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Ball sealer

  • US 4,505,334 A
  • Filed: 09/06/1983
  • Issued: 03/19/1985
  • Est. Priority Date: 09/06/1983
  • Status: Expired due to Fees
First Claim
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1. A ball sealer for seating against high flow perforations in oil well casing during fluid injection, comprising:

  • a spherical core which forms a suitable base on which to wrap a filament; and

    a layer of thermosetting filament wrapping outside the core which is sufficiently thick to give the ball sealer the strength necessary to withstand the pressure differential across a perforation in oil well casing during fluid injection.

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  • 4 Assignments
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