E21B 33 - Sealing or packing boreholes or wells

Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
12/2006
12/20/2006	CN2849140Y Blowout preventer of well head
12/20/2006	CN2849139Y Solar energy automatic gas extraction well head device
12/20/2006	CN2849138Y Polished rod sealing device
12/20/2006	CN2849137Y Antitheft device of oil field well head
12/20/2006	CN2849136Y Antitheft well head cap capable of discharging oil gas and its special spanner
12/20/2006	CN2849135Y Polished rod sealing device of multifunction oil pumping machine
12/20/2006	CN1291132C Multifunctional oil extraction well mouth
12/20/2006	CN1290915C Hydrogenized nitrile butadiene rubber and para aromatic polyamide fibre composite material and its preparing method
12/19/2006	US7150327 Workover unit and method of utilizing same
12/19/2006	US7150322 cement composition including water, hydraulic cement, and a defoamer for cementing in a subterranean formation
12/19/2006	US7150321 Zeolite-containing settable spotting fluids
12/19/2006	US7150319 Method for reducing or completely eliminating water influx in an underground formation, and crosslinkable copolymers for implementing said method
12/19/2006	CA2490846C Eccentric wellhead hyrdraulic drive unit
12/19/2006	CA2319179C Universal well cement additives and methods
12/14/2006	WO2006133351A2 Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation
12/14/2006	WO2006132627A1 Rod lock for ram blowout preventers
12/14/2006	WO2006131339A1 Dth-hammer drilling device and overburden drilling method
12/14/2006	US20060278406 Rod lock for ram blowout preventers
12/14/2006	US20060278397 Top tensioned riser adaptor
12/14/2006	US20060278391 Hydrogel for use in downhole seal applications
12/14/2006	US20060278390 Crosslinkable polymer compositions and associated methods
12/14/2006	CA2654785A1 Dth-hammer drilling device and overburden drilling method
12/14/2006	CA2611238A1 Rod lock for ram blowout preventers
12/13/2006	EP1731708A1 Sledgehammer drilling apparatus and method
12/13/2006	EP1730383A1 Spear type blow out preventer
12/13/2006	EP1386055B1 Quick release blowout preventer bonnet
12/13/2006	CN2846732Y Non-casting ball type blocking pressure signle flow device
12/13/2006	CN2846730Y 液压式水泥伞 Hydraulic cement umbrella
12/13/2006	CN2846729Y Controllable injecting cement circulation device
12/13/2006	CN2846728Y Double position type Faner well cementing tool
12/13/2006	CN2846727Y Small diameter hole thermosensitive metal expansion packer
12/13/2006	CN2846726Y Lateral well driling packer device
12/13/2006	CN2846725Y Recovery type high temperature high pressure packer
12/13/2006	CN2846724Y High temperature high pressure recovery type back well flushing packer
12/13/2006	CN2846723Y Pressure difference type packer for small diameter hole oil-and-gas, water well
12/13/2006	CN2846722Y Track type small diameter oil pipe blanking plug
12/13/2006	CN2846721Y Novel multifunction workover anti-blowout device
12/13/2006	CN2846720Y Multiple function workover well anti-blowout device
12/13/2006	CN2846719Y Accentric ball automatic regulating device for deviation and direction
12/13/2006	CN2846718Y High temperature high pressure double pipe pole wellhead device
12/12/2006	US7148812 System for use in controlling a hydrocarbon production well
12/12/2006	US7147068 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
12/12/2006	US7147067 Zeolite-containing drilling fluids
12/12/2006	US7147059 Use of downhole high pressure gas in a gas-lift well and associated methods
12/12/2006	US7147056 Subterranean fluids and methods of using these fluids in subterranean formations
12/12/2006	US7147055 mixtures of alumina, silica and soluble inorganic phosphates and setting retarders comprising water soluble carboxylic acids, having compressive strength, for use in well completion
12/12/2006	US7147053 Wellhead
12/12/2006	US7146697 Seal removal tool
