| 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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| 09/01/2004 | EP1169548B1 Method for annular sealing |
| 09/01/2004 | CN2637785Y Oil submersible electric pump machine set special centering guide |
| 09/01/2004 | CN2637780Y Booster water filling pump high pressure shaft end sealing device |
| 09/01/2004 | CN2637770Y Sand delivery device on screw pump oil extracting well pump |
| 09/01/2004 | CN2637768Y Moving drum type sand trap oil pump |
| 09/01/2004 | CN2637767Y Oil-well pump |
| 09/01/2004 | CN2637728Y Thick oil hot pump well high temperature multi parameter testing instrument |
| 09/01/2004 | CN2637727Y Internal cage type air trap device |
| 09/01/2004 | CN2637726Y Antifreeze oil well natural gas recovery device |
| 09/01/2004 | CN2637725Y Thick oil steam filling pipeline connecting device |
| 09/01/2004 | CN2637724Y Multi filtering net sand proof filtering screen pipe |
| 09/01/2004 | CN2637723Y New type water filling well composite filter |
| 09/01/2004 | CN2637722Y Shake out well anti-sand block oil pump tubular column |
| 09/01/2004 | CN2637721Y Oil pump machine froot head sheave position changing operating mechanism |
| 09/01/2004 | CN2637720Y Ultralarge suspension point load long stroke oil pump machine |
| 09/01/2004 | CN2637719Y Built in switch magnetic resistant motor driven drum oil pump machine |
| 09/01/2004 | CN2637718Y Cluster well 'T' shaped upper set type mutual acting self balance mechanical electrical integrated intelligent oil pump machine |
| 09/01/2004 | CN2637703Y Oil pumping sand extraction integrated process tubular column |
| 09/01/2004 | CN2637420Y Built in switch magnetic resistance electric rotary drum |
| 09/01/2004 | CN1526049A Expandable wellbore stabiliser |
| 09/01/2004 | CN1525041A Automatic adjustment method for injection allocation quantity of oil field water injection well |
| 09/01/2004 | CN1525040A Fabrication method and device for blanking plug |
| 09/01/2004 | CN1525039A Non walking beam linear motor pumping unit |
| 09/01/2004 | CN1524922A Acidification blocking remover of sandstone thin difference oil layer compound acid |
| 09/01/2004 | CN1524921A Foaming agent and acidic cross-linking foam breakdown fluid |
| 09/01/2004 | CN1164344C Breaking of oil/water emulsion |
| 08/31/2004 | US6782953 Tie back and method for use with expandable tubulars |
| 08/31/2004 | US6782952 Hydraulic stepping valve actuated sliding sleeve |
| 08/31/2004 | US6782948 Remotely operated multi-zone packing system |
| 08/31/2004 | US6782947 In situ thermal processing of a relatively impermeable formation to increase permeability of the formation |
| 08/31/2004 | US6782946 Method and apparatus for injecting one or more fluids into a borehole |
| 08/31/2004 | CA2325098C Shock and vibration protection for tools containing explosive components |
| 08/31/2004 | CA2321127C Method and apparatus for enhancing oil recovery |
| 08/31/2004 | CA2314289C Novel techniques for hydraulic fracturing combining oriented perforating and low viscosity fluids |
| 08/31/2004 | CA2287625C Method of patching downhole casing |
| 08/31/2004 | CA2195731C Flow segregator for multi-drain well completion |
| 08/31/2004 | CA2114456C Thermal recovery process for recovering oil from underground formations |
| 08/26/2004 | WO2004072440A1 Shock absorber for oil well pumping unit |
| 08/26/2004 | WO2004072436A1 Shoe for expandable liner system |
| 08/26/2004 | WO2004072434A2 Methods and apparatus for wellbore construction and completion |
| 08/26/2004 | WO2004072432A2 Adjustable well screen assembly |
| 08/26/2004 | WO2004053434A3 System for radially expanding tubular members |
| 08/26/2004 | WO2003042487B1 Mono diameter wellbore casing |
| 08/26/2004 | WO2003016669B1 Apparatus for radially expanding tubular members including a segmented expansion cone |
| 08/26/2004 | US20040167248 Methods of sealing expandable pipe in well bores and sealing compositions |
| 08/26/2004 | US20040163823 Tubing expansion |
| 08/26/2004 | US20040163819 Expandable sand screen and methods for use |
| 08/26/2004 | US20040163815 Method for using a reciprocating pump vent-dump valve |
| 08/26/2004 | US20040163811 Fracturing tool having tubing isolation system and method |
| 08/26/2004 | US20040163810 Downhole tool with ratcheting swivel and method |
| 08/26/2004 | US20040163808 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 08/26/2004 | US20040163807 Instrumented packer |
