Boundary formation pressure estimate @ model

Average pressure value along the boundary of drainage area $//<![CDATA[ \begin{array}{l}A_e\end{array} //]]>$

where $//<![CDATA[ \begin{array}{l}L_e\end{array} //]]>$ is the boundary of drainage area $//<![CDATA[ \begin{array}{l}A_e\end{array} //]]>$

This definition is based on the idea that there is a boundary line $//<![CDATA[ \begin{array}{l}L_e\end{array} //]]>$ which restricts radial flow around a well, which is a fair assumption in most practical cases.

The advantage of this method over (Shut-in formation pressure estimate:1) is that:

• it provides more accurate estimate of the pressure away from a given well
• is not dependent on $//<![CDATA[ \begin{array}{l}t_e\end{array} //]]>$ convention, which may be not valid for a given well