×

Encapsulated breaker chemical

  • US 5,102,558 A
  • Filed: 01/04/1991
  • Issued: 04/07/1992
  • Est. Priority Date: 12/14/1989
  • Status: Expired due to Fees
First Claim
Patent Images

1. An encapsulated breaker chemical composition used in an oil or gas operation which comprises:

  • (a) a particulate breaker chemical; and

    (b) a coating substantially free of pinholes comprising a neutralized sulfonated elastomeric polymer having a thickness of at least about 1 micron deposited onto the surface of particles of said breaker chemical, wherein said neutralized sulfonated polymer encapsulates said breaker chemical, wherein said neutralized sulfonated polymer is essentially impermeable to said breaker chemical under conditions of use and said neutralized sulfonated polymer is non-reactive to said breaker chemical.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×