Method and apparatus for removing debris from a wellbore
Patent 5327974 Issued on July 12, 1994. Estimated Expiration Date: 
October 13, 2012. 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 13, 2012. 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 References 1080684 2336586 2371385 2371391 2500754 2513944 3141505 System and apparatus for orienting a well casing perforating gun Boosterless perforating gun and method of assembly Sand control system InventorsAssigneeApplicationNo. 959626 filed on 10/13/1992US Classes:166/311Cleaning or unloading wellExaminersPrimary: Bui, Thuy M.Attorney, Agent or FirmInternational ClassE21B 043/00AbstractThe invention comprises a tool with at least one extending member which causes the fluids moving in the wellbore after perforation to increase in velocity. The velocity is further increased by an auxiliary flowpath which permits the addition of fluid from the surface or from elsewhere in the wellbore or formation to be pumped to mix with the other fluids being produced after perforation. The auxiliary fluid further increases velocity, thus improving the ability of the mixture of formation and auxiliary fluid to entrain debris and remove it from the wellbore.Other References
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