Multi-stage object drop frac assembly with filtration media and method
AssigneeBaker Hughes Oilfield Operations LLC
InventorsEugene Stolboushkin, Todd Christopher Jackson, Matthew D. Solfronk, James Scott Sanchez, Ricardo Arturo Gomez Barker
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Abstract
A multi-stage object drop frac assembly that includes a fracture subassembly is configured for disposal in a well zone. The assembly includes a plurality of filtration media stages configured for disposal in the same well zone. A plurality of valves, one of the plurality of valves being associated with each of the plurality of filtration media stages is a part of the assembly and the plurality of valves are openable simultaneously in response to the same event.
Claims19
A filtration media stage for a fracturing assembly comprising:
- a filtration media sub having a port extending radially therethrough;
- a filtration media disposed to filter fluid passing through the port;
- a valve disposed to open or close the port, the valve when closed protecting the filtration media from pressure internal to the filtration media sub;
- an indexing mechanism configured and positioned to dictate valve movement in response to internal housing pressure;
- and
- further including a lock with a cage and a collapsible landing feature preventing movement of the valve.
A multi-stage object drop frac assembly comprising:
- a fracture subassembly configured for disposal in a well zone;
- a plurality of filtration media stages configured for disposal in the same well zone;
- a plurality of valves, one of the plurality of valves being associated with each of the plurality of filtration media stages, the plurality of valves openable simultaneously in response to a same event;
- and
- wherein each of the plurality of valves includes a cage and collapsible landing feature, each cage and collapsible landing feature being movable from a position that inhibits movement of each of the plurality of valves to a position allowing movement of each of the plurality of valves, by a same object landed on each landing feature.
A method for fracturing a zone in a wellbore comprising:
- dropping a first object on a fracture subassembly;
- dropping a second object on each landing feature of a plurality of valves having landing features, each landing feature comprising a cage and a collapsible seat;
- shifting each seat of the plurality of valves with the same second object;
- collapsing each of the collapsible seat of each landing feature;
- closing the fracture subassembly with the same second object;
- pressuring up against the second object to cycle individual indexing mechanisms in each of the plurality of valves;
- and
- opening the plurality of valves in response to the indexing mechanism reaching a preselected condition.
Dependencies are inferred from the claim text.