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Flow restriction device for use in producing wells

  • US 5,896,928 A
  • Filed: 07/01/1996
  • Issued: 04/27/1999
  • Est. Priority Date: 07/01/1996
  • Status: Expired due to Term
First Claim
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1. A fluid flow restricting device for use in a wellbore that is producing a fluid from a zone of interest, comprising:

  • (a) an elongated body for placement within the wellbore adjacent to the zone of interest;

    (b) a fluid communication member in the body for enabling the fluid to flow from the zone of interest into a first section inside the body;

    (c) a flow control device in the body for receiving the fluid from the first section, said flow control device having(i) a tortuous path for receiving the fluid from the first section and passing the received fluid to a second section,(ii) a slidable member associated with the tortuous path and adapted to be positioned between a first position and a second position for controlling the fluid flow rate through the tortuous path; and

    (d) an electrically-operated device within the body for positioning the slidable member at a predetermined position between the first and second positions.

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