| 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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| 07/29/2008 | US7406398 System and method for determining pump underperformance |
| 07/29/2008 | US7404695 Seafloor-surface connecting installation of a submarine pipeline installed at great depth |
| 07/29/2008 | US7404444 Protective sleeve for expandable tubulars |
| 07/29/2008 | US7404442 Method of recycling fracturing fluids using a self-degrading foaming composition |
| 07/29/2008 | US7404441 Hydraulic feature initiation and propagation control in unconsolidated and weakly cemented sediments |
| 07/29/2008 | US7404439 Horizontal drilling |
| 07/29/2008 | US7404438 Solid expandable tubular members formed from very low carbon steel and method |
| 07/29/2008 | US7404437 Annular isolators for expandable tubulars in wellbores |
| 07/29/2008 | CA2495580C A gas-liquid separator positionable down hole in a well bore |
| 07/29/2008 | CA2461718C Tubular expansion apparatus and method |
| 07/29/2008 | CA2390889C Method and apparatus for selective injection or flow control with through-tubing operation capacity |
| 07/29/2008 | CA2383150C Expandable downhole tubing |
| 07/29/2008 | CA2351148C Method and apparatus for stimulating heavy oil production |
| 07/29/2008 | CA2293686C Control and monitoring system for chemical treatment of an oilfield well |
| 07/24/2008 | WO2008089345A1 Method of performing integrated oilfield operations |
| 07/24/2008 | WO2008089071A2 Subterranean electro-thermal heating system and method |
| 07/24/2008 | WO2008087154A1 Process and apparatus for enhanced hydrocarbon recovery |
| 07/24/2008 | WO2008070193A3 Perforating gun assembly with auger to control wellbore fluid dynamics |
| 07/24/2008 | WO2008067154A3 Expandable wellbore liner |
| 07/24/2008 | WO2008064233A3 Perforating gun assembly with auger to control wellbore fluid dynamics |
| 07/24/2008 | WO2008048448A3 Heating an organic-rich rock formation in situ to produce products with improved properties |
| 07/24/2008 | WO2008032201A3 Production optimization in an oil and/or gas production system |
| 07/24/2008 | WO2008002819A3 Rotary pressure transfer devices |
| 07/24/2008 | US20080173765 Airframe structure of an aircraft or spacecraft |
| 07/24/2008 | US20080173455 Ported velocity tube for gas lift operations |
| 07/24/2008 | US20080173452 Compositions and methods for breaking a viscosity increasing polymer at very low temperature used in downhole well applications |
| 07/24/2008 | US20080173451 Methods for increasing gas production from a subterranean formation |
| 07/24/2008 | US20080173448 Methods for treating intervals of a subterranean formation having variable permeability |
| 07/24/2008 | US20080173447 Sustainable method for recovery of petroleum |
| 07/24/2008 | US20080173446 Method and Device For Fluid Displacement |
| 07/24/2008 | US20080173444 Alternate energy source usage for in situ heat treatment processes |
| 07/24/2008 | US20080173443 Methods of treating a subterranean formation to convert organic matter into producible hydrocarbons |
| 07/24/2008 | US20080173442 Sulfur barrier for use with in situ processes for treating formations |
| 07/24/2008 | US20080173440 System for injecting water, collected from a subterranean aquifer, into an oil reservoir |
| 07/24/2008 | CA2675807A1 Process and apparatus for enhanced hydrocarbon recovery |
| 07/24/2008 | CA2674601A1 Method of performing integrated oilfield operations |
| 07/24/2008 | CA2673854A1 Subterranean electro-thermal heating system and method |
| 07/23/2008 | EP1946272A2 Method and apparatus for coupling expandable tubular members |
| 07/23/2008 | EP1945907A2 A process for foaming a wet hydrocarbon composition |
| 07/23/2008 | EP1945906A2 System and method for performing multiple downhole operations |
| 07/23/2008 | EP1945905A1 Monitoring formation properties |
| 07/23/2008 | EP1945902A1 Device for controlling slugging |
| 07/23/2008 | EP1945328A1 Hydrocyclone |
| 07/23/2008 | CN201090426Y Disjointing device for oil pump |
| 07/23/2008 | CN201090424Y Pumping unit brake safety hooking apparatus |
| 07/23/2008 | CN201090419Y Pumping unit balance weight moving equipment |
| 07/23/2008 | CN201090418Y Hydraulic pressure-driven gear oil well pump |
| 07/23/2008 | CN201090417Y Pump down vibration anti-block apparatus |
| 07/23/2008 | CN201090416Y Light load soft hoisting energy saving oil jack |
| 07/23/2008 | CN201090415Y Tubing pump with short pump barrel and long plunger capable of automatically draining oil |
