Plug with a resettable closure member

Patent metadata

Field	Value
Publication number	US-11199073-B2
Application number	US-202016778859-A
Country	US
Kind code	B2
Filing date	Jan 31, 2020
Priority date	Jan 31, 2020
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

A plug with a resettable closure member including a body defining a flow bore and a closure member seat, a closure assembly connected to the body, the assembly includes a closure member and a magnetic catch disposed to hold the closure member in an open position, the magnetic catch being configured to release the closure member upon a selected hydrodynamic load upon the closure member.

First claim

What is claimed is:

1. A frac plug settable in a casing with a resettable closure member comprising:
a body defining a flow bore smaller than the casing in which the frac plug is settable to increase flow velocity in the flow bore and a closure member seat;
a closure assembly connected to the body, the assembly including:
a fracturing closure member, the member being disposed within the smaller flow bore and pivotable to a closed position in the same direction as fluid flowing into a wellbore through the flow bore, when in use; and
a magnetic catch disposed to hold the closure member in an open position, the magnetic catch being configured to release the closure member upon a selected hydrodynamic load including load created by the increased fluid velocity acting directly upon the closure member.

2. The plug as claimed in claim 1 further including a hole in the body.

3. The plug as claimed in claim 1 further including a slip and seal operatively connected to the body.

4. The plug as claimed in claim 1 wherein the closure assembly further includes a frame and a magnet disposed on the frame or on the closure member or on both.

5. The plug as claimed in claim 1 wherein the closure member is a flapper.

6. A method for fracturing a wellbore system comprising:
flowing a fluid through a plug having a body defining a flow bore and a closure member seat,
a closure assembly connected to the body, the assembly including:
a closure member, and
a magnetic catch disposed to hold the closure member in an open position, the magnetic catch being configured to release the closure member upon a selected hydrodynamic load upon the closure member;

exceeding a selected flow rate associated with release of the closure member to seat on the closure seat.

7. The method as claimed in claim 6 further comprising resetting the closure member by flowing fluid through the body in an opposite direction of flow during closure of the closure member.

8. The method as claimed in claim 7 wherein the resetting is resetting the magnetic catch with the closure member in the open position.

9. The method as claimed in claim 8 wherein the resetting the magnetic catch is automatic upon flowing the closure member into proximity with the frame.

10. A wellbore system comprising:
a borehole;
a plug as claimed in claim 1 disposed in the borehole.

Assignees

• Stolboushkin Eugene
• Flores Perez Juan Carlos
• Burke Seth
• Baker Hughes Oilfield Operations Llc

Inventors

• Stolboushkin Eugene
• Flores Perez Juan Carlos
• Burke Seth

Classifications

• E21B34/102 Primary

  with means for locking the closing element in open or closed position (E21B34/105 and E21B34/108 take precedence) · CPC title

• E21B34/10 Primary

  operated by control fluid supplied from outside the borehole · CPC title

• E21B33/1293

  with means for anchoring against downward and upward movement (E21B33/1291, E21B33/1295 take precedence) · CPC title

• E21B2200/05

  Flapper valves · CPC title

• E21B33/1208

  characterised by the construction of the sealing or packing means (E21B33/1277 takes precedence) · CPC title