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[krishnamurthy]

what is shut in tubing head pressure and temerature? pls explain.

[paulhorth]

Krishnamurthy,

 

The shut-in tubing head pressure (also called the Wellhead Shut-in Pressure or WHSIP) is the pressure at the top of an oil or gas well when it is shut in (not flowing). The pressure is held against the upper master valve or the wing valve.

The flowing wellhead pressure is usually much lower, due to the friction loss of the well fluids coming up the tubing and also the gravity head of the well fluids. When the well is shut in, the liquid content of the tubing can drain back down, resulting in a lower static head above the reservoir and thus a higher pressure at the top.

The shut-in temperature is not really significant because the wellhead will cool down after shut-in.

 

Paul