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)
12/1983
12/06/1983US4418751 Tertiary recovery of hydrocarbons
12/06/1983US4418651 System for heating and utilizing fluids
12/06/1983CA1158156A1 Method of mining an oil bearing bed with bottom water
12/06/1983CA1158155A1 Thermal recovery of viscous hydrocarbons using arrays of radially spaced horizontal wells
11/1983
11/30/1983EP0095397A1 System for preventing liquids from being driven to the flare stack tip
11/29/1983US4417989 Propping agent for fracturing fluids
11/29/1983US4417907 Degassing method and apparatus
11/29/1983US4417624 Method and apparatus for controlling the flow of fluids from an open well bore
11/29/1983US4417621 Method for recovery of oil by means of a gas drive combined with low amplitude seismic excitation
11/29/1983US4417620 Method of recovering oil using steam
11/23/1983EP0094898A2 An injection water viscosifier for enhanced oil recovery
11/22/1983US4416990 Enzymatic clarification process for improving the injectivity and filtrabhility of xanthan gums
11/22/1983US4416565 Method and column for collection and separation of oil, gas and water from blowing wells at the sea bed
11/22/1983US4416333 Corrosion inhibiting process for a remotely located deep corrosive gas well
11/22/1983US4416331 Bimetallic well screen for use in injection wells and method of making same
11/22/1983CA1157370A1 In situ coal gasification operations
11/16/1983EP0094217A1 Apparatus and method for transferring a Bingham solid through a long conduit
11/15/1983US4415717 Copolymers of acrylamide and an alkyl 2-hydroxy-3-/dimethyl-3-acrylamidopropylamino-/propyl ether; enhanced oil recovery; water solubility
11/15/1983US4415613 Method for making strengthened porous pipe and resulting product
11/15/1983US4415396 Resin-coated filaments
11/15/1983US4415206 Drill section and method of hydraulically mining mineral formations
11/15/1983US4415035 Method for fracturing a plurality of subterranean formations
11/15/1983US4415034 Electrode well completion
11/15/1983US4415033 Inverse viscosity grading
11/15/1983US4415032 Carbonated waterflooding for viscous oil recovery using a CO2 solubility promoter and demoter
11/15/1983US4415031 Use of recycled combustion gas during termination of an in-situ combustion oil recovery method
11/15/1983CA1156926A1 Technique for control of injection wells
11/08/1983US4414119 Injectivity of crude oil and petroleum sulfonate slugs by the addition of an alkylbenzene sulfonate
11/08/1983US4413958 Apparatus for installation in wells
11/08/1983US4413859 Mining of sulphur with foam barrier
11/08/1983US4413679 Wellbore cathodic protection
11/08/1983US4413678 Alarm means for use with apparatus protecting a device situated in a borehole
11/08/1983CA1156551A1 Well completion and workover method
11/08/1983CA1156550A1 Method for improving the effective permeability of formations
11/08/1983CA1156446A1 Demulsifier for inclusion in injected acidization systems for petroleum formation stimulation
11/08/1983CA1156445A1 Surfactant waterflooding oil recovery method
11/08/1983CA1156444A1 Aromatic compound with an aqueous hydrophilic polymer fluid
11/01/1983US4412926 Alkyl norbornyl ether sulfonates useful for solubilizing petroleum sulfonates in oil fluid brine solutions
11/01/1983US4412925 Clarified, stabilized culture containing a bactericide
11/01/1983US4412586 Methods of inhibiting the flow of water in subterranean formations
11/01/1983US4412585 Producing a coked zine electrode, and applying a voltage
11/01/1983US4412584 Downhole tool intake port assembly
11/01/1983CA1156141A1 Riser with articulated food for deepsea crude oil extraction
10/1983
10/26/1983EP0092476A2 Pressure activated well perforating technique
10/25/1983US4412124 Electrode unit for electrically heating underground hydrocarbon deposits