12/12/2006	CA2449660C Compression set, large expansion packing element
12/12/2006	CA2446165C Quick release blowout preventer bonnet
12/12/2006	CA2398715C Sequential hydraulic control system for use in subterranean well
12/12/2006	CA2356144C Method and apparatus for expanding an isolation tubing
12/12/2006	CA2307630C An apparatus for retaining two strings of tubulars
12/07/2006	US20060272860 Methods of improving well bore pressure containment integrity
12/07/2006	US20060272828 Retrievable downhole tool and running tool
12/07/2006	US20060272823 Well operations system
12/07/2006	US20060272822 Well operations system
12/07/2006	US20060272820 Cement compositions comprising environmentally compatible defoaming agents and methods of use
12/07/2006	US20060272819 Methods of preparing settable fluids comprising particle-size distribution-adjusting agents, and associated methods
12/07/2006	US20060272818 One trip cemented expandable monobore liner system and method
12/07/2006	US20060272817 One trip cemented expandable monobore liner system and method
12/07/2006	US20060272809 Wellbores utilizing fiber optic-based sensors and operating devices
12/07/2006	US20060272806 Swelling packer with overlapping petals
12/07/2006	US20060272552 For sealing a subterranean zone penetrated by a wellbore
12/06/2006	EP1727963A2 Compositions and methods for the delivery of chemical components in subterranean well bores
12/06/2006	EP1259709B1 Controllable production well packer
12/06/2006	CN2844422Y Bearing two-stage injection cement tool for fixing horizontal-well sieve tube
12/06/2006	CN2844421Y Special block packer for horizontal well
12/06/2006	CN2844420Y Injecting packer
12/06/2006	CN2844419Y Small-diameter and pressure-expandable sandproofing packer against cracking
12/06/2006	CN2844418Y Steel umbrella-type sealer
12/06/2006	CN2844417Y Automatically-balanced pressure-differential construction valve of double-pipe external packer
12/06/2006	CN2844416Y Adjusting flexible block
12/06/2006	CN2844415Y Electrically-controlled and balance-off sealer under well
12/06/2006	CN2844414Y Safety device of packing box
12/06/2006	CN2844413Y Double-pipe well sealer
12/06/2006	CN2844412Y Well-head device of pumping well
12/06/2006	CN2844411Y Improved well-head optical-lever sealer of pumping unit
12/06/2006	CN2844410Y Universal-joint offset well-head device against blowout
12/06/2006	CN2844409Y Two-purpose thermal oil-extracting sealer at well head with injection and pumping functions
12/06/2006	CN2844223Y High-pressure rock strata aqueous grouting sealer
12/06/2006	CA2549484A1 Well cap method and apparatus
12/05/2006	US7145471 Sequential hydraulic control system for use in a subterranean well
12/05/2006	US7143832 Well packing
12/05/2006	US7143831 Apparatus for releasing a ball into a wellbore
12/05/2006	US7143830 Apparatus and method for installation of subsea well completion systems
12/05/2006	US7143828 Emulsion admixtures for improving cement elasticity
12/05/2006	CA2239021C Tubing injection system for oilfield operations
12/03/2006	CA2509182A1 Self-aligning stuffing box
12/01/2006	CA2547254A1 Downhole flapper circulation tool
11/2006
11/30/2006	WO2006127895A2 Expandable bridge plug and setting assembly
11/30/2006	WO2006126925A1 Sealing device
11/30/2006	US20060266530 System and method for fluid control in expandable tubing
11/30/2006	US20060266529 Expandable bridge plug and setting assembly
11/30/2006	US20060266527 Apparatus for radially expanding and plastically deforming a tubular member
11/30/2006	US20060266523 Subsea insulating shroud
11/30/2006	US20060266519 Methods of improving well bore pressure containment integrity
11/30/2006	US20060266515 Using pipe shrinkage upon expansion to actuate a downhole tool
11/30/2006	US20060266512 Pump plug
11/30/2006	US20060266107 Methods of improving well bore pressure containment integrity

1 ... 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 ... 336