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IPC-Stelle: E21B 43/00 Hauptgruppe [Version 2006.01, Sprache EN - English]

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DEKLA-Gruppen

Symbol		Titel
A Hierarchieinformationen		SECTION A — HUMAN NECESSITIES
B Hierarchieinformationen		SECTION B — PERFORMING OPERATIONS; TRANSPORTING
C Hierarchieinformationen		SECTION C — CHEMISTRY; METALLURGY
D Hierarchieinformationen		SECTION D — TEXTILES; PAPER
E Hierarchieinformationen		SECTION E — FIXED CONSTRUCTIONS
E01 Hierarchieinformationen		BUILDING
E01 Hierarchieinformationen		CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES (of tunnels E21D)
E02 Hierarchieinformationen		HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
E03 Hierarchieinformationen		WATER SUPPLY; SEWERAGE
E04 Hierarchieinformationen		BUILDING (layered materials, layered products in general B32B)
E05 Hierarchieinformationen		LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
E06 Hierarchieinformationen		DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS, IN GENERAL; LADDERS
E21 Hierarchieinformationen		EARTH OR ROCK DRILLING; MINING
E21 Hierarchieinformationen		EARTH OR ROCK DRILLING; MINING
E21B Hierarchieinformationen		EARTH OR ROCK DRILLING (mining, quarrying E21C; making shafts, driving galleries or tunnels E21D); OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS [5]
E21B 1/00		Methods or apparatus for drilling
E21B 1/00 Hierarchieinformationen		Percussion drilling (drives used in the borehole E21B 4/00) [3]
E21B 3/00 Hierarchieinformationen		Rotary drilling (drives used in the borehole E21B 4/00; rotary drilling machines in general B23B) [3]
E21B 4/00 Hierarchieinformationen		Drives used in the borehole [3]
E21B 6/00 Hierarchieinformationen		Drives for drilling with combined rotary and percussive action (drives used in the borehole E21B 4/00; portable percussive machines with superimposed rotation B25D 16/00) [3]
E21B 7/00 Hierarchieinformationen		Special methods or apparatus for drilling (supports for the drilling machine, e.g. derricks or masts, E21B 15/00) [1, 7]
E21B 10/00		Drilling tools
E21B 10/00 Hierarchieinformationen		Drill bits (specially adapted for deflecting the direction of boring E21B 7/08; with means for collecting substances E21B 27/00) [3, 2006.01]
E21B 11/00 Hierarchieinformationen		Other drilling tools
E21B 12/00 Hierarchieinformationen		Accessories for drilling tools [3]
E21B 15/00		Other equipment or details for drilling; Well equipment or well maintenance
E21B 15/00 Hierarchieinformationen		Supports for the drilling machine, e.g. derricks or masts [1, 7]
E21B 17/00 Hierarchieinformationen		Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (rod couplings in general F16D; tubes or tube couplings in general F16L)
E21B 19/00 Hierarchieinformationen		Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables (surface drives E21B 1/02, E21B 3/02)
E21B 21/00 Hierarchieinformationen		Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (freeing objects stuck in boreholes by flushing E21B 31/03; well drilling compositions C09K 8/02) [2, 7]
E21B 23/00 Hierarchieinformationen		Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens, or liners E21B 43/10)
E21B 25/00 Hierarchieinformationen		Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors (core bits E21B 10/02; using explosives or projectiles in boreholes E21B 49/04; side-wall sampling or coring E21B 49/06)
E21B 27/00 Hierarchieinformationen		Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits [6, 2006.01]
E21B 28/00 Hierarchieinformationen		Vibration generating arrangements for boreholes or wells, e.g. for stimulating production (for drilling E21B 7/24; for transmitting measuring-signals E21B 47/14; for geophysical measurements G01V 1/02) [6]
E21B 29/00 Hierarchieinformationen		Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows (perforators E21B 43/11); Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
