... which have been well documented in other papers. 1,2,3 Even where it is desirable to use a coiled tubing unit to drill the underbalanced section, however, it has been common practice to use a conventional rig to set a whipstock and mill a window in the well casing for the reentry. The potential to use...

... damage was used to drill in this mature field. Horizontal wells, reentries and new wells, drilled with the fluid chosen from the tests showed four fold increase of production. Introduction Horizontal drilling, specially reentry, has become in the last five years a useful way to increase production...

.... Another Important and topical question is, do horizontal wells actually increase the ultimate reserves? How are these concepts standing up to field application? We will discuss these concerns mainly from the Western Canadian Basin perspective. ultimate recovery reservoir reentry alberta annual...