| 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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| 05/15/2013 | CN102128017B Counterweight balance petroleum pumping unit |
| 05/15/2013 | CN102086390B Solidfree well killing fluid for acidic oil-gas reservoir |
| 05/15/2013 | CN102031956B Built-in method of oil deposit physical model mineshaft |
| 05/15/2013 | CN101967968B Three-cavity pressure separation device in high-temperature high-pressure container |
| 05/15/2013 | CN101899967B Well completion technology for increasing water yield in poor aquifer |
| 05/15/2013 | CN101705802B Anti-crossflow packing particles for production sections of oil and gas wells |
| 05/15/2013 | CN101498211B Method for water distribution by sound wave remote control and the matched intelligent water distributor |
| 05/14/2013 | US8440077 Combined degassing and flotation tank |
| 05/14/2013 | US8439116 Method for inducing fracture complexity in hydraulically fractured horizontal well completions |
| 05/14/2013 | US8439115 Methods of chemical diversion of scale inhibitors |
| 05/14/2013 | US8439114 Method and apparatus for orienting perforating devices |
| 05/14/2013 | US8439112 Method and system for surface filtering of solids from return fluids in well operations |
| 05/14/2013 | US8439111 Hydrocarbon recovery process |
| 05/14/2013 | US8439110 Single packer system for use in heavy oil environments |
| 05/14/2013 | US8439108 Application of degradable polymers in sand control |
| 05/14/2013 | CA2795810A1 Seat assembly for isolating fracture zones in a well |
| 05/14/2013 | CA2787510C Control valve assembly |
| 05/14/2013 | CA2712121C Subsurface nuclear measurement systems, methods and apparatus |
| 05/14/2013 | CA2700661C Gas lift valve |
| 05/14/2013 | CA2692794C Methods and compositions for preventing high density well completion fluid loss |
| 05/14/2013 | CA2656205C Rheology controlled heterogeneous particle placement in hydraulic fracturing |
| 05/14/2013 | CA2635761C Low density proppant particles and use thereof |
| 05/14/2013 | CA2599211C Use of water-soluble alkane sulfonic acids for increasing the permeability of underground petroliferous and/or gas-bearing carbonate rock formations and for dissolving carbonate contaminants and/or contaminants containing carbonates during petroleum production |
| 05/14/2013 | CA2492981C Monobore wellbore and method for completing same |
| 05/11/2013 | CA2794296A1 Gravel pack crossover tool with low drag profile |
| 05/11/2013 | CA2793339A1 Metallic particle induced saponification of fatty acids as breakers for viscoelastic surfactant-gelled fluids |
| 05/10/2013 | WO2013067187A2 High energy in-line hydraulic shearing unit for oilfield drilling fluids |
| 05/10/2013 | WO2013066772A1 Multiple electrical connections to optimize heating for in situ pyrolysis |
| 05/10/2013 | WO2013066691A1 Perforating gun spacer |
| 05/10/2013 | WO2013066655A1 Power generation at a subsea location |
| 05/10/2013 | WO2013066637A1 Flow isolation sub for tubing operated differential pressure firing head |
| 05/10/2013 | WO2013066579A2 Method of processing a hydrocarbon resource including supplying rf energy using an extended well portion |
| 05/10/2013 | WO2013066431A1 Lateral buckling mitigation apparatus, methods and systems for use with subsea conduits |
| 05/10/2013 | WO2013066358A2 Statistical reservoir model based on detected flow events |
| 05/10/2013 | WO2013066295A1 Autonomus fluid control device having a movable valve plate for downhole fluid selection |
| 05/10/2013 | WO2013066291A1 Autonomous fluid control device having a reciprocating valve for downhole fluid selection |
| 05/10/2013 | WO2013064650A1 Solid formulations suitable for oilfield applications |
| 05/10/2013 | WO2013063809A1 Hoist-type pulling oil extraction system and method for manufacturing oil-pumping rope thereof |
| 05/10/2013 | WO2013040427A3 Methods of using oleaginous fluids for completion operations |
| 05/10/2013 | WO2013039663A3 Magnetically coupled safety valve with satellite inner magnets |
| 05/10/2013 | WO2013032991A3 Disappearing perforating gun system |
| 05/10/2013 | WO2013025924A3 Vertically compactable fluid transfer device |
| 05/10/2013 | WO2012170157A3 Hydrocarbon recovery through gas production control for noncondensable solvents or gases |
| 05/10/2013 | WO2012156434A3 Method and system for protecting a conduit in an annular space around a well casing |
| 05/10/2013 | WO2012109129A3 Partially retrievable safety valve |
| 05/10/2013 | WO2012088068A3 Method for mobility control in oil-bearing carbonate formations |
