Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system

• US 8,657,017 B2
• Filed: 05/29/2012
• Issued: 02/25/2014
• Est. Priority Date: 08/18/2009
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Fripp, Michael Linley, DeJesus, Orlando, Gano, John C., Holderman, Luke, Dykstra, Jason D
• Primary Examiner(s): Bomar, Shane
• Assistant Examiner(s): FULLER, ROBERT EDWARD
• Application Number:
  US13/482,330
• Publication Number:
  US 20120234557A1
• Time in Patent Office: 637 Days
• Field of Search: 166/373, 137/804, 137/806, 137/808, 137/809, 137/812, 137/813, 137/814, 137/815, 137/819, 137/820
• US Class Current: 166/373
• CPC Class Codes: E21B 34/06 in wells
• CPC Class Codes: E21B 34/08 responsive to flow or pressure of the fluid obtained E21B34/10 takes precedence
• CPC Class Codes: E21B 43/08 Screens or liners expandable screens or liners E21B43/108
• CPC Class Codes: E21B 43/12 Methods or apparatus for controlling the flow of the obtained fluid to or in wells E21B43/25 takes precedence; valve arrangements E21B34/00
• CPC Class Codes: E21B 43/14 Obtaining from a multiple-zone well
• CPC Class Codes: E21B 43/32 Preventing gas- or water-coning phenomena, i.e. the formation of a conical column of gas or water around wells
• CPC Class Codes: F15C 1/16 Vortex devices, i.e. devices in which use is made of the pressure drop associated with vortex motion in a fluid vortex chambers F15D1/0015; vortex chambers as resistances F15C1/02; vortex chambers associated with amplifiers for improving the switching time by interaction F15C1/14
• CPC Class Codes: Y10T 137/2065 Responsive to condition external of system
• CPC Class Codes: Y10T 137/2076 Utilizing diverse fluids
• CPC Class Codes: Y10T 137/2087 Means to cause rotational flow of fluid [e.g., vortex generator]
• CPC Class Codes: Y10T 137/212 System comprising plural fluidic devices or stages

Abstract

Apparatus and methods for controlling the flow of fluid, such as formation fluid, through an oilfield tubular positioned in a wellbore extending through a subterranean formation. Fluid flow is autonomously controlled in response to change in a fluid flow characteristic, such as density or viscosity. In one embodiment, a fluid diverter is movable between an open and closed position in response to fluid density change and operable to restrict fluid flow through a valve assembly inlet. The diverter can be pivotable, rotatable or otherwise movable in response to the fluid density change. In one embodiment, the diverter is operable to control a fluid flow ratio through two valve inlets. The fluid flow ratio is used to operate a valve member to restrict fluid flow through the valve.

Claims

1. A method of autonomously directing flow in a subterranean wellbore, comprising:

receiving an initial flow of a fluid in a well device, and then separating the initial flow of fluid into a first flow and a separate second flow;

establishing a flow ratio between the first and second flows;

autonomously changing the flow ratio in response to changes in a characteristic of the fluid;

then

receiving the first and second flows of fluid, the first flow smaller than the second flow, the first flow flowing in a first direction that is different than a second direction in which the second flow is flowing;

combining the first flow and second flow into a combined flow;

directing the resulting combined flow away from the second direction and towards the first direction; and

generating a flow condition that autonomously increases the tendency of the combined flow to flow towards the first direction.

2. The method of claim 1, wherein generating a flow condition comprises directing the combined flow against a surface extending in the first direction that increases the tendency of the combined flow to flow along the surface in the first direction.

3. The method of claim 1, wherein the characteristic of the fluid comprises at least one of density of the fluid, viscosity of the fluid, or velocity of the fluid.

4. The method of claim 1, wherein the flow is bi-stable to flow stably towards the first direction or second direction, and wherein generating a flow condition comprises generating a flow condition that increases the tendency of the combined flow to flow stably towards the first direction.

5. The method of claim 1, wherein the well device comprises a proportional amplifier and generating a flow condition comprises dividing the flow between the first direction and the second direction proportionally based on the flow.