US2018355694A1PendingUtilityA1

Pressure differential plug and method

34
Assignee: MERRILL STEVEN ROBERTPriority: Jun 13, 2017Filed: Jun 13, 2017Published: Dec 13, 2018
Est. expiryJun 13, 2037(~10.9 yrs left)· nominal 20-yr term from priority
Inventors:Steven R. MerrillJames C. DoaneYash ParekhRonnie D. RussellAndre J. Porter
E21B 33/12E21B 43/26
34
PatentIndex Score
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Claims

Abstract

A pressure differential plug including a mandrel, a baffle within the mandrel, and one or more passageways in the baffle, the passageways configured and dimensioned to restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle. A borehole system including a borehole, a string in the borehole, the string including a plug as as in any prior embodiment. A method for causing an actuation via pressure including flowing fluid through a baffle of a plug as in any prior embodiment, increasing a flow rate through the baffle to raise pressure upstream of the baffle to an actuation level without seating a member on the baffle.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A pressure differential plug comprising:
 a mandrel;   a baffle within the mandrel; and   one or more passageways in the baffle, the passageways configured and dimensioned to restrict flow therethrough due to a valve coefficient thereof to both allow fluid flow therethrough and simultaneously allow the building of actuation pressure against the baffle without landing a member on the baffle.   
     
     
         2 . The plug as claimed in  claim 1  wherein the one or more passageways collectively present a valve coefficient of less than 4.47. 
     
     
         3 . The plug as claimed in  claim 1  wherein the plug further includes a packer and anchoring equipment. 
     
     
         4 . The plug as claimed in  claim 1  wherein the baffle is secured in the mandrel with threads. 
     
     
         5 . The plug as claimed in  claim 1  wherein the baffle is formed as a part of the mandrel. 
     
     
         6 . The plug as claimed in  claim 1  wherein the one or more passageways are cylindrical. 
     
     
         7 . The plug as claimed in  claim 1  wherein the one or more passageways are tortuous. 
     
     
         8 . A borehole system comprising:
 a borehole;   a string in the borehole, the string including a plug as claimed in  claim 1 .   
     
     
         9 . A method for causing an actuation via pressure comprising:
 flowing fluid through a baffle of a plug as claimed in  claim 1 ;   increasing a flow rate through the baffle to raise pressure upstream of the baffle to an actuation level without seating a member on the baffle.   
     
     
         10 . The method as claimed in  claim 9  further including flowing particles to bridge over the one or more passageways in the baffle. 
     
     
         11 . The method as claimed in  claim 9  wherein the actuation is fracturing. 
     
     
         12 . The method as claimed in  claim 9  wherein the actuation is of another tool. 
     
     
         13 . The method as claimed in  claim 9  further including returning fluid flow to a level below pressure increase and flowing fluid through the baffle. 
     
     
         14 . A method for making a pressure differential plug as claimed in  claim 1  wherein the baffle is subtractively machined in the mandrel. 
     
     
         15 . The method as claimed in  claim 14  wherein the baffle is additively manufactured with the mandrel.

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