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Suppose we are drilling into an up dip ( tilted ) gas formation at 4 , 0 0 0 f t . The WGC (
Suppose we are drilling into an up dip tilted gas formation at The WGC water gas contact is at and the pressure is "normal at and also normal outside the formation at The temperature is assumed constant at and the gas gravity is We are using the appropriate mud weight for balanced drilling at ft before we "hit" the gas formation.
a What is the appropriate mud weight at
b What is the gas pore pressure at inside the formation? You may assume although don't forget you are supposed to know how to calculate Z
c What mud weight do we need to be balanced when wedrill into the formation?
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