(19)
(11) EP 2 282 002 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.05.2011 Bulletin 2011/18

(43) Date of publication A2:
09.02.2011 Bulletin 2011/06

(21) Application number: 10185217.6

(22) Date of filing: 14.02.2001
(51) International Patent Classification (IPC): 
E21B 33/124(2006.01)
E21B 43/119(2006.01)
E21B 43/11(2006.01)
E21B 43/25(2006.01)
 E21B 33/129(2006.01)
E21B 43/267(2006.01)
E21B 23/14(2006.01)
(84) Designated Contracting States:
DE DK GB IT NL

(30) Priority: 15.02.2000 US 182687 P
30.10.2000 US 244258 P

(62) Application number of the earlier application in accordance with Art. 76 EPC:
01909197.4 / 1264075

(71) Applicant: Exxonmobil Upstream Research Company Corp-URC-SW-3
Houston, TX 77252-2189 (US)

(72) Inventors:
  • Tolman, Randy
    Springn, TX 77386 (US)
  • Carlson, Lawrence
    Cypress, TX 77429 (US)
  • Kinison, David
    Kingwood, TX 77339 (US)
  • Nygaard, Kris
    Houston, TX 77025 (US)
  • Goss, Glenn
    Kingwood, TX 77345 (US)
  • Sorem, William
    Katy, TX 77450 (US)
  • Shafer, Lee
    Big Piney, WY 83113 (US)

(74) Representative: Mareschal, Anne et al
ExxonMobil Chemical Europe Inc. IP Law Shared Services Hermeslaan 2
1831 Machelen
1831 Machelen (BE)

   


(54) Method and apparatus for stimulation of multiple formation intervals


(57) The invention provides an apparatus and method for perforating and treating multiple intervals of one or more subterranean formations (86) intersected by a wellbore by deploying a bottom-hole assembly having a perforating device (134) and at least one sealing mechanism (120) within said wellbore. The perforating device (134) is used to perforate the first interval to be treated. Then the bottom-hole assembly is positioned within the wellbore such that the sealing mechanism (120), when actuated, establishes a hydraulic seal in the wellbore to positively force fluid to enter the perforations (230, 231) corresponding to the first interval to be treated. A treating fluid is then pumped down the wellbore and into the perforations (230, 231) created in the perforated interval. The sealing mechanism (120) is released, and the steps are then repeated for as many intervals as desired, without removing the bottom hole assembly from said wellbore.







Search report