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earth drilling (761864) 761864
earth drilling, e.g. deep drilling (761864) 761864
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obtaining oil, gas, water, soluble or meltable materials or aslurry of minerals from wells (761864) 761864
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positive displacement machines for liquids (17868) 17868
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ferrous or non-ferrous alloys (7174) 7174
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10/2018
The utility model relates to an oil gas exploitation technical field discloses an oil gas well structure. The utility model embodiment provides an oil gas 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
03/2019
The invention relates to the technical field of natural gas and oil extraction, and provides a plunger lift oil and gas well wellhead device and a plunger lift... 
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
03/2019
The invention relates to the technical field of oil and gas exploitation, and discloses an oil and gas well structure and an oil and gas well production... 
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 invention discloses an oil well gas separating device. The oil well gas separating device comprises a gas-liquid inlet short circuit, a gas-liquid... 
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
02/2019
The utility model provides an oil gas well high pressure water jet device, mainly by crossover sub, dabber, sealing washer, go up barrel, adjusting sleeve,... 
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
03/2019
The invention provides a shock wave generating device of oil-gas wells and an oil-gas well yield increasing method adopting shock waves, and belongs to the... 
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
03/2019
The invention relates to the technical field of natural gas and oil extraction, and discloses a blowout preventer and an oil and gas well. The blowout... 
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
08/2018
The present invention relates to a device for dispensing cartridges of solid chemical additives (100) for improving the production of oil and gas wells. Said... 
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
02/2019
The invention discloses a screening pipe cutting ball seat for oil-gas wells. The screening pipe cutting ball seat comprises an upper connecting head, a... 
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 invention discloses an oil pumping well casing gas controller which comprises a shell. The shell is a section of thick-wall pipe. A gas inlet is formed in... 
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 invention discloses an oil pumping well casing gas monitoring device which comprises a shell. The shell is a section of thick-wall pipe. A gas inlet is... 
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
10/2018
The utility model discloses an oil well technical field's an oil gas well liner hanger, including the hanger body, the both ends of hanger body are equipped... 
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 invention discloses an oil well casing gas recycling device. The oil well casing gas recycling device comprises a casing connecting pipeline; a separator... 
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
02/2019
The utility model provides an oil well water quality analysis sampler, includes: upper cover (1), upper sealing cushion (2), casing (3), filter core (4), lower... 
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 invention discloses a freshwater injection and brine discharge exchange device for water-soluble salt mining in drilling wells. The device comprises a... 
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
03/2019
The invention discloses an oil-gas well downhole multipoint pressure overflow monitoring method. The method includes that circulating fluid is pumped in... 
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
04/2019
The invention provides an oil-gas well slug flow combined type gas slug breaking device and method, and relates to the field of slug flow bubble breaking. A... 
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
05/2019
A method includes pumping fluid into a drill string extending through a riser into a well. A managed pressure drilling system is operated to maintain a... 
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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