Polymer flow control device
First Claim
1. A water injection flow control device comprising:
- a stack of discs or cone-like plates, the stack of discs or cone-like plates forming spiral shaped flow conduits between the stack of discs or cone-like plates, the spiral shaped flow conduits comprising at least one revolution, the spiral shaped flow conduits being turned about a central point or axis and departing or approaching the central point or axis for each revolution;
an inlet operatively coupled to either inner or outer ends of the spiral shaped flow conduits and an outlet operatively coupled to the other of the inner or outer ends of the spiral shaped flow conduits;
a control member configured to control a pressure drop across the inlet and the outlet;
wherein at least one of the spiral shaped flow conduits comprises a series of alternating cross-sectional areas, the alternating cross-sectional areas comprising alternating large and small cross-sectional areas; and
wherein the spiral shaped flow conduits have a fluid conduit length of at least 0.2 meters.
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Accused Products
Abstract
A water injection flow control device includes a stack of discs or cone-like plates that form spiral-shaped flow conduits. The spiral-shaped flow conduits form at least one revolution about a central point or axis and depart or approach the central point or axis for each revolution. At least some of the spiral-shaped flow conduits have sections in series with alternating cross sectional area for flow and at least some have sections with a serpentine-type shape for flow along the spiral-shaped flow conduits. The spiral-shaped flow conduits have an inlet coupled to an inner or outer end of the spiral shaped flow conduits, an outlet coupled to the other end of the spiral-shaped conduits, and a control member.
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Citations
17 Claims
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1. A water injection flow control device comprising:
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a stack of discs or cone-like plates, the stack of discs or cone-like plates forming spiral shaped flow conduits between the stack of discs or cone-like plates, the spiral shaped flow conduits comprising at least one revolution, the spiral shaped flow conduits being turned about a central point or axis and departing or approaching the central point or axis for each revolution; an inlet operatively coupled to either inner or outer ends of the spiral shaped flow conduits and an outlet operatively coupled to the other of the inner or outer ends of the spiral shaped flow conduits; a control member configured to control a pressure drop across the inlet and the outlet; wherein at least one of the spiral shaped flow conduits comprises a series of alternating cross-sectional areas, the alternating cross-sectional areas comprising alternating large and small cross-sectional areas; and wherein the spiral shaped flow conduits have a fluid conduit length of at least 0.2 meters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A water injection flow control device comprising:
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a stack of discs or cone-like plates, the stack of discs or cone-like plates forming spiral shaped flow conduits between the stack of discs or cone-like plates, the spiral shaped flow conduits comprising at least one revolution, the spiral shaped flow conduits being turned about a central point or axis and departing or approaching the central point or axis for each revolution; an inlet operatively coupled to either inner or outer ends of the spiral shaped flow conduits and an outlet operatively coupled to the other of the inner or outer ends of the spiral shaped flow conduits; a control member configured to control a pressure drop across the inlet and the outlet; wherein at least one of the spiral shaped flow conduits comprises a serpentine-type shape; wherein the serpentine-type shape can comprise square waves or sinusoidal waves or combinations of square and sinusoidal waves, wherein each wave of the square or sinusoidal waves comprises a periodicity P, and a wave amplitude A, wherein a distance between a top and a bottom of repeated waves is between 4 and 40 d, and wherein d is a dimension in the spiral shaped flow conduits that is transverse to a central flow line along the spiral shaped flow conduits; and wherein the spiral shaped flow conduits have a fluid conduit length of at least 0.2 meters. - View Dependent Claims (14)
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15. A water injection system comprising:
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a water injection pump and a polymer mixing station operatively coupled to a water source, for mixing polymer into water and pumping the mixture; two or more injection wells operatively connected, one or more injection wells having a lower pressure than a highest pressure injection well, a water injection flow control device operatively arranged for at least each lower pressure well, for adjusting pressure, the water injection flow control device comprising; a stack of discs or cone-like plates, the stack of discs or cone-like plates forming spiral shaped flow conduits between the stack of discs or cone-like plates, the spiral shaped flow conduits comprising at least one revolution, the spiral shaped flow conduit being turned about a central point or axis and departing or approaching the central point or axis for each revolution; an inlet operatively coupled to either inner or outer ends of the spiral shaped flow conduits and an outlet operatively coupled to the other of the inner or outer ends of the spiral shaped flow conduits; a control member configured to control a pressure drop across the inlet and the outlet; wherein at least one of the spiral shaped flow conduits comprises a series of alternating cross-sectional areas, the alternating cross-sectional areas comprising alternating large and small cross-sectional areas; and wherein the spiral shaped flow conduits have a fluid conduit length of at least 0.2 meters.
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16. A water injection system comprising:
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a water injection pump and a polymer mixing station operatively coupled to a water source, for mixing polymer into water and pumping the mixture; two or more injection wells operatively connected, one or more injection wells having a lower pressure than a highest pressure injection well; a water injection flow control device operatively arranged for at least each lower pressure well, for adjusting pressure, the water injection flow control device comprising; a stack of discs or cone-like plates, the stack of discs or cone-like plates forming spiral shaped flow conduits between the stack of discs or cone-like plates, the spiral shaped flow conduits comprising at least one revolution, the spiral shaped flow conduit being turned about a central point or axis and departing or approaching the central point or axis for each revolution; an inlet operatively coupled to either inner or outer ends of the spiral shaped flow conduits and an outlet operatively coupled to the other of the inner or outer ends of the spiral shaped flow conduits; a control member configured to control a pressure drop across the inlet and the outlet; wherein at least one of the spiral shaped flow conduits comprises a serpentine-type shape; wherein the serpentine-type shape can comprise square waves or sinusoidal waves or combinations of square and sinusoidal waves, wherein each wave of the square or sinusoidal waves comprises a periodicity P, and a wave amplitude A, wherein a distance between a top and a bottom of repeated waves is between 4 and 40 d, and wherein d is a dimension in the spiral shaped flow conduits that is transverse to a central flow line along the spiral shaped flow conduits; and wherein the spiral shaped flow conduits have a fluid conduit length of at least 0.2 meters. - View Dependent Claims (17)
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Specification