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)
09/2012
09/26/2012CN202451121U Connection hanging cap for coal field perforation
09/26/2012CN202451120U High-flow underground oil-water separation and production-injection device for offshore oil production
09/26/2012CN202451119U Integrated tubular column for perforation, fracturing and transfer pumping
09/26/2012CN202451118U Reciprocating linear adjustable pumping unit
09/26/2012CN202451117U Regulator for hydraulic counterbalance block
09/26/2012CN202451116U Double-pumping energy-saving vertical pumping unit
09/26/2012CN202451115U Chemical injection sledge for ocean platform
09/26/2012CN202451111U Water injection control valve for water injection well
09/26/2012CN202451110U Wellhead one-way valve
09/26/2012CN202448107U Balance block adjusting device of rotary-tooth oil pumping unit
09/26/2012CN1844714B Reversing speed reducer
09/26/2012CN102695847A Hydraulic fracturing system
09/26/2012CN102695846A Process and apparatus to improve reliability of pinpoint stimulation operations
09/26/2012CN102695773A Compositions and methods for controlling the stability of ethersulfate surfactants at elevated temperatures
09/26/2012CN102691495A High-broken-pressure stratum horizontal well sectional-fracturing method for well cementation and completion of casing
09/26/2012CN102691494A Pneumatic embrittlement method and equipment for shale gas exploitation
09/26/2012CN102691493A Continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and casing fracturing method
09/26/2012CN102691492A System and process of screen pipe completion and cross oil layer cementing for steam injection heavy oil well
09/26/2012CN102691491A Energy-saving type oil pumping unit with balance automatically adjusted by liquid
09/26/2012CN102691490A Novel gas and oil mining and discharging machine
09/26/2012CN102690644A Binary alkali-free complex composition for flooding, suitable for high-temperature and high-salinity reservoir, and application thereof
09/26/2012CN102690643A Ternary complex composition for flooding and application thereof in tertiary oil recovery
09/26/2012CN102690642A Ternary complex composition for flooding, suitable for high-temperature and high-salinity reservoir, and application thereof
09/26/2012CN101857072B Unconditional stability equipped deep-draft floating production platform and offshore installation method thereof
09/26/2012CN101718193B Method for prolonging service life of screw pump by blending water into casing pipe sleeve of heavy oil well
09/26/2012CN101672177B Exploitation method for sea bed gas hydrate
09/26/2012CN101550818B Double-stroke flexible crank connecting device of pumping unit
09/26/2012CN101503957B Aboveground and underground combined heat injection coal bed gas extraction method
09/26/2012CN101225738B Oil field down-hole rotary type mechanical transmission means
09/26/2012CN101113665B Integrated pumping unit
09/25/2012US8273693 Polymeric gel system and methods for making and using same in hydrocarbon recovery
09/25/2012US8273692 Permeability-modifying drilling fluids and methods of use
09/25/2012US8272449 Methods for increasing oil production
09/25/2012US8272447 Methods and apparatus for drilling, completing and configuring U-tube boreholes
09/25/2012US8272443 Downhole progressive pressurization actuated tool and method of using the same
09/25/2012US8272442 In situ extraction of hydrocarbons from hydrocarbon-containing materials
09/25/2012US8272437 Enhanced geothermal systems and reservoir optimization
09/25/2012US8272436 Reducing methane slack when starting and stopping biogas fermenters
09/25/2012US8272435 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
09/25/2012CA2707740C Apparatus and method for utilising expandable sand screen in wellbores
09/25/2012CA2685607C Methods for stimulating oil or gas production
09/25/2012CA2666180C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
09/25/2012CA2633061C Method and apparatus for stimulating heavy oil production
09/21/2012CA2771577A1 Use of high ratio aqueous alkali silicates for profile modification, water control and stabilization
09/20/2012WO2012125933A2 Hydraulic fracture diverter apparatus and method thereof
09/20/2012WO2012125890A2 Controlled release biocides in oilfield applications
09/20/2012WO2012125412A1 Proppant particles formed from slurry droplets and method of use
09/20/2012WO2012125261A2 Flow control screen assembly having remotely disabled reverse flow control capability
