Slickline setting tool and bailer bottom for plugback operations
Patent 5392856 Issued on February 28, 1995. Estimated Expiration Date: 
October 8, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 8, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 134254 filed on 10/08/1993US Classes:166/285, Cementing, plugging or consolidating166/66.4, Electrical motor (e.g., solenoid actuator)166/169Lateral ports used in wellExaminersPrimary: Dang, Hoang C.Attorney, Agent or FirmInternational ClassE21B 033/132AbstractA setting tool and a bailer bottom tool are provided for forming a wellbore plugback operation of the type used in hydrocarbon recovery operations. Each of the setting tool and the bailer bottom tool include a battery pack for powering an actuating device to actuate the respective tool downhole, thereby avoiding the risks and costs associated with mechanical jarring devices, explosive charges, and devices activated by transmitting signals to the downhole tool through an electrically conductive cable. Each tool may be biased by a spring to a release position, and the actuating device may release compressed fluid from the tool to the wellbore, thereby allowing movement of a piston member and corresponding movement of a mechanical release device for moving the tool to a release position. A trigger mechanism electronically in series between the battery power source and the actuating device may be a programmable timer or a motion sensitive timer.Other References
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