| Patents for E21B 27 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits (1,068) |
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| 02/27/2014 | WO2013101695A3 Apparatus and method for storing core samples at high pressure |
| 02/26/2014 | CN203452653U Open-type drilling bucket and rotary drilling rig |
| 02/19/2014 | CN103590749A Drilling bucket and rotary drilling rig |
| 02/13/2014 | US20140041873 Method and Apparatus for Local Supply of a Treatment Fluid to a Well Portion |
| 02/12/2014 | EP2696027A1 Drilling bucket and method for drilling a bore hole |
| 02/12/2014 | CN103573202A Sand bailing mechanism and drilling tool |
| 02/05/2014 | CN203420659U Simple stone removal device for abrasion drill |
| 01/16/2014 | US20140014358 Downhole apparatus and method |
| 01/16/2014 | US20140014343 Systems and Methods for Managing Milling Debris |
| 01/16/2014 | US20140014320 Debris Chamber with Helical Flow Path for Enhanced Subterranean Debris Removal |
| 01/15/2014 | CN203394401U Drilling bucket and rotary drilling rig |
| 12/25/2013 | CN103470189A Body-open type drilling bucket and rotary drilling rig |
| 12/18/2013 | CN103452551A Rock powder extraction device |
| 12/05/2013 | WO2013180574A1 Tracer device for downhole fluid processing |
| 12/04/2013 | EP2669464A1 A clean-out tool for cleaning out a well bore and a method for cleaning out a well bore using such a clean-out tool |
| 12/04/2013 | CN203321394U Single-bottom adjustable valve bottom-cleaning drill |
| 11/28/2013 | US20130312951 Drill-Site Proppant Vacuum System |
| 11/27/2013 | CN203308435U Fast workover pipe column |
| 11/27/2013 | CN203308414U Sand removal pipe column of oil-water well |
| 11/19/2013 | US8584744 Debris chamber with helical flow path for enhanced subterranean debris removal |
| 11/13/2013 | CN203284122U Integrated type four-shaft chain transmission direct current boring winch |
| 11/06/2013 | CN103382827A Drilling bucket and rotary drilling rig |
| 10/30/2013 | EP2655789A2 Downhole apparatus and method |
| 10/29/2013 | US8567491 Device and method of lining a wellbore |
| 10/10/2013 | WO2012135466A3 Methods for supplying a chemical within a subterranean formation |
| 10/02/2013 | CN103334710A Single-bottom adjustable valve bottom cleaning drill |
| 09/24/2013 | CA2608292C Device and method for retrieving debris from a well |
| 09/18/2013 | EP2638237A2 Modular tool for wellbore cleaning |
| 09/18/2013 | CN203201508U Gigantic split drilling junk basket |
| 09/18/2013 | CN203201507U Upper cover plate valve type drilling and grinding sand bailing cone assembly of sand bailing pump |
| 09/18/2013 | CN203201506U Efficient rotational flow sand setting device |
| 09/04/2013 | EP2633152A1 Method for using tracer flowback for estimating influx volumes of fluids from different influx zones |
| 08/19/2013 | WO2013105865A1 Method and device for removal of a hydrate plug |
| 08/19/2013 | CA2861318A1 Method and device for removal of a hydrate plug |
| 08/15/2013 | US20130206391 Apparatus and System for a Vortex Three Port Container |
| 08/15/2013 | US20130206390 Downhole Tool Piston Assembly |
| 08/07/2013 | CN203114221U Soil falling-stopping device used for rotary excavating pile hole |
| 08/06/2013 | CA2655646C Well cleanup tool with real time condition feedback to the surface |
| 07/31/2013 | EP2619400A2 Magnetically controlled delivery of subterranean fluid additives for use in subterranean applications |
| 07/31/2013 | CN203097780U Reverse-umbrella-shaped accumulated soil falling stopping device for rotary excavating pile hole |
| 07/31/2013 | CN203097779U Air bag accumulated soil falling stopping device for rotary excavating pile hole |
| 07/31/2013 | CN203097778U Oil-well sand washing and bailing integrated pipe column |
| 07/31/2013 | CN203096736U Rotary drilling pile shell structure |
| 07/25/2013 | US20130186621 Dirty fluid valve with chevron seal |
| 07/24/2013 | CN203081370U Sand setting cylinder |
| 07/16/2013 | CA2582941C An injection apparatus for injecting an activated fluid into a well-bore and related injection method |
| 07/11/2013 | US20130175036 Methods and Apparatus for Downhole Extraction and Analysis of Heavy Oil |
| 07/10/2013 | CN203050585U Connector for coiled tubing drilling cutting gathering device |