09/20/2012WO2012125256A1 Method of injecting solvent into an underground reservoir to aid recovery hydrocarbons
09/20/2012WO2012125250A2 Valving system, method of adjusting a valve and method of fracing a wellbore
09/20/2012WO2012125249A2 System and method for fracturing a formation and a method of increasing depth of fracturing a formation
09/20/2012WO2012125219A2 Methods for treating siliciclastic hydrocarbon-bearing formations with fluorinated amine oxides
09/20/2012WO2012123461A2 Electrical and static fracturing of a reservoir
09/20/2012WO2012123458A2 Electrical reservoir fracturing
09/20/2012WO2012122720A1 Parallel passage-typed flow controller
09/20/2012WO2012122667A1 Betaine surfactants and preparation methods and uses thereof
09/20/2012WO2012122636A1 Method and apparatus of hydraulic fracturing
09/20/2012WO2012082488A3 Controlling flow of steam into and/or out of a wellbore
09/20/2012WO2012003101A3 System and method for controlling wellbore pressure
09/20/2012US20120237981 Amylases, nucleic acids encoding them and methods for making and using them
09/20/2012US20120237380 Downhole Backspin Retarder for Progressive Cavity Pump
09/20/2012US20120237366 Method and System for Prioritizing Vehicle Vacuum
09/20/2012US20120234556 Downhole artificial lifting system
09/20/2012US20120234555 Wellbore Method and Apparatus For Completion, Production and Injection
09/20/2012US20120234554 Geophysical Data Texture Segmentation Using Double-Windowed Clustering Analysis
09/20/2012US20120234552 Systems and Methods for Harvesting Natural Gas from Underwater Clathrate Hydrate Deposits
09/20/2012US20120234551 System and Method For Drilling A Well That Extends For A Large Horizontal Distance
09/20/2012US20120234547 Hydraulic fracture diverter apparatus and method thereof
09/20/2012US20120234546 System and method for fracturing a formation and a method of increasing depth of fracturing a formation
09/20/2012US20120234545 Valving system, method of adjusting a valve and method of fracing a wellbore
09/20/2012US20120234544 Degradable gels in zonal isolation applications
09/20/2012US20120234543 Organic Acid Compositions and Methods of Use in Subterranean Operations
09/20/2012US20120234539 Lubrication system for a reciprocating apparatus
09/20/2012US20120234537 Gravity drainage startup using rf & solvent
09/20/2012US20120234536 Enhanced recovery and in situ upgrading using rf
09/20/2012US20120234535 Method Of Injecting Solvent Into An Underground Reservoir To Aid Recovery Of Hydrocarbons
09/20/2012DE112010004889T5 Geformte Ladung Shaped charge
09/20/2012CA2829759A1 Controlled release biocides in oilfield applications
09/20/2012CA2829694A1 Proppant particles formed from slurry droplets and method of use
09/20/2012CA2828781A1 Oil recovery process for carbonate reservoirs
09/20/2012CA2826567A1 Flow control screen assembly having remotely disabled reverse flow control capability
09/19/2012EP2500568A2 Downhole backspin retarder for progresssive cavity pump
09/19/2012EP2499332A1 Low emission power generation and hydrocarbon recovery systems and methods
09/19/2012EP2499331A2 Downhole progressive pressurization actuated tool and method of using the same
09/19/2012EP2499330A1 Perforating gun with variable free gun volume
09/19/2012EP2499328A2 System and method for drilling a subsea well
09/19/2012EP2499326A1 Jacking units and bellows for down hole intervention tools
09/19/2012EP2499321A1 Injection drill bit
09/19/2012EP2499040A2 A method of installing a buoy and apparatus for tensioning a buoy to an anchoring location
09/19/2012CN202443490U Stroke-frequency monitor and beam pumping unit using stroke-frequency monitor
09/19/2012CN202442112U Large-flow quick water skid-mounted liquid preparing device
09/19/2012CN202442083U Centralized lubrication system of oil pumping unit
09/19/2012CN202441784U Brake apparatus of oil pumping unit and intelligent control system thereof
09/19/2012CN202441773U Safety brake device of oil pumping unit
09/19/2012CN202441355U Staged fracturing tool of U type oil-gas well
09/19/2012CN202441354U Oil field steam flooding injection production optimizing prediction device
09/19/2012CN202441353U Low pressure visualization two-dimensional sand-filling model used for heavy oil thermal recovery
09/19/2012CN202441352U Nitrogen foam flooding control device
09/19/2012CN202441351U Chemical feeding controlling device
09/19/2012CN202441350U Tubular column for catalytic oxidation oil production by injecting air and steam into selected reservoir
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