发明名称 |
A SEALING PACKER FOR DO DOWNHOLE PLACEMENT WITHIN A WELL CASING |
摘要 |
<p>A packer for a down hole oil well includes an inner mandrel assembly having an upper outer sleeve assembly that includes the hold down mechanism and upper packer seals with a piston on the underside of the packing seals to be pressure responsive and to deform the seals in response to pressure within the well string. Furthermore, a lower outer sleeve assembly has packing elements that are deformed and a setting mechanism to allow the packer to be set in a position within the well casing. Upper and lower unloading valves allow for fluid the bypass the packers when the packer is retrieved upward through the well casing.</p> |
申请公布号 |
IN166166(B) |
申请公布日期 |
1990.03.24 |
申请号 |
IN1986DE86819 |
申请日期 |
1986.10.01 |
申请人 |
ARROW OIL TOOLS INC |
发明人 |
CLIFTON RED GEORGE;BROOKEY ROBERT LYTLE |
分类号 |
E21B;E21B33/124;F16J15/02;F16J15/18;(IPC1-7):F16J15/02 |
主分类号 |
E21B |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|