发明名称 |
Packer assembly having sequentially operated hydrostatic pistons for interventionless setting |
摘要 |
A packer for use in a wellbore includes a packer mandrel. First and second pistons are slidably disposed about the packer mandrel defining first and second chambers therewith. An activation assembly initially prevents movement of the first piston. A release assembly initially prevents movement of the second piston. First and second seal assemblies are disposed about the packer mandrel such that actuation of the activation assembly allows a force generated by a pressure difference between the wellbore and the first chamber to shift the first piston in a first direction toward the first seal assembly to radially expand the first seal assembly and to actuate the release assembly and, actuation of the release assembly allows a force generated by a pressure difference between the wellbore and the second chamber to shift the second piston in the first direction toward the second seal assembly to radially expand the second seal assembly. |
申请公布号 |
AU2012384533(A1) |
申请公布日期 |
2015.01.22 |
申请号 |
AU20120384533 |
申请日期 |
2012.07.02 |
申请人 |
YOUST, LAWRENCE |
发明人 |
EZELL, MICHAEL DALE;MALLORY, BEAUFORD SEAN |
分类号 |
E21B33/1295;E21B33/043;E21B33/12 |
主分类号 |
E21B33/1295 |
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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