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Back pressure control devices used to control fluid pressure in a wellbore require various utilities for operation, such as an air supply. With the use of an air supply, the continued operation of one or more back pressure control devices may be achieved when supply of utilities for operation of the...

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Bibliographic Details
Main Author ROGER SUTER
Format Patent
LanguagePortuguese
Published 15.03.2016
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
ENGINEERING ELEMENTS AND UNITS
FIXED CONSTRUCTIONS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:Back pressure control devices used to control fluid pressure in a wellbore require various utilities for operation, such as an air supply. With the use of an air supply, the continued operation of one or more back pressure control devices may be achieved when supply of utilities for operation of the back pressure control devices are intentionally or unintentionally interrupted.
Bibliography:Application Number: BR2010PI08050