Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › 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)
04/2003
04/09/2003CN2544095Y Constant quantity vapour filling valve
04/09/2003CN1409799A System for producing de-watered oil
04/09/2003CN1408986A Breaking method and device for underground well structure layer
04/09/2003CN1408985A Bullet type perforating device for oil-gas well
04/09/2003CN1408499A Control process for laser cutting sieve tube
04/09/2003CN1105274C Method for developing geothermal energy using waste well
04/08/2003US6543552 Method and apparatus for drilling and lining a wellbore
04/08/2003US6543545 Expandable sand control device and specialized completion system and method
04/08/2003US6543543 Pump systems and methods
04/08/2003US6543542 Crude oil recovery system
04/08/2003US6543539 Perforated casing method and system
04/08/2003US6543538 Method for treating multiple wellbore intervals
04/08/2003US6543537 Method and apparatus for producing an oil reservoir
04/08/2003US6543534 Downhole jet pump
04/08/2003US6543533 Well tubing rotator
04/08/2003CA2051182C Product and process for acid diversion in the treatment of subterranean formations
04/08/2003CA2043970C Treating an underground formation
04/03/2003WO2003027436A1 Profiled recess for instrumented expandable components
04/03/2003WO2003027435A1 Profiled encapsulation for use with instrumented expandable tubular completions
04/03/2003WO2003027431A2 Method and materials for hydraulic fracturing of wells
04/03/2003WO2002053867B1 Mono-diameter wellbore casing
04/03/2003US20030063952 Gas storage and production system
04/03/2003US20030062198 Method and system for hydraulic friction controlled drilling and completing geopressured wells utilizing concentric drill strings
04/03/2003US20030062171 Method and apparatus for expanding and separating tubulars in a wellbore
04/03/2003US20030062170 Slotting geometry for metal pipe and method of use of the same
04/03/2003US20030062167 System and method for fracturing a subterranean well formation for improving hydrocarbon production
04/03/2003US20030062166 Method for acid stimulating a subterranean well formation for improving hydrocabon production
04/03/2003US20030062164 In situ thermal processing of a hydrocarbon containing formation to produce nitrogen containing formation fluids
04/03/2003US20030062162 Utilizing foam diversion in the well formation.
04/03/2003US20030062160 Methods and fluid compositions designed to cause tip screenouts
04/03/2003US20030062159 Hydrocarbon production process with decreasing steam and/or water/solvent ratio
04/03/2003US20030062154 In situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore
04/03/2003US20030062153 Hydraulic firing head
04/03/2003CA2666045A1 Profiled encapsulation for use with instrumented expandable tubular completions
04/02/2003EP1298282A2 Method and apparatus for acidizing a subterranean well formation
04/02/2003EP1298281A1 Acid stimulating with downhole foam mixing
04/02/2003EP1298280A1 Fracturing with downhole foam mixing
04/02/2003EP1242881A4 Method and system for simulating a hydrocarbon-bearing formation
04/02/2003EP1060326B1 Oilfield in situ hydrocarbon upgrading process
04/02/2003EP1042708B1 Fluidic level control systems
04/02/2003EP0871817B1 Apparatus for setting a liner in a well casing
04/02/2003CN2542856Y Tension bearing mechanism of electric submersible screw pump
04/02/2003CN2542827Y Downhole string buffer
04/02/2003CN2542826Y Wheel pumping unit
04/02/2003CN1407207A Shallow drill assembly with separate jet pump
04/02/2003CN1104358C Offshore production and storage facility and method of installing same
04/01/2003US6540022 Method and apparatus for frac/gravel packs
04/01/2003US6539888 Working ship
04/01/2003CA2228415C One-trip well perforation/proppant fracturing apparatus and methods
03/2003
03/28/2003CA2357884A1 Hydraulic firing head
03/27/2003WO2003025336A1 Active controlled bottomhole pressure system & method
03/27/2003WO2003024605A2 Underwater scrubbing of co2 from co2-containing hydrocarbon resources
03/27/2003WO2003014522A9 In-situ evaporation
03/27/2003US20030060375 Method of oil/gas well stimulation
03/27/2003US20030060374 Method and materials for hydraulic fracturing of wells
03/27/2003US20030056991 Apparatus and method for simultaneous drilling and casing wellbores
03/27/2003US20030056982 Method and apparatus for protecting explosives
03/27/2003US20030056959 Screen jacket assembly connection and methods of using same
03/27/2003US20030056958 Gas lift assembly
03/27/2003US20030056957 Method for improving well quality
03/27/2003US20030056954 Methods and apparatus for a subsea tie back
03/27/2003US20030056953 Method and apparatus for plugging a wellbore
03/27/2003US20030056952 Tracker injection in a production well
03/27/2003US20030056949 Wellbore casing
03/27/2003US20030056948 Profiled encapsulation for use with instrumented expandable tubular completions
03/27/2003US20030056947 Profiled recess for instrumented expandable components
03/27/2003DE19927020C2 Verfahren zum unterirdischen Verlegen von Entwässerungskanälen und Preßschacht zur Durchführung des Verfahrens A method for underground laying of drainage channels and Preßschacht for performing the method
03/26/2003EP1296019A1 Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments
03/26/2003EP1295060A1 Tubular threaded joint capable of being subjected to diametral expansion
03/26/2003EP1295035A1 Isolation container for a downhole electric pump
03/26/2003EP1295011A2 Apparatus and method to complete a multilateral junction
03/26/2003EP1080296B1 Deformable liner tube
03/26/2003EP1032489B1 Method and apparatus for manufacturing an expandable slotted tube
03/26/2003CN2541665Y Ratchet intermittent releasing gear of reverse proof appts.
03/26/2003CN2541631Y Monostage centrifugal pump body for petroleum drilling slurry
03/26/2003CN2541603Y Balance water filling column
03/26/2003CN2541602Y Multi-staged combined widowmaker
03/26/2003CN2541601Y Fault warning protector of beam pump
03/26/2003CN2541600Y Flexibly trailed tail boom sliding balancer of beam pump
03/26/2003CN1406311A Choke inductor for wireless communication and control in a well
03/26/2003CN1405430A Shaft-well directional perforating technique
03/26/2003CN1405264A Composition for washing oil-gas well, pipeline, sleeve pipe, stratum and equipments and using method thereof
03/25/2003US6537628 Reinforced elastomeric bag for use with electric submergible motor protectors
03/25/2003US6537458 Three-phase separator
03/25/2003US6537349 Passive low pressure flash gas compression system
03/25/2003US6536528 Extended reach tie-back system
03/25/2003US6536527 Connection system for catenary riser
03/25/2003US6536524 Method and system for performing a casing conveyed perforating process and other operations in wells
03/25/2003US6536523 Water treatment process for thermal heavy oil recovery
03/25/2003US6536522 Artificial lift apparatus with automated monitoring characteristics
03/25/2003US6536521 Multi-stage liquid elevator
03/25/2003CA2100328C Method of microbial enhanced oil recovery
03/20/2003WO2003023449A1 Concentrating seismic energy in a selected target point in an underground formation
03/20/2003WO2003023188A1 Well completion method, including integrated approach for fracture optimization
03/20/2003WO2003023187A1 Method for creating a polished bore receptacle
03/20/2003WO2003023186A1 An expandable hanger and packer
03/20/2003WO2003023185A1 Adjustable well screen assembly
03/20/2003WO2003023183A1 Device for acoustical stimulation on a bottom-hole area of productive formations
03/20/2003WO2003023180A2 Acid gas disposal method
03/20/2003WO2003023179A2 System for lining a wellbore casing
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