Patents
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)
10/1976
10/26/1976US3987851 Serially burning and pyrolyzing to produce shale oil from a subterranean oil shale
10/26/1976US3987850 Well completion method for controlling sand production
10/26/1976US3987848 Pressure-balanced well service valve
10/26/1976US3987846 Wellhead shut-off valve
10/26/1976US3987638 Subsea structure and method for installing the structure and recovering the structure from the sea floor
10/19/1976US3986558 Petroleum extraction method and assembly
10/19/1976US3986557 Production of bitumen from tar sands
10/19/1976US3986556 Hydrocarbon recovery from earth strata
10/19/1976US3986552 Pumping system for high viscosity oil
10/05/1976US3983941 Well completion technique for sand control
10/05/1976US3983939 Method for recovering viscous petroleum
10/05/1976US3983937 Method of connection of an undersea well to a flexible outflow pipe
09/1976
09/28/1976USRE28978 Fail-safe subsea fluid transportation system
09/28/1976US3982589 Cleaning and pumping apparatus for oil well production
09/21/1976US3981626 Down hole pump and method of deep well pumping
09/21/1976US3981624 Sonic or energy wave generator and modulator
09/21/1976US3981362 Fracturing
09/21/1976US3981359 Centralizer element for well screen
09/21/1976US3981189 Methods and steam samplers with inertial latch
09/21/1976US3981154 System for recovering petroleum fluids from underwater fissures
09/14/1976USRE28963 Determination of residual oil in a formation
09/14/1976US3980339 Process for recovery of carbonaceous materials from subterranean deposits
09/14/1976US3980138 Underground fluid recovery device
09/14/1976US3980137 Combustible fuel and oxygen
09/14/1976US3980136 Fracturing well formations using foam
09/07/1976US3978926 Tar sand in hydrocarbon solvent
09/07/1976US3978925 Method for recovery of bitumens from tar sands
09/07/1976US3978923 Injection sub for dual tube drilling
09/07/1976US3978921 Apparatus for cryothermal fracturing of rock formations
09/07/1976US3978920 In situ combustion process for multi-stratum reservoirs
08/1976
08/31/1976US3977478 Method for laser drilling subterranean earth formations
08/31/1976US3977473 Well tubing anchor with automatic delay and method of installation in a well
08/31/1976US3977472 Method of fracturing subterranean formations using oil-in-water emulsions
08/31/1976US3977469 Conservation of water for core flow
08/24/1976US3976582 Optimizing petroleum recovery micellar systems utilizing zeta potential
08/24/1976US3976139 Anchoring for tensioning casing in thermal wells
08/24/1976US3976138 Method of increasing permeability in subsurface earth formation
08/24/1976US3976137 Recovery of oil by a combination of low temperature oxidation and hot water or steam injection
08/24/1976US3976135 Method of forming a highly permeable solid mass in a subterranean formation
08/17/1976US3974878 Method and apparatus for artificial lift from multiple production zones
08/17/1976US3974877 Sand control method employing low temperature oxidation
08/17/1976US3974876 Downhole fluid flow regulator
08/10/1976US3974077 Fracturing subterranean formation
08/10/1976US3973630 Wash-out tool and method of use thereof
08/10/1976US3973629 Injection profiles with radiation induced copolymers
08/10/1976US3973628 In situ solution mining of coal
08/10/1976US3973627 Wellbore gravel pack method
08/10/1976US3973625 Underwater connection apparatus
08/10/1976US3973311 Method of forming high load self-cleaning helical spring filters
08/03/1976US3972648 Well controller and monitor
08/03/1976US3972372 Exraction of hydrocarbons in situ from underground hydrocarbon deposits
08/03/1976US3972352 Discharge element for a liquid-gas separator unit
07/1976
07/27/1976US3971719 Three-phase separator
07/27/1976US3971440 Method for treating subterranean formations with cellulose ether-polyacrylamide aqueous gels
07/27/1976US3971439 Designing micellar displacement systems to minimize adsorption
07/27/1976US3971437 Apparatus for dewatering boreholes
07/27/1976US3971317 Detonation system and method
07/20/1976US3970146 Sonic cleaning of wells
07/20/1976US3970143 Oil well production system
07/13/1976US3968847 Wellpoint jetting head
07/13/1976US3968840 Controlled rate acidization process
07/13/1976US3968839 Subsurface flow control apparatus
07/13/1976US3968838 Underwater connection apparatus
07/06/1976US3967853 Producing shale oil from a cavity-surrounded central well
07/06/1976US3967682 Method of producing hydrocarbons from an unconsolidated formation
07/06/1976US3967678 Stuffing box control system
07/06/1976US3967675 Method and device for exploiting the geothermal energy in a submarine volcano
07/06/1976US3967462 Method and apparatus for joining a subsea pipeline to an offshore platform riser
06/1976
06/29/1976US3966236 Releasable coupling
06/29/1976US3965993 Well bore perforating apparatus
06/29/1976US3965986 Method for oil recovery improvement
06/29/1976US3965982 Hydraulic fracturing method for creating horizontal fractures
06/29/1976US3965981 Pre-packed well points
06/29/1976US3965736 Clamp-on transducer for well unit
06/29/1976US3965685 Method for lowering ground water
06/29/1976US3965658 Mowing machines
06/22/1976US3964792 Explosive fluid transmitted shock method for mining deeply buried coal
06/22/1976US3964553 Borehole tool orienting apparatus and systems
06/22/1976US3964547 Recovery of heavy hydrocarbons from underground formations
06/22/1976US3964546 Thermal recovery of viscous oil
06/22/1976US3964545 Processes for secondarily recovering oil
06/15/1976USRE28860 Curved offshore well conductors
06/15/1976US3963076 Method and apparatus for gravel packing well bores
06/15/1976US3963073 Purging apparatus
06/08/1976US3961824 Method and system for winning minerals
06/08/1976US3961490 Anchorage of floating structures
06/01/1976US3960736 Self-breaking viscous aqueous solutions and the use thereof in fracturing subterranean formations
06/01/1976US3960525 Oil-gas separator having defoaming structure
06/01/1976US3960366 Reverse acting lock open crossover valve
06/01/1976US3960214 Recovery of bitumen by steam injection
06/01/1976US3960213 Production of bitumen by steam injection
05/1976
05/25/1976US3959647 Gamma-ray measuring method for determining an interface between media
05/25/1976US3958636 Production of bitumen from a tar sand formation
05/25/1976US3958634 Welded wire well screen on perforated casing
05/18/1976US3957306 Explosive-aided oil shale cavity formation
05/18/1976US3957116 Fluid flow control in waterflood
05/18/1976US3957115 Method and apparatus for treating wells
05/18/1976US3957112 Offshore apparatus for carrying out operations in an offshore well
05/11/1976US3956145 Fluid for injection into a subterranean reservoir to displace hydrocarbons in the reservoir
05/11/1976US3955998 Aqueous gels for plugging fractures in subterranean formation and production of said aqueous gels