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Variably Opened

Variably Opened patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

Related Categories:

Wells


Valves, Closures Or Changeable Restrictors > Fluid Operated > Variably Opened



Downhole pressure compensating device
01/16/14 - 20140014352 - The present invention relates to a downhole pressure compensating device for use in combination with a downhole tool, comprising a housing with a chamber and an internal hollow section, a first piston dividing the chamber into a first section and a second section, the first section being in fluid communication...

Systems and techniques to actuate isolation valves
09/19/13 - 20130240212 - A tool that is usable in a well and may include an operator, a switch, a resilient device and an indexer. The switch may be configured to selectively communicate a first force to the operator, thereby actuating the tool. The resilient device may exert a second force. The indexer may...

Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well
03/07/13 - 20130056217 - A system for variably resisting flow of a fluid composition can include a flow passage and a set of one or more branch passages which intersect the flow passage, whereby a proportion of the composition diverted from the passage to the set of branch passages varies based on at least...

Wellhead valve system for adjusting the flow with integrated multiphase flow rate measuring ability
10/06/11 - 20110240298 - The present invention refers to a wellhead valve system for adjusting the flow, for example, of hydrocarbon, comprising a hydraulic control valve (10) for opening the wellhead made up of a valve body (11) provided with a pipe (14,15) for the passage of a flow (F) of fluids, having an...

Method and apparatus for single-trip wellbore treatment
09/01/11 - 20110209873 - The apparatus consists of a tubular housing carried into the well on a workstring. A series of spaced isolation modules is provided for each zone and carried into the well on a tubular conduit. The first, or most downstream module includes first and second sealing mechanisms to isolate the first...

System for pulse-injecting fluid into a borehole
03/03/11 - 20110048724 - Applying pulses to liquid being injected into wells makes the ground/liquid formation more homogenous, and more penetrative. A system for automatically creating the pulses is described, in which a piston is acted upon by the pressure differential (PDAF) between the supplied accumulator pressure and the formation pressure. The changing levels...

Pipeless sagd system and method
11/19/09 - 20090283272 - A SAGD system including a string defining an axial flow channel and an annular flow pathway, a fluid access structure between the axial flow channel and the annular flow pathway, and a valve disposed within the annular flow pathway. The valve being selectively closable to selectively inhibit annular flow in...

Water sensitive adaptive inflow control using cavitations to actuate a valve
08/06/09 - 20090194289 - An apparatus for controlling fluid flow between a wellbore tubular and a wellbore annulus includes a passage between a bore of the wellbore tubular and the wellbore annulus. The passage causes cavitations in a flowing fluid made up of mostly water. The cavitations activate a flow control device that controls...

Rotary control valve and associated actuator control system
05/28/09 - 20090133879 - A rotary control valve and associated actuator control system. An actuator control system comprises a rotary control valve including a generally planar face seal, and an actuator operatively connected to the rotary control valve. Another actuator control system comprises a control valve including multiple faces having multiple ports formed therein....