| 07/23/2008 | CN201090414Y Oil inlet and sand deposit apparatus of oil-well pump with sands-proof check |
| 07/23/2008 | CN201090413Y Oil well pump connecting segregator |
| 07/23/2008 | CN201090412Y Oil well pump of thick oil and high pour-point oil for pouring vapor and extracting oil |
| 07/23/2008 | CN201090411Y Plunger type unpowered oil pumping device |
| 07/23/2008 | CN201090410Y Pumping unit energy saving power unit |
| 07/23/2008 | CN201090204Y Oil well mouth simple dewatering device subsiding step by step |
| 07/23/2008 | CN201090203Y Thick oil hot-picking borehole heater |
| 07/23/2008 | CN201090202Y Heat insulation pipe without coupling |
| 07/23/2008 | CN201090201Y Antisepsis fire resistant heat insulation pipe |
| 07/23/2008 | CN201090200Y Nitrogen gas foam generator |
| 07/23/2008 | CN201090199Y Two-level three-segment injection-divided tubular pile capable of preventing water injection segment from inverse-spraying and channelling |
| 07/23/2008 | CN201090198Y One-level two-segment injection-divided tubular pile capable of preventing water injection segment from inverse-spraying and channelling |
| 07/23/2008 | CN201090197Y Three-level four-segment injection-divided tubular pile capable of preventing water injection segment from inverse-spraying and channelling |
| 07/23/2008 | CN201090196Y Underground hollow constant flux water distributor |
| 07/23/2008 | CN201090195Y Water distributor capable of injecting water inversion |
| 07/23/2008 | CN201090194Y Adjustable flux water distributor |
| 07/23/2008 | CN201090193Y Discharging-aid arrangement for injecting nitrogen gas into thick oil well |
| 07/23/2008 | CN201090192Y Down-hole perforating tool for oil well perforating machine |
| 07/23/2008 | CN201090191Y Chute type sand prevention pipe for oil field and oil well |
| 07/23/2008 | CN201090190Y Compression type flushing sand control device for oil-pumping well |
| 07/23/2008 | CN201090189Y Direct neutralization oil pump driven by switch reluctance motor |
| 07/23/2008 | CN201090188Y Fixedly tubular pile delamination hydraulic jet perforating and compression fracture integration tubular pile |
| 07/23/2008 | CN201090187Y Anti-block equipment for halogen-picking pipe in underground |
| 07/23/2008 | CN201090186Y Three-low oil-layer picking-divide synchronization pumping tubing string |
| 07/23/2008 | CN201090185Y Mobile multifunctional apparatus for recovery of dirty oil |
| 07/23/2008 | CN201090184Y New type pumping unit |
| 07/23/2008 | CN201090183Y On-condition maintenance safety holder for oil pump |
| 07/23/2008 | CN201090176Y Sliding bush type valve seat regulating valve |
| 07/23/2008 | CN101228334A Apparatus and method for driving casing or conductor pipe |
| 07/23/2008 | CN101225738A Oil field down-hole rotary type mechanical transmission means |
| 07/23/2008 | CN100404952C Process for using hot coal gas as viscous crude thermal recovery and gas injection boiler fuel |
| 07/23/2008 | CN100404946C Dynamic control method for hydrate in oil-gas-water mixed system |
| 07/23/2008 | CN100404785C Method of creating a borehole in an earth formation |
| 07/22/2008 | US7402000 Spool piece termination structure, a connection arrangement comprising such a termination structure and a pipeline termination |
| 07/22/2008 | US7401704 Conveyor apparatus |
| 07/22/2008 | US7401655 Downhole gas compressor |
| 07/22/2008 | US7401653 Substances to stimulate the extraction of crudeoil and a method of processing them |
| 07/22/2008 | US7401652 Multi-perf fracturing process |
| 07/22/2008 | US7401651 Wellbore fluid saver assembly |
| 07/22/2008 | US7401650 Apparatus and methods for radially expanding a tubular member |
| 07/22/2008 | US7401648 One trip well apparatus with sand control |
| 07/22/2008 | US7401647 Flush mounted tubular patch |
| 07/22/2008 | US7401645 Downhole fluid disposal apparatus and methods |
| 07/22/2008 | CA2565697C Shock-release fluid fracturing method and apparatus |
| 07/22/2008 | CA2506458C Recoverable, reinforced and vibration-damping plug used for cased wells |
| 07/22/2008 | CA2493518C System and method for sensing load on a downhole tool |
| 07/22/2008 | CA2466606C Riser pipe gas separator for well pump |
| 07/22/2008 | CA2407734C Method and system for gas-lifting well effluents |
| 07/22/2008 | CA2367075C Method and system for testing a borehole by the use of a movable plug |
| 07/22/2008 | CA2336566C Methods of completing unconsolidated subterranean producing zones |