Title:
BALL DROP MODULE
Document Type and Number:
WIPO Patent Application WO/2011/091140
Kind Code:
A3
Abstract:
A pressurizing device includes a main housing having a central bore therethrough and a ball drop module removably disposed within the main housing, the ball drop module including a ball seat hingedly attached within the ball drop module and configured to receive a dropped ball, wherein the ball seat is configured to rotate about a hinge from a closed position to an open position when a pressure above the ball seat exceeds a preset limit.
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Inventors:
GILL WILLIAM C (US)
HARRIS MICHAEL J (US)
ABRAHAM AJU (US)
COSTO ROBERT JAMES (US)
HARRIS MICHAEL J (US)
ABRAHAM AJU (US)
COSTO ROBERT JAMES (US)
Application Number:
PCT/US2011/021871
Publication Date:
November 03, 2011
Filing Date:
January 20, 2011
Export Citation:
Assignee:
SMITH INTERNATIONAL (US)
GILL WILLIAM C (US)
HARRIS MICHAEL J (US)
ABRAHAM AJU (US)
COSTO ROBERT JAMES (US)
GILL WILLIAM C (US)
HARRIS MICHAEL J (US)
ABRAHAM AJU (US)
COSTO ROBERT JAMES (US)
International Classes:
E21B34/14; E21B21/10
Foreign References:
US7434625B2 | 2008-10-14 | |||
US6920930B2 | 2005-07-26 | |||
US5890538A | 1999-04-06 | |||
US4089371A | 1978-05-16 |
Attorney, Agent or Firm:
BERGMAN, Jeffrey, S. et al. (909 Fannin Street Suite 350, Houston TX, US)
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