发明名称 |
Acidizing method for gravel packing wells |
摘要 |
A method for gravel packing perforations in a wellbore where an acid is directed into the perforations so as to dissolve formation fines in channels contained in said perforations. The acid is of a strength sufficient to dissolve said fines. After the fines are dissolved, a three slug sand consolidating agent is introduced into the perforations before the channels can be filled with formation fines. The consolidating agent remains in the perforations for a time sufficient to form a silicate cement in situ which cement has permeability retentive characteristics. The cement forms pores of a size sufficient to exclude formation fines from the wellbore. Thereafter, the wellbore is packed with gravel to remove any escaping fines from hydrocarbonaceous fluids produced to the surface.
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申请公布号 |
US5219026(A) |
申请公布日期 |
1993.06.15 |
申请号 |
US19910810665 |
申请日期 |
1991.12.19 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
SHU, PAUL;DONLON, WILLIAM P.;STROM, E. THOMAS;JONES, LLOYD G. |
分类号 |
E21B43/02;E21B43/04 |
主分类号 |
E21B43/02 |
代理机构 |
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代理人 |
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