(19)
(11) EP 2 838 973 A1

(12)

(43) Date of publication:
25.02.2015 Bulletin 2015/09

(21) Application number: 13778228.0

(22) Date of filing: 15.03.2013
(51) International Patent Classification (IPC): 
C09K 8/80(2006.01)
(86) International application number:
PCT/US2013/032435
(87) International publication number:
WO 2013/158308 (24.10.2013 Gazette 2013/43)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 19.04.2012 US 201261635612 P
21.06.2012 US 201261662681 P
13.11.2012 US 201261725751 P
14.02.2013 US 201361764792 P

(71) Applicant: Self-suspending Proppant LLC
Cambridge, MA 02138 (US)

(72) Inventors:
  • MAHONEY, Robert, P.
    Newbury, MA 01922 (US)
  • SOANE, David, S.
    Chestnut Hill, MA 02467 (GB)
  • HERRING, Marie, K.
    Cambridge, MA 02139 (US)
  • KINCAID, Kevin, P.
    Brighton, MA 02135 (US)
  • PORTILLA, Rosa, Casado
    Peabody, MA 01960 (US)
  • WUTHRICH, Philip
    Lowell, MA 01852 (US)

(74) Representative: Barton, Matthew Thomas 
Forresters Skygarden Erika-Mann-Strasse 11
80636 München
80636 München (DE)

   


(54) SELF-SUSPENDING PROPPANTS FOR HYDRAULIC FRACTURING