10/25/1983US4411873 In-line regeneration of polythionate poisoned ion exchange resins
10/25/1983US4411816 Native petroleum surfactants
10/25/1983US4411802 Enhanced oil recovery
10/25/1983US4411474 Solution mining of an inclined structure
10/25/1983US4411456 Apparatus, methods, and joints for connecting tubular members
10/25/1983US4411454 Underwater wellhead connector
10/25/1983US4411317 Flowline connector
10/25/1983US4411313 Pump
10/25/1983CA1155949A1 Electronic intermitter
10/25/1983CA1155689A1 Borehole charging method
10/19/1983EP0091842A1 System for preventing liquids from being driven to the flare stack tip
10/18/1983USRE31420 Powdered metal casing for perforating charge and its method of manufacture
10/18/1983US4410845 Backspin detection circuit for a submersible pump
10/18/1983US4410387 Ball sealers and method of preparation
10/18/1983US4410216 Method for recovering high viscosity oils
10/18/1983US4410051 System and apparatus for orienting a well casing perforating gun
10/18/1983US4410044 Method for orienting well casing and other tubular work objects and device therefor
10/18/1983US4410043 Injecting water-soluble salt to precipitate calcium on mineral surfaces, preserving carbon dioxide for oil displacement
10/18/1983US4410042 In-situ combustion method for recovery of heavy oil utilizing oxygen and carbon dioxide as initial oxidant
10/18/1983US4410041 Process for gas-lifting liquid from a well by injecting liquid into the well
10/18/1983US4410040 Corrosive environment tension packer
10/18/1983US4410038 Intermittent well controller
10/18/1983US4409927 Flameless nitrogen skid unit with transmission retarder
10/18/1983US4409825 Down hole steam quality measurement
10/12/1983EP0090979A2 Transparent fluid for conveying coal from a low level
10/11/1983US4409110 Enhanced oil displacement processes and compositions
10/11/1983US4408932 Subsea template levelling system and method
10/11/1983US4408665 In situ recovery of oil and gas from water-flooded oil shale formations
10/11/1983US4408664 Injecting water, carbon dioxide, citric acid, kand phosphoric acid
10/11/1983US4408663 Process for enlargement of rock fractures
10/11/1983CA1154975A1 Offshore platform having three decks
10/04/1983US4407368 Polyurethane ball sealers for well treatment fluid diversion
10/04/1983US4407367 Method for in situ recovery of heavy crude oils and tars by hydrocarbon vapor injection
10/04/1983US4407366 Method for gas capping of idle geothermal steam wells
10/04/1983US4407365 Method for preventing annular fluid flow
10/04/1983US4407362 Flow control apparatus for wells
10/04/1983US4407360 Borehole water pumping system with sandtrap
10/04/1983US4407183 Method and apparatus for hydraulically controlling subsea equipment
10/04/1983CA1154630A1 Binary electroexplosive device
10/04/1983CA1154558A1 Concentrated fluid composition
09/1983
09/29/1983WO1983003280A1 A system for avoiding the entrainement of liquids to a flare stack tip
09/27/1983US4406799 Process for secondary recovery
09/27/1983US4406798 Flow control
09/27/1983US4406597 Method for pumping a liquid from a well and apparatus for use therein
09/27/1983US4406499 Method of in situ bitumen recovery by percolation
09/27/1983US4406485 Tubular connector
09/27/1983US4406327 Chemically-aided gas cap drive
09/27/1983US4406326 Plastic well screen and method of forming same
09/27/1983CA1154378A1 Method for injecting a two phase fluid into a subterranean reservoir
09/27/1983CA1154377A1 Solution mining process
09/21/1983EP0089294A1 Method and installation for in situ lixiviation of ore
09/21/1983EP0089128A1 Process for displacing dissolved gas from water
09/21/1983EP0089085A1 A method for the underground gasification of coal or browncoal
09/21/1983EP0089051A2 Self-disintegrating formwork
09/21/1983EP0088823A1 In situ coal gasification
1 ... 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 ... 642