| 08/26/2004 | US20040163804 Screen assembly with flow through connectors |
| 08/26/2004 | US20040163803 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 08/26/2004 | CA2760504A1 Methods and apparatus for wellbore construction and completion |
| 08/25/2004 | EP1449763A1 Method and installation of subsea effluent pollution recovery from a sunken tanker by using multiple shuttle tanks |
| 08/25/2004 | EP1449762A1 Method and installation of effluent recovery at sea by using a shuttle reservoir |
| 08/25/2004 | EP1448923A1 Subsea connection apparatus |
| 08/25/2004 | EP1448872A1 System and method for separating fluids |
| 08/25/2004 | EP1448871A1 Multiphase fluid conveyance system |
| 08/25/2004 | EP1448870A2 A system and method for injecting gas into a hydrocarbon reservoir |
| 08/25/2004 | EP1448869A1 A system and method for injecting water into an underwater hydrocarbon reservoir |
| 08/25/2004 | EP1448868A1 Internally orientated perforating system |
| 08/25/2004 | EP1178922B1 Satellite separator platform (ssp) |
| 08/25/2004 | EP1075582B1 Subsea mud pump |
| 08/25/2004 | CN2635995Y Double-speed parameter adjustable sliding-proof assembling belt pulley for motor of fume exhauster |
| 08/25/2004 | CN2635946Y Oil and gas separator for electric oil submerged screw pump |
| 08/25/2004 | CN2635936Y Flexible reversing mechanism for preleading preset stepless adjusting rocking-arm slide-block mechanism |
| 08/25/2004 | CN2635918Y Interface tension utilized high-efficient gas lift device |
| 08/25/2004 | CN2635917Y Back wash device for mechanical sand prevention water injection well |
| 08/25/2004 | CN2635916Y High pressure oil feeder for sleeve pressing device of water injection well |
| 08/25/2004 | CN2635915Y Ceramic sand filtering pipe |
| 08/25/2004 | CN2635914Y Stainless steel board net type sand filtering pipe |
| 08/25/2004 | CN2635913Y Balancing tool for walking beam type oil suction machine |
| 08/25/2004 | CN2635912Y Straight line motor driven long stroke oil suction machine |
| 08/25/2004 | CN2635911Y Interactive balance oil suction machine with tandem walking for multiple wells |
| 08/25/2004 | CN1523203A Balance beam front and rear arm variable torque type well pumping unit |
| 08/25/2004 | CN1523200A Sand flushing, pump lowering one time pipe column technique and pump passing, sand flushing and sand filtering equipment |
| 08/24/2004 | US6780335 Introducing coil tubing into predetermined settlement region within conduit, tubing having inlet at settlement region and connected to aspirating means, whereby liquid is separated within settlement region, aspirated into tubing, and extracted |
| 08/24/2004 | US6779608 Surface pump assembly |
| 08/24/2004 | US6779607 Method and apparatus for acidizing a subterranean well formation for improving hydrocarbon production |
| 08/24/2004 | US6779605 Downhole tool deployment safety system and methods |
| 08/24/2004 | US6779604 Deformable gravel pack and method of forming |
| 08/24/2004 | CA2357680C Blasting apparatus for forming horizontal underground cavities and blasting method using the same |
| 08/19/2004 | WO2004070650A1 Wellbore treatment fluid selection interactive computer system |
| 08/19/2004 | WO2004070168A2 Post installation cured braided continuous composite tubular |
| 08/19/2004 | WO2004070166A1 Methods of preventing gravel loss in through-tubing vent-screen well completions |
| 08/19/2004 | WO2004070165A1 Device for collecting a product and for the tranquilization of a column in an undersea environment and use thereof |
| 08/19/2004 | WO2004069753A1 Method and plant for the purification of produced water |
| 08/19/2004 | WO2004069750A2 Recovery of products from oil shale |
| 08/19/2004 | WO2004051129A3 Expandable composite tubulars |
| 08/19/2004 | US20040160726 Microelectromechanical Devices |
| 08/19/2004 | US20040159466 Apparatus and methods for forming a lateral wellbore |
| 08/19/2004 | US20040159446 Methods and apparatus for reforming and expanding tubulars in a wellbore |
| 08/19/2004 | US20040159445 Apparatus and method |
| 08/19/2004 | US20040159442 Tension thrust ESPCP system |
| 08/19/2004 | US20040159437 Sub-sea blow case compressor |
| 08/19/2004 | US20040159436 Three-dimensional well system for accessing subterranean zones |
| 08/19/2004 | US20040159435 Apparatus and methods to complete wellbore junctions |
| 08/19/2004 | US20040159434 Providing a low pressure condition in a wellbore region |