| 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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| 03/13/2013 | CN202788771U High-efficiency energy-conservation pumping unit |
| 03/13/2013 | CN202788770U Built-in type casing gas recovery device of pumping unit |
| 03/13/2013 | CN202788769U Novel hydraulic energy-saving pumping unit |
| 03/13/2013 | CN202788768U Walking beam type pumping unit dynamic balancing adjustment device |
| 03/13/2013 | CN202788767U Automatic frequency conversion device of pumping unit |
| 03/13/2013 | CN202788766U Gear and rack traveling oil extraction machine |
| 03/13/2013 | CN202788765U Braking retaining lock of pumping unit |
| 03/13/2013 | CN202788764U Adjusting device dedicated to crank balance weight of beam-pumping unit |
| 03/13/2013 | CN202788763U Multiple composite balance pumping unit |
| 03/13/2013 | CN202788762U Independently-balanced phase dislocation driven parallel type pumping unit |
| 03/13/2013 | CN202788761U Device for casing oil bailing in low-productive low-efficient well |
| 03/13/2013 | CN202788753U Differential-pressure sliding sleeve for staged fracturing of sidetrack horizontal wells |
| 03/13/2013 | CN202788752U Efficient emulsification one-way watering valve of heavy oil well pump |
| 03/13/2013 | CN202788735U Seat sealing ball seat specially used for slim-hole horizontal well |
| 03/13/2013 | CN202788720U Pipe-in-pipe steam injection wellhead device |
| 03/13/2013 | CN202788658U Hydraulic centralizer driving hydraulic cylinder |
| 03/13/2013 | CN202788648U Device for mounting tail tube to electric pump |
| 03/13/2013 | CN202788645U Novel oil extraction tubular column of oil field |
| 03/13/2013 | CN202788644U Novel flow string |
| 03/13/2013 | CN202788638U Cased hole completion multistage cracking horizontal well multistage segmentation release water exploration pipe column |
| 03/13/2013 | CN202787206U Reusable shoal water pitshaft structure |
| 03/13/2013 | CN202786164U Gas-sand separating device for natural gas well |
| 03/13/2013 | CN202786135U Super heavy oil steam treatment device |
| 03/13/2013 | CN202777936U Novel oil-gas separation device |
| 03/13/2013 | CN102971491A Thermal mobilization of heavy hydrocarbon deposits |
| 03/13/2013 | CN102971490A System and method for producing hydrocarbons from a well |
| 03/13/2013 | CN102971489A Sand production control through the use of magnetic forces |
| 03/13/2013 | CN102971488A Aquatic recovery and repair system (aars) |
| 03/13/2013 | CN102971487A Differential pressure controlled motor and pump barrier fluids pressure regulation system |
| 03/13/2013 | CN102971486A Collecting tank, system comprising collecting tank and multi-phase pumps, and method for separating and dividing up a multi-phase mixture |
| 03/13/2013 | CN102971484A Mitigating leaks in production tubulars |
| 03/13/2013 | CN102971483A Method employing pressure transients in hydrocarbon recovery operations |
| 03/13/2013 | CN102966372A Slotting induced-flow pressure-relief anti-reflection method for complicated seam |
| 03/13/2013 | CN102966341A Method for increasing stratum layer oil recovery factor by utilizing wastewater |
| 03/13/2013 | CN102966340A Microorganism circulating oil recovery method adopting mode of continuously filling low-concentration nutrient solution |
| 03/13/2013 | CN102966339A Insertion pipe type release separate-layer water injection string and operation process thereof |
| 03/13/2013 | CN102966338A Single well water production and injection process system capable of measuring flow rate and pressure |
| 03/13/2013 | CN102966337A Lining used on gravel filling tools |
| 03/13/2013 | CN102966336A Wind direct-driven oil pumping unit |
| 03/13/2013 | CN102966335A Transmission device of oil sucking machine |
| 03/13/2013 | CN102966334A Electric submersible pump system |
| 03/13/2013 | CN102966332A Sliding sleeve switch tool |
| 03/13/2013 | CN102966331A Valve for hydraulic fracturing through cement outside casing |
| 03/13/2013 | CN102966310A Induced flow device and method for water jet kerf in drilled hole |
| 03/13/2013 | CN102305998B Oil pumping unit closed-loop control method and system based on underground multiparameter real-time monitoring |
| 03/13/2013 | CN102279420B Development simulation test system of coal metamorphic evolution fissure system |
| 03/13/2013 | CN101915074B Oil field well casing gas recovery device and process |
| 03/13/2013 | CN101821355B Installation for tertiary oil recovery using water-soluble polymers, method implementing same |
