| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 01/08/2002 | US6336507 Deformed multiple well template and process of use |
| 01/08/2002 | US6336506 Apparatus and method for perforating and stimulating a subterranean formation |
| 01/08/2002 | US6336504 Downhole separation and injection of produced water in naturally flowing or gas-lifted hydrocarbon wells |
| 01/08/2002 | US6336503 Downhole separation of produced water in hydrocarbon wells, and simultaneous downhole injection of separated water and surface water |
| 01/08/2002 | US6336421 Floating spar for supporting production risers |
| 01/08/2002 | CA2238155C Coiled tubing supported electrical cable having indentations |
| 01/03/2002 | WO2002001102A1 Tubular threaded joint capable of being subjected to diametral expansion |
| 01/03/2002 | WO2002001044A1 Inclined separator for separating well fluids |
| 01/03/2002 | WO2002001043A1 Method and device for performing a portion of casing in a reservoir |
| 01/03/2002 | WO2002001042A1 Method of transferring fluids through a permeable well lining |
| 01/03/2002 | WO2001065062A3 Use of downhole high pressure gas in a gas-lift well |
| 01/03/2002 | WO2001040612A3 Apparatus for hanging tubulars in wells |
| 01/03/2002 | US20020002205 Viscoelastic fluid comprising: an aqueous medium; a zwitterionic surfactant; and a member selected from the organic acid salts, inorganic acid salts |
| 01/03/2002 | US20020000322 Flow completion system |
| 01/03/2002 | US20020000319 Apparatus and method to complete a multilateral junction |
| 01/03/2002 | US20020000317 Communicating with devices positioned outside a liner in a wellbore |
| 01/03/2002 | US20020000316 Method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system |
| 01/03/2002 | US20020000315 Flow completion apparatus |
| 01/02/2002 | EP1167686A2 Screen jacket assembly connection and methods of using same |
| 01/02/2002 | EP1165936A1 Novel fluids and techniques for maximizing fracture fluid clean-up |
| 01/02/2002 | EP1165933A1 Wellbore packer |
| 01/02/2002 | EP0990087A4 Calliope oil production system |
| 01/02/2002 | CN2469209Y Electric braking apparatus for oil pumping machine |
| 01/01/2002 | US6334486 Downhole flow control devices |
| 01/01/2002 | US6334485 Deviated borehole drilling assembly |
| 01/01/2002 | US6334351 Metal pipe expander |
| 12/27/2001 | WO2001098630A1 Chemical sensor for wellbore applications |
| 12/27/2001 | WO2001098624A1 Method and apparatus of protecting explosives |
| 12/27/2001 | WO2001098623A1 Radial expansion of tubular members |
| 12/27/2001 | WO2001044618A3 Gas lift assembly |
| 12/27/2001 | US20010054969 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 12/27/2001 | US20010054507 Tubing hanger system |
| 12/27/2001 | US20010054505 Downhole flow control devices |
| 12/27/2001 | US20010054504 Downhole flow control devices |
| 12/26/2001 | CN2467821Y Beam-pumping unit driven by linear motor |
| 12/26/2001 | CN2467794Y Raw oil electric dewatering micro-computer program control apparatus |
| 12/26/2001 | CN2467793Y Device for forming fracture with prop block |
| 12/26/2001 | CN2467792Y Ground transverse flow controller using for oil well water injection well |
| 12/26/2001 | CN2467791Y Steel cable lifting belt driving wheel for oil producing machine |
| 12/25/2001 | US6333700 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 12/25/2001 | US6332498 Deviated borehole drilling assembly |
| 12/25/2001 | CA2071357C Vapor-phase nutrient delivery system for in-situ bioremediation of soil |
| 12/20/2001 | WO2001096797A1 Method for producing, transporting, offloading, storing and distributing natural gas to a marketplace |
| 12/20/2001 | WO2001083940A8 Electrical well heating system and method |
| 12/20/2001 | US20010052303 Shaped charge for large diameter perforations |
| 12/19/2001 | EP1163495A1 Method for measuring the flow rates of the single phases in a multiphase fluid stream and relevant apparatus |
| 12/19/2001 | EP0857248B1 Completion assembly for wellbores |
| 12/19/2001 | CN2466385Y Fixed valve assembly of oil well pump |
| 12/19/2001 | CN2466384Y Super viscous crude electric heating rod type oil-well pump |
