| 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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| 03/30/2004 | US6712135 In situ thermal processing of a coal formation in reducing environment |
| 03/30/2004 | CA2315783C A method to increase the oil production from an oil reservoir |
| 03/30/2004 | CA2250364C Process for treating water-containing natural gas wells & natural gas storage wells |
| 03/30/2004 | CA2230691C An improved electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores |
| 03/25/2004 | WO2004025077A1 Three-dimensional well system for accessing subterranean zones |
| 03/25/2004 | WO2004025075A1 Methods and compositions for sealing an expandable tubular in a wellbore |
| 03/25/2004 | WO2004025073A1 Method for removing gravel pack screens |
| 03/25/2004 | WO2004025072A1 Method and system for controlling pressure in a dual well system |
| 03/25/2004 | WO2004025069A2 System and method of drilling and completion |
| 03/25/2004 | WO2004024309A2 System and method for the mitigation of paraffin wax deposition from crude oil by using ultrasonic waves |
| 03/25/2004 | WO2004018835A3 System and method for subterranean access |
| 03/25/2004 | US20040055787 Method and system for circulating fluid in a well system |
| 03/25/2004 | US20040055786 Positive displacement apparatus for selectively translating expander tool downhole |
| 03/25/2004 | US20040055760 Method and apparatus for forming an annular barrier in a wellbore |
| 03/25/2004 | US20040055759 Apparatus and method to expand casing |
| 03/25/2004 | US20040055758 Annular isolators for expandable tubulars in wellbores |
| 03/25/2004 | US20040055756 Collapse resistance of tubing |
| 03/25/2004 | US20040055754 Expansion method |
| 03/25/2004 | US20040055752 Surface controlled subsurface lateral branch safety valve |
| 03/25/2004 | US20040055751 Alternate path multilateral production/injection |
| 03/25/2004 | US20040055750 Multilateral injection/production/storage completion system |
| 03/25/2004 | US20040055749 Remote intervention logic valving method and apparatus |
| 03/25/2004 | US20040055747 Acid coated sand for gravel pack and filter cake clean-up |
| 03/25/2004 | US20040055743 Reciprocating pump dump valve |
| 03/25/2004 | US20040055489 Printing rolls having wear indicators and methods for determining wear of printing and anilox rolls and sleeves |
| 03/24/2004 | EP1400818A2 Fracture monitoring using pressure-frequency analysis |
| 03/24/2004 | EP1400357A1 Printing rolls having wear indicators and methods for determining wear of printing and anilox rolls and sleeves |
| 03/24/2004 | EP1399644A1 Method for preparing wellbore casing for installation |
| 03/24/2004 | EP1399641A1 Pipe centralizer and method of attachment |
| 03/24/2004 | EP1169271B1 Method of aquifer remediation |
| 03/24/2004 | CN2607445Y Fan blade type gas anchor |
| 03/24/2004 | CN2607444Y Combined booster |
| 03/24/2004 | CN2607443Y Combined sand retention pipe |
| 03/24/2004 | CN2607442Y Multifunctional beam-pumping unit protector |
| 03/24/2004 | CN1483920A Agent for acidizing sandstone oil reservoir |
| 03/24/2004 | CN1483919A Mixed gas injection thermal recovery technology |
| 03/24/2004 | CN1483918A Vertical pipe oil pumping machine |
| 03/23/2004 | US6710720 Pressure impulse telemetry apparatus and method |
| 03/23/2004 | US6708769 Apparatus and methods for forming a lateral wellbore |
| 03/23/2004 | US6708767 Downhole tubing |
| 03/23/2004 | US6708764 Undulating well bore |
| 03/23/2004 | US6708763 Method and apparatus for injecting steam into a geological formation |
| 03/23/2004 | US6708759 Liquid addition to steam for enhancing recovery of cyclic steam stimulation or LASER-CSS |
| 03/23/2004 | US6708758 In situ thermal processing of a coal formation leaving one or more selected unprocessed areas |
| 03/23/2004 | CA2093544C Flexible line installing device with bend limiting device |
| 03/20/2004 | CA2440247A1 Fracture monitoring using pressure-frequency analysis |
| 03/18/2004 | WO2004023053A2 Downhole separator and method |
| 03/18/2004 | WO2004023014A2 Threaded connection for expandable tubulars |
