Examining trajectory effects can improve horizontal well performance

A simple analytical model was used to design a horizontal oil well with undulations, to overcome problems of low vertical permeability. The wellbore trajectory, effects on productivity, and flow also need to be studied carefully, when designing an undulating well. An undulating well is defined as a horizontal well that consists of uphill and downhill sections along the wellbore. It was assumed that that each uphill and downhill section has a constant inclination angle and well height for every cycle is a constant, to obtain an analytical solution to the problem. It was also observed that the well is drilled in an anisotropic box-shaped reservoir, and it can be partially penetrated through the reservoir. A no-flow image boundary was also created between each uphill and downhill flow section, to model the problem.

Examining trajectory effects can improve horizontal well performance Academic Article