Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate
2011-07-19
2011-07-19
Stephenson, Daniel P (Department: 3676)
Wells
Processes
Operating valve, closure, or changeable restrictor in a well
C166S320000, C166S319000, C166S374000, C166S386000, C166S382000
Reexamination Certificate
active
07980315
ABSTRACT:
A selectively communicatable hydraulic nipple is provided which includes an upper and lower communications component adapted to communicate with tools landed inside the hydraulic nipple. Each communications component communicates with a control line used by the hydraulic nipple. An operator is allowed to selectively communicate with tools landed inside the nipple via the upper and lower communications components via the nipple control line. As a result, should the TRSCSSV control line loose integrity, the operator has the option of utilizing the nipple control line to continue oil and gas production without the need for well modifications. Alternatively, an operator could land a chemical injection tool, with an injection string suspended therefrom, in the nipple and inject chemicals into the well via the nipple control line.
REFERENCES:
patent: 4294315 (1981-10-01), Yonker et al.
patent: WO 2006133351 (2006-12-01), None
patent: WO 2007073401 (2007-06-01), None
Office Action issued in related foreign patent application CA 2,657,546.
Bolding Jeffrey L.
Turner Dewayne
Baker Hughes Incorporated
Ro Yong-Suk
Stephenson Daniel P
Zarian Midgley & Johnson PLLC
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