公开(公告)号：US20180298724A1

公开(公告)日：2018-10-18

申请号：US15485779

申请日：2017-04-12

Applicant: BAKER HUGHES INCORPORATED

Inventor： Steven R. Merrill ,  Yash Parekh ,  Steve Rosenblatt

IPC: E21B34/08 ,  E21B34/10 ,  E21B33/129 ,  E21B33/12

Abstract: A valve for a plug passage features opposed perforated magnetic discs that repel each other to stay apart allowing flow through the openings of the spaced discs. When a predetermined flow rate is exceeded, the magnetic repelling force is overcome and one disc moves toward the other to shut off flow as contact between the discs closed the openings between them. One way is to offset the openings and guide the moving disc axially while rotationally locking the moving disc. Another way is to spirally guide the moving disc so that openings initially aligned rotate out of alignment. One or more edge slots can be provided in each disc to sweep out debris that can settle between the discs that would otherwise impede the moving disc from contacting the stationary disc for passage closure.

公开(公告)号：US20170089175A1

公开(公告)日：2017-03-30

申请号：US14996956

申请日：2016-01-15

Applicant: BAKER HUGHES INCORPORATED

Inventor： James C. Doane ,  Ronnie D. Russell ,  Barbara A. Pratt ,  Erwin D. Hernaez ,  Juan C. Flores Perez ,  Elias Pena ,  Tristan R. Wise ,  Steven R. Merrill

IPC: E21B34/10 ,  E21B43/26

CPC classification number: E21B34/10 ,  E21B23/006 ,  E21B34/102 ,  E21B34/103 ,  E21B43/26 ,  E21B2034/002

Abstract: A valve assembly for a plug to close off a zone in the well for further treatment above the plug features a valve member initially pinned in an open position where flow up to a predetermined level can move through without dislodging the valve plug to move to its associated seat. If the perforating gun misfires a replacement gun can be run in with flow as the plug is still retained in the position for flow through the plug. On the other hand flow around the plug above a predetermined level will shear retainers for the plug and let the plug land on its seat closing flow in a downhole direction for treatment.