| 07/10/2013 | CN203050584U Piston-type sand bailer for oil well |
| 07/04/2013 | WO2013101695A2 Apparatus and method for storing core samples at high pressure |
| 07/03/2013 | CN203035139U Vibrating downward moving type sand digging pump |
| 07/03/2013 | CN103184843A Oil pipe conveying type bailing process |
| 06/20/2013 | US20130153245 Multi-purpose well servicing apparatus |
| 06/19/2013 | CN103161417A Suction type device for cleaning muck at bottom of pile foundation hole |
| 06/11/2013 | US8459362 System, device, and method of installation of a pump below a formation isolation valve |
| 06/06/2013 | WO2013079572A1 A cleaning tool and a method for treating an inner surface of a casing |
| 06/06/2013 | US20130140030 Apparatus and method for dispensing chemicals into a well |
| 06/06/2013 | CA2856162A1 A cleaning tool and a method for treating an inner surface of a casing |
| 06/06/2013 | CA2847831A1 Improved wireline drilling system |
| 06/05/2013 | EP2599953A1 An Improved Wellbore Cleaning Apparatus and Method |
| 06/05/2013 | CN202970568U Drilling bucket and rotary drilling rig adopting same |
| 05/30/2013 | US20130133885 Formation Fluid Sampling |
| 05/29/2013 | CN202954784U Slag prevention check valve for water injection well |
| 05/28/2013 | CA2553236C Downhole drilling of a lateral hole |
| 05/23/2013 | WO2013073948A1 Equalized hydrostatic bailer |
| 05/23/2013 | CA2852510A1 Equalized hydrostatic bailer |
| 05/22/2013 | CN202946072U Tail pipe sand setting device under oil pumping plunger pump |
| 05/22/2013 | CN103114584A Pile shell structure of rotary excavating pile |
| 05/22/2013 | CN103114577A Rotary excavating hole-forming construction method for building pile foundation |
| 05/15/2013 | CN202937211U Shaft drill bit of sandy gravel stratum radial well |
| 05/15/2013 | CN103104210A Piping shaft mud-removing device |
| 05/15/2013 | CN103104209A Device for preventing falling of accumulated soil for rotatablely excavated pile hole |
| 05/14/2013 | CA2585061C Method and apparatus for well treatment |
| 05/10/2013 | WO2012038699A3 Magnetically controlled delivery of subterranean fluid additives for use in subterranean applications |
| 05/01/2013 | CN202914007U Submerged sand collector of electric pump |
| 04/18/2013 | US20130092367 Methanol storage and delivery apparatus for gas wells |
| 04/17/2013 | CN103046864A Pile type integral soil taking device of base pillar |
| 04/16/2013 | US8418757 Corrosion management systems for vertically oriented structures |
| 04/10/2013 | CN202866708U Bailing drilling bucket device for rotary drilling rig |
| 04/03/2013 | CN202850912U Pocket cylinder device for oil field well testing |
| 04/03/2013 | CN202850900U Downhole tool integrating operations of detection, washing and fishing of oil well |
| 04/03/2013 | CN103015933A Sand washing and sand salving integrated tubular column and method for oil well |
| 04/02/2013 | CA2473017C Well chemical treatment utilizing plunger lift deliver system |
| 03/28/2013 | US20130075093 System and method for fluid processing with variable delivery for downhole fluid analysis |
| 03/28/2013 | US20130075078 Downhole sampling tool |
| 03/27/2013 | CN202832332U Sand salvage pump |
| 03/27/2013 | CN202832331U Clamping prevention type bailing bucket |
| 03/27/2013 | CN202832330U Sand mechanism and drilling tool |
| 03/20/2013 | EP2570584A1 Oil leak collector device and oil storage device |
| 03/14/2013 | WO2012178041A3 Fluid migration shut-off |
| 03/14/2013 | CA2780446A1 Suspension extraction device |
| 03/07/2013 | WO2012149345A9 Drilling waste treatment |
| 03/07/2013 | WO2012148578A4 Centrifugal subterranean debris collector |
| 03/06/2013 | EP2564013A2 Drilling or extraction pipe string |
| 02/27/2013 | CN202755935U Multifunctional slag removal cylinder |
| 02/27/2013 | CN202755934U Pumping dropped-object-resistant sand-setting tool |
| 02/27/2013 | CN102943643A Drill bit for shaft of radial well on sandy gravel stratum |
| 02/20/2013 | CN202745779U Combined coal powder sand-settling pipe |
| 02/14/2013 | US20130037259 Acoustic generator and associated methods and well systems |
| 02/13/2013 | CN202731797U Push rod type bailing device |