Close in Definition

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Close in:

1.

To shut in a well temporarily that is capable of producing oil or gas.

2.

To close the blowout preventers on a well to control a kick.

The blowout preventers close off the annulus so that pressure from below cannot flow to the surface.

3.

To close a valve to stop or isolate fluid flow.

The term is most commonly applied to “closing-in the well,” meaning isolation of the wellbore¬†by closing the master valve.