发明名称 |
Methods and apparatus for a downhole tool |
摘要 |
An apparatus and method for operating a packer and a fracture valve is shown. The packer may include a tubular mandrel having a longitudinal bore with an annular packing element and a first piston disposed around the mandrel, wherein the first piston is operable to set the packing element, and a second piston operable to isolate fluid communication between the first piston and the mandrel bore. The fracture valve may include a tubular mandrel having a longitudinal bore and a port, a piston operable to close fluid communication between the bore and the port, and a latch disposed between the piston and the mandrel operable to resist movement of the piston.
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申请公布号 |
EP2351904(A1) |
申请公布日期 |
2011.08.03 |
申请号 |
EP20110163756 |
申请日期 |
2009.03.27 |
申请人 |
WEATHERFORD LAMB, INC. |
发明人 |
FAGLEY IV, WALTER;INGRAM, GARY;JOHNSON, CHRISTOPHER |
分类号 |
E21B23/06;E21B33/129;E21B33/1295 |
主分类号 |
E21B23/06 |
代理机构 |
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代理人 |
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地址 |
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