E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells

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)
10/2001
10/23/2001	US6305468 Downhole screen and method of manufacture
10/23/2001	US6305402 Variable orifice gas lift valve for high flow rates with detachable power source and method of using
10/23/2001	US6305289 Shaped charge for large diameter perforations
10/18/2001	WO2001077485A1 Downhole flow meter
10/18/2001	WO2001031167A8 Flow control apparatus for use in a subterranean well
10/18/2001	US20010031174 Device for connecting a submerged fluid-transporting line
10/18/2001	US20010030049 Well isolation system
10/18/2001	US20010030046 Method of retarding sand build up in heavy oil wells
10/18/2001	DE19631520C2 Verfahren und Anlage zur soltechnischen Gewinnung von Evaporiten und Aufbereitung von Salzlösungen Process and apparatus for the solution mining of evaporites and preparation of salt solutions
10/17/2001	EP1144802A2 Profile formation
10/17/2001	EP0833769B1 A rotating connector with integrated lng course
10/17/2001	EP0699270B1 Downhole gas-liquid separator for wells
10/17/2001	CN2454566Y Spiral-flow sand-carrying pump
10/17/2001	CN2454539Y Apparatus for measuring casing-pressure of water well
10/17/2001	CN2454538Y Adjustable water-tap of water-injection well
10/17/2001	CN2454537Y High-pressure automatic injecting apparatus for solid profile-control agent
10/17/2001	CN2454536Y Well-tube water-filtering part of water-collecting deep well
10/16/2001	US6302216 Flow control and isolation in a wellbore
10/16/2001	US6302214 Apparatus and method for inflating packers in a drilling well
10/16/2001	US6302213 Method for installing a water well pump
10/16/2001	US6302207 Methods of completing unconsolidated subterranean producing zones
10/16/2001	US6302206 Treatment for shut-in gas well
10/16/2001	US6302204 Method of obtaining improved geophysical information about earth formations
10/16/2001	US6302203 Apparatus and method for communicating with devices positioned outside a liner in a wellbore
10/11/2001	WO2001075403A1 Method and apparatus for flow measurement
10/11/2001	WO2001075267A1 Method for extracting oil
10/11/2001	WO2001075264A1 Pressure boost pump
10/11/2001	WO2001074473A1 Method and apparatus for processing fluids produced from an offshore wellbore
10/11/2001	US20010027866 Deviated borehole drilling assembly
10/11/2001	US20010027864 System for indicating the firing of a perforating gun
10/10/2001	EP1141520A1 Method for removing condensables from a natural gas stream
10/10/2001	EP1141519A1 Method for removing condensables from a natural gas stream, at a wellhead, downstream of the wellhead choke
10/10/2001	EP1141518A1 Downhole sealing for production tubing
10/10/2001	EP1141517A1 Drilling method
10/10/2001	EP1141515A1 Method and apparatus for expanding a liner patch
10/10/2001	EP1140696A1 Method for preparing a h 2?-rich gas and a co 2?-rich gas at high pressure
10/10/2001	EP1140363A1 A nozzle for supersonic gas flow and an inertia separator
10/10/2001	CN2453165Y Oil prodn. machine with hydraulic transmission screw stem pump
10/10/2001	CN2453156Y Multi-functional oil pumping controller
10/10/2001	CN2453155Y Multi-functional oil pumping controller
10/10/2001	CN2453154Y Program-controlled oil-pumping installation
10/10/2001	CN2453135Y Oil well perforating gun tail sounding device
10/10/2001	CN2453134Y Means for storage and supply of fracture proppant
10/10/2001	CN2453133Y Oil pipe conveying perforating negative pressure means
10/10/2001	CN2453132Y Oil pipe conveying, multi-stage perforating negative pressure means
10/10/2001	CN2453131Y Oil well perforating gun decompression device
10/10/2001	CN2453130Y Sand-proof and filling tool for oil well
10/10/2001	CN2453125Y Water injection packer
10/10/2001	CN2453109Y Wing like well pipe
10/10/2001	CN1316593A Electromagnetic pumping unit
10/09/2001	US6300286 Clay-free well and service fluid of water brine
