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Patent Searching and Data


Title:
HYDRAULIC PIPE STRING VIBRATOR FOR REDUCING WELL BORE FRICTION
Document Type and Number:
WIPO Patent Application WO/2015/188155
Kind Code:
A8
Abstract:
A friction reduction apparatus (FRA) positioned onto a pipe string comprises a tubular housing, upper and lower mandrels having variously configured fluid flow passages and ports, a valve and a shifter. Fluid travelling through the apparatus causes the valve and shifter to reciprocate, repeatedly opening and closing flow passages. Each of these cycles creates a pulse in the fluid column creating vibrations that reduce friction in the pipe string. The FRA can be used in conjunction with a ball or dart activated tool positioned downhole from the FRA.

Inventors:
BAUDOIN TOBY SCOTT (US)
Application Number:
PCT/US2015/034573
Publication Date:
August 04, 2016
Filing Date:
June 05, 2015
Export Citation:
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Assignee:
KLX ENERGY SERVICES LLC (US)
International Classes:
E21B1/12; E21B4/14; E21B7/24; E21B28/00; E21B31/00; E21B31/107; E21B31/113
Attorney, Agent or Firm:
RUPP, Brian C. (191 N. Wacker Drive Suite 370, Chicago IL, US)
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