Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
11/2012
11/20/2012US8312925 Bottom hole assembly for wellbore operations
11/20/2012US8312922 Metal-to-metal seal with travel seal bands
11/20/2012US8312921 Method and apparatus for selective treatment of a perforated casing
11/20/2012CA2700136C System and method for providing additional blowout preventer control redundancy
11/20/2012CA2675823C Hydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments
11/17/2012CA2740740A1 Cement head
11/17/2012CA2740567A1 Downhole pump apparatus having decoupleable isolation plug
11/15/2012WO2012154932A1 Method and system for fracking and completing wells
11/15/2012WO2012154281A1 Wellhead ball launch and detection system and method
11/15/2012WO2012154058A1 Mandrel arrangement and method of operating same
11/15/2012WO2012125326A4 A method to shut down a high pressure oil/gas well that is leaking under blowout conditions
11/15/2012US20120285704 Deep-Water Oil Well Spill Controller and Container
11/15/2012US20120285699 Subsea cap
11/15/2012US20120285698 Dual Density Mud Return System
11/15/2012US20120285692 Methods of zonal isolation and treatment diversion
11/15/2012US20120285683 Reducing or stopping the uncontrolled flow of fluid such as oil from a well
11/15/2012US20120285682 Settable Compositions Containing Metakaolin Having Reduced Portland Cement Content
11/15/2012US20120285677 Annular fluid containment device
11/15/2012US20120285676 Pressure energized interference fit seal
11/15/2012CA2835128A1 Method and system for fracking anc completing wells
11/14/2012EP2522997A1 Monitoring hydrocarbon fluid flow
11/14/2012EP2522807A1 Subsea wellhead assembly
11/14/2012EP2522806A2 Pressure energized interference fit seal
11/14/2012EP2521840A1 Process and apparatus to improve reliability of pinpoint stimulation operations
11/14/2012EP2521837A1 Device for carrying a replacement safety valve in a well tube
11/14/2012EP2521836A1 Alignment of bop stack
11/14/2012CN202531153U Coal bed gas well choosing device
11/14/2012CN202531149U Three-pipe thermal recovery well head device shell
11/14/2012CN202531143U Digital type underground separated layer water injection measurement and adjustment technological tubular column
11/14/2012CN202531140U Double-sealed hot water flooding tubular column of directional well in oil field
11/14/2012CN202531133U Water plugging technological tubular column for sealing middle layer and exploiting two ends of oil well
11/14/2012CN202531104U Drilling tool float valve with long service life
11/14/2012CN202531098U Broken coal-rock mass grouting system
11/14/2012CN202531097U Slip packer for gas well fracture
11/14/2012CN202531096U Wall-hook packer for horizontal well fracturing
11/14/2012CN202531095U Water injection packer with stepwise unpacking function
11/14/2012CN202531094U Compression type packer
11/14/2012CN202531093U Expansion type packer
11/14/2012CN202531092U Hole packer
11/14/2012CN202531091U Tubing plug
11/14/2012CN202531090U Well-flushing packer for oil jacket separate injection of casing water injection well
11/14/2012CN202531089U Simple blowout preventer of pumping well
11/14/2012CN202531088U Rotary up-moving efficient replacement packing box
11/14/2012CN202531087U Sealing device for pumping wellhead
11/14/2012CN202531086U Lubricating type oil sucking machine well mouth polish rod sealing packing case
11/14/2012CN202531085U Polish rod sealing device capable of changing padding in continuously pumping manner
11/14/2012CN202531084U Decentralized wellhead lubricating device
11/14/2012CN202531083U Adjustable blowout prevention box of belt conveyor
11/14/2012CN202531082U Eccentric test wellhead device with annual circulation groove
11/14/2012CN202531081U Device for sucking and dispelling toxic and harmful wellhead gases
11/14/2012CN202531080U Wellhead sealing hanger
11/14/2012CN202531079U Sucker rod ring-seal motive seal device
11/14/2012CN202531078U Drilling waterproof device
11/14/2012CN202531070U Blowout preventer transfer device
11/14/2012CN202531068U Slave tube hanger of dual-tube well
11/14/2012CN202531049U Packing mounting centralizer for pumping unit wellhead
11/14/2012CN202531028U Safety bracket special for replacing packing at pumping wellhead
11/14/2012CN1977027B Process for disruption of filter cakes
11/14/2012CN102782249A Flow control device and flow control method
11/14/2012CN102777169A Gas pressure depression angle measuring method and system
11/14/2012CN102777168A Monitoring hydrocarbon fluid flow
11/14/2012CN102777155A Shale gas bridge plug subsection completion method
11/14/2012CN102777148A Double-function releasing bridge plug for horizontal well
11/14/2012CN102777147A Pressure energized interference fit seal
11/14/2012CN102777131A Quick-connection clamping hoop of well cementation cement head
11/14/2012CN102777129A High-strength sucker rod
11/14/2012CN102777123A High-expansibility naked eye suspension adhering system and method
11/14/2012CN101668924B Downhole wet connect using piezoelectric contacts
11/14/2012CN101603414B Method for reinforcing wall of drill hole by jet grouting
11/14/2012CN101586462B Method of suspending, completing and working over a well
11/14/2012CN101535593B An underwater apparatus for operating underwater equipment
11/14/2012CN101523011B Reinforcement of irregular pressure vessels
11/14/2012CN101349146B Deep water hurricane-proof valve
11/14/2012CN101171399B Packer-anchoring device
11/13/2012US8307916 Controlling fluid loss in oil and gas wells
11/13/2012US8307899 Methods of plugging and abandoning a well using compositions comprising cement kiln dust and pumicite
11/13/2012US8307898 Method and apparatus for cementing a liner in a borehole using a tubular member having an obstruction
11/13/2012US8307892 Configurable inserts for downhole plugs
11/13/2012US8307891 Retractable downhole backup assembly for circumferential seal support
11/13/2012US8307530 Geothermal drilling device and method
11/13/2012CA2747138C Apparatus and method for severing a wellbore tubular
11/13/2012CA2740457A1 Hydraulic set packer system and fracturing methods
11/13/2012CA2648024C Wellbore method and apparatus for sand and inflow control during well operations
11/11/2012CA2776601A1 Methods of zonal isolation and treatment diversion
11/08/2012WO2012151303A2 Liner cementation process and system
11/08/2012WO2012151265A2 Locking assembly for mechanically set packer
11/08/2012WO2012151146A2 Single upset landing string running system
11/08/2012WO2012109397A3 Completion assembly
11/08/2012WO2012106623A3 Method of corrosion mitigation using nanoparticle additives
11/08/2012WO2012097257A3 Electrically engaged, hydraulically set downhole devices
11/08/2012WO2012091984A3 Dissolvable barrier for downhole use and method thereof
11/08/2012WO2012069822A3 Valve apparatus and improved ram
11/08/2012WO2012045771A3 Well pump installation
11/08/2012US20120279727 Enhancing delaying in situ gelation of water shutoff systems
11/08/2012US20120279722 Tubular seating system and method of seating a plug
11/08/2012US20120279720 Subsea Pressure Delivery System
11/08/2012US20120279707 Thermally-Activated, High-Temperature Cement Suspending Agent
11/08/2012US20120279706 Method and device for closing a well
11/08/2012US20120279705 Liner cementation process and system
11/08/2012US20120279700 Configurable downhole tools and methods for using same
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