E21B 31/00 Hierarchieinformationen		Fishing for or freeing objects in boreholes or wells (provisions on well heads for introducing or removing objects E21B 33/068; locating or determining the position of objects in boreholes or wells E21B 47/09)
E21B 33/00 Hierarchieinformationen		Sealing or packing boreholes or wells
E21B 34/00 Hierarchieinformationen		Valve arrangements for boreholes or wells (in drilling fluid circulation systems E21B 21/10; blow-out preventers E21B 33/06; oil flow regulating apparatus E21B 43/12; valves in general F16K) [3]
E21B 35/00 Hierarchieinformationen		Methods or apparatus for preventing or extinguishing fires (cutting or deforming pipes to control fluid flow E21B 29/08; controlling flow of fluid to or in wells E21B 43/12; fire fighting in general A62C, A62D)
E21B 36/00 Hierarchieinformationen		Heating, cooling, or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones (drilling by use of heat E21B 7/14; secondary recovery methods using heat E21B 43/24) [3]
E21B 37/00 Hierarchieinformationen		Methods or apparatus for cleaning boreholes or wells (E21B 21/00 takes precedence; cleaning pipes in general B08B 9/02)
E21B 40/00 Hierarchieinformationen		Tubing catchers, automatically arresting the fall of oil-well tubing
E21B 41/00 Hierarchieinformationen		Equipment or details not covered by groups E21B 15/00-E21B 40/00
E21B 43/00		Obtaining fluids from wells [3]
E21B 43/00 Hierarchieinformationen		Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (applicable only to water E03B; obtaining oil-bearing deposits or soluble or meltable materials by mining techniques E21C 41/00; pumps F04)
E21B 43/01 Hierarchieinformationen		. specially adapted for obtaining from underwater installations (underwater well heads E21B 33/035)
E21B 43/013 Hierarchieinformationen		. . Connecting a production flow line to an underwater well head [3]
E21B 43/017 Hierarchieinformationen		. . Production satellite stations, i.e. underwater installations comprising a plurality of satellite well heads connected to a central station (underwater separating arrangements E21B 43/36) [3]
E21B 43/02 Hierarchieinformationen		. Subsoil filtering (E21B 43/11 takes precedence; chemical compositions for consolidating loose sand or the like around wells C09K 8/56) [1, 2006.01]
E21B 43/04 Hierarchieinformationen		. . Gravelling of wells
E21B 43/08 Hierarchieinformationen		. . Screens or liners
E21B 43/10 Hierarchieinformationen		. . Setting of casings, screens or liners in wells (driving or forcing casings into boreholes, simultaneously drilling and casing boreholes E21B 7/20; setting of tools, packers or the like E21B 23/00; suspending casings in well heads E21B 33/04)
E21B 43/11 Hierarchieinformationen		. Perforators; Permeators
E21B 43/112 Hierarchieinformationen		. . Perforators with extendable perforating members, e.g. actuated by fluid means
E21B 43/114 Hierarchieinformationen		. . Perforators using direct fluid action, e.g. abrasive jets
E21B 43/116 Hierarchieinformationen		. . Gun or shaped-charge perforators
E21B 43/117 Hierarchieinformationen		. . . Shaped-charge perforators (E21B 43/118 takes precedence)
E21B 43/118 Hierarchieinformationen		. . . characterised by lowering in vertical position and subsequent tilting to operating position
E21B 43/1185 Hierarchieinformationen		. . . Ignition systems [3]
E21B 43/119 Hierarchieinformationen		. . Details, e.g. for locating perforating place or direction
E21B 43/12 Hierarchieinformationen		. Methods or apparatus for controlling the flow of the obtained fluid to or in wells (E21B 43/25 takes precedence; valve arrangements E21B 34/00)
E21B 43/14 Hierarchieinformationen		. Obtaining from a multiple-zone well
E21B 43/16 Hierarchieinformationen		. Enhanced recovery methods for obtaining hydrocarbons (fracturing E21B 43/26; obtaining slurry E21B 43/29; reclamation of contaminated soil in situB09C)
E21B 43/17 Hierarchieinformationen		. . Interconnecting two or more wells by fracturing or otherwise attacking the formation (E21B 43/247 takes precedence) [3]
E21B 43/18 Hierarchieinformationen		. . Repressuring or vacuum methods
E21B 43/20 Hierarchieinformationen		. . Displacing by water
