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)
04/1998
04/08/1998EP0834644A2 Treating subterranean formation to control particulate flowback
04/08/1998EP0834541A1 Method of decomposing gas hydrates
04/08/1998EP0834342A2 Downhole fluid separation system
04/08/1998EP0834000A1 Method for accelerating production
04/08/1998EP0833802A1 Slag cement and process using hydrophobically modified galactomannans as filtrate reductants
04/08/1998EP0833770A1 A rotating connector for operative connection between a buoy and a floating vessel for the production of hydrocarbons
04/08/1998EP0833769A1 A rotating connector with integrated lng course
04/08/1998CN2278081Y Multi-function oil suction well safety device
04/07/1998US5735350 Methods and systems for subterranean multilateral well drilling and completion
04/07/1998US5735346 Fluid level sensing for artificial lift control systems
04/07/1998US5735345 Shear-out landing adapter
04/07/1998CA2113976C Method of reducing the amount of formation water in oil recovered from an oil well
04/07/1998CA2111492C Slant wellbore tubing rotator with rotating tubing anchor catcher with rotating mandrel
04/02/1998WO1998013579A2 Oil separation and pumping systems
04/02/1998WO1998013578A1 Method of installing tubing into a lateral borehole
04/02/1998CA2266928A1 Method of installing tubing into a lateral borehole
04/01/1998EP0833037A1 Method for leaching out a cavity having a plurality of under-cavities in a thin layer of salt
04/01/1998EP0833036A2 Thermosettable composition, its use and a flexible deployable preform containing this composition
04/01/1998EP0832699A1 Process and installation for bio-dielectrically decontamination of contaminated soil
03/1998
03/31/1998US5734209 Linear electric motor and method of using and constructing same
03/31/1998US5733113 For use in a borehole
03/31/1998US5732776 Downhole production well control system and method
03/30/1998CA2216029A1 Process for hollowing out a cavity formed of a plurality of sub-cavities in a thin layer of salt
03/26/1998WO1998012416A1 Control of proppant flowback in hydraulically fractured wells
03/26/1998DE19742363A1 Bohrlochsieb mit Ausweichweg Well screen with avoidance
03/26/1998DE19741171A1 Sieve for removal of very fine particles from e.g. oil, gas and water boreholes
03/25/1998EP0830494A1 Method for downhole cyclone separation
03/25/1998CA2210087A1 Alternate-path well screen with protective shroud
03/24/1998US5731517 Measuring device used in a four-parameter measuring system and in a high temperature and high pressure condition
03/24/1998US5730871 Downhole fluid separation system
03/24/1998US5730551 Subsea connector system and method for coupling subsea conduits
03/24/1998US5730550 Method for placement of a permeable remediation zone in situ
03/24/1998US5730223 Sand control screen assembly having an adjustable flow rate and associated methods of completing a subterranean well
03/24/1998US5730220 Method of and device for production of hydrocarbons
03/24/1998US5730219 Production wells having permanent downhole formation evaluation sensors
03/18/1998EP0829616A1 Process for the consolidation of sand
03/18/1998EP0828921A2 Activating means for drilling apparatus
03/18/1998EP0828919A1 Device for the power supply of an immersed pump hanging from a pipe, particularly a flexible pipe
03/18/1998EP0828918A1 Connector assembly for an expandable slotted pipe
03/18/1998EP0737274A4 A "free" coil tubing downhole jet pump apparatus and method
03/18/1998EP0574584B1 Method for providing a user with a gas supply
03/18/1998CN2276559Y Perforation-high energy gas fracturing device
03/18/1998CN2276558Y Bowl-shaped sand filter
03/18/1998CN2276557Y Kerf sieve tube with curve, fold-line type crack
03/17/1998US5728302 Methods for the removal of contaminants from subterranean fluids
03/17/1998US5727640 For use in drilling of seep water oil/gas wells
