HYDRAULICALLY ACTUATED APPARATUS FOR GENERATING PRESSURE PULSES IN A DRILLING FLUID

HYDRAULICALLY ACTUATED APPARATUS FOR GENERATING PRESSURE PULSES IN A DRILLING FLUID

An apparatus for generating pressure pulses in a drilling fluid flowing through a bore of a downhole tubular. A housing containing a rotor is located in the bore. Drilling fluid flowing through the housing actuates rotation of the rotor relative to the housing, which in turn drives movement of an ac...

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1. Verfasser: GILLIS Sean
Format: Patent
Sprache:eng
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EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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creator GILLIS Sean
description An apparatus for generating pressure pulses in a drilling fluid flowing through a bore of a downhole tubular. A housing containing a rotor is located in the bore. Drilling fluid flowing through the housing actuates rotation of the rotor relative to the housing, which in turn drives movement of an actuator valve assembly to vary flow of drilling fluid between the bore and an actuator chamber defined by the actuator valve assembly and the housing. The resulting variation in drilling fluid pressure within the actuator chamber actuates a pulse valve assembly to vary flow of drilling fluid through the housing and into the bore. The varying drilling fluid pressure may be used to induce a percussive effect in a drill bit assembly coupled to the downhole tubular.
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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title HYDRAULICALLY ACTUATED APPARATUS FOR GENERATING PRESSURE PULSES IN A DRILLING FLUID
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