| 12/19/2001 | CN2466383Y Linear seal oil-well pump |
| 12/19/2001 | CN2466382Y Steel cable lifting belt driving device for oil production machine |
| 12/19/2001 | CN2466347Y High-velocity jet perforator |
| 12/19/2001 | CN2466346Y Rear horse-head antifatigue device for special shaped beam pumping unit |
| 12/18/2001 | US6330916 Formation treatment method using deformable particles |
| 12/18/2001 | US6330915 Protection of downwell pumps from sand entrained in pumped fluids |
| 12/18/2001 | US6330914 Method and apparatus for tracking hydraulic fractures in unconsolidated and weakly cemented soils and sediments |
| 12/18/2001 | US6330912 Pack-off bushing |
| 12/18/2001 | CA2187859C Process for making underground storage caverns |
| 12/18/2001 | CA2021276C Recovering a sulphur-containing reservoir fluid |
| 12/13/2001 | WO2001094790A1 Transmission for deep well pump |
| 12/13/2001 | WO2001094748A2 Fluid powered subterranean pump system |
| 12/13/2001 | WO2001094747A1 Deformable gravel pack |
| 12/13/2001 | WO2001040624A3 Production valve |
| 12/13/2001 | WO2001031298A3 Multiphase flow measurement system |
| 12/13/2001 | US20010050173 Submersible pumps |
| 12/13/2001 | US20010050172 Method and apparatus for stimulation of multiple formation intervals |
| 12/13/2001 | US20010050169 Methods and apparatus for completing wells in unconsolidated subterranean zones |
| 12/13/2001 | US20010050168 Pump drive head with stuffing box |
| 12/12/2001 | EP1161616A1 A method for increasing recovery of hydrocarbons |
| 12/12/2001 | CN2464963Y Single crank energy-saving oil pump |
| 12/12/2001 | CN2464937Y Perforating gun without gun body |
| 12/12/2001 | CN2464936Y High-energy composite perforating fracturing device for oil gas well |
| 12/12/2001 | CN2464935Y Stainless steel board net sand-proof pipe |
| 12/12/2001 | CN2464934Y Filter for underground extracting liquid |
| 12/12/2001 | CN1326043A Ground-type multi-cable pumping unit |
| 12/12/2001 | CN1076070C Circulation-type microbial oil displacing production method |
| 12/11/2001 | US6328113 Isolation of subterranean zones |
| 12/11/2001 | US6328111 Live well deployment of electrical submersible pump |
| 12/11/2001 | US6328107 Method for installing a well casing into a subsea well being drilled with a dual density drilling system |
| 12/11/2001 | US6328104 Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking |
| 12/11/2001 | US6328102 Method and apparatus for piezoelectric transport |
| 12/11/2001 | CA2237835C Polished rod clamp |
| 12/09/2001 | CA2710783A1 Pump drive head with stuffing box |
| 12/09/2001 | CA2311036A1 Pump drive head with leak-free stuffing box, centrifugal brake and polish rod locking clamp |
| 12/08/2001 | CA2349798A1 A perforating charge carrier and method of assembly for same |
| 12/06/2001 | WO2001092727A1 Operation mode of an oilwell pumping unit for well development and device for performing said operation mode |
| 12/06/2001 | WO2001092687A2 Expandable elements |
| 12/06/2001 | WO2001092684A1 Well production apparatus and method |
| 12/06/2001 | WO2001092683A1 Subsea flowline jumper handling apparatus |
| 12/06/2001 | WO2001092681A1 Method and system for reducing longitudinal fluid flow around a permeable well tubular |
| 12/06/2001 | WO2001092680A1 Use of helically wound tubular structure in the downhole environment |
| 12/06/2001 | WO2001092675A2 Method and system for performing operations and for improving production in wells |
| 12/06/2001 | WO2001092673A2 Fluid displacement apparatus and method |
| 12/06/2001 | WO2001069038A8 Methods for improving oil production |
| 12/06/2001 | US20010049342 Method for production of hydrocarbons from organic-rich rock |
| 12/06/2001 | US20010047872 In-tubing wellbore sidetracking operations |
| 12/06/2001 | US20010047871 Use of helically wound tubular structure in the downhole environment |
| 12/06/2001 | US20010047870 Apparatus for forming wellbore casing |
| 12/06/2001 | US20010047869 Method and apparatus for drilling an offshore underwater well |
| 12/06/2001 | US20010047867 Circulation tool for use in gravel packing of wellbores |