Abstract
Productivity of a tight gas formation is strongly tied to flow area. This fact dictates the creation of enhanced flow area through drilling of multi-lateral wells and/or fracturing.
In the case of fracturing, loss of fracture conductivity near the wellbore can have a drastic and negative effect on the productivity of a fractured well. This is especially true when creating a transverse fracture to intersect a horizontal well. In tight formations, loss of communication between the fracture and the formation could also have a devastating effect on productivity of the well, vertical or horizontal.
In this paper, the following will be discussed:
The effect of completion methodology on productivity of a tight gas formation
The effect of near-wellbore damage of fracture conductivity on productivity of a fractured well in a tight gas formation
The effect of creating multiple fractures on the productivity of wells
Testing a previously fractured well using an injection falloff test, or a pressure buildup test to determine the degree of damage (DED) and depth of damage (DOD) of the fracture conductivity