发明名称 |
WELL PERFORATING METHOD FOR SOLUTION WELL MINING |
摘要 |
<p>An improved method of solution well mining is provided which, among other advantages, enhances the injectivity of the wells and eliminates the need for underreaming and the use of well screens. In solution well mining, a leaching solution is pumped into an injection well so as to flow through a mineralize zone to a plurality of production wells, the solution which contains the mineral to be recovered being pumped out of the production wells. The invention provides for using a high pressure water jet to perforate the cemented casings of the well so as to, inter alia, enhance injectivity and provide sand control. The perforations are arranged in a preselected nonuniform pattern in the production well, with the density being the greatest at the bottom of the zone, so as to promote uniform flow of the solution.</p> |
申请公布号 |
CA1082099(A) |
申请公布日期 |
1980.07.22 |
申请号 |
CA19780306079 |
申请日期 |
1978.06.23 |
申请人 |
UNITED STATES OF AMERICA, REPRESENTED BY THE SECRETARY, UNITED STA |
发明人 |
SAVANICK, GEORGE A.;KRAWZA, WALTER G. |
分类号 |
E21B43/114;E21B43/28;(IPC1-7):21B29/00 |
主分类号 |
E21B43/114 |
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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