03/12/1998WO1998010167A1 Apparatus and method for perforating and stimulating a subterranean formation
03/11/1998EP0828336A1 Cartridge rotor bearing with spring
03/11/1998CN2276075Y Thermal recovery steam injection pipe network anti-freezing device
03/11/1998CN2276074Y Integral sand-proof screen pipe
03/11/1998CN2276073Y Screen pipe for separating oil and sand
03/11/1998CN1175657A Oilfield injection water treatment method
03/11/1998CN1175656A Creepy metal wool sand filter pipe
03/10/1998US5725055 For use in a borehole in the earth
03/10/1998US5725054 Enhancement of residual oil recovery using a mixture of nitrogen or methane diluted with carbon dioxide in a single-well injection process
03/10/1998US5725053 Pump rotor placer
03/05/1998WO1998009083A1 Pump
03/05/1998WO1998009054A1 Cement reinforced inflatable seal for a junction of a multilateral
03/05/1998WO1998009052A1 Swivel
03/05/1998WO1998009051A1 Subsea module
03/05/1998WO1998009050A1 Subsea well
03/05/1998WO1998009049A1 Method and apparatus to seal a junction between a lateral and a main wellbore
03/05/1998WO1998009047A1 Coiled tubing entry guide
03/05/1998CA2233216A1 Coiled tubing entry guide
03/04/1998EP0826865A1 Unconsolidated formation stimulation and sand migration prevention methods
03/04/1998EP0825896A1 Separator systems for well production fluids
03/04/1998EP0696335B1 Acidising underground reservoirs
03/04/1998CN2275641Y Segmented sand retention device for oil pipe
03/03/1998US5723423 Solvent soaps and methods employing same
03/03/1998US5722796 Hinge-over subsea template production system
03/03/1998US5722792 Method of putting a saline cavity under gas
03/03/1998US5722490 Method of completing and hydraulic fracturing of a well
02/1998
02/26/1998WO1998007957A1 Method for casing a wellbore
02/26/1998WO1998007955A2 System for cutting materials in wellbores
02/26/1998CA2263240A1 Method for casing a wellbore
02/25/1998EP0825324A2 Tool connector
02/25/1998EP0824628A1 Connector assembly for an expandable slotted pipe
02/25/1998CN1174588A Method of creating casing in borehole
02/24/1998US5721538 System and method of communicating between a plurality of completed zones in one or more production wells
02/24/1998US5720356 Method and system for drilling underbalanced radial wells utilizing a dual string technique in a live well
02/24/1998US5720350 Method for recovering oil from a gravity drainage formation
02/19/1998WO1998006947A1 High-pressure centrifugal and submersible electrical pump for the extraction of liquids from a well
02/19/1998WO1998006928A1 Variable orifice gas lift valve for high flow rates with detachable power source and method of using
02/19/1998WO1998006925A2 Dual annulus production tool
02/19/1998WO1998006535A1 Method for making slots in metal pipe
02/18/1998CN1173581A Pressure index deciding method for block integral profile control for water packing-off
02/17/1998US5718288 Method of cementing deformable casing inside a borehole or a conduit
02/16/1998CA2212696A1 Latch and release tool connector and method
02/12/1998WO1998005848A2 Method and apparatus for the downhole metering and control of fluids produced from wells
02/12/1998WO1998005847A1 Particle control screen assembly
02/12/1998WO1998005845A1 Method for forming a casing window
02/12/1998DE19626589C1 Sinking boreholes in soft ground
02/12/1998CA2262673A1 Particle control screen assembly
02/12/1998CA2232941A1 Method for forming a casing window
02/12/1998CA2204956A1 Pump rotor placer
02/11/1998EP0823538A2 Method of stimulating a subterranean well
02/11/1998EP0823534A1 Apparatus for establishing branch wells from a parent well
02/11/1998CN2274254Y Petroleum-well reducer
02/10/1998US5716196 Pumping method and device with sequential jets
02/10/1998US5716164 Process for the local treatment of soil in particular for examination and cleaning of contaminated soil
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