 5.0 M varies the rate at which the inhibitor is subsequently released. The beads may be used as fracture proppants or in a gravel pack so as to suppress scale formation in an oil or gas well.
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申请公布号 |
WO9936668(A1) |
申请公布日期 |
1999.07.22 |
申请号 |
WO1998GB03863 |
申请日期 |
1998.12.21 |
申请人 |
AEA TECHNOLOGY PLC;WEBB, PHILIP, JOHN, CHARLES |
发明人 |
WEBB, PHILIP, JOHN, CHARLES |
分类号 |
C09K8/92;E21B43/267;(IPC1-7):E21B43/25 |
主分类号 |
C09K8/92 |
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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