| 05/10/2013 | WO2012051705A9 Tools and methods for use in completion of a wellbore |
| 05/10/2013 | WO2012030843A8 Methods for completing multi-zone production wells using sliding sleeve valve assembly |
| 05/10/2013 | CA2854486A1 Lateral buckling mitigation apparatus, methods and systems for use with subsea conduits |
| 05/10/2013 | CA2854123A1 Power generation at a subsea location |
| 05/10/2013 | CA2848963A1 Autonomous fluid control device having a movable valve plate for downhole fluid selection |
| 05/10/2013 | CA2848734A1 High energy in-line hydraulic shearing unit for oilfield drilling fluids |
| 05/10/2013 | CA2845012A1 Multiple electrical connections to optimize heating for in situ pyrolysis |
| 05/10/2013 | CA2844638A1 Autonomous fluid control device having a reciprocating valve for downhole fluid selection |
| 05/09/2013 | US20130116126 Compositions and methods for identifying and modifying carbonaceous compositions |
| 05/09/2013 | US20130112431 System and method for direct drive pump |
| 05/09/2013 | US20130112419 Process and process line for the preparation of hydraulic fracturing fluid |
| 05/09/2013 | US20130112413 Controlled Release Breaker Composition for Oil Field Applications |
| 05/09/2013 | US20130112412 Settable well tool and slips |
| 05/09/2013 | US20130112411 Perforator charge having an energetic material |
| 05/09/2013 | US20130112409 Proppant particulates and methods of using such particulates in subterranean applications |
| 05/09/2013 | US20130112407 Obtaining Data From An Earth Model Using Functional Descriptors |
| 05/09/2013 | US20130112401 Downhole electrical energy conversion and generation |
| 05/09/2013 | US20130112400 Wellbore fluid treatment and method |
| 05/09/2013 | US20130112399 Erosion Resistant Flow Nozzle for Downhole Tool |
| 05/09/2013 | US20130112394 Oilfield Application of Solar Energy Collection |
| 05/09/2013 | CA2794302A1 Erosion resistant flow nozzle for downhole tool |
| 05/08/2013 | EP2589765A1 Solar plant for enhanced oil recovery |
| 05/08/2013 | EP2589639A1 Solid formulations suitable for oilfield applications |
| 05/08/2013 | EP2589115A1 Safety device |
| 05/08/2013 | EP2588716A1 Method for in situ fluid assessment and optimization during wellbore displacement operations |
| 05/08/2013 | EP2588714A2 High solids content slurries and methods |
| 05/08/2013 | EP2588713A1 Fracturing system |
| 05/08/2013 | EP2588711A2 Flow control valve for polymer solutions |
| 05/08/2013 | EP2588710A2 Mitigating leaks in production tubulars |
| 05/08/2013 | DE112011102419T5 Bohrlochwerkzeug mit nanopartikelverstärkter Metallbeschichtung Downhole tool with nanoparticle-enhanced metal coating |
| 05/08/2013 | CN202931252U Intelligent power saving and distributing device for oil pumping machine |
| 05/08/2013 | CN202926926U Oil beam type oil pumping unit braking apparatus |
| 05/08/2013 | CN202926569U One-station multi-well type rodless hydraulic oil extraction system |
| 05/08/2013 | CN202926404U Fracturing unit driven by turbine engine |
| 05/08/2013 | CN202926315U Sand-filled pipe |
| 05/08/2013 | CN202926307U Well washing protective gas anchor |
| 05/08/2013 | CN202926306U Oil gas sampling separation drum |
| 05/08/2013 | CN202926305U Water distributor |
| 05/08/2013 | CN202926304U Packaging structure of composite perforating bullets |
| 05/08/2013 | CN202926303U Spraying gun for sand blast, perforation and fracturing with high backward splash resistance |
| 05/08/2013 | CN202926302U Pylon type oil pumping unit |
| 05/08/2013 | CN202926301U Magnetic force driving oil pumping machine |
| 05/08/2013 | CN202926300U Power mechanism of power descending tower pumping unit |
| 05/08/2013 | CN202926299U Power descending tower pumping unit |
| 05/08/2013 | CN202926298U Dual-drive non-contact transmission type vertical pumping unit |
| 05/08/2013 | CN202926297U Multifunctional vertical oil pumping machine with underlying driving system arranged at lower part |
| 05/08/2013 | CN202926296U Balance adjusting device for walking beam of pumping unit |
| 05/08/2013 | CN202926295U Cluster-type hydraulic pressure pumping unit |
| 05/08/2013 | CN202926294U Intelligent electricity-saving oil pumping unit |
| 05/08/2013 | CN202926293U Fully-automatic hydraulic oil pumping machine |
| 05/08/2013 | CN202926211U Mining hydraulic working machine |
| 05/08/2013 | CN202923455U Crane and movable oil fishing dual-purpose truck |
| 05/08/2013 | CN103097653A Assembly and method for multi-zone fracture stimulation of a reservoir autonomous tubular unit |
| 05/08/2013 | CN103097652A Polymer foam cell morphology control and use in borehole filtration devices |