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earth drilling (689) 689
earth drilling, e.g. deep drilling (689) 689
fixed constructions (689) 689
mining (689) 689
obtaining oil, gas, water, soluble or meltable materials or aslurry of minerals from wells (689) 689
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rotary-piston, or oscillating-piston, positive-displacementmachines for liquids (4) 4
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alloys (3) 3
cocks (3) 3
cracking hydrocarbon oils (3) 3
data processing systems or methods, specially adapted foradministrative, commercial, financial, managerial, supervisoryor forecasting purposes (3) 3
details of fluid-pressure systems, not otherwise provided for (3) 3
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ferrous or non-ferrous alloys (3) 3
fluid-pressure actuators, e.g. servo-motors (3) 3
mineral waxes (3) 3
multiphase flow (3) 3
production of liquid hydrocarbon mixtures, e.g. by destructivehydrogenation, oligomerisation, polymerisation (3) 3
recovery of hydrocarbon oils from oil-shale, oil-sand, orgases (3) 3
refining mixtures mainly consisting of hydrocarbons (3) 3
reforming of naphtha (3) 3
systems acting by means of fluids in general (3) 3
systems or methods specially adapted for administrative,commercial, financial, managerial, supervisory or forecastingpurposes, not otherwise provided for (3) 3
taps (3) 3
treatment of alloys or non-ferrous metals (3) 3
valves (3) 3
accessories therefor (2) 2
apparatus or arrangements employing analogous techniques usingwaves other than optical waves (2) 2
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details of heat-exchange and heat-transfer apparatus, ofgeneral application (2) 2
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flow pattern (2) 2
flow stability (2) 2
fluid dynamics, i.e. methods or means for influencing the flowof gases or liquids (2) 2
gas-flow silencers or exhaust apparatus for internalcombustion engines (2) 2
gas-flow silencers or exhaust apparatus for machines orengines in general (2) 2
general tagging of cross-sectional technologies spanning over several sections of the ipc (2) 2
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geothermal collectors (2) 2
geothermal systems (2) 2
heat exchange in general (2) 2
heat-exchange apparatus, not provided for in another subclass,in which the heat-exchange media do not come into direct contact (2) 2
holography (2) 2
horizontal wells (2) 2
information and communication technology [ict] specially adaptedfor specific application fields (2) 2
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Flow Measurement and Instrumentation, ISSN 0955-5986, 08/2018, Volume 62, pp. 152 - 166
... under limited flow regime conditions, such as stratified flow and slug flow. This paper reports a dual-modality electrical tomography for visualisation of industrial-scale, horizontal gas-oil-water three-phase flows... 
Multi-dimensional data fusion | Electrical resistance tomography (ERT) | Gas-oil-water horizontal flow | Electrical capacitance tomography (ECT) | Three-phase flow visualisation | Dual-modality ERT-ECT systems | SYSTEM | INSTRUMENTS & INSTRUMENTATION | IMAGE FUSION | ENGINEERING, MECHANICAL
Journal Article
Shíyóu xuébào, ISSN 0253-2697, 01/2019, Volume 40, Issue 10, p. 1244
Due to the change of flow direction and the continuous radial inflow of wall fluid, the flow law of gas and water in horizontal wellbore is quite different from that in conventional vertical well... 
Water | Oil wells | Pressure distribution | Flow pattern | Flow rates | Water flow | Pressure | Optimization | Production management | Gas flow | Mist | Inflow | Stratified flow
Journal Article
Shíyóu xuébào, ISSN 0253-2697, 01/2017, Volume 38, Issue 6, p. 687
Aiming at the multi-stage fractured horizontal well in linear composite oil reservoirs, an unstable porous flow model was established based on comprehensively considering the actual characteristics... 
Gas fields | Dynamic response | Oil and gas fields | Horizontal wells | Oil reservoirs | Reservoirs | Skin | Water pollution | Functional analysis | Flow
Journal Article
05/2019
The invention relates to a drilling method of ion-type rare earth mines, in particular to a construction method of horizontal flow guide holes... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
Advanced materials research, ISSN 1022-6680, 11/2011, Volume 402, pp. 816 - 819
The experiments were conducted in a horizontal multiphase flow test loop (50mm inner diameter, 40m long... 
Horizontal pipe | Cross-correlation technology | Interfacial wave velocity | Annular flow | Gas-oil-water three-phase flow
Journal Article
01/2018
The utility model discloses a horizontal well duct flow simulation experiment device, including glass frame, experiment tube way, water oil separating counter, fixing system, simulated formation... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
09/2018
The utility model discloses a rotational flow ejection throttle sand washing nib for horizontal well, including the nib body that has the inner chamber, be provided with two at least spiral plates... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
05/2013
Provided is a horizontal flow blanking plug. The horizontal flow blanking plug comprises a body... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
06/2016
The utility model belongs to oil development borehole operation flow string, in particular to multi -functional flow string of horizontal well... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
09/2017
The invention relates to a flow-jetting bit feed tool for the drilling process of a horizontal well in the petroleum and nature gas industry... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
06/2017
The utility model discloses a PDC drill bit with horizontal cross flow water conservancy structure, including the bit body, be provided with the nozzle on the bit body, the crown of bit body... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
01/2019
The utility model discloses a mobile simulation experiment device of double -phase duct flow of horizontal well, including the box, one side fixedly connected with geologic modelling room of body... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
12/2014
The utility model relates to a horizontal well swirling flow sand washer. When horizontal well common sand washing construction is carried out, sand washing... 
EARTH DRILLING, e.g. DEEP DRILLING | FIXED CONSTRUCTIONS | EARTH DRILLING | OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS | MINING
Patent
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