Self Containing Enclosure for Protection from Killer Bees
A self contained protective enclosure with an opening for entry and egress and a screen for ventilation and viewing.
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AbstractA debris catching device for downhole milling features modular debris receptacles that are held in the housing in a manner that facilitates stacking and a generally undulating flow path to facilitate dropping of the debris into the receptacles as the remaining fluid travels up the tool for ultimate screening before the fluid exits the tool to flow up to the surface or in a reverse circulation pattern back to the mill below the debris catcher. The modules can also be aligned with flapper valves at the top of each module to prevent debris in the tool from falling to the mill if circulation is turned off. The mill is configured to have an off-center return path preferably as large as the passage through the mill body to aid circulation and cutting performance.Other References
| InventorsAssigneeApplicationNo. 12029228 filed on 02/11/2008US Classes:166/99WITH JUNK RETRIEVING MEANSField of Search166/99, WITH JUNK RETRIEVING MEANS166/162, RECEPTACLES166/316VALVES, CLOSURES OR CHANGEABLE RESTRICTORSExaminersPrimary: Gay, Jennifer HAssistant: Ro, Yong-Suk Attorney, Agent or FirmUS Patent References2169922, 2220989, 2556849, 2659441, 5327974, Method and apparatus for removing debris from a wellboreIssued on: 07/12/1994 Inventor: Donovan, et al.5944100, Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well Issued on: 08/31/1999 Inventor: Hipp6024168, Wellborne mills & methods Issued on: 02/15/2000 Inventor: Kuck, et al.6176311, Downhole cutting separator Issued on: 01/23/2001 Inventor: Ryan6189617, High volume sand trap and method Issued on: 02/20/2001 Inventor: Sorhus, et al.6250387, Apparatus for catching debris in a well-bore Issued on: 06/26/2001 Inventor: Carmichael, et al.6276452, Apparatus for removal of milling debris Issued on: 08/21/2001 Inventor: Davis, et al.6607031Screened boot basket/filter Issued on: 08/19/2003 Inventor: Lynde, et al. International ClassesE21B 31/08E21B 27/00 E21B 34/00 |