Journal of Petroleum Technology article on Reelwell Drilling Method
1 December 2017
Reelwell Drilling Method is featured in the November issue of JPT magazine.
Introduction to article: “A new drilling method provides a solution for challenges encountered in drilling of long horizontal wells, incorporating a dual drillstring with a separate channel for the return fluid from the well.
This arrangement enables managed-gradient drilling (i.e., to drill with a constant downhole pressure gradient that can be controlled to be nearly independent of the flow rate).
The solution is similar to managed-pressure drilling (MPD) but differs in that the downhole pressure gradient is managed instead of the pressure at one depth in the well.”