ABSTRACT
The major goal of this research is to analyse the effects of partial completion on the productivity index (PI) of vertical wells. Well performance is frequently assessed in terms of well productivity, which is influenced by a variety of attributes including reservoir configuration, completion type, petrophysical and fluid characteristics, formation damage, and so on. the effect of partial completion is the main focus of the productivity index analysis. The effect of partial completion is the main focus of the productivity index analysis, because practically all vertical wells are partially completed owing to water coning or gas cap problems, etc., it is also very expensive to fully complete a well especially when the formation thickness is so large.
Pressure behaviour solutions for both closed and constant pressure boundaries have been developed, taking partial completion into account. Because a well's productivity is frequently measured over a lengthy period of time, the productivity index was calculated using a pseudo-steady state (late time) procedure.
On the productivity index of a vertical well, several essential elements such as pseudo skin, form parameters, penetration ratio, reservoir drainage area, and so on have been investigated. The impacts of these variables on PI were investigated. The research was carried out using theoretical data, with the findings revealing that the productivity index improves with rising completion interval and vice versa, however the pressure drop owing to skin as a result of limited fluid flow rises dramatically with declining completion interval.