| 03/18/2004 | WO2004022914A1 Method of treating subterranean formations with porous ceramic particulate materials |
| 03/18/2004 | WO2004022913A1 Combined casing expansion / casing while drilling method and apparatus |
| 03/18/2004 | WO2004022912A1 Well screen |
| 03/18/2004 | WO2004022911A2 Wellbore device for selective transfer of fluid |
| 03/18/2004 | WO2004022198A1 Device for separating multi-phase fluids |
| 03/18/2004 | WO2003102365B1 System for radially expanding a tubular member |
| 03/18/2004 | US20040050554 Accelerated production of gas from a subterranean zone |
| 03/18/2004 | US20040050552 Three-dimensional well system for accessing subterranean zones |
| 03/18/2004 | US20040050551 Fracturing different levels within a completion interval of a well |
| 03/18/2004 | US20040050549 Thermodynamic pulse lift oil & gas recovery system |
| 03/18/2004 | US20040050547 Downhole upgrading of oils |
| 03/18/2004 | US20040050217 Erosion resistant, self and/or artificial external cleaning solid exclusion system |
| 03/18/2004 | CA2713734A1 Method of treating subterranean formations with porous ceramic particulate materials |
| 03/17/2004 | WO2004027199A2 Accelerated production of gas from a subterranean zone |
| 03/17/2004 | EP1398460A1 Subterranean formation treatment with solids |
| 03/17/2004 | EP1398458A1 Reducing particulate flow-back in wells |
| 03/17/2004 | EP1398457A2 Method and apparatus for remote control of multilateral wells |
| 03/17/2004 | EP1397578A1 Expandable sand screen for use in a wellbore |
| 03/17/2004 | CN2606813Y Composite cylinder piston assembly for mud pump |
| 03/17/2004 | CN2606797Y Polymer driving concentric bridge type integrated distribution and injection device |
| 03/17/2004 | CN2606796Y Repeatly adjustable water blockoff device for oil production well |
| 03/17/2004 | CN2606795Y Stainless steel plate net type high permeability sand filter tube |
| 03/17/2004 | CN2606794Y Centralizing type anti-sand and anti-slag tube |
| 03/17/2004 | CN2606793Y Suspending frame for petroleum production device |
| 03/17/2004 | CN2606792Y Double tank unpowered continuous chemical adding device |
| 03/17/2004 | CN2606791Y 压缩式注水封隔器 Compression injection packer |
| 03/17/2004 | CN2606790Y Small diameter washable well packer |
| 03/17/2004 | CN1142362C Hydraulic oil soot exhauster with frequency-varying displacement-type speed control |
| 03/16/2004 | US6705425 Regenerative combustion device |
| 03/16/2004 | US6705404 Open well plunger-actuated gas lift valve and method of use |
| 03/16/2004 | US6705403 Production system and method for producing fluids from a well |
| 03/16/2004 | US6705402 Gas separating intake for progressing cavity pumps |
| 03/16/2004 | US6705399 Method for transforming a gas-liquid stream in wells and device therefor |
| 03/16/2004 | US6705398 Fracture closure pressure determination |
| 03/16/2004 | US6705397 Liquid level detection for artificial lift system control |
| 03/16/2004 | US6705395 Wellbore casing |
| 03/16/2004 | CA2323029C Process for enhancing hydrocarbon mobility using a steam additive |
| 03/16/2004 | CA2271459C Method for accelerating production |
| 03/16/2004 | CA2221152C Downhole flow control devices |
| 03/16/2004 | CA2212923C Method for sealing the junctions in multilateral wells |
| 03/11/2004 | WO2004020895A2 Method of manufacturing an insulated pipeline |
| 03/11/2004 | WO2004020787A1 Run in cover for downhole expandable screen |
| 03/11/2004 | WO2004020776A2 Well treatment apparatus and method |
| 03/11/2004 | WO2004003328A3 Method and system for controlling devices in hydrocarbon production |
| 03/11/2004 | US20040046143 Device for an opening in an outer sleeve of a sleeve valve and a method for the assembly of a sleeve valve |
| 03/11/2004 | US20040045741 Borehole stabilization while drilling |
| 03/11/2004 | US20040045720 Tubing expansion tool |
| 03/11/2004 | US20040045718 Liner hanger with sliding sleeve valve |
| 03/11/2004 | US20040045715 Method for removing gravel pack screens |
| 03/11/2004 | US20040045709 Downhole zone isolation system |
| 03/11/2004 | US20040045708 Downhole separator and method |
| 03/11/2004 | US20040045705 Downhole sensing with fiber in the formation |