E21B 43/22 Hierarchieinformationen		. . Use of chemicals or bacterial activity (E21B 43/27 takes precedence; chemical or bacterial compositions therefor C09K 8/58; chemical features in extracting oils from oil sands or shales C10G) [1, 2006.01]
E21B 43/24 Hierarchieinformationen		. . using heat, e.g. steam injection (heating, cooling or insulating wells E21B 36/00)
E21B 43/241 Hierarchieinformationen		. . . combined with solution mining of non-hydrocarbon minerals, e.g. solvent pyrolysis of oil shale [5]
E21B 43/243 Hierarchieinformationen		. . . Combustion in situ [3]
E21B 43/247 Hierarchieinformationen		. . . . in association with fracturing processes [3]
E21B 43/248 Hierarchieinformationen		. . . . . using explosives [5]
E21B 43/25 Hierarchieinformationen		. Methods for stimulating production (dump bailers E21B 27/02; vibration generating arrangements E21B 28/00; chemical compositions therefor C09K 8/60) [1, 2006.01]
E21B 43/26 Hierarchieinformationen		. . by forming crevices or fractures
E21B 43/263 Hierarchieinformationen		. . . using explosives [3]
E21B 43/267 Hierarchieinformationen		. . . reinforcing fractures by propping [3]
E21B 43/27 Hierarchieinformationen		. . . by use of eroding chemicals, e.g. acids
E21B 43/28 Hierarchieinformationen		. Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent (E21B 43/241 takes precedence) [5]
E21B 43/285 Hierarchieinformationen		. Melting minerals, e.g. sulfur (E21B 43/24 takes precedence; heating, cooling or insulating arrangements for wells E21B 36/00) [5]
E21B 43/29 Hierarchieinformationen		. Obtaining a slurry of minerals, e.g. by using nozzles [5]
E21B 43/295 Hierarchieinformationen		. Gasification of minerals, e.g. for producing mixtures of combustible gases (E21B 43/243 takes precedence) [5]
E21B 43/30 Hierarchieinformationen		. Specific pattern of wells, e.g. optimizing the spacing of wells (production satellite stations E21B 43/017) [3]
E21B 43/32 Hierarchieinformationen		. Preventing gas- or water-coning phenomena, i.e. the formation of a conical column of gas or water around wells [3]
E21B 43/34 Hierarchieinformationen		. Arrangements for separating materials produced by the well (separating apparatus per se, see the relevant subclasses) [3]
E21B 43/36 Hierarchieinformationen		. . Underwater separating arrangements (E21B 43/38 takes precedence) [3]
E21B 43/38 Hierarchieinformationen		. . in the well [3]
E21B 43/40 Hierarchieinformationen		. . Separation associated with re-injection of separated materials [3]
E21B 44/00		Automatic control; Surveying or testing [3]
E21B 44/00 Hierarchieinformationen		Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems (for non-automatic drilling control, see the operation controlled; automatic feeding from rack and connecting of drilling pipes E21B 19/20; controlling pressure or flow of drilling fluid E21B 21/08); Systems specially adapted for monitoring a plurality of drilling variables or conditions (means for transmitting measuring-signals from the well to the surface E21B 47/12) [3]
E21B 45/00		Surveying or testing
E21B 45/00 Hierarchieinformationen		Measuring the drilling time or rate of penetration
E21B 47/00 Hierarchieinformationen		Survey of boreholes or wells (monitoring pressure or flow of drilling fluid E21B 21/08; geophysical logging G01V)
E21B 49/00 Hierarchieinformationen		Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells (sampling in general G01N 1/00)
E21C Hierarchieinformationen		MINING OR QUARRYING
E21D Hierarchieinformationen		SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K 17/00; cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F) [2, 6]
E21F Hierarchieinformationen		SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS [2]
E99 Hierarchieinformationen		SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
F Hierarchieinformationen		SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
G Hierarchieinformationen		SECTION G — PHYSICS
H Hierarchieinformationen		SECTION H — ELECTRICITY

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