Invention Grant
- Patent Title: Hydraulic pipe string vibrator for reducing well bore friction
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Application No.: US14732494Application Date: 2015-06-05
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Publication No.: US09879495B2Publication Date: 2018-01-30
- Inventor: Toby Scott Baudoin
- Applicant: KLX ENERGY SERVICES LLC
- Applicant Address: US TX Houston
- Assignee: KLX Energy Services LLC
- Current Assignee: KLX Energy Services LLC
- Current Assignee Address: US TX Houston
- Agency: Drinker Biddle & Reath LLP
- Main IPC: E21B31/00
- IPC: E21B31/00 ; E21B28/00 ; E21B34/12 ; E21B34/00

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.
Public/Granted literature
- US20150354307A1 Hydraulic Pipe String Vibrator For Reducing Well Bore Friction Public/Granted day:2015-12-10
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