| 03/13/2013 | CN101749004B Control method of interlayer rock salt cavern building with water solution in underground oil and gas storage |
| 03/13/2013 | CN101747886B Fracturing fluid stock solution, full-filling preposition-free sand adding fracturing method and fracturing fluid cross-linking solution thereof |
| 03/13/2013 | CN101680296B Apparatus, system, and method for determining injected fluid vertical placement |
| 03/13/2013 | CN101360945B tubular threaded joints and its female element, and method for determining effect of scratching energy absorbing device |
| 03/13/2013 | CN101328799B Sand prevention clamp sand spraying device and its use method |
| 03/13/2013 | CN101296738B Separator for separating a solid, liquid and/or gas mixture |
| 03/13/2013 | CA2752655A1 Pump with wear sleeve |
| 03/12/2013 | US8396610 System for detecting a suspected area |
| 03/12/2013 | US8393396 Subterranean valve operated by string relative movement |
| 03/12/2013 | US8393395 Use of encapsulated chemical during fracturing |
| 03/12/2013 | US8393394 Methods for strengthening fractures in subterranean formations |
| 03/12/2013 | US8393393 Coupler compliance tuning for mitigating shock produced by well perforating |
| 03/12/2013 | US8393390 Polymer hydration method |
| 03/12/2013 | CA2799112A1 Multifunctional boronic acid crosslinking agents and associated methods |
| 03/12/2013 | CA2789567A1 A system and method of liquefying a heavy oil formation for enhanced hydrocarbon production |
| 03/12/2013 | CA2788985A1 Tools and methods for use in completion of a wellbore |
| 03/12/2013 | CA2770651A1 Steam generation |
| 03/12/2013 | CA2700212C Insertable progressive cavity pump |
| 03/12/2013 | CA2662055C Systems and methods to retard rod string backspin |
| 03/12/2013 | CA2645873C A downhole system and an immersion hydraulic machine for extraction of fluids |
| 03/12/2013 | CA2469247C A method and means for recovering hydrocarbons from oil sands by underground mining |
| 03/09/2013 | CA2752022A1 Apparatus for reducing operationally induced deformities in well production screens |
| 03/08/2013 | CA2791134A1 Process for producing mineral oil from underground mineral oil deposits |
| 03/07/2013 | WO2013033542A2 Degradable shaped charge and perforating gun system |
| 03/07/2013 | WO2013033537A2 Method of using a degradable shaped charge and perforating gun system |
| 03/07/2013 | WO2013033535A2 Degradable high shock impedance material |
| 03/07/2013 | WO2013033492A1 Dual function proppants |
| 03/07/2013 | WO2013033391A1 Self-suspending proppants for hydraulic fracturing |
| 03/07/2013 | WO2013033306A1 Well emergency separation tool for use in separating a tubular element |
| 03/07/2013 | WO2013033149A1 Method and system for sealing and handling pipe |
| 03/07/2013 | WO2013033038A2 System for subsea extraction of gaseous materials from, and prevention, of hydrates |
| 03/07/2013 | WO2013032991A2 Disappearing perforating gun system |
| 03/07/2013 | WO2013032987A1 Piping system having an insulated annulus |
| 03/07/2013 | WO2013032456A1 Perforating gun with internal shock mitigation |
| 03/07/2013 | WO2013030599A1 A connector arrangement for a subsea pipeline |
| 03/07/2013 | WO2013030555A2 Determining perforation orientation |
| 03/07/2013 | WO2013030282A1 Disconnecting tool |
| 03/07/2013 | WO2013008195A3 System and method for performing wellbore stimulation operations |
| 03/07/2013 | WO2013002848A3 Extrusion-resistant seals for expandable tubular assembly |
| 03/07/2013 | WO2012177460A3 Production system and method of varying restrictions to flow along the same |
| 03/07/2013 | WO2012148578A4 Centrifugal subterranean debris collector |
| 03/07/2013 | WO2012112825A3 Anchoring seal |
| 03/07/2013 | WO2012112668A8 Surface close proximity wells |
| 03/07/2013 | US20130058722 Aquatic Recovery and Repair System |
| 03/07/2013 | US20130056269 Degradable shaped charge and perforating gun system |
| 03/07/2013 | US20130056221 Flow control device and flow control method |
| 03/07/2013 | US20130056215 Disintegrative Particles to Release Agglomeration Agent for Water Shut-Off Downhole |
| 03/07/2013 | US20130056214 Reducing sulfide in production fluids during oil recovery |
| 03/07/2013 | US20130056213 Heterogeneous Proppant Placement |
| 03/07/2013 | US20130056212 Perforating stimulating bullet |
| 03/07/2013 | US20130056211 Polyamine-dihydroxybenzoic acid conjugate hydrogels as iron chelators |
| 03/07/2013 | US20130056208 Method of using a degradable shaped charge and perforating gun system |