10/09/2001	US6299672 System for separating gas from liquid in production well fluid comprising: separation unit including storage tank; first separation stage to separate gas from liquid; second separation stage; electric submersible pumping system
10/09/2001	US6299256 Method and apparatus for recovering a gas from a gas hydrate located on the ocean floor
10/09/2001	US6298925 Method and apparatus for installing a small-scale groundwater sampling well
10/09/2001	US6298924 Safety method and apparatus for a perforating gun
10/09/2001	US6298921 Modular system for deploying subterranean well-related equipment
10/09/2001	US6298920 Method and apparatus for removing a rigid liner from within a cylindrical cavity
10/09/2001	US6298918 System for lifting petroleum by pneumatic pumping
10/09/2001	US6298917 Coiled tubing system for combination with a submergible pump
10/09/2001	US6298916 Method and apparatus for controlling fluid flow in conduits
10/09/2001	US6298915 Orienting system for modular guns
10/09/2001	US6298914 Wire-wrapped well screen
10/09/2001	US6298671 Method for producing, transporting, offloading, storing and distributing natural gas to a marketplace
10/09/2001	US6298664 Process for generating power including a combustion process
10/09/2001	CA2218278C Apparatus and method for lateral wellbore completion
10/04/2001	WO2001073423A1 Apparatus and method for downhole well equipment and process management, identification, and actuation
10/04/2001	WO2001073325A2 Gate valve
10/04/2001	WO2001073264A1 Monitoring fluid flow through a filter
10/04/2001	WO2001073263A1 Method for improving well quality
10/04/2001	WO2001073262A2 Sand removal and device retrieval tool
10/04/2001	WO2001073261A2 Riser with retrievable internal services
10/04/2001	WO2001073260A2 Multiport gate valve assembly
10/04/2001	WO2001073259A1 Tubing hanger with annulus bore
10/04/2001	WO2001073258A1 Gate valve with flow-through gate
10/04/2001	WO2001073257A1 Tubing head seal assembly
10/04/2001	WO2001073256A1 Tubing hanger system with gate valve
10/04/2001	WO2001073255A1 Internal gate valve for flow completion systems
10/04/2001	WO2001073254A2 Coupling means for controls bridge through a tubing head
10/04/2001	WO2001072464A1 Method of joining metal oilfield tubulars and well provided therewith
10/04/2001	WO2000040338A8 A nozzle for supersonic gas flow and an inertia separator
10/04/2001	US20010025710 Method and apparatus for connecting a main well bore and a lateral branch
10/04/2001	US20010025658 Multiport gate valve assembly
10/04/2001	CA2404881A1 Riser with retrievable internal services
10/04/2001	CA2404664A1 Method for improving well quality
10/03/2001	CN2451761Y Filter for oil-well pump
10/03/2001	CN2451759Y Apparatus for preventing dropper & sands from entering into fixed valve for pipe type oil-well pump
10/03/2001	CN2451758Y Plunger hanging load type oil-well pump
10/03/2001	CN2451757Y Sandproof oil-well pump
10/03/2001	CN2451756Y Double-purpose oil-well pump
10/03/2001	CN2451733Y Pump after-adding sand apparatus
10/03/2001	CN1315613A Method and device for controlling high-pressure water injecting pump station
10/03/2001	CN1072353C Apparatus for breaking hard material
10/02/2001	US6296690 Compression-pumping system comprising an alternating compression section and its process
10/02/2001	US6296060 Methods and systems for producing off-shore deep-water wells
10/02/2001	US6296056 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production
10/02/2001	US6296052 Compressor lift system for gas well produced liquids
10/02/2001	US6295867 Geological sample sub
09/2001
09/27/2001	WO2001071158A1 Subsea production system
09/27/2001	WO2001071155A1 Communicating with devices positioned outside a liner in a wellbore
09/27/2001	WO2001020126A3 System for enhancing fluid flow in a well

